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| author | Eric Dumazet <edumazet@google.com> | 2013-10-20 20:47:30 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-10-21 18:49:39 -0400 |
| commit | 61c1db7fae21ed33c614356a43bf6580c5e53118 (patch) | |
| tree | 74e9756895dcf0006f57791684f6435d29c226ab /net/ipv6/ip6_offload.c | |
| parent | d3e5e0062de5f2c6444455b5708a62a50c93a50c (diff) | |
| download | lwn-61c1db7fae21ed33c614356a43bf6580c5e53118.tar.gz lwn-61c1db7fae21ed33c614356a43bf6580c5e53118.zip | |
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.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c index f9b33d82bb9d..4b851692b1f6 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; } |