This patch is to add Stream Change Event described in section 6.1.3.
Signed-off-by: Xin Long <lucien....@gmail.com>
---
include/net/sctp/ulpevent.h | 4 ++++
include/uapi/linux/sctp.h | 15 +++++++++++++++
net/sctp/ulpevent.c | 28 ++++++++++++++++++++++++++++
3 files changed, 47 insertions(+)
diff --git a/include/net/sctp/ulpevent.h b/include/net/sctp/ulpevent.h
index 2ab7ed4..1060494 100644
--- a/include/net/sctp/ulpevent.h
+++ b/include/net/sctp/ulpevent.h
@@ -136,6 +136,10 @@ struct sctp_ulpevent *sctp_ulpevent_make_assoc_reset_event(
const struct sctp_association *asoc, __u16 flags,
__u32 local_tsn, __u32 remote_tsn, gfp_t gfp);
+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);
+
void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event,
struct msghdr *);
void sctp_ulpevent_read_rcvinfo(const struct sctp_ulpevent *event,
diff --git a/include/uapi/linux/sctp.h b/include/uapi/linux/sctp.h
index 9da165a..90a8e2c 100644
--- a/include/uapi/linux/sctp.h
+++ b/include/uapi/linux/sctp.h
@@ -514,6 +514,17 @@ struct sctp_assoc_reset_event {
uint32_t assocreset_remote_tsn;
};
+#define SCTP_ASSOC_CHANGE_DENIED 0x0004
+#define SCTP_ASSOC_CHANGE_FAILED 0x0008
+struct sctp_stream_change_event {
+ uint16_t strchange_type;
+ uint16_t strchange_flags;
+ uint32_t strchange_length;
+ sctp_assoc_t strchange_assoc_id;
+ uint16_t strchange_instrms;
+ uint16_t strchange_outstrms;
+};
+
/*
* Described in Section 7.3
* Ancillary Data and Notification Interest Options
@@ -531,6 +542,7 @@ struct sctp_event_subscribe {
uint8_t sctp_sender_dry_event;
uint8_t sctp_stream_reset_event;
uint8_t sctp_assoc_reset_event;
+ uint8_t sctp_stream_change_event;
};
/*
@@ -557,6 +569,7 @@ union sctp_notification {
struct sctp_sender_dry_event sn_sender_dry_event;
struct sctp_stream_reset_event sn_strreset_event;
struct sctp_assoc_reset_event sn_assocreset_event;
+ struct sctp_stream_change_event sn_strchange_event;
};
/* Section 5.3.1
@@ -588,6 +601,8 @@ enum sctp_sn_type {
#define SCTP_STREAM_RESET_EVENT SCTP_STREAM_RESET_EVENT
SCTP_ASSOC_RESET_EVENT,
#define SCTP_ASSOC_RESET_EVENT SCTP_ASSOC_RESET_EVENT
+ SCTP_STREAM_CHANGE_EVENT,
+#define SCTP_STREAM_CHANGE_EVENT SCTP_STREAM_CHANGE_EVENT
};
/* Notification error codes used to fill up the error fields in some
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index 5492cd7..c56460f 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -912,6 +912,34 @@ 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.
*/
--
2.1.0
