raw: avoid two atomics in xmit
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:
Родитель
fe33147a58
Коммит
1789a640f5
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@ -314,7 +314,7 @@ int raw_rcv(struct sock *sk, struct sk_buff *skb)
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}
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static int raw_send_hdrinc(struct sock *sk, void *from, size_t length,
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struct rtable *rt,
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struct rtable **rtp,
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unsigned int flags)
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{
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struct inet_sock *inet = inet_sk(sk);
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@ -323,6 +323,7 @@ static int raw_send_hdrinc(struct sock *sk, void *from, size_t length,
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struct sk_buff *skb;
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unsigned int iphlen;
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int err;
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struct rtable *rt = *rtp;
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if (length > rt->u.dst.dev->mtu) {
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ip_local_error(sk, EMSGSIZE, rt->rt_dst, inet->inet_dport,
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@ -341,7 +342,8 @@ static int raw_send_hdrinc(struct sock *sk, void *from, size_t length,
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skb->priority = sk->sk_priority;
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skb->mark = sk->sk_mark;
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skb_dst_set(skb, dst_clone(&rt->u.dst));
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skb_dst_set(skb, &rt->u.dst);
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*rtp = NULL;
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skb_reset_network_header(skb);
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iph = ip_hdr(skb);
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@ -576,7 +578,7 @@ back_from_confirm:
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if (inet->hdrincl)
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err = raw_send_hdrinc(sk, msg->msg_iov, len,
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rt, msg->msg_flags);
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&rt, msg->msg_flags);
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else {
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if (!ipc.addr)
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@ -602,13 +602,14 @@ out:
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}
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static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
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struct flowi *fl, struct rt6_info *rt,
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struct flowi *fl, struct dst_entry **dstp,
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unsigned int flags)
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{
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struct ipv6_pinfo *np = inet6_sk(sk);
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struct ipv6hdr *iph;
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struct sk_buff *skb;
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int err;
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struct rt6_info *rt = (struct rt6_info *)*dstp;
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if (length > rt->u.dst.dev->mtu) {
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ipv6_local_error(sk, EMSGSIZE, fl, rt->u.dst.dev->mtu);
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@ -626,7 +627,8 @@ static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
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skb->priority = sk->sk_priority;
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skb->mark = sk->sk_mark;
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skb_dst_set(skb, dst_clone(&rt->u.dst));
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skb_dst_set(skb, &rt->u.dst);
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*dstp = NULL;
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skb_put(skb, length);
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skb_reset_network_header(skb);
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@ -886,9 +888,9 @@ static int rawv6_sendmsg(struct kiocb *iocb, struct sock *sk,
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goto do_confirm;
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back_from_confirm:
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if (inet->hdrincl) {
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err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, (struct rt6_info*)dst, msg->msg_flags);
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} else {
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if (inet->hdrincl)
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err = rawv6_send_hdrinc(sk, msg->msg_iov, len, &fl, &dst, msg->msg_flags);
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else {
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lock_sock(sk);
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err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov,
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len, 0, hlimit, tclass, opt, &fl, (struct rt6_info*)dst,
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