From 6030b3a469f8936d7f0f928e788f12a4fe14a4ca Mon Sep 17 00:00:00 2001 From: Aditya Kumar Singh Date: Fri, 16 Feb 2024 20:16:20 +0530 Subject: wifi: mac80211: check beacon countdown is complete on per link basis Currently, function to check if beacon countdown is complete uses deflink to fetch the beacon and check the counter. However, with MLO, there is a need to check the counter for the beacon in a particular link. Add support to use link_id in order to fetch the beacon from a particular link data. Signed-off-by: Aditya Kumar Singh Link: https://msgid.link/20240216144621.514385-2-quic_adisi@quicinc.com Signed-off-by: Johannes Berg --- net/mac80211/tx.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index f4be4af568be..6bf223e6cd1a 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -5095,9 +5095,11 @@ unlock: } EXPORT_SYMBOL(ieee80211_beacon_set_cntdwn); -bool ieee80211_beacon_cntdwn_is_complete(struct ieee80211_vif *vif) +bool ieee80211_beacon_cntdwn_is_complete(struct ieee80211_vif *vif, + unsigned int link_id) { struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); + struct ieee80211_link_data *link; struct beacon_data *beacon = NULL; u8 *beacon_data; size_t beacon_data_len; @@ -5106,9 +5108,17 @@ bool ieee80211_beacon_cntdwn_is_complete(struct ieee80211_vif *vif) if (!ieee80211_sdata_running(sdata)) return false; + if (WARN_ON(link_id >= IEEE80211_MLD_MAX_NUM_LINKS)) + return 0; + rcu_read_lock(); + + link = rcu_dereference(sdata->link[link_id]); + if (!link) + goto out; + if (vif->type == NL80211_IFTYPE_AP) { - beacon = rcu_dereference(sdata->deflink.u.ap.beacon); + beacon = rcu_dereference(link->u.ap.beacon); if (WARN_ON(!beacon || !beacon->tail)) goto out; beacon_data = beacon->tail; -- cgit v1.2.3 From d73fbaf24c5a1e0698a7a5e17d66a5100efef72a Mon Sep 17 00:00:00 2001 From: Miri Korenblit Date: Tue, 6 Feb 2024 16:54:06 +0200 Subject: wifi: mac80211: make associated BSS pointer visible to the driver Some drivers need the data in it, so move it to the link conf, which is exposed to the driver. Signed-off-by: Miri Korenblit Link: https://msgid.link/20240206164849.6fe9782b87b4.Ifbffef638f07ca7f5c2b27f40d2cf2942d21de0b@changeid [remove bss pointer from internal struct, update docs] Signed-off-by: Johannes Berg --- net/mac80211/ieee80211_i.h | 2 -- net/mac80211/mlme.c | 18 +++++++++--------- 2 files changed, 9 insertions(+), 11 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index f3edb1a148a7..4bec625a84d1 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1006,8 +1006,6 @@ struct ieee80211_link_data_managed { int mu_edca_last_param_set; u8 bss_param_ch_cnt; - - struct cfg80211_bss *bss; }; struct ieee80211_link_data_ap { diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index e1554666d706..87ffc19770b8 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -2015,7 +2015,7 @@ ieee80211_sta_process_chanswitch(struct ieee80211_link_data *link, struct ieee80211_sub_if_data *sdata = link->sdata; struct ieee80211_local *local = sdata->local; struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; - struct cfg80211_bss *cbss = link->u.mgd.bss; + struct cfg80211_bss *cbss = link->conf->bss; struct ieee80211_chanctx_conf *conf; struct ieee80211_chanctx *chanctx; enum nl80211_band current_band; @@ -2928,7 +2928,7 @@ static u64 ieee80211_link_set_associated(struct ieee80211_link_data *link, ieee80211_check_rate_mask(link); - link->u.mgd.bss = cbss; + link->conf->bss = cbss; memcpy(link->u.mgd.bssid, cbss->bssid, ETH_ALEN); if (sdata->vif.p2p || @@ -3076,7 +3076,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, ifmgd->associated = false; /* other links will be destroyed */ - sdata->deflink.u.mgd.bss = NULL; + sdata->deflink.conf->bss = NULL; sdata->deflink.smps_mode = IEEE80211_SMPS_OFF; netif_carrier_off(sdata->dev); @@ -3406,7 +3406,7 @@ static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) ieee80211_mlme_send_probe_req(sdata, sdata->vif.addr, dst, sdata->vif.cfg.ssid, sdata->vif.cfg.ssid_len, - sdata->deflink.u.mgd.bss->channel); + sdata->deflink.conf->bss->channel); } ifmgd->probe_timeout = jiffies + msecs_to_jiffies(probe_wait_ms); @@ -3489,7 +3489,7 @@ struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, return NULL; if (ifmgd->associated) - cbss = sdata->deflink.u.mgd.bss; + cbss = sdata->deflink.conf->bss; else if (ifmgd->auth_data) cbss = ifmgd->auth_data->bss; else if (ifmgd->assoc_data && ifmgd->assoc_data->link[0].bss) @@ -3568,8 +3568,8 @@ static void __ieee80211_disconnect(struct ieee80211_sub_if_data *sdata) link = sdata_dereference(sdata->link[link_id], sdata); if (!link) continue; - cfg80211_unlink_bss(local->hw.wiphy, link->u.mgd.bss); - link->u.mgd.bss = NULL; + cfg80211_unlink_bss(local->hw.wiphy, link->conf->bss); + link->conf->bss = NULL; } } @@ -6208,7 +6208,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_link_data *link, } if (!ifmgd->associated || - !ieee80211_rx_our_beacon(bssid, link->u.mgd.bss)) + !ieee80211_rx_our_beacon(bssid, link->conf->bss)) return; bssid = link->u.mgd.bssid; @@ -6235,7 +6235,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_link_data *link, */ if (!ieee80211_is_s1g_beacon(hdr->frame_control)) ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); - parse_params.bss = link->u.mgd.bss; + parse_params.bss = link->conf->bss; parse_params.filter = care_about_ies; parse_params.crc = ncrc; elems = ieee802_11_parse_elems_full(&parse_params); -- cgit v1.2.3 From ba4b1fa3128b2fbf14e167230315cbd9074b629b Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Thu, 15 Feb 2024 23:21:51 +0000 Subject: wifi: mac80211: clean up assignments to pointer cache. The assignment to pointer cache in function mesh_fast_tx_gc can be made at the declaration time rather than a later assignment. There are also 3 functions where pointer cache is being initialized at declaration time and later re-assigned again with the same value, these are redundant and can be removed. Cleans up code and three clang scan build warnings: warning: Value stored to 'cache' during its initialization is never read [deadcode.DeadStores] Signed-off-by: Colin Ian King Reviewed-by: Simon Horman Link: https://msgid.link/20240215232151.2075483-1-colin.i.king@gmail.com Signed-off-by: Johannes Berg --- net/mac80211/mesh_pathtbl.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index 735edde1bd81..91b55d6a68b9 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -600,11 +600,10 @@ unlock_sta: void mesh_fast_tx_gc(struct ieee80211_sub_if_data *sdata) { unsigned long timeout = msecs_to_jiffies(MESH_FAST_TX_CACHE_TIMEOUT); - struct mesh_tx_cache *cache; + struct mesh_tx_cache *cache = &sdata->u.mesh.tx_cache; struct ieee80211_mesh_fast_tx *entry; struct hlist_node *n; - cache = &sdata->u.mesh.tx_cache; if (atomic_read(&cache->rht.nelems) < MESH_FAST_TX_CACHE_THRESHOLD_SIZE) return; @@ -622,7 +621,6 @@ void mesh_fast_tx_flush_mpath(struct mesh_path *mpath) struct ieee80211_mesh_fast_tx *entry; struct hlist_node *n; - cache = &sdata->u.mesh.tx_cache; spin_lock_bh(&cache->walk_lock); hlist_for_each_entry_safe(entry, n, &cache->walk_head, walk_list) if (entry->mpath == mpath) @@ -637,7 +635,6 @@ void mesh_fast_tx_flush_sta(struct ieee80211_sub_if_data *sdata, struct ieee80211_mesh_fast_tx *entry; struct hlist_node *n; - cache = &sdata->u.mesh.tx_cache; spin_lock_bh(&cache->walk_lock); hlist_for_each_entry_safe(entry, n, &cache->walk_head, walk_list) if (rcu_access_pointer(entry->mpath->next_hop) == sta) @@ -651,7 +648,6 @@ void mesh_fast_tx_flush_addr(struct ieee80211_sub_if_data *sdata, struct mesh_tx_cache *cache = &sdata->u.mesh.tx_cache; struct ieee80211_mesh_fast_tx *entry; - cache = &sdata->u.mesh.tx_cache; spin_lock_bh(&cache->walk_lock); entry = rhashtable_lookup_fast(&cache->rht, addr, fast_tx_rht_params); if (entry) -- cgit v1.2.3 From 6bd14aee0bd25525ab229acd9bfe536dd8642364 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 16 Feb 2024 13:54:31 +0200 Subject: wifi: mac80211: align ieee80211_mle_get_bss_param_ch_cnt() Align the prototype of ieee80211_mle_get_bss_param_ch_cnt() to also take a u8 * like the other functions, and make it return -1 when the field isn't found, so that mac80211 can check that instead of explicitly open-coding the check. Signed-off-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://msgid.link/20240216135047.583309181bc3.Ia61cb0b4fc034d5ac8fcfaf6f6fb2e115fadafe7@changeid Signed-off-by: Johannes Berg --- net/mac80211/mlme.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'net/mac80211') diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 87ffc19770b8..5f2e9f5e1779 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -4202,13 +4202,14 @@ static bool ieee80211_assoc_config_link(struct ieee80211_link_data *link, */ assoc_data->link[link_id].status = WLAN_STATUS_SUCCESS; if (elems->ml_basic) { - if (!(elems->ml_basic->control & - cpu_to_le16(IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT))) { + int bss_param_ch_cnt = + ieee80211_mle_get_bss_param_ch_cnt((const void *)elems->ml_basic); + + if (bss_param_ch_cnt < 0) { ret = false; goto out; } - link->u.mgd.bss_param_ch_cnt = - ieee80211_mle_get_bss_param_ch_cnt(elems->ml_basic); + link->u.mgd.bss_param_ch_cnt = bss_param_ch_cnt; } } else if (elems->parse_error & IEEE80211_PARSE_ERR_DUP_NEST_ML_BASIC || !elems->prof || -- cgit v1.2.3