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cfg80211: fix dfs channels remain DFS_AVAILABLE after ch_switch

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Depending on the regulatory domain, leaving a DFS channel requires
a new CAC to be performed when returning back to that channel.
If needed, update dfs states after a driver channel switch.

Signed-off-by: Michael Vassernis <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Johannes Berg <[email protected]>
This commit is contained in:
Michael Vassernis 2019-07-29 06:01:16 +00:00 • committed by Johannes Berg
commit d34990bbc2
1 changed files with 2 additions and 0 deletions
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2
net/wireless/nl80211.c
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@ -16118,6 +16118,8 @@ void cfg80211_ch_switch_notify(struct net_device *dev,
!WARN_ON(!wdev->current_bss))
cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
cfg80211_sched_dfs_chan_update(rdev);
nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
NL80211_CMD_CH_SWITCH_NOTIFY, 0);
}