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| author | Pravin B Shelar | 2013-08-19 20:23:29 +0200 |
|---|---|---|
| committer | David S. Miller | 2013-08-20 09:15:44 +0200 |
| commit | 1eaa81785a70082213d40de14ec13520b5c6fff2 (patch) | |
| tree | d4f9ad4fe59dcbca3cb874632aa354e3b266dae3 /drivers/net/vxlan.c | |
| parent | vxlan: Improve vxlan headroom calculation. (diff) | |
| download | kernel-qcow2-linux-1eaa81785a70082213d40de14ec13520b5c6fff2.tar.gz kernel-qcow2-linux-1eaa81785a70082213d40de14ec13520b5c6fff2.tar.xz kernel-qcow2-linux-1eaa81785a70082213d40de14ec13520b5c6fff2.zip | |
vxlan: Add tx-vlan offload support.
Following patch allows transmit side vlan offload for vxlan
devices.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vxlan.c')
| -rw-r--r-- | drivers/net/vxlan.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index 73e255788fae..b9401b53b699 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -27,6 +27,7 @@ #include <linux/igmp.h> #include <linux/etherdevice.h> #include <linux/if_ether.h> +#include <linux/if_vlan.h> #include <linux/hash.h> #include <linux/ethtool.h> #include <net/arp.h> @@ -1139,13 +1140,23 @@ int vxlan_xmit_skb(struct net *net, struct vxlan_sock *vs, } min_headroom = LL_RESERVED_SPACE(rt->dst.dev) + rt->dst.header_len - + VXLAN_HLEN + sizeof(struct iphdr); + + VXLAN_HLEN + sizeof(struct iphdr) + + (vlan_tx_tag_present(skb) ? VLAN_HLEN : 0); /* Need space for new headers (invalidates iph ptr) */ err = skb_cow_head(skb, min_headroom); if (unlikely(err)) return err; + if (vlan_tx_tag_present(skb)) { + if (WARN_ON(!__vlan_put_tag(skb, + skb->vlan_proto, + vlan_tx_tag_get(skb)))) + return -ENOMEM; + + skb->vlan_tci = 0; + } + vxh = (struct vxlanhdr *) __skb_push(skb, sizeof(*vxh)); vxh->vx_flags = htonl(VXLAN_FLAGS); vxh->vx_vni = vni; @@ -1560,8 +1571,11 @@ static void vxlan_setup(struct net_device *dev) dev->features |= NETIF_F_RXCSUM; dev->features |= NETIF_F_GSO_SOFTWARE; + dev->vlan_features = dev->features; + dev->features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX; dev->hw_features |= NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_RXCSUM; dev->hw_features |= NETIF_F_GSO_SOFTWARE; + dev->hw_features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX; dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; dev->priv_flags |= IFF_LIVE_ADDR_CHANGE; |