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ip4ip6: Support for GSO/GRO

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Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tom Herbert 2016-05-18 09:06:23 -07:00 committed by David S. Miller
parent 815d22e55b
commit b8921ca83e
4 changed files with 49 additions and 6 deletions
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5
include/net/inet_common.h
View File

@ -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)

12
net/ipv4/af_inet.c
View File

@ -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 @@ static struct sk_buff **inet_gro_receive(struct sk_buff **head,
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 @@ static int inet_gro_complete(struct sk_buff *skb, int nhoff)
return err;
}
EXPORT_SYMBOL(inet_gro_complete);
static int ipip_gro_complete(struct sk_buff *skb, int nhoff)
{

33
net/ipv6/ip6_offload.c
View File

@ -16,6 +16,7 @@
#include <net/protocol.h>
#include <net/ipv6.h>
#include <net/inet_common.h>
#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;
}

5
net/ipv6/ip6_tunnel.c
View File

@ -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) {