From 6b3fd5f3a2bbc8464a8e0bf134a183b8fa026439 Mon Sep 17 00:00:00 2001 From: Geir Ola Vaagland Date: Sat, 12 Jul 2014 20:30:39 +0200 Subject: net: sctp: implement rfc6458, 8.1.31. SCTP_DEFAULT_SNDINFO support This patch implements section 8.1.31. of RFC6458, which adds support for setting/retrieving SCTP_DEFAULT_SNDINFO: Applications that wish to use the sendto() system call may wish to specify a default set of parameters that would normally be supplied through the inclusion of ancillary data. This socket option allows such an application to set the default sctp_sndinfo structure. The application that wishes to use this socket option simply passes the sctp_sndinfo structure (defined in Section 5.3.4) to this call. The input parameters accepted by this call include snd_sid, snd_flags, snd_ppid, and snd_context. The snd_flags parameter is composed of a bitwise OR of SCTP_UNORDERED, SCTP_EOF, and SCTP_SENDALL. The snd_assoc_id field specifies the association to which to apply the parameters. For a one-to-many style socket, any of the predefined constants are also allowed in this field. The field is ignored for one-to-one style sockets. Joint work with Daniel Borkmann. Signed-off-by: Geir Ola Vaagland Signed-off-by: Daniel Borkmann Signed-off-by: David S. Miller --- include/uapi/linux/sctp.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/uapi/linux/sctp.h b/include/uapi/linux/sctp.h index 222f82ffeca4..ce70fe6b45df 100644 --- a/include/uapi/linux/sctp.h +++ b/include/uapi/linux/sctp.h @@ -97,6 +97,7 @@ typedef __s32 sctp_assoc_t; #define SCTP_PEER_ADDR_THLDS 31 #define SCTP_RECVRCVINFO 32 #define SCTP_RECVNXTINFO 33 +#define SCTP_DEFAULT_SNDINFO 34 /* Internal Socket Options. Some of the sctp library functions are * implemented using these socket options. -- cgit v1.2.3