diff options
| author | Johannes Berg <johannes@sipsolutions.net> | 2009-07-01 21:26:42 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-07-10 21:01:48 +0200 |
| commit | df2b35b65b7142bac2c7add3a1dedde3a373aff3 (patch) | |
| tree | 7c06b2d0b4c3e7e29f975808eff9e12d87bca8b0 /net/wireless/wext.c | |
| parent | mac80211_hwsim: fix-up build damage from removal of skb->dst (diff) | |
| download | linux-df2b35b65b7142bac2c7add3a1dedde3a373aff3.tar.xz linux-df2b35b65b7142bac2c7add3a1dedde3a373aff3.zip | |
wext: allow returning NULL stats
Currently, wext drivers cannot return NULL for stats even though
that would make the ioctl return -EOPNOTSUPP because that would
mean they are no longer listed in /proc/net/wireless. This patch
changes the wext core's behaviour to list them if they have any
wireless_handlers, but only show their stats when available, so
that drivers can start returning NULL if stats are currently not
available, reducing confusion for e.g. IBSS.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless/wext.c')
| -rw-r--r-- | net/wireless/wext.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/net/wireless/wext.c b/net/wireless/wext.c index 252c2010c2e2..5da07e079c20 100644 --- a/net/wireless/wext.c +++ b/net/wireless/wext.c @@ -610,6 +610,11 @@ static void wireless_seq_printf_stats(struct seq_file *seq, { /* Get stats from the driver */ struct iw_statistics *stats = get_wireless_stats(dev); + static struct iw_statistics nullstats = {}; + + /* show device if it's wireless regardless of current stats */ + if (!stats && dev->wireless_handlers) + stats = &nullstats; if (stats) { seq_printf(seq, "%6s: %04x %3d%c %3d%c %3d%c %6d %6d %6d " @@ -628,7 +633,9 @@ static void wireless_seq_printf_stats(struct seq_file *seq, stats->discard.nwid, stats->discard.code, stats->discard.fragment, stats->discard.retries, stats->discard.misc, stats->miss.beacon); - stats->qual.updated &= ~IW_QUAL_ALL_UPDATED; + + if (stats != &nullstats) + stats->qual.updated &= ~IW_QUAL_ALL_UPDATED; } } |