• Janusz Dziedzic's avatar
    mac80211: move WEP tailroom size check · 47b4e1fc
    Janusz Dziedzic authored
    Remove checking tailroom when adding IV as it uses only
    headroom, and move the check to the ICV generation that
    actually needs the tailroom.
    
    In other case I hit such warning and datapath don't work,
    when testing:
    - IBSS + WEP
    - ath9k with hw crypt enabled
    - IPv6 data (ping6)
    
    WARNING: CPU: 3 PID: 13301 at net/mac80211/wep.c:102 ieee80211_wep_add_iv+0x129/0x190 [mac80211]()
    [...]
    Call Trace:
    [<ffffffff817bf491>] dump_stack+0x45/0x57
    [<ffffffff8107746a>] warn_slowpath_common+0x8a/0xc0
    [<ffffffff8107755a>] warn_slowpath_null+0x1a/0x20
    [<ffffffffc09ae109>] ieee80211_wep_add_iv+0x129/0x190 [mac80211]
    [<ffffffffc09ae7ab>] ieee80211_crypto_wep_encrypt+0x6b/0xd0 [mac80211]
    [<ffffffffc09d3fb1>] invoke_tx_handlers+0xc51/0xf30 [mac80211]
    [...]
    
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatarJanusz Dziedzic <janusz.dziedzic@tieto.com>
    Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
    47b4e1fc
wep.c 9.13 KB