This is a note to let you know that I've just added the patch titled
cfg80211: make RATE_INFO_BW_20 the default
to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: cfg80211-make-rate_info_bw_20-the-default.patch and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Tue Apr 10 10:31:53 CEST 2018
From: Johannes Berg johannes.berg@intel.com Date: Thu, 4 May 2017 08:42:30 +0200 Subject: cfg80211: make RATE_INFO_BW_20 the default
From: Johannes Berg johannes.berg@intel.com
[ Upstream commit 842be75c77cb72ee546a2b19da9c285fb3ded660 ]
Due to the way I did the RX bitrate conversions in mac80211 with spatch, going setting flags to setting the value, many drivers now don't set the bandwidth value for 20 MHz, since with the flags it wasn't necessary to (there was no 20 MHz flag, only the others.)
Rather than go through and try to fix up all the drivers, instead renumber the enum so that 20 MHz, which is the typical bandwidth, actually has the value 0, making those drivers all work again.
If VHT was hit used with a driver not reporting it, e.g. iwlmvm, this manifested in hitting the bandwidth warning in cfg80211_calculate_bitrate_vht().
Reported-by: Linus Torvalds torvalds@linux-foundation.org Tested-by: Jens Axboe axboe@kernel.dk Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/net/cfg80211.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -933,9 +933,9 @@ enum rate_info_flags { * @RATE_INFO_BW_160: 160 MHz bandwidth */ enum rate_info_bw { + RATE_INFO_BW_20 = 0, RATE_INFO_BW_5, RATE_INFO_BW_10, - RATE_INFO_BW_20, RATE_INFO_BW_40, RATE_INFO_BW_80, RATE_INFO_BW_160,
Patches currently in stable-queue which might be from johannes.berg@intel.com are
queue-4.4/cfg80211-make-rate_info_bw_20-the-default.patch queue-4.4/mac80211-bail-out-from-prep_connection-if-a-reconfig-is-ongoing.patch