package/network/services/hostapd/patches/015-mesh-do-not-use-offchan-mgmt-tx-on-DFS.patch

   1 From 71e9c65a7c8af90a5fd11072062b596421316452 Mon Sep 17 00:00:00 2001
   2 From: Peter Oh <peter.oh@bowerswilkins.com>
   3 Date: Mon, 27 Aug 2018 14:28:46 -0700
   4 Subject: [PATCH 4/7] mesh: do not set offchanok on DFS channels in non-ETSI
   5
   6 mac80211 does not allow mgmt tx to use off channel on
   7 DFS channels in non-ETSI domain, because it will invalidate
   8 CAC result on current operating channel.
   9 (mac80211 commit: 34373d12f3cbb74960a73431138ef619d857996f)
  10 Hence don't set offchanok for mgmt tx in case of DFS channels
  11 in non-ETSI.
  12
  13 Signed-off-by: Peter Oh <peter.oh@bowerswilkins.com>
  14 ---
  15  src/drivers/driver_nl80211.c | 21 ++++++++++++++++++++-
  16  1 file changed, 20 insertions(+), 1 deletion(-)
  17
  18 --- a/src/drivers/driver_nl80211.c
  19 +++ b/src/drivers/driver_nl80211.c
  20 @@ -7411,6 +7411,10 @@ static int wpa_driver_nl80211_send_actio
  21         int ret = -1;
  22         u8 *buf;
  23         struct ieee80211_hdr *hdr;
  24 +       struct hostapd_hw_modes *modes;
  25 +       int i, offchanok = 1;
  26 +       u16 num_modes, flags;
  27 +       u8 dfs_domain;
  28
  29         wpa_printf(MSG_DEBUG, "nl80211: Send Action frame (ifindex=%d, "
  30                    "freq=%u MHz wait=%d ms no_cck=%d)",
  31 @@ -7435,6 +7439,21 @@ static int wpa_driver_nl80211_send_actio
  32                 os_memset(bss->rand_addr, 0, ETH_ALEN);
  33         }
  34
  35 +       if (is_mesh_interface(drv->nlmode)) {
  36 +               modes = nl80211_get_hw_feature_data(bss, &num_modes,
  37 +                                                   &flags, &dfs_domain);
  38 +               if (dfs_domain != HOSTAPD_DFS_REGION_ETSI &&
  39 +                   ieee80211_is_dfs(bss->freq, modes, num_modes))
  40 +                       offchanok = 0;
  41 +               if (modes) {
  42 +                       for (i = 0; i < num_modes; i++) {
  43 +                               os_free(modes[i].channels);
  44 +                               os_free(modes[i].rates);
  45 +                       }
  46 +                       os_free(modes);
  47 +               }
  48 +       }
  49 +
  50         if (is_ap_interface(drv->nlmode) &&
  51             (!(drv->capa.flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) ||
  52              (int) freq == bss->freq || drv->device_ap_sme ||
  53 @@ -7446,7 +7465,7 @@ static int wpa_driver_nl80211_send_actio
  54                 ret = nl80211_send_frame_cmd(bss, freq, wait_time, buf,
  55                                              24 + data_len,
  56                                              &drv->send_action_cookie,
  57 -                                            no_cck, 0, 1, NULL, 0);
  58 +                                            no_cck, 0, offchanok, NULL, 0);
  59
  60         os_free(buf);
  61         return ret;