diff options
author | John Fastabend <john.r.fastabend@intel.com> | 2010-10-30 16:22:42 +0200 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2010-11-15 19:11:40 +0100 |
commit | 636e19a34275d7d6fda0fefa965b1e2a715e2b02 (patch) | |
tree | 134160c8880adef0d9afc159da22dc577b9fa3c8 /net/8021q/vlan_dev.c | |
parent | net: remove check for headroom in vlan_dev_create (diff) | |
download | linux-636e19a34275d7d6fda0fefa965b1e2a715e2b02.tar.xz linux-636e19a34275d7d6fda0fefa965b1e2a715e2b02.zip |
net: consolidate 8021q tagging
Now that VLAN packets are tagged in dev_hard_start_xmit()
at the bottom of the stack we no longer need to tag them
in the 8021Q module (Except in the !VLAN_FLAG_REORDER_HDR
case).
This allows the accel path and non accel paths to be consolidated.
Here the vlan_tci in the skb is always set and we allow the
stack to add the actual tag in dev_hard_start_xmit().
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q/vlan_dev.c')
-rw-r--r-- | net/8021q/vlan_dev.c | 105 |
1 files changed, 7 insertions, 98 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index afb03c5a7adc..f3c9552f6ba8 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -323,24 +323,12 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, */ if (veth->h_vlan_proto != htons(ETH_P_8021Q) || vlan_dev_info(dev)->flags & VLAN_FLAG_REORDER_HDR) { - unsigned int orig_headroom = skb_headroom(skb); u16 vlan_tci; - - vlan_dev_info(dev)->cnt_encap_on_xmit++; - vlan_tci = vlan_dev_info(dev)->vlan_id; vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); - skb = __vlan_put_tag(skb, vlan_tci); - if (!skb) { - txq->tx_dropped++; - return NETDEV_TX_OK; - } - - if (orig_headroom < VLAN_HLEN) - vlan_dev_info(dev)->cnt_inc_headroom_on_tx++; + skb = __vlan_hwaccel_put_tag(skb, vlan_tci); } - skb_set_dev(skb, vlan_dev_info(dev)->real_dev); len = skb->len; ret = dev_queue_xmit(skb); @@ -354,32 +342,6 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, return ret; } -static netdev_tx_t vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - int i = skb_get_queue_mapping(skb); - struct netdev_queue *txq = netdev_get_tx_queue(dev, i); - u16 vlan_tci; - unsigned int len; - int ret; - - vlan_tci = vlan_dev_info(dev)->vlan_id; - vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb); - skb = __vlan_hwaccel_put_tag(skb, vlan_tci); - - skb->dev = vlan_dev_info(dev)->real_dev; - len = skb->len; - ret = dev_queue_xmit(skb); - - if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { - txq->tx_packets++; - txq->tx_bytes += len; - } else - txq->tx_dropped++; - - return ret; -} - static u16 vlan_dev_select_queue(struct net_device *dev, struct sk_buff *skb) { struct net_device *rdev = vlan_dev_info(dev)->real_dev; @@ -716,8 +678,7 @@ static const struct header_ops vlan_header_ops = { .parse = eth_header_parse, }; -static const struct net_device_ops vlan_netdev_ops, vlan_netdev_accel_ops, - vlan_netdev_ops_sq, vlan_netdev_accel_ops_sq; +static const struct net_device_ops vlan_netdev_ops, vlan_netdev_ops_sq; static int vlan_dev_init(struct net_device *dev) { @@ -752,19 +713,16 @@ static int vlan_dev_init(struct net_device *dev) if (real_dev->features & NETIF_F_HW_VLAN_TX) { dev->header_ops = real_dev->header_ops; dev->hard_header_len = real_dev->hard_header_len; - if (real_dev->netdev_ops->ndo_select_queue) - dev->netdev_ops = &vlan_netdev_accel_ops_sq; - else - dev->netdev_ops = &vlan_netdev_accel_ops; } else { dev->header_ops = &vlan_header_ops; dev->hard_header_len = real_dev->hard_header_len + VLAN_HLEN; - if (real_dev->netdev_ops->ndo_select_queue) - dev->netdev_ops = &vlan_netdev_ops_sq; - else - dev->netdev_ops = &vlan_netdev_ops; } + if (real_dev->netdev_ops->ndo_select_queue) + dev->netdev_ops = &vlan_netdev_ops_sq; + else + dev->netdev_ops = &vlan_netdev_ops; + if (is_vlan_dev(real_dev)) subclass = 1; @@ -905,30 +863,6 @@ static const struct net_device_ops vlan_netdev_ops = { #endif }; -static const struct net_device_ops vlan_netdev_accel_ops = { - .ndo_change_mtu = vlan_dev_change_mtu, - .ndo_init = vlan_dev_init, - .ndo_uninit = vlan_dev_uninit, - .ndo_open = vlan_dev_open, - .ndo_stop = vlan_dev_stop, - .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = vlan_dev_set_mac_address, - .ndo_set_rx_mode = vlan_dev_set_rx_mode, - .ndo_set_multicast_list = vlan_dev_set_rx_mode, - .ndo_change_rx_flags = vlan_dev_change_rx_flags, - .ndo_do_ioctl = vlan_dev_ioctl, - .ndo_neigh_setup = vlan_dev_neigh_setup, - .ndo_get_stats64 = vlan_dev_get_stats64, -#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) - .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, - .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, - .ndo_fcoe_enable = vlan_dev_fcoe_enable, - .ndo_fcoe_disable = vlan_dev_fcoe_disable, - .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, -#endif -}; - static const struct net_device_ops vlan_netdev_ops_sq = { .ndo_select_queue = vlan_dev_select_queue, .ndo_change_mtu = vlan_dev_change_mtu, @@ -954,31 +888,6 @@ static const struct net_device_ops vlan_netdev_ops_sq = { #endif }; -static const struct net_device_ops vlan_netdev_accel_ops_sq = { - .ndo_select_queue = vlan_dev_select_queue, - .ndo_change_mtu = vlan_dev_change_mtu, - .ndo_init = vlan_dev_init, - .ndo_uninit = vlan_dev_uninit, - .ndo_open = vlan_dev_open, - .ndo_stop = vlan_dev_stop, - .ndo_start_xmit = vlan_dev_hwaccel_hard_start_xmit, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = vlan_dev_set_mac_address, - .ndo_set_rx_mode = vlan_dev_set_rx_mode, - .ndo_set_multicast_list = vlan_dev_set_rx_mode, - .ndo_change_rx_flags = vlan_dev_change_rx_flags, - .ndo_do_ioctl = vlan_dev_ioctl, - .ndo_neigh_setup = vlan_dev_neigh_setup, - .ndo_get_stats64 = vlan_dev_get_stats64, -#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE) - .ndo_fcoe_ddp_setup = vlan_dev_fcoe_ddp_setup, - .ndo_fcoe_ddp_done = vlan_dev_fcoe_ddp_done, - .ndo_fcoe_enable = vlan_dev_fcoe_enable, - .ndo_fcoe_disable = vlan_dev_fcoe_disable, - .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, -#endif -}; - void vlan_setup(struct net_device *dev) { ether_setup(dev); |