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authorXin Long <lucien.xin@gmail.com>2017-02-09 01:18:20 +0800
committerDavid S. Miller <davem@davemloft.net>2017-02-09 16:57:38 -0500
commit242bd2d519d7194633e309286ba7ba29a1ad63e8 (patch)
treecda37b0df90dff6a18070f3330da80183f6456e5 /net/sctp/socket.c
parent78098117f8bfad4f2104c3f7b6b69071af95a246 (diff)
downloadlinux-242bd2d519d7194633e309286ba7ba29a1ad63e8.tar.bz2
sctp: implement sender-side procedures for Add Incoming/Outgoing Streams Request Parameter
This patch is to implement Sender-Side Procedures for the Add Outgoing and Incoming Streams Request Parameter described in rfc6525 section 5.1.5-5.1.6. It is also to add sockopt SCTP_ADD_STREAMS in rfc6525 section 6.3.4 for users. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/socket.c')
-rw-r--r--net/sctp/socket.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 45a7c417eb7f..75f35cea4371 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -3844,6 +3844,32 @@ out:
return retval;
}
+static int sctp_setsockopt_add_streams(struct sock *sk,
+ char __user *optval,
+ unsigned int optlen)
+{
+ struct sctp_association *asoc;
+ struct sctp_add_streams params;
+ int retval = -EINVAL;
+
+ if (optlen != sizeof(params))
+ goto out;
+
+ if (copy_from_user(&params, optval, optlen)) {
+ retval = -EFAULT;
+ goto out;
+ }
+
+ asoc = sctp_id2assoc(sk, params.sas_assoc_id);
+ if (!asoc)
+ goto out;
+
+ retval = sctp_send_add_streams(asoc, &params);
+
+out:
+ return retval;
+}
+
/* API 6.2 setsockopt(), getsockopt()
*
* Applications use setsockopt() and getsockopt() to set or retrieve
@@ -4019,6 +4045,9 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname,
case SCTP_RESET_ASSOC:
retval = sctp_setsockopt_reset_assoc(sk, optval, optlen);
break;
+ case SCTP_ADD_STREAMS:
+ retval = sctp_setsockopt_add_streams(sk, optval, optlen);
+ break;
default:
retval = -ENOPROTOOPT;
break;