diff options
| -rw-r--r-- | net/mac80211/mlme.c | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 3d5cc3dd9238..2180b1ba0e42 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1934,11 +1934,6 @@ static void ieee80211_chswitch_post_beacon(struct ieee80211_link_data *link) link->conf->csa_active = false; link->u.mgd.csa_waiting_bcn = false; - /* - * If the CSA IE is still present on the beacon after the switch, - * we need to consider it as a new CSA (possibly to self). - */ - link->u.mgd.beacon_crc_valid = false; ret = drv_post_channel_switch(link); if (ret) { @@ -2053,18 +2048,32 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, if (res < 0) goto drop_connection; - if (beacon && link->conf->csa_active && - !link->u.mgd.csa_waiting_bcn) { - if (res) + if (link->conf->csa_active) { + /* already processing - disregard action frames */ + if (!beacon) + return; + + if (link->u.mgd.csa_waiting_bcn) { + ieee80211_chswitch_post_beacon(link); + /* + * If the CSA IE is still present in the beacon after + * the switch, we need to consider it as a new CSA + * (possibly to self) - this happens by not returning + * here so we'll get to the check below. + */ + } else if (res) { ieee80211_sta_abort_chanswitch(link); - else + return; + } else { drv_channel_switch_rx_beacon(sdata, &ch_switch); - return; - } else if (link->conf->csa_active || res) { - /* disregard subsequent announcements if already processing */ - return; + return; + } } + /* nothing to do at all - no active CSA nor a new one */ + if (res) + return; + if (link->conf->chanreq.oper.chan->band != csa_ie.chanreq.oper.chan->band) { sdata_info(sdata, @@ -6293,9 +6302,6 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_link_data *link, } } - if (link->u.mgd.csa_waiting_bcn) - ieee80211_chswitch_post_beacon(link); - /* * Update beacon timing and dtim count on every beacon appearance. This * will allow the driver to use the most updated values. Do it before |