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mac80211: allow configure_filter callback to sleep

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Over time, a whole bunch of drivers have come up
with their own scheme to delay the configure_filter
operation to a workqueue. To be able to simplify
things, allow configure_filter to sleep, and add
a new prepare_multicast callback that drivers that
need the multicast address list implement. This new
callback must be atomic, but most drivers either
don't care or just calculate a hash which can be
done atomically and then uploaded to the hardware
non-atomically.

A cursory look suggests that at76c50x-usb, ar9170,
mwl8k (which is actually very broken now), rt2x00,
wl1251, wl1271 and zd1211 should make use of this
new capability.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-08-17 16:16:53 +02:00
committed by John W. Linville
parent ea416a793d
commit 3ac64beecd
28 changed files with 298 additions and 170 deletions
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2
net/mac80211/util.c
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@@ -1076,9 +1076,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
/* reconfigure hardware */
ieee80211_hw_config(local, ~0);
spin_lock_bh(&local->filter_lock);
ieee80211_configure_filter(local);
spin_unlock_bh(&local->filter_lock);
/* Finally also reconfigure all the BSS information */
list_for_each_entry(sdata, &local->interfaces, list) {