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>

1 files changed, 5 insertions, 1 deletions

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 401c01f0731e..efa9409865ac 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -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));