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authorJohannes Berg <johannes.berg@intel.com>2017-03-08 11:12:10 +0100
committerJohannes Berg <johannes.berg@intel.com>2017-03-08 14:20:01 +0100
commite8e4f5280ddd0a7b43a795f90a0758e3c99df6a6 (patch)
tree749391b6ba269af098d9ee4810b1dc24abf86d4a /net/mac80211/rate.h
parentb61fbda180b5c9f5f3ce7f2e63b0253c84ffdf09 (diff)
downloadlinux-e8e4f5280ddd0a7b43a795f90a0758e3c99df6a6.tar.bz2
mac80211: reject/clear user rate mask if not usable
If the user rate mask results in no (basic) rates being usable, clear it. Also, if we're already operating when it's set, reject it instead. Technically, selecting basic rates as the criterion is a bit too restrictive, but calculating the usable rates over all stations (e.g. in AP mode) is harder, and all stations must support the basic rates. Similarly, in client mode, the basic rates will be used anyway for control frames. This fixes the "no supported rates (...) in rate_mask ..." warning that occurs on TX when you've selected a rate mask that's not compatible with the connection (e.g. an AP that enables only the rates 36, 48, 54 and you've selected only 6, 9, 12.) Reported-by: Kirtika Ruchandani <kirtika@google.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/rate.h')
-rw-r--r--net/mac80211/rate.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h
index d51a1cce4d4a..f7825ef5f871 100644
--- a/net/mac80211/rate.h
+++ b/net/mac80211/rate.h
@@ -110,6 +110,8 @@ static inline void rate_control_remove_sta_debugfs(struct sta_info *sta)
#endif
}
+void ieee80211_check_rate_mask(struct ieee80211_sub_if_data *sdata);
+
/* Get a reference to the rate control algorithm. If `name' is NULL, get the
* first available algorithm. */
int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,