sctp: implement sender-side procedures for Add Incoming/Outgoing Streams Request...

[mirror_ubuntu-artful-kernel.git] / net / sctp / socket.c

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 45a7c417eb7f3c8b9e22ef49102d3b30ce395352..75f35cea43713856a613e04a933696fb870ba171 100644 (file)
--- 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;