| From: John Crispin <john@phrozen.org> |
| Date: Thu, 24 Feb 2022 12:54:59 +0100 |
| Subject: [PATCH] mac80211: MBSSID channel switch |
| |
| Trigger ieee80211_csa_finish() on the non-transmitting interfaces |
| when channel switch concludes on the transmitting interface. |
| |
| Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org> |
| Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> |
| Co-developed-by: Aloka Dixit <alokad@codeaurora.org> |
| Signed-off-by: Aloka Dixit <alokad@codeaurora.org> |
| Signed-off-by: John Crispin <john@phrozen.org> |
| Link: https://lore.kernel.org/r/6fde4d7f9fa387494f46a7aa4a584478dcda06f1.1645702516.git.lorenzo@kernel.org |
| Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
| --- |
| |
| --- a/net/mac80211/cfg.c |
| +++ b/net/mac80211/cfg.c |
| @@ -3247,9 +3247,31 @@ cfg80211_beacon_dup(struct cfg80211_beac |
| void ieee80211_csa_finish(struct ieee80211_vif *vif) |
| { |
| struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
| + struct ieee80211_local *local = sdata->local; |
| |
| - ieee80211_queue_work(&sdata->local->hw, |
| - &sdata->csa_finalize_work); |
| + rcu_read_lock(); |
| + |
| + if (vif->mbssid_tx_vif == vif) { |
| + /* Trigger ieee80211_csa_finish() on the non-transmitting |
| + * interfaces when channel switch is received on |
| + * transmitting interface |
| + */ |
| + struct ieee80211_sub_if_data *iter; |
| + |
| + list_for_each_entry_rcu(iter, &local->interfaces, list) { |
| + if (!ieee80211_sdata_running(iter)) |
| + continue; |
| + |
| + if (iter == sdata || iter->vif.mbssid_tx_vif != vif) |
| + continue; |
| + |
| + ieee80211_queue_work(&iter->local->hw, |
| + &iter->csa_finalize_work); |
| + } |
| + } |
| + ieee80211_queue_work(&local->hw, &sdata->csa_finalize_work); |
| + |
| + rcu_read_unlock(); |
| } |
| EXPORT_SYMBOL(ieee80211_csa_finish); |
| |