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mac80211: fix station rate table updates on assoc

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commit 18fe0fae61 upstream.

If the driver uses .sta_add, station entries are only uploaded after the sta
is in assoc state. Fix early station rate table updates by deferring them
until the sta has been uploaded.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20210201083324.3134-1-nbd@nbd.name
[use rcu_access_pointer() instead since we won't dereference here]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felix Fietkau
2021-02-01 09:33:24 +01:00
committed by Greg Kroah-Hartman
parent 8ccf963c62
commit 2ca1ddc32b
2 changed files with 6 additions and 2 deletions
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5
net/mac80211/driver-ops.c
View File

@@ -125,8 +125,11 @@ int drv_sta_state(struct ieee80211_local *local,
} else if (old_state == IEEE80211_STA_AUTH && } else if (old_state == IEEE80211_STA_AUTH &&
new_state == IEEE80211_STA_ASSOC) { new_state == IEEE80211_STA_ASSOC) {
ret = drv_sta_add(local, sdata, &sta->sta); ret = drv_sta_add(local, sdata, &sta->sta);
if (ret == 0) if (ret == 0) {
sta->uploaded = true; sta->uploaded = true;
if (rcu_access_pointer(sta->sta.rates))
drv_sta_rate_tbl_update(local, sdata, &sta->sta);
}
} else if (old_state == IEEE80211_STA_ASSOC && } else if (old_state == IEEE80211_STA_ASSOC &&
new_state == IEEE80211_STA_AUTH) { new_state == IEEE80211_STA_AUTH) {
drv_sta_remove(local, sdata, &sta->sta); drv_sta_remove(local, sdata, &sta->sta);

1
net/mac80211/rate.c
View File

@@ -960,6 +960,7 @@ int rate_control_set_rates(struct ieee80211_hw *hw,
if (old) if (old)
kfree_rcu(old, rcu_head); kfree_rcu(old, rcu_head);
if (sta->uploaded)
drv_sta_rate_tbl_update(hw_to_local(hw), sta->sdata, pubsta); drv_sta_rate_tbl_update(hw_to_local(hw), sta->sdata, pubsta);
ieee80211_sta_set_expected_throughput(pubsta, sta_get_expected_throughput(sta)); ieee80211_sta_set_expected_throughput(pubsta, sta_get_expected_throughput(sta));