From: Ido Yariv Date: Tue, 6 Jan 2015 13:39:02 +0000 (-0500) Subject: mac80211: Re-fix accounting of the tailroom-needed counter X-Git-Tag: fixes-v4.0-rc1~150^2~206^2~23 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=db12847ca84b7a315a3ba77c939c9d08df17d54f;p=pandora-kernel.git mac80211: Re-fix accounting of the tailroom-needed counter When hw acceleration is enabled, the GENERATE_IV or PUT_IV_SPACE flags only require headroom space. Therefore, the tailroom-needed counter can safely be decremented for most drivers. The older incarnation of this patch (ca34e3b5) assumed that the above holds true for all drivers. As reported by Christopher Chavez and researched by Christian Lamparter and Larry Finger, this isn't a valid assumption for p54 and cw1200. Drivers that still require tailroom for ICV/MIC even when HW encryption is enabled can use IEEE80211_KEY_FLAG_RESERVE_TAILROOM to indicate it. Signed-off-by: Ido Yariv Cc: Christopher Chavez Cc: Christian Lamparter Cc: Larry Finger Cc: Solomon Peachy Signed-off-by: Johannes Berg --- diff --git a/drivers/net/wireless/cw1200/sta.c b/drivers/net/wireless/cw1200/sta.c index a1e3237c0be8..4a47c7f8a246 100644 --- a/drivers/net/wireless/cw1200/sta.c +++ b/drivers/net/wireless/cw1200/sta.c @@ -709,7 +709,8 @@ int cw1200_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd, if (sta) peer_addr = sta->addr; - key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; + key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE | + IEEE80211_KEY_FLAG_RESERVE_TAILROOM; switch (key->cipher) { case WLAN_CIPHER_SUITE_WEP40: Reading git-diff-tree failed