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>
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Родитель
692787cef6
Коммит
b444153fb5
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@ -136,6 +136,10 @@ struct sctp_ulpevent *sctp_ulpevent_make_assoc_reset_event(
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const struct sctp_association *asoc, __u16 flags,
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__u32 local_tsn, __u32 remote_tsn, gfp_t gfp);
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struct sctp_ulpevent *sctp_ulpevent_make_stream_change_event(
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const struct sctp_association *asoc, __u16 flags,
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__u32 strchange_instrms, __u32 strchange_outstrms, gfp_t gfp);
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void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event,
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struct msghdr *);
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void sctp_ulpevent_read_rcvinfo(const struct sctp_ulpevent *event,
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@ -513,6 +513,17 @@ struct sctp_assoc_reset_event {
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__u32 assocreset_remote_tsn;
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};
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#define SCTP_ASSOC_CHANGE_DENIED 0x0004
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#define SCTP_ASSOC_CHANGE_FAILED 0x0008
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struct sctp_stream_change_event {
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__u16 strchange_type;
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__u16 strchange_flags;
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__u32 strchange_length;
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sctp_assoc_t strchange_assoc_id;
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__u16 strchange_instrms;
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__u16 strchange_outstrms;
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};
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/*
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* Described in Section 7.3
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* Ancillary Data and Notification Interest Options
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@ -530,6 +541,7 @@ struct sctp_event_subscribe {
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__u8 sctp_sender_dry_event;
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__u8 sctp_stream_reset_event;
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__u8 sctp_assoc_reset_event;
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__u8 sctp_stream_change_event;
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};
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/*
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@ -556,6 +568,7 @@ union sctp_notification {
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struct sctp_sender_dry_event sn_sender_dry_event;
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struct sctp_stream_reset_event sn_strreset_event;
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struct sctp_assoc_reset_event sn_assocreset_event;
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struct sctp_stream_change_event sn_strchange_event;
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};
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/* Section 5.3.1
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@ -587,6 +600,8 @@ enum sctp_sn_type {
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#define SCTP_STREAM_RESET_EVENT SCTP_STREAM_RESET_EVENT
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SCTP_ASSOC_RESET_EVENT,
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#define SCTP_ASSOC_RESET_EVENT SCTP_ASSOC_RESET_EVENT
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SCTP_STREAM_CHANGE_EVENT,
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#define SCTP_STREAM_CHANGE_EVENT SCTP_STREAM_CHANGE_EVENT
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};
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/* Notification error codes used to fill up the error fields in some
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@ -911,6 +911,34 @@ struct sctp_ulpevent *sctp_ulpevent_make_assoc_reset_event(
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return event;
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}
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struct sctp_ulpevent *sctp_ulpevent_make_stream_change_event(
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const struct sctp_association *asoc, __u16 flags,
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__u32 strchange_instrms, __u32 strchange_outstrms, gfp_t gfp)
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{
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struct sctp_stream_change_event *schange;
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struct sctp_ulpevent *event;
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struct sk_buff *skb;
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event = sctp_ulpevent_new(sizeof(struct sctp_stream_change_event),
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MSG_NOTIFICATION, gfp);
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if (!event)
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return NULL;
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skb = sctp_event2skb(event);
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schange = (struct sctp_stream_change_event *)
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skb_put(skb, sizeof(struct sctp_stream_change_event));
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schange->strchange_type = SCTP_STREAM_CHANGE_EVENT;
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schange->strchange_flags = flags;
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schange->strchange_length = sizeof(struct sctp_stream_change_event);
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sctp_ulpevent_set_owner(event, asoc);
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schange->strchange_assoc_id = sctp_assoc2id(asoc);
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schange->strchange_instrms = strchange_instrms;
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schange->strchange_outstrms = strchange_outstrms;
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return event;
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}
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/* Return the notification type, assuming this is a notification
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* event.
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*/
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