From 007b7e18be74a49b61f89664966ac1477e1c9608 Mon Sep 17 00:00:00 2001 From: Xin Long Date: Thu, 1 Mar 2018 23:05:17 +0800 Subject: [PATCH] sctp: improve some variables in sctp_sendmsg This patch mostly is to: - rename sinfo_flags as sflags, to make the indents look better, and also keep consistent with other sctp_sendmsg_xx functions. - replace new_asoc with bool new, no need to define a pointer here, as if new_asoc is set, it must be asoc. - rename the 'out_nounlock:' as 'out', shorter and nicer. - remove associd, only one place is using it now, just use sinfo->sinfo_assoc_id directly. - remove 'cmsgs' initialization in sctp_sendmsg, as it will be done in sctp_sendmsg_parse. Signed-off-by: Xin Long Signed-off-by: David S. Miller --- net/sctp/socket.c | 29 ++++++++++++++--------------- 1 file changed, 14 insertions(+), 15 deletions(-) diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 4260310..a1c78fc1 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -1910,28 +1910,28 @@ static void sctp_sendmsg_update_sinfo(struct sctp_association *asoc, static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len) { struct sctp_endpoint *ep = sctp_sk(sk)->ep; - struct sctp_association *new_asoc = NULL, *asoc = NULL; struct sctp_transport *transport = NULL; struct sctp_sndrcvinfo _sinfo, *sinfo; - sctp_assoc_t associd = 0; - struct sctp_cmsgs cmsgs = { NULL }; - __u16 sinfo_flags = 0; + struct sctp_association *asoc; + struct sctp_cmsgs cmsgs; union sctp_addr *daddr; + bool new = false; + __u16 sflags; int err; /* Parse and get snd_info */ err = sctp_sendmsg_parse(sk, &cmsgs, &_sinfo, msg, msg_len); if (err) - goto out_nounlock; + goto out; sinfo = &_sinfo; - sinfo_flags = sinfo->sinfo_flags; + sflags = sinfo->sinfo_flags; /* Get daddr from msg */ daddr = sctp_sendmsg_get_daddr(sk, msg, &cmsgs); if (IS_ERR(daddr)) { err = PTR_ERR(daddr); - goto out_nounlock; + goto out; } lock_sock(sk); @@ -1941,7 +1941,7 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len) /* Look for a matching association on the endpoint. */ asoc = sctp_endpoint_lookup_assoc(ep, daddr, &transport); } else { - asoc = sctp_id2assoc(sk, associd); + asoc = sctp_id2assoc(sk, sinfo->sinfo_assoc_id); if (!asoc) { err = -EPIPE; goto out_unlock; @@ -1949,24 +1949,23 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len) } if (asoc) { - err = sctp_sendmsg_check_sflags(asoc, sinfo_flags, msg, - msg_len); + 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, sinfo_flags, &cmsgs, daddr, + err = sctp_sendmsg_new_asoc(sk, sflags, &cmsgs, daddr, &transport); if (err) goto out_unlock; asoc = transport->asoc; - new_asoc = asoc; + new = true; } - if (!sctp_style(sk, TCP) && !(sinfo_flags & SCTP_ADDR_OVER)) + if (!sctp_style(sk, TCP) && !(sflags & SCTP_ADDR_OVER)) transport = NULL; /* Update snd_info with the asoc */ @@ -1974,12 +1973,12 @@ static int sctp_sendmsg(struct sock *sk, struct msghdr *msg, size_t msg_len) /* Send msg to the asoc */ err = sctp_sendmsg_to_asoc(asoc, msg, msg_len, transport, sinfo); - if (err < 0 && err != -ESRCH && new_asoc) + if (err < 0 && err != -ESRCH && new) sctp_association_free(asoc); out_unlock: release_sock(sk); -out_nounlock: +out: return sctp_error(sk, msg->msg_flags, err); } -- 2.7.4