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sctp: implement prsctp TTL policy

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prsctp TTL policy is a policy to abandon chunks when they expire
at the specific time in local stack. It's similar with expires_at
in struct sctp_datamsg.

This patch uses sinfo->sinfo_timetolive to set the specific time for
TTL policy. sinfo->sinfo_timetolive is also used for msg->expires_at.
So if prsctp_enable or TTL policy is not enabled, msg->expires_at
still works as before.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long
2016-07-09 19:47:43 +08:00
committed by David S. Miller
parent 826d253d57
commit a6c2f79287
5 changed files with 43 additions and 5 deletions
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4
net/sctp/socket.c
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@@ -7099,7 +7099,7 @@ static int sctp_msghdr_parse(const struct msghdr *msg, sctp_cmsgs_t *cmsgs)
if (cmsgs->srinfo->sinfo_flags &
~(SCTP_UNORDERED | SCTP_ADDR_OVER |
SCTP_SACK_IMMEDIATELY |
SCTP_SACK_IMMEDIATELY | SCTP_PR_SCTP_MASK |
SCTP_ABORT | SCTP_EOF))
return -EINVAL;
break;
@@ -7123,7 +7123,7 @@ static int sctp_msghdr_parse(const struct msghdr *msg, sctp_cmsgs_t *cmsgs)
if (cmsgs->sinfo->snd_flags &
~(SCTP_UNORDERED | SCTP_ADDR_OVER |
SCTP_SACK_IMMEDIATELY |
SCTP_SACK_IMMEDIATELY | SCTP_PR_SCTP_MASK |
SCTP_ABORT | SCTP_EOF))
return -EINVAL;
break;