sctp: add support for generating stream ssn reset event notification
This patch is to add Stream Reset Event described in rfc6525 section 6.1.1. Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -128,6 +128,10 @@ struct sctp_ulpevent *sctp_ulpevent_make_authkey(
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struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event(
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const struct sctp_association *asoc, gfp_t gfp);
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struct sctp_ulpevent *sctp_ulpevent_make_stream_reset_event(
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const struct sctp_association *asoc, __u16 flags,
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__u16 stream_num, __u16 *stream_list, 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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@ -490,6 +490,18 @@ struct sctp_sender_dry_event {
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sctp_assoc_t sender_dry_assoc_id;
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};
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#define SCTP_STREAM_RESET_INCOMING_SSN 0x0001
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#define SCTP_STREAM_RESET_OUTGOING_SSN 0x0002
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#define SCTP_STREAM_RESET_DENIED 0x0004
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#define SCTP_STREAM_RESET_FAILED 0x0008
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struct sctp_stream_reset_event {
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__u16 strreset_type;
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__u16 strreset_flags;
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__u32 strreset_length;
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sctp_assoc_t strreset_assoc_id;
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__u16 strreset_stream_list[];
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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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@ -505,6 +517,7 @@ struct sctp_event_subscribe {
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__u8 sctp_adaptation_layer_event;
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__u8 sctp_authentication_event;
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__u8 sctp_sender_dry_event;
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__u8 sctp_stream_reset_event;
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};
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/*
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@ -529,6 +542,7 @@ union sctp_notification {
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struct sctp_pdapi_event sn_pdapi_event;
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struct sctp_authkey_event sn_authkey_event;
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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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};
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/* Section 5.3.1
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@ -556,6 +570,8 @@ enum sctp_sn_type {
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#define SCTP_AUTHENTICATION_INDICATION SCTP_AUTHENTICATION_EVENT
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SCTP_SENDER_DRY_EVENT,
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#define SCTP_SENDER_DRY_EVENT SCTP_SENDER_DRY_EVENT
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SCTP_STREAM_RESET_EVENT,
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#define SCTP_STREAM_RESET_EVENT SCTP_STREAM_RESET_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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@ -854,6 +854,35 @@ struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event(
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return event;
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}
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struct sctp_ulpevent *sctp_ulpevent_make_stream_reset_event(
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const struct sctp_association *asoc, __u16 flags, __u16 stream_num,
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__u16 *stream_list, gfp_t gfp)
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{
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struct sctp_stream_reset_event *sreset;
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struct sctp_ulpevent *event;
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struct sk_buff *skb;
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int length, i;
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length = sizeof(struct sctp_stream_reset_event) + 2 * stream_num;
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event = sctp_ulpevent_new(length, 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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sreset = (struct sctp_stream_reset_event *)skb_put(skb, length);
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sreset->strreset_type = SCTP_STREAM_RESET_EVENT;
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sreset->strreset_flags = flags;
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sreset->strreset_length = length;
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sctp_ulpevent_set_owner(event, asoc);
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sreset->strreset_assoc_id = sctp_assoc2id(asoc);
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for (i = 0; i < stream_num; i++)
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sreset->strreset_stream_list[i] = ntohs(stream_list[i]);
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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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