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Date: Thu, 15 Nov 2012 13:49:14 -0500
From: Vlad Yasevich <vyasevic@...hat.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, eric.dumazet@...il.com
Subject: [PATCH V2 05/14] 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@...hat.com>
---
include/net/protocol.h | 6 ------
net/ipv4/af_inet.c | 30 ++++++++++++++++--------------
2 files changed, 16 insertions(+), 20 deletions(-)
diff --git a/include/net/protocol.h b/include/net/protocol.h
index 637e1bb..3bb7051 100644
--- a/include/net/protocol.h
+++ b/include/net/protocol.h
@@ -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;
};
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 3918d86..66f63ce 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -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,
};
@@ -1726,6 +1720,14 @@ 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.
*/
--
1.7.7.6
--
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