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Commit 3336288a authored by Vlad Yasevich's avatar Vlad Yasevich Committed by David S. Miller
Browse files

ipv6: Switch to using new offload infrastructure. 



Switch IPv6 protocol to using the new GRO/GSO calls and data.

Signed-off-by: default avatarVlad Yasevich <vyasevic@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bca49f84

include/net/protocol.h

+0 −8
Original line number Diff line number Diff line
@@ -54,14 +54,6 @@ struct inet6_protocol { 
			       struct inet6_skb_parm *opt,

			       u8 type, u8 code, int offset,

			       __be32 info);



	int	(*gso_send_check)(struct sk_buff *skb);

	struct sk_buff *(*gso_segment)(struct sk_buff *skb,

				       netdev_features_t features);

	struct sk_buff **(*gro_receive)(struct sk_buff **head,

					struct sk_buff *skb);

	int	(*gro_complete)(struct sk_buff *skb);



	unsigned int	flags;	/* INET6_PROTO_xxx */

};

net/ipv6/af_inet6.c

+11 −11
Original line number Diff line number Diff line
@@ -701,14 +701,14 @@ EXPORT_SYMBOL_GPL(ipv6_opt_accepted); 


static int ipv6_gso_pull_exthdrs(struct sk_buff *skb, int proto)

{

	const struct inet6_protocol *ops = NULL;

	const struct net_offload *ops = NULL;



	for (;;) {

		struct ipv6_opt_hdr *opth;

		int len;



		if (proto != NEXTHDR_HOP) {

			ops = rcu_dereference(inet6_protos[proto]);

			ops = rcu_dereference(inet6_offloads[proto]);



			if (unlikely(!ops))

				break;
@@ -736,7 +736,7 @@ static int ipv6_gso_pull_exthdrs(struct sk_buff *skb, int proto) 
static int ipv6_gso_send_check(struct sk_buff *skb)

{

	const struct ipv6hdr *ipv6h;

	const struct inet6_protocol *ops;

	const struct net_offload *ops;

	int err = -EINVAL;



	if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
@@ -747,7 +747,7 @@ static int ipv6_gso_send_check(struct sk_buff *skb) 
	err = -EPROTONOSUPPORT;



	rcu_read_lock();

	ops = rcu_dereference(inet6_protos[

	ops = rcu_dereference(inet6_offloads[

		ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr)]);



	if (likely(ops && ops->gso_send_check)) {
@@ -765,7 +765,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, 
{

	struct sk_buff *segs = ERR_PTR(-EINVAL);

	struct ipv6hdr *ipv6h;

	const struct inet6_protocol *ops;

	const struct net_offload *ops;

	int proto;

	struct frag_hdr *fptr;

	unsigned int unfrag_ip6hlen;
@@ -792,7 +792,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, 


	proto = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);

	rcu_read_lock();

	ops = rcu_dereference(inet6_protos[proto]);

	ops = rcu_dereference(inet6_offloads[proto]);

	if (likely(ops && ops->gso_segment)) {

		skb_reset_transport_header(skb);

		segs = ops->gso_segment(skb, features);
@@ -825,7 +825,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, 
static struct sk_buff **ipv6_gro_receive(struct sk_buff **head,

					 struct sk_buff *skb)

{

	const struct inet6_protocol *ops;

	const struct net_offload *ops;

	struct sk_buff **pp = NULL;

	struct sk_buff *p;

	struct ipv6hdr *iph;
@@ -852,7 +852,7 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head, 


	rcu_read_lock();

	proto = iph->nexthdr;

	ops = rcu_dereference(inet6_protos[proto]);

	ops = rcu_dereference(inet6_offloads[proto]);

	if (!ops || !ops->gro_receive) {

		__pskb_pull(skb, skb_gro_offset(skb));

		proto = ipv6_gso_pull_exthdrs(skb, proto);
@@ -860,7 +860,7 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head, 
		skb_reset_transport_header(skb);

		__skb_push(skb, skb_gro_offset(skb));



		ops = rcu_dereference(inet6_protos[proto]);

		ops = rcu_dereference(inet6_offloads[proto]);

		if (!ops || !ops->gro_receive)

			goto out_unlock;
@@ -915,7 +915,7 @@ static struct sk_buff **ipv6_gro_receive(struct sk_buff **head, 


static int ipv6_gro_complete(struct sk_buff *skb)

{

	const struct inet6_protocol *ops;

	const struct net_offload *ops;

	struct ipv6hdr *iph = ipv6_hdr(skb);

	int err = -ENOSYS;
@@ -923,7 +923,7 @@ static int ipv6_gro_complete(struct sk_buff *skb) 
				 sizeof(*iph));



	rcu_read_lock();

	ops = rcu_dereference(inet6_protos[NAPI_GRO_CB(skb)->proto]);

	ops = rcu_dereference(inet6_offloads[NAPI_GRO_CB(skb)->proto]);

	if (WARN_ON(!ops || !ops->gro_complete))

		goto out_unlock;

net/ipv6/exthdrs.c

+35 −3
Original line number Diff line number Diff line
@@ -549,14 +549,44 @@ static const struct inet6_protocol nodata_protocol = { 
	.flags		=	INET6_PROTO_NOPOLICY,

};



static int ipv6_exthdrs_offload_init(void)

{

	int ret;



	ret = inet6_add_offload(&rthdr_offload, IPPROTO_ROUTING);

	if (!ret)

		goto out;



	ret = inet6_add_offload(&dstopt_offload, IPPROTO_DSTOPTS);

	if (!ret)

		goto out_rt;



out:

	return ret;



out_rt:

	inet_del_offload(&rthdr_offload, IPPROTO_ROUTING);

	goto out;

}



static void ipv6_exthdrs_offload_exit(void)

{

	inet_del_offload(&rthdr_offload, IPPROTO_ROUTING);

	inet_del_offload(&rthdr_offload, IPPROTO_DSTOPTS);

}



int __init ipv6_exthdrs_init(void)

{

	int ret;



	ret = inet6_add_protocol(&rthdr_protocol, IPPROTO_ROUTING);

	ret = ipv6_exthdrs_offload_init();

	if (ret)

		goto out;



	ret = inet6_add_protocol(&rthdr_protocol, IPPROTO_ROUTING);

	if (ret)

		goto out_offload;



	ret = inet6_add_protocol(&destopt_protocol, IPPROTO_DSTOPTS);

	if (ret)

		goto out_rthdr;
@@ -567,10 +597,12 @@ int __init ipv6_exthdrs_init(void) 


out:

	return ret;

out_rthdr:

	inet6_del_protocol(&rthdr_protocol, IPPROTO_ROUTING);

out_destopt:

	inet6_del_protocol(&destopt_protocol, IPPROTO_DSTOPTS);

out_rthdr:

	inet6_del_protocol(&rthdr_protocol, IPPROTO_ROUTING);

out_offload:

	ipv6_exthdrs_offload_exit();

	goto out;

};

net/ipv6/tcp_ipv6.c

+10 −7
Original line number Diff line number Diff line
@@ -2066,10 +2066,6 @@ static const struct inet6_protocol tcpv6_protocol = { 
	.early_demux	=	tcp_v6_early_demux,

	.handler	=	tcp_v6_rcv,

	.err_handler	=	tcp_v6_err,

	.gso_send_check	=	tcp_v6_gso_send_check,

	.gso_segment	=	tcp_tso_segment,

	.gro_receive	=	tcp6_gro_receive,

	.gro_complete	=	tcp6_gro_complete,

	.flags		=	INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,

};
@@ -2116,10 +2112,14 @@ int __init tcpv6_init(void) 
{

	int ret;



	ret = inet6_add_protocol(&tcpv6_protocol, IPPROTO_TCP);

	ret = inet6_add_offload(&tcpv6_offload, IPPROTO_TCP);

	if (ret)

		goto out;



	ret = inet6_add_protocol(&tcpv6_protocol, IPPROTO_TCP);

	if (ret)

		goto out_offload;



	/* register inet6 protocol */

	ret = inet6_register_protosw(&tcpv6_protosw);

	if (ret)
@@ -2131,10 +2131,12 @@ int __init tcpv6_init(void) 
out:

	return ret;



out_tcpv6_protocol:

	inet6_del_protocol(&tcpv6_protocol, IPPROTO_TCP);

out_tcpv6_protosw:

	inet6_unregister_protosw(&tcpv6_protosw);

out_tcpv6_protocol:

	inet6_del_protocol(&tcpv6_protocol, IPPROTO_TCP);

out_offload:

	inet6_del_offload(&tcpv6_offload, IPPROTO_TCP);

	goto out;

}
@@ -2143,4 +2145,5 @@ void tcpv6_exit(void) 
	unregister_pernet_subsys(&tcpv6_net_ops);

	inet6_unregister_protosw(&tcpv6_protosw);

	inet6_del_protocol(&tcpv6_protocol, IPPROTO_TCP);

	inet6_del_offload(&tcpv6_offload, IPPROTO_TCP);

}

net/ipv6/udp.c

+8 −3
Original line number Diff line number Diff line
@@ -1438,8 +1438,6 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, 
static const struct inet6_protocol udpv6_protocol = {

	.handler	=	udpv6_rcv,

	.err_handler	=	udpv6_err,

	.gso_send_check =	udp6_ufo_send_check,

	.gso_segment	=	udp6_ufo_fragment,

	.flags		=	INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,

};
@@ -1570,10 +1568,14 @@ int __init udpv6_init(void) 
{

	int ret;



	ret = inet6_add_protocol(&udpv6_protocol, IPPROTO_UDP);

	ret = inet6_add_offload(&udpv6_offload, IPPROTO_UDP);

	if (ret)

		goto out;



	ret = inet6_add_protocol(&udpv6_protocol, IPPROTO_UDP);

	if (ret)

		goto out_offload;



	ret = inet6_register_protosw(&udpv6_protosw);

	if (ret)

		goto out_udpv6_protocol;
@@ -1582,6 +1584,8 @@ int __init udpv6_init(void) 


out_udpv6_protocol:

	inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);

out_offload:

	inet6_del_offload(&udpv6_offload, IPPROTO_UDP);

	goto out;

}
@@ -1589,4 +1593,5 @@ void udpv6_exit(void) 
{

	inet6_unregister_protosw(&udpv6_protosw);

	inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);

	inet6_del_offload(&udpv6_offload, IPPROTO_UDP);

}