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Commit e7f28248 authored by Xin Long's avatar Xin Long Committed by David S. Miller
Browse files

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: default avatarXin Long <lucien.xin@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 2e7709d1

net/sctp/socket.c

+17 −4
Original line number Diff line number Diff line
@@ -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;



	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;