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sctp: add support for SCTP_DSTADDRV4/6 Information for sendmsg

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This patch is to add support for Destination IPv4/6 Address options
for sendmsg, as described in section 5.3.9/10 of RFC6458.

With this option, you can provide more than one destination addrs
to sendmsg when creating asoc, like sctp_connectx.

It's also a necessary send info for sctp_sendv.

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>
This commit is contained in:
Xin Long 2018-03-05 20:44:19 +08:00 • committed by David S. Miller
parent ed63afb8a3
commit 2c0dbaa0c4
3 changed files with 84 additions and 0 deletions
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6
include/uapi/linux/sctp.h
View file

@ -308,6 +308,12 @@ typedef enum sctp_cmsg_type {
#define SCTP_NXTINFO SCTP_NXTINFO
SCTP_PRINFO, /* 5.3.7 SCTP PR-SCTP Information Structure */
#define SCTP_PRINFO SCTP_PRINFO
SCTP_AUTHINFO, /* 5.3.8 SCTP AUTH Information Structure (RESERVED) */
#define SCTP_AUTHINFO SCTP_AUTHINFO
SCTP_DSTADDRV4, /* 5.3.9 SCTP Destination IPv4 Address Structure */
#define SCTP_DSTADDRV4 SCTP_DSTADDRV4
SCTP_DSTADDRV6, /* 5.3.10 SCTP Destination IPv6 Address Structure */
#define SCTP_DSTADDRV6 SCTP_DSTADDRV6
} sctp_cmsg_t;
/*