diff options
Diffstat (limited to 'package/kernel/mac80211/patches/340-mac80211-fix-parsing-of-40Mhz-in-injected-radiotap-h.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/340-mac80211-fix-parsing-of-40Mhz-in-injected-radiotap-h.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/340-mac80211-fix-parsing-of-40Mhz-in-injected-radiotap-h.patch b/package/kernel/mac80211/patches/340-mac80211-fix-parsing-of-40Mhz-in-injected-radiotap-h.patch new file mode 100644 index 0000000000..de1b38625c --- /dev/null +++ b/package/kernel/mac80211/patches/340-mac80211-fix-parsing-of-40Mhz-in-injected-radiotap-h.patch @@ -0,0 +1,36 @@ +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; + |