From a469a5938d1fd98e50119893f22541fe6e269f02 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Mon, 28 Aug 2023 13:04:10 +0300 Subject: wifi: mac80211: add support for mld in ieee80211_chswitch_done This allows to finalize the CSA per link. In case the switch didn't work, tear down the MLD connection. Also pass the ieee80211_bss_conf to post_channel_switch to let the driver know which link completed the switch. Signed-off-by: Emmanuel Grumbach Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230828130311.3d3eacc88436.Ic2d14e2285aa1646216a56806cfd4a8d0054437c@changeid Signed-off-by: Johannes Berg --- net/mac80211/cfg.c | 35 +++++++++++++++++++---------------- net/mac80211/driver-ops.h | 6 ++++-- net/mac80211/mlme.c | 27 ++++++++++++++++++--------- net/mac80211/trace.h | 11 +++++++---- 4 files changed, 48 insertions(+), 31 deletions(-) (limited to 'net') diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 851d6ed68367..490ee6f52d6e 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -3590,8 +3590,9 @@ static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata, return 0; } -static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) +static int __ieee80211_csa_finalize(struct ieee80211_link_data *link_data) { + struct ieee80211_sub_if_data *sdata = link_data->sdata; struct ieee80211_local *local = sdata->local; u64 changed = 0; int err; @@ -3605,20 +3606,20 @@ static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) * completed successfully */ - if (sdata->deflink.reserved_chanctx) { + if (link_data->reserved_chanctx) { /* * with multi-vif csa driver may call ieee80211_csa_finish() * many times while waiting for other interfaces to use their * reservations */ - if (sdata->deflink.reserved_ready) + if (link_data->reserved_ready) return 0; return ieee80211_link_use_reserved_context(&sdata->deflink); } if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef, - &sdata->deflink.csa_chandef)) + &link_data->csa_chandef)) return -EINVAL; sdata->vif.bss_conf.csa_active = false; @@ -3635,25 +3636,27 @@ static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) ieee80211_link_info_change_notify(sdata, &sdata->deflink, changed); - if (sdata->deflink.csa_block_tx) { + if (link_data->csa_block_tx) { ieee80211_wake_vif_queues(local, sdata, IEEE80211_QUEUE_STOP_REASON_CSA); - sdata->deflink.csa_block_tx = false; + link_data->csa_block_tx = false; } - err = drv_post_channel_switch(sdata); + err = drv_post_channel_switch(link_data); if (err) return err; - cfg80211_ch_switch_notify(sdata->dev, &sdata->deflink.csa_chandef, 0, + cfg80211_ch_switch_notify(sdata->dev, &link_data->csa_chandef, 0, sdata->vif.bss_conf.eht_puncturing); return 0; } -static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) +static void ieee80211_csa_finalize(struct ieee80211_link_data *link_data) { - if (__ieee80211_csa_finalize(sdata)) { + struct ieee80211_sub_if_data *sdata = link_data->sdata; + + if (__ieee80211_csa_finalize(link_data)) { sdata_info(sdata, "failed to finalize CSA, disconnecting\n"); cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev, GFP_KERNEL); @@ -3662,21 +3665,21 @@ static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata) void ieee80211_csa_finalize_work(struct wiphy *wiphy, struct wiphy_work *work) { - struct ieee80211_sub_if_data *sdata = - container_of(work, struct ieee80211_sub_if_data, - deflink.csa_finalize_work); + struct ieee80211_link_data *link = + container_of(work, struct ieee80211_link_data, csa_finalize_work); + struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; lockdep_assert_wiphy(local->hw.wiphy); /* AP might have been stopped while waiting for the lock. */ - if (!sdata->vif.bss_conf.csa_active) + if (!link->conf->csa_active) return; if (!ieee80211_sdata_running(sdata)) return; - ieee80211_csa_finalize(sdata); + ieee80211_csa_finalize(link); } static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata, @@ -3919,7 +3922,7 @@ __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev, drv_channel_switch_beacon(sdata, ¶ms->chandef); } else { /* if the beacon didn't change, we can finalize immediately */ - ieee80211_csa_finalize(sdata); + ieee80211_csa_finalize(&sdata->deflink); } out: diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index 554c7aa10cc2..77048b9065e6 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -1126,8 +1126,9 @@ drv_pre_channel_switch(struct ieee80211_sub_if_data *sdata, } static inline int -drv_post_channel_switch(struct ieee80211_sub_if_data *sdata) +drv_post_channel_switch(struct ieee80211_link_data *link) { + struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; int ret = 0; @@ -1139,7 +1140,8 @@ drv_post_channel_switch(struct ieee80211_sub_if_data *sdata) trace_drv_post_channel_switch(local, sdata); if (local->ops->post_channel_switch) - ret = local->ops->post_channel_switch(&local->hw, &sdata->vif); + ret = local->ops->post_channel_switch(&local->hw, &sdata->vif, + link->conf); trace_drv_return_int(local, ret); return ret; } diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 6d0a29749e8c..0f295c5403b3 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -1763,7 +1763,7 @@ static void ieee80211_chswitch_post_beacon(struct ieee80211_link_data *link) */ link->u.mgd.beacon_crc_valid = false; - ret = drv_post_channel_switch(sdata); + ret = drv_post_channel_switch(link); if (ret) { sdata_info(sdata, "driver post channel switch failed, disconnecting\n"); @@ -1775,25 +1775,34 @@ static void ieee80211_chswitch_post_beacon(struct ieee80211_link_data *link) cfg80211_ch_switch_notify(sdata->dev, &link->reserved_chandef, 0, 0); } -void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) +void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success, + unsigned int link_id) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); - struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - if (WARN_ON(ieee80211_vif_is_mld(&sdata->vif))) - success = false; + trace_api_chswitch_done(sdata, success, link_id); + + rcu_read_lock(); - trace_api_chswitch_done(sdata, success); if (!success) { sdata_info(sdata, "driver channel switch failed, disconnecting\n"); wiphy_work_queue(sdata->local->hw.wiphy, - &ifmgd->csa_connection_drop_work); + &sdata->u.mgd.csa_connection_drop_work); } else { + struct ieee80211_link_data *link = + rcu_dereference(sdata->link[link_id]); + + if (WARN_ON(!link)) { + rcu_read_unlock(); + return; + } + wiphy_delayed_work_queue(sdata->local->hw.wiphy, - &sdata->deflink.u.mgd.chswitch_work, - 0); + &link->u.mgd.chswitch_work, 0); } + + rcu_read_unlock(); } EXPORT_SYMBOL(ieee80211_chswitch_done); diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h index b8c53b4a710b..032718d5b298 100644 --- a/net/mac80211/trace.h +++ b/net/mac80211/trace.h @@ -2839,23 +2839,26 @@ TRACE_EVENT(api_sta_block_awake, ); TRACE_EVENT(api_chswitch_done, - TP_PROTO(struct ieee80211_sub_if_data *sdata, bool success), + TP_PROTO(struct ieee80211_sub_if_data *sdata, bool success, + unsigned int link_id), - TP_ARGS(sdata, success), + TP_ARGS(sdata, success, link_id), TP_STRUCT__entry( VIF_ENTRY __field(bool, success) + __field(unsigned int, link_id) ), TP_fast_assign( VIF_ASSIGN; __entry->success = success; + __entry->link_id = link_id; ), TP_printk( - VIF_PR_FMT " success=%d", - VIF_PR_ARG, __entry->success + VIF_PR_FMT " success=%d link_id=%d", + VIF_PR_ARG, __entry->success, __entry->link_id ) ); -- cgit