From c95129d127c6d3d9fca189c6f94c539a7f086b1a Mon Sep 17 00:00:00 2001 From: Xin Long Date: Fri, 10 Mar 2017 12:11:06 +0800 Subject: [PATCH] sctp: add support for generating assoc reset event notification This patch is to add Association Reset Event described in rfc6525 section 6.1.2. Signed-off-by: Xin Long Signed-off-by: David S. Miller --- 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 324b5965fc4d..2ab7ed44de52 100644 --- a/include/net/sctp/ulpevent.h +++ b/include/net/sctp/ulpevent.h @@ -132,6 +132,10 @@ struct sctp_ulpevent *sctp_ulpevent_make_stream_reset_event( const struct sctp_association *asoc, __u16 flags, __u16 stream_num, __u16 *stream_list, gfp_t gfp); +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); + 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 d3ae381fcf33..77358297c2f9 100644 --- a/include/uapi/linux/sctp.h +++ b/include/uapi/linux/sctp.h @@ -502,6 +502,17 @@ struct sctp_stream_reset_event { __u16 strreset_stream_list[]; }; +#define SCTP_ASSOC_RESET_DENIED 0x0004 +#define SCTP_ASSOC_RESET_FAILED 0x0008 +struct sctp_assoc_reset_event { + __u16 assocreset_type; + __u16 assocreset_flags; + __u32 assocreset_length; + sctp_assoc_t assocreset_assoc_id; + __u32 assocreset_local_tsn; + __u32 assocreset_remote_tsn; +}; + /* * Described in Section 7.3 * Ancillary Data and Notification Interest Options @@ -518,6 +529,7 @@ struct sctp_event_subscribe { __u8 sctp_authentication_event; __u8 sctp_sender_dry_event; __u8 sctp_stream_reset_event; + __u8 sctp_assoc_reset_event; }; /* @@ -543,6 +555,7 @@ union sctp_notification { struct sctp_authkey_event sn_authkey_event; 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; }; /* Section 5.3.1 @@ -572,6 +585,8 @@ enum sctp_sn_type { #define SCTP_SENDER_DRY_EVENT SCTP_SENDER_DRY_EVENT SCTP_STREAM_RESET_EVENT, #define SCTP_STREAM_RESET_EVENT SCTP_STREAM_RESET_EVENT + SCTP_ASSOC_RESET_EVENT, +#define SCTP_ASSOC_RESET_EVENT SCTP_ASSOC_RESET_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 c8881bc542a0..420d7f35256a 100644 --- a/net/sctp/ulpevent.c +++ b/net/sctp/ulpevent.c @@ -883,6 +883,34 @@ struct sctp_ulpevent *sctp_ulpevent_make_stream_reset_event( return event; } +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_assoc_reset_event *areset; + struct sctp_ulpevent *event; + struct sk_buff *skb; + + event = sctp_ulpevent_new(sizeof(struct sctp_assoc_reset_event), + MSG_NOTIFICATION, gfp); + if (!event) + return NULL; + + skb = sctp_event2skb(event); + areset = (struct sctp_assoc_reset_event *) + skb_put(skb, sizeof(struct sctp_assoc_reset_event)); + + areset->assocreset_type = SCTP_ASSOC_RESET_EVENT; + areset->assocreset_flags = flags; + areset->assocreset_length = sizeof(struct sctp_assoc_reset_event); + sctp_ulpevent_set_owner(event, asoc); + areset->assocreset_assoc_id = sctp_assoc2id(asoc); + areset->assocreset_local_tsn = local_tsn; + areset->assocreset_remote_tsn = remote_tsn; + + return event; +} + /* Return the notification type, assuming this is a notification * event. */ -- 2.11.0