BMC/Intel-BMC/linux.git/net/mac80211/rate.h, branch dev

mac80211: lock rate control

2015-04-20T11:05:29+00:00

Both minstrel (reported by Sven Eckelmann) and the iwlwifi rate control aren't properly taking concurrency into account. It's likely that the same is true for other rate control algorithms. In the case of minstrel this manifests itself in crashes when an update and other data access are run concurrently, for example when the stations change bandwidth or similar. In iwlwifi, this can cause firmware crashes. Since fixing all rate control algorithms will be very difficult, just provide locking for invocations. This protects the internal data structures the algorithms maintain. I've manipulated hostapd to test this, by having it change its advertised bandwidth roughly ever 150ms. At the same time, I'm running a flood ping between the client and the AP, which causes this race of update vs. get_rate/status to easily happen on the client. With this change, the system survives this test. Reported-by: Sven Eckelmann Signed-off-by: Johannes Berg

mac80211: add ieee80211_tx_status_noskb

2014-11-28T14:01:51+00:00

This can be used by drivers that cannot reliably map tx status information onto specific skbs. Signed-off-by: Felix Fietkau Signed-off-by: Johannes Berg

mac80211: add tx_status_noskb to rate_control_ops

2014-11-28T14:01:50+00:00

This op works like .tx_status, except it does not need access to the skb. This will be used by drivers that cannot match tx status information to specific packets. Signed-off-by: Felix Fietkau Signed-off-by: Johannes Berg

mac80211: remove PID rate control

2014-06-23T09:05:23+00:00

Minstrel has long since proven its worth. Signed-off-by: John W. Linville Signed-off-by: Johannes Berg

mac80211: make rate control ops const

2014-02-04T20:48:21+00:00

Change the code to allow making all the rate control ops const, nothing ever needs to change them. Also change all drivers to make use of this and mark the ops const. Signed-off-by: Johannes Berg

Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

2013-12-02T19:25:38+00:00

mac80211: fix rx_nss calculation for drivers with hw rc

2013-12-02T14:42:16+00:00

Drivers with hardware rate control were given sta->rx_nss set to 0. This was because rx_nss calculation procedure was protected by hw/sw rate control check. Signed-off-by: Michal Kazior Signed-off-by: Johannes Berg

net: misc: Remove extern from function prototypes

2013-10-19T23:12:11+00:00

There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Signed-off-by: Joe Perches Signed-off-by: David S. Miller

mac80211/rc80211: add chandef to rate initialization

2013-07-16T06:58:02+00:00

5 and 10 MHz support needs to know the current operating channel width, add the chandef to the rate control API. Signed-off-by: Simon Wunderlich Signed-off-by: Mathias Kretschmer Signed-off-by: Johannes Berg

mac80211: track number of spatial streams

2013-02-15T08:41:31+00:00

With VHT, a station can change the number of spatial streams it can receive on the fly, not unlike spatial multiplexing in HT. Prepare for that by tracking the maximum number of spatial streams it can receive when the connection is established. Signed-off-by: Johannes Berg