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ipip: capture inner headers during encapsulation

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Allow IPIP to make use of tx-checksum offloading.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pravin B Shelar 2013-03-08 15:12:52 +00:00 committed by David S. Miller
parent 8344bfc600
commit 4f3ed9209f
1 changed files with 7 additions and 6 deletions
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13
net/ipv4/ipip.c
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@ -483,11 +483,6 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
if (skb->protocol != htons(ETH_P_IP))
goto tx_error;
if (skb->ip_summed == CHECKSUM_PARTIAL &&
skb_checksum_help(skb))
goto tx_error;
old_iph = ip_hdr(skb);
if (tos & 1)
@ -572,6 +567,13 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
old_iph = ip_hdr(skb);
}
if (!skb->encapsulation) {
skb_reset_inner_headers(skb);
skb->encapsulation = 1;
}
if (skb->ip_summed != CHECKSUM_PARTIAL)
skb->ip_summed = CHECKSUM_NONE;
skb->transport_header = skb->network_header;
skb_push(skb, sizeof(struct iphdr));
skb_reset_network_header(skb);
@ -599,7 +601,6 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
iph->ttl = old_iph->ttl;
nf_reset(skb);
skb->ip_summed = CHECKSUM_NONE;
pkt_len = skb->len - skb_transport_offset(skb);
err = ip_local_out(skb);