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authorXin Long <lucien.xin@gmail.com>2019-01-28 15:08:33 +0800
committerDavid S. Miller <davem@davemloft.net>2019-01-30 00:44:07 -0800
commite7f282489123d88f5d412c837775e3e8c0f5521f (patch)
tree94b44961e66191f84bb7dc74d349b0d047216549 /net/sctp
parent2e7709d1cc665a5dbd079e49809907e9e17a9df3 (diff)
downloadlinux-stericsson-e7f282489123d88f5d412c837775e3e8c0f5521f.tar.gz
sctp: add SCTP_CURRENT_ASSOC for SCTP_STREAM_SCHEDULER_VALUE sockopt
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> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/socket.c21
1 files changed, 17 insertions, 4 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index b9263ad6a3a1..bf915912a2e6 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;