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sctp: adjust some codes in a better order in sctp_sendmsg 

sctp_sendmsg_new_asoc and SCTP_ADDR_OVER check is only necessary
when daddr is set, so move them up to if (daddr) statement.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long 2018-03-01 23:05:18 +08:00 committed by David S. Miller
parent 007b7e18be
commit 0a3920d28b
1 changed files with 18 additions and 18 deletions
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36
net/sctp/socket.c
View File

@ -1936,38 +1936,38 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len)
lock_sock(sk);
/* If a msg_name has been specified, assume this is to be used. */
/* Get and check or create asoc */
if (daddr) {
/* Look for a matching association on the endpoint. */
asoc = sctp_endpoint_lookup_assoc(ep, daddr, &transport);
if (asoc) {
err = sctp_sendmsg_check_sflags(asoc, sflags, msg,
msg_len);
if (err <= 0)
goto out_unlock;
} else {
err = sctp_sendmsg_new_asoc(sk, sflags, &cmsgs, daddr,
&transport);
if (err)
goto out_unlock;
asoc = transport->asoc;
new = true;
}
if (!sctp_style(sk, TCP) && !(sflags & SCTP_ADDR_OVER))
transport = NULL;
} else {
asoc = sctp_id2assoc(sk, sinfo->sinfo_assoc_id);
if (!asoc) {
err = -EPIPE;
goto out_unlock;
}
}
if (asoc) {
err = sctp_sendmsg_check_sflags(asoc, sflags, msg, msg_len);
if (err <= 0)
goto out_unlock;
}
/* Do we need to create the association? */
if (!asoc) {
err = sctp_sendmsg_new_asoc(sk, sflags, &cmsgs, daddr,
&transport);
if (err)
goto out_unlock;
asoc = transport->asoc;
new = true;
}
if (!sctp_style(sk, TCP) && !(sflags & SCTP_ADDR_OVER))
transport = NULL;
/* Update snd_info with the asoc */
sctp_sendmsg_update_sinfo(asoc, sinfo, &cmsgs);