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sctp: add support for generating stream ssn reset event notification

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This patch is to add Stream Reset Event described in rfc6525
section 6.1.1.

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
2017-02-17 12:45:38 +08:00
committed by David S. Miller
parent bd4b9f8b4a
commit 35ea82d611
3 changed files with 49 additions and 0 deletions
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net/sctp/ulpevent.c
+29
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@@ -854,6 +854,35 @@ struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event(
return event;
}
struct sctp_ulpevent *sctp_ulpevent_make_stream_reset_event(
const struct sctp_association *asoc, __u16 flags, __u16 stream_num,
__u16 *stream_list, gfp_t gfp)
{
struct sctp_stream_reset_event *sreset;
struct sctp_ulpevent *event;
struct sk_buff *skb;
int length, i;
length = sizeof(struct sctp_stream_reset_event) + 2 * stream_num;
event = sctp_ulpevent_new(length, MSG_NOTIFICATION, gfp);
if (!event)
return NULL;
skb = sctp_event2skb(event);
sreset = (struct sctp_stream_reset_event *)skb_put(skb, length);
sreset->strreset_type = SCTP_STREAM_RESET_EVENT;
sreset->strreset_flags = flags;
sreset->strreset_length = length;
sctp_ulpevent_set_owner(event, asoc);
sreset->strreset_assoc_id = sctp_assoc2id(asoc);
for (i = 0; i < stream_num; i++)
sreset->strreset_stream_list[i] = ntohs(stream_list[i]);
return event;
}
/* Return the notification type, assuming this is a notification
* event.
*/