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authorEric Dumazet <eric.dumazet@gmail.com>2010-11-10 23:42:00 +0000
committerDavid S. Miller <davem@davemloft.net>2010-11-16 11:15:08 -0800
commit4af429d29b341bb1735f04c2fb960178ed5d52e7 (patch)
treeb5179224883dc56cde57058014480e4bcf22b75b /net/8021q/vlan.c
parent8ffab51b3dfc54876f145f15b351c41f3f703195 (diff)
downloadlinux-4af429d29b341bb1735f04c2fb960178ed5d52e7.tar.bz2
vlan: lockless transmit path
vlan is a stacked device, like tunnels. We should use the lockless mechanism we are using in tunnels and loopback. This patch completely removes locking in TX path. tx stat counters are added into existing percpu stat structure, renamed from vlan_rx_stats to vlan_pcpu_stats. Note : this partially reverts commit 2e59af3dcbdf (vlan: multiqueue vlan device) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q/vlan.c')
-rw-r--r--net/8021q/vlan.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 55d2135889fc..dc1071327d87 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -272,13 +272,11 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id)
snprintf(name, IFNAMSIZ, "vlan%.4i", vlan_id);
}
- new_dev = alloc_netdev_mq(sizeof(struct vlan_dev_info), name,
- vlan_setup, real_dev->num_tx_queues);
+ new_dev = alloc_netdev(sizeof(struct vlan_dev_info), name, vlan_setup);
if (new_dev == NULL)
return -ENOBUFS;
- netif_copy_real_num_queues(new_dev, real_dev);
dev_net_set(new_dev, net);
/* need 4 bytes for extra VLAN header info,
* hope the underlying device can handle it.