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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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33
net/ipv6/ip6_offload.c
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@@ -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;
}