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mac80211: mesh: Allow following CSA to DFS channels if userspace handles it

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If userspace has flagged support for DFS earlier, then we can follow CSA
to DFS channels. So instead of rejecting the switch, allow it to happen
if the flag has been set during mesh setup.

Signed-off-by: Benjamin Berg <benjamin@sipsolutions.net>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Benjamin Berg
2017-05-16 11:23:13 +02:00
committed by Johannes Berg
parent 8d9de16f80
commit 0ab2e55d33
3 changed files with 15 additions and 3 deletions
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15
net/mac80211/mesh.c
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@@ -978,7 +978,9 @@ ieee80211_mesh_process_chnswitch(struct ieee80211_sub_if_data *sdata,
params.count = csa_ie.count;
if (!cfg80211_chandef_usable(sdata->local->hw.wiphy, &params.chandef,
IEEE80211_CHAN_DISABLED)) {
IEEE80211_CHAN_DISABLED) ||
!cfg80211_reg_can_beacon(sdata->local->hw.wiphy, &params.chandef,
NL80211_IFTYPE_MESH_POINT)) {
sdata_info(sdata,
"mesh STA %pM switches to unsupported channel (%d MHz, width:%d, CF1/2: %d/%d MHz), aborting\n",
sdata->vif.addr,
@@ -994,9 +996,16 @@ ieee80211_mesh_process_chnswitch(struct ieee80211_sub_if_data *sdata,
NL80211_IFTYPE_MESH_POINT);
if (err < 0)
return false;
if (err > 0)
/* TODO: DFS not (yet) supported */
if (err > 0 && !ifmsh->userspace_handles_dfs) {
sdata_info(sdata,
"mesh STA %pM switches to channel requiring DFS (%d MHz, width:%d, CF1/2: %d/%d MHz), aborting\n",
sdata->vif.addr,
params.chandef.chan->center_freq,
params.chandef.width,
params.chandef.center_freq1,
params.chandef.center_freq2);
return false;
}
params.radar_required = err;