From: Johannes Berg <johannes@sipsolutions.net>
To: linux-wireless@vger.kernel.org
Cc: Johannes Berg <johannes.berg@intel.com>
Subject: [PATCH 18/28] wifi: mac80211: add RCU _check() link access variants
Date: Wed, 5 Oct 2022 15:00:38 +0200 [thread overview]
Message-ID: <20221005145226.be2d0a5f0c99.I6d4abf13505122fca79578bb9da9473214602f13@changeid> (raw)
In-Reply-To: <20221005130048.217341-1-johannes@sipsolutions.net>
From: Johannes Berg <johannes.berg@intel.com>
We might sometimes need to use RCU and locking in the same code
path, so add the two variants link_conf_dereference_check() and
link_sta_dereference_check().
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
include/net/mac80211.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index c413050ec8dd..cda4584dfd51 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1915,6 +1915,10 @@ static inline bool lockdep_vif_mutex_held(struct ieee80211_vif *vif)
rcu_dereference_protected((vif)->link_conf[link_id], \
lockdep_vif_mutex_held(vif))
+#define link_conf_dereference_check(vif, link_id) \
+ rcu_dereference_check((vif)->link_conf[link_id], \
+ lockdep_vif_mutex_held(vif))
+
/**
* enum ieee80211_key_flags - key flags
*
@@ -2311,6 +2315,10 @@ static inline bool lockdep_sta_mutex_held(struct ieee80211_sta *pubsta)
rcu_dereference_protected((sta)->link[link_id], \
lockdep_sta_mutex_held(sta))
+#define link_sta_dereference_check(sta, link_id) \
+ rcu_dereference_check((sta)->link[link_id], \
+ lockdep_sta_mutex_held(sta))
+
#define for_each_sta_active_link(vif, sta, link_sta, link_id) \
for (link_id = 0; link_id < ARRAY_SIZE((sta)->link); link_id++) \
if ((!(vif)->active_links || \
--
2.37.3
next prev parent reply other threads:[~2022-10-05 13:01 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-05 13:00 [PATCH 00/28] wifi: further MLO work Johannes Berg
2022-10-05 13:00 ` [PATCH 01/28] wifi: mac80211: add pointer from link STA to STA Johannes Berg
2022-10-05 13:00 ` [PATCH 02/28] wifi: mac80211: add API to show the link STAs in debugfs Johannes Berg
2022-10-05 13:00 ` [PATCH 03/28] wifi: mac80211: include link address " Johannes Berg
2022-10-05 13:00 ` [PATCH 04/28] wifi: mac80211: recalc station aggregate data during link switch Johannes Berg
2022-10-05 13:00 ` [PATCH 05/28] wifi: cfg80211: support reporting failed links Johannes Berg
2022-10-06 10:49 ` Veerendranath Jakkam
2022-10-06 10:51 ` Johannes Berg
2022-10-06 11:09 ` Veerendranath Jakkam
2022-10-06 11:11 ` Johannes Berg
2022-10-06 14:40 ` Veerendranath Jakkam
2022-10-05 13:00 ` [PATCH 06/28] wifi: ieee80211: Support validating ML station profile length Johannes Berg
2022-10-05 13:00 ` [PATCH 07/28] wifi: cfg80211/mac80211: Fix ML element common size calculation Johannes Berg
2022-10-05 13:00 ` [PATCH 08/28] wifi: cfg80211/mac80211: Fix ML element common size validation Johannes Berg
2022-10-05 13:00 ` [PATCH 09/28] wifi: mac80211: Parse station profile from association response Johannes Berg
2022-10-05 13:00 ` [PATCH 10/28] wifi: mac80211: Process association status for affiliated links Johannes Berg
2022-10-05 13:00 ` [PATCH 11/28] wifi: mac80211: wme: use ap_addr instead of deflink BSSID Johannes Berg
2022-10-05 13:00 ` [PATCH 12/28] wifi: mac80211: transmit AddBA with MLD address Johannes Berg
2022-10-05 13:00 ` [PATCH 13/28] wifi: nl80211: use link ID in NL80211_CMD_SET_BSS Johannes Berg
2022-10-05 13:00 ` [PATCH 14/28] wifi: mac80211: use link_id in ieee80211_change_bss() Johannes Berg
2022-10-05 13:00 ` [PATCH 15/28] wifi: mac80211: advertise TWT requester only with HW support Johannes Berg
2022-10-05 13:00 ` [PATCH 16/28] wifi: mac80211: set internal scan request BSSID Johannes Berg
2022-10-05 13:00 ` [PATCH 17/28] wifi: mac80211: fix AddBA response addressing Johannes Berg
2022-10-05 13:00 ` Johannes Berg [this message]
2022-10-05 13:00 ` [PATCH 19/28] wifi: fix multi-link element subelement iteration Johannes Berg
2022-10-05 13:00 ` [PATCH 20/28] wifi: mac80211: mlme: fix null-ptr deref on failed assoc Johannes Berg
2022-10-05 13:00 ` [PATCH 21/28] wifi: mac80211: check link ID in auth/assoc continuation Johannes Berg
2022-10-05 13:00 ` [PATCH 22/28] wifi: mac80211: mlme: mark assoc link in output Johannes Berg
2022-10-05 13:00 ` [PATCH 23/28] wifi: mac80211: change AddBA deny error message Johannes Berg
2022-10-05 13:00 ` [PATCH 24/28] wifi: mac80211: don't clear DTIM period after setting it Johannes Berg
2022-10-05 13:00 ` [PATCH 25/28] wifi: mac80211: prohibit IEEE80211_HT_CAP_DELAY_BA with MLO Johannes Berg
2022-10-05 13:00 ` [PATCH 26/28] wifi: mac80211: agg-rx: avoid band check Johannes Berg
2022-10-05 13:00 ` [PATCH 27/28] wifi: mac80211: remove support for AddBA with fragmentation Johannes Berg
2022-10-05 13:00 ` [PATCH 28/28] wifi: mac80211: fix ifdef symbol name Johannes Berg
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