From: Jouni Malinen <jouni.malinen@atheros.com>
To: Johannes Berg <johannes@sipsolutions.net>,
"John W. Linville" <linville@tuxdriver.com>
Cc: linux-wireless@vger.kernel.org
Subject: [PATCH] mac80211: Check pending scan request after having processed mgd work
Date: Tue, 25 Aug 2009 17:44:28 +0300 [thread overview]
Message-ID: <20090825144427.GA20726@jm.kir.nu> (raw)
When the queued management work items are processed in
ieee80211_sta_work() an item could be removed. This could change the
anybusy from true to false, so we better check whether we can start a
new scan only after having processed the pending work first.
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
---
net/mac80211/mlme.c | 28 ++++++++++++----------------
1 file changed, 12 insertions(+), 16 deletions(-)
--- uml.orig/net/mac80211/mlme.c 2009-08-25 17:29:08.000000000 +0300
+++ uml/net/mac80211/mlme.c 2009-08-25 17:32:04.000000000 +0300
@@ -2123,25 +2123,9 @@ static void ieee80211_sta_work(struct wo
}
}
- list_for_each_entry(wk, &ifmgd->work_list, list) {
- if (wk->state != IEEE80211_MGD_STATE_IDLE) {
- anybusy = true;
- break;
- }
- }
ieee80211_recalc_idle(local);
- if (!anybusy) {
- mutex_unlock(&ifmgd->mtx);
-
- if (test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request))
- ieee80211_queue_delayed_work(&local->hw,
- &local->scan_work,
- round_jiffies_relative(0));
- return;
- }
-
list_for_each_entry_safe(wk, tmp, &ifmgd->work_list, list) {
if (time_is_after_jiffies(wk->timeout)) {
/*
@@ -2187,6 +2171,18 @@ static void ieee80211_sta_work(struct wo
}
}
+ list_for_each_entry(wk, &ifmgd->work_list, list) {
+ if (wk->state != IEEE80211_MGD_STATE_IDLE) {
+ anybusy = true;
+ break;
+ }
+ }
+ if (!anybusy &&
+ test_and_clear_bit(IEEE80211_STA_REQ_SCAN, &ifmgd->request))
+ ieee80211_queue_delayed_work(&local->hw,
+ &local->scan_work,
+ round_jiffies_relative(0));
+
mutex_unlock(&ifmgd->mtx);
list_for_each_entry_safe(wk, tmp, &free_work, list) {
--
Jouni Malinen PGP id EFC895FA
reply other threads:[~2009-08-25 15:12 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20090825144427.GA20726@jm.kir.nu \
--to=jouni.malinen@atheros.com \
--cc=johannes@sipsolutions.net \
--cc=linux-wireless@vger.kernel.org \
--cc=linville@tuxdriver.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox