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mac80211: decouple # of netdev queues from HW queues 

When we get more hardware queues, we'll still want
to only have netdev queues per AC, so set it up in
that way. If the hardware doesn't support QoS (by
not supporting at least 4 queues) the netdevs get
a single queue only (this is no change in behavior
as there are no drivers with 2 or 3 queues today.)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2012-03-28 11:04:26 +02:00 committed by John W. Linville
parent 54bcbc695e
commit ded81f6ba9
2 changed files with 6 additions and 2 deletions
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6
net/mac80211/iface.c
View File

@ -1133,11 +1133,15 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
struct net_device *ndev;
struct ieee80211_sub_if_data *sdata = NULL;
int ret, i;
int txqs = 1;
ASSERT_RTNL();
if (local->hw.queues >= IEEE80211_NUM_ACS)
txqs = IEEE80211_NUM_ACS;
ndev = alloc_netdev_mqs(sizeof(*sdata) + local->hw.vif_data_size,
name, ieee80211_if_setup, local->hw.queues, 1);
name, ieee80211_if_setup, txqs, 1);
if (!ndev)
return -ENOMEM;
dev_net_set(ndev, wiphy_net(local->hw.wiphy));

2
net/mac80211/wme.c
View File

@ -108,7 +108,7 @@ u16 ieee80211_select_queue(struct ieee80211_sub_if_data *sdata,
if (local->hw.queues < 4 || skb->len < 6) {
skb->priority = 0; /* required for correct WPA/11i MIC */
return min_t(u16, local->hw.queues - 1, IEEE80211_AC_BE);
return 0;
}
rcu_read_lock();