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ipv4: Switch to using the new offload infrastructure. 

Switch IPv4 code base to using the new GRO/GSO calls and data.

Signed-off-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Yasevich 2012-11-15 08:49:14 +00:00 committed by David S. Miller
parent 8ca896cfdd
commit bca49f843e
2 changed files with 16 additions and 20 deletions
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6
include/net/protocol.h
View File

@ -40,12 +40,6 @@ struct net_protocol {
void (*early_demux)(struct sk_buff *skb);
int (*handler)(struct sk_buff *skb);
void (*err_handler)(struct sk_buff *skb, u32 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 no_policy:1,
netns_ok:1;
};

30
net/ipv4/af_inet.c
View File

@ -1251,7 +1251,7 @@ EXPORT_SYMBOL(inet_sk_rebuild_header);
static int inet_gso_send_check(struct sk_buff *skb)
{
const struct net_protocol *ops;
const struct net_offload *ops;
const struct iphdr *iph;
int proto;
int ihl;
@ -1275,7 +1275,7 @@ static int inet_gso_send_check(struct sk_buff *skb)
err = -EPROTONOSUPPORT;
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
ops = rcu_dereference(inet_offloads[proto]);
if (likely(ops && ops->gso_send_check))
err = ops->gso_send_check(skb);
rcu_read_unlock();
@ -1288,7 +1288,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
netdev_features_t features)
{
struct sk_buff *segs = ERR_PTR(-EINVAL);
const struct net_protocol *ops;
const struct net_offload *ops;
struct iphdr *iph;
int proto;
int ihl;
@ -1325,7 +1325,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
segs = ERR_PTR(-EPROTONOSUPPORT);
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
ops = rcu_dereference(inet_offloads[proto]);
if (likely(ops && ops->gso_segment))
segs = ops->gso_segment(skb, features);
rcu_read_unlock();
@ -1356,7 +1356,7 @@ out:
static struct sk_buff **inet_gro_receive(struct sk_buff **head,
struct sk_buff *skb)
{
const struct net_protocol *ops;
const struct net_offload *ops;
struct sk_buff **pp = NULL;
struct sk_buff *p;
const struct iphdr *iph;
@ -1378,7 +1378,7 @@ static struct sk_buff **inet_gro_receive(struct sk_buff **head,
proto = iph->protocol;
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
ops = rcu_dereference(inet_offloads[proto]);
if (!ops || !ops->gro_receive)
goto out_unlock;
@ -1435,7 +1435,7 @@ static int inet_gro_complete(struct sk_buff *skb)
{
__be16 newlen = htons(skb->len - skb_network_offset(skb));
struct iphdr *iph = ip_hdr(skb);
const struct net_protocol *ops;
const struct net_offload *ops;
int proto = iph->protocol;
int err = -ENOSYS;
@ -1443,7 +1443,7 @@ static int inet_gro_complete(struct sk_buff *skb)
iph->tot_len = newlen;
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
ops = rcu_dereference(inet_offloads[proto]);
if (WARN_ON(!ops || !ops->gro_complete))
goto out_unlock;
@ -1558,10 +1558,6 @@ static const struct net_protocol tcp_protocol = {
.early_demux = tcp_v4_early_demux,
.handler = tcp_v4_rcv,
.err_handler = tcp_v4_err,
.gso_send_check = tcp_v4_gso_send_check,
.gso_segment = tcp_tso_segment,
.gro_receive = tcp4_gro_receive,
.gro_complete = tcp4_gro_complete,
.no_policy = 1,
.netns_ok = 1,
};
@ -1576,8 +1572,6 @@ static const struct net_offload tcp_offload = {
static const struct net_protocol udp_protocol = {
.handler = udp_rcv,
.err_handler = udp_err,
.gso_send_check = udp4_ufo_send_check,
.gso_segment = udp4_ufo_fragment,
.no_policy = 1,
.netns_ok = 1,
};
@ -1725,6 +1719,14 @@ static int __init inet_init(void)
tcp_prot.sysctl_mem = init_net.ipv4.sysctl_tcp_mem;
/*
* Add offloads
*/
if (inet_add_offload(&udp_offload, IPPROTO_UDP) < 0)
pr_crit("%s: Cannot add UDP protocol offload\n", __func__);
if (inet_add_offload(&tcp_offload, IPPROTO_TCP) < 0)
pr_crit("%s: Cannot add TCP protocol offlaod\n", __func__);
/*
* Add all the base protocols.
*/