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| author | Xin Long <lucien.xin@gmail.com> | 2016-07-09 14:47:43 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-07-11 23:25:39 +0300 |
| commit | a6c2f792873aff332a4689717c3cd6104f46684c (patch) | |
| tree | 2426d5ab4b3f7b3b4df82330a0df707a65477736 /include/net | |
| parent | 826d253d57b11f69add81c8086d2e7f1dce5ec77 (diff) | |
| download | linux-a6c2f792873aff332a4689717c3cd6104f46684c.tar.xz | |
sctp: implement prsctp TTL policy
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>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/sctp/structs.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index d8e464aacb20..6bcda715008e 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -602,6 +602,16 @@ struct sctp_chunk { /* This needs to be recoverable for SCTP_SEND_FAILED events. */ struct sctp_sndrcvinfo sinfo; + /* We use this field to record param for prsctp policies, + * for TTL policy, it is the time_to_drop of this chunk, + * for RTX policy, it is the max_sent_count of this chunk, + * for PRIO policy, it is the priority of this chunk. + */ + unsigned long prsctp_param; + + /* How many times this chunk have been sent, for prsctp RTX policy */ + int sent_count; + /* Which association does this belong to? */ struct sctp_association *asoc; |