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udp6: shuffle up->pending AF_INET bits

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Corked AF_INET for ipv6 socket doesn't appear to be the hottest case,
so move it out of the common path under up->pending check to remove
overhead.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Pavel Begunkov 2022-01-27 00:36:23 +00:00 committed by Jakub Kicinski
parent cd3c748077
commit 406c4a0af0
1 changed files with 2 additions and 3 deletions
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5
net/ipv6/udp.c
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@ -1363,9 +1363,6 @@ int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
}
}
if (up->pending == AF_INET)
return udp_sendmsg(sk, msg, len);
/* Rough check on arithmetic overflow,
better check is made in ip6_append_data().
*/
@ -1374,6 +1371,8 @@ int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag;
if (up->pending) {
if (up->pending == AF_INET)
return udp_sendmsg(sk, msg, len);
/*
* There are pending frames.
* The socket lock must be held while it's corked.