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Commit 21c701cb authored by Shayne Chen's avatar Shayne Chen Committed by Greg Kroah-Hartman
Browse files

wifi: mac80211: make rate u32 in sta_set_rate_info_rx() 



[ Upstream commit 59336e07b287d91dc4ec265e07724e8f7e3d0209 ]

The value of last_rate in ieee80211_sta_rx_stats is degraded from u32 to
u16 after being assigned to rate variable, which causes information loss
in STA_STATS_FIELD_TYPE and later bitfields.

Signed-off-by: default avatarShayne Chen <shayne.chen@mediatek.com>
Link: https://lore.kernel.org/r/20230209110659.25447-1-shayne.chen@mediatek.com


Fixes: 41cbb0f5 ("mac80211: add support for HE")
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent b70d56e7

net/mac80211/sta_info.c

+1 −1
Original line number Diff line number Diff line
@@ -2121,7 +2121,7 @@ static void sta_stats_decode_rate(struct ieee80211_local *local, u32 rate, 


static int sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)

{

	u16 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate);

	u32 rate = READ_ONCE(sta_get_last_rx_stats(sta)->last_rate);



	if (rate == STA_STATS_RATE_INVALID)

		return -EINVAL;