[PATCH net-next 11/24] sctp: add SCTP_CURRENT_ASSOC for SCTP_STREAM_SCHEDULER_VALUE sockopt
From: Xin Long <lucien.xin@gmail.com>
Date: 2019-01-28 07:10:17
Also in:
linux-sctp
Subsystem:
networking [general], sctp protocol, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Marcelo Ricardo Leitner, Xin Long, Linus Torvalds
SCTP_STREAM_SCHEDULER_VALUE is a special one, as its value is not save in sctp_sock, but only in asoc. So only SCTP_CURRENT_ASSOC reserved assoc_id can be used in sctp_setsockopt_scheduler_value. This patch adds SCTP_CURRENT_ASOC support for SCTP_STREAM_SCHEDULER_VALUE. Signed-off-by: Xin Long <lucien.xin@gmail.com> --- net/sctp/socket.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-)
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index b9263ad..bf91591 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c@@ -4211,8 +4211,8 @@ static int sctp_setsockopt_scheduler_value(struct sock *sk, char __user *optval, unsigned int optlen) { - struct sctp_association *asoc; struct sctp_stream_value params; + struct sctp_association *asoc; int retval = -EINVAL; if (optlen < sizeof(params))
@@ -4225,11 +4225,24 @@ static int sctp_setsockopt_scheduler_value(struct sock *sk, } asoc = sctp_id2assoc(sk, params.assoc_id); - if (!asoc) + if (!asoc && params.assoc_id != SCTP_CURRENT_ASSOC && + sctp_style(sk, UDP)) goto out; - retval = sctp_sched_set_value(asoc, params.stream_id, - params.stream_value, GFP_KERNEL); + if (asoc) { + retval = sctp_sched_set_value(asoc, params.stream_id, + params.stream_value, GFP_KERNEL); + goto out; + } + + retval = 0; + + list_for_each_entry(asoc, &sctp_sk(sk)->ep->asocs, asocs) { + int ret = sctp_sched_set_value(asoc, params.stream_id, + params.stream_value, GFP_KERNEL); + if (ret && !retval) /* try to return the 1st error. */ + retval = ret; + } out: return retval;
--
2.1.0