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author | Wei Yongjun <yjwei@cn.fujitsu.com> | 2011-04-17 17:29:03 +0000 |
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committer | David S. Miller <davem@davemloft.net> | 2011-04-21 10:35:44 -0700 |
commit | e1cdd553d482ceb083fac5e544e8702fccefbfd6 (patch) | |
tree | b2b0f0bdc7a90c03a91bba6289143ae0056c651a /net/sctp/ulpevent.c | |
parent | ee916fd0fdb8f43dacaab431de3e1f7225039d72 (diff) | |
download | linux-exynos-e1cdd553d482ceb083fac5e544e8702fccefbfd6.tar.gz linux-exynos-e1cdd553d482ceb083fac5e544e8702fccefbfd6.tar.bz2 linux-exynos-e1cdd553d482ceb083fac5e544e8702fccefbfd6.zip |
sctp: implement event notification SCTP_SENDER_DRY_EVENT
This patch implement event notification SCTP_SENDER_DRY_EVENT.
SCTP Socket API Extensions:
6.1.9. SCTP_SENDER_DRY_EVENT
When the SCTP stack has no more user data to send or retransmit, this
notification is given to the user. Also, at the time when a user app
subscribes to this event, if there is no data to be sent or
retransmit, the stack will immediately send up this notification.
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/ulpevent.c')
-rw-r--r-- | net/sctp/ulpevent.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c index 62d4a7bbaaea..c962c6062aab 100644 --- a/net/sctp/ulpevent.c +++ b/net/sctp/ulpevent.c @@ -862,6 +862,34 @@ fail: return NULL; } +/* + * Socket Extensions for SCTP + * 6.3.10. SCTP_SENDER_DRY_EVENT + */ +struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event( + const struct sctp_association *asoc, gfp_t gfp) +{ + struct sctp_ulpevent *event; + struct sctp_sender_dry_event *sdry; + struct sk_buff *skb; + + event = sctp_ulpevent_new(sizeof(struct sctp_sender_dry_event), + MSG_NOTIFICATION, gfp); + if (!event) + return NULL; + + skb = sctp_event2skb(event); + sdry = (struct sctp_sender_dry_event *) + skb_put(skb, sizeof(struct sctp_sender_dry_event)); + + sdry->sender_dry_type = SCTP_SENDER_DRY_EVENT; + sdry->sender_dry_flags = 0; + sdry->sender_dry_length = sizeof(struct sctp_sender_dry_event); + sctp_ulpevent_set_owner(event, asoc); + sdry->sender_dry_assoc_id = sctp_assoc2id(asoc); + + return event; +} /* Return the notification type, assuming this is a notification * event. |