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Commit 22061d80 authored by Vlad Yasevich's avatar Vlad Yasevich Committed by David S. Miller
Browse files

net: Switch to using the new packet offload infrustructure 



Convert to using the new GSO/GRO registration mechanism and new
packet offload structure.

Signed-off-by: default avatarVlad Yasevich <vyasevic@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 62532da9

include/linux/netdevice.h

+0 −6
Original line number Diff line number Diff line
@@ -1509,12 +1509,6 @@ struct packet_type { 
					 struct net_device *,

					 struct packet_type *,

					 struct net_device *);

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

						netdev_features_t features);

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

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

					       struct sk_buff *skb);

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

	bool			(*id_match)(struct packet_type *ptype,

					    struct sock *sk);

	void			*af_packet_priv;

net/core/dev.c

+9 −10
Original line number Diff line number Diff line
@@ -2072,7 +2072,7 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, 
	netdev_features_t features)

{

	struct sk_buff *segs = ERR_PTR(-EPROTONOSUPPORT);

	struct packet_type *ptype;

	struct packet_offload *ptype;

	__be16 type = skb->protocol;

	int vlan_depth = ETH_HLEN;

	int err;
@@ -2101,9 +2101,8 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, 
	}



	rcu_read_lock();

	list_for_each_entry_rcu(ptype,

			&ptype_base[ntohs(type) & PTYPE_HASH_MASK], list) {

		if (ptype->type == type && !ptype->dev && ptype->gso_segment) {

	list_for_each_entry_rcu(ptype, &offload_base, list) {

		if (ptype->type == type && ptype->gso_segment) {

			if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) {

				err = ptype->gso_send_check(skb);

				segs = ERR_PTR(err);
@@ -3522,9 +3521,9 @@ static void flush_backlog(void *arg) 


static int napi_gro_complete(struct sk_buff *skb)

{

	struct packet_type *ptype;

	struct packet_offload *ptype;

	__be16 type = skb->protocol;

	struct list_head *head = &ptype_base[ntohs(type) & PTYPE_HASH_MASK];

	struct list_head *head = &offload_base;

	int err = -ENOENT;



	if (NAPI_GRO_CB(skb)->count == 1) {
@@ -3534,7 +3533,7 @@ static int napi_gro_complete(struct sk_buff *skb) 


	rcu_read_lock();

	list_for_each_entry_rcu(ptype, head, list) {

		if (ptype->type != type || ptype->dev || !ptype->gro_complete)

		if (ptype->type != type || !ptype->gro_complete)

			continue;



		err = ptype->gro_complete(skb);
@@ -3584,9 +3583,9 @@ EXPORT_SYMBOL(napi_gro_flush); 
enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb)

{

	struct sk_buff **pp = NULL;

	struct packet_type *ptype;

	struct packet_offload *ptype;

	__be16 type = skb->protocol;

	struct list_head *head = &ptype_base[ntohs(type) & PTYPE_HASH_MASK];

	struct list_head *head = &offload_base;

	int same_flow;

	int mac_len;

	enum gro_result ret;
@@ -3599,7 +3598,7 @@ enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff *skb) 


	rcu_read_lock();

	list_for_each_entry_rcu(ptype, head, list) {

		if (ptype->type != type || ptype->dev || !ptype->gro_receive)

		if (ptype->type != type || !ptype->gro_receive)

			continue;



		skb_set_network_header(skb, skb_gro_offset(skb));

net/ipv4/af_inet.c

+5 −0
Original line number Diff line number Diff line
@@ -1662,6 +1662,10 @@ static int ipv4_proc_init(void); 
static struct packet_type ip_packet_type __read_mostly = {

	.type = cpu_to_be16(ETH_P_IP),

	.func = ip_rcv,

};



static struct packet_offload ip_packet_offload __read_mostly = {

	.type = cpu_to_be16(ETH_P_IP),

	.gso_send_check = inet_gso_send_check,

	.gso_segment = inet_gso_segment,

	.gro_receive = inet_gro_receive,
@@ -1781,6 +1785,7 @@ static int __init inet_init(void) 


	ipfrag_init();



	dev_add_offload(&ip_packet_offload);

	dev_add_pack(&ip_packet_type);



	rc = 0;

net/ipv6/af_inet6.c

+6 −0
Original line number Diff line number Diff line
@@ -938,6 +938,10 @@ static int ipv6_gro_complete(struct sk_buff *skb) 
static struct packet_type ipv6_packet_type __read_mostly = {

	.type = cpu_to_be16(ETH_P_IPV6),

	.func = ipv6_rcv,

};



static struct packet_offload ipv6_packet_offload __read_mostly = {

	.type = cpu_to_be16(ETH_P_IPV6),

	.gso_send_check = ipv6_gso_send_check,

	.gso_segment = ipv6_gso_segment,

	.gro_receive = ipv6_gro_receive,
@@ -946,6 +950,7 @@ static struct packet_type ipv6_packet_type __read_mostly = { 


static int __init ipv6_packet_init(void)

{

	dev_add_offload(&ipv6_packet_offload);

	dev_add_pack(&ipv6_packet_type);

	return 0;

}
@@ -953,6 +958,7 @@ static int __init ipv6_packet_init(void) 
static void ipv6_packet_cleanup(void)

{

	dev_remove_pack(&ipv6_packet_type);

	dev_remove_offload(&ipv6_packet_offload);

}



static int __net_init ipv6_init_mibs(struct net *net)