Commit a17d93ff authored by Ben Greear's avatar Ben Greear Committed by Johannes Berg
Browse files

mac80211: fix legacy and invalid rx-rate report 



This fixes obtaining the rate info via sta_set_sinfo
when the rx rate is invalid (for instance, on IBSS
interface that has received no frames from one of its
peers).

Also initialize rinfo->flags for legacy rates, to not
rely on the whole sinfo being initialized to zero.

Signed-off-by: default avatarBen Greear <greearb@candelatech.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent d8da0b5d

net/mac80211/sta_info.c

+8 −6
Original line number Diff line number Diff line
@@ -1972,6 +1972,7 @@ static void sta_stats_decode_rate(struct ieee80211_local *local, u16 rate, 
		u16 brate;

		unsigned int shift;



		rinfo->flags = 0;

		sband = local->hw.wiphy->bands[(rate >> 4) & 0xf];

		brate = sband->bitrates[rate & 0xf].bitrate;

		if (rinfo->bw == RATE_INFO_BW_5)
@@ -1987,14 +1988,15 @@ static void sta_stats_decode_rate(struct ieee80211_local *local, u16 rate, 
		rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;

}



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

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

{

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



	if (rate == STA_STATS_RATE_INVALID)

		rinfo->flags = 0;

	else

		return -EINVAL;



	sta_stats_decode_rate(sta->local, rate, rinfo);

	return 0;

}



static void sta_set_tidstats(struct sta_info *sta,
@@ -2199,7 +2201,7 @@ void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo) 
	}



	if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) {

		sta_set_rate_info_rx(sta, &sinfo->rxrate);

		if (sta_set_rate_info_rx(sta, &sinfo->rxrate) == 0)

			sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE);

	}

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