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sctp: add support for snd flag SCTP_SENDALL process in sendmsg

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This patch is to add support for snd flag SCTP_SENDALL process
in sendmsg, as described in section 5.3.4 of RFC6458.

With this flag, you can send the same data to all the asocs of
this sk once.

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 20:44:20 +08:00
committed by David S. Miller
parent 2c0dbaa0c4
commit 4910280503
2 changed files with 33 additions and 4 deletions
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2
include/uapi/linux/sctp.h
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@@ -284,6 +284,8 @@ enum sctp_sinfo_flags {
SCTP_ADDR_OVER = (1 << 1), /* Override the primary destination. */
SCTP_ABORT = (1 << 2), /* Send an ABORT message to the peer. */
SCTP_SACK_IMMEDIATELY = (1 << 3), /* SACK should be sent without delay. */
/* 2 bits here have been used by SCTP_PR_SCTP_MASK */
SCTP_SENDALL = (1 << 6),
SCTP_NOTIFICATION = MSG_NOTIFICATION, /* Next message is not user msg but notification. */
SCTP_EOF = MSG_FIN, /* Initiate graceful shutdown process. */
};