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gre: add GSO support

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Add GSO support to GRE tunnels.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2012-09-13 21:25:33 +00:00 committed by David S. Miller
parent 2c60db0370
commit 6b78f16e4b
1 changed files with 12 additions and 0 deletions
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12
net/ipv4/ip_gre.c
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@ -745,6 +745,10 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
__be32 dst; __be32 dst;
int mtu; int mtu;
if (skb->ip_summed == CHECKSUM_PARTIAL &&
skb_checksum_help(skb))
goto tx_error;
if (dev->type == ARPHRD_ETHER) if (dev->type == ARPHRD_ETHER)
IPCB(skb)->flags = 0; IPCB(skb)->flags = 0;
@ -1296,6 +1300,11 @@ static void ipgre_dev_free(struct net_device *dev)
free_netdev(dev); free_netdev(dev);
} }
#define GRE_FEATURES (NETIF_F_SG | \
NETIF_F_FRAGLIST | \
NETIF_F_HIGHDMA | \
NETIF_F_HW_CSUM)
static void ipgre_tunnel_setup(struct net_device *dev) static void ipgre_tunnel_setup(struct net_device *dev)
{ {
dev->netdev_ops = &ipgre_netdev_ops; dev->netdev_ops = &ipgre_netdev_ops;
@ -1309,6 +1318,9 @@ static void ipgre_tunnel_setup(struct net_device *dev)
dev->addr_len = 4; dev->addr_len = 4;
dev->features |= NETIF_F_NETNS_LOCAL; dev->features |= NETIF_F_NETNS_LOCAL;
dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
dev->features |= GRE_FEATURES;
dev->hw_features |= GRE_FEATURES;
} }
static int ipgre_tunnel_init(struct net_device *dev) static int ipgre_tunnel_init(struct net_device *dev)