lwn.git/net/mac80211/scan.c, branch docs-6.9

wifi: mac80211: Replace ENOTSUPP with EOPNOTSUPP

2023-12-12T09:37:01+00:00

ENOTSUP isn't a standard error code. EOPNOTSUPP should be used instead. Signed-off-by: Andrei Otcheretianski Reviewed-by: Gregory Greenman Signed-off-by: Miri Korenblit Link: https://msgid.link/20231211085121.3841b71c867d.Idf2ad01d9dfe8d6d6c352bf02deb06e49701ad1d@changeid Signed-off-by: Johannes Berg

wifi: mac80211: Extend support for scanning while MLO connected

2023-11-24T19:06:31+00:00

- If the scan request includes a link ID, validate that it is one of the active links. Otherwise, if the scan request doesn't include a valid link ID, select one of the active links. - When reporting the TSF for a BSS entry, use the link ID information from the Rx status or the scan request to set the parent BSSID. Signed-off-by: Ilan Peer Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20231113112844.68564692c404.Iae9605cbb7f9d52e00ce98260b3559a34cf18341@changeid Signed-off-by: Johannes Berg

wifi: cfg80211: remove scan_width support

2023-09-13T09:10:50+00:00

There really isn't any support for scanning at different channel widths than 20 MHz since there's no way to set it. Remove this support for now, if somebody wants to maintain this whole thing later we can revisit how it should work. Signed-off-by: Johannes Berg

wifi: mac80211: reduce iflist_mtx

2023-09-11T09:27:22+00:00

We now hold the wiphy mutex everywhere that we use or needed the iflist_mtx, so we don't need this mutex any more in mac80211. However, drivers may also iterate, and in some cases (e.g. mt76) do so from high-priority contexts. Thus, keep the mutex around but remove its usage in mac80211 apart from those driver-visible parts that are still needed. Most of this change was done automatically with spatch, with the parts that are still needed as described above reverted manually. Signed-off-by: Johannes Berg

wifi: mac80211: remove local->mtx

2023-09-11T09:27:22+00:00

We now hold the wiphy mutex everywhere that we use or needed the local->mtx, so we don't need this mutex any more. Remove it. Most of this change was done automatically with spatch. Signed-off-by: Johannes Berg

wifi: mac80211: move sched-scan stop work to wiphy work

2023-09-11T09:27:20+00:00

This also has the wiphy locked here then. We need to use the _locked version of cfg80211_sched_scan_stopped() now, which also fixes an old deadlock there. Fixes: a05829a7222e ("cfg80211: avoid holding the RTNL when calling the driver") Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg

wifi: mac80211: move scan work to wiphy work

2023-09-11T09:27:19+00:00

Move the scan work to wiphy work, which also simplifies the way we handle the work vs. the scan configuration. Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg

wifi: mac80211: use new inform_bss callback

2023-06-19T10:05:28+00:00

Doing this simplifies the code somewhat, as iteration over the nontransmitted BSSs is not required anymore. Also, mac80211 should not be iterating over the nontrans_list as it should only be accessed while the bss_lock is held. It also simplifies parsing of the IEs somewhat, as cfg80211 already extracts the IEs and passes them to the callback. Note that the only user left requiring parsing a specific BSS is the association code if a beacon is required by the hardware. Signed-off-by: Benjamin Berg Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230616094949.39ebfe2f9e59.Ia012b08e0feed8ec431b666888b459f6366f7bd1@changeid Signed-off-by: Johannes Berg

wifi: mac80211: use wiphy work for sdata->work

2023-06-07T17:53:18+00:00

We'll need this later to convert other works that might be cancelled from here, so convert this one first. Signed-off-by: Johannes Berg

wifi: mac80211: adjust scan cancel comment/check

2023-03-07T09:28:51+00:00

Instead of the comment about holding RTNL, which is now wrong, add a proper lockdep assertion for the wiphy mutex. Fixes: a05829a7222e ("cfg80211: avoid holding the RTNL when calling the driver") Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230301115906.84352e46f342.Id90fef8c581cebe19cb30274340cf43885d55c74@changeid Signed-off-by: Johannes Berg