From b8921ca83eed2496108ee308e9a41c5084089680 Mon Sep 17 00:00:00 2001 From: Tom Herbert Date: Wed, 18 May 2016 09:06:23 -0700 Subject: [PATCH] ip4ip6: Support for GSO/GRO Signed-off-by: Tom Herbert Signed-off-by: David S. Miller --- include/net/inet_common.h | 5 +++++ net/ipv4/af_inet.c | 12 +++++++----- net/ipv6/ip6_offload.c | 33 ++++++++++++++++++++++++++++++++- net/ipv6/ip6_tunnel.c | 5 +++++ 4 files changed, 49 insertions(+), 6 deletions(-) diff --git a/include/net/inet_common.h b/include/net/inet_common.h index 109e3ee9108c..5d683428fced 100644 --- a/include/net/inet_common.h +++ b/include/net/inet_common.h @@ -39,6 +39,11 @@ int inet_ctl_sock_create(struct sock **sk, unsigned short family, int inet_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len); +struct sk_buff **inet_gro_receive(struct sk_buff **head, struct sk_buff *skb); +int inet_gro_complete(struct sk_buff *skb, int nhoff); +struct sk_buff *inet_gso_segment(struct sk_buff *skb, + netdev_features_t features); + static inline void inet_ctl_sock_destroy(struct sock *sk) { if (sk) diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 25040b183a60..377424ea17a4 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1192,8 +1192,8 @@ int inet_sk_rebuild_header(struct sock *sk) } EXPORT_SYMBOL(inet_sk_rebuild_header); -static struct sk_buff *inet_gso_segment(struct sk_buff *skb, - netdev_features_t features) +struct sk_buff *inet_gso_segment(struct sk_buff *skb, + netdev_features_t features) { bool udpfrag = false, fixedid = false, encap; struct sk_buff *segs = ERR_PTR(-EINVAL); @@ -1280,9 +1280,9 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, out: return segs; } +EXPORT_SYMBOL(inet_gso_segment); -static struct sk_buff **inet_gro_receive(struct sk_buff **head, - struct sk_buff *skb) +struct sk_buff **inet_gro_receive(struct sk_buff **head, struct sk_buff *skb) { const struct net_offload *ops; struct sk_buff **pp = NULL; @@ -1398,6 +1398,7 @@ out: return pp; } +EXPORT_SYMBOL(inet_gro_receive); static struct sk_buff **ipip_gro_receive(struct sk_buff **head, struct sk_buff *skb) @@ -1449,7 +1450,7 @@ int inet_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len) return -EINVAL; } -static int inet_gro_complete(struct sk_buff *skb, int nhoff) +int inet_gro_complete(struct sk_buff *skb, int nhoff) { __be16 newlen = htons(skb->len - nhoff); struct iphdr *iph = (struct iphdr *)(skb->data + nhoff); @@ -1479,6 +1480,7 @@ out_unlock: return err; } +EXPORT_SYMBOL(inet_gro_complete); static int ipip_gro_complete(struct sk_buff *skb, int nhoff) { 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; } diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index d26d2269abec..823dad1e631b 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1188,6 +1188,11 @@ ip4ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev) if (t->parms.flags & IP6_TNL_F_USE_ORIG_FWMARK) fl6.flowi6_mark = skb->mark; + if (iptunnel_handle_offloads(skb, SKB_GSO_IPXIP6)) + return -1; + + skb_set_inner_ipproto(skb, IPPROTO_IPIP); + err = ip6_tnl_xmit(skb, dev, dsfield, &fl6, encap_limit, &mtu, IPPROTO_IPIP); if (err != 0) { -- 2.20.1