You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
36 lines
1.3 KiB
36 lines
1.3 KiB
From: Sven Eckelmann <sven@narfation.org>
|
|
Date: Wed, 24 Feb 2016 16:25:49 +0100
|
|
Subject: [PATCH] mac80211: fix parsing of 40Mhz in injected radiotap
|
|
header
|
|
|
|
The MCS bandwidth part of the radiotap header is 2 bits wide. The full 2
|
|
bit have to compared against IEEE80211_RADIOTAP_MCS_BW_40 and not only if
|
|
the first bit is set. Otherwise IEEE80211_RADIOTAP_MCS_BW_40 can be
|
|
confused with IEEE80211_RADIOTAP_MCS_BW_20U.
|
|
|
|
Fixes: 5ec3aed9ba4c ("mac80211: Parse legacy and HT rate in injected frames")
|
|
Signed-off-by: Sven Eckelmann <sven@narfation.org>
|
|
---
|
|
|
|
--- a/net/mac80211/tx.c
|
|
+++ b/net/mac80211/tx.c
|
|
@@ -1689,7 +1689,7 @@ static bool ieee80211_parse_tx_radiotap(
|
|
bool rate_found = false;
|
|
u8 rate_retries = 0;
|
|
u16 rate_flags = 0;
|
|
- u8 mcs_known, mcs_flags;
|
|
+ u8 mcs_known, mcs_flags, mcs_bw;
|
|
int i;
|
|
|
|
info->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT |
|
|
@@ -1765,8 +1765,9 @@ static bool ieee80211_parse_tx_radiotap(
|
|
mcs_flags & IEEE80211_RADIOTAP_MCS_SGI)
|
|
rate_flags |= IEEE80211_TX_RC_SHORT_GI;
|
|
|
|
+ mcs_bw = mcs_flags & IEEE80211_RADIOTAP_MCS_BW_MASK;
|
|
if (mcs_known & IEEE80211_RADIOTAP_MCS_HAVE_BW &&
|
|
- mcs_flags & IEEE80211_RADIOTAP_MCS_BW_40)
|
|
+ mcs_bw == IEEE80211_RADIOTAP_MCS_BW_40)
|
|
rate_flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
|
|
break;
|
|
|
|
|