lwn.git/net/mac80211/driver-ops.c, branch docs-6.12

Merge tag 'wireless-next-2024-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

2024-06-27T20:53:43+00:00

Johannes Berg says: ==================== Highlights this time are: - cfg80211/nl80211: * improvements for 6 GHz regulatory flexibility - mac80211: * use generic netdev stats * multi-link improvements/fixes - brcmfmac: * MFP support (to enable WPA3) - wilc1000: * suspend/resume improvements - iwlwifi: * remove support for older FW for new devices * fast resume (keeping the device configured) - wl18xx: * support newer firmware versions * tag 'wireless-next-2024-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (100 commits) wifi: brcmfmac: of: Support interrupts-extended wifi: brcmsmac: advertise MFP_CAPABLE to enable WPA3 net: rfkill: Correct return value in invalid parameter case wifi: mac80211: fix NULL dereference at band check in starting tx ba session wifi: iwlwifi: mvm: fix rs.h kernel-doc wifi: iwlwifi: fw: api: datapath: fix kernel-doc wifi: iwlwifi: fix remaining mistagged kernel-doc comments wifi: iwlwifi: fix prototype mismatch kernel-doc warnings wifi: iwlwifi: fix kernel-doc in iwl-fh.h wifi: iwlwifi: fix kernel-doc in iwl-trans.h wifi: iwlwifi: pcie: fix kernel-doc wifi: iwlwifi: dvm: fix kernel-doc warnings wifi: iwlwifi: mvm: don't log error for failed UATS table read wifi: iwlwifi: trans: make bad state warnings wifi: iwlwifi: fw: api: fix some kernel-doc wifi: iwlwifi: mvm: remove init_dbg module parameter wifi: iwlwifi: update the BA notification API wifi: iwlwifi: mvm: always unblock EMLSR on ROC end wifi: iwlwifi: mvm: use IWL_FW_CHECK for link ID check wifi: iwlwifi: mvm: don't flush BSSes on restart with MLD API ... ==================== Link: https://patch.msgid.link/20240627114135.28507-3-johannes@sipsolutions.net Signed-off-by: Jakub Kicinski

wifi: mac80211: inform the low level if drv_stop() is a suspend

2024-06-26T08:25:46+00:00

This will allow the low level driver to take different actions for different flows. Signed-off-by: Emmanuel Grumbach Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20240618192529.739036208b6e.Ie18a2fe8e02bf2717549d39420b350cfdaf3d317@changeid Signed-off-by: Johannes Berg

wifi: mac80211: fix monitor channel with chanctx emulation

2024-06-14T07:14:08+00:00

After the channel context emulation, there were reports that changing the monitor channel no longer works. This is because those drivers don't have WANT_MONITOR_VIF, so the setting the channel always exits out quickly. Fix this by always allocating the virtual monitor sdata, and simply not telling the driver about it unless it wanted to. This way, we have an interface/sdata to bind the chanctx to, and the emulation can work correctly. Cc: stable@vger.kernel.org Fixes: 0a44dfc07074 ("wifi: mac80211: simplify non-chanctx drivers") Reported-and-tested-by: Savyasaachi Vanga Closes: https://lore.kernel.org/r/chwoymvpzwtbmzryrlitpwmta5j6mtndocxsyqvdyikqu63lon@gfds653hkknl Link: https://msgid.link/20240612122351.b12d4a109dde.I1831a44417faaab92bea1071209abbe4efbe3fba@changeid Signed-off-by: Johannes Berg

wifi: mac80211: add ieee80211_vif_link_active() helper

2024-03-04T13:32:53+00:00

We sometimes need to check if a link is active, and this is complicated by the fact that active_links has no bits set when the vif isn't (acting as) an MLD. Add a small new helper ieee80211_vif_link_active() to make that a bit easier, and use it in a few places. Reviewed-by: Ilan Peer Reviewed-by: Emmanuel Grumbach Reviewed-by: Miriam Rachel Korenblit Link: https://msgid.link/20240228094901.688760aff5f7.I06892a503f5ecb9563fbd678d35d08daf7a044b0@changeid Signed-off-by: Johannes Berg

wifi: mac80211: add/remove driver debugfs entries as appropriate

2023-12-19T12:08:00+00:00

When an interface is removed, we should also be deleting the driver debugfs entries (as it might still exist in DOWN state in mac80211). At the same time, when adding an interface, we can check the IEEE80211_SDATA_IN_DRIVER flag to know whether the interface was previously known to the driver and is simply being reconfigured. Fixes: a1f5dcb1c0c1 ("wifi: mac80211: add a driver callback to add vif debugfs") Signed-off-by: Benjamin Berg Reviewed-by: Gregory Greenman Signed-off-by: Miri Korenblit Link: https://msgid.link/20231220043149.a9f64c359424.I7076526b5297ae8f832228079c999f7b8e147a4c@changeid Signed-off-by: Johannes Berg

wifi: mac80211: do not re-add debugfs entries during resume

2023-12-19T12:07:13+00:00

The driver debugfs entries still exist when the interface is re-added during reconfiguration. This can be either because of a HW restart (in_reconfig) or because we are resuming. Fixes: a1f5dcb1c0c1 ("wifi: mac80211: add a driver callback to add vif debugfs") Signed-off-by: Benjamin Berg Reviewed-by: Gregory Greenman Signed-off-by: Miri Korenblit Link: https://msgid.link/20231220043149.ddd48c66ec6b.Ia81080d92129ceecf462eceb4966bab80df12060@changeid Signed-off-by: Johannes Berg

wifi: mac80211: don't re-add debugfs during reconfig

2023-12-12T09:14:57+00:00

If we're doing reconfig, then we cannot add the debugfs files that are already there from before the reconfig. Skip that in drv_change_sta_links() during reconfig. Fixes: d2caad527c19 ("wifi: mac80211: add API to show the link STAs in debugfs") Signed-off-by: Johannes Berg Reviewed-by: Gregory Greenman Reviewed-by: Benjamin Berg Signed-off-by: Miri Korenblit Link: https://msgid.link/20231211085121.88a950f43e16.Id71181780994649219685887c0fcad33d387cc78@changeid Signed-off-by: Johannes Berg

wifi: mac80211: handle debugfs when switching to/from MLO

2023-10-23T09:43:26+00:00

In MLO, we have a per-link debugfs directory which contains the per-link files. In case of non-MLO we would like to put the per-link files in the netdev directory to keep it how it was before MLO. - Upon interface creation the netdev will be created with the per-link files in it. - Upon switching to MLO: delete the entire netdev directory and then recreate it without the per-link files. Then the per-link directories with the per-link files in it will be created in ieee80211_link_init() - Upon switching to non-MLO: delete the entire netdev directory (including the per-link directories) and recreate it with the per-link files in it. Note that this also aligns to always call the vif link debugfs method for the deflink as promised in the documentation, which wasn't done before. Signed-off-by: Miri Korenblit Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230928172905.082e698caca9.I5bef7b2026e0f58b4a958b3d1f459ac5baeccfc9@changeid Signed-off-by: Johannes Berg

wifi: mac80211: add a driver callback to add vif debugfs

2023-10-23T09:43:26+00:00

Add a callback which the driver can use to add the vif debugfs. We used to have this back until commit d260ff12e776 ("mac80211: remove vif debugfs driver callbacks") where we thought that it will be easier to just add them during interface add/remove. However, now with multi-link, we want to have proper debugfs for drivers for multi-link where some files might be in the netdev for non-MLO connections, and in the links for MLO ones, so we need to do some reconstruction when switching the mode. Moving to this new call enables that and MLO drivers will have to use it for proper debugfs operation. Signed-off-by: Miri Korenblit Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230928172905.ac38913f6ab7.Iee731d746bb08fcc628fa776f337016a12dc62ac@changeid Signed-off-by: Johannes Berg

wifi: mac80211: don't recreate driver link debugfs in reconfig

2023-10-23T09:43:26+00:00

We can delete any that we want to remove, but we can't recreate the links as they already exist. Fixes: 170cd6a66d9a ("wifi: mac80211: add netdev per-link debugfs data and driver hook") Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230928172905.3d0214838421.I512a0ff86f631ff42bf25ea0cb2e8e8616794a94@changeid Signed-off-by: Johannes Berg