From b8921ca83eed2496108ee308e9a41c5084089680 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Wed, 18 May 2016 09:06:23 -0700 Subject: ip4ip6: Support for GSO/GRO Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- net/ipv6/ip6_offload.c | 33 ++++++++++++++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) (limited to 'net/ipv6/ip6_offload.c') diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c index 332d6a03f182..22e90e56b5a9 100644 --- a/net/ipv6/ip6_offload.c +++ b/net/ipv6/ip6_offload.c @@ -16,6 +16,7 @@ #include #include +#include #include "ip6_offload.h" @@ -268,6 +269,21 @@ static struct sk_buff **sit_ip6ip6_gro_receive(struct sk_buff **head, return ipv6_gro_receive(head, skb); } +static struct sk_buff **ip4ip6_gro_receive(struct sk_buff **head, + struct sk_buff *skb) +{ + /* Common GRO receive for SIT and IP6IP6 */ + + if (NAPI_GRO_CB(skb)->encap_mark) { + NAPI_GRO_CB(skb)->flush = 1; + return NULL; + } + + NAPI_GRO_CB(skb)->encap_mark = 1; + + return inet_gro_receive(head, skb); +} + static int ipv6_gro_complete(struct sk_buff *skb, int nhoff) { const struct net_offload *ops; @@ -307,6 +323,13 @@ static int ip6ip6_gro_complete(struct sk_buff *skb, int nhoff) return ipv6_gro_complete(skb, nhoff); } +static int ip4ip6_gro_complete(struct sk_buff *skb, int nhoff) +{ + skb->encapsulation = 1; + skb_shinfo(skb)->gso_type |= SKB_GSO_IPXIP6; + return inet_gro_complete(skb, nhoff); +} + static struct packet_offload ipv6_packet_offload __read_mostly = { .type = cpu_to_be16(ETH_P_IPV6), .callbacks = { @@ -324,6 +347,14 @@ static const struct net_offload sit_offload = { }, }; +static const struct net_offload ip4ip6_offload = { + .callbacks = { + .gso_segment = inet_gso_segment, + .gro_receive = ip4ip6_gro_receive, + .gro_complete = ip4ip6_gro_complete, + }, +}; + static const struct net_offload ip6ip6_offload = { .callbacks = { .gso_segment = ipv6_gso_segment, @@ -331,7 +362,6 @@ static const struct net_offload ip6ip6_offload = { .gro_complete = ip6ip6_gro_complete, }, }; - static int __init ipv6_offload_init(void) { @@ -344,6 +374,7 @@ static int __init ipv6_offload_init(void) inet_add_offload(&sit_offload, IPPROTO_IPV6); inet6_add_offload(&ip6ip6_offload, IPPROTO_IPV6); + inet6_add_offload(&ip4ip6_offload, IPPROTO_IPIP); return 0; } -- cgit