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sctp: add support for generating add stream change event notification

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This patch is to add Stream Change Event described in rfc6525
section 6.1.3.

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
2017-03-10 12:11:08 +08:00
committed by David S. Miller
parent 692787cef6
commit b444153fb5
3 changed files with 47 additions and 0 deletions
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28
net/sctp/ulpevent.c
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@@ -911,6 +911,34 @@ struct sctp_ulpevent *sctp_ulpevent_make_assoc_reset_event(
return event;
}
struct sctp_ulpevent *sctp_ulpevent_make_stream_change_event(
const struct sctp_association *asoc, __u16 flags,
__u32 strchange_instrms, __u32 strchange_outstrms, gfp_t gfp)
{
struct sctp_stream_change_event *schange;
struct sctp_ulpevent *event;
struct sk_buff *skb;
event = sctp_ulpevent_new(sizeof(struct sctp_stream_change_event),
MSG_NOTIFICATION, gfp);
if (!event)
return NULL;
skb = sctp_event2skb(event);
schange = (struct sctp_stream_change_event *)
skb_put(skb, sizeof(struct sctp_stream_change_event));
schange->strchange_type = SCTP_STREAM_CHANGE_EVENT;
schange->strchange_flags = flags;
schange->strchange_length = sizeof(struct sctp_stream_change_event);
sctp_ulpevent_set_owner(event, asoc);
schange->strchange_assoc_id = sctp_assoc2id(asoc);
schange->strchange_instrms = strchange_instrms;
schange->strchange_outstrms = strchange_outstrms;
return event;
}
/* Return the notification type, assuming this is a notification
* event.
*/