From 61c1db7fae21ed33c614356a43bf6580c5e53118 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 20 Oct 2013 20:47:30 -0700 Subject: ipv6: sit: add GSO/TSO support Now ipv6_gso_segment() is stackable, its relatively easy to implement GSO/TSO support for SIT tunnels Performance results, when segmentation is done after tunnel device (as no NIC is yet enabled for TSO SIT support) : Before patch : lpq84:~# ./netperf -H 2002:af6:1153:: -Cc MIGRATED TCP STREAM TEST from ::0 (::) port 0 AF_INET6 to 2002:af6:1153:: () port 0 AF_INET6 Recv Send Send Utilization Service Demand Socket Socket Message Elapsed Send Recv Send Recv Size Size Size Time Throughput local remote local remote bytes bytes bytes secs. 10^6bits/s % S % S us/KB us/KB 87380 16384 16384 10.00 3168.31 4.81 4.64 2.988 2.877 After patch : lpq84:~# ./netperf -H 2002:af6:1153:: -Cc MIGRATED TCP STREAM TEST from ::0 (::) port 0 AF_INET6 to 2002:af6:1153:: () port 0 AF_INET6 Recv Send Send Utilization Service Demand Socket Socket Message Elapsed Send Recv Send Recv Size Size Size Time Throughput local remote local remote bytes bytes bytes secs. 10^6bits/s % S % S us/KB us/KB 87380 16384 16384 10.00 5525.00 7.76 5.17 2.763 1.840 Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/af_inet.c | 1 + net/ipv4/tcp_offload.c | 1 + 2 files changed, 2 insertions(+) (limited to 'net/ipv4') diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 24a53fc275b0..f4a159e705c0 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1265,6 +1265,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, SKB_GSO_TCP_ECN | SKB_GSO_GRE | SKB_GSO_IPIP | + SKB_GSO_SIT | SKB_GSO_TCPV6 | SKB_GSO_UDP_TUNNEL | SKB_GSO_MPLS | diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c index dfc96b00673e..a7a5583eab04 100644 --- a/net/ipv4/tcp_offload.c +++ b/net/ipv4/tcp_offload.c @@ -57,6 +57,7 @@ struct sk_buff *tcp_gso_segment(struct sk_buff *skb, SKB_GSO_TCPV6 | SKB_GSO_GRE | SKB_GSO_IPIP | + SKB_GSO_SIT | SKB_GSO_MPLS | SKB_GSO_UDP_TUNNEL | 0) || -- cgit v1.2.3-58-ga151