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sctp: add support for SCTP AUTH Information for sendmsg

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This patch is to add support for SCTP AUTH Information for sendmsg,
as described in section 5.3.8 of RFC6458.

With this option, you can provide shared key identifier used for
sending the user message.

It's also a necessary send info for sctp_sendv.

Note that it reuses sinfo->sinfo_tsn to indicate if this option is
set and sinfo->sinfo_ssn to save the shkey ID which can be 0.

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
2018-03-14 19:05:31 +08:00
committed by David S. Miller
parent 1b1e0bc994
commit 3ff547c06a
4 changed files with 47 additions and 2 deletions
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1
include/net/sctp/structs.h
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@@ -2118,6 +2118,7 @@ struct sctp_cmsgs {
struct sctp_sndrcvinfo *srinfo;
struct sctp_sndinfo *sinfo;
struct sctp_prinfo *prinfo;
struct sctp_authinfo *authinfo;
struct msghdr *addrs_msg;
};