sctp: add support for generating add stream change event notification
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>
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 7735829..fd652e6 100644
--- a/include/uapi/linux/sctp.h
+++ b/include/uapi/linux/sctp.h
@@ -513,6 +513,17 @@ struct sctp_assoc_reset_event {
__u32 assocreset_remote_tsn;
};
+#define SCTP_ASSOC_CHANGE_DENIED 0x0004
+#define SCTP_ASSOC_CHANGE_FAILED 0x0008
+struct sctp_stream_change_event {
+ __u16 strchange_type;
+ __u16 strchange_flags;
+ __u32 strchange_length;
+ sctp_assoc_t strchange_assoc_id;
+ __u16 strchange_instrms;
+ __u16 strchange_outstrms;
+};
+
/*
* Described in Section 7.3
* Ancillary Data and Notification Interest Options
@@ -530,6 +541,7 @@ struct sctp_event_subscribe {
__u8 sctp_sender_dry_event;
__u8 sctp_stream_reset_event;
__u8 sctp_assoc_reset_event;
+ __u8 sctp_stream_change_event;
};
/*
@@ -556,6 +568,7 @@ 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
@@ -587,6 +600,8 @@ 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