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authorEric Dumazet <edumazet@google.com>2013-10-20 20:47:30 -0700
committerDavid S. Miller <davem@davemloft.net>2013-10-21 18:49:39 -0400
commit61c1db7fae21ed33c614356a43bf6580c5e53118 (patch)
tree74e9756895dcf0006f57791684f6435d29c226ab /net/ipv6/ip6_offload.c
parentd3e5e0062de5f2c6444455b5708a62a50c93a50c (diff)
downloadop-kernel-dev-61c1db7fae21ed33c614356a43bf6580c5e53118.zip
op-kernel-dev-61c1db7fae21ed33c614356a43bf6580c5e53118.tar.gz
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 <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_offload.c')
-rw-r--r--net/ipv6/ip6_offload.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index f9b33d8..4b85169 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -98,6 +98,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
SKB_GSO_TCP_ECN |
SKB_GSO_GRE |
SKB_GSO_IPIP |
+ SKB_GSO_SIT |
SKB_GSO_UDP_TUNNEL |
SKB_GSO_MPLS |
SKB_GSO_TCPV6 |
@@ -276,6 +277,13 @@ static struct packet_offload ipv6_packet_offload __read_mostly = {
},
};
+static const struct net_offload sit_offload = {
+ .callbacks = {
+ .gso_send_check = ipv6_gso_send_check,
+ .gso_segment = ipv6_gso_segment,
+ },
+};
+
static int __init ipv6_offload_init(void)
{
@@ -287,6 +295,9 @@ static int __init ipv6_offload_init(void)
pr_crit("%s: Cannot add EXTHDRS protocol offload\n", __func__);
dev_add_offload(&ipv6_packet_offload);
+
+ inet_add_offload(&sit_offload, IPPROTO_IPV6);
+
return 0;
}
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