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authorPravin B Shelar <pshelar@nicira.com>2013-03-08 19:12:45 +0400
committerDavid S. Miller <davem@davemloft.net>2013-03-10 01:09:19 +0400
commit8344bfc6008d1c7b8b541bb25de7dfacb2188b95 (patch)
treebd3b346eee41d1517a07884e3a4112abf2b01d06 /net/ipv4/ipip.c
parent720a43efd30f04a0a492c85fb997361c44fbae05 (diff)
downloadlinux-8344bfc6008d1c7b8b541bb25de7dfacb2188b95.tar.xz
ipip: Use tunnel_ip_select_ident() for tunnel IP-Identification.
tunnel_ip_select_ident() is more efficient when generating ip-header id given inner packet is of ipv4 type. Signed-off-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ipip.c')
-rw-r--r--net/ipv4/ipip.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 8f024d41eefa..18f535299ef9 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -478,6 +478,8 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
__be32 dst = tiph->daddr;
struct flowi4 fl4;
int mtu;
+ int err;
+ int pkt_len;
if (skb->protocol != htons(ETH_P_IP))
goto tx_error;
@@ -591,11 +593,28 @@ static netdev_tx_t ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
iph->tos = INET_ECN_encapsulate(tos, old_iph->tos);
iph->daddr = fl4.daddr;
iph->saddr = fl4.saddr;
+ tunnel_ip_select_ident(skb, old_iph, &rt->dst);
if ((iph->ttl = tiph->ttl) == 0)
iph->ttl = old_iph->ttl;
- iptunnel_xmit(skb, dev);
+ nf_reset(skb);
+ skb->ip_summed = CHECKSUM_NONE;
+
+ pkt_len = skb->len - skb_transport_offset(skb);
+ err = ip_local_out(skb);
+ if (likely(net_xmit_eval(err) == 0)) {
+ struct pcpu_tstats *tstats = this_cpu_ptr(dev->tstats);
+
+ u64_stats_update_begin(&tstats->syncp);
+ tstats->tx_bytes += pkt_len;
+ tstats->tx_packets++;
+ u64_stats_update_end(&tstats->syncp);
+ } else {
+ dev->stats.tx_errors++;
+ dev->stats.tx_aborted_errors++;
+ }
+
return NETDEV_TX_OK;
tx_error_icmp: