drivers/net/ethernet/intel/i40e/i40e_ethtool.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 /* ethtool support for i40e */
   5
   6 #include "i40e.h"
   7 #include "i40e_diag.h"
   8 #include "i40e_txrx_common.h"
   9
  10 /* ethtool statistics helpers */
  11
  12 /**
  13  * struct i40e_stats - definition for an ethtool statistic
  14  * @stat_string: statistic name to display in ethtool -S output
  15  * @sizeof_stat: the sizeof() the stat, must be no greater than sizeof(u64)
  16  * @stat_offset: offsetof() the stat from a base pointer
  17  *
  18  * This structure defines a statistic to be added to the ethtool stats buffer.
  19  * It defines a statistic as offset from a common base pointer. Stats should
  20  * be defined in constant arrays using the I40E_STAT macro, with every element
  21  * of the array using the same _type for calculating the sizeof_stat and
  22  * stat_offset.
  23  *
  24  * The @sizeof_stat is expected to be sizeof(u8), sizeof(u16), sizeof(u32) or
  25  * sizeof(u64). Other sizes are not expected and will produce a WARN_ONCE from
  26  * the i40e_add_ethtool_stat() helper function.
  27  *
  28  * The @stat_string is interpreted as a format string, allowing formatted
  29  * values to be inserted while looping over multiple structures for a given
  30  * statistics array. Thus, every statistic string in an array should have the
  31  * same type and number of format specifiers, to be formatted by variadic
  32  * arguments to the i40e_add_stat_string() helper function.
  33  **/
  34 struct i40e_stats {
  35         char stat_string[ETH_GSTRING_LEN];
  36         int sizeof_stat;
  37         int stat_offset;
  38 };
  39
  40 /* Helper macro to define an i40e_stat structure with proper size and type.
  41  * Use this when defining constant statistics arrays. Note that @_type expects
  42  * only a type name and is used multiple times.
  43  */
  44 #define I40E_STAT(_type, _name, _stat) { \
  45         .stat_string = _name, \
  46         .sizeof_stat = FIELD_SIZEOF(_type, _stat), \
  47         .stat_offset = offsetof(_type, _stat) \
  48 }
  49
  50 /* Helper macro for defining some statistics directly copied from the netdev
  51  * stats structure.
  52  */
  53 #define I40E_NETDEV_STAT(_net_stat) \
  54         I40E_STAT(struct rtnl_link_stats64, #_net_stat, _net_stat)
  55
  56 /* Helper macro for defining some statistics related to queues */
  57 #define I40E_QUEUE_STAT(_name, _stat) \
  58         I40E_STAT(struct i40e_ring, _name, _stat)
  59
  60 /* Stats associated with a Tx or Rx ring */
  61 static const struct i40e_stats i40e_gstrings_queue_stats[] = {
  62         I40E_QUEUE_STAT("%s-%u.packets", stats.packets),
  63         I40E_QUEUE_STAT("%s-%u.bytes", stats.bytes),
  64 };
  65
  66 /**
  67  * i40e_add_one_ethtool_stat - copy the stat into the supplied buffer
  68  * @data: location to store the stat value
  69  * @pointer: basis for where to copy from
  70  * @stat: the stat definition
  71  *
  72  * Copies the stat data defined by the pointer and stat structure pair into
  73  * the memory supplied as data. Used to implement i40e_add_ethtool_stats and
  74  * i40e_add_queue_stats. If the pointer is null, data will be zero'd.
  75  */
  76 static void
  77 i40e_add_one_ethtool_stat(u64 *data, void *pointer,
  78                           const struct i40e_stats *stat)
  79 {
  80         char *p;
  81
  82         if (!pointer) {
  83                 /* ensure that the ethtool data buffer is zero'd for any stats
  84                  * which don't have a valid pointer.
  85                  */
  86                 *data = 0;
  87                 return;
  88         }
  89
  90         p = (char *)pointer + stat->stat_offset;
  91         switch (stat->sizeof_stat) {
  92         case sizeof(u64):
  93                 *data = *((u64 *)p);
  94                 break;
  95         case sizeof(u32):
  96                 *data = *((u32 *)p);
  97                 break;
  98         case sizeof(u16):
  99                 *data = *((u16 *)p);
 100                 break;
 101         case sizeof(u8):
 102                 *data = *((u8 *)p);
 103                 break;
 104         default:
 105                 WARN_ONCE(1, "unexpected stat size for %s",
 106                           stat->stat_string);
 107                 *data = 0;
 108         }
 109 }
 110
 111 /**
 112  * __i40e_add_ethtool_stats - copy stats into the ethtool supplied buffer
 113  * @data: ethtool stats buffer
 114  * @pointer: location to copy stats from
 115  * @stats: array of stats to copy
 116  * @size: the size of the stats definition
 117  *
 118  * Copy the stats defined by the stats array using the pointer as a base into
 119  * the data buffer supplied by ethtool. Updates the data pointer to point to
 120  * the next empty location for successive calls to __i40e_add_ethtool_stats.
 121  * If pointer is null, set the data values to zero and update the pointer to
 122  * skip these stats.
 123  **/
 124 static void
 125 __i40e_add_ethtool_stats(u64 **data, void *pointer,
 126                          const struct i40e_stats stats[],
 127                          const unsigned int size)
 128 {
 129         unsigned int i;
 130
 131         for (i = 0; i < size; i++)
 132                 i40e_add_one_ethtool_stat((*data)++, pointer, &stats[i]);
 133 }
 134
 135 /**
 136  * i40e_add_ethtool_stats - copy stats into ethtool supplied buffer
 137  * @data: ethtool stats buffer
 138  * @pointer: location where stats are stored
 139  * @stats: static const array of stat definitions
 140  *
 141  * Macro to ease the use of __i40e_add_ethtool_stats by taking a static
 142  * constant stats array and passing the ARRAY_SIZE(). This avoids typos by
 143  * ensuring that we pass the size associated with the given stats array.
 144  *
 145  * The parameter @stats is evaluated twice, so parameters with side effects
 146  * should be avoided.
 147  **/
 148 #define i40e_add_ethtool_stats(data, pointer, stats) \
 149         __i40e_add_ethtool_stats(data, pointer, stats, ARRAY_SIZE(stats))
 150
 151 /**
 152  * i40e_add_queue_stats - copy queue statistics into supplied buffer
 153  * @data: ethtool stats buffer
 154  * @ring: the ring to copy
 155  *
 156  * Queue statistics must be copied while protected by
 157  * u64_stats_fetch_begin_irq, so we can't directly use i40e_add_ethtool_stats.
 158  * Assumes that queue stats are defined in i40e_gstrings_queue_stats. If the
 159  * ring pointer is null, zero out the queue stat values and update the data
 160  * pointer. Otherwise safely copy the stats from the ring into the supplied
 161  * buffer and update the data pointer when finished.
 162  *
 163  * This function expects to be called while under rcu_read_lock().
 164  **/
 165 static void
 166 i40e_add_queue_stats(u64 **data, struct i40e_ring *ring)
 167 {
 168         const unsigned int size = ARRAY_SIZE(i40e_gstrings_queue_stats);
 169         const struct i40e_stats *stats = i40e_gstrings_queue_stats;
 170         unsigned int start;
 171         unsigned int i;
 172
 173         /* To avoid invalid statistics values, ensure that we keep retrying
 174          * the copy until we get a consistent value according to
 175          * u64_stats_fetch_retry_irq. But first, make sure our ring is
 176          * non-null before attempting to access its syncp.
 177          */
 178         do {
 179                 start = !ring ? 0 : u64_stats_fetch_begin_irq(&ring->syncp);
 180                 for (i = 0; i < size; i++) {
 181                         i40e_add_one_ethtool_stat(&(*data)[i], ring,
 182                                                   &stats[i]);
 183                 }
 184         } while (ring && u64_stats_fetch_retry_irq(&ring->syncp, start));
 185
 186         /* Once we successfully copy the stats in, update the data pointer */
 187         *data += size;
 188 }
 189
 190 /**
 191  * __i40e_add_stat_strings - copy stat strings into ethtool buffer
 192  * @p: ethtool supplied buffer
 193  * @stats: stat definitions array
 194  * @size: size of the stats array
 195  *
 196  * Format and copy the strings described by stats into the buffer pointed at
 197  * by p.
 198  **/
 199 static void __i40e_add_stat_strings(u8 **p, const struct i40e_stats stats[],
 200                                     const unsigned int size, ...)
 201 {
 202         unsigned int i;
 203
 204         for (i = 0; i < size; i++) {
 205                 va_list args;
 206
 207                 va_start(args, size);
 208                 vsnprintf(*p, ETH_GSTRING_LEN, stats[i].stat_string, args);
 209                 *p += ETH_GSTRING_LEN;
 210                 va_end(args);
 211         }
 212 }
 213
 214 /**
 215  * 40e_add_stat_strings - copy stat strings into ethtool buffer
 216  * @p: ethtool supplied buffer
 217  * @stats: stat definitions array
 218  *
 219  * Format and copy the strings described by the const static stats value into
 220  * the buffer pointed at by p.
 221  *
 222  * The parameter @stats is evaluated twice, so parameters with side effects
 223  * should be avoided. Additionally, stats must be an array such that
 224  * ARRAY_SIZE can be called on it.
 225  **/
 226 #define i40e_add_stat_strings(p, stats, ...) \
 227         __i40e_add_stat_strings(p, stats, ARRAY_SIZE(stats), ## __VA_ARGS__)
 228
 229 #define I40E_PF_STAT(_name, _stat) \
 230         I40E_STAT(struct i40e_pf, _name, _stat)
 231 #define I40E_VSI_STAT(_name, _stat) \
 232         I40E_STAT(struct i40e_vsi, _name, _stat)
 233 #define I40E_VEB_STAT(_name, _stat) \
 234         I40E_STAT(struct i40e_veb, _name, _stat)
 235 #define I40E_PFC_STAT(_name, _stat) \
 236         I40E_STAT(struct i40e_pfc_stats, _name, _stat)
 237 #define I40E_QUEUE_STAT(_name, _stat) \
 238         I40E_STAT(struct i40e_ring, _name, _stat)
 239
 240 static const struct i40e_stats i40e_gstrings_net_stats[] = {
 241         I40E_NETDEV_STAT(rx_packets),
 242         I40E_NETDEV_STAT(tx_packets),
 243         I40E_NETDEV_STAT(rx_bytes),
 244         I40E_NETDEV_STAT(tx_bytes),
 245         I40E_NETDEV_STAT(rx_errors),
 246         I40E_NETDEV_STAT(tx_errors),
 247         I40E_NETDEV_STAT(rx_dropped),
 248         I40E_NETDEV_STAT(tx_dropped),
 249         I40E_NETDEV_STAT(collisions),
 250         I40E_NETDEV_STAT(rx_length_errors),
 251         I40E_NETDEV_STAT(rx_crc_errors),
 252 };
 253
 254 static const struct i40e_stats i40e_gstrings_veb_stats[] = {
 255         I40E_VEB_STAT("veb.rx_bytes", stats.rx_bytes),
 256         I40E_VEB_STAT("veb.tx_bytes", stats.tx_bytes),
 257         I40E_VEB_STAT("veb.rx_unicast", stats.rx_unicast),
 258         I40E_VEB_STAT("veb.tx_unicast", stats.tx_unicast),
 259         I40E_VEB_STAT("veb.rx_multicast", stats.rx_multicast),
 260         I40E_VEB_STAT("veb.tx_multicast", stats.tx_multicast),
 261         I40E_VEB_STAT("veb.rx_broadcast", stats.rx_broadcast),
 262         I40E_VEB_STAT("veb.tx_broadcast", stats.tx_broadcast),
 263         I40E_VEB_STAT("veb.rx_discards", stats.rx_discards),
 264         I40E_VEB_STAT("veb.tx_discards", stats.tx_discards),
 265         I40E_VEB_STAT("veb.tx_errors", stats.tx_errors),
 266         I40E_VEB_STAT("veb.rx_unknown_protocol", stats.rx_unknown_protocol),
 267 };
 268
 269 static const struct i40e_stats i40e_gstrings_veb_tc_stats[] = {
 270         I40E_VEB_STAT("veb.tc_%u_tx_packets", tc_stats.tc_tx_packets),
 271         I40E_VEB_STAT("veb.tc_%u_tx_bytes", tc_stats.tc_tx_bytes),
 272         I40E_VEB_STAT("veb.tc_%u_rx_packets", tc_stats.tc_rx_packets),
 273         I40E_VEB_STAT("veb.tc_%u_rx_bytes", tc_stats.tc_rx_bytes),
 274 };
 275
 276 static const struct i40e_stats i40e_gstrings_misc_stats[] = {
 277         I40E_VSI_STAT("rx_unicast", eth_stats.rx_unicast),
 278         I40E_VSI_STAT("tx_unicast", eth_stats.tx_unicast),
 279         I40E_VSI_STAT("rx_multicast", eth_stats.rx_multicast),
 280         I40E_VSI_STAT("tx_multicast", eth_stats.tx_multicast),
 281         I40E_VSI_STAT("rx_broadcast", eth_stats.rx_broadcast),
 282         I40E_VSI_STAT("tx_broadcast", eth_stats.tx_broadcast),
 283         I40E_VSI_STAT("rx_unknown_protocol", eth_stats.rx_unknown_protocol),
 284         I40E_VSI_STAT("tx_linearize", tx_linearize),
 285         I40E_VSI_STAT("tx_force_wb", tx_force_wb),
 286         I40E_VSI_STAT("tx_busy", tx_busy),
 287         I40E_VSI_STAT("rx_alloc_fail", rx_buf_failed),
 288         I40E_VSI_STAT("rx_pg_alloc_fail", rx_page_failed),
 289 };
 290
 291 /* These PF_STATs might look like duplicates of some NETDEV_STATs,
 292  * but they are separate.  This device supports Virtualization, and
 293  * as such might have several netdevs supporting VMDq and FCoE going
 294  * through a single port.  The NETDEV_STATs are for individual netdevs
 295  * seen at the top of the stack, and the PF_STATs are for the physical
 296  * function at the bottom of the stack hosting those netdevs.
 297  *
 298  * The PF_STATs are appended to the netdev stats only when ethtool -S
 299  * is queried on the base PF netdev, not on the VMDq or FCoE netdev.
 300  */
 301 static const struct i40e_stats i40e_gstrings_stats[] = {
 302         I40E_PF_STAT("port.rx_bytes", stats.eth.rx_bytes),
 303         I40E_PF_STAT("port.tx_bytes", stats.eth.tx_bytes),
 304         I40E_PF_STAT("port.rx_unicast", stats.eth.rx_unicast),
 305         I40E_PF_STAT("port.tx_unicast", stats.eth.tx_unicast),
 306         I40E_PF_STAT("port.rx_multicast", stats.eth.rx_multicast),
 307         I40E_PF_STAT("port.tx_multicast", stats.eth.tx_multicast),
 308         I40E_PF_STAT("port.rx_broadcast", stats.eth.rx_broadcast),
 309         I40E_PF_STAT("port.tx_broadcast", stats.eth.tx_broadcast),
 310         I40E_PF_STAT("port.tx_errors", stats.eth.tx_errors),
 311         I40E_PF_STAT("port.rx_dropped", stats.eth.rx_discards),
 312         I40E_PF_STAT("port.tx_dropped_link_down", stats.tx_dropped_link_down),
 313         I40E_PF_STAT("port.rx_crc_errors", stats.crc_errors),
 314         I40E_PF_STAT("port.illegal_bytes", stats.illegal_bytes),
 315         I40E_PF_STAT("port.mac_local_faults", stats.mac_local_faults),
 316         I40E_PF_STAT("port.mac_remote_faults", stats.mac_remote_faults),
 317         I40E_PF_STAT("port.tx_timeout", tx_timeout_count),
 318         I40E_PF_STAT("port.rx_csum_bad", hw_csum_rx_error),
 319         I40E_PF_STAT("port.rx_length_errors", stats.rx_length_errors),
 320         I40E_PF_STAT("port.link_xon_rx", stats.link_xon_rx),
 321         I40E_PF_STAT("port.link_xoff_rx", stats.link_xoff_rx),
 322         I40E_PF_STAT("port.link_xon_tx", stats.link_xon_tx),
 323         I40E_PF_STAT("port.link_xoff_tx", stats.link_xoff_tx),
 324         I40E_PF_STAT("port.rx_size_64", stats.rx_size_64),
 325         I40E_PF_STAT("port.rx_size_127", stats.rx_size_127),
 326         I40E_PF_STAT("port.rx_size_255", stats.rx_size_255),
 327         I40E_PF_STAT("port.rx_size_511", stats.rx_size_511),
 328         I40E_PF_STAT("port.rx_size_1023", stats.rx_size_1023),
 329         I40E_PF_STAT("port.rx_size_1522", stats.rx_size_1522),
 330         I40E_PF_STAT("port.rx_size_big", stats.rx_size_big),
 331         I40E_PF_STAT("port.tx_size_64", stats.tx_size_64),
 332         I40E_PF_STAT("port.tx_size_127", stats.tx_size_127),
 333         I40E_PF_STAT("port.tx_size_255", stats.tx_size_255),
 334         I40E_PF_STAT("port.tx_size_511", stats.tx_size_511),
 335         I40E_PF_STAT("port.tx_size_1023", stats.tx_size_1023),
 336         I40E_PF_STAT("port.tx_size_1522", stats.tx_size_1522),
 337         I40E_PF_STAT("port.tx_size_big", stats.tx_size_big),
 338         I40E_PF_STAT("port.rx_undersize", stats.rx_undersize),
 339         I40E_PF_STAT("port.rx_fragments", stats.rx_fragments),
 340         I40E_PF_STAT("port.rx_oversize", stats.rx_oversize),
 341         I40E_PF_STAT("port.rx_jabber", stats.rx_jabber),
 342         I40E_PF_STAT("port.VF_admin_queue_requests", vf_aq_requests),
 343         I40E_PF_STAT("port.arq_overflows", arq_overflows),
 344         I40E_PF_STAT("port.tx_hwtstamp_timeouts", tx_hwtstamp_timeouts),
 345         I40E_PF_STAT("port.rx_hwtstamp_cleared", rx_hwtstamp_cleared),
 346         I40E_PF_STAT("port.tx_hwtstamp_skipped", tx_hwtstamp_skipped),
 347         I40E_PF_STAT("port.fdir_flush_cnt", fd_flush_cnt),
 348         I40E_PF_STAT("port.fdir_atr_match", stats.fd_atr_match),
 349         I40E_PF_STAT("port.fdir_atr_tunnel_match", stats.fd_atr_tunnel_match),
 350         I40E_PF_STAT("port.fdir_atr_status", stats.fd_atr_status),
 351         I40E_PF_STAT("port.fdir_sb_match", stats.fd_sb_match),
 352         I40E_PF_STAT("port.fdir_sb_status", stats.fd_sb_status),
 353
 354         /* LPI stats */
 355         I40E_PF_STAT("port.tx_lpi_status", stats.tx_lpi_status),
 356         I40E_PF_STAT("port.rx_lpi_status", stats.rx_lpi_status),
 357         I40E_PF_STAT("port.tx_lpi_count", stats.tx_lpi_count),
 358         I40E_PF_STAT("port.rx_lpi_count", stats.rx_lpi_count),
 359 };
 360
 361 struct i40e_pfc_stats {
 362         u64 priority_xon_rx;
 363         u64 priority_xoff_rx;
 364         u64 priority_xon_tx;
 365         u64 priority_xoff_tx;
 366         u64 priority_xon_2_xoff;
 367 };
 368
 369 static const struct i40e_stats i40e_gstrings_pfc_stats[] = {
 370         I40E_PFC_STAT("port.tx_priority_%u_xon_tx", priority_xon_tx),
 371         I40E_PFC_STAT("port.tx_priority_%u_xoff_tx", priority_xoff_tx),
 372         I40E_PFC_STAT("port.rx_priority_%u_xon_rx", priority_xon_rx),
 373         I40E_PFC_STAT("port.rx_priority_%u_xoff_rx", priority_xoff_rx),
 374         I40E_PFC_STAT("port.rx_priority_%u_xon_2_xoff", priority_xon_2_xoff),
 375 };
 376
 377 #define I40E_NETDEV_STATS_LEN   ARRAY_SIZE(i40e_gstrings_net_stats)
 378
 379 #define I40E_MISC_STATS_LEN     ARRAY_SIZE(i40e_gstrings_misc_stats)
 380
 381 #define I40E_VSI_STATS_LEN      (I40E_NETDEV_STATS_LEN + I40E_MISC_STATS_LEN)
 382
 383 #define I40E_PFC_STATS_LEN      (ARRAY_SIZE(i40e_gstrings_pfc_stats) * \
 384                                  I40E_MAX_USER_PRIORITY)
 385
 386 #define I40E_VEB_STATS_LEN      (ARRAY_SIZE(i40e_gstrings_veb_stats) + \
 387                                  (ARRAY_SIZE(i40e_gstrings_veb_tc_stats) * \
 388                                   I40E_MAX_TRAFFIC_CLASS))
 389
 390 #define I40E_GLOBAL_STATS_LEN   ARRAY_SIZE(i40e_gstrings_stats)
 391
 392 #define I40E_PF_STATS_LEN       (I40E_GLOBAL_STATS_LEN + \
 393                                  I40E_PFC_STATS_LEN + \
 394                                  I40E_VEB_STATS_LEN + \
 395                                  I40E_VSI_STATS_LEN)
 396
 397 /* Length of stats for a single queue */
 398 #define I40E_QUEUE_STATS_LEN    ARRAY_SIZE(i40e_gstrings_queue_stats)
 399
 400 enum i40e_ethtool_test_id {
 401         I40E_ETH_TEST_REG = 0,
 402         I40E_ETH_TEST_EEPROM,
 403         I40E_ETH_TEST_INTR,
 404         I40E_ETH_TEST_LINK,
 405 };
 406
 407 static const char i40e_gstrings_test[][ETH_GSTRING_LEN] = {
 408         "Register test  (offline)",
 409         "Eeprom test    (offline)",
 410         "Interrupt test (offline)",
 411         "Link test   (on/offline)"
 412 };
 413
 414 #define I40E_TEST_LEN (sizeof(i40e_gstrings_test) / ETH_GSTRING_LEN)
 415
 416 struct i40e_priv_flags {
 417         char flag_string[ETH_GSTRING_LEN];
 418         u64 flag;
 419         bool read_only;
 420 };
 421
 422 #define I40E_PRIV_FLAG(_name, _flag, _read_only) { \
 423         .flag_string = _name, \
 424         .flag = _flag, \
 425         .read_only = _read_only, \
 426 }
 427
 428 static const struct i40e_priv_flags i40e_gstrings_priv_flags[] = {
 429         /* NOTE: MFP setting cannot be changed */
 430         I40E_PRIV_FLAG("MFP", I40E_FLAG_MFP_ENABLED, 1),
 431         I40E_PRIV_FLAG("LinkPolling", I40E_FLAG_LINK_POLLING_ENABLED, 0),
 432         I40E_PRIV_FLAG("flow-director-atr", I40E_FLAG_FD_ATR_ENABLED, 0),
 433         I40E_PRIV_FLAG("veb-stats", I40E_FLAG_VEB_STATS_ENABLED, 0),
 434         I40E_PRIV_FLAG("hw-atr-eviction", I40E_FLAG_HW_ATR_EVICT_ENABLED, 0),
 435         I40E_PRIV_FLAG("link-down-on-close",
 436                        I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED, 0),
 437         I40E_PRIV_FLAG("legacy-rx", I40E_FLAG_LEGACY_RX, 0),
 438         I40E_PRIV_FLAG("disable-source-pruning",
 439                        I40E_FLAG_SOURCE_PRUNING_DISABLED, 0),
 440         I40E_PRIV_FLAG("disable-fw-lldp", I40E_FLAG_DISABLE_FW_LLDP, 0),
 441         I40E_PRIV_FLAG("rs-fec", I40E_FLAG_RS_FEC, 0),
 442         I40E_PRIV_FLAG("base-r-fec", I40E_FLAG_BASE_R_FEC, 0),
 443 };
 444
 445 #define I40E_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gstrings_priv_flags)
 446
 447 /* Private flags with a global effect, restricted to PF 0 */
 448 static const struct i40e_priv_flags i40e_gl_gstrings_priv_flags[] = {
 449         I40E_PRIV_FLAG("vf-true-promisc-support",
 450                        I40E_FLAG_TRUE_PROMISC_SUPPORT, 0),
 451 };
 452
 453 #define I40E_GL_PRIV_FLAGS_STR_LEN ARRAY_SIZE(i40e_gl_gstrings_priv_flags)
 454
 455 /**
 456  * i40e_partition_setting_complaint - generic complaint for MFP restriction
 457  * @pf: the PF struct
 458  **/
 459 static void i40e_partition_setting_complaint(struct i40e_pf *pf)
 460 {
 461         dev_info(&pf->pdev->dev,
 462                  "The link settings are allowed to be changed only from the first partition of a given port. Please switch to the first partition in order to change the setting.\n");
 463 }
 464
 465 /**
 466  * i40e_phy_type_to_ethtool - convert the phy_types to ethtool link modes
 467  * @pf: PF struct with phy_types
 468  * @ks: ethtool link ksettings struct to fill out
 469  *
 470  **/
 471 static void i40e_phy_type_to_ethtool(struct i40e_pf *pf,
 472                                      struct ethtool_link_ksettings *ks)
 473 {
 474         struct i40e_link_status *hw_link_info = &pf->hw.phy.link_info;
 475         u64 phy_types = pf->hw.phy.phy_types;
 476
 477         ethtool_link_ksettings_zero_link_mode(ks, supported);
 478         ethtool_link_ksettings_zero_link_mode(ks, advertising);
 479
 480         if (phy_types & I40E_CAP_PHY_TYPE_SGMII) {
 481                 ethtool_link_ksettings_add_link_mode(ks, supported,
 482                                                      1000baseT_Full);
 483                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 484                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 485                                                              1000baseT_Full);
 486                 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
 487                         ethtool_link_ksettings_add_link_mode(ks, supported,
 488                                                              100baseT_Full);
 489                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 490                                                              100baseT_Full);
 491                 }
 492         }
 493         if (phy_types & I40E_CAP_PHY_TYPE_XAUI ||
 494             phy_types & I40E_CAP_PHY_TYPE_XFI ||
 495             phy_types & I40E_CAP_PHY_TYPE_SFI ||
 496             phy_types & I40E_CAP_PHY_TYPE_10GBASE_SFPP_CU ||
 497             phy_types & I40E_CAP_PHY_TYPE_10GBASE_AOC) {
 498                 ethtool_link_ksettings_add_link_mode(ks, supported,
 499                                                      10000baseT_Full);
 500                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 501                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 502                                                              10000baseT_Full);
 503         }
 504         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_T) {
 505                 ethtool_link_ksettings_add_link_mode(ks, supported,
 506                                                      10000baseT_Full);
 507                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 508                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 509                                                              10000baseT_Full);
 510         }
 511         if (phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T) {
 512                 ethtool_link_ksettings_add_link_mode(ks, supported,
 513                                                      2500baseT_Full);
 514                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
 515                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 516                                                              2500baseT_Full);
 517         }
 518         if (phy_types & I40E_CAP_PHY_TYPE_5GBASE_T) {
 519                 ethtool_link_ksettings_add_link_mode(ks, supported,
 520                                                      5000baseT_Full);
 521                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
 522                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 523                                                              5000baseT_Full);
 524         }
 525         if (phy_types & I40E_CAP_PHY_TYPE_XLAUI ||
 526             phy_types & I40E_CAP_PHY_TYPE_XLPPI ||
 527             phy_types & I40E_CAP_PHY_TYPE_40GBASE_AOC)
 528                 ethtool_link_ksettings_add_link_mode(ks, supported,
 529                                                      40000baseCR4_Full);
 530         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
 531             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4) {
 532                 ethtool_link_ksettings_add_link_mode(ks, supported,
 533                                                      40000baseCR4_Full);
 534                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_40GB)
 535                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 536                                                              40000baseCR4_Full);
 537         }
 538         if (phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
 539                 ethtool_link_ksettings_add_link_mode(ks, supported,
 540                                                      100baseT_Full);
 541                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
 542                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 543                                                              100baseT_Full);
 544         }
 545         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_T) {
 546                 ethtool_link_ksettings_add_link_mode(ks, supported,
 547                                                      1000baseT_Full);
 548                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 549                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 550                                                              1000baseT_Full);
 551         }
 552         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_SR4) {
 553                 ethtool_link_ksettings_add_link_mode(ks, supported,
 554                                                      40000baseSR4_Full);
 555                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 556                                                      40000baseSR4_Full);
 557         }
 558         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_LR4) {
 559                 ethtool_link_ksettings_add_link_mode(ks, supported,
 560                                                      40000baseLR4_Full);
 561                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 562                                                      40000baseLR4_Full);
 563         }
 564         if (phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4) {
 565                 ethtool_link_ksettings_add_link_mode(ks, supported,
 566                                                      40000baseKR4_Full);
 567                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 568                                                      40000baseKR4_Full);
 569         }
 570         if (phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2) {
 571                 ethtool_link_ksettings_add_link_mode(ks, supported,
 572                                                      20000baseKR2_Full);
 573                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_20GB)
 574                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 575                                                              20000baseKR2_Full);
 576         }
 577         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4) {
 578                 ethtool_link_ksettings_add_link_mode(ks, supported,
 579                                                      10000baseKX4_Full);
 580                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 581                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 582                                                              10000baseKX4_Full);
 583         }
 584         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR &&
 585             !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
 586                 ethtool_link_ksettings_add_link_mode(ks, supported,
 587                                                      10000baseKR_Full);
 588                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 589                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 590                                                              10000baseKR_Full);
 591         }
 592         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX &&
 593             !(pf->hw_features & I40E_HW_HAVE_CRT_RETIMER)) {
 594                 ethtool_link_ksettings_add_link_mode(ks, supported,
 595                                                      1000baseKX_Full);
 596                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 597                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 598                                                              1000baseKX_Full);
 599         }
 600         /* need to add 25G PHY types */
 601         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR) {
 602                 ethtool_link_ksettings_add_link_mode(ks, supported,
 603                                                      25000baseKR_Full);
 604                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 605                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 606                                                              25000baseKR_Full);
 607         }
 608         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR) {
 609                 ethtool_link_ksettings_add_link_mode(ks, supported,
 610                                                      25000baseCR_Full);
 611                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 612                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 613                                                              25000baseCR_Full);
 614         }
 615         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 616             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR) {
 617                 ethtool_link_ksettings_add_link_mode(ks, supported,
 618                                                      25000baseSR_Full);
 619                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 620                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 621                                                              25000baseSR_Full);
 622         }
 623         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
 624             phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
 625                 ethtool_link_ksettings_add_link_mode(ks, supported,
 626                                                      25000baseCR_Full);
 627                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB)
 628                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 629                                                              25000baseCR_Full);
 630         }
 631         if (phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
 632             phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
 633             phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 634             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
 635             phy_types & I40E_CAP_PHY_TYPE_25GBASE_AOC ||
 636             phy_types & I40E_CAP_PHY_TYPE_25GBASE_ACC) {
 637                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
 638                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
 639                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
 640                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_25GB) {
 641                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 642                                                              FEC_NONE);
 643                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 644                                                              FEC_RS);
 645                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 646                                                              FEC_BASER);
 647                 }
 648         }
 649         /* need to add new 10G PHY types */
 650         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
 651             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU) {
 652                 ethtool_link_ksettings_add_link_mode(ks, supported,
 653                                                      10000baseCR_Full);
 654                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 655                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 656                                                              10000baseCR_Full);
 657         }
 658         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR) {
 659                 ethtool_link_ksettings_add_link_mode(ks, supported,
 660                                                      10000baseSR_Full);
 661                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 662                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 663                                                              10000baseSR_Full);
 664         }
 665         if (phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR) {
 666                 ethtool_link_ksettings_add_link_mode(ks, supported,
 667                                                      10000baseLR_Full);
 668                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 669                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 670                                                              10000baseLR_Full);
 671         }
 672         if (phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
 673             phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
 674             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL) {
 675                 ethtool_link_ksettings_add_link_mode(ks, supported,
 676                                                      1000baseX_Full);
 677                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 678                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 679                                                              1000baseX_Full);
 680         }
 681         /* Autoneg PHY types */
 682         if (phy_types & I40E_CAP_PHY_TYPE_SGMII ||
 683             phy_types & I40E_CAP_PHY_TYPE_40GBASE_KR4 ||
 684             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4_CU ||
 685             phy_types & I40E_CAP_PHY_TYPE_40GBASE_CR4 ||
 686             phy_types & I40E_CAP_PHY_TYPE_25GBASE_SR ||
 687             phy_types & I40E_CAP_PHY_TYPE_25GBASE_LR ||
 688             phy_types & I40E_CAP_PHY_TYPE_25GBASE_KR ||
 689             phy_types & I40E_CAP_PHY_TYPE_25GBASE_CR ||
 690             phy_types & I40E_CAP_PHY_TYPE_20GBASE_KR2 ||
 691             phy_types & I40E_CAP_PHY_TYPE_10GBASE_SR ||
 692             phy_types & I40E_CAP_PHY_TYPE_10GBASE_LR ||
 693             phy_types & I40E_CAP_PHY_TYPE_10GBASE_KX4 ||
 694             phy_types & I40E_CAP_PHY_TYPE_10GBASE_KR ||
 695             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1_CU ||
 696             phy_types & I40E_CAP_PHY_TYPE_10GBASE_CR1 ||
 697             phy_types & I40E_CAP_PHY_TYPE_10GBASE_T ||
 698             phy_types & I40E_CAP_PHY_TYPE_5GBASE_T ||
 699             phy_types & I40E_CAP_PHY_TYPE_2_5GBASE_T ||
 700             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T_OPTICAL ||
 701             phy_types & I40E_CAP_PHY_TYPE_1000BASE_T ||
 702             phy_types & I40E_CAP_PHY_TYPE_1000BASE_SX ||
 703             phy_types & I40E_CAP_PHY_TYPE_1000BASE_LX ||
 704             phy_types & I40E_CAP_PHY_TYPE_1000BASE_KX ||
 705             phy_types & I40E_CAP_PHY_TYPE_100BASE_TX) {
 706                 ethtool_link_ksettings_add_link_mode(ks, supported,
 707                                                      Autoneg);
 708                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 709                                                      Autoneg);
 710         }
 711 }
 712
 713 /**
 714  * i40e_get_settings_link_up - Get the Link settings for when link is up
 715  * @hw: hw structure
 716  * @ks: ethtool ksettings to fill in
 717  * @netdev: network interface device structure
 718  * @pf: pointer to physical function struct
 719  **/
 720 static void i40e_get_settings_link_up(struct i40e_hw *hw,
 721                                       struct ethtool_link_ksettings *ks,
 722                                       struct net_device *netdev,
 723                                       struct i40e_pf *pf)
 724 {
 725         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
 726         struct ethtool_link_ksettings cap_ksettings;
 727         u32 link_speed = hw_link_info->link_speed;
 728
 729         /* Initialize supported and advertised settings based on phy settings */
 730         switch (hw_link_info->phy_type) {
 731         case I40E_PHY_TYPE_40GBASE_CR4:
 732         case I40E_PHY_TYPE_40GBASE_CR4_CU:
 733                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 734                 ethtool_link_ksettings_add_link_mode(ks, supported,
 735                                                      40000baseCR4_Full);
 736                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 737                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 738                                                      40000baseCR4_Full);
 739                 break;
 740         case I40E_PHY_TYPE_XLAUI:
 741         case I40E_PHY_TYPE_XLPPI:
 742         case I40E_PHY_TYPE_40GBASE_AOC:
 743                 ethtool_link_ksettings_add_link_mode(ks, supported,
 744                                                      40000baseCR4_Full);
 745                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 746                                                      40000baseCR4_Full);
 747                 break;
 748         case I40E_PHY_TYPE_40GBASE_SR4:
 749                 ethtool_link_ksettings_add_link_mode(ks, supported,
 750                                                      40000baseSR4_Full);
 751                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 752                                                      40000baseSR4_Full);
 753                 break;
 754         case I40E_PHY_TYPE_40GBASE_LR4:
 755                 ethtool_link_ksettings_add_link_mode(ks, supported,
 756                                                      40000baseLR4_Full);
 757                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 758                                                      40000baseLR4_Full);
 759                 break;
 760         case I40E_PHY_TYPE_25GBASE_SR:
 761         case I40E_PHY_TYPE_25GBASE_LR:
 762         case I40E_PHY_TYPE_10GBASE_SR:
 763         case I40E_PHY_TYPE_10GBASE_LR:
 764         case I40E_PHY_TYPE_1000BASE_SX:
 765         case I40E_PHY_TYPE_1000BASE_LX:
 766                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 767                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 768                 ethtool_link_ksettings_add_link_mode(ks, supported,
 769                                                      25000baseSR_Full);
 770                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 771                                                      25000baseSR_Full);
 772                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
 773                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
 774                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
 775                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_NONE);
 776                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
 777                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 778                                                      FEC_BASER);
 779                 ethtool_link_ksettings_add_link_mode(ks, supported,
 780                                                      10000baseSR_Full);
 781                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 782                                                      10000baseSR_Full);
 783                 ethtool_link_ksettings_add_link_mode(ks, supported,
 784                                                      10000baseLR_Full);
 785                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 786                                                      10000baseLR_Full);
 787                 ethtool_link_ksettings_add_link_mode(ks, supported,
 788                                                      1000baseX_Full);
 789                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 790                                                      1000baseX_Full);
 791                 ethtool_link_ksettings_add_link_mode(ks, supported,
 792                                                      10000baseT_Full);
 793                 if (hw_link_info->module_type[2] &
 794                     I40E_MODULE_TYPE_1000BASE_SX ||
 795                     hw_link_info->module_type[2] &
 796                     I40E_MODULE_TYPE_1000BASE_LX) {
 797                         ethtool_link_ksettings_add_link_mode(ks, supported,
 798                                                              1000baseT_Full);
 799                         if (hw_link_info->requested_speeds &
 800                             I40E_LINK_SPEED_1GB)
 801                                 ethtool_link_ksettings_add_link_mode(
 802                                      ks, advertising, 1000baseT_Full);
 803                 }
 804                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 805                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 806                                                              10000baseT_Full);
 807                 break;
 808         case I40E_PHY_TYPE_10GBASE_T:
 809         case I40E_PHY_TYPE_5GBASE_T:
 810         case I40E_PHY_TYPE_2_5GBASE_T:
 811         case I40E_PHY_TYPE_1000BASE_T:
 812         case I40E_PHY_TYPE_100BASE_TX:
 813                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 814                 ethtool_link_ksettings_add_link_mode(ks, supported,
 815                                                      10000baseT_Full);
 816                 ethtool_link_ksettings_add_link_mode(ks, supported,
 817                                                      5000baseT_Full);
 818                 ethtool_link_ksettings_add_link_mode(ks, supported,
 819                                                      2500baseT_Full);
 820                 ethtool_link_ksettings_add_link_mode(ks, supported,
 821                                                      1000baseT_Full);
 822                 ethtool_link_ksettings_add_link_mode(ks, supported,
 823                                                      100baseT_Full);
 824                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 825                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 826                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 827                                                              10000baseT_Full);
 828                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_5GB)
 829                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 830                                                              5000baseT_Full);
 831                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_2_5GB)
 832                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 833                                                              2500baseT_Full);
 834                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 835                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 836                                                              1000baseT_Full);
 837                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_100MB)
 838                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 839                                                              100baseT_Full);
 840                 break;
 841         case I40E_PHY_TYPE_1000BASE_T_OPTICAL:
 842                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 843                 ethtool_link_ksettings_add_link_mode(ks, supported,
 844                                                      1000baseT_Full);
 845                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 846                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 847                                                      1000baseT_Full);
 848                 break;
 849         case I40E_PHY_TYPE_10GBASE_CR1_CU:
 850         case I40E_PHY_TYPE_10GBASE_CR1:
 851                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 852                 ethtool_link_ksettings_add_link_mode(ks, supported,
 853                                                      10000baseT_Full);
 854                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 855                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 856                                                      10000baseT_Full);
 857                 break;
 858         case I40E_PHY_TYPE_XAUI:
 859         case I40E_PHY_TYPE_XFI:
 860         case I40E_PHY_TYPE_SFI:
 861         case I40E_PHY_TYPE_10GBASE_SFPP_CU:
 862         case I40E_PHY_TYPE_10GBASE_AOC:
 863                 ethtool_link_ksettings_add_link_mode(ks, supported,
 864                                                      10000baseT_Full);
 865                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_10GB)
 866                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 867                                                              10000baseT_Full);
 868                 break;
 869         case I40E_PHY_TYPE_SGMII:
 870                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 871                 ethtool_link_ksettings_add_link_mode(ks, supported,
 872                                                      1000baseT_Full);
 873                 if (hw_link_info->requested_speeds & I40E_LINK_SPEED_1GB)
 874                         ethtool_link_ksettings_add_link_mode(ks, advertising,
 875                                                              1000baseT_Full);
 876                 if (pf->hw_features & I40E_HW_100M_SGMII_CAPABLE) {
 877                         ethtool_link_ksettings_add_link_mode(ks, supported,
 878                                                              100baseT_Full);
 879                         if (hw_link_info->requested_speeds &
 880                             I40E_LINK_SPEED_100MB)
 881                                 ethtool_link_ksettings_add_link_mode(
 882                                       ks, advertising, 100baseT_Full);
 883                 }
 884                 break;
 885         case I40E_PHY_TYPE_40GBASE_KR4:
 886         case I40E_PHY_TYPE_25GBASE_KR:
 887         case I40E_PHY_TYPE_20GBASE_KR2:
 888         case I40E_PHY_TYPE_10GBASE_KR:
 889         case I40E_PHY_TYPE_10GBASE_KX4:
 890         case I40E_PHY_TYPE_1000BASE_KX:
 891                 ethtool_link_ksettings_add_link_mode(ks, supported,
 892                                                      40000baseKR4_Full);
 893                 ethtool_link_ksettings_add_link_mode(ks, supported,
 894                                                      25000baseKR_Full);
 895                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
 896                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
 897                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
 898                 ethtool_link_ksettings_add_link_mode(ks, supported,
 899                                                      20000baseKR2_Full);
 900                 ethtool_link_ksettings_add_link_mode(ks, supported,
 901                                                      10000baseKR_Full);
 902                 ethtool_link_ksettings_add_link_mode(ks, supported,
 903                                                      10000baseKX4_Full);
 904                 ethtool_link_ksettings_add_link_mode(ks, supported,
 905                                                      1000baseKX_Full);
 906                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 907                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 908                                                      40000baseKR4_Full);
 909                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 910                                                      25000baseKR_Full);
 911                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_NONE);
 912                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
 913                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 914                                                      FEC_BASER);
 915                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 916                                                      20000baseKR2_Full);
 917                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 918                                                      10000baseKR_Full);
 919                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 920                                                      10000baseKX4_Full);
 921                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 922                                                      1000baseKX_Full);
 923                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 924                 break;
 925         case I40E_PHY_TYPE_25GBASE_CR:
 926                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 927                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 928                 ethtool_link_ksettings_add_link_mode(ks, supported,
 929                                                      25000baseCR_Full);
 930                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 931                                                      25000baseCR_Full);
 932                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
 933                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
 934                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
 935                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_NONE);
 936                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
 937                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 938                                                      FEC_BASER);
 939                 break;
 940         case I40E_PHY_TYPE_25GBASE_AOC:
 941         case I40E_PHY_TYPE_25GBASE_ACC:
 942                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
 943                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
 944                 ethtool_link_ksettings_add_link_mode(ks, supported,
 945                                                      25000baseCR_Full);
 946                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 947                                                      25000baseCR_Full);
 948                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_NONE);
 949                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_RS);
 950                 ethtool_link_ksettings_add_link_mode(ks, supported, FEC_BASER);
 951                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_NONE);
 952                 ethtool_link_ksettings_add_link_mode(ks, advertising, FEC_RS);
 953                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 954                                                      FEC_BASER);
 955                 ethtool_link_ksettings_add_link_mode(ks, supported,
 956                                                      10000baseCR_Full);
 957                 ethtool_link_ksettings_add_link_mode(ks, advertising,
 958                                                      10000baseCR_Full);
 959                 break;
 960         default:
 961                 /* if we got here and link is up something bad is afoot */
 962                 netdev_info(netdev,
 963                             "WARNING: Link is up but PHY type 0x%x is not recognized.\n",
 964                             hw_link_info->phy_type);
 965         }
 966
 967         /* Now that we've worked out everything that could be supported by the
 968          * current PHY type, get what is supported by the NVM and intersect
 969          * them to get what is truly supported
 970          */
 971         memset(&cap_ksettings, 0, sizeof(struct ethtool_link_ksettings));
 972         i40e_phy_type_to_ethtool(pf, &cap_ksettings);
 973         ethtool_intersect_link_masks(ks, &cap_ksettings);
 974
 975         /* Set speed and duplex */
 976         switch (link_speed) {
 977         case I40E_LINK_SPEED_40GB:
 978                 ks->base.speed = SPEED_40000;
 979                 break;
 980         case I40E_LINK_SPEED_25GB:
 981                 ks->base.speed = SPEED_25000;
 982                 break;
 983         case I40E_LINK_SPEED_20GB:
 984                 ks->base.speed = SPEED_20000;
 985                 break;
 986         case I40E_LINK_SPEED_10GB:
 987                 ks->base.speed = SPEED_10000;
 988                 break;
 989         case I40E_LINK_SPEED_5GB:
 990                 ks->base.speed = SPEED_5000;
 991                 break;
 992         case I40E_LINK_SPEED_2_5GB:
 993                 ks->base.speed = SPEED_2500;
 994                 break;
 995         case I40E_LINK_SPEED_1GB:
 996                 ks->base.speed = SPEED_1000;
 997                 break;
 998         case I40E_LINK_SPEED_100MB:
 999                 ks->base.speed = SPEED_100;
1000                 break;
1001         default:
1002                 ks->base.speed = SPEED_UNKNOWN;
1003                 break;
1004         }
1005         ks->base.duplex = DUPLEX_FULL;
1006 }
1007
1008 /**
1009  * i40e_get_settings_link_down - Get the Link settings for when link is down
1010  * @hw: hw structure
1011  * @ks: ethtool ksettings to fill in
1012  * @pf: pointer to physical function struct
1013  *
1014  * Reports link settings that can be determined when link is down
1015  **/
1016 static void i40e_get_settings_link_down(struct i40e_hw *hw,
1017                                         struct ethtool_link_ksettings *ks,
1018                                         struct i40e_pf *pf)
1019 {
1020         /* link is down and the driver needs to fall back on
1021          * supported phy types to figure out what info to display
1022          */
1023         i40e_phy_type_to_ethtool(pf, ks);
1024
1025         /* With no link speed and duplex are unknown */
1026         ks->base.speed = SPEED_UNKNOWN;
1027         ks->base.duplex = DUPLEX_UNKNOWN;
1028 }
1029
1030 /**
1031  * i40e_get_link_ksettings - Get Link Speed and Duplex settings
1032  * @netdev: network interface device structure
1033  * @ks: ethtool ksettings
1034  *
1035  * Reports speed/duplex settings based on media_type
1036  **/
1037 static int i40e_get_link_ksettings(struct net_device *netdev,
1038                                    struct ethtool_link_ksettings *ks)
1039 {
1040         struct i40e_netdev_priv *np = netdev_priv(netdev);
1041         struct i40e_pf *pf = np->vsi->back;
1042         struct i40e_hw *hw = &pf->hw;
1043         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1044         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1045
1046         ethtool_link_ksettings_zero_link_mode(ks, supported);
1047         ethtool_link_ksettings_zero_link_mode(ks, advertising);
1048
1049         if (link_up)
1050                 i40e_get_settings_link_up(hw, ks, netdev, pf);
1051         else
1052                 i40e_get_settings_link_down(hw, ks, pf);
1053
1054         /* Now set the settings that don't rely on link being up/down */
1055         /* Set autoneg settings */
1056         ks->base.autoneg = ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1057                             AUTONEG_ENABLE : AUTONEG_DISABLE);
1058
1059         /* Set media type settings */
1060         switch (hw->phy.media_type) {
1061         case I40E_MEDIA_TYPE_BACKPLANE:
1062                 ethtool_link_ksettings_add_link_mode(ks, supported, Autoneg);
1063                 ethtool_link_ksettings_add_link_mode(ks, supported, Backplane);
1064                 ethtool_link_ksettings_add_link_mode(ks, advertising, Autoneg);
1065                 ethtool_link_ksettings_add_link_mode(ks, advertising,
1066                                                      Backplane);
1067                 ks->base.port = PORT_NONE;
1068                 break;
1069         case I40E_MEDIA_TYPE_BASET:
1070                 ethtool_link_ksettings_add_link_mode(ks, supported, TP);
1071                 ethtool_link_ksettings_add_link_mode(ks, advertising, TP);
1072                 ks->base.port = PORT_TP;
1073                 break;
1074         case I40E_MEDIA_TYPE_DA:
1075         case I40E_MEDIA_TYPE_CX4:
1076                 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1077                 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1078                 ks->base.port = PORT_DA;
1079                 break;
1080         case I40E_MEDIA_TYPE_FIBER:
1081                 ethtool_link_ksettings_add_link_mode(ks, supported, FIBRE);
1082                 ethtool_link_ksettings_add_link_mode(ks, advertising, FIBRE);
1083                 ks->base.port = PORT_FIBRE;
1084                 break;
1085         case I40E_MEDIA_TYPE_UNKNOWN:
1086         default:
1087                 ks->base.port = PORT_OTHER;
1088                 break;
1089         }
1090
1091         /* Set flow control settings */
1092         ethtool_link_ksettings_add_link_mode(ks, supported, Pause);
1093
1094         switch (hw->fc.requested_mode) {
1095         case I40E_FC_FULL:
1096                 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1097                 break;
1098         case I40E_FC_TX_PAUSE:
1099                 ethtool_link_ksettings_add_link_mode(ks, advertising,
1100                                                      Asym_Pause);
1101                 break;
1102         case I40E_FC_RX_PAUSE:
1103                 ethtool_link_ksettings_add_link_mode(ks, advertising, Pause);
1104                 ethtool_link_ksettings_add_link_mode(ks, advertising,
1105                                                      Asym_Pause);
1106                 break;
1107         default:
1108                 ethtool_link_ksettings_del_link_mode(ks, advertising, Pause);
1109                 ethtool_link_ksettings_del_link_mode(ks, advertising,
1110                                                      Asym_Pause);
1111                 break;
1112         }
1113
1114         return 0;
1115 }
1116
1117 /**
1118  * i40e_set_link_ksettings - Set Speed and Duplex
1119  * @netdev: network interface device structure
1120  * @ks: ethtool ksettings
1121  *
1122  * Set speed/duplex per media_types advertised/forced
1123  **/
1124 static int i40e_set_link_ksettings(struct net_device *netdev,
1125                                    const struct ethtool_link_ksettings *ks)
1126 {
1127         struct i40e_netdev_priv *np = netdev_priv(netdev);
1128         struct i40e_aq_get_phy_abilities_resp abilities;
1129         struct ethtool_link_ksettings safe_ks;
1130         struct ethtool_link_ksettings copy_ks;
1131         struct i40e_aq_set_phy_config config;
1132         struct i40e_pf *pf = np->vsi->back;
1133         struct i40e_vsi *vsi = np->vsi;
1134         struct i40e_hw *hw = &pf->hw;
1135         bool autoneg_changed = false;
1136         i40e_status status = 0;
1137         int timeout = 50;
1138         int err = 0;
1139         u8 autoneg;
1140
1141         /* Changing port settings is not supported if this isn't the
1142          * port's controlling PF
1143          */
1144         if (hw->partition_id != 1) {
1145                 i40e_partition_setting_complaint(pf);
1146                 return -EOPNOTSUPP;
1147         }
1148         if (vsi != pf->vsi[pf->lan_vsi])
1149                 return -EOPNOTSUPP;
1150         if (hw->phy.media_type != I40E_MEDIA_TYPE_BASET &&
1151             hw->phy.media_type != I40E_MEDIA_TYPE_FIBER &&
1152             hw->phy.media_type != I40E_MEDIA_TYPE_BACKPLANE &&
1153             hw->phy.media_type != I40E_MEDIA_TYPE_DA &&
1154             hw->phy.link_info.link_info & I40E_AQ_LINK_UP)
1155                 return -EOPNOTSUPP;
1156         if (hw->device_id == I40E_DEV_ID_KX_B ||
1157             hw->device_id == I40E_DEV_ID_KX_C ||
1158             hw->device_id == I40E_DEV_ID_20G_KR2 ||
1159             hw->device_id == I40E_DEV_ID_20G_KR2_A ||
1160             hw->device_id == I40E_DEV_ID_25G_B ||
1161             hw->device_id == I40E_DEV_ID_KX_X722) {
1162                 netdev_info(netdev, "Changing settings is not supported on backplane.\n");
1163                 return -EOPNOTSUPP;
1164         }
1165
1166         /* copy the ksettings to copy_ks to avoid modifying the origin */
1167         memcpy(&copy_ks, ks, sizeof(struct ethtool_link_ksettings));
1168
1169         /* save autoneg out of ksettings */
1170         autoneg = copy_ks.base.autoneg;
1171
1172         /* get our own copy of the bits to check against */
1173         memset(&safe_ks, 0, sizeof(struct ethtool_link_ksettings));
1174         safe_ks.base.cmd = copy_ks.base.cmd;
1175         safe_ks.base.link_mode_masks_nwords =
1176                 copy_ks.base.link_mode_masks_nwords;
1177         i40e_get_link_ksettings(netdev, &safe_ks);
1178
1179         /* Get link modes supported by hardware and check against modes
1180          * requested by the user.  Return an error if unsupported mode was set.
1181          */
1182         if (!bitmap_subset(copy_ks.link_modes.advertising,
1183                            safe_ks.link_modes.supported,
1184                            __ETHTOOL_LINK_MODE_MASK_NBITS))
1185                 return -EINVAL;
1186
1187         /* set autoneg back to what it currently is */
1188         copy_ks.base.autoneg = safe_ks.base.autoneg;
1189
1190         /* If copy_ks.base and safe_ks.base are not the same now, then they are
1191          * trying to set something that we do not support.
1192          */
1193         if (memcmp(&copy_ks.base, &safe_ks.base,
1194                    sizeof(struct ethtool_link_settings)))
1195                 return -EOPNOTSUPP;
1196
1197         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1198                 timeout--;
1199                 if (!timeout)
1200                         return -EBUSY;
1201                 usleep_range(1000, 2000);
1202         }
1203
1204         /* Get the current phy config */
1205         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1206                                               NULL);
1207         if (status) {
1208                 err = -EAGAIN;
1209                 goto done;
1210         }
1211
1212         /* Copy abilities to config in case autoneg is not
1213          * set below
1214          */
1215         memset(&config, 0, sizeof(struct i40e_aq_set_phy_config));
1216         config.abilities = abilities.abilities;
1217
1218         /* Check autoneg */
1219         if (autoneg == AUTONEG_ENABLE) {
1220                 /* If autoneg was not already enabled */
1221                 if (!(hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED)) {
1222                         /* If autoneg is not supported, return error */
1223                         if (!ethtool_link_ksettings_test_link_mode(&safe_ks,
1224                                                                    supported,
1225                                                                    Autoneg)) {
1226                                 netdev_info(netdev, "Autoneg not supported on this phy\n");
1227                                 err = -EINVAL;
1228                                 goto done;
1229                         }
1230                         /* Autoneg is allowed to change */
1231                         config.abilities = abilities.abilities |
1232                                            I40E_AQ_PHY_ENABLE_AN;
1233                         autoneg_changed = true;
1234                 }
1235         } else {
1236                 /* If autoneg is currently enabled */
1237                 if (hw->phy.link_info.an_info & I40E_AQ_AN_COMPLETED) {
1238                         /* If autoneg is supported 10GBASE_T is the only PHY
1239                          * that can disable it, so otherwise return error
1240                          */
1241                         if (ethtool_link_ksettings_test_link_mode(&safe_ks,
1242                                                                   supported,
1243                                                                   Autoneg) &&
1244                             hw->phy.link_info.phy_type !=
1245                             I40E_PHY_TYPE_10GBASE_T) {
1246                                 netdev_info(netdev, "Autoneg cannot be disabled on this phy\n");
1247                                 err = -EINVAL;
1248                                 goto done;
1249                         }
1250                         /* Autoneg is allowed to change */
1251                         config.abilities = abilities.abilities &
1252                                            ~I40E_AQ_PHY_ENABLE_AN;
1253                         autoneg_changed = true;
1254                 }
1255         }
1256
1257         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1258                                                   100baseT_Full))
1259                 config.link_speed |= I40E_LINK_SPEED_100MB;
1260         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1261                                                   1000baseT_Full) ||
1262             ethtool_link_ksettings_test_link_mode(ks, advertising,
1263                                                   1000baseX_Full) ||
1264             ethtool_link_ksettings_test_link_mode(ks, advertising,
1265                                                   1000baseKX_Full))
1266                 config.link_speed |= I40E_LINK_SPEED_1GB;
1267         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1268                                                   10000baseT_Full) ||
1269             ethtool_link_ksettings_test_link_mode(ks, advertising,
1270                                                   10000baseKX4_Full) ||
1271             ethtool_link_ksettings_test_link_mode(ks, advertising,
1272                                                   10000baseKR_Full) ||
1273             ethtool_link_ksettings_test_link_mode(ks, advertising,
1274                                                   10000baseCR_Full) ||
1275             ethtool_link_ksettings_test_link_mode(ks, advertising,
1276                                                   10000baseSR_Full) ||
1277             ethtool_link_ksettings_test_link_mode(ks, advertising,
1278                                                   10000baseLR_Full))
1279                 config.link_speed |= I40E_LINK_SPEED_10GB;
1280         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1281                                                   2500baseT_Full))
1282                 config.link_speed |= I40E_LINK_SPEED_2_5GB;
1283         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1284                                                   5000baseT_Full))
1285                 config.link_speed |= I40E_LINK_SPEED_5GB;
1286         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1287                                                   20000baseKR2_Full))
1288                 config.link_speed |= I40E_LINK_SPEED_20GB;
1289         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1290                                                   25000baseCR_Full) ||
1291             ethtool_link_ksettings_test_link_mode(ks, advertising,
1292                                                   25000baseKR_Full) ||
1293             ethtool_link_ksettings_test_link_mode(ks, advertising,
1294                                                   25000baseSR_Full))
1295                 config.link_speed |= I40E_LINK_SPEED_25GB;
1296         if (ethtool_link_ksettings_test_link_mode(ks, advertising,
1297                                                   40000baseKR4_Full) ||
1298             ethtool_link_ksettings_test_link_mode(ks, advertising,
1299                                                   40000baseCR4_Full) ||
1300             ethtool_link_ksettings_test_link_mode(ks, advertising,
1301                                                   40000baseSR4_Full) ||
1302             ethtool_link_ksettings_test_link_mode(ks, advertising,
1303                                                   40000baseLR4_Full))
1304                 config.link_speed |= I40E_LINK_SPEED_40GB;
1305
1306         /* If speed didn't get set, set it to what it currently is.
1307          * This is needed because if advertise is 0 (as it is when autoneg
1308          * is disabled) then speed won't get set.
1309          */
1310         if (!config.link_speed)
1311                 config.link_speed = abilities.link_speed;
1312         if (autoneg_changed || abilities.link_speed != config.link_speed) {
1313                 /* copy over the rest of the abilities */
1314                 config.phy_type = abilities.phy_type;
1315                 config.phy_type_ext = abilities.phy_type_ext;
1316                 config.eee_capability = abilities.eee_capability;
1317                 config.eeer = abilities.eeer_val;
1318                 config.low_power_ctrl = abilities.d3_lpan;
1319                 config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
1320                                     I40E_AQ_PHY_FEC_CONFIG_MASK;
1321
1322                 /* save the requested speeds */
1323                 hw->phy.link_info.requested_speeds = config.link_speed;
1324                 /* set link and auto negotiation so changes take effect */
1325                 config.abilities |= I40E_AQ_PHY_ENABLE_ATOMIC_LINK;
1326                 /* If link is up put link down */
1327                 if (hw->phy.link_info.link_info & I40E_AQ_LINK_UP) {
1328                         /* Tell the OS link is going down, the link will go
1329                          * back up when fw says it is ready asynchronously
1330                          */
1331                         i40e_print_link_message(vsi, false);
1332                         netif_carrier_off(netdev);
1333                         netif_tx_stop_all_queues(netdev);
1334                 }
1335
1336                 /* make the aq call */
1337                 status = i40e_aq_set_phy_config(hw, &config, NULL);
1338                 if (status) {
1339                         netdev_info(netdev,
1340                                     "Set phy config failed, err %s aq_err %s\n",
1341                                     i40e_stat_str(hw, status),
1342                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1343                         err = -EAGAIN;
1344                         goto done;
1345                 }
1346
1347                 status = i40e_update_link_info(hw);
1348                 if (status)
1349                         netdev_dbg(netdev,
1350                                    "Updating link info failed with err %s aq_err %s\n",
1351                                    i40e_stat_str(hw, status),
1352                                    i40e_aq_str(hw, hw->aq.asq_last_status));
1353
1354         } else {
1355                 netdev_info(netdev, "Nothing changed, exiting without setting anything.\n");
1356         }
1357
1358 done:
1359         clear_bit(__I40E_CONFIG_BUSY, pf->state);
1360
1361         return err;
1362 }
1363
1364 static int i40e_set_fec_cfg(struct net_device *netdev, u8 fec_cfg)
1365 {
1366         struct i40e_netdev_priv *np = netdev_priv(netdev);
1367         struct i40e_aq_get_phy_abilities_resp abilities;
1368         struct i40e_pf *pf = np->vsi->back;
1369         struct i40e_hw *hw = &pf->hw;
1370         i40e_status status = 0;
1371         u32 flags = 0;
1372         int err = 0;
1373
1374         flags = READ_ONCE(pf->flags);
1375         i40e_set_fec_in_flags(fec_cfg, &flags);
1376
1377         /* Get the current phy config */
1378         memset(&abilities, 0, sizeof(abilities));
1379         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1380                                               NULL);
1381         if (status) {
1382                 err = -EAGAIN;
1383                 goto done;
1384         }
1385
1386         if (abilities.fec_cfg_curr_mod_ext_info != fec_cfg) {
1387                 struct i40e_aq_set_phy_config config;
1388
1389                 memset(&config, 0, sizeof(config));
1390                 config.phy_type = abilities.phy_type;
1391                 config.abilities = abilities.abilities;
1392                 config.phy_type_ext = abilities.phy_type_ext;
1393                 config.link_speed = abilities.link_speed;
1394                 config.eee_capability = abilities.eee_capability;
1395                 config.eeer = abilities.eeer_val;
1396                 config.low_power_ctrl = abilities.d3_lpan;
1397                 config.fec_config = fec_cfg & I40E_AQ_PHY_FEC_CONFIG_MASK;
1398                 status = i40e_aq_set_phy_config(hw, &config, NULL);
1399                 if (status) {
1400                         netdev_info(netdev,
1401                                     "Set phy config failed, err %s aq_err %s\n",
1402                                     i40e_stat_str(hw, status),
1403                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1404                         err = -EAGAIN;
1405                         goto done;
1406                 }
1407                 pf->flags = flags;
1408                 status = i40e_update_link_info(hw);
1409                 if (status)
1410                         /* debug level message only due to relation to the link
1411                          * itself rather than to the FEC settings
1412                          * (e.g. no physical connection etc.)
1413                          */
1414                         netdev_dbg(netdev,
1415                                    "Updating link info failed with err %s aq_err %s\n",
1416                                    i40e_stat_str(hw, status),
1417                                    i40e_aq_str(hw, hw->aq.asq_last_status));
1418         }
1419
1420 done:
1421         return err;
1422 }
1423
1424 static int i40e_get_fec_param(struct net_device *netdev,
1425                               struct ethtool_fecparam *fecparam)
1426 {
1427         struct i40e_netdev_priv *np = netdev_priv(netdev);
1428         struct i40e_aq_get_phy_abilities_resp abilities;
1429         struct i40e_pf *pf = np->vsi->back;
1430         struct i40e_hw *hw = &pf->hw;
1431         i40e_status status = 0;
1432         int err = 0;
1433
1434         /* Get the current phy config */
1435         memset(&abilities, 0, sizeof(abilities));
1436         status = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
1437                                               NULL);
1438         if (status) {
1439                 err = -EAGAIN;
1440                 goto done;
1441         }
1442
1443         fecparam->fec = 0;
1444         if (abilities.fec_cfg_curr_mod_ext_info & I40E_AQ_SET_FEC_AUTO)
1445                 fecparam->fec |= ETHTOOL_FEC_AUTO;
1446         if ((abilities.fec_cfg_curr_mod_ext_info &
1447              I40E_AQ_SET_FEC_REQUEST_RS) ||
1448             (abilities.fec_cfg_curr_mod_ext_info &
1449              I40E_AQ_SET_FEC_ABILITY_RS))
1450                 fecparam->fec |= ETHTOOL_FEC_RS;
1451         if ((abilities.fec_cfg_curr_mod_ext_info &
1452              I40E_AQ_SET_FEC_REQUEST_KR) ||
1453             (abilities.fec_cfg_curr_mod_ext_info & I40E_AQ_SET_FEC_ABILITY_KR))
1454                 fecparam->fec |= ETHTOOL_FEC_BASER;
1455         if (abilities.fec_cfg_curr_mod_ext_info == 0)
1456                 fecparam->fec |= ETHTOOL_FEC_OFF;
1457
1458         if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_KR_ENA)
1459                 fecparam->active_fec = ETHTOOL_FEC_BASER;
1460         else if (hw->phy.link_info.fec_info & I40E_AQ_CONFIG_FEC_RS_ENA)
1461                 fecparam->active_fec = ETHTOOL_FEC_RS;
1462         else
1463                 fecparam->active_fec = ETHTOOL_FEC_OFF;
1464 done:
1465         return err;
1466 }
1467
1468 static int i40e_set_fec_param(struct net_device *netdev,
1469                               struct ethtool_fecparam *fecparam)
1470 {
1471         struct i40e_netdev_priv *np = netdev_priv(netdev);
1472         struct i40e_pf *pf = np->vsi->back;
1473         struct i40e_hw *hw = &pf->hw;
1474         u8 fec_cfg = 0;
1475         int err = 0;
1476
1477         if (hw->device_id != I40E_DEV_ID_25G_SFP28 &&
1478             hw->device_id != I40E_DEV_ID_25G_B) {
1479                 err = -EPERM;
1480                 goto done;
1481         }
1482
1483         switch (fecparam->fec) {
1484         case ETHTOOL_FEC_AUTO:
1485                 fec_cfg = I40E_AQ_SET_FEC_AUTO;
1486                 break;
1487         case ETHTOOL_FEC_RS:
1488                 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
1489                              I40E_AQ_SET_FEC_ABILITY_RS);
1490                 break;
1491         case ETHTOOL_FEC_BASER:
1492                 fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
1493                              I40E_AQ_SET_FEC_ABILITY_KR);
1494                 break;
1495         case ETHTOOL_FEC_OFF:
1496         case ETHTOOL_FEC_NONE:
1497                 fec_cfg = 0;
1498                 break;
1499         default:
1500                 dev_warn(&pf->pdev->dev, "Unsupported FEC mode: %d",
1501                          fecparam->fec);
1502                 err = -EINVAL;
1503                 goto done;
1504         }
1505
1506         err = i40e_set_fec_cfg(netdev, fec_cfg);
1507
1508 done:
1509         return err;
1510 }
1511
1512 static int i40e_nway_reset(struct net_device *netdev)
1513 {
1514         /* restart autonegotiation */
1515         struct i40e_netdev_priv *np = netdev_priv(netdev);
1516         struct i40e_pf *pf = np->vsi->back;
1517         struct i40e_hw *hw = &pf->hw;
1518         bool link_up = hw->phy.link_info.link_info & I40E_AQ_LINK_UP;
1519         i40e_status ret = 0;
1520
1521         ret = i40e_aq_set_link_restart_an(hw, link_up, NULL);
1522         if (ret) {
1523                 netdev_info(netdev, "link restart failed, err %s aq_err %s\n",
1524                             i40e_stat_str(hw, ret),
1525                             i40e_aq_str(hw, hw->aq.asq_last_status));
1526                 return -EIO;
1527         }
1528
1529         return 0;
1530 }
1531
1532 /**
1533  * i40e_get_pauseparam -  Get Flow Control status
1534  * @netdev: netdevice structure
1535  * @pause: buffer to return pause parameters
1536  *
1537  * Return tx/rx-pause status
1538  **/
1539 static void i40e_get_pauseparam(struct net_device *netdev,
1540                                 struct ethtool_pauseparam *pause)
1541 {
1542         struct i40e_netdev_priv *np = netdev_priv(netdev);
1543         struct i40e_pf *pf = np->vsi->back;
1544         struct i40e_hw *hw = &pf->hw;
1545         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1546         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1547
1548         pause->autoneg =
1549                 ((hw_link_info->an_info & I40E_AQ_AN_COMPLETED) ?
1550                   AUTONEG_ENABLE : AUTONEG_DISABLE);
1551
1552         /* PFC enabled so report LFC as off */
1553         if (dcbx_cfg->pfc.pfcenable) {
1554                 pause->rx_pause = 0;
1555                 pause->tx_pause = 0;
1556                 return;
1557         }
1558
1559         if (hw->fc.current_mode == I40E_FC_RX_PAUSE) {
1560                 pause->rx_pause = 1;
1561         } else if (hw->fc.current_mode == I40E_FC_TX_PAUSE) {
1562                 pause->tx_pause = 1;
1563         } else if (hw->fc.current_mode == I40E_FC_FULL) {
1564                 pause->rx_pause = 1;
1565                 pause->tx_pause = 1;
1566         }
1567 }
1568
1569 /**
1570  * i40e_set_pauseparam - Set Flow Control parameter
1571  * @netdev: network interface device structure
1572  * @pause: return tx/rx flow control status
1573  **/
1574 static int i40e_set_pauseparam(struct net_device *netdev,
1575                                struct ethtool_pauseparam *pause)
1576 {
1577         struct i40e_netdev_priv *np = netdev_priv(netdev);
1578         struct i40e_pf *pf = np->vsi->back;
1579         struct i40e_vsi *vsi = np->vsi;
1580         struct i40e_hw *hw = &pf->hw;
1581         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
1582         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
1583         bool link_up = hw_link_info->link_info & I40E_AQ_LINK_UP;
1584         i40e_status status;
1585         u8 aq_failures;
1586         int err = 0;
1587         u32 is_an;
1588
1589         /* Changing the port's flow control is not supported if this isn't the
1590          * port's controlling PF
1591          */
1592         if (hw->partition_id != 1) {
1593                 i40e_partition_setting_complaint(pf);
1594                 return -EOPNOTSUPP;
1595         }
1596
1597         if (vsi != pf->vsi[pf->lan_vsi])
1598                 return -EOPNOTSUPP;
1599
1600         is_an = hw_link_info->an_info & I40E_AQ_AN_COMPLETED;
1601         if (pause->autoneg != is_an) {
1602                 netdev_info(netdev, "To change autoneg please use: ethtool -s <dev> autoneg <on|off>\n");
1603                 return -EOPNOTSUPP;
1604         }
1605
1606         /* If we have link and don't have autoneg */
1607         if (!test_bit(__I40E_DOWN, pf->state) && !is_an) {
1608                 /* Send message that it might not necessarily work*/
1609                 netdev_info(netdev, "Autoneg did not complete so changing settings may not result in an actual change.\n");
1610         }
1611
1612         if (dcbx_cfg->pfc.pfcenable) {
1613                 netdev_info(netdev,
1614                             "Priority flow control enabled. Cannot set link flow control.\n");
1615                 return -EOPNOTSUPP;
1616         }
1617
1618         if (pause->rx_pause && pause->tx_pause)
1619                 hw->fc.requested_mode = I40E_FC_FULL;
1620         else if (pause->rx_pause && !pause->tx_pause)
1621                 hw->fc.requested_mode = I40E_FC_RX_PAUSE;
1622         else if (!pause->rx_pause && pause->tx_pause)
1623                 hw->fc.requested_mode = I40E_FC_TX_PAUSE;
1624         else if (!pause->rx_pause && !pause->tx_pause)
1625                 hw->fc.requested_mode = I40E_FC_NONE;
1626         else
1627                 return -EINVAL;
1628
1629         /* Tell the OS link is going down, the link will go back up when fw
1630          * says it is ready asynchronously
1631          */
1632         i40e_print_link_message(vsi, false);
1633         netif_carrier_off(netdev);
1634         netif_tx_stop_all_queues(netdev);
1635
1636         /* Set the fc mode and only restart an if link is up*/
1637         status = i40e_set_fc(hw, &aq_failures, link_up);
1638
1639         if (aq_failures & I40E_SET_FC_AQ_FAIL_GET) {
1640                 netdev_info(netdev, "Set fc failed on the get_phy_capabilities call with err %s aq_err %s\n",
1641                             i40e_stat_str(hw, status),
1642                             i40e_aq_str(hw, hw->aq.asq_last_status));
1643                 err = -EAGAIN;
1644         }
1645         if (aq_failures & I40E_SET_FC_AQ_FAIL_SET) {
1646                 netdev_info(netdev, "Set fc failed on the set_phy_config call with err %s aq_err %s\n",
1647                             i40e_stat_str(hw, status),
1648                             i40e_aq_str(hw, hw->aq.asq_last_status));
1649                 err = -EAGAIN;
1650         }
1651         if (aq_failures & I40E_SET_FC_AQ_FAIL_UPDATE) {
1652                 netdev_info(netdev, "Set fc failed on the get_link_info call with err %s aq_err %s\n",
1653                             i40e_stat_str(hw, status),
1654                             i40e_aq_str(hw, hw->aq.asq_last_status));
1655                 err = -EAGAIN;
1656         }
1657
1658         if (!test_bit(__I40E_DOWN, pf->state) && is_an) {
1659                 /* Give it a little more time to try to come back */
1660                 msleep(75);
1661                 if (!test_bit(__I40E_DOWN, pf->state))
1662                         return i40e_nway_reset(netdev);
1663         }
1664
1665         return err;
1666 }
1667
1668 static u32 i40e_get_msglevel(struct net_device *netdev)
1669 {
1670         struct i40e_netdev_priv *np = netdev_priv(netdev);
1671         struct i40e_pf *pf = np->vsi->back;
1672         u32 debug_mask = pf->hw.debug_mask;
1673
1674         if (debug_mask)
1675                 netdev_info(netdev, "i40e debug_mask: 0x%08X\n", debug_mask);
1676
1677         return pf->msg_enable;
1678 }
1679
1680 static void i40e_set_msglevel(struct net_device *netdev, u32 data)
1681 {
1682         struct i40e_netdev_priv *np = netdev_priv(netdev);
1683         struct i40e_pf *pf = np->vsi->back;
1684
1685         if (I40E_DEBUG_USER & data)
1686                 pf->hw.debug_mask = data;
1687         else
1688                 pf->msg_enable = data;
1689 }
1690
1691 static int i40e_get_regs_len(struct net_device *netdev)
1692 {
1693         int reg_count = 0;
1694         int i;
1695
1696         for (i = 0; i40e_reg_list[i].offset != 0; i++)
1697                 reg_count += i40e_reg_list[i].elements;
1698
1699         return reg_count * sizeof(u32);
1700 }
1701
1702 static void i40e_get_regs(struct net_device *netdev, struct ethtool_regs *regs,
1703                           void *p)
1704 {
1705         struct i40e_netdev_priv *np = netdev_priv(netdev);
1706         struct i40e_pf *pf = np->vsi->back;
1707         struct i40e_hw *hw = &pf->hw;
1708         u32 *reg_buf = p;
1709         unsigned int i, j, ri;
1710         u32 reg;
1711
1712         /* Tell ethtool which driver-version-specific regs output we have.
1713          *
1714          * At some point, if we have ethtool doing special formatting of
1715          * this data, it will rely on this version number to know how to
1716          * interpret things.  Hence, this needs to be updated if/when the
1717          * diags register table is changed.
1718          */
1719         regs->version = 1;
1720
1721         /* loop through the diags reg table for what to print */
1722         ri = 0;
1723         for (i = 0; i40e_reg_list[i].offset != 0; i++) {
1724                 for (j = 0; j < i40e_reg_list[i].elements; j++) {
1725                         reg = i40e_reg_list[i].offset
1726                                 + (j * i40e_reg_list[i].stride);
1727                         reg_buf[ri++] = rd32(hw, reg);
1728                 }
1729         }
1730
1731 }
1732
1733 static int i40e_get_eeprom(struct net_device *netdev,
1734                            struct ethtool_eeprom *eeprom, u8 *bytes)
1735 {
1736         struct i40e_netdev_priv *np = netdev_priv(netdev);
1737         struct i40e_hw *hw = &np->vsi->back->hw;
1738         struct i40e_pf *pf = np->vsi->back;
1739         int ret_val = 0, len, offset;
1740         u8 *eeprom_buff;
1741         u16 i, sectors;
1742         bool last;
1743         u32 magic;
1744
1745 #define I40E_NVM_SECTOR_SIZE  4096
1746         if (eeprom->len == 0)
1747                 return -EINVAL;
1748
1749         /* check for NVMUpdate access method */
1750         magic = hw->vendor_id | (hw->device_id << 16);
1751         if (eeprom->magic && eeprom->magic != magic) {
1752                 struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1753                 int errno = 0;
1754
1755                 /* make sure it is the right magic for NVMUpdate */
1756                 if ((eeprom->magic >> 16) != hw->device_id)
1757                         errno = -EINVAL;
1758                 else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1759                          test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1760                         errno = -EBUSY;
1761                 else
1762                         ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1763
1764                 if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1765                         dev_info(&pf->pdev->dev,
1766                                  "NVMUpdate read failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1767                                  ret_val, hw->aq.asq_last_status, errno,
1768                                  (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1769                                  cmd->offset, cmd->data_size);
1770
1771                 return errno;
1772         }
1773
1774         /* normal ethtool get_eeprom support */
1775         eeprom->magic = hw->vendor_id | (hw->device_id << 16);
1776
1777         eeprom_buff = kzalloc(eeprom->len, GFP_KERNEL);
1778         if (!eeprom_buff)
1779                 return -ENOMEM;
1780
1781         ret_val = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1782         if (ret_val) {
1783                 dev_info(&pf->pdev->dev,
1784                          "Failed Acquiring NVM resource for read err=%d status=0x%x\n",
1785                          ret_val, hw->aq.asq_last_status);
1786                 goto free_buff;
1787         }
1788
1789         sectors = eeprom->len / I40E_NVM_SECTOR_SIZE;
1790         sectors += (eeprom->len % I40E_NVM_SECTOR_SIZE) ? 1 : 0;
1791         len = I40E_NVM_SECTOR_SIZE;
1792         last = false;
1793         for (i = 0; i < sectors; i++) {
1794                 if (i == (sectors - 1)) {
1795                         len = eeprom->len - (I40E_NVM_SECTOR_SIZE * i);
1796                         last = true;
1797                 }
1798                 offset = eeprom->offset + (I40E_NVM_SECTOR_SIZE * i),
1799                 ret_val = i40e_aq_read_nvm(hw, 0x0, offset, len,
1800                                 (u8 *)eeprom_buff + (I40E_NVM_SECTOR_SIZE * i),
1801                                 last, NULL);
1802                 if (ret_val && hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
1803                         dev_info(&pf->pdev->dev,
1804                                  "read NVM failed, invalid offset 0x%x\n",
1805                                  offset);
1806                         break;
1807                 } else if (ret_val &&
1808                            hw->aq.asq_last_status == I40E_AQ_RC_EACCES) {
1809                         dev_info(&pf->pdev->dev,
1810                                  "read NVM failed, access, offset 0x%x\n",
1811                                  offset);
1812                         break;
1813                 } else if (ret_val) {
1814                         dev_info(&pf->pdev->dev,
1815                                  "read NVM failed offset %d err=%d status=0x%x\n",
1816                                  offset, ret_val, hw->aq.asq_last_status);
1817                         break;
1818                 }
1819         }
1820
1821         i40e_release_nvm(hw);
1822         memcpy(bytes, (u8 *)eeprom_buff, eeprom->len);
1823 free_buff:
1824         kfree(eeprom_buff);
1825         return ret_val;
1826 }
1827
1828 static int i40e_get_eeprom_len(struct net_device *netdev)
1829 {
1830         struct i40e_netdev_priv *np = netdev_priv(netdev);
1831         struct i40e_hw *hw = &np->vsi->back->hw;
1832         u32 val;
1833
1834 #define X722_EEPROM_SCOPE_LIMIT 0x5B9FFF
1835         if (hw->mac.type == I40E_MAC_X722) {
1836                 val = X722_EEPROM_SCOPE_LIMIT + 1;
1837                 return val;
1838         }
1839         val = (rd32(hw, I40E_GLPCI_LBARCTRL)
1840                 & I40E_GLPCI_LBARCTRL_FL_SIZE_MASK)
1841                 >> I40E_GLPCI_LBARCTRL_FL_SIZE_SHIFT;
1842         /* register returns value in power of 2, 64Kbyte chunks. */
1843         val = (64 * 1024) * BIT(val);
1844         return val;
1845 }
1846
1847 static int i40e_set_eeprom(struct net_device *netdev,
1848                            struct ethtool_eeprom *eeprom, u8 *bytes)
1849 {
1850         struct i40e_netdev_priv *np = netdev_priv(netdev);
1851         struct i40e_hw *hw = &np->vsi->back->hw;
1852         struct i40e_pf *pf = np->vsi->back;
1853         struct i40e_nvm_access *cmd = (struct i40e_nvm_access *)eeprom;
1854         int ret_val = 0;
1855         int errno = 0;
1856         u32 magic;
1857
1858         /* normal ethtool set_eeprom is not supported */
1859         magic = hw->vendor_id | (hw->device_id << 16);
1860         if (eeprom->magic == magic)
1861                 errno = -EOPNOTSUPP;
1862         /* check for NVMUpdate access method */
1863         else if (!eeprom->magic || (eeprom->magic >> 16) != hw->device_id)
1864                 errno = -EINVAL;
1865         else if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
1866                  test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
1867                 errno = -EBUSY;
1868         else
1869                 ret_val = i40e_nvmupd_command(hw, cmd, bytes, &errno);
1870
1871         if ((errno || ret_val) && (hw->debug_mask & I40E_DEBUG_NVM))
1872                 dev_info(&pf->pdev->dev,
1873                          "NVMUpdate write failed err=%d status=0x%x errno=%d module=%d offset=0x%x size=%d\n",
1874                          ret_val, hw->aq.asq_last_status, errno,
1875                          (u8)(cmd->config & I40E_NVM_MOD_PNT_MASK),
1876                          cmd->offset, cmd->data_size);
1877
1878         return errno;
1879 }
1880
1881 static void i40e_get_drvinfo(struct net_device *netdev,
1882                              struct ethtool_drvinfo *drvinfo)
1883 {
1884         struct i40e_netdev_priv *np = netdev_priv(netdev);
1885         struct i40e_vsi *vsi = np->vsi;
1886         struct i40e_pf *pf = vsi->back;
1887
1888         strlcpy(drvinfo->driver, i40e_driver_name, sizeof(drvinfo->driver));
1889         strlcpy(drvinfo->version, i40e_driver_version_str,
1890                 sizeof(drvinfo->version));
1891         strlcpy(drvinfo->fw_version, i40e_nvm_version_str(&pf->hw),
1892                 sizeof(drvinfo->fw_version));
1893         strlcpy(drvinfo->bus_info, pci_name(pf->pdev),
1894                 sizeof(drvinfo->bus_info));
1895         drvinfo->n_priv_flags = I40E_PRIV_FLAGS_STR_LEN;
1896         if (pf->hw.pf_id == 0)
1897                 drvinfo->n_priv_flags += I40E_GL_PRIV_FLAGS_STR_LEN;
1898 }
1899
1900 static void i40e_get_ringparam(struct net_device *netdev,
1901                                struct ethtool_ringparam *ring)
1902 {
1903         struct i40e_netdev_priv *np = netdev_priv(netdev);
1904         struct i40e_pf *pf = np->vsi->back;
1905         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
1906
1907         ring->rx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1908         ring->tx_max_pending = I40E_MAX_NUM_DESCRIPTORS;
1909         ring->rx_mini_max_pending = 0;
1910         ring->rx_jumbo_max_pending = 0;
1911         ring->rx_pending = vsi->rx_rings[0]->count;
1912         ring->tx_pending = vsi->tx_rings[0]->count;
1913         ring->rx_mini_pending = 0;
1914         ring->rx_jumbo_pending = 0;
1915 }
1916
1917 static bool i40e_active_tx_ring_index(struct i40e_vsi *vsi, u16 index)
1918 {
1919         if (i40e_enabled_xdp_vsi(vsi)) {
1920                 return index < vsi->num_queue_pairs ||
1921                         (index >= vsi->alloc_queue_pairs &&
1922                          index < vsi->alloc_queue_pairs + vsi->num_queue_pairs);
1923         }
1924
1925         return index < vsi->num_queue_pairs;
1926 }
1927
1928 static int i40e_set_ringparam(struct net_device *netdev,
1929                               struct ethtool_ringparam *ring)
1930 {
1931         struct i40e_ring *tx_rings = NULL, *rx_rings = NULL;
1932         struct i40e_netdev_priv *np = netdev_priv(netdev);
1933         struct i40e_hw *hw = &np->vsi->back->hw;
1934         struct i40e_vsi *vsi = np->vsi;
1935         struct i40e_pf *pf = vsi->back;
1936         u32 new_rx_count, new_tx_count;
1937         u16 tx_alloc_queue_pairs;
1938         int timeout = 50;
1939         int i, err = 0;
1940
1941         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
1942                 return -EINVAL;
1943
1944         if (ring->tx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1945             ring->tx_pending < I40E_MIN_NUM_DESCRIPTORS ||
1946             ring->rx_pending > I40E_MAX_NUM_DESCRIPTORS ||
1947             ring->rx_pending < I40E_MIN_NUM_DESCRIPTORS) {
1948                 netdev_info(netdev,
1949                             "Descriptors requested (Tx: %d / Rx: %d) out of range [%d-%d]\n",
1950                             ring->tx_pending, ring->rx_pending,
1951                             I40E_MIN_NUM_DESCRIPTORS, I40E_MAX_NUM_DESCRIPTORS);
1952                 return -EINVAL;
1953         }
1954
1955         new_tx_count = ALIGN(ring->tx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1956         new_rx_count = ALIGN(ring->rx_pending, I40E_REQ_DESCRIPTOR_MULTIPLE);
1957
1958         /* if nothing to do return success */
1959         if ((new_tx_count == vsi->tx_rings[0]->count) &&
1960             (new_rx_count == vsi->rx_rings[0]->count))
1961                 return 0;
1962
1963         /* If there is a AF_XDP UMEM attached to any of Rx rings,
1964          * disallow changing the number of descriptors -- regardless
1965          * if the netdev is running or not.
1966          */
1967         if (i40e_xsk_any_rx_ring_enabled(vsi))
1968                 return -EBUSY;
1969
1970         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
1971                 timeout--;
1972                 if (!timeout)
1973                         return -EBUSY;
1974                 usleep_range(1000, 2000);
1975         }
1976
1977         if (!netif_running(vsi->netdev)) {
1978                 /* simple case - set for the next time the netdev is started */
1979                 for (i = 0; i < vsi->num_queue_pairs; i++) {
1980                         vsi->tx_rings[i]->count = new_tx_count;
1981                         vsi->rx_rings[i]->count = new_rx_count;
1982                         if (i40e_enabled_xdp_vsi(vsi))
1983                                 vsi->xdp_rings[i]->count = new_tx_count;
1984                 }
1985                 vsi->num_tx_desc = new_tx_count;
1986                 vsi->num_rx_desc = new_rx_count;
1987                 goto done;
1988         }
1989
1990         /* We can't just free everything and then setup again,
1991          * because the ISRs in MSI-X mode get passed pointers
1992          * to the Tx and Rx ring structs.
1993          */
1994
1995         /* alloc updated Tx and XDP Tx resources */
1996         tx_alloc_queue_pairs = vsi->alloc_queue_pairs *
1997                                (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
1998         if (new_tx_count != vsi->tx_rings[0]->count) {
1999                 netdev_info(netdev,
2000                             "Changing Tx descriptor count from %d to %d.\n",
2001                             vsi->tx_rings[0]->count, new_tx_count);
2002                 tx_rings = kcalloc(tx_alloc_queue_pairs,
2003                                    sizeof(struct i40e_ring), GFP_KERNEL);
2004                 if (!tx_rings) {
2005                         err = -ENOMEM;
2006                         goto done;
2007                 }
2008
2009                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2010                         if (!i40e_active_tx_ring_index(vsi, i))
2011                                 continue;
2012
2013                         tx_rings[i] = *vsi->tx_rings[i];
2014                         tx_rings[i].count = new_tx_count;
2015                         /* the desc and bi pointers will be reallocated in the
2016                          * setup call
2017                          */
2018                         tx_rings[i].desc = NULL;
2019                         tx_rings[i].rx_bi = NULL;
2020                         err = i40e_setup_tx_descriptors(&tx_rings[i]);
2021                         if (err) {
2022                                 while (i) {
2023                                         i--;
2024                                         if (!i40e_active_tx_ring_index(vsi, i))
2025                                                 continue;
2026                                         i40e_free_tx_resources(&tx_rings[i]);
2027                                 }
2028                                 kfree(tx_rings);
2029                                 tx_rings = NULL;
2030
2031                                 goto done;
2032                         }
2033                 }
2034         }
2035
2036         /* alloc updated Rx resources */
2037         if (new_rx_count != vsi->rx_rings[0]->count) {
2038                 netdev_info(netdev,
2039                             "Changing Rx descriptor count from %d to %d\n",
2040                             vsi->rx_rings[0]->count, new_rx_count);
2041                 rx_rings = kcalloc(vsi->alloc_queue_pairs,
2042                                    sizeof(struct i40e_ring), GFP_KERNEL);
2043                 if (!rx_rings) {
2044                         err = -ENOMEM;
2045                         goto free_tx;
2046                 }
2047
2048                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2049                         u16 unused;
2050
2051                         /* clone ring and setup updated count */
2052                         rx_rings[i] = *vsi->rx_rings[i];
2053                         rx_rings[i].count = new_rx_count;
2054                         /* the desc and bi pointers will be reallocated in the
2055                          * setup call
2056                          */
2057                         rx_rings[i].desc = NULL;
2058                         rx_rings[i].rx_bi = NULL;
2059                         /* Clear cloned XDP RX-queue info before setup call */
2060                         memset(&rx_rings[i].xdp_rxq, 0, sizeof(rx_rings[i].xdp_rxq));
2061                         /* this is to allow wr32 to have something to write to
2062                          * during early allocation of Rx buffers
2063                          */
2064                         rx_rings[i].tail = hw->hw_addr + I40E_PRTGEN_STATUS;
2065                         err = i40e_setup_rx_descriptors(&rx_rings[i]);
2066                         if (err)
2067                                 goto rx_unwind;
2068
2069                         /* now allocate the Rx buffers to make sure the OS
2070                          * has enough memory, any failure here means abort
2071                          */
2072                         unused = I40E_DESC_UNUSED(&rx_rings[i]);
2073                         err = i40e_alloc_rx_buffers(&rx_rings[i], unused);
2074 rx_unwind:
2075                         if (err) {
2076                                 do {
2077                                         i40e_free_rx_resources(&rx_rings[i]);
2078                                 } while (i--);
2079                                 kfree(rx_rings);
2080                                 rx_rings = NULL;
2081
2082                                 goto free_tx;
2083                         }
2084                 }
2085         }
2086
2087         /* Bring interface down, copy in the new ring info,
2088          * then restore the interface
2089          */
2090         i40e_down(vsi);
2091
2092         if (tx_rings) {
2093                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2094                         if (i40e_active_tx_ring_index(vsi, i)) {
2095                                 i40e_free_tx_resources(vsi->tx_rings[i]);
2096                                 *vsi->tx_rings[i] = tx_rings[i];
2097                         }
2098                 }
2099                 kfree(tx_rings);
2100                 tx_rings = NULL;
2101         }
2102
2103         if (rx_rings) {
2104                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2105                         i40e_free_rx_resources(vsi->rx_rings[i]);
2106                         /* get the real tail offset */
2107                         rx_rings[i].tail = vsi->rx_rings[i]->tail;
2108                         /* this is to fake out the allocation routine
2109                          * into thinking it has to realloc everything
2110                          * but the recycling logic will let us re-use
2111                          * the buffers allocated above
2112                          */
2113                         rx_rings[i].next_to_use = 0;
2114                         rx_rings[i].next_to_clean = 0;
2115                         rx_rings[i].next_to_alloc = 0;
2116                         /* do a struct copy */
2117                         *vsi->rx_rings[i] = rx_rings[i];
2118                 }
2119                 kfree(rx_rings);
2120                 rx_rings = NULL;
2121         }
2122
2123         vsi->num_tx_desc = new_tx_count;
2124         vsi->num_rx_desc = new_rx_count;
2125         i40e_up(vsi);
2126
2127 free_tx:
2128         /* error cleanup if the Rx allocations failed after getting Tx */
2129         if (tx_rings) {
2130                 for (i = 0; i < tx_alloc_queue_pairs; i++) {
2131                         if (i40e_active_tx_ring_index(vsi, i))
2132                                 i40e_free_tx_resources(vsi->tx_rings[i]);
2133                 }
2134                 kfree(tx_rings);
2135                 tx_rings = NULL;
2136         }
2137
2138 done:
2139         clear_bit(__I40E_CONFIG_BUSY, pf->state);
2140
2141         return err;
2142 }
2143
2144 /**
2145  * i40e_get_stats_count - return the stats count for a device
2146  * @netdev: the netdev to return the count for
2147  *
2148  * Returns the total number of statistics for this netdev. Note that even
2149  * though this is a function, it is required that the count for a specific
2150  * netdev must never change. Basing the count on static values such as the
2151  * maximum number of queues or the device type is ok. However, the API for
2152  * obtaining stats is *not* safe against changes based on non-static
2153  * values such as the *current* number of queues, or runtime flags.
2154  *
2155  * If a statistic is not always enabled, return it as part of the count
2156  * anyways, always return its string, and report its value as zero.
2157  **/
2158 static int i40e_get_stats_count(struct net_device *netdev)
2159 {
2160         struct i40e_netdev_priv *np = netdev_priv(netdev);
2161         struct i40e_vsi *vsi = np->vsi;
2162         struct i40e_pf *pf = vsi->back;
2163         int stats_len;
2164
2165         if (vsi == pf->vsi[pf->lan_vsi] && pf->hw.partition_id == 1)
2166                 stats_len = I40E_PF_STATS_LEN;
2167         else
2168                 stats_len = I40E_VSI_STATS_LEN;
2169
2170         /* The number of stats reported for a given net_device must remain
2171          * constant throughout the life of that device.
2172          *
2173          * This is because the API for obtaining the size, strings, and stats
2174          * is spread out over three separate ethtool ioctls. There is no safe
2175          * way to lock the number of stats across these calls, so we must
2176          * assume that they will never change.
2177          *
2178          * Due to this, we report the maximum number of queues, even if not
2179          * every queue is currently configured. Since we always allocate
2180          * queues in pairs, we'll just use netdev->num_tx_queues * 2. This
2181          * works because the num_tx_queues is set at device creation and never
2182          * changes.
2183          */
2184         stats_len += I40E_QUEUE_STATS_LEN * 2 * netdev->num_tx_queues;
2185
2186         return stats_len;
2187 }
2188
2189 static int i40e_get_sset_count(struct net_device *netdev, int sset)
2190 {
2191         struct i40e_netdev_priv *np = netdev_priv(netdev);
2192         struct i40e_vsi *vsi = np->vsi;
2193         struct i40e_pf *pf = vsi->back;
2194
2195         switch (sset) {
2196         case ETH_SS_TEST:
2197                 return I40E_TEST_LEN;
2198         case ETH_SS_STATS:
2199                 return i40e_get_stats_count(netdev);
2200         case ETH_SS_PRIV_FLAGS:
2201                 return I40E_PRIV_FLAGS_STR_LEN +
2202                         (pf->hw.pf_id == 0 ? I40E_GL_PRIV_FLAGS_STR_LEN : 0);
2203         default:
2204                 return -EOPNOTSUPP;
2205         }
2206 }
2207
2208 /**
2209  * i40e_get_pfc_stats - copy HW PFC statistics to formatted structure
2210  * @pf: the PF device structure
2211  * @i: the priority value to copy
2212  *
2213  * The PFC stats are found as arrays in pf->stats, which is not easy to pass
2214  * into i40e_add_ethtool_stats. Produce a formatted i40e_pfc_stats structure
2215  * of the PFC stats for the given priority.
2216  **/
2217 static inline struct i40e_pfc_stats
2218 i40e_get_pfc_stats(struct i40e_pf *pf, unsigned int i)
2219 {
2220 #define I40E_GET_PFC_STAT(stat, priority) \
2221         .stat = pf->stats.stat[priority]
2222
2223         struct i40e_pfc_stats pfc = {
2224                 I40E_GET_PFC_STAT(priority_xon_rx, i),
2225                 I40E_GET_PFC_STAT(priority_xoff_rx, i),
2226                 I40E_GET_PFC_STAT(priority_xon_tx, i),
2227                 I40E_GET_PFC_STAT(priority_xoff_tx, i),
2228                 I40E_GET_PFC_STAT(priority_xon_2_xoff, i),
2229         };
2230         return pfc;
2231 }
2232
2233 /**
2234  * i40e_get_ethtool_stats - copy stat values into supplied buffer
2235  * @netdev: the netdev to collect stats for
2236  * @stats: ethtool stats command structure
2237  * @data: ethtool supplied buffer
2238  *
2239  * Copy the stats values for this netdev into the buffer. Expects data to be
2240  * pre-allocated to the size returned by i40e_get_stats_count.. Note that all
2241  * statistics must be copied in a static order, and the count must not change
2242  * for a given netdev. See i40e_get_stats_count for more details.
2243  *
2244  * If a statistic is not currently valid (such as a disabled queue), this
2245  * function reports its value as zero.
2246  **/
2247 static void i40e_get_ethtool_stats(struct net_device *netdev,
2248                                    struct ethtool_stats *stats, u64 *data)
2249 {
2250         struct i40e_netdev_priv *np = netdev_priv(netdev);
2251         struct i40e_vsi *vsi = np->vsi;
2252         struct i40e_pf *pf = vsi->back;
2253         struct i40e_veb *veb = pf->veb[pf->lan_veb];
2254         unsigned int i;
2255         bool veb_stats;
2256         u64 *p = data;
2257
2258         i40e_update_stats(vsi);
2259
2260         i40e_add_ethtool_stats(&data, i40e_get_vsi_stats_struct(vsi),
2261                                i40e_gstrings_net_stats);
2262
2263         i40e_add_ethtool_stats(&data, vsi, i40e_gstrings_misc_stats);
2264
2265         rcu_read_lock();
2266         for (i = 0; i < netdev->num_tx_queues; i++) {
2267                 i40e_add_queue_stats(&data, READ_ONCE(vsi->tx_rings[i]));
2268                 i40e_add_queue_stats(&data, READ_ONCE(vsi->rx_rings[i]));
2269         }
2270         rcu_read_unlock();
2271
2272         if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2273                 goto check_data_pointer;
2274
2275         veb_stats = ((pf->lan_veb != I40E_NO_VEB) &&
2276                      (pf->flags & I40E_FLAG_VEB_STATS_ENABLED));
2277
2278         /* If veb stats aren't enabled, pass NULL instead of the veb so that
2279          * we initialize stats to zero and update the data pointer
2280          * intelligently
2281          */
2282         i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
2283                                i40e_gstrings_veb_stats);
2284
2285         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2286                 i40e_add_ethtool_stats(&data, veb_stats ? veb : NULL,
2287                                        i40e_gstrings_veb_tc_stats);
2288
2289         i40e_add_ethtool_stats(&data, pf, i40e_gstrings_stats);
2290
2291         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
2292                 struct i40e_pfc_stats pfc = i40e_get_pfc_stats(pf, i);
2293
2294                 i40e_add_ethtool_stats(&data, &pfc, i40e_gstrings_pfc_stats);
2295         }
2296
2297 check_data_pointer:
2298         WARN_ONCE(data - p != i40e_get_stats_count(netdev),
2299                   "ethtool stats count mismatch!");
2300 }
2301
2302 /**
2303  * i40e_get_stat_strings - copy stat strings into supplied buffer
2304  * @netdev: the netdev to collect strings for
2305  * @data: supplied buffer to copy strings into
2306  *
2307  * Copy the strings related to stats for this netdev. Expects data to be
2308  * pre-allocated with the size reported by i40e_get_stats_count. Note that the
2309  * strings must be copied in a static order and the total count must not
2310  * change for a given netdev. See i40e_get_stats_count for more details.
2311  **/
2312 static void i40e_get_stat_strings(struct net_device *netdev, u8 *data)
2313 {
2314         struct i40e_netdev_priv *np = netdev_priv(netdev);
2315         struct i40e_vsi *vsi = np->vsi;
2316         struct i40e_pf *pf = vsi->back;
2317         unsigned int i;
2318         u8 *p = data;
2319
2320         i40e_add_stat_strings(&data, i40e_gstrings_net_stats);
2321
2322         i40e_add_stat_strings(&data, i40e_gstrings_misc_stats);
2323
2324         for (i = 0; i < netdev->num_tx_queues; i++) {
2325                 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2326                                       "tx", i);
2327                 i40e_add_stat_strings(&data, i40e_gstrings_queue_stats,
2328                                       "rx", i);
2329         }
2330
2331         if (vsi != pf->vsi[pf->lan_vsi] || pf->hw.partition_id != 1)
2332                 return;
2333
2334         i40e_add_stat_strings(&data, i40e_gstrings_veb_stats);
2335
2336         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
2337                 i40e_add_stat_strings(&data, i40e_gstrings_veb_tc_stats, i);
2338
2339         i40e_add_stat_strings(&data, i40e_gstrings_stats);
2340
2341         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
2342                 i40e_add_stat_strings(&data, i40e_gstrings_pfc_stats, i);
2343
2344         WARN_ONCE(data - p != i40e_get_stats_count(netdev) * ETH_GSTRING_LEN,
2345                   "stat strings count mismatch!");
2346 }
2347
2348 static void i40e_get_priv_flag_strings(struct net_device *netdev, u8 *data)
2349 {
2350         struct i40e_netdev_priv *np = netdev_priv(netdev);
2351         struct i40e_vsi *vsi = np->vsi;
2352         struct i40e_pf *pf = vsi->back;
2353         char *p = (char *)data;
2354         unsigned int i;
2355
2356         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
2357                 snprintf(p, ETH_GSTRING_LEN, "%s",
2358                          i40e_gstrings_priv_flags[i].flag_string);
2359                 p += ETH_GSTRING_LEN;
2360         }
2361         if (pf->hw.pf_id != 0)
2362                 return;
2363         for (i = 0; i < I40E_GL_PRIV_FLAGS_STR_LEN; i++) {
2364                 snprintf(p, ETH_GSTRING_LEN, "%s",
2365                          i40e_gl_gstrings_priv_flags[i].flag_string);
2366                 p += ETH_GSTRING_LEN;
2367         }
2368 }
2369
2370 static void i40e_get_strings(struct net_device *netdev, u32 stringset,
2371                              u8 *data)
2372 {
2373         switch (stringset) {
2374         case ETH_SS_TEST:
2375                 memcpy(data, i40e_gstrings_test,
2376                        I40E_TEST_LEN * ETH_GSTRING_LEN);
2377                 break;
2378         case ETH_SS_STATS:
2379                 i40e_get_stat_strings(netdev, data);
2380                 break;
2381         case ETH_SS_PRIV_FLAGS:
2382                 i40e_get_priv_flag_strings(netdev, data);
2383                 break;
2384         default:
2385                 break;
2386         }
2387 }
2388
2389 static int i40e_get_ts_info(struct net_device *dev,
2390                             struct ethtool_ts_info *info)
2391 {
2392         struct i40e_pf *pf = i40e_netdev_to_pf(dev);
2393
2394         /* only report HW timestamping if PTP is enabled */
2395         if (!(pf->flags & I40E_FLAG_PTP))
2396                 return ethtool_op_get_ts_info(dev, info);
2397
2398         info->so_timestamping = SOF_TIMESTAMPING_TX_SOFTWARE |
2399                                 SOF_TIMESTAMPING_RX_SOFTWARE |
2400                                 SOF_TIMESTAMPING_SOFTWARE |
2401                                 SOF_TIMESTAMPING_TX_HARDWARE |
2402                                 SOF_TIMESTAMPING_RX_HARDWARE |
2403                                 SOF_TIMESTAMPING_RAW_HARDWARE;
2404
2405         if (pf->ptp_clock)
2406                 info->phc_index = ptp_clock_index(pf->ptp_clock);
2407         else
2408                 info->phc_index = -1;
2409
2410         info->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ON);
2411
2412         info->rx_filters = BIT(HWTSTAMP_FILTER_NONE) |
2413                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
2414                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
2415                            BIT(HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ);
2416
2417         if (pf->hw_features & I40E_HW_PTP_L4_CAPABLE)
2418                 info->rx_filters |= BIT(HWTSTAMP_FILTER_PTP_V1_L4_SYNC) |
2419                                     BIT(HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ) |
2420                                     BIT(HWTSTAMP_FILTER_PTP_V2_EVENT) |
2421                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
2422                                     BIT(HWTSTAMP_FILTER_PTP_V2_SYNC) |
2423                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
2424                                     BIT(HWTSTAMP_FILTER_PTP_V2_DELAY_REQ) |
2425                                     BIT(HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ);
2426
2427         return 0;
2428 }
2429
2430 static u64 i40e_link_test(struct net_device *netdev, u64 *data)
2431 {
2432         struct i40e_netdev_priv *np = netdev_priv(netdev);
2433         struct i40e_pf *pf = np->vsi->back;
2434         i40e_status status;
2435         bool link_up = false;
2436
2437         netif_info(pf, hw, netdev, "link test\n");
2438         status = i40e_get_link_status(&pf->hw, &link_up);
2439         if (status) {
2440                 netif_err(pf, drv, netdev, "link query timed out, please retry test\n");
2441                 *data = 1;
2442                 return *data;
2443         }
2444
2445         if (link_up)
2446                 *data = 0;
2447         else
2448                 *data = 1;
2449
2450         return *data;
2451 }
2452
2453 static u64 i40e_reg_test(struct net_device *netdev, u64 *data)
2454 {
2455         struct i40e_netdev_priv *np = netdev_priv(netdev);
2456         struct i40e_pf *pf = np->vsi->back;
2457
2458         netif_info(pf, hw, netdev, "register test\n");
2459         *data = i40e_diag_reg_test(&pf->hw);
2460
2461         return *data;
2462 }
2463
2464 static u64 i40e_eeprom_test(struct net_device *netdev, u64 *data)
2465 {
2466         struct i40e_netdev_priv *np = netdev_priv(netdev);
2467         struct i40e_pf *pf = np->vsi->back;
2468
2469         netif_info(pf, hw, netdev, "eeprom test\n");
2470         *data = i40e_diag_eeprom_test(&pf->hw);
2471
2472         /* forcebly clear the NVM Update state machine */
2473         pf->hw.nvmupd_state = I40E_NVMUPD_STATE_INIT;
2474
2475         return *data;
2476 }
2477
2478 static u64 i40e_intr_test(struct net_device *netdev, u64 *data)
2479 {
2480         struct i40e_netdev_priv *np = netdev_priv(netdev);
2481         struct i40e_pf *pf = np->vsi->back;
2482         u16 swc_old = pf->sw_int_count;
2483
2484         netif_info(pf, hw, netdev, "interrupt test\n");
2485         wr32(&pf->hw, I40E_PFINT_DYN_CTL0,
2486              (I40E_PFINT_DYN_CTL0_INTENA_MASK |
2487               I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
2488               I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
2489               I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
2490               I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
2491         usleep_range(1000, 2000);
2492         *data = (swc_old == pf->sw_int_count);
2493
2494         return *data;
2495 }
2496
2497 static inline bool i40e_active_vfs(struct i40e_pf *pf)
2498 {
2499         struct i40e_vf *vfs = pf->vf;
2500         int i;
2501
2502         for (i = 0; i < pf->num_alloc_vfs; i++)
2503                 if (test_bit(I40E_VF_STATE_ACTIVE, &vfs[i].vf_states))
2504                         return true;
2505         return false;
2506 }
2507
2508 static inline bool i40e_active_vmdqs(struct i40e_pf *pf)
2509 {
2510         return !!i40e_find_vsi_by_type(pf, I40E_VSI_VMDQ2);
2511 }
2512
2513 static void i40e_diag_test(struct net_device *netdev,
2514                            struct ethtool_test *eth_test, u64 *data)
2515 {
2516         struct i40e_netdev_priv *np = netdev_priv(netdev);
2517         bool if_running = netif_running(netdev);
2518         struct i40e_pf *pf = np->vsi->back;
2519
2520         if (eth_test->flags == ETH_TEST_FL_OFFLINE) {
2521                 /* Offline tests */
2522                 netif_info(pf, drv, netdev, "offline testing starting\n");
2523
2524                 set_bit(__I40E_TESTING, pf->state);
2525
2526                 if (i40e_active_vfs(pf) || i40e_active_vmdqs(pf)) {
2527                         dev_warn(&pf->pdev->dev,
2528                                  "Please take active VFs and Netqueues offline and restart the adapter before running NIC diagnostics\n");
2529                         data[I40E_ETH_TEST_REG]         = 1;
2530                         data[I40E_ETH_TEST_EEPROM]      = 1;
2531                         data[I40E_ETH_TEST_INTR]        = 1;
2532                         data[I40E_ETH_TEST_LINK]        = 1;
2533                         eth_test->flags |= ETH_TEST_FL_FAILED;
2534                         clear_bit(__I40E_TESTING, pf->state);
2535                         goto skip_ol_tests;
2536                 }
2537
2538                 /* If the device is online then take it offline */
2539                 if (if_running)
2540                         /* indicate we're in test mode */
2541                         i40e_close(netdev);
2542                 else
2543                         /* This reset does not affect link - if it is
2544                          * changed to a type of reset that does affect
2545                          * link then the following link test would have
2546                          * to be moved to before the reset
2547                          */
2548                         i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2549
2550                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2551                         eth_test->flags |= ETH_TEST_FL_FAILED;
2552
2553                 if (i40e_eeprom_test(netdev, &data[I40E_ETH_TEST_EEPROM]))
2554                         eth_test->flags |= ETH_TEST_FL_FAILED;
2555
2556                 if (i40e_intr_test(netdev, &data[I40E_ETH_TEST_INTR]))
2557                         eth_test->flags |= ETH_TEST_FL_FAILED;
2558
2559                 /* run reg test last, a reset is required after it */
2560                 if (i40e_reg_test(netdev, &data[I40E_ETH_TEST_REG]))
2561                         eth_test->flags |= ETH_TEST_FL_FAILED;
2562
2563                 clear_bit(__I40E_TESTING, pf->state);
2564                 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
2565
2566                 if (if_running)
2567                         i40e_open(netdev);
2568         } else {
2569                 /* Online tests */
2570                 netif_info(pf, drv, netdev, "online testing starting\n");
2571
2572                 if (i40e_link_test(netdev, &data[I40E_ETH_TEST_LINK]))
2573                         eth_test->flags |= ETH_TEST_FL_FAILED;
2574
2575                 /* Offline only tests, not run in online; pass by default */
2576                 data[I40E_ETH_TEST_REG] = 0;
2577                 data[I40E_ETH_TEST_EEPROM] = 0;
2578                 data[I40E_ETH_TEST_INTR] = 0;
2579         }
2580
2581 skip_ol_tests:
2582
2583         netif_info(pf, drv, netdev, "testing finished\n");
2584 }
2585
2586 static void i40e_get_wol(struct net_device *netdev,
2587                          struct ethtool_wolinfo *wol)
2588 {
2589         struct i40e_netdev_priv *np = netdev_priv(netdev);
2590         struct i40e_pf *pf = np->vsi->back;
2591         struct i40e_hw *hw = &pf->hw;
2592         u16 wol_nvm_bits;
2593
2594         /* NVM bit on means WoL disabled for the port */
2595         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2596         if ((BIT(hw->port) & wol_nvm_bits) || (hw->partition_id != 1)) {
2597                 wol->supported = 0;
2598                 wol->wolopts = 0;
2599         } else {
2600                 wol->supported = WAKE_MAGIC;
2601                 wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0);
2602         }
2603 }
2604
2605 /**
2606  * i40e_set_wol - set the WakeOnLAN configuration
2607  * @netdev: the netdev in question
2608  * @wol: the ethtool WoL setting data
2609  **/
2610 static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
2611 {
2612         struct i40e_netdev_priv *np = netdev_priv(netdev);
2613         struct i40e_pf *pf = np->vsi->back;
2614         struct i40e_vsi *vsi = np->vsi;
2615         struct i40e_hw *hw = &pf->hw;
2616         u16 wol_nvm_bits;
2617
2618         /* WoL not supported if this isn't the controlling PF on the port */
2619         if (hw->partition_id != 1) {
2620                 i40e_partition_setting_complaint(pf);
2621                 return -EOPNOTSUPP;
2622         }
2623
2624         if (vsi != pf->vsi[pf->lan_vsi])
2625                 return -EOPNOTSUPP;
2626
2627         /* NVM bit on means WoL disabled for the port */
2628         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
2629         if (BIT(hw->port) & wol_nvm_bits)
2630                 return -EOPNOTSUPP;
2631
2632         /* only magic packet is supported */
2633         if (wol->wolopts & ~WAKE_MAGIC)
2634                 return -EOPNOTSUPP;
2635
2636         /* is this a new value? */
2637         if (pf->wol_en != !!wol->wolopts) {
2638                 pf->wol_en = !!wol->wolopts;
2639                 device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
2640         }
2641
2642         return 0;
2643 }
2644
2645 static int i40e_set_phys_id(struct net_device *netdev,
2646                             enum ethtool_phys_id_state state)
2647 {
2648         struct i40e_netdev_priv *np = netdev_priv(netdev);
2649         i40e_status ret = 0;
2650         struct i40e_pf *pf = np->vsi->back;
2651         struct i40e_hw *hw = &pf->hw;
2652         int blink_freq = 2;
2653         u16 temp_status;
2654
2655         switch (state) {
2656         case ETHTOOL_ID_ACTIVE:
2657                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2658                         pf->led_status = i40e_led_get(hw);
2659                 } else {
2660                         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2661                                 i40e_aq_set_phy_debug(hw, I40E_PHY_DEBUG_ALL,
2662                                                       NULL);
2663                         ret = i40e_led_get_phy(hw, &temp_status,
2664                                                &pf->phy_led_val);
2665                         pf->led_status = temp_status;
2666                 }
2667                 return blink_freq;
2668         case ETHTOOL_ID_ON:
2669                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2670                         i40e_led_set(hw, 0xf, false);
2671                 else
2672                         ret = i40e_led_set_phy(hw, true, pf->led_status, 0);
2673                 break;
2674         case ETHTOOL_ID_OFF:
2675                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS))
2676                         i40e_led_set(hw, 0x0, false);
2677                 else
2678                         ret = i40e_led_set_phy(hw, false, pf->led_status, 0);
2679                 break;
2680         case ETHTOOL_ID_INACTIVE:
2681                 if (!(pf->hw_features & I40E_HW_PHY_CONTROLS_LEDS)) {
2682                         i40e_led_set(hw, pf->led_status, false);
2683                 } else {
2684                         ret = i40e_led_set_phy(hw, false, pf->led_status,
2685                                                (pf->phy_led_val |
2686                                                I40E_PHY_LED_MODE_ORIG));
2687                         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE))
2688                                 i40e_aq_set_phy_debug(hw, 0, NULL);
2689                 }
2690                 break;
2691         default:
2692                 break;
2693         }
2694         if (ret)
2695                 return -ENOENT;
2696         else
2697                 return 0;
2698 }
2699
2700 /* NOTE: i40e hardware uses a conversion factor of 2 for Interrupt
2701  * Throttle Rate (ITR) ie. ITR(1) = 2us ITR(10) = 20 us, and also
2702  * 125us (8000 interrupts per second) == ITR(62)
2703  */
2704
2705 /**
2706  * __i40e_get_coalesce - get per-queue coalesce settings
2707  * @netdev: the netdev to check
2708  * @ec: ethtool coalesce data structure
2709  * @queue: which queue to pick
2710  *
2711  * Gets the per-queue settings for coalescence. Specifically Rx and Tx usecs
2712  * are per queue. If queue is <0 then we default to queue 0 as the
2713  * representative value.
2714  **/
2715 static int __i40e_get_coalesce(struct net_device *netdev,
2716                                struct ethtool_coalesce *ec,
2717                                int queue)
2718 {
2719         struct i40e_netdev_priv *np = netdev_priv(netdev);
2720         struct i40e_ring *rx_ring, *tx_ring;
2721         struct i40e_vsi *vsi = np->vsi;
2722
2723         ec->tx_max_coalesced_frames_irq = vsi->work_limit;
2724         ec->rx_max_coalesced_frames_irq = vsi->work_limit;
2725
2726         /* rx and tx usecs has per queue value. If user doesn't specify the
2727          * queue, return queue 0's value to represent.
2728          */
2729         if (queue < 0)
2730                 queue = 0;
2731         else if (queue >= vsi->num_queue_pairs)
2732                 return -EINVAL;
2733
2734         rx_ring = vsi->rx_rings[queue];
2735         tx_ring = vsi->tx_rings[queue];
2736
2737         if (ITR_IS_DYNAMIC(rx_ring->itr_setting))
2738                 ec->use_adaptive_rx_coalesce = 1;
2739
2740         if (ITR_IS_DYNAMIC(tx_ring->itr_setting))
2741                 ec->use_adaptive_tx_coalesce = 1;
2742
2743         ec->rx_coalesce_usecs = rx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2744         ec->tx_coalesce_usecs = tx_ring->itr_setting & ~I40E_ITR_DYNAMIC;
2745
2746         /* we use the _usecs_high to store/set the interrupt rate limit
2747          * that the hardware supports, that almost but not quite
2748          * fits the original intent of the ethtool variable,
2749          * the rx_coalesce_usecs_high limits total interrupts
2750          * per second from both tx/rx sources.
2751          */
2752         ec->rx_coalesce_usecs_high = vsi->int_rate_limit;
2753         ec->tx_coalesce_usecs_high = vsi->int_rate_limit;
2754
2755         return 0;
2756 }
2757
2758 /**
2759  * i40e_get_coalesce - get a netdev's coalesce settings
2760  * @netdev: the netdev to check
2761  * @ec: ethtool coalesce data structure
2762  *
2763  * Gets the coalesce settings for a particular netdev. Note that if user has
2764  * modified per-queue settings, this only guarantees to represent queue 0. See
2765  * __i40e_get_coalesce for more details.
2766  **/
2767 static int i40e_get_coalesce(struct net_device *netdev,
2768                              struct ethtool_coalesce *ec)
2769 {
2770         return __i40e_get_coalesce(netdev, ec, -1);
2771 }
2772
2773 /**
2774  * i40e_get_per_queue_coalesce - gets coalesce settings for particular queue
2775  * @netdev: netdev structure
2776  * @ec: ethtool's coalesce settings
2777  * @queue: the particular queue to read
2778  *
2779  * Will read a specific queue's coalesce settings
2780  **/
2781 static int i40e_get_per_queue_coalesce(struct net_device *netdev, u32 queue,
2782                                        struct ethtool_coalesce *ec)
2783 {
2784         return __i40e_get_coalesce(netdev, ec, queue);
2785 }
2786
2787 /**
2788  * i40e_set_itr_per_queue - set ITR values for specific queue
2789  * @vsi: the VSI to set values for
2790  * @ec: coalesce settings from ethtool
2791  * @queue: the queue to modify
2792  *
2793  * Change the ITR settings for a specific queue.
2794  **/
2795 static void i40e_set_itr_per_queue(struct i40e_vsi *vsi,
2796                                    struct ethtool_coalesce *ec,
2797                                    int queue)
2798 {
2799         struct i40e_ring *rx_ring = vsi->rx_rings[queue];
2800         struct i40e_ring *tx_ring = vsi->tx_rings[queue];
2801         struct i40e_pf *pf = vsi->back;
2802         struct i40e_hw *hw = &pf->hw;
2803         struct i40e_q_vector *q_vector;
2804         u16 intrl;
2805
2806         intrl = i40e_intrl_usec_to_reg(vsi->int_rate_limit);
2807
2808         rx_ring->itr_setting = ITR_REG_ALIGN(ec->rx_coalesce_usecs);
2809         tx_ring->itr_setting = ITR_REG_ALIGN(ec->tx_coalesce_usecs);
2810
2811         if (ec->use_adaptive_rx_coalesce)
2812                 rx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2813         else
2814                 rx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2815
2816         if (ec->use_adaptive_tx_coalesce)
2817                 tx_ring->itr_setting |= I40E_ITR_DYNAMIC;
2818         else
2819                 tx_ring->itr_setting &= ~I40E_ITR_DYNAMIC;
2820
2821         q_vector = rx_ring->q_vector;
2822         q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
2823
2824         q_vector = tx_ring->q_vector;
2825         q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
2826
2827         /* The interrupt handler itself will take care of programming
2828          * the Tx and Rx ITR values based on the values we have entered
2829          * into the q_vector, no need to write the values now.
2830          */
2831
2832         wr32(hw, I40E_PFINT_RATEN(q_vector->reg_idx), intrl);
2833         i40e_flush(hw);
2834 }
2835
2836 /**
2837  * __i40e_set_coalesce - set coalesce settings for particular queue
2838  * @netdev: the netdev to change
2839  * @ec: ethtool coalesce settings
2840  * @queue: the queue to change
2841  *
2842  * Sets the coalesce settings for a particular queue.
2843  **/
2844 static int __i40e_set_coalesce(struct net_device *netdev,
2845                                struct ethtool_coalesce *ec,
2846                                int queue)
2847 {
2848         struct i40e_netdev_priv *np = netdev_priv(netdev);
2849         u16 intrl_reg, cur_rx_itr, cur_tx_itr;
2850         struct i40e_vsi *vsi = np->vsi;
2851         struct i40e_pf *pf = vsi->back;
2852         int i;
2853
2854         if (ec->tx_max_coalesced_frames_irq || ec->rx_max_coalesced_frames_irq)
2855                 vsi->work_limit = ec->tx_max_coalesced_frames_irq;
2856
2857         if (queue < 0) {
2858                 cur_rx_itr = vsi->rx_rings[0]->itr_setting;
2859                 cur_tx_itr = vsi->tx_rings[0]->itr_setting;
2860         } else if (queue < vsi->num_queue_pairs) {
2861                 cur_rx_itr = vsi->rx_rings[queue]->itr_setting;
2862                 cur_tx_itr = vsi->tx_rings[queue]->itr_setting;
2863         } else {
2864                 netif_info(pf, drv, netdev, "Invalid queue value, queue range is 0 - %d\n",
2865                            vsi->num_queue_pairs - 1);
2866                 return -EINVAL;
2867         }
2868
2869         cur_tx_itr &= ~I40E_ITR_DYNAMIC;
2870         cur_rx_itr &= ~I40E_ITR_DYNAMIC;
2871
2872         /* tx_coalesce_usecs_high is ignored, use rx-usecs-high instead */
2873         if (ec->tx_coalesce_usecs_high != vsi->int_rate_limit) {
2874                 netif_info(pf, drv, netdev, "tx-usecs-high is not used, please program rx-usecs-high\n");
2875                 return -EINVAL;
2876         }
2877
2878         if (ec->rx_coalesce_usecs_high > INTRL_REG_TO_USEC(I40E_MAX_INTRL)) {
2879                 netif_info(pf, drv, netdev, "Invalid value, rx-usecs-high range is 0-%lu\n",
2880                            INTRL_REG_TO_USEC(I40E_MAX_INTRL));
2881                 return -EINVAL;
2882         }
2883
2884         if (ec->rx_coalesce_usecs != cur_rx_itr &&
2885             ec->use_adaptive_rx_coalesce) {
2886                 netif_info(pf, drv, netdev, "RX interrupt moderation cannot be changed if adaptive-rx is enabled.\n");
2887                 return -EINVAL;
2888         }
2889
2890         if (ec->rx_coalesce_usecs > I40E_MAX_ITR) {
2891                 netif_info(pf, drv, netdev, "Invalid value, rx-usecs range is 0-8160\n");
2892                 return -EINVAL;
2893         }
2894
2895         if (ec->tx_coalesce_usecs != cur_tx_itr &&
2896             ec->use_adaptive_tx_coalesce) {
2897                 netif_info(pf, drv, netdev, "TX interrupt moderation cannot be changed if adaptive-tx is enabled.\n");
2898                 return -EINVAL;
2899         }
2900
2901         if (ec->tx_coalesce_usecs > I40E_MAX_ITR) {
2902                 netif_info(pf, drv, netdev, "Invalid value, tx-usecs range is 0-8160\n");
2903                 return -EINVAL;
2904         }
2905
2906         if (ec->use_adaptive_rx_coalesce && !cur_rx_itr)
2907                 ec->rx_coalesce_usecs = I40E_MIN_ITR;
2908
2909         if (ec->use_adaptive_tx_coalesce && !cur_tx_itr)
2910                 ec->tx_coalesce_usecs = I40E_MIN_ITR;
2911
2912         intrl_reg = i40e_intrl_usec_to_reg(ec->rx_coalesce_usecs_high);
2913         vsi->int_rate_limit = INTRL_REG_TO_USEC(intrl_reg);
2914         if (vsi->int_rate_limit != ec->rx_coalesce_usecs_high) {
2915                 netif_info(pf, drv, netdev, "Interrupt rate limit rounded down to %d\n",
2916                            vsi->int_rate_limit);
2917         }
2918
2919         /* rx and tx usecs has per queue value. If user doesn't specify the
2920          * queue, apply to all queues.
2921          */
2922         if (queue < 0) {
2923                 for (i = 0; i < vsi->num_queue_pairs; i++)
2924                         i40e_set_itr_per_queue(vsi, ec, i);
2925         } else {
2926                 i40e_set_itr_per_queue(vsi, ec, queue);
2927         }
2928
2929         return 0;
2930 }
2931
2932 /**
2933  * i40e_set_coalesce - set coalesce settings for every queue on the netdev
2934  * @netdev: the netdev to change
2935  * @ec: ethtool coalesce settings
2936  *
2937  * This will set each queue to the same coalesce settings.
2938  **/
2939 static int i40e_set_coalesce(struct net_device *netdev,
2940                              struct ethtool_coalesce *ec)
2941 {
2942         return __i40e_set_coalesce(netdev, ec, -1);
2943 }
2944
2945 /**
2946  * i40e_set_per_queue_coalesce - set specific queue's coalesce settings
2947  * @netdev: the netdev to change
2948  * @ec: ethtool's coalesce settings
2949  * @queue: the queue to change
2950  *
2951  * Sets the specified queue's coalesce settings.
2952  **/
2953 static int i40e_set_per_queue_coalesce(struct net_device *netdev, u32 queue,
2954                                        struct ethtool_coalesce *ec)
2955 {
2956         return __i40e_set_coalesce(netdev, ec, queue);
2957 }
2958
2959 /**
2960  * i40e_get_rss_hash_opts - Get RSS hash Input Set for each flow type
2961  * @pf: pointer to the physical function struct
2962  * @cmd: ethtool rxnfc command
2963  *
2964  * Returns Success if the flow is supported, else Invalid Input.
2965  **/
2966 static int i40e_get_rss_hash_opts(struct i40e_pf *pf, struct ethtool_rxnfc *cmd)
2967 {
2968         struct i40e_hw *hw = &pf->hw;
2969         u8 flow_pctype = 0;
2970         u64 i_set = 0;
2971
2972         cmd->data = 0;
2973
2974         switch (cmd->flow_type) {
2975         case TCP_V4_FLOW:
2976                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
2977                 break;
2978         case UDP_V4_FLOW:
2979                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
2980                 break;
2981         case TCP_V6_FLOW:
2982                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
2983                 break;
2984         case UDP_V6_FLOW:
2985                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
2986                 break;
2987         case SCTP_V4_FLOW:
2988         case AH_ESP_V4_FLOW:
2989         case AH_V4_FLOW:
2990         case ESP_V4_FLOW:
2991         case IPV4_FLOW:
2992         case SCTP_V6_FLOW:
2993         case AH_ESP_V6_FLOW:
2994         case AH_V6_FLOW:
2995         case ESP_V6_FLOW:
2996         case IPV6_FLOW:
2997                 /* Default is src/dest for IP, no matter the L4 hashing */
2998                 cmd->data |= RXH_IP_SRC | RXH_IP_DST;
2999                 break;
3000         default:
3001                 return -EINVAL;
3002         }
3003
3004         /* Read flow based hash input set register */
3005         if (flow_pctype) {
3006                 i_set = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3007                                               flow_pctype)) |
3008                         ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3009                                                flow_pctype)) << 32);
3010         }
3011
3012         /* Process bits of hash input set */
3013         if (i_set) {
3014                 if (i_set & I40E_L4_SRC_MASK)
3015                         cmd->data |= RXH_L4_B_0_1;
3016                 if (i_set & I40E_L4_DST_MASK)
3017                         cmd->data |= RXH_L4_B_2_3;
3018
3019                 if (cmd->flow_type == TCP_V4_FLOW ||
3020                     cmd->flow_type == UDP_V4_FLOW) {
3021                         if (i_set & I40E_L3_SRC_MASK)
3022                                 cmd->data |= RXH_IP_SRC;
3023                         if (i_set & I40E_L3_DST_MASK)
3024                                 cmd->data |= RXH_IP_DST;
3025                 } else if (cmd->flow_type == TCP_V6_FLOW ||
3026                           cmd->flow_type == UDP_V6_FLOW) {
3027                         if (i_set & I40E_L3_V6_SRC_MASK)
3028                                 cmd->data |= RXH_IP_SRC;
3029                         if (i_set & I40E_L3_V6_DST_MASK)
3030                                 cmd->data |= RXH_IP_DST;
3031                 }
3032         }
3033
3034         return 0;
3035 }
3036
3037 /**
3038  * i40e_check_mask - Check whether a mask field is set
3039  * @mask: the full mask value
3040  * @field: mask of the field to check
3041  *
3042  * If the given mask is fully set, return positive value. If the mask for the
3043  * field is fully unset, return zero. Otherwise return a negative error code.
3044  **/
3045 static int i40e_check_mask(u64 mask, u64 field)
3046 {
3047         u64 value = mask & field;
3048
3049         if (value == field)
3050                 return 1;
3051         else if (!value)
3052                 return 0;
3053         else
3054                 return -1;
3055 }
3056
3057 /**
3058  * i40e_parse_rx_flow_user_data - Deconstruct user-defined data
3059  * @fsp: pointer to rx flow specification
3060  * @data: pointer to userdef data structure for storage
3061  *
3062  * Read the user-defined data and deconstruct the value into a structure. No
3063  * other code should read the user-defined data, so as to ensure that every
3064  * place consistently reads the value correctly.
3065  *
3066  * The user-defined field is a 64bit Big Endian format value, which we
3067  * deconstruct by reading bits or bit fields from it. Single bit flags shall
3068  * be defined starting from the highest bits, while small bit field values
3069  * shall be defined starting from the lowest bits.
3070  *
3071  * Returns 0 if the data is valid, and non-zero if the userdef data is invalid
3072  * and the filter should be rejected. The data structure will always be
3073  * modified even if FLOW_EXT is not set.
3074  *
3075  **/
3076 static int i40e_parse_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3077                                         struct i40e_rx_flow_userdef *data)
3078 {
3079         u64 value, mask;
3080         int valid;
3081
3082         /* Zero memory first so it's always consistent. */
3083         memset(data, 0, sizeof(*data));
3084
3085         if (!(fsp->flow_type & FLOW_EXT))
3086                 return 0;
3087
3088         value = be64_to_cpu(*((__be64 *)fsp->h_ext.data));
3089         mask = be64_to_cpu(*((__be64 *)fsp->m_ext.data));
3090
3091 #define I40E_USERDEF_FLEX_WORD          GENMASK_ULL(15, 0)
3092 #define I40E_USERDEF_FLEX_OFFSET        GENMASK_ULL(31, 16)
3093 #define I40E_USERDEF_FLEX_FILTER        GENMASK_ULL(31, 0)
3094
3095         valid = i40e_check_mask(mask, I40E_USERDEF_FLEX_FILTER);
3096         if (valid < 0) {
3097                 return -EINVAL;
3098         } else if (valid) {
3099                 data->flex_word = value & I40E_USERDEF_FLEX_WORD;
3100                 data->flex_offset =
3101                         (value & I40E_USERDEF_FLEX_OFFSET) >> 16;
3102                 data->flex_filter = true;
3103         }
3104
3105         return 0;
3106 }
3107
3108 /**
3109  * i40e_fill_rx_flow_user_data - Fill in user-defined data field
3110  * @fsp: pointer to rx_flow specification
3111  * @data: pointer to return userdef data
3112  *
3113  * Reads the userdef data structure and properly fills in the user defined
3114  * fields of the rx_flow_spec.
3115  **/
3116 static void i40e_fill_rx_flow_user_data(struct ethtool_rx_flow_spec *fsp,
3117                                         struct i40e_rx_flow_userdef *data)
3118 {
3119         u64 value = 0, mask = 0;
3120
3121         if (data->flex_filter) {
3122                 value |= data->flex_word;
3123                 value |= (u64)data->flex_offset << 16;
3124                 mask |= I40E_USERDEF_FLEX_FILTER;
3125         }
3126
3127         if (value || mask)
3128                 fsp->flow_type |= FLOW_EXT;
3129
3130         *((__be64 *)fsp->h_ext.data) = cpu_to_be64(value);
3131         *((__be64 *)fsp->m_ext.data) = cpu_to_be64(mask);
3132 }
3133
3134 /**
3135  * i40e_get_ethtool_fdir_all - Populates the rule count of a command
3136  * @pf: Pointer to the physical function struct
3137  * @cmd: The command to get or set Rx flow classification rules
3138  * @rule_locs: Array of used rule locations
3139  *
3140  * This function populates both the total and actual rule count of
3141  * the ethtool flow classification command
3142  *
3143  * Returns 0 on success or -EMSGSIZE if entry not found
3144  **/
3145 static int i40e_get_ethtool_fdir_all(struct i40e_pf *pf,
3146                                      struct ethtool_rxnfc *cmd,
3147                                      u32 *rule_locs)
3148 {
3149         struct i40e_fdir_filter *rule;
3150         struct hlist_node *node2;
3151         int cnt = 0;
3152
3153         /* report total rule count */
3154         cmd->data = i40e_get_fd_cnt_all(pf);
3155
3156         hlist_for_each_entry_safe(rule, node2,
3157                                   &pf->fdir_filter_list, fdir_node) {
3158                 if (cnt == cmd->rule_cnt)
3159                         return -EMSGSIZE;
3160
3161                 rule_locs[cnt] = rule->fd_id;
3162                 cnt++;
3163         }
3164
3165         cmd->rule_cnt = cnt;
3166
3167         return 0;
3168 }
3169
3170 /**
3171  * i40e_get_ethtool_fdir_entry - Look up a filter based on Rx flow
3172  * @pf: Pointer to the physical function struct
3173  * @cmd: The command to get or set Rx flow classification rules
3174  *
3175  * This function looks up a filter based on the Rx flow classification
3176  * command and fills the flow spec info for it if found
3177  *
3178  * Returns 0 on success or -EINVAL if filter not found
3179  **/
3180 static int i40e_get_ethtool_fdir_entry(struct i40e_pf *pf,
3181                                        struct ethtool_rxnfc *cmd)
3182 {
3183         struct ethtool_rx_flow_spec *fsp =
3184                         (struct ethtool_rx_flow_spec *)&cmd->fs;
3185         struct i40e_rx_flow_userdef userdef = {0};
3186         struct i40e_fdir_filter *rule = NULL;
3187         struct hlist_node *node2;
3188         u64 input_set;
3189         u16 index;
3190
3191         hlist_for_each_entry_safe(rule, node2,
3192                                   &pf->fdir_filter_list, fdir_node) {
3193                 if (fsp->location <= rule->fd_id)
3194                         break;
3195         }
3196
3197         if (!rule || fsp->location != rule->fd_id)
3198                 return -EINVAL;
3199
3200         fsp->flow_type = rule->flow_type;
3201         if (fsp->flow_type == IP_USER_FLOW) {
3202                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
3203                 fsp->h_u.usr_ip4_spec.proto = 0;
3204                 fsp->m_u.usr_ip4_spec.proto = 0;
3205         }
3206
3207         /* Reverse the src and dest notion, since the HW views them from
3208          * Tx perspective where as the user expects it from Rx filter view.
3209          */
3210         fsp->h_u.tcp_ip4_spec.psrc = rule->dst_port;
3211         fsp->h_u.tcp_ip4_spec.pdst = rule->src_port;
3212         fsp->h_u.tcp_ip4_spec.ip4src = rule->dst_ip;
3213         fsp->h_u.tcp_ip4_spec.ip4dst = rule->src_ip;
3214
3215         switch (rule->flow_type) {
3216         case SCTP_V4_FLOW:
3217                 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
3218                 break;
3219         case TCP_V4_FLOW:
3220                 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3221                 break;
3222         case UDP_V4_FLOW:
3223                 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3224                 break;
3225         case IP_USER_FLOW:
3226                 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
3227                 break;
3228         default:
3229                 /* If we have stored a filter with a flow type not listed here
3230                  * it is almost certainly a driver bug. WARN(), and then
3231                  * assign the input_set as if all fields are enabled to avoid
3232                  * reading unassigned memory.
3233                  */
3234                 WARN(1, "Missing input set index for flow_type %d\n",
3235                      rule->flow_type);
3236                 input_set = 0xFFFFFFFFFFFFFFFFULL;
3237                 goto no_input_set;
3238         }
3239
3240         input_set = i40e_read_fd_input_set(pf, index);
3241
3242 no_input_set:
3243         if (input_set & I40E_L3_SRC_MASK)
3244                 fsp->m_u.tcp_ip4_spec.ip4src = htonl(0xFFFFFFFF);
3245
3246         if (input_set & I40E_L3_DST_MASK)
3247                 fsp->m_u.tcp_ip4_spec.ip4dst = htonl(0xFFFFFFFF);
3248
3249         if (input_set & I40E_L4_SRC_MASK)
3250                 fsp->m_u.tcp_ip4_spec.psrc = htons(0xFFFF);
3251
3252         if (input_set & I40E_L4_DST_MASK)
3253                 fsp->m_u.tcp_ip4_spec.pdst = htons(0xFFFF);
3254
3255         if (rule->dest_ctl == I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET)
3256                 fsp->ring_cookie = RX_CLS_FLOW_DISC;
3257         else
3258                 fsp->ring_cookie = rule->q_index;
3259
3260         if (rule->dest_vsi != pf->vsi[pf->lan_vsi]->id) {
3261                 struct i40e_vsi *vsi;
3262
3263                 vsi = i40e_find_vsi_from_id(pf, rule->dest_vsi);
3264                 if (vsi && vsi->type == I40E_VSI_SRIOV) {
3265                         /* VFs are zero-indexed by the driver, but ethtool
3266                          * expects them to be one-indexed, so add one here
3267                          */
3268                         u64 ring_vf = vsi->vf_id + 1;
3269
3270                         ring_vf <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF;
3271                         fsp->ring_cookie |= ring_vf;
3272                 }
3273         }
3274
3275         if (rule->flex_filter) {
3276                 userdef.flex_filter = true;
3277                 userdef.flex_word = be16_to_cpu(rule->flex_word);
3278                 userdef.flex_offset = rule->flex_offset;
3279         }
3280
3281         i40e_fill_rx_flow_user_data(fsp, &userdef);
3282
3283         return 0;
3284 }
3285
3286 /**
3287  * i40e_get_rxnfc - command to get RX flow classification rules
3288  * @netdev: network interface device structure
3289  * @cmd: ethtool rxnfc command
3290  * @rule_locs: pointer to store rule data
3291  *
3292  * Returns Success if the command is supported.
3293  **/
3294 static int i40e_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
3295                           u32 *rule_locs)
3296 {
3297         struct i40e_netdev_priv *np = netdev_priv(netdev);
3298         struct i40e_vsi *vsi = np->vsi;
3299         struct i40e_pf *pf = vsi->back;
3300         int ret = -EOPNOTSUPP;
3301
3302         switch (cmd->cmd) {
3303         case ETHTOOL_GRXRINGS:
3304                 cmd->data = vsi->rss_size;
3305                 ret = 0;
3306                 break;
3307         case ETHTOOL_GRXFH:
3308                 ret = i40e_get_rss_hash_opts(pf, cmd);
3309                 break;
3310         case ETHTOOL_GRXCLSRLCNT:
3311                 cmd->rule_cnt = pf->fdir_pf_active_filters;
3312                 /* report total rule count */
3313                 cmd->data = i40e_get_fd_cnt_all(pf);
3314                 ret = 0;
3315                 break;
3316         case ETHTOOL_GRXCLSRULE:
3317                 ret = i40e_get_ethtool_fdir_entry(pf, cmd);
3318                 break;
3319         case ETHTOOL_GRXCLSRLALL:
3320                 ret = i40e_get_ethtool_fdir_all(pf, cmd, rule_locs);
3321                 break;
3322         default:
3323                 break;
3324         }
3325
3326         return ret;
3327 }
3328
3329 /**
3330  * i40e_get_rss_hash_bits - Read RSS Hash bits from register
3331  * @nfc: pointer to user request
3332  * @i_setc: bits currently set
3333  *
3334  * Returns value of bits to be set per user request
3335  **/
3336 static u64 i40e_get_rss_hash_bits(struct ethtool_rxnfc *nfc, u64 i_setc)
3337 {
3338         u64 i_set = i_setc;
3339         u64 src_l3 = 0, dst_l3 = 0;
3340
3341         if (nfc->data & RXH_L4_B_0_1)
3342                 i_set |= I40E_L4_SRC_MASK;
3343         else
3344                 i_set &= ~I40E_L4_SRC_MASK;
3345         if (nfc->data & RXH_L4_B_2_3)
3346                 i_set |= I40E_L4_DST_MASK;
3347         else
3348                 i_set &= ~I40E_L4_DST_MASK;
3349
3350         if (nfc->flow_type == TCP_V6_FLOW || nfc->flow_type == UDP_V6_FLOW) {
3351                 src_l3 = I40E_L3_V6_SRC_MASK;
3352                 dst_l3 = I40E_L3_V6_DST_MASK;
3353         } else if (nfc->flow_type == TCP_V4_FLOW ||
3354                   nfc->flow_type == UDP_V4_FLOW) {
3355                 src_l3 = I40E_L3_SRC_MASK;
3356                 dst_l3 = I40E_L3_DST_MASK;
3357         } else {
3358                 /* Any other flow type are not supported here */
3359                 return i_set;
3360         }
3361
3362         if (nfc->data & RXH_IP_SRC)
3363                 i_set |= src_l3;
3364         else
3365                 i_set &= ~src_l3;
3366         if (nfc->data & RXH_IP_DST)
3367                 i_set |= dst_l3;
3368         else
3369                 i_set &= ~dst_l3;
3370
3371         return i_set;
3372 }
3373
3374 /**
3375  * i40e_set_rss_hash_opt - Enable/Disable flow types for RSS hash
3376  * @pf: pointer to the physical function struct
3377  * @nfc: ethtool rxnfc command
3378  *
3379  * Returns Success if the flow input set is supported.
3380  **/
3381 static int i40e_set_rss_hash_opt(struct i40e_pf *pf, struct ethtool_rxnfc *nfc)
3382 {
3383         struct i40e_hw *hw = &pf->hw;
3384         u64 hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
3385                    ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
3386         u8 flow_pctype = 0;
3387         u64 i_set, i_setc;
3388
3389         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3390                 dev_err(&pf->pdev->dev,
3391                         "Change of RSS hash input set is not supported when MFP mode is enabled\n");
3392                 return -EOPNOTSUPP;
3393         }
3394
3395         /* RSS does not support anything other than hashing
3396          * to queues on src and dst IPs and ports
3397          */
3398         if (nfc->data & ~(RXH_IP_SRC | RXH_IP_DST |
3399                           RXH_L4_B_0_1 | RXH_L4_B_2_3))
3400                 return -EINVAL;
3401
3402         switch (nfc->flow_type) {
3403         case TCP_V4_FLOW:
3404                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
3405                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3406                         hena |=
3407                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3408                 break;
3409         case TCP_V6_FLOW:
3410                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_TCP;
3411                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3412                         hena |=
3413                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK);
3414                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3415                         hena |=
3416                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK);
3417                 break;
3418         case UDP_V4_FLOW:
3419                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
3420                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3421                         hena |=
3422                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) |
3423                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP);
3424
3425                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3426                 break;
3427         case UDP_V6_FLOW:
3428                 flow_pctype = I40E_FILTER_PCTYPE_NONF_IPV6_UDP;
3429                 if (pf->hw_features & I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE)
3430                         hena |=
3431                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) |
3432                           BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP);
3433
3434                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3435                 break;
3436         case AH_ESP_V4_FLOW:
3437         case AH_V4_FLOW:
3438         case ESP_V4_FLOW:
3439         case SCTP_V4_FLOW:
3440                 if ((nfc->data & RXH_L4_B_0_1) ||
3441                     (nfc->data & RXH_L4_B_2_3))
3442                         return -EINVAL;
3443                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER);
3444                 break;
3445         case AH_ESP_V6_FLOW:
3446         case AH_V6_FLOW:
3447         case ESP_V6_FLOW:
3448         case SCTP_V6_FLOW:
3449                 if ((nfc->data & RXH_L4_B_0_1) ||
3450                     (nfc->data & RXH_L4_B_2_3))
3451                         return -EINVAL;
3452                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER);
3453                 break;
3454         case IPV4_FLOW:
3455                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) |
3456                         BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4);
3457                 break;
3458         case IPV6_FLOW:
3459                 hena |= BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) |
3460                         BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6);
3461                 break;
3462         default:
3463                 return -EINVAL;
3464         }
3465
3466         if (flow_pctype) {
3467                 i_setc = (u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(0,
3468                                                flow_pctype)) |
3469                         ((u64)i40e_read_rx_ctl(hw, I40E_GLQF_HASH_INSET(1,
3470                                                flow_pctype)) << 32);
3471                 i_set = i40e_get_rss_hash_bits(nfc, i_setc);
3472                 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(0, flow_pctype),
3473                                   (u32)i_set);
3474                 i40e_write_rx_ctl(hw, I40E_GLQF_HASH_INSET(1, flow_pctype),
3475                                   (u32)(i_set >> 32));
3476                 hena |= BIT_ULL(flow_pctype);
3477         }
3478
3479         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
3480         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
3481         i40e_flush(hw);
3482
3483         return 0;
3484 }
3485
3486 /**
3487  * i40e_update_ethtool_fdir_entry - Updates the fdir filter entry
3488  * @vsi: Pointer to the targeted VSI
3489  * @input: The filter to update or NULL to indicate deletion
3490  * @sw_idx: Software index to the filter
3491  * @cmd: The command to get or set Rx flow classification rules
3492  *
3493  * This function updates (or deletes) a Flow Director entry from
3494  * the hlist of the corresponding PF
3495  *
3496  * Returns 0 on success
3497  **/
3498 static int i40e_update_ethtool_fdir_entry(struct i40e_vsi *vsi,
3499                                           struct i40e_fdir_filter *input,
3500                                           u16 sw_idx,
3501                                           struct ethtool_rxnfc *cmd)
3502 {
3503         struct i40e_fdir_filter *rule, *parent;
3504         struct i40e_pf *pf = vsi->back;
3505         struct hlist_node *node2;
3506         int err = -EINVAL;
3507
3508         parent = NULL;
3509         rule = NULL;
3510
3511         hlist_for_each_entry_safe(rule, node2,
3512                                   &pf->fdir_filter_list, fdir_node) {
3513                 /* hash found, or no matching entry */
3514                 if (rule->fd_id >= sw_idx)
3515                         break;
3516                 parent = rule;
3517         }
3518
3519         /* if there is an old rule occupying our place remove it */
3520         if (rule && (rule->fd_id == sw_idx)) {
3521                 /* Remove this rule, since we're either deleting it, or
3522                  * replacing it.
3523                  */
3524                 err = i40e_add_del_fdir(vsi, rule, false);
3525                 hlist_del(&rule->fdir_node);
3526                 kfree(rule);
3527                 pf->fdir_pf_active_filters--;
3528         }
3529
3530         /* If we weren't given an input, this is a delete, so just return the
3531          * error code indicating if there was an entry at the requested slot
3532          */
3533         if (!input)
3534                 return err;
3535
3536         /* Otherwise, install the new rule as requested */
3537         INIT_HLIST_NODE(&input->fdir_node);
3538
3539         /* add filter to the list */
3540         if (parent)
3541                 hlist_add_behind(&input->fdir_node, &parent->fdir_node);
3542         else
3543                 hlist_add_head(&input->fdir_node,
3544                                &pf->fdir_filter_list);
3545
3546         /* update counts */
3547         pf->fdir_pf_active_filters++;
3548
3549         return 0;
3550 }
3551
3552 /**
3553  * i40e_prune_flex_pit_list - Cleanup unused entries in FLX_PIT table
3554  * @pf: pointer to PF structure
3555  *
3556  * This function searches the list of filters and determines which FLX_PIT
3557  * entries are still required. It will prune any entries which are no longer
3558  * in use after the deletion.
3559  **/
3560 static void i40e_prune_flex_pit_list(struct i40e_pf *pf)
3561 {
3562         struct i40e_flex_pit *entry, *tmp;
3563         struct i40e_fdir_filter *rule;
3564
3565         /* First, we'll check the l3 table */
3566         list_for_each_entry_safe(entry, tmp, &pf->l3_flex_pit_list, list) {
3567                 bool found = false;
3568
3569                 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3570                         if (rule->flow_type != IP_USER_FLOW)
3571                                 continue;
3572                         if (rule->flex_filter &&
3573                             rule->flex_offset == entry->src_offset) {
3574                                 found = true;
3575                                 break;
3576                         }
3577                 }
3578
3579                 /* If we didn't find the filter, then we can prune this entry
3580                  * from the list.
3581                  */
3582                 if (!found) {
3583                         list_del(&entry->list);
3584                         kfree(entry);
3585                 }
3586         }
3587
3588         /* Followed by the L4 table */
3589         list_for_each_entry_safe(entry, tmp, &pf->l4_flex_pit_list, list) {
3590                 bool found = false;
3591
3592                 hlist_for_each_entry(rule, &pf->fdir_filter_list, fdir_node) {
3593                         /* Skip this filter if it's L3, since we already
3594                          * checked those in the above loop
3595                          */
3596                         if (rule->flow_type == IP_USER_FLOW)
3597                                 continue;
3598                         if (rule->flex_filter &&
3599                             rule->flex_offset == entry->src_offset) {
3600                                 found = true;
3601                                 break;
3602                         }
3603                 }
3604
3605                 /* If we didn't find the filter, then we can prune this entry
3606                  * from the list.
3607                  */
3608                 if (!found) {
3609                         list_del(&entry->list);
3610                         kfree(entry);
3611                 }
3612         }
3613 }
3614
3615 /**
3616  * i40e_del_fdir_entry - Deletes a Flow Director filter entry
3617  * @vsi: Pointer to the targeted VSI
3618  * @cmd: The command to get or set Rx flow classification rules
3619  *
3620  * The function removes a Flow Director filter entry from the
3621  * hlist of the corresponding PF
3622  *
3623  * Returns 0 on success
3624  */
3625 static int i40e_del_fdir_entry(struct i40e_vsi *vsi,
3626                                struct ethtool_rxnfc *cmd)
3627 {
3628         struct ethtool_rx_flow_spec *fsp =
3629                 (struct ethtool_rx_flow_spec *)&cmd->fs;
3630         struct i40e_pf *pf = vsi->back;
3631         int ret = 0;
3632
3633         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
3634             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
3635                 return -EBUSY;
3636
3637         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
3638                 return -EBUSY;
3639
3640         ret = i40e_update_ethtool_fdir_entry(vsi, NULL, fsp->location, cmd);
3641
3642         i40e_prune_flex_pit_list(pf);
3643
3644         i40e_fdir_check_and_reenable(pf);
3645         return ret;
3646 }
3647
3648 /**
3649  * i40e_unused_pit_index - Find an unused PIT index for given list
3650  * @pf: the PF data structure
3651  *
3652  * Find the first unused flexible PIT index entry. We search both the L3 and
3653  * L4 flexible PIT lists so that the returned index is unique and unused by
3654  * either currently programmed L3 or L4 filters. We use a bit field as storage
3655  * to track which indexes are already used.
3656  **/
3657 static u8 i40e_unused_pit_index(struct i40e_pf *pf)
3658 {
3659         unsigned long available_index = 0xFF;
3660         struct i40e_flex_pit *entry;
3661
3662         /* We need to make sure that the new index isn't in use by either L3
3663          * or L4 filters so that IP_USER_FLOW filters can program both L3 and
3664          * L4 to use the same index.
3665          */
3666
3667         list_for_each_entry(entry, &pf->l4_flex_pit_list, list)
3668                 clear_bit(entry->pit_index, &available_index);
3669
3670         list_for_each_entry(entry, &pf->l3_flex_pit_list, list)
3671                 clear_bit(entry->pit_index, &available_index);
3672
3673         return find_first_bit(&available_index, 8);
3674 }
3675
3676 /**
3677  * i40e_find_flex_offset - Find an existing flex src_offset
3678  * @flex_pit_list: L3 or L4 flex PIT list
3679  * @src_offset: new src_offset to find
3680  *
3681  * Searches the flex_pit_list for an existing offset. If no offset is
3682  * currently programmed, then this will return an ERR_PTR if there is no space
3683  * to add a new offset, otherwise it returns NULL.
3684  **/
3685 static
3686 struct i40e_flex_pit *i40e_find_flex_offset(struct list_head *flex_pit_list,
3687                                             u16 src_offset)
3688 {
3689         struct i40e_flex_pit *entry;
3690         int size = 0;
3691
3692         /* Search for the src_offset first. If we find a matching entry
3693          * already programmed, we can simply re-use it.
3694          */
3695         list_for_each_entry(entry, flex_pit_list, list) {
3696                 size++;
3697                 if (entry->src_offset == src_offset)
3698                         return entry;
3699         }
3700
3701         /* If we haven't found an entry yet, then the provided src offset has
3702          * not yet been programmed. We will program the src offset later on,
3703          * but we need to indicate whether there is enough space to do so
3704          * here. We'll make use of ERR_PTR for this purpose.
3705          */
3706         if (size >= I40E_FLEX_PIT_TABLE_SIZE)
3707                 return ERR_PTR(-ENOSPC);
3708
3709         return NULL;
3710 }
3711
3712 /**
3713  * i40e_add_flex_offset - Add src_offset to flex PIT table list
3714  * @flex_pit_list: L3 or L4 flex PIT list
3715  * @src_offset: new src_offset to add
3716  * @pit_index: the PIT index to program
3717  *
3718  * This function programs the new src_offset to the list. It is expected that
3719  * i40e_find_flex_offset has already been tried and returned NULL, indicating
3720  * that this offset is not programmed, and that the list has enough space to
3721  * store another offset.
3722  *
3723  * Returns 0 on success, and negative value on error.
3724  **/
3725 static int i40e_add_flex_offset(struct list_head *flex_pit_list,
3726                                 u16 src_offset,
3727                                 u8 pit_index)
3728 {
3729         struct i40e_flex_pit *new_pit, *entry;
3730
3731         new_pit = kzalloc(sizeof(*entry), GFP_KERNEL);
3732         if (!new_pit)
3733                 return -ENOMEM;
3734
3735         new_pit->src_offset = src_offset;
3736         new_pit->pit_index = pit_index;
3737
3738         /* We need to insert this item such that the list is sorted by
3739          * src_offset in ascending order.
3740          */
3741         list_for_each_entry(entry, flex_pit_list, list) {
3742                 if (new_pit->src_offset < entry->src_offset) {
3743                         list_add_tail(&new_pit->list, &entry->list);
3744                         return 0;
3745                 }
3746
3747                 /* If we found an entry with our offset already programmed we
3748                  * can simply return here, after freeing the memory. However,
3749                  * if the pit_index does not match we need to report an error.
3750                  */
3751                 if (new_pit->src_offset == entry->src_offset) {
3752                         int err = 0;
3753
3754                         /* If the PIT index is not the same we can't re-use
3755                          * the entry, so we must report an error.
3756                          */
3757                         if (new_pit->pit_index != entry->pit_index)
3758                                 err = -EINVAL;
3759
3760                         kfree(new_pit);
3761                         return err;
3762                 }
3763         }
3764
3765         /* If we reached here, then we haven't yet added the item. This means
3766          * that we should add the item at the end of the list.
3767          */
3768         list_add_tail(&new_pit->list, flex_pit_list);
3769         return 0;
3770 }
3771
3772 /**
3773  * __i40e_reprogram_flex_pit - Re-program specific FLX_PIT table
3774  * @pf: Pointer to the PF structure
3775  * @flex_pit_list: list of flexible src offsets in use
3776  * @flex_pit_start: index to first entry for this section of the table
3777  *
3778  * In order to handle flexible data, the hardware uses a table of values
3779  * called the FLX_PIT table. This table is used to indicate which sections of
3780  * the input correspond to what PIT index values. Unfortunately, hardware is
3781  * very restrictive about programming this table. Entries must be ordered by
3782  * src_offset in ascending order, without duplicates. Additionally, unused
3783  * entries must be set to the unused index value, and must have valid size and
3784  * length according to the src_offset ordering.
3785  *
3786  * This function will reprogram the FLX_PIT register from a book-keeping
3787  * structure that we guarantee is already ordered correctly, and has no more
3788  * than 3 entries.
3789  *
3790  * To make things easier, we only support flexible values of one word length,
3791  * rather than allowing variable length flexible values.
3792  **/
3793 static void __i40e_reprogram_flex_pit(struct i40e_pf *pf,
3794                                       struct list_head *flex_pit_list,
3795                                       int flex_pit_start)
3796 {
3797         struct i40e_flex_pit *entry = NULL;
3798         u16 last_offset = 0;
3799         int i = 0, j = 0;
3800
3801         /* First, loop over the list of flex PIT entries, and reprogram the
3802          * registers.
3803          */
3804         list_for_each_entry(entry, flex_pit_list, list) {
3805                 /* We have to be careful when programming values for the
3806                  * largest SRC_OFFSET value. It is possible that adding
3807                  * additional empty values at the end would overflow the space
3808                  * for the SRC_OFFSET in the FLX_PIT register. To avoid this,
3809                  * we check here and add the empty values prior to adding the
3810                  * largest value.
3811                  *
3812                  * To determine this, we will use a loop from i+1 to 3, which
3813                  * will determine whether the unused entries would have valid
3814                  * SRC_OFFSET. Note that there cannot be extra entries past
3815                  * this value, because the only valid values would have been
3816                  * larger than I40E_MAX_FLEX_SRC_OFFSET, and thus would not
3817                  * have been added to the list in the first place.
3818                  */
3819                 for (j = i + 1; j < 3; j++) {
3820                         u16 offset = entry->src_offset + j;
3821                         int index = flex_pit_start + i;
3822                         u32 value = I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3823                                                        1,
3824                                                        offset - 3);
3825
3826                         if (offset > I40E_MAX_FLEX_SRC_OFFSET) {
3827                                 i40e_write_rx_ctl(&pf->hw,
3828                                                   I40E_PRTQF_FLX_PIT(index),
3829                                                   value);
3830                                 i++;
3831                         }
3832                 }
3833
3834                 /* Now, we can program the actual value into the table */
3835                 i40e_write_rx_ctl(&pf->hw,
3836                                   I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3837                                   I40E_FLEX_PREP_VAL(entry->pit_index + 50,
3838                                                      1,
3839                                                      entry->src_offset));
3840                 i++;
3841         }
3842
3843         /* In order to program the last entries in the table, we need to
3844          * determine the valid offset. If the list is empty, we'll just start
3845          * with 0. Otherwise, we'll start with the last item offset and add 1.
3846          * This ensures that all entries have valid sizes. If we don't do this
3847          * correctly, the hardware will disable flexible field parsing.
3848          */
3849         if (!list_empty(flex_pit_list))
3850                 last_offset = list_prev_entry(entry, list)->src_offset + 1;
3851
3852         for (; i < 3; i++, last_offset++) {
3853                 i40e_write_rx_ctl(&pf->hw,
3854                                   I40E_PRTQF_FLX_PIT(flex_pit_start + i),
3855                                   I40E_FLEX_PREP_VAL(I40E_FLEX_DEST_UNUSED,
3856                                                      1,
3857                                                      last_offset));
3858         }
3859 }
3860
3861 /**
3862  * i40e_reprogram_flex_pit - Reprogram all FLX_PIT tables after input set change
3863  * @pf: pointer to the PF structure
3864  *
3865  * This function reprograms both the L3 and L4 FLX_PIT tables. See the
3866  * internal helper function for implementation details.
3867  **/
3868 static void i40e_reprogram_flex_pit(struct i40e_pf *pf)
3869 {
3870         __i40e_reprogram_flex_pit(pf, &pf->l3_flex_pit_list,
3871                                   I40E_FLEX_PIT_IDX_START_L3);
3872
3873         __i40e_reprogram_flex_pit(pf, &pf->l4_flex_pit_list,
3874                                   I40E_FLEX_PIT_IDX_START_L4);
3875
3876         /* We also need to program the L3 and L4 GLQF ORT register */
3877         i40e_write_rx_ctl(&pf->hw,
3878                           I40E_GLQF_ORT(I40E_L3_GLQF_ORT_IDX),
3879                           I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L3,
3880                                             3, 1));
3881
3882         i40e_write_rx_ctl(&pf->hw,
3883                           I40E_GLQF_ORT(I40E_L4_GLQF_ORT_IDX),
3884                           I40E_ORT_PREP_VAL(I40E_FLEX_PIT_IDX_START_L4,
3885                                             3, 1));
3886 }
3887
3888 /**
3889  * i40e_flow_str - Converts a flow_type into a human readable string
3890  * @fsp: the flow specification
3891  *
3892  * Currently only flow types we support are included here, and the string
3893  * value attempts to match what ethtool would use to configure this flow type.
3894  **/
3895 static const char *i40e_flow_str(struct ethtool_rx_flow_spec *fsp)
3896 {
3897         switch (fsp->flow_type & ~FLOW_EXT) {
3898         case TCP_V4_FLOW:
3899                 return "tcp4";
3900         case UDP_V4_FLOW:
3901                 return "udp4";
3902         case SCTP_V4_FLOW:
3903                 return "sctp4";
3904         case IP_USER_FLOW:
3905                 return "ip4";
3906         default:
3907                 return "unknown";
3908         }
3909 }
3910
3911 /**
3912  * i40e_pit_index_to_mask - Return the FLEX mask for a given PIT index
3913  * @pit_index: PIT index to convert
3914  *
3915  * Returns the mask for a given PIT index. Will return 0 if the pit_index is
3916  * of range.
3917  **/
3918 static u64 i40e_pit_index_to_mask(int pit_index)
3919 {
3920         switch (pit_index) {
3921         case 0:
3922                 return I40E_FLEX_50_MASK;
3923         case 1:
3924                 return I40E_FLEX_51_MASK;
3925         case 2:
3926                 return I40E_FLEX_52_MASK;
3927         case 3:
3928                 return I40E_FLEX_53_MASK;
3929         case 4:
3930                 return I40E_FLEX_54_MASK;
3931         case 5:
3932                 return I40E_FLEX_55_MASK;
3933         case 6:
3934                 return I40E_FLEX_56_MASK;
3935         case 7:
3936                 return I40E_FLEX_57_MASK;
3937         default:
3938                 return 0;
3939         }
3940 }
3941
3942 /**
3943  * i40e_print_input_set - Show changes between two input sets
3944  * @vsi: the vsi being configured
3945  * @old: the old input set
3946  * @new: the new input set
3947  *
3948  * Print the difference between old and new input sets by showing which series
3949  * of words are toggled on or off. Only displays the bits we actually support
3950  * changing.
3951  **/
3952 static void i40e_print_input_set(struct i40e_vsi *vsi, u64 old, u64 new)
3953 {
3954         struct i40e_pf *pf = vsi->back;
3955         bool old_value, new_value;
3956         int i;
3957
3958         old_value = !!(old & I40E_L3_SRC_MASK);
3959         new_value = !!(new & I40E_L3_SRC_MASK);
3960         if (old_value != new_value)
3961                 netif_info(pf, drv, vsi->netdev, "L3 source address: %s -> %s\n",
3962                            old_value ? "ON" : "OFF",
3963                            new_value ? "ON" : "OFF");
3964
3965         old_value = !!(old & I40E_L3_DST_MASK);
3966         new_value = !!(new & I40E_L3_DST_MASK);
3967         if (old_value != new_value)
3968                 netif_info(pf, drv, vsi->netdev, "L3 destination address: %s -> %s\n",
3969                            old_value ? "ON" : "OFF",
3970                            new_value ? "ON" : "OFF");
3971
3972         old_value = !!(old & I40E_L4_SRC_MASK);
3973         new_value = !!(new & I40E_L4_SRC_MASK);
3974         if (old_value != new_value)
3975                 netif_info(pf, drv, vsi->netdev, "L4 source port: %s -> %s\n",
3976                            old_value ? "ON" : "OFF",
3977                            new_value ? "ON" : "OFF");
3978
3979         old_value = !!(old & I40E_L4_DST_MASK);
3980         new_value = !!(new & I40E_L4_DST_MASK);
3981         if (old_value != new_value)
3982                 netif_info(pf, drv, vsi->netdev, "L4 destination port: %s -> %s\n",
3983                            old_value ? "ON" : "OFF",
3984                            new_value ? "ON" : "OFF");
3985
3986         old_value = !!(old & I40E_VERIFY_TAG_MASK);
3987         new_value = !!(new & I40E_VERIFY_TAG_MASK);
3988         if (old_value != new_value)
3989                 netif_info(pf, drv, vsi->netdev, "SCTP verification tag: %s -> %s\n",
3990                            old_value ? "ON" : "OFF",
3991                            new_value ? "ON" : "OFF");
3992
3993         /* Show change of flexible filter entries */
3994         for (i = 0; i < I40E_FLEX_INDEX_ENTRIES; i++) {
3995                 u64 flex_mask = i40e_pit_index_to_mask(i);
3996
3997                 old_value = !!(old & flex_mask);
3998                 new_value = !!(new & flex_mask);
3999                 if (old_value != new_value)
4000                         netif_info(pf, drv, vsi->netdev, "FLEX index %d: %s -> %s\n",
4001                                    i,
4002                                    old_value ? "ON" : "OFF",
4003                                    new_value ? "ON" : "OFF");
4004         }
4005
4006         netif_info(pf, drv, vsi->netdev, "  Current input set: %0llx\n",
4007                    old);
4008         netif_info(pf, drv, vsi->netdev, "Requested input set: %0llx\n",
4009                    new);
4010 }
4011
4012 /**
4013  * i40e_check_fdir_input_set - Check that a given rx_flow_spec mask is valid
4014  * @vsi: pointer to the targeted VSI
4015  * @fsp: pointer to Rx flow specification
4016  * @userdef: userdefined data from flow specification
4017  *
4018  * Ensures that a given ethtool_rx_flow_spec has a valid mask. Some support
4019  * for partial matches exists with a few limitations. First, hardware only
4020  * supports masking by word boundary (2 bytes) and not per individual bit.
4021  * Second, hardware is limited to using one mask for a flow type and cannot
4022  * use a separate mask for each filter.
4023  *
4024  * To support these limitations, if we already have a configured filter for
4025  * the specified type, this function enforces that new filters of the type
4026  * match the configured input set. Otherwise, if we do not have a filter of
4027  * the specified type, we allow the input set to be updated to match the
4028  * desired filter.
4029  *
4030  * To help ensure that administrators understand why filters weren't displayed
4031  * as supported, we print a diagnostic message displaying how the input set
4032  * would change and warning to delete the preexisting filters if required.
4033  *
4034  * Returns 0 on successful input set match, and a negative return code on
4035  * failure.
4036  **/
4037 static int i40e_check_fdir_input_set(struct i40e_vsi *vsi,
4038                                      struct ethtool_rx_flow_spec *fsp,
4039                                      struct i40e_rx_flow_userdef *userdef)
4040 {
4041         struct i40e_pf *pf = vsi->back;
4042         struct ethtool_tcpip4_spec *tcp_ip4_spec;
4043         struct ethtool_usrip4_spec *usr_ip4_spec;
4044         u64 current_mask, new_mask;
4045         bool new_flex_offset = false;
4046         bool flex_l3 = false;
4047         u16 *fdir_filter_count;
4048         u16 index, src_offset = 0;
4049         u8 pit_index = 0;
4050         int err;
4051
4052         switch (fsp->flow_type & ~FLOW_EXT) {
4053         case SCTP_V4_FLOW:
4054                 index = I40E_FILTER_PCTYPE_NONF_IPV4_SCTP;
4055                 fdir_filter_count = &pf->fd_sctp4_filter_cnt;
4056                 break;
4057         case TCP_V4_FLOW:
4058                 index = I40E_FILTER_PCTYPE_NONF_IPV4_TCP;
4059                 fdir_filter_count = &pf->fd_tcp4_filter_cnt;
4060                 break;
4061         case UDP_V4_FLOW:
4062                 index = I40E_FILTER_PCTYPE_NONF_IPV4_UDP;
4063                 fdir_filter_count = &pf->fd_udp4_filter_cnt;
4064                 break;
4065         case IP_USER_FLOW:
4066                 index = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER;
4067                 fdir_filter_count = &pf->fd_ip4_filter_cnt;
4068                 flex_l3 = true;
4069                 break;
4070         default:
4071                 return -EOPNOTSUPP;
4072         }
4073
4074         /* Read the current input set from register memory. */
4075         current_mask = i40e_read_fd_input_set(pf, index);
4076         new_mask = current_mask;
4077
4078         /* Determine, if any, the required changes to the input set in order
4079          * to support the provided mask.
4080          *
4081          * Hardware only supports masking at word (2 byte) granularity and does
4082          * not support full bitwise masking. This implementation simplifies
4083          * even further and only supports fully enabled or fully disabled
4084          * masks for each field, even though we could split the ip4src and
4085          * ip4dst fields.
4086          */
4087         switch (fsp->flow_type & ~FLOW_EXT) {
4088         case SCTP_V4_FLOW:
4089                 new_mask &= ~I40E_VERIFY_TAG_MASK;
4090                 /* Fall through */
4091         case TCP_V4_FLOW:
4092         case UDP_V4_FLOW:
4093                 tcp_ip4_spec = &fsp->m_u.tcp_ip4_spec;
4094
4095                 /* IPv4 source address */
4096                 if (tcp_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4097                         new_mask |= I40E_L3_SRC_MASK;
4098                 else if (!tcp_ip4_spec->ip4src)
4099                         new_mask &= ~I40E_L3_SRC_MASK;
4100                 else
4101                         return -EOPNOTSUPP;
4102
4103                 /* IPv4 destination address */
4104                 if (tcp_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4105                         new_mask |= I40E_L3_DST_MASK;
4106                 else if (!tcp_ip4_spec->ip4dst)
4107                         new_mask &= ~I40E_L3_DST_MASK;
4108                 else
4109                         return -EOPNOTSUPP;
4110
4111                 /* L4 source port */
4112                 if (tcp_ip4_spec->psrc == htons(0xFFFF))
4113                         new_mask |= I40E_L4_SRC_MASK;
4114                 else if (!tcp_ip4_spec->psrc)
4115                         new_mask &= ~I40E_L4_SRC_MASK;
4116                 else
4117                         return -EOPNOTSUPP;
4118
4119                 /* L4 destination port */
4120                 if (tcp_ip4_spec->pdst == htons(0xFFFF))
4121                         new_mask |= I40E_L4_DST_MASK;
4122                 else if (!tcp_ip4_spec->pdst)
4123                         new_mask &= ~I40E_L4_DST_MASK;
4124                 else
4125                         return -EOPNOTSUPP;
4126
4127                 /* Filtering on Type of Service is not supported. */
4128                 if (tcp_ip4_spec->tos)
4129                         return -EOPNOTSUPP;
4130
4131                 break;
4132         case IP_USER_FLOW:
4133                 usr_ip4_spec = &fsp->m_u.usr_ip4_spec;
4134
4135                 /* IPv4 source address */
4136                 if (usr_ip4_spec->ip4src == htonl(0xFFFFFFFF))
4137                         new_mask |= I40E_L3_SRC_MASK;
4138                 else if (!usr_ip4_spec->ip4src)
4139                         new_mask &= ~I40E_L3_SRC_MASK;
4140                 else
4141                         return -EOPNOTSUPP;
4142
4143                 /* IPv4 destination address */
4144                 if (usr_ip4_spec->ip4dst == htonl(0xFFFFFFFF))
4145                         new_mask |= I40E_L3_DST_MASK;
4146                 else if (!usr_ip4_spec->ip4dst)
4147                         new_mask &= ~I40E_L3_DST_MASK;
4148                 else
4149                         return -EOPNOTSUPP;
4150
4151                 /* First 4 bytes of L4 header */
4152                 if (usr_ip4_spec->l4_4_bytes == htonl(0xFFFFFFFF))
4153                         new_mask |= I40E_L4_SRC_MASK | I40E_L4_DST_MASK;
4154                 else if (!usr_ip4_spec->l4_4_bytes)
4155                         new_mask &= ~(I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
4156                 else
4157                         return -EOPNOTSUPP;
4158
4159                 /* Filtering on Type of Service is not supported. */
4160                 if (usr_ip4_spec->tos)
4161                         return -EOPNOTSUPP;
4162
4163                 /* Filtering on IP version is not supported */
4164                 if (usr_ip4_spec->ip_ver)
4165                         return -EINVAL;
4166
4167                 /* Filtering on L4 protocol is not supported */
4168                 if (usr_ip4_spec->proto)
4169                         return -EINVAL;
4170
4171                 break;
4172         default:
4173                 return -EOPNOTSUPP;
4174         }
4175
4176         /* First, clear all flexible filter entries */
4177         new_mask &= ~I40E_FLEX_INPUT_MASK;
4178
4179         /* If we have a flexible filter, try to add this offset to the correct
4180          * flexible filter PIT list. Once finished, we can update the mask.
4181          * If the src_offset changed, we will get a new mask value which will
4182          * trigger an input set change.
4183          */
4184         if (userdef->flex_filter) {
4185                 struct i40e_flex_pit *l3_flex_pit = NULL, *flex_pit = NULL;
4186
4187                 /* Flexible offset must be even, since the flexible payload
4188                  * must be aligned on 2-byte boundary.
4189                  */
4190                 if (userdef->flex_offset & 0x1) {
4191                         dev_warn(&pf->pdev->dev,
4192                                  "Flexible data offset must be 2-byte aligned\n");
4193                         return -EINVAL;
4194                 }
4195
4196                 src_offset = userdef->flex_offset >> 1;
4197
4198                 /* FLX_PIT source offset value is only so large */
4199                 if (src_offset > I40E_MAX_FLEX_SRC_OFFSET) {
4200                         dev_warn(&pf->pdev->dev,
4201                                  "Flexible data must reside within first 64 bytes of the packet payload\n");
4202                         return -EINVAL;
4203                 }
4204
4205                 /* See if this offset has already been programmed. If we get
4206                  * an ERR_PTR, then the filter is not safe to add. Otherwise,
4207                  * if we get a NULL pointer, this means we will need to add
4208                  * the offset.
4209                  */
4210                 flex_pit = i40e_find_flex_offset(&pf->l4_flex_pit_list,
4211                                                  src_offset);
4212                 if (IS_ERR(flex_pit))
4213                         return PTR_ERR(flex_pit);
4214
4215                 /* IP_USER_FLOW filters match both L4 (ICMP) and L3 (unknown)
4216                  * packet types, and thus we need to program both L3 and L4
4217                  * flexible values. These must have identical flexible index,
4218                  * as otherwise we can't correctly program the input set. So
4219                  * we'll find both an L3 and L4 index and make sure they are
4220                  * the same.
4221                  */
4222                 if (flex_l3) {
4223                         l3_flex_pit =
4224                                 i40e_find_flex_offset(&pf->l3_flex_pit_list,
4225                                                       src_offset);
4226                         if (IS_ERR(l3_flex_pit))
4227                                 return PTR_ERR(l3_flex_pit);
4228
4229                         if (flex_pit) {
4230                                 /* If we already had a matching L4 entry, we
4231                                  * need to make sure that the L3 entry we
4232                                  * obtained uses the same index.
4233                                  */
4234                                 if (l3_flex_pit) {
4235                                         if (l3_flex_pit->pit_index !=
4236                                             flex_pit->pit_index) {
4237                                                 return -EINVAL;
4238                                         }
4239                                 } else {
4240                                         new_flex_offset = true;
4241                                 }
4242                         } else {
4243                                 flex_pit = l3_flex_pit;
4244                         }
4245                 }
4246
4247                 /* If we didn't find an existing flex offset, we need to
4248                  * program a new one. However, we don't immediately program it
4249                  * here because we will wait to program until after we check
4250                  * that it is safe to change the input set.
4251                  */
4252                 if (!flex_pit) {
4253                         new_flex_offset = true;
4254                         pit_index = i40e_unused_pit_index(pf);
4255                 } else {
4256                         pit_index = flex_pit->pit_index;
4257                 }
4258
4259                 /* Update the mask with the new offset */
4260                 new_mask |= i40e_pit_index_to_mask(pit_index);
4261         }
4262
4263         /* If the mask and flexible filter offsets for this filter match the
4264          * currently programmed values we don't need any input set change, so
4265          * this filter is safe to install.
4266          */
4267         if (new_mask == current_mask && !new_flex_offset)
4268                 return 0;
4269
4270         netif_info(pf, drv, vsi->netdev, "Input set change requested for %s flows:\n",
4271                    i40e_flow_str(fsp));
4272         i40e_print_input_set(vsi, current_mask, new_mask);
4273         if (new_flex_offset) {
4274                 netif_info(pf, drv, vsi->netdev, "FLEX index %d: Offset -> %d",
4275                            pit_index, src_offset);
4276         }
4277
4278         /* Hardware input sets are global across multiple ports, so even the
4279          * main port cannot change them when in MFP mode as this would impact
4280          * any filters on the other ports.
4281          */
4282         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4283                 netif_err(pf, drv, vsi->netdev, "Cannot change Flow Director input sets while MFP is enabled\n");
4284                 return -EOPNOTSUPP;
4285         }
4286
4287         /* This filter requires us to update the input set. However, hardware
4288          * only supports one input set per flow type, and does not support
4289          * separate masks for each filter. This means that we can only support
4290          * a single mask for all filters of a specific type.
4291          *
4292          * If we have preexisting filters, they obviously depend on the
4293          * current programmed input set. Display a diagnostic message in this
4294          * case explaining why the filter could not be accepted.
4295          */
4296         if (*fdir_filter_count) {
4297                 netif_err(pf, drv, vsi->netdev, "Cannot change input set for %s flows until %d preexisting filters are removed\n",
4298                           i40e_flow_str(fsp),
4299                           *fdir_filter_count);
4300                 return -EOPNOTSUPP;
4301         }
4302
4303         i40e_write_fd_input_set(pf, index, new_mask);
4304
4305         /* IP_USER_FLOW filters match both IPv4/Other and IPv4/Fragmented
4306          * frames. If we're programming the input set for IPv4/Other, we also
4307          * need to program the IPv4/Fragmented input set. Since we don't have
4308          * separate support, we'll always assume and enforce that the two flow
4309          * types must have matching input sets.
4310          */
4311         if (index == I40E_FILTER_PCTYPE_NONF_IPV4_OTHER)
4312                 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
4313                                         new_mask);
4314
4315         /* Add the new offset and update table, if necessary */
4316         if (new_flex_offset) {
4317                 err = i40e_add_flex_offset(&pf->l4_flex_pit_list, src_offset,
4318                                            pit_index);
4319                 if (err)
4320                         return err;
4321
4322                 if (flex_l3) {
4323                         err = i40e_add_flex_offset(&pf->l3_flex_pit_list,
4324                                                    src_offset,
4325                                                    pit_index);
4326                         if (err)
4327                                 return err;
4328                 }
4329
4330                 i40e_reprogram_flex_pit(pf);
4331         }
4332
4333         return 0;
4334 }
4335
4336 /**
4337  * i40e_match_fdir_filter - Return true of two filters match
4338  * @a: pointer to filter struct
4339  * @b: pointer to filter struct
4340  *
4341  * Returns true if the two filters match exactly the same criteria. I.e. they
4342  * match the same flow type and have the same parameters. We don't need to
4343  * check any input-set since all filters of the same flow type must use the
4344  * same input set.
4345  **/
4346 static bool i40e_match_fdir_filter(struct i40e_fdir_filter *a,
4347                                    struct i40e_fdir_filter *b)
4348 {
4349         /* The filters do not much if any of these criteria differ. */
4350         if (a->dst_ip != b->dst_ip ||
4351             a->src_ip != b->src_ip ||
4352             a->dst_port != b->dst_port ||
4353             a->src_port != b->src_port ||
4354             a->flow_type != b->flow_type ||
4355             a->ip4_proto != b->ip4_proto)
4356                 return false;
4357
4358         return true;
4359 }
4360
4361 /**
4362  * i40e_disallow_matching_filters - Check that new filters differ
4363  * @vsi: pointer to the targeted VSI
4364  * @input: new filter to check
4365  *
4366  * Due to hardware limitations, it is not possible for two filters that match
4367  * similar criteria to be programmed at the same time. This is true for a few
4368  * reasons:
4369  *
4370  * (a) all filters matching a particular flow type must use the same input
4371  * set, that is they must match the same criteria.
4372  * (b) different flow types will never match the same packet, as the flow type
4373  * is decided by hardware before checking which rules apply.
4374  * (c) hardware has no way to distinguish which order filters apply in.
4375  *
4376  * Due to this, we can't really support using the location data to order
4377  * filters in the hardware parsing. It is technically possible for the user to
4378  * request two filters matching the same criteria but which select different
4379  * queues. In this case, rather than keep both filters in the list, we reject
4380  * the 2nd filter when the user requests adding it.
4381  *
4382  * This avoids needing to track location for programming the filter to
4383  * hardware, and ensures that we avoid some strange scenarios involving
4384  * deleting filters which match the same criteria.
4385  **/
4386 static int i40e_disallow_matching_filters(struct i40e_vsi *vsi,
4387                                           struct i40e_fdir_filter *input)
4388 {
4389         struct i40e_pf *pf = vsi->back;
4390         struct i40e_fdir_filter *rule;
4391         struct hlist_node *node2;
4392
4393         /* Loop through every filter, and check that it doesn't match */
4394         hlist_for_each_entry_safe(rule, node2,
4395                                   &pf->fdir_filter_list, fdir_node) {
4396                 /* Don't check the filters match if they share the same fd_id,
4397                  * since the new filter is actually just updating the target
4398                  * of the old filter.
4399                  */
4400                 if (rule->fd_id == input->fd_id)
4401                         continue;
4402
4403                 /* If any filters match, then print a warning message to the
4404                  * kernel message buffer and bail out.
4405                  */
4406                 if (i40e_match_fdir_filter(rule, input)) {
4407                         dev_warn(&pf->pdev->dev,
4408                                  "Existing user defined filter %d already matches this flow.\n",
4409                                  rule->fd_id);
4410                         return -EINVAL;
4411                 }
4412         }
4413
4414         return 0;
4415 }
4416
4417 /**
4418  * i40e_add_fdir_ethtool - Add/Remove Flow Director filters
4419  * @vsi: pointer to the targeted VSI
4420  * @cmd: command to get or set RX flow classification rules
4421  *
4422  * Add Flow Director filters for a specific flow spec based on their
4423  * protocol.  Returns 0 if the filters were successfully added.
4424  **/
4425 static int i40e_add_fdir_ethtool(struct i40e_vsi *vsi,
4426                                  struct ethtool_rxnfc *cmd)
4427 {
4428         struct i40e_rx_flow_userdef userdef;
4429         struct ethtool_rx_flow_spec *fsp;
4430         struct i40e_fdir_filter *input;
4431         u16 dest_vsi = 0, q_index = 0;
4432         struct i40e_pf *pf;
4433         int ret = -EINVAL;
4434         u8 dest_ctl;
4435
4436         if (!vsi)
4437                 return -EINVAL;
4438         pf = vsi->back;
4439
4440         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
4441                 return -EOPNOTSUPP;
4442
4443         if (test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
4444                 return -ENOSPC;
4445
4446         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
4447             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
4448                 return -EBUSY;
4449
4450         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
4451                 return -EBUSY;
4452
4453         fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
4454
4455         /* Parse the user-defined field */
4456         if (i40e_parse_rx_flow_user_data(fsp, &userdef))
4457                 return -EINVAL;
4458
4459         /* Extended MAC field is not supported */
4460         if (fsp->flow_type & FLOW_MAC_EXT)
4461                 return -EINVAL;
4462
4463         ret = i40e_check_fdir_input_set(vsi, fsp, &userdef);
4464         if (ret)
4465                 return ret;
4466
4467         if (fsp->location >= (pf->hw.func_caps.fd_filters_best_effort +
4468                               pf->hw.func_caps.fd_filters_guaranteed)) {
4469                 return -EINVAL;
4470         }
4471
4472         /* ring_cookie is either the drop index, or is a mask of the queue
4473          * index and VF id we wish to target.
4474          */
4475         if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
4476                 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4477         } else {
4478                 u32 ring = ethtool_get_flow_spec_ring(fsp->ring_cookie);
4479                 u8 vf = ethtool_get_flow_spec_ring_vf(fsp->ring_cookie);
4480
4481                 if (!vf) {
4482                         if (ring >= vsi->num_queue_pairs)
4483                                 return -EINVAL;
4484                         dest_vsi = vsi->id;
4485                 } else {
4486                         /* VFs are zero-indexed, so we subtract one here */
4487                         vf--;
4488
4489                         if (vf >= pf->num_alloc_vfs)
4490                                 return -EINVAL;
4491                         if (ring >= pf->vf[vf].num_queue_pairs)
4492                                 return -EINVAL;
4493                         dest_vsi = pf->vf[vf].lan_vsi_id;
4494                 }
4495                 dest_ctl = I40E_FILTER_PROGRAM_DESC_DEST_DIRECT_PACKET_QINDEX;
4496                 q_index = ring;
4497         }
4498
4499         input = kzalloc(sizeof(*input), GFP_KERNEL);
4500
4501         if (!input)
4502                 return -ENOMEM;
4503
4504         input->fd_id = fsp->location;
4505         input->q_index = q_index;
4506         input->dest_vsi = dest_vsi;
4507         input->dest_ctl = dest_ctl;
4508         input->fd_status = I40E_FILTER_PROGRAM_DESC_FD_STATUS_FD_ID;
4509         input->cnt_index  = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
4510         input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4511         input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4512         input->flow_type = fsp->flow_type & ~FLOW_EXT;
4513         input->ip4_proto = fsp->h_u.usr_ip4_spec.proto;
4514
4515         /* Reverse the src and dest notion, since the HW expects them to be from
4516          * Tx perspective where as the input from user is from Rx filter view.
4517          */
4518         input->dst_port = fsp->h_u.tcp_ip4_spec.psrc;
4519         input->src_port = fsp->h_u.tcp_ip4_spec.pdst;
4520         input->dst_ip = fsp->h_u.tcp_ip4_spec.ip4src;
4521         input->src_ip = fsp->h_u.tcp_ip4_spec.ip4dst;
4522
4523         if (userdef.flex_filter) {
4524                 input->flex_filter = true;
4525                 input->flex_word = cpu_to_be16(userdef.flex_word);
4526                 input->flex_offset = userdef.flex_offset;
4527         }
4528
4529         /* Avoid programming two filters with identical match criteria. */
4530         ret = i40e_disallow_matching_filters(vsi, input);
4531         if (ret)
4532                 goto free_filter_memory;
4533
4534         /* Add the input filter to the fdir_input_list, possibly replacing
4535          * a previous filter. Do not free the input structure after adding it
4536          * to the list as this would cause a use-after-free bug.
4537          */
4538         i40e_update_ethtool_fdir_entry(vsi, input, fsp->location, NULL);
4539         ret = i40e_add_del_fdir(vsi, input, true);
4540         if (ret)
4541                 goto remove_sw_rule;
4542         return 0;
4543
4544 remove_sw_rule:
4545         hlist_del(&input->fdir_node);
4546         pf->fdir_pf_active_filters--;
4547 free_filter_memory:
4548         kfree(input);
4549         return ret;
4550 }
4551
4552 /**
4553  * i40e_set_rxnfc - command to set RX flow classification rules
4554  * @netdev: network interface device structure
4555  * @cmd: ethtool rxnfc command
4556  *
4557  * Returns Success if the command is supported.
4558  **/
4559 static int i40e_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
4560 {
4561         struct i40e_netdev_priv *np = netdev_priv(netdev);
4562         struct i40e_vsi *vsi = np->vsi;
4563         struct i40e_pf *pf = vsi->back;
4564         int ret = -EOPNOTSUPP;
4565
4566         switch (cmd->cmd) {
4567         case ETHTOOL_SRXFH:
4568                 ret = i40e_set_rss_hash_opt(pf, cmd);
4569                 break;
4570         case ETHTOOL_SRXCLSRLINS:
4571                 ret = i40e_add_fdir_ethtool(vsi, cmd);
4572                 break;
4573         case ETHTOOL_SRXCLSRLDEL:
4574                 ret = i40e_del_fdir_entry(vsi, cmd);
4575                 break;
4576         default:
4577                 break;
4578         }
4579
4580         return ret;
4581 }
4582
4583 /**
4584  * i40e_max_channels - get Max number of combined channels supported
4585  * @vsi: vsi pointer
4586  **/
4587 static unsigned int i40e_max_channels(struct i40e_vsi *vsi)
4588 {
4589         /* TODO: This code assumes DCB and FD is disabled for now. */
4590         return vsi->alloc_queue_pairs;
4591 }
4592
4593 /**
4594  * i40e_get_channels - Get the current channels enabled and max supported etc.
4595  * @dev: network interface device structure
4596  * @ch: ethtool channels structure
4597  *
4598  * We don't support separate tx and rx queues as channels. The other count
4599  * represents how many queues are being used for control. max_combined counts
4600  * how many queue pairs we can support. They may not be mapped 1 to 1 with
4601  * q_vectors since we support a lot more queue pairs than q_vectors.
4602  **/
4603 static void i40e_get_channels(struct net_device *dev,
4604                               struct ethtool_channels *ch)
4605 {
4606         struct i40e_netdev_priv *np = netdev_priv(dev);
4607         struct i40e_vsi *vsi = np->vsi;
4608         struct i40e_pf *pf = vsi->back;
4609
4610         /* report maximum channels */
4611         ch->max_combined = i40e_max_channels(vsi);
4612
4613         /* report info for other vector */
4614         ch->other_count = (pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0;
4615         ch->max_other = ch->other_count;
4616
4617         /* Note: This code assumes DCB is disabled for now. */
4618         ch->combined_count = vsi->num_queue_pairs;
4619 }
4620
4621 /**
4622  * i40e_set_channels - Set the new channels count.
4623  * @dev: network interface device structure
4624  * @ch: ethtool channels structure
4625  *
4626  * The new channels count may not be the same as requested by the user
4627  * since it gets rounded down to a power of 2 value.
4628  **/
4629 static int i40e_set_channels(struct net_device *dev,
4630                              struct ethtool_channels *ch)
4631 {
4632         const u8 drop = I40E_FILTER_PROGRAM_DESC_DEST_DROP_PACKET;
4633         struct i40e_netdev_priv *np = netdev_priv(dev);
4634         unsigned int count = ch->combined_count;
4635         struct i40e_vsi *vsi = np->vsi;
4636         struct i40e_pf *pf = vsi->back;
4637         struct i40e_fdir_filter *rule;
4638         struct hlist_node *node2;
4639         int new_count;
4640         int err = 0;
4641
4642         /* We do not support setting channels for any other VSI at present */
4643         if (vsi->type != I40E_VSI_MAIN)
4644                 return -EINVAL;
4645
4646         /* We do not support setting channels via ethtool when TCs are
4647          * configured through mqprio
4648          */
4649         if (pf->flags & I40E_FLAG_TC_MQPRIO)
4650                 return -EINVAL;
4651
4652         /* verify they are not requesting separate vectors */
4653         if (!count || ch->rx_count || ch->tx_count)
4654                 return -EINVAL;
4655
4656         /* verify other_count has not changed */
4657         if (ch->other_count != ((pf->flags & I40E_FLAG_FD_SB_ENABLED) ? 1 : 0))
4658                 return -EINVAL;
4659
4660         /* verify the number of channels does not exceed hardware limits */
4661         if (count > i40e_max_channels(vsi))
4662                 return -EINVAL;
4663
4664         /* verify that the number of channels does not invalidate any current
4665          * flow director rules
4666          */
4667         hlist_for_each_entry_safe(rule, node2,
4668                                   &pf->fdir_filter_list, fdir_node) {
4669                 if (rule->dest_ctl != drop && count <= rule->q_index) {
4670                         dev_warn(&pf->pdev->dev,
4671                                  "Existing user defined filter %d assigns flow to queue %d\n",
4672                                  rule->fd_id, rule->q_index);
4673                         err = -EINVAL;
4674                 }
4675         }
4676
4677         if (err) {
4678                 dev_err(&pf->pdev->dev,
4679                         "Existing filter rules must be deleted to reduce combined channel count to %d\n",
4680                         count);
4681                 return err;
4682         }
4683
4684         /* update feature limits from largest to smallest supported values */
4685         /* TODO: Flow director limit, DCB etc */
4686
4687         /* use rss_reconfig to rebuild with new queue count and update traffic
4688          * class queue mapping
4689          */
4690         new_count = i40e_reconfig_rss_queues(pf, count);
4691         if (new_count > 0)
4692                 return 0;
4693         else
4694                 return -EINVAL;
4695 }
4696
4697 /**
4698  * i40e_get_rxfh_key_size - get the RSS hash key size
4699  * @netdev: network interface device structure
4700  *
4701  * Returns the table size.
4702  **/
4703 static u32 i40e_get_rxfh_key_size(struct net_device *netdev)
4704 {
4705         return I40E_HKEY_ARRAY_SIZE;
4706 }
4707
4708 /**
4709  * i40e_get_rxfh_indir_size - get the rx flow hash indirection table size
4710  * @netdev: network interface device structure
4711  *
4712  * Returns the table size.
4713  **/
4714 static u32 i40e_get_rxfh_indir_size(struct net_device *netdev)
4715 {
4716         return I40E_HLUT_ARRAY_SIZE;
4717 }
4718
4719 /**
4720  * i40e_get_rxfh - get the rx flow hash indirection table
4721  * @netdev: network interface device structure
4722  * @indir: indirection table
4723  * @key: hash key
4724  * @hfunc: hash function
4725  *
4726  * Reads the indirection table directly from the hardware. Returns 0 on
4727  * success.
4728  **/
4729 static int i40e_get_rxfh(struct net_device *netdev, u32 *indir, u8 *key,
4730                          u8 *hfunc)
4731 {
4732         struct i40e_netdev_priv *np = netdev_priv(netdev);
4733         struct i40e_vsi *vsi = np->vsi;
4734         u8 *lut, *seed = NULL;
4735         int ret;
4736         u16 i;
4737
4738         if (hfunc)
4739                 *hfunc = ETH_RSS_HASH_TOP;
4740
4741         if (!indir)
4742                 return 0;
4743
4744         seed = key;
4745         lut = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
4746         if (!lut)
4747                 return -ENOMEM;
4748         ret = i40e_get_rss(vsi, seed, lut, I40E_HLUT_ARRAY_SIZE);
4749         if (ret)
4750                 goto out;
4751         for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
4752                 indir[i] = (u32)(lut[i]);
4753
4754 out:
4755         kfree(lut);
4756
4757         return ret;
4758 }
4759
4760 /**
4761  * i40e_set_rxfh - set the rx flow hash indirection table
4762  * @netdev: network interface device structure
4763  * @indir: indirection table
4764  * @key: hash key
4765  * @hfunc: hash function to use
4766  *
4767  * Returns -EINVAL if the table specifies an invalid queue id, otherwise
4768  * returns 0 after programming the table.
4769  **/
4770 static int i40e_set_rxfh(struct net_device *netdev, const u32 *indir,
4771                          const u8 *key, const u8 hfunc)
4772 {
4773         struct i40e_netdev_priv *np = netdev_priv(netdev);
4774         struct i40e_vsi *vsi = np->vsi;
4775         struct i40e_pf *pf = vsi->back;
4776         u8 *seed = NULL;
4777         u16 i;
4778
4779         if (hfunc != ETH_RSS_HASH_NO_CHANGE && hfunc != ETH_RSS_HASH_TOP)
4780                 return -EOPNOTSUPP;
4781
4782         if (key) {
4783                 if (!vsi->rss_hkey_user) {
4784                         vsi->rss_hkey_user = kzalloc(I40E_HKEY_ARRAY_SIZE,
4785                                                      GFP_KERNEL);
4786                         if (!vsi->rss_hkey_user)
4787                                 return -ENOMEM;
4788                 }
4789                 memcpy(vsi->rss_hkey_user, key, I40E_HKEY_ARRAY_SIZE);
4790                 seed = vsi->rss_hkey_user;
4791         }
4792         if (!vsi->rss_lut_user) {
4793                 vsi->rss_lut_user = kzalloc(I40E_HLUT_ARRAY_SIZE, GFP_KERNEL);
4794                 if (!vsi->rss_lut_user)
4795                         return -ENOMEM;
4796         }
4797
4798         /* Each 32 bits pointed by 'indir' is stored with a lut entry */
4799         if (indir)
4800                 for (i = 0; i < I40E_HLUT_ARRAY_SIZE; i++)
4801                         vsi->rss_lut_user[i] = (u8)(indir[i]);
4802         else
4803                 i40e_fill_rss_lut(pf, vsi->rss_lut_user, I40E_HLUT_ARRAY_SIZE,
4804                                   vsi->rss_size);
4805
4806         return i40e_config_rss(vsi, seed, vsi->rss_lut_user,
4807                                I40E_HLUT_ARRAY_SIZE);
4808 }
4809
4810 /**
4811  * i40e_get_priv_flags - report device private flags
4812  * @dev: network interface device structure
4813  *
4814  * The get string set count and the string set should be matched for each
4815  * flag returned.  Add new strings for each flag to the i40e_gstrings_priv_flags
4816  * array.
4817  *
4818  * Returns a u32 bitmap of flags.
4819  **/
4820 static u32 i40e_get_priv_flags(struct net_device *dev)
4821 {
4822         struct i40e_netdev_priv *np = netdev_priv(dev);
4823         struct i40e_vsi *vsi = np->vsi;
4824         struct i40e_pf *pf = vsi->back;
4825         u32 i, j, ret_flags = 0;
4826
4827         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
4828                 const struct i40e_priv_flags *priv_flags;
4829
4830                 priv_flags = &i40e_gstrings_priv_flags[i];
4831
4832                 if (priv_flags->flag & pf->flags)
4833                         ret_flags |= BIT(i);
4834         }
4835
4836         if (pf->hw.pf_id != 0)
4837                 return ret_flags;
4838
4839         for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
4840                 const struct i40e_priv_flags *priv_flags;
4841
4842                 priv_flags = &i40e_gl_gstrings_priv_flags[j];
4843
4844                 if (priv_flags->flag & pf->flags)
4845                         ret_flags |= BIT(i + j);
4846         }
4847
4848         return ret_flags;
4849 }
4850
4851 /**
4852  * i40e_set_priv_flags - set private flags
4853  * @dev: network interface device structure
4854  * @flags: bit flags to be set
4855  **/
4856 static int i40e_set_priv_flags(struct net_device *dev, u32 flags)
4857 {
4858         struct i40e_netdev_priv *np = netdev_priv(dev);
4859         u64 orig_flags, new_flags, changed_flags;
4860         enum i40e_admin_queue_err adq_err;
4861         struct i40e_vsi *vsi = np->vsi;
4862         struct i40e_pf *pf = vsi->back;
4863         bool is_reset_needed;
4864         i40e_status status;
4865         u32 i, j;
4866
4867         orig_flags = READ_ONCE(pf->flags);
4868         new_flags = orig_flags;
4869
4870         for (i = 0; i < I40E_PRIV_FLAGS_STR_LEN; i++) {
4871                 const struct i40e_priv_flags *priv_flags;
4872
4873                 priv_flags = &i40e_gstrings_priv_flags[i];
4874
4875                 if (flags & BIT(i))
4876                         new_flags |= priv_flags->flag;
4877                 else
4878                         new_flags &= ~(priv_flags->flag);
4879
4880                 /* If this is a read-only flag, it can't be changed */
4881                 if (priv_flags->read_only &&
4882                     ((orig_flags ^ new_flags) & ~BIT(i)))
4883                         return -EOPNOTSUPP;
4884         }
4885
4886         if (pf->hw.pf_id != 0)
4887                 goto flags_complete;
4888
4889         for (j = 0; j < I40E_GL_PRIV_FLAGS_STR_LEN; j++) {
4890                 const struct i40e_priv_flags *priv_flags;
4891
4892                 priv_flags = &i40e_gl_gstrings_priv_flags[j];
4893
4894                 if (flags & BIT(i + j))
4895                         new_flags |= priv_flags->flag;
4896                 else
4897                         new_flags &= ~(priv_flags->flag);
4898
4899                 /* If this is a read-only flag, it can't be changed */
4900                 if (priv_flags->read_only &&
4901                     ((orig_flags ^ new_flags) & ~BIT(i)))
4902                         return -EOPNOTSUPP;
4903         }
4904
4905 flags_complete:
4906         changed_flags = orig_flags ^ new_flags;
4907
4908         is_reset_needed = !!(changed_flags & (I40E_FLAG_VEB_STATS_ENABLED |
4909                 I40E_FLAG_LEGACY_RX | I40E_FLAG_SOURCE_PRUNING_DISABLED |
4910                 I40E_FLAG_DISABLE_FW_LLDP));
4911
4912         /* Before we finalize any flag changes, we need to perform some
4913          * checks to ensure that the changes are supported and safe.
4914          */
4915
4916         /* ATR eviction is not supported on all devices */
4917         if ((new_flags & I40E_FLAG_HW_ATR_EVICT_ENABLED) &&
4918             !(pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE))
4919                 return -EOPNOTSUPP;
4920
4921         /* If the driver detected FW LLDP was disabled on init, this flag could
4922          * be set, however we do not support _changing_ the flag:
4923          * - on XL710 if NPAR is enabled or FW API version < 1.7
4924          * - on X722 with FW API version < 1.6
4925          * There are situations where older FW versions/NPAR enabled PFs could
4926          * disable LLDP, however we _must_ not allow the user to enable/disable
4927          * LLDP with this flag on unsupported FW versions.
4928          */
4929         if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
4930                 if (!(pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE)) {
4931                         dev_warn(&pf->pdev->dev,
4932                                  "Device does not support changing FW LLDP\n");
4933                         return -EOPNOTSUPP;
4934                 }
4935         }
4936
4937         if (((changed_flags & I40E_FLAG_RS_FEC) ||
4938              (changed_flags & I40E_FLAG_BASE_R_FEC)) &&
4939             pf->hw.device_id != I40E_DEV_ID_25G_SFP28 &&
4940             pf->hw.device_id != I40E_DEV_ID_25G_B) {
4941                 dev_warn(&pf->pdev->dev,
4942                          "Device does not support changing FEC configuration\n");
4943                 return -EOPNOTSUPP;
4944         }
4945
4946         /* Process any additional changes needed as a result of flag changes.
4947          * The changed_flags value reflects the list of bits that were
4948          * changed in the code above.
4949          */
4950
4951         /* Flush current ATR settings if ATR was disabled */
4952         if ((changed_flags & I40E_FLAG_FD_ATR_ENABLED) &&
4953             !(new_flags & I40E_FLAG_FD_ATR_ENABLED)) {
4954                 set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
4955                 set_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
4956         }
4957
4958         if (changed_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT) {
4959                 u16 sw_flags = 0, valid_flags = 0;
4960                 int ret;
4961
4962                 if (!(new_flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
4963                         sw_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
4964                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
4965                 ret = i40e_aq_set_switch_config(&pf->hw, sw_flags, valid_flags,
4966                                                 0, NULL);
4967                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
4968                         dev_info(&pf->pdev->dev,
4969                                  "couldn't set switch config bits, err %s aq_err %s\n",
4970                                  i40e_stat_str(&pf->hw, ret),
4971                                  i40e_aq_str(&pf->hw,
4972                                              pf->hw.aq.asq_last_status));
4973                         /* not a fatal problem, just keep going */
4974                 }
4975         }
4976
4977         if ((changed_flags & I40E_FLAG_RS_FEC) ||
4978             (changed_flags & I40E_FLAG_BASE_R_FEC)) {
4979                 u8 fec_cfg = 0;
4980
4981                 if (new_flags & I40E_FLAG_RS_FEC &&
4982                     new_flags & I40E_FLAG_BASE_R_FEC) {
4983                         fec_cfg = I40E_AQ_SET_FEC_AUTO;
4984                 } else if (new_flags & I40E_FLAG_RS_FEC) {
4985                         fec_cfg = (I40E_AQ_SET_FEC_REQUEST_RS |
4986                                    I40E_AQ_SET_FEC_ABILITY_RS);
4987                 } else if (new_flags & I40E_FLAG_BASE_R_FEC) {
4988                         fec_cfg = (I40E_AQ_SET_FEC_REQUEST_KR |
4989                                    I40E_AQ_SET_FEC_ABILITY_KR);
4990                 }
4991                 if (i40e_set_fec_cfg(dev, fec_cfg))
4992                         dev_warn(&pf->pdev->dev, "Cannot change FEC config\n");
4993         }
4994
4995         if ((changed_flags & new_flags &
4996              I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED) &&
4997             (new_flags & I40E_FLAG_MFP_ENABLED))
4998                 dev_warn(&pf->pdev->dev,
4999                          "Turning on link-down-on-close flag may affect other partitions\n");
5000
5001         if (changed_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5002                 if (new_flags & I40E_FLAG_DISABLE_FW_LLDP) {
5003                         struct i40e_dcbx_config *dcbcfg;
5004
5005                         i40e_aq_stop_lldp(&pf->hw, true, false, NULL);
5006                         i40e_aq_set_dcb_parameters(&pf->hw, true, NULL);
5007                         /* reset local_dcbx_config to default */
5008                         dcbcfg = &pf->hw.local_dcbx_config;
5009                         dcbcfg->etscfg.willing = 1;
5010                         dcbcfg->etscfg.maxtcs = 0;
5011                         dcbcfg->etscfg.tcbwtable[0] = 100;
5012                         for (i = 1; i < I40E_MAX_TRAFFIC_CLASS; i++)
5013                                 dcbcfg->etscfg.tcbwtable[i] = 0;
5014                         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
5015                                 dcbcfg->etscfg.prioritytable[i] = 0;
5016                         dcbcfg->etscfg.tsatable[0] = I40E_IEEE_TSA_ETS;
5017                         dcbcfg->pfc.willing = 1;
5018                         dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
5019                 } else {
5020                         status = i40e_aq_start_lldp(&pf->hw, false, NULL);
5021                         if (status) {
5022                                 adq_err = pf->hw.aq.asq_last_status;
5023                                 switch (adq_err) {
5024                                 case I40E_AQ_RC_EEXIST:
5025                                         dev_warn(&pf->pdev->dev,
5026                                                  "FW LLDP agent is already running\n");
5027                                         is_reset_needed = false;
5028                                         break;
5029                                 case I40E_AQ_RC_EPERM:
5030                                         dev_warn(&pf->pdev->dev,
5031                                                  "Device configuration forbids SW from starting the LLDP agent.\n");
5032                                         return -EINVAL;
5033                                 default:
5034                                         dev_warn(&pf->pdev->dev,
5035                                                  "Starting FW LLDP agent failed: error: %s, %s\n",
5036                                                  i40e_stat_str(&pf->hw,
5037                                                                status),
5038                                                  i40e_aq_str(&pf->hw,
5039                                                              adq_err));
5040                                         return -EINVAL;
5041                                 }
5042                         }
5043                 }
5044         }
5045
5046         /* Now that we've checked to ensure that the new flags are valid, load
5047          * them into place. Since we only modify flags either (a) during
5048          * initialization or (b) while holding the RTNL lock, we don't need
5049          * anything fancy here.
5050          */
5051         pf->flags = new_flags;
5052
5053         /* Issue reset to cause things to take effect, as additional bits
5054          * are added we will need to create a mask of bits requiring reset
5055          */
5056         if (is_reset_needed)
5057                 i40e_do_reset(pf, BIT(__I40E_PF_RESET_REQUESTED), true);
5058
5059         return 0;
5060 }
5061
5062 /**
5063  * i40e_get_module_info - get (Q)SFP+ module type info
5064  * @netdev: network interface device structure
5065  * @modinfo: module EEPROM size and layout information structure
5066  **/
5067 static int i40e_get_module_info(struct net_device *netdev,
5068                                 struct ethtool_modinfo *modinfo)
5069 {
5070         struct i40e_netdev_priv *np = netdev_priv(netdev);
5071         struct i40e_vsi *vsi = np->vsi;
5072         struct i40e_pf *pf = vsi->back;
5073         struct i40e_hw *hw = &pf->hw;
5074         u32 sff8472_comp = 0;
5075         u32 sff8472_swap = 0;
5076         u32 sff8636_rev = 0;
5077         i40e_status status;
5078         u32 type = 0;
5079
5080         /* Check if firmware supports reading module EEPROM. */
5081         if (!(hw->flags & I40E_HW_FLAG_AQ_PHY_ACCESS_CAPABLE)) {
5082                 netdev_err(vsi->netdev, "Module EEPROM memory read not supported. Please update the NVM image.\n");
5083                 return -EINVAL;
5084         }
5085
5086         status = i40e_update_link_info(hw);
5087         if (status)
5088                 return -EIO;
5089
5090         if (hw->phy.link_info.phy_type == I40E_PHY_TYPE_EMPTY) {
5091                 netdev_err(vsi->netdev, "Cannot read module EEPROM memory. No module connected.\n");
5092                 return -EINVAL;
5093         }
5094
5095         type = hw->phy.link_info.module_type[0];
5096
5097         switch (type) {
5098         case I40E_MODULE_TYPE_SFP:
5099                 status = i40e_aq_get_phy_register(hw,
5100                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5101                                 I40E_I2C_EEPROM_DEV_ADDR,
5102                                 I40E_MODULE_SFF_8472_COMP,
5103                                 &sff8472_comp, NULL);
5104                 if (status)
5105                         return -EIO;
5106
5107                 status = i40e_aq_get_phy_register(hw,
5108                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5109                                 I40E_I2C_EEPROM_DEV_ADDR,
5110                                 I40E_MODULE_SFF_8472_SWAP,
5111                                 &sff8472_swap, NULL);
5112                 if (status)
5113                         return -EIO;
5114
5115                 /* Check if the module requires address swap to access
5116                  * the other EEPROM memory page.
5117                  */
5118                 if (sff8472_swap & I40E_MODULE_SFF_ADDR_MODE) {
5119                         netdev_warn(vsi->netdev, "Module address swap to access page 0xA2 is not supported.\n");
5120                         modinfo->type = ETH_MODULE_SFF_8079;
5121                         modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5122                 } else if (sff8472_comp == 0x00) {
5123                         /* Module is not SFF-8472 compliant */
5124                         modinfo->type = ETH_MODULE_SFF_8079;
5125                         modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
5126                 } else {
5127                         modinfo->type = ETH_MODULE_SFF_8472;
5128                         modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
5129                 }
5130                 break;
5131         case I40E_MODULE_TYPE_QSFP_PLUS:
5132                 /* Read from memory page 0. */
5133                 status = i40e_aq_get_phy_register(hw,
5134                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5135                                 0,
5136                                 I40E_MODULE_REVISION_ADDR,
5137                                 &sff8636_rev, NULL);
5138                 if (status)
5139                         return -EIO;
5140                 /* Determine revision compliance byte */
5141                 if (sff8636_rev > 0x02) {
5142                         /* Module is SFF-8636 compliant */
5143                         modinfo->type = ETH_MODULE_SFF_8636;
5144                         modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5145                 } else {
5146                         modinfo->type = ETH_MODULE_SFF_8436;
5147                         modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5148                 }
5149                 break;
5150         case I40E_MODULE_TYPE_QSFP28:
5151                 modinfo->type = ETH_MODULE_SFF_8636;
5152                 modinfo->eeprom_len = I40E_MODULE_QSFP_MAX_LEN;
5153                 break;
5154         default:
5155                 netdev_err(vsi->netdev, "Module type unrecognized\n");
5156                 return -EINVAL;
5157         }
5158         return 0;
5159 }
5160
5161 /**
5162  * i40e_get_module_eeprom - fills buffer with (Q)SFP+ module memory contents
5163  * @netdev: network interface device structure
5164  * @ee: EEPROM dump request structure
5165  * @data: buffer to be filled with EEPROM contents
5166  **/
5167 static int i40e_get_module_eeprom(struct net_device *netdev,
5168                                   struct ethtool_eeprom *ee,
5169                                   u8 *data)
5170 {
5171         struct i40e_netdev_priv *np = netdev_priv(netdev);
5172         struct i40e_vsi *vsi = np->vsi;
5173         struct i40e_pf *pf = vsi->back;
5174         struct i40e_hw *hw = &pf->hw;
5175         bool is_sfp = false;
5176         i40e_status status;
5177         u32 value = 0;
5178         int i;
5179
5180         if (!ee || !ee->len || !data)
5181                 return -EINVAL;
5182
5183         if (hw->phy.link_info.module_type[0] == I40E_MODULE_TYPE_SFP)
5184                 is_sfp = true;
5185
5186         for (i = 0; i < ee->len; i++) {
5187                 u32 offset = i + ee->offset;
5188                 u32 addr = is_sfp ? I40E_I2C_EEPROM_DEV_ADDR : 0;
5189
5190                 /* Check if we need to access the other memory page */
5191                 if (is_sfp) {
5192                         if (offset >= ETH_MODULE_SFF_8079_LEN) {
5193                                 offset -= ETH_MODULE_SFF_8079_LEN;
5194                                 addr = I40E_I2C_EEPROM_DEV_ADDR2;
5195                         }
5196                 } else {
5197                         while (offset >= ETH_MODULE_SFF_8436_LEN) {
5198                                 /* Compute memory page number and offset. */
5199                                 offset -= ETH_MODULE_SFF_8436_LEN / 2;
5200                                 addr++;
5201                         }
5202                 }
5203
5204                 status = i40e_aq_get_phy_register(hw,
5205                                 I40E_AQ_PHY_REG_ACCESS_EXTERNAL_MODULE,
5206                                 addr, offset, &value, NULL);
5207                 if (status)
5208                         return -EIO;
5209                 data[i] = value;
5210         }
5211         return 0;
5212 }
5213
5214 static int i40e_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
5215 {
5216         return -EOPNOTSUPP;
5217 }
5218
5219 static int i40e_set_eee(struct net_device *netdev, struct ethtool_eee *edata)
5220 {
5221         return -EOPNOTSUPP;
5222 }
5223
5224 static const struct ethtool_ops i40e_ethtool_recovery_mode_ops = {
5225         .set_eeprom             = i40e_set_eeprom,
5226         .get_eeprom_len         = i40e_get_eeprom_len,
5227         .get_eeprom             = i40e_get_eeprom,
5228 };
5229
5230 static const struct ethtool_ops i40e_ethtool_ops = {
5231         .get_drvinfo            = i40e_get_drvinfo,
5232         .get_regs_len           = i40e_get_regs_len,
5233         .get_regs               = i40e_get_regs,
5234         .nway_reset             = i40e_nway_reset,
5235         .get_link               = ethtool_op_get_link,
5236         .get_wol                = i40e_get_wol,
5237         .set_wol                = i40e_set_wol,
5238         .set_eeprom             = i40e_set_eeprom,
5239         .get_eeprom_len         = i40e_get_eeprom_len,
5240         .get_eeprom             = i40e_get_eeprom,
5241         .get_ringparam          = i40e_get_ringparam,
5242         .set_ringparam          = i40e_set_ringparam,
5243         .get_pauseparam         = i40e_get_pauseparam,
5244         .set_pauseparam         = i40e_set_pauseparam,
5245         .get_msglevel           = i40e_get_msglevel,
5246         .set_msglevel           = i40e_set_msglevel,
5247         .get_rxnfc              = i40e_get_rxnfc,
5248         .set_rxnfc              = i40e_set_rxnfc,
5249         .self_test              = i40e_diag_test,
5250         .get_strings            = i40e_get_strings,
5251         .get_eee                = i40e_get_eee,
5252         .set_eee                = i40e_set_eee,
5253         .set_phys_id            = i40e_set_phys_id,
5254         .get_sset_count         = i40e_get_sset_count,
5255         .get_ethtool_stats      = i40e_get_ethtool_stats,
5256         .get_coalesce           = i40e_get_coalesce,
5257         .set_coalesce           = i40e_set_coalesce,
5258         .get_rxfh_key_size      = i40e_get_rxfh_key_size,
5259         .get_rxfh_indir_size    = i40e_get_rxfh_indir_size,
5260         .get_rxfh               = i40e_get_rxfh,
5261         .set_rxfh               = i40e_set_rxfh,
5262         .get_channels           = i40e_get_channels,
5263         .set_channels           = i40e_set_channels,
5264         .get_module_info        = i40e_get_module_info,
5265         .get_module_eeprom      = i40e_get_module_eeprom,
5266         .get_ts_info            = i40e_get_ts_info,
5267         .get_priv_flags         = i40e_get_priv_flags,
5268         .set_priv_flags         = i40e_set_priv_flags,
5269         .get_per_queue_coalesce = i40e_get_per_queue_coalesce,
5270         .set_per_queue_coalesce = i40e_set_per_queue_coalesce,
5271         .get_link_ksettings     = i40e_get_link_ksettings,
5272         .set_link_ksettings     = i40e_set_link_ksettings,
5273         .get_fecparam = i40e_get_fec_param,
5274         .set_fecparam = i40e_set_fec_param,
5275         .flash_device = i40e_ddp_flash,
5276 };
5277
5278 void i40e_set_ethtool_ops(struct net_device *netdev)
5279 {
5280         struct i40e_netdev_priv *np = netdev_priv(netdev);
5281         struct i40e_pf          *pf = np->vsi->back;
5282
5283         if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
5284                 netdev->ethtool_ops = &i40e_ethtool_ops;
5285         else
5286                 netdev->ethtool_ops = &i40e_ethtool_recovery_mode_ops;
5287 }