kernel/linux.git/net/wireless/mlme.c, branch v6.12.102

wifi: cfg80211: define and use wiphy guard

2026-08-03T09:17:02+00:00

[ Upstream commit f42d22d3f79639c1b4e41daf28dad2505d6a5a8b ] Define a guard for the wiphy mutex, and use it in most code in cfg80211, though not all due to some interaction with RTNL and/or indentation. Suggested-by: Jeff Johnson Reviewed-by: Jeff Johnson Signed-off-by: Johannes Berg Link: https://patch.msgid.link/20241122094225.88765cbaab65.I610c9b14f36902e75e1d13f0db29f8bef2298804@changeid Signed-off-by: Johannes Berg Stable-dep-of: 2b0eab425e1f ("wifi: cfg80211: convert pmsr_free_wk to wiphy_work to fix deadlock") Signed-off-by: Sasha Levin

wifi: cfg80211: stop radar detection in cfg80211_leave()

2026-01-08T09:13:57+00:00

[ Upstream commit 9f33477b9a31a1edfe2df9f1a0359cccb0e16b4c ] If an interface is set down or, per the previous patch, changes type, radar detection for it should be cancelled. This is done for AP mode in mac80211 (somewhat needlessly, since cfg80211 can do it, but didn't until now), but wasn't handled for mesh, so if radar detection was started and then the interface set down or its type switched (the latter sometimes happning in the hwsim test 'mesh_peer_connected_dfs'), radar detection would be around with the interface unknown to the driver, later leading to some warnings around chanctx usage. Link: https://patch.msgid.link/20251121174021.290120e419e3.I2a5650c9062e29c988992dd8ce0d8eb570d23267@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin

wifi: cfg80211: reject HTC bit for management frames

2025-08-20T16:30:29+00:00

[ Upstream commit be06a8c7313943109fa870715356503c4c709cbc ] Management frames sent by userspace should never have the order/HTC bit set, reject that. It could also cause some confusion with the length of the buffer and the header so the validation might end up wrong. Link: https://patch.msgid.link/20250718202307.97a0455f0f35.I1805355c7e331352df16611839bc8198c855a33f@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin

wifi: cfg80211: Remove the Medium Synchronization Delay validity check

2024-12-05T13:01:55+00:00

[ Upstream commit b4ebb58cb9a4b1b5cb5278b09d6afdcd71b2a6b4 ] Currently, when the driver attempts to connect to an AP MLD with multiple APs, the cfg80211_mlme_check_mlo_compat() function requires the Medium Synchronization Delay values from different APs of the same AP MLD to be equal, which may result in connection failures. This is because when the driver receives a multi-link probe response from an AP MLD with multiple APs, cfg80211 updates the Elements for each AP based on the multi-link probe response. If the Medium Synchronization Delay is set in the multi-link probe response, the Elements for each AP belonging to the same AP MLD will have the Medium Synchronization Delay set simultaneously. If non-multi-link probe responses are received from different APs of the same MLD AP, cfg80211 will still update the Elements based on the non-multi-link probe response. Since the non-multi-link probe response does not set the Medium Synchronization Delay (IEEE 802.11be-2024-35.3.4.4), if the Elements from a non-multi-link probe response overwrite those from a multi-link probe response that has set the Medium Synchronization Delay, the Medium Synchronization Delay values for APs belonging to the same AP MLD will not be equal. This discrepancy causes the cfg80211_mlme_check_mlo_compat() function to fail, leading to connection failures. Commit ccb964b4ab16 ("wifi: cfg80211: validate MLO connections better") did not take this into account. To address this issue, remove this validity check. Fixes: ccb964b4ab16 ("wifi: cfg80211: validate MLO connections better") Signed-off-by: Lingbo Kong Link: https://patch.msgid.link/20241031134223.970-1-quic_lingbok@quicinc.com Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin

wifi: cfg80211/mac80211: use proper link ID for DFS

2024-09-06T11:01:05+00:00

Now that all APIs have support to handle DFS per link, use proper link ID instead of 0. Signed-off-by: Aditya Kumar Singh Link: https://patch.msgid.link/20240906064426.2101315-8-quic_adisi@quicinc.com Signed-off-by: Johannes Berg

wifi: cfg80211: handle DFS per link

2024-09-06T11:01:05+00:00

Currently, during starting a radar detection, no link id information is parsed and passed down. In order to support starting radar detection during Multi Link Operation, it is required to pass link id as well. Add changes to first parse and then pass link id in the start radar detection path. Additionally, update notification APIs to allow drivers/mac80211 to pass the link ID. However, everything is handled at link 0 only until all API's are ready to handle it per link. Signed-off-by: Aditya Kumar Singh Link: https://patch.msgid.link/20240906064426.2101315-6-quic_adisi@quicinc.com Signed-off-by: Johannes Berg

wifi: cfg80211: move DFS related members to links[] in wireless_dev

2024-09-06T11:01:05+00:00

A few members related to DFS handling are currently under per wireless device data structure. However, in order to support DFS with MLO, there is a need to have them on a per-link manner. Hence, as a preliminary step, move members cac_started, cac_start_time and cac_time_ms to be on a per-link basis. Since currently, link ID is not known at all places, use default value of 0 for now. Signed-off-by: Aditya Kumar Singh Link: https://patch.msgid.link/20240906064426.2101315-5-quic_adisi@quicinc.com Signed-off-by: Johannes Berg

wifi: cfg80211: validate MLO connections better

2024-01-26T08:39:49+00:00

When going into an MLO connection, validate that the link IDs match what userspace indicated, and that the AP MLD addresses and capabilities are all matching between the links. Signed-off-by: Johannes Berg Reviewed-by: Gregory Greenman Signed-off-by: Miri Korenblit Link: https://msgid.link/20240102213313.ff83c034cb9a.I9962db0bfa8c73b37b8d5b59a3fad7f02f2129ae@changeid [roll in extra fix from Miri to actually check the return value] Signed-off-by: Johannes Berg

wifi: wireless: avoid strlen() in cfg80211_michael_mic_failure()

2024-01-26T08:28:26+00:00

In 'cfg80211_michael_mic_failure()', avoid extra call to 'strlen()' by using the value returned by 'sprintf()'. Compile tested only. Signed-off-by: Dmitry Antipov Link: https://msgid.link/20240110054246.371651-1-dmantipov@yandex.ru Signed-off-by: Johannes Berg

wifi: cfg80211: make RX assoc data const

2023-12-06T10:50:28+00:00

This is just a collection of data and we only read it, so make it const. Signed-off-by: Johannes Berg