diff options
| author | Christian Lamparter <chunkeey@web.de> | 2009-01-24 10:45:10 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-02-06 13:47:22 -0800 |
| commit | 3a0dfc2d0a1fe25c03e2c41d6931ea5b423513db (patch) | |
| tree | 4f512442686018a984dbd7be8b1cf7de270cd64a | |
| parent | d661ee77bd5eedd3782155b6c6f4426dda3abdd3 (diff) | |
minstrel: fix warning if lowest supported rate index is not 0
commit d57854bb1d78ba89ffbfdfd1c3e95b52ed7478ff upstream
This patch fixes the following WARNING (caused by rix_to_ndx): "
>WARNING: at net/mac80211/rc80211_minstrel.c:69 minstrel_rate_init+0xd2/0x33a [mac80211]()
>[...]
>Call Trace:
> warn_on_slowpath+0x51/0x75
> _format_mac_addr+0x4c/0x88
> minstrel_rate_init+0xd2/0x33a [mac80211]
> print_mac+0x16/0x1b
> schedule_hrtimeout_range+0xdc/0x107
> ieee80211_add_station+0x158/0x1bd [mac80211]
> nl80211_new_station+0x1b3/0x20b [cfg80211]
The reason is that I'm experimenting with "g" only mode on a 802.11 b/g card.
Therefore rate_lowest_index returns 4 (= 6Mbit, instead of usual 0 = 1Mbit).
Since mi->r array is initialized with zeros in minstrel_alloc_sta,
rix_to_ndx has a hard time to find the 6Mbit entry and will trigged the WARNING.
Signed-off-by: Christian Lamparter <chunkeey@web.de>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | net/mac80211/rc80211_minstrel.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c index f6d69dab07a..8b702d0edd3 100644 --- a/net/mac80211/rc80211_minstrel.c +++ b/net/mac80211/rc80211_minstrel.c @@ -389,13 +389,15 @@ minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband, { struct minstrel_sta_info *mi = priv_sta; struct minstrel_priv *mp = priv; - struct minstrel_rate *mr_ctl; + struct ieee80211_local *local = hw_to_local(mp->hw); + struct ieee80211_rate *ctl_rate; unsigned int i, n = 0; unsigned int t_slot = 9; /* FIXME: get real slot time */ mi->lowest_rix = rate_lowest_index(sband, sta); - mr_ctl = &mi->r[rix_to_ndx(mi, mi->lowest_rix)]; - mi->sp_ack_dur = mr_ctl->ack_time; + ctl_rate = &sband->bitrates[mi->lowest_rix]; + mi->sp_ack_dur = ieee80211_frame_duration(local, 10, ctl_rate->bitrate, + !!(ctl_rate->flags & IEEE80211_RATE_ERP_G), 1); for (i = 0; i < sband->n_bitrates; i++) { struct minstrel_rate *mr = &mi->r[n]; @@ -410,7 +412,7 @@ minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband, mr->rix = i; mr->bitrate = sband->bitrates[i].bitrate / 5; - calc_rate_durations(mi, hw_to_local(mp->hw), mr, + calc_rate_durations(mi, local, mr, &sband->bitrates[i]); /* calculate maximum number of retransmissions before |