package/network/utils/iw/patches/303-mesh_add_VHT80.patch

   1 From: Sven Eckelmann <sven@open-mesh.com>
   2 Date: Tue, 24 Nov 2015 17:55:22 +0100
   3 Subject: iw: add VHT80 support for 802.11s
   4
   5 Support next to the non-HT/HT channel widths like HT20 or NOHT also VHT80
   6 channels during the mesh join
   7
   8     iw dev mesh0 mesh join "meshnet" freq 5180 80MHz
   9
  10 Signed-off-by: Sven Eckelmann <sven@open-mesh.com>
  11 ---
  12  ibss.c | 33 ---------------------------------
  13  iw.h   |  9 +++++++++
  14  mesh.c | 16 ++++++++--------
  15  util.c | 26 ++++++++++++++++++++++++++
  16  4 files changed, 43 insertions(+), 41 deletions(-)
  17
  18 --- a/ibss.c
  19 +++ b/ibss.c
  20 @@ -16,39 +16,6 @@
  21
  22  SECTION(ibss);
  23
  24 -struct chanmode {
  25 -       const char *name;
  26 -       unsigned int width;
  27 -       int freq1_diff;
  28 -       int chantype; /* for older kernel */
  29 -};
  30 -
  31 -static int get_cf1(const struct chanmode *chanmode, unsigned long freq)
  32 -{
  33 -       int cf1 = freq, j;
  34 -       int vht80[] = { 5180, 5260, 5500, 5580, 5660, 5745 };
  35 -
  36 -       switch (chanmode->width) {
  37 -       case NL80211_CHAN_WIDTH_80:
  38 -               /* setup center_freq1 */
  39 -               for (j = 0; j < ARRAY_SIZE(vht80); j++) {
  40 -                       if (freq >= vht80[j] && freq < vht80[j] + 80)
  41 -                               break;
  42 -               }
  43 -
  44 -               if (j == ARRAY_SIZE(vht80))
  45 -                       break;
  46 -
  47 -               cf1 = vht80[j] + 30;
  48 -               break;
  49 -       default:
  50 -               cf1 = freq + chanmode->freq1_diff;
  51 -               break;
  52 -       }
  53 -
  54 -       return cf1;
  55 -}
  56 -
  57  static int join_ibss(struct nl80211_state *state,
  58                      struct nl_msg *msg,
  59                      int argc, char **argv,
  60 --- a/iw.h
  61 +++ b/iw.h
  62 @@ -59,6 +59,13 @@ struct cmd {
  63         const struct cmd *parent;
  64  };
  65
  66 +struct chanmode {
  67 +       const char *name;
  68 +       unsigned int width;
  69 +       int freq1_diff;
  70 +       int chantype; /* for older kernel */
  71 +};
  72 +
  73  #define ARRAY_SIZE(ar) (sizeof(ar)/sizeof(ar[0]))
  74  #define DIV_ROUND_UP(x, y) (((x) + (y - 1)) / (y))
  75
  76 @@ -174,6 +181,8 @@ void print_ies(unsigned char *ie, int ie
  77  void parse_bitrate(struct nlattr *bitrate_attr, char *buf, int buflen);
  78  void iw_hexdump(const char *prefix, const __u8 *data, size_t len);
  79
  80 +int get_cf1(const struct chanmode *chanmode, unsigned long freq);
  81 +
  82  #define SCHED_SCAN_OPTIONS "interval <in_msecs> [delay <in_secs>] " \
  83         "[freqs <freq>+] [matches [ssid <ssid>]+]] [active [ssid <ssid>]+|passive] [randomise[=<addr>/<mask>]]"
  84  int parse_sched_scan(struct nl_msg *msg, int *argc, char ***argv);
  85 --- a/mesh.c
  86 +++ b/mesh.c
  87 @@ -439,12 +439,8 @@ static int join_mesh(struct nl80211_stat
  88         int bintval, dtim_period, i, n_rates = 0;
  89         char *end, *value = NULL, *sptr = NULL;
  90         unsigned long freq = 0;
  91 -       static const struct {
  92 -               const char *name;
  93 -               unsigned int width;
  94 -               int freq1_diff;
  95 -               int chantype; /* for older kernel */
  96 -       } *chanmode_selected = NULL, chanmode[] = {
  97 +       const struct chanmode *chanmode_selected = NULL;
  98 +       static const struct chanmode chanmode[] = {
  99                 { .name = "HT20",
 100                   .width = NL80211_CHAN_WIDTH_20,
 101                   .freq1_diff = 0,
 102 @@ -461,6 +457,10 @@ static int join_mesh(struct nl80211_stat
 103                   .width = NL80211_CHAN_WIDTH_20_NOHT,
 104                   .freq1_diff = 0,
 105                   .chantype = NL80211_CHAN_NO_HT },
 106 +               { .name = "80MHz",
 107 +                 .width = NL80211_CHAN_WIDTH_80,
 108 +                 .freq1_diff = 0,
 109 +                 .chantype = -1 },
 110         };
 111
 112         if (argc < 1)
 113 @@ -497,7 +497,7 @@ static int join_mesh(struct nl80211_stat
 114                         NLA_PUT_U32(msg, NL80211_ATTR_CHANNEL_WIDTH,
 115                                     chanmode_selected->width);
 116                         NLA_PUT_U32(msg, NL80211_ATTR_CENTER_FREQ1,
 117 -                                   freq + chanmode_selected->freq1_diff);
 118 +                                   get_cf1(chanmode_selected, freq));
 119                         if (chanmode_selected->chantype != -1)
 120                                 NLA_PUT_U32(msg,
 121                                             NL80211_ATTR_WIPHY_CHANNEL_TYPE,
 122 @@ -599,7 +599,7 @@ static int join_mesh(struct nl80211_stat
 123   nla_put_failure:
 124         return -ENOBUFS;
 125  }
 126 -COMMAND(mesh, join, "<mesh ID> [[freq <freq in MHz> <HT20|HT40+|HT40-|NOHT>]"
 127 +COMMAND(mesh, join, "<mesh ID> [[freq <freq in MHz> <HT20|HT40+|HT40-|NOHT|80MHz>]"
 128         " [basic-rates <rate in Mbps,rate2,...>]], [mcast-rate <rate in Mbps>]"
 129         " [beacon-interval <time in TUs>] [dtim-period <value>]"
 130         " [vendor_sync on|off] [<param>=<value>]*",
 131 --- a/util.c
 132 +++ b/util.c
 133 @@ -728,3 +728,29 @@ void iw_hexdump(const char *prefix, cons
 134         }
 135         printf("\n\n");
 136  }
 137 +
 138 +int get_cf1(const struct chanmode *chanmode, unsigned long freq)
 139 +{
 140 +       int cf1 = freq, j;
 141 +       int vht80[] = { 5180, 5260, 5500, 5580, 5660, 5745 };
 142 +
 143 +       switch (chanmode->width) {
 144 +       case NL80211_CHAN_WIDTH_80:
 145 +               /* setup center_freq1 */
 146 +               for (j = 0; j < ARRAY_SIZE(vht80); j++) {
 147 +                       if (freq >= vht80[j] && freq < vht80[j] + 80)
 148 +                               break;
 149 +               }
 150 +
 151 +               if (j == ARRAY_SIZE(vht80))
 152 +                       break;
 153 +
 154 +               cf1 = vht80[j] + 30;
 155 +               break;
 156 +       default:
 157 +               cf1 = freq + chanmode->freq1_diff;
 158 +               break;
 159 +       }
 160 +
 161 +       return cf1;
 162 +}