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raw: avoid two atomics in xmit

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Avoid two atomic ops per raw_send_hdrinc() call

Avoid two atomic ops per raw6_send_hdrinc() call

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2010-06-03 22:23:57 +00:00
committed by David S. Miller
parent fe33147a58
commit 1789a640f5
2 changed files with 12 additions and 8 deletions
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8
net/ipv4/raw.c
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@@ -314,7 +314,7 @@ int raw_rcv(struct sock *sk, struct sk_buff *skb)
}
static int raw_send_hdrinc(struct sock *sk, void *from, size_t length,
struct rtable *rt,
struct rtable **rtp,
unsigned int flags)
{
struct inet_sock *inet = inet_sk(sk);
@@ -323,6 +323,7 @@ static int raw_send_hdrinc(struct sock *sk, void *from, size_t length,
struct sk_buff *skb;
unsigned int iphlen;
int err;
struct rtable *rt = *rtp;
if (length > rt->u.dst.dev->mtu) {
ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->inet_dport,
@@ -341,7 +342,8 @@ static int raw_send_hdrinc(struct sock *sk, void *from, size_t length,
skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark;
skb_dst_set(skb, dst_clone(&rt->u.dst));
skb_dst_set(skb, &rt->u.dst);
*rtp = NULL;
skb_reset_network_header(skb);
iph = ip_hdr(skb);
@@ -576,7 +578,7 @@ back_from_confirm:
if (inet->hdrincl)
err = raw_send_hdrinc(sk, msg->msg_iov, len,
rt, msg->msg_flags);
&rt, msg->msg_flags);
else {
if (!ipc.addr)