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wifi: mac80211: pass 'sta' to ieee80211_rx_data_set_sta()

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There's at least one case in ieee80211_rx_for_interface()
where we might pass &((struct sta_info *)NULL)->sta to it
only to then do container_of(), and then checking the
result for NULL, but checking the result of container_of()
for NULL looks really odd.

Fix this by just passing the struct sta_info * instead.

Fixes: e66b7920aa ("wifi: mac80211: fix initialization of rx->link and rx->link_sta")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2023-02-15 10:07:05 +01:00
parent c38c701851
commit 0d846bdc11
1 changed files with 11 additions and 15 deletions
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26
net/mac80211/rx.c
View file

@ -4115,13 +4115,8 @@ static bool ieee80211_rx_data_set_link(struct ieee80211_rx_data *rx,
}
static bool ieee80211_rx_data_set_sta(struct ieee80211_rx_data *rx,
struct ieee80211_sta *pubsta,
int link_id)
struct sta_info *sta, int link_id)
{
struct sta_info *sta;
sta = container_of(pubsta, struct sta_info, sta);
rx->link_id = link_id;
rx->sta = sta;
@ -4159,7 +4154,7 @@ void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid)
if (sta->sta.valid_links)
link_id = ffs(sta->sta.valid_links) - 1;
if (!ieee80211_rx_data_set_sta(&rx, &sta->sta, link_id))
if (!ieee80211_rx_data_set_sta(&rx, sta, link_id))
return;
tid_agg_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[tid]);
@ -4205,7 +4200,7 @@ void ieee80211_mark_rx_ba_filtered_frames(struct ieee80211_sta *pubsta, u8 tid,
sta = container_of(pubsta, struct sta_info, sta);
if (!ieee80211_rx_data_set_sta(&rx, pubsta, -1))
if (!ieee80211_rx_data_set_sta(&rx, sta, -1))
return;
rcu_read_lock();
@ -4914,6 +4909,7 @@ static void __ieee80211_rx_handle_8023(struct ieee80211_hw *hw,
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
struct ieee80211_fast_rx *fast_rx;
struct ieee80211_rx_data rx;
struct sta_info *sta;
int link_id = -1;
memset(&rx, 0, sizeof(rx));
@ -4941,7 +4937,8 @@ static void __ieee80211_rx_handle_8023(struct ieee80211_hw *hw,
* link_id is used only for stats purpose and updating the stats on
* the deflink is fine?
*/
if (!ieee80211_rx_data_set_sta(&rx, pubsta, link_id))
sta = container_of(pubsta, struct sta_info, sta);
if (!ieee80211_rx_data_set_sta(&rx, sta, link_id))
goto drop;
fast_rx = rcu_dereference(rx.sta->fast_rx);
@ -4981,7 +4978,7 @@ static bool ieee80211_rx_for_interface(struct ieee80211_rx_data *rx,
link_id = status->link_id;
}
if (!ieee80211_rx_data_set_sta(rx, &sta->sta, link_id))
if (!ieee80211_rx_data_set_sta(rx, sta, link_id))
return false;
return ieee80211_prepare_and_rx_handle(rx, skb, consume);
@ -5048,7 +5045,8 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
link_id = status->link_id;
if (pubsta) {
if (!ieee80211_rx_data_set_sta(&rx, pubsta, link_id))
sta = container_of(pubsta, struct sta_info, sta);
if (!ieee80211_rx_data_set_sta(&rx, sta, link_id))
goto out;
/*
@ -5085,8 +5083,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
}
rx.sdata = prev_sta->sdata;
if (!ieee80211_rx_data_set_sta(&rx, &prev_sta->sta,
link_id))
if (!ieee80211_rx_data_set_sta(&rx, prev_sta, link_id))
goto out;
if (!status->link_valid && prev_sta->sta.mlo)
@ -5099,8 +5096,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
if (prev_sta) {
rx.sdata = prev_sta->sdata;
if (!ieee80211_rx_data_set_sta(&rx, &prev_sta->sta,
link_id))
if (!ieee80211_rx_data_set_sta(&rx, prev_sta, link_id))
goto out;
if (!status->link_valid && prev_sta->sta.mlo)