diff options
Diffstat (limited to 'net/mac80211/chan.c')
| -rw-r--r-- | net/mac80211/chan.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 3aaf5abf1acc..4bcbcf9d98b5 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -644,15 +644,39 @@ ieee80211_find_chanctx(struct ieee80211_local *local, return NULL; } -bool ieee80211_is_radar_required(struct ieee80211_local *local) +bool ieee80211_is_radar_required(struct ieee80211_local *local, + struct cfg80211_scan_request *req) { + struct wiphy *wiphy = local->hw.wiphy; struct ieee80211_link_data *link; + struct ieee80211_channel *chan; + int radio_idx; lockdep_assert_wiphy(local->hw.wiphy); + if (!req) + return false; + for_each_sdata_link(local, link) { - if (link->radar_required) - return true; + if (link->radar_required) { + if (wiphy->n_radio < 2) + return true; + + chan = link->conf->chanreq.oper.chan; + radio_idx = cfg80211_get_radio_idx_by_chan(wiphy, chan); + /* + * The radio index (radio_idx) is expected to be valid, + * as it's derived from a channel tied to a link. If + * it's invalid (i.e., negative), return true to avoid + * potential issues with radar-sensitive operations. + */ + if (radio_idx < 0) + return true; + + if (ieee80211_is_radio_idx_in_scan_req(wiphy, req, + radio_idx)) + return true; + } } return false; @@ -720,7 +744,7 @@ static int ieee80211_add_chanctx(struct ieee80211_local *local, /* turn idle off *before* setting channel -- some drivers need that */ changed = ieee80211_idle_off(local); if (changed) - ieee80211_hw_config(local, changed); + ieee80211_hw_config(local, -1, changed); err = drv_add_chanctx(local, ctx); if (err) { @@ -1381,6 +1405,7 @@ ieee80211_link_use_reserved_reassign(struct ieee80211_link_data *link) goto out; } + link->radar_required = link->reserved_radar_required; list_move(&link->assigned_chanctx_list, &new_ctx->assigned_links); rcu_assign_pointer(link_conf->chanctx_conf, &new_ctx->conf); |