drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c

   1 /*******************************************************************************
   2
   3   Intel 10 Gigabit PCI Express Linux driver
   4   Copyright(c) 1999 - 2011 Intel Corporation.
   5
   6   This program is free software; you can redistribute it and/or modify it
   7   under the terms and conditions of the GNU General Public License,
   8   version 2, as published by the Free Software Foundation.
   9
  10   This program is distributed in the hope it will be useful, but WITHOUT
  11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13   more details.
  14
  15   You should have received a copy of the GNU General Public License along with
  16   this program; if not, write to the Free Software Foundation, Inc.,
  17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18
  19   The full GNU General Public License is included in this distribution in
  20   the file called "COPYING".
  21
  22   Contact Information:
  23   Linux NICS <linux.nics@intel.com>
  24   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  25   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  26
  27 *******************************************************************************/
  28
  29 #include "ixgbe.h"
  30 #include <linux/dcbnl.h>
  31 #include "ixgbe_dcb_82598.h"
  32 #include "ixgbe_dcb_82599.h"
  33
  34 /* Callbacks for DCB netlink in the kernel */
  35 #define BIT_DCB_MODE    0x01
  36 #define BIT_PFC         0x02
  37 #define BIT_PG_RX       0x04
  38 #define BIT_PG_TX       0x08
  39 #define BIT_APP_UPCHG   0x10
  40 #define BIT_LINKSPEED   0x80
  41
  42 /* Responses for the DCB_C_SET_ALL command */
  43 #define DCB_HW_CHG_RST  0  /* DCB configuration changed with reset */
  44 #define DCB_NO_HW_CHG   1  /* DCB configuration did not change */
  45 #define DCB_HW_CHG      2  /* DCB configuration changed, no reset */
  46
  47 int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg,
  48                        struct ixgbe_dcb_config *dst_dcb_cfg, int tc_max)
  49 {
  50         struct tc_configuration *src_tc_cfg = NULL;
  51         struct tc_configuration *dst_tc_cfg = NULL;
  52         int i;
  53
  54         if (!src_dcb_cfg || !dst_dcb_cfg)
  55                 return -EINVAL;
  56
  57         for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) {
  58                 src_tc_cfg = &src_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
  59                 dst_tc_cfg = &dst_dcb_cfg->tc_config[i - DCB_PG_ATTR_TC_0];
  60
  61                 dst_tc_cfg->path[DCB_TX_CONFIG].prio_type =
  62                                 src_tc_cfg->path[DCB_TX_CONFIG].prio_type;
  63
  64                 dst_tc_cfg->path[DCB_TX_CONFIG].bwg_id =
  65                                 src_tc_cfg->path[DCB_TX_CONFIG].bwg_id;
  66
  67                 dst_tc_cfg->path[DCB_TX_CONFIG].bwg_percent =
  68                                 src_tc_cfg->path[DCB_TX_CONFIG].bwg_percent;
  69
  70                 dst_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap =
  71                                 src_tc_cfg->path[DCB_TX_CONFIG].up_to_tc_bitmap;
  72
  73                 dst_tc_cfg->path[DCB_RX_CONFIG].prio_type =
  74                                 src_tc_cfg->path[DCB_RX_CONFIG].prio_type;
  75
  76                 dst_tc_cfg->path[DCB_RX_CONFIG].bwg_id =
  77                                 src_tc_cfg->path[DCB_RX_CONFIG].bwg_id;
  78
  79                 dst_tc_cfg->path[DCB_RX_CONFIG].bwg_percent =
  80                                 src_tc_cfg->path[DCB_RX_CONFIG].bwg_percent;
  81
  82                 dst_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap =
  83                                 src_tc_cfg->path[DCB_RX_CONFIG].up_to_tc_bitmap;
  84         }
  85
  86         for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) {
  87                 dst_dcb_cfg->bw_percentage[DCB_TX_CONFIG]
  88                         [i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
  89                                 [DCB_TX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
  90                 dst_dcb_cfg->bw_percentage[DCB_RX_CONFIG]
  91                         [i-DCB_PG_ATTR_BW_ID_0] = src_dcb_cfg->bw_percentage
  92                                 [DCB_RX_CONFIG][i-DCB_PG_ATTR_BW_ID_0];
  93         }
  94
  95         for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) {
  96                 dst_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc =
  97                         src_dcb_cfg->tc_config[i - DCB_PFC_UP_ATTR_0].dcb_pfc;
  98         }
  99
 100         dst_dcb_cfg->pfc_mode_enable = src_dcb_cfg->pfc_mode_enable;
 101
 102         return 0;
 103 }
 104
 105 static u8 ixgbe_dcbnl_get_state(struct net_device *netdev)
 106 {
 107         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 108
 109         return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
 110 }
 111
 112 static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
 113 {
 114         u8 err = 0;
 115         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 116
 117         /* Fail command if not in CEE mode */
 118         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 119                 return 1;
 120
 121         /* verify there is something to do, if not then exit */
 122         if (!!state != !(adapter->flags & IXGBE_FLAG_DCB_ENABLED))
 123                 return err;
 124
 125         if (state > 0)
 126                 err = ixgbe_setup_tc(netdev, adapter->dcb_cfg.num_tcs.pg_tcs);
 127         else
 128                 err = ixgbe_setup_tc(netdev, 0);
 129
 130         return err;
 131 }
 132
 133 static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev,
 134                                          u8 *perm_addr)
 135 {
 136         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 137         int i, j;
 138
 139         memset(perm_addr, 0xff, MAX_ADDR_LEN);
 140
 141         for (i = 0; i < netdev->addr_len; i++)
 142                 perm_addr[i] = adapter->hw.mac.perm_addr[i];
 143
 144         switch (adapter->hw.mac.type) {
 145         case ixgbe_mac_82599EB:
 146         case ixgbe_mac_X540:
 147                 for (j = 0; j < netdev->addr_len; j++, i++)
 148                         perm_addr[i] = adapter->hw.mac.san_addr[j];
 149                 break;
 150         default:
 151                 break;
 152         }
 153 }
 154
 155 static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 156                                          u8 prio, u8 bwg_id, u8 bw_pct,
 157                                          u8 up_map)
 158 {
 159         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 160
 161         /* Abort a bad configuration */
 162         if (ffs(up_map) > adapter->dcb_cfg.num_tcs.pg_tcs)
 163                 return;
 164
 165         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 166                 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio;
 167         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 168                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id;
 169         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 170                 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent =
 171                         bw_pct;
 172         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 173                 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap =
 174                         up_map;
 175
 176         if ((adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type !=
 177              adapter->dcb_cfg.tc_config[tc].path[0].prio_type) ||
 178             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id !=
 179              adapter->dcb_cfg.tc_config[tc].path[0].bwg_id) ||
 180             (adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent !=
 181              adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent) ||
 182             (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 183              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap))
 184                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 185
 186         if (adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap !=
 187              adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap)
 188                 adapter->dcb_set_bitmap |= BIT_PFC;
 189 }
 190
 191 static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 192                                           u8 bw_pct)
 193 {
 194         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 195
 196         adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct;
 197
 198         if (adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] !=
 199             adapter->dcb_cfg.bw_percentage[0][bwg_id])
 200                 adapter->dcb_set_bitmap |= BIT_PG_TX;
 201 }
 202
 203 static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 204                                          u8 prio, u8 bwg_id, u8 bw_pct,
 205                                          u8 up_map)
 206 {
 207         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 208
 209         /* Abort bad configurations */
 210         if (ffs(up_map) > adapter->dcb_cfg.num_tcs.pg_tcs)
 211                 return;
 212
 213         if (prio != DCB_ATTR_VALUE_UNDEFINED)
 214                 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio;
 215         if (bwg_id != DCB_ATTR_VALUE_UNDEFINED)
 216                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id;
 217         if (bw_pct != DCB_ATTR_VALUE_UNDEFINED)
 218                 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent =
 219                         bw_pct;
 220         if (up_map != DCB_ATTR_VALUE_UNDEFINED)
 221                 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap =
 222                         up_map;
 223
 224         if ((adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type !=
 225              adapter->dcb_cfg.tc_config[tc].path[1].prio_type) ||
 226             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id !=
 227              adapter->dcb_cfg.tc_config[tc].path[1].bwg_id) ||
 228             (adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent !=
 229              adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent) ||
 230             (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 231              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap))
 232                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 233
 234         if (adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap !=
 235              adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap)
 236                 adapter->dcb_set_bitmap |= BIT_PFC;
 237 }
 238
 239 static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 240                                           u8 bw_pct)
 241 {
 242         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 243
 244         adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct;
 245
 246         if (adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] !=
 247             adapter->dcb_cfg.bw_percentage[1][bwg_id])
 248                 adapter->dcb_set_bitmap |= BIT_PG_RX;
 249 }
 250
 251 static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc,
 252                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 253                                          u8 *up_map)
 254 {
 255         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 256
 257         *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type;
 258         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id;
 259         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent;
 260         *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap;
 261 }
 262
 263 static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id,
 264                                           u8 *bw_pct)
 265 {
 266         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 267
 268         *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id];
 269 }
 270
 271 static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc,
 272                                          u8 *prio, u8 *bwg_id, u8 *bw_pct,
 273                                          u8 *up_map)
 274 {
 275         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 276
 277         *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type;
 278         *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id;
 279         *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent;
 280         *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap;
 281 }
 282
 283 static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id,
 284                                           u8 *bw_pct)
 285 {
 286         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 287
 288         *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id];
 289 }
 290
 291 static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority,
 292                                     u8 setting)
 293 {
 294         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 295
 296         adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting;
 297         if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc !=
 298             adapter->dcb_cfg.tc_config[priority].dcb_pfc) {
 299                 adapter->dcb_set_bitmap |= BIT_PFC;
 300                 adapter->temp_dcb_cfg.pfc_mode_enable = true;
 301         }
 302 }
 303
 304 static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority,
 305                                     u8 *setting)
 306 {
 307         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 308
 309         *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc;
 310 }
 311
 312 static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
 313 {
 314         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 315         int ret, i;
 316 #ifdef IXGBE_FCOE
 317         struct dcb_app app = {
 318                               .selector = DCB_APP_IDTYPE_ETHTYPE,
 319                               .protocol = ETH_P_FCOE,
 320                              };
 321         u8 up;
 322
 323         /* In IEEE mode, use the IEEE Ethertype selector value */
 324         if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) {
 325                 app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE;
 326                 up = dcb_ieee_getapp_mask(netdev, &app);
 327         } else {
 328                 up = dcb_getapp(netdev, &app);
 329         }
 330 #endif
 331
 332         /* Fail command if not in CEE mode */
 333         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 334                 return 1;
 335
 336         ret = ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, &adapter->dcb_cfg,
 337                                  MAX_TRAFFIC_CLASS);
 338         if (ret)
 339                 return DCB_NO_HW_CHG;
 340
 341 #ifdef IXGBE_FCOE
 342         if (up && !(up & (1 << adapter->fcoe.up)))
 343                 adapter->dcb_set_bitmap |= BIT_APP_UPCHG;
 344
 345         /*
 346          * Only take down the adapter if an app change occurred. FCoE
 347          * may shuffle tx rings in this case and this can not be done
 348          * without a reset currently.
 349          */
 350         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 351                 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state))
 352                         usleep_range(1000, 2000);
 353
 354                 adapter->fcoe.up = ffs(up) - 1;
 355
 356                 if (netif_running(netdev))
 357                         netdev->netdev_ops->ndo_stop(netdev);
 358                 ixgbe_clear_interrupt_scheme(adapter);
 359         }
 360 #endif
 361
 362         if (adapter->dcb_cfg.pfc_mode_enable) {
 363                 switch (adapter->hw.mac.type) {
 364                 case ixgbe_mac_82599EB:
 365                 case ixgbe_mac_X540:
 366                         if (adapter->hw.fc.current_mode != ixgbe_fc_pfc)
 367                                 adapter->last_lfc_mode =
 368                                                   adapter->hw.fc.current_mode;
 369                         break;
 370                 default:
 371                         break;
 372                 }
 373                 adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
 374         } else {
 375                 switch (adapter->hw.mac.type) {
 376                 case ixgbe_mac_82598EB:
 377                         adapter->hw.fc.requested_mode = ixgbe_fc_none;
 378                         break;
 379                 case ixgbe_mac_82599EB:
 380                 case ixgbe_mac_X540:
 381                         adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
 382                         break;
 383                 default:
 384                         break;
 385                 }
 386         }
 387
 388 #ifdef IXGBE_FCOE
 389         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) {
 390                 ixgbe_init_interrupt_scheme(adapter);
 391                 if (netif_running(netdev))
 392                         netdev->netdev_ops->ndo_open(netdev);
 393                 ret = DCB_HW_CHG_RST;
 394         }
 395 #endif
 396
 397         if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) {
 398                 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS];
 399                 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS];
 400                 /* Priority to TC mapping in CEE case default to 1:1 */
 401                 u8 prio_tc[MAX_USER_PRIORITY];
 402                 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
 403
 404 #ifdef IXGBE_FCOE
 405                 if (adapter->netdev->features & NETIF_F_FCOE_MTU)
 406                         max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
 407 #endif
 408
 409                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
 410                                                max_frame, DCB_TX_CONFIG);
 411                 ixgbe_dcb_calculate_tc_credits(&adapter->hw, &adapter->dcb_cfg,
 412                                                max_frame, DCB_RX_CONFIG);
 413
 414                 ixgbe_dcb_unpack_refill(&adapter->dcb_cfg,
 415                                         DCB_TX_CONFIG, refill);
 416                 ixgbe_dcb_unpack_max(&adapter->dcb_cfg, max);
 417                 ixgbe_dcb_unpack_bwgid(&adapter->dcb_cfg,
 418                                        DCB_TX_CONFIG, bwg_id);
 419                 ixgbe_dcb_unpack_prio(&adapter->dcb_cfg,
 420                                       DCB_TX_CONFIG, prio_type);
 421                 ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
 422                                      DCB_TX_CONFIG, prio_tc);
 423
 424                 ixgbe_dcb_hw_ets_config(&adapter->hw, refill, max,
 425                                         bwg_id, prio_type, prio_tc);
 426
 427                 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 428                         netdev_set_prio_tc_map(netdev, i, prio_tc[i]);
 429         }
 430
 431         if (adapter->dcb_set_bitmap & BIT_PFC) {
 432                 u8 pfc_en;
 433                 u8 prio_tc[MAX_USER_PRIORITY];
 434
 435                 ixgbe_dcb_unpack_map(&adapter->dcb_cfg,
 436                                      DCB_TX_CONFIG, prio_tc);
 437                 ixgbe_dcb_unpack_pfc(&adapter->dcb_cfg, &pfc_en);
 438                 ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc_en, prio_tc);
 439                 ret = DCB_HW_CHG;
 440         }
 441
 442         if (adapter->dcb_cfg.pfc_mode_enable)
 443                 adapter->hw.fc.current_mode = ixgbe_fc_pfc;
 444
 445         if (adapter->dcb_set_bitmap & BIT_APP_UPCHG)
 446                 clear_bit(__IXGBE_RESETTING, &adapter->state);
 447         adapter->dcb_set_bitmap = 0x00;
 448         return ret;
 449 }
 450
 451 static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap)
 452 {
 453         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 454
 455         switch (capid) {
 456         case DCB_CAP_ATTR_PG:
 457                 *cap = true;
 458                 break;
 459         case DCB_CAP_ATTR_PFC:
 460                 *cap = true;
 461                 break;
 462         case DCB_CAP_ATTR_UP2TC:
 463                 *cap = false;
 464                 break;
 465         case DCB_CAP_ATTR_PG_TCS:
 466                 *cap = 0x80;
 467                 break;
 468         case DCB_CAP_ATTR_PFC_TCS:
 469                 *cap = 0x80;
 470                 break;
 471         case DCB_CAP_ATTR_GSP:
 472                 *cap = true;
 473                 break;
 474         case DCB_CAP_ATTR_BCN:
 475                 *cap = false;
 476                 break;
 477         case DCB_CAP_ATTR_DCBX:
 478                 *cap = adapter->dcbx_cap;
 479                 break;
 480         default:
 481                 *cap = false;
 482                 break;
 483         }
 484
 485         return 0;
 486 }
 487
 488 static u8 ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num)
 489 {
 490         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 491         u8 rval = 0;
 492
 493         if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
 494                 switch (tcid) {
 495                 case DCB_NUMTCS_ATTR_PG:
 496                         *num = adapter->dcb_cfg.num_tcs.pg_tcs;
 497                         break;
 498                 case DCB_NUMTCS_ATTR_PFC:
 499                         *num = adapter->dcb_cfg.num_tcs.pfc_tcs;
 500                         break;
 501                 default:
 502                         rval = -EINVAL;
 503                         break;
 504                 }
 505         } else {
 506                 rval = -EINVAL;
 507         }
 508
 509         return rval;
 510 }
 511
 512 static u8 ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num)
 513 {
 514         return -EINVAL;
 515 }
 516
 517 static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
 518 {
 519         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 520
 521         return adapter->dcb_cfg.pfc_mode_enable;
 522 }
 523
 524 static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
 525 {
 526         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 527
 528         adapter->temp_dcb_cfg.pfc_mode_enable = state;
 529         if (adapter->temp_dcb_cfg.pfc_mode_enable !=
 530                 adapter->dcb_cfg.pfc_mode_enable)
 531                 adapter->dcb_set_bitmap |= BIT_PFC;
 532 }
 533
 534 /**
 535  * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority
 536  * @netdev : the corresponding netdev
 537  * @idtype : identifies the id as ether type or TCP/UDP port number
 538  * @id: id is either ether type or TCP/UDP port number
 539  *
 540  * Returns : on success, returns a non-zero 802.1p user priority bitmap
 541  * otherwise returns 0 as the invalid user priority bitmap to indicate an
 542  * error.
 543  */
 544 static u8 ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id)
 545 {
 546         struct ixgbe_adapter *adapter = netdev_priv(netdev);
 547         struct dcb_app app = {
 548                                 .selector = idtype,
 549                                 .protocol = id,
 550                              };
 551
 552         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE))
 553                 return 0;
 554
 555         return dcb_getapp(netdev, &app);
 556 }
 557
 558 static int ixgbe_dcbnl_ieee_getets(struct net_device *dev,
 559                                    struct ieee_ets *ets)
 560 {
 561         struct ixgbe_adapter *adapter = netdev_priv(dev);
 562         struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets;
 563
 564         ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs;
 565
 566         /* No IEEE PFC settings available */
 567         if (!my_ets)
 568                 return 0;
 569
 570         ets->cbs = my_ets->cbs;
 571         memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
 572         memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
 573         memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
 574         memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
 575         return 0;
 576 }
 577
 578 static int ixgbe_dcbnl_ieee_setets(struct net_device *dev,
 579                                    struct ieee_ets *ets)
 580 {
 581         struct ixgbe_adapter *adapter = netdev_priv(dev);
 582         int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN;
 583         int i;
 584         __u8 max_tc = 0;
 585
 586         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 587                 return -EINVAL;
 588
 589         if (!adapter->ixgbe_ieee_ets) {
 590                 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets),
 591                                                   GFP_KERNEL);
 592                 if (!adapter->ixgbe_ieee_ets)
 593                         return -ENOMEM;
 594         }
 595
 596         memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets));
 597
 598         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
 599                 if (ets->prio_tc[i] > max_tc)
 600                         max_tc = ets->prio_tc[i];
 601         }
 602
 603         if (max_tc)
 604                 max_tc++;
 605
 606         if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs)
 607                 return -EINVAL;
 608
 609         if (max_tc != netdev_get_num_tc(dev))
 610                 ixgbe_setup_tc(dev, max_tc);
 611
 612         for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
 613                 netdev_set_prio_tc_map(dev, i, ets->prio_tc[i]);
 614
 615         return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame);
 616 }
 617
 618 static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev,
 619                                    struct ieee_pfc *pfc)
 620 {
 621         struct ixgbe_adapter *adapter = netdev_priv(dev);
 622         struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc;
 623         int i;
 624
 625         pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs;
 626
 627         /* No IEEE PFC settings available */
 628         if (!my_pfc)
 629                 return 0;
 630
 631         pfc->pfc_en = my_pfc->pfc_en;
 632         pfc->mbc = my_pfc->mbc;
 633         pfc->delay = my_pfc->delay;
 634
 635         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
 636                 pfc->requests[i] = adapter->stats.pxoffrxc[i];
 637                 pfc->indications[i] = adapter->stats.pxofftxc[i];
 638         }
 639
 640         return 0;
 641 }
 642
 643 static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev,
 644                                    struct ieee_pfc *pfc)
 645 {
 646         struct ixgbe_adapter *adapter = netdev_priv(dev);
 647         u8 *prio_tc;
 648
 649         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 650                 return -EINVAL;
 651
 652         if (!adapter->ixgbe_ieee_pfc) {
 653                 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc),
 654                                                   GFP_KERNEL);
 655                 if (!adapter->ixgbe_ieee_pfc)
 656                         return -ENOMEM;
 657         }
 658
 659         prio_tc = adapter->ixgbe_ieee_ets->prio_tc;
 660         memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc));
 661         return ixgbe_dcb_hw_pfc_config(&adapter->hw, pfc->pfc_en, prio_tc);
 662 }
 663
 664 #ifdef IXGBE_FCOE
 665 static void ixgbe_dcbnl_devreset(struct net_device *dev)
 666 {
 667         struct ixgbe_adapter *adapter = netdev_priv(dev);
 668
 669         if (netif_running(dev))
 670                 dev->netdev_ops->ndo_stop(dev);
 671
 672         ixgbe_clear_interrupt_scheme(adapter);
 673         ixgbe_init_interrupt_scheme(adapter);
 674
 675         if (netif_running(dev))
 676                 dev->netdev_ops->ndo_open(dev);
 677 }
 678 #endif
 679
 680 static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev,
 681                                    struct dcb_app *app)
 682 {
 683         struct ixgbe_adapter *adapter = netdev_priv(dev);
 684         int err = -EINVAL;
 685
 686         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 687                 return err;
 688
 689         err = dcb_ieee_setapp(dev, app);
 690
 691 #ifdef IXGBE_FCOE
 692         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 693             app->protocol == ETH_P_FCOE) {
 694                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 695
 696                 if (app_mask & (1 << adapter->fcoe.up))
 697                         return err;
 698
 699                 adapter->fcoe.up = app->priority;
 700                 ixgbe_dcbnl_devreset(dev);
 701         }
 702 #endif
 703         return 0;
 704 }
 705
 706 static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev,
 707                                    struct dcb_app *app)
 708 {
 709         struct ixgbe_adapter *adapter = netdev_priv(dev);
 710         int err;
 711
 712         if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE))
 713                 return -EINVAL;
 714
 715         err = dcb_ieee_delapp(dev, app);
 716
 717 #ifdef IXGBE_FCOE
 718         if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
 719             app->protocol == ETH_P_FCOE) {
 720                 u8 app_mask = dcb_ieee_getapp_mask(dev, app);
 721
 722                 if (app_mask & (1 << adapter->fcoe.up))
 723                         return err;
 724
 725                 adapter->fcoe.up = app_mask ?
 726                                    ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC;
 727                 ixgbe_dcbnl_devreset(dev);
 728         }
 729 #endif
 730         return err;
 731 }
 732
 733 static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev)
 734 {
 735         struct ixgbe_adapter *adapter = netdev_priv(dev);
 736         return adapter->dcbx_cap;
 737 }
 738
 739 static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode)
 740 {
 741         struct ixgbe_adapter *adapter = netdev_priv(dev);
 742         struct ieee_ets ets = {0};
 743         struct ieee_pfc pfc = {0};
 744
 745         /* no support for LLD_MANAGED modes or CEE+IEEE */
 746         if ((mode & DCB_CAP_DCBX_LLD_MANAGED) ||
 747             ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) ||
 748             !(mode & DCB_CAP_DCBX_HOST))
 749                 return 1;
 750
 751         if (mode == adapter->dcbx_cap)
 752                 return 0;
 753
 754         adapter->dcbx_cap = mode;
 755
 756         /* ETS and PFC defaults */
 757         ets.ets_cap = 8;
 758         pfc.pfc_cap = 8;
 759
 760         if (mode & DCB_CAP_DCBX_VER_IEEE) {
 761                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 762                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 763         } else if (mode & DCB_CAP_DCBX_VER_CEE) {
 764                 adapter->dcb_set_bitmap |= (BIT_PFC & BIT_PG_TX & BIT_PG_RX);
 765                 ixgbe_dcbnl_set_all(dev);
 766         } else {
 767                 /* Drop into single TC mode strict priority as this
 768                  * indicates CEE and IEEE versions are disabled
 769                  */
 770                 ixgbe_dcbnl_ieee_setets(dev, &ets);
 771                 ixgbe_dcbnl_ieee_setpfc(dev, &pfc);
 772                 ixgbe_setup_tc(dev, 0);
 773         }
 774
 775         return 0;
 776 }
 777
 778 const struct dcbnl_rtnl_ops dcbnl_ops = {
 779         .ieee_getets    = ixgbe_dcbnl_ieee_getets,
 780         .ieee_setets    = ixgbe_dcbnl_ieee_setets,
 781         .ieee_getpfc    = ixgbe_dcbnl_ieee_getpfc,
 782         .ieee_setpfc    = ixgbe_dcbnl_ieee_setpfc,
 783         .ieee_setapp    = ixgbe_dcbnl_ieee_setapp,
 784         .ieee_delapp    = ixgbe_dcbnl_ieee_delapp,
 785         .getstate       = ixgbe_dcbnl_get_state,
 786         .setstate       = ixgbe_dcbnl_set_state,
 787         .getpermhwaddr  = ixgbe_dcbnl_get_perm_hw_addr,
 788         .setpgtccfgtx   = ixgbe_dcbnl_set_pg_tc_cfg_tx,
 789         .setpgbwgcfgtx  = ixgbe_dcbnl_set_pg_bwg_cfg_tx,
 790         .setpgtccfgrx   = ixgbe_dcbnl_set_pg_tc_cfg_rx,
 791         .setpgbwgcfgrx  = ixgbe_dcbnl_set_pg_bwg_cfg_rx,
 792         .getpgtccfgtx   = ixgbe_dcbnl_get_pg_tc_cfg_tx,
 793         .getpgbwgcfgtx  = ixgbe_dcbnl_get_pg_bwg_cfg_tx,
 794         .getpgtccfgrx   = ixgbe_dcbnl_get_pg_tc_cfg_rx,
 795         .getpgbwgcfgrx  = ixgbe_dcbnl_get_pg_bwg_cfg_rx,
 796         .setpfccfg      = ixgbe_dcbnl_set_pfc_cfg,
 797         .getpfccfg      = ixgbe_dcbnl_get_pfc_cfg,
 798         .setall         = ixgbe_dcbnl_set_all,
 799         .getcap         = ixgbe_dcbnl_getcap,
 800         .getnumtcs      = ixgbe_dcbnl_getnumtcs,
 801         .setnumtcs      = ixgbe_dcbnl_setnumtcs,
 802         .getpfcstate    = ixgbe_dcbnl_getpfcstate,
 803         .setpfcstate    = ixgbe_dcbnl_setpfcstate,
 804         .getapp         = ixgbe_dcbnl_getapp,
 805         .getdcbx        = ixgbe_dcbnl_getdcbx,
 806         .setdcbx        = ixgbe_dcbnl_setdcbx,
 807 };