package/network/services/hostapd/patches/032-mesh-implement-use-of-VHT20-config-in-mesh-mode.patch

   1 From 24fc73b2470ff79cd8c92e029ca785c8e95a204c Mon Sep 17 00:00:00 2001
   2 From: Peter Oh <peter.oh@bowerswilkins.com>
   3 Date: Wed, 18 Apr 2018 14:14:19 -0700
   4 Subject: [PATCH 2/2] mesh: implement use of VHT20 config in mesh mode
   5
   6 mesh in VHT mode is supposed to be able to use any bandwidth
   7 that 11ac supports, but we don't have a way to set VHT20
   8 although there are parameters that are supposed to be used.
   9 This patch along with the patch of
  10 "mesh: add VHT_CHANWIDTH_USE_HT to max_oper_chwidth" makes mesh
  11 available to use of any bandwidth using combination of
  12 existing parameters like below shown.
  13
  14 VHT80:
  15   default
  16   do not set any parameters
  17 VHT40:
  18   max_oper_chwidth = 0
  19 VHT20:
  20   max_oper_chwidth=0
  21   disable_ht40=1
  22 HT40:
  23   disable_vht = 1
  24 HT20:
  25   disable_ht40 = 1
  26 disable HT:
  27   disable_ht = 1
  28
  29 Signed-off-by: Peter Oh <peter.oh@bowerswilkins.com>
  30 ---
  31  wpa_supplicant/wpa_supplicant.c | 18 +++++++++++++-----
  32  1 file changed, 13 insertions(+), 5 deletions(-)
  33
  34 --- a/wpa_supplicant/wpa_supplicant.c
  35 +++ b/wpa_supplicant/wpa_supplicant.c
  36 @@ -2174,9 +2174,15 @@ void ibss_mesh_setup_freq(struct wpa_sup
  37                 if (!dfs_enabled)
  38                         return;
  39
  40 +       freq->channel = pri_chan->chan;
  41 +
  42  #ifdef CONFIG_HT_OVERRIDES
  43 -       if (ssid->disable_ht40)
  44 -               return;
  45 +       if (ssid->disable_ht40) {
  46 +               if (ssid->disable_vht)
  47 +                       return;
  48 +               else
  49 +                       goto skip_ht40;
  50 +       }
  51  #endif /* CONFIG_HT_OVERRIDES */
  52
  53         /* Check/setup HT40+/HT40- */
  54 @@ -2204,8 +2210,6 @@ void ibss_mesh_setup_freq(struct wpa_sup
  55                 if (!dfs_enabled)
  56                         return;
  57
  58 -       freq->channel = pri_chan->chan;
  59 -
  60         if (ht40 == -1) {
  61                 if (!(pri_chan->flag & HOSTAPD_CHAN_HT40MINUS))
  62                         return;
  63 @@ -2249,6 +2253,7 @@ void ibss_mesh_setup_freq(struct wpa_sup
  64                 wpa_scan_results_free(scan_res);
  65         }
  66
  67 +skip_ht40:
  68         wpa_printf(MSG_DEBUG,
  69                    "IBSS/mesh: setup freq channel %d, sec_channel_offset %d",
  70                    freq->channel, freq->sec_channel_offset);
  71 @@ -2344,7 +2349,10 @@ void ibss_mesh_setup_freq(struct wpa_sup
  72                 }
  73         } else if (ssid->max_oper_chwidth == VHT_CHANWIDTH_USE_HT) {
  74                 chwidth = VHT_CHANWIDTH_USE_HT;
  75 -               seg0 = vht80[j] + 2;
  76 +               if (ssid->disable_ht40)
  77 +                       seg0 = 0;
  78 +               else
  79 +                       seg0 = vht80[j] + 2;
  80         }
  81
  82         if (hostapd_set_freq_params(&vht_freq, mode->mode, freq->freq,