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sctp: add support for generating assoc reset event notification

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This patch is to add Association Reset Event described in rfc6525
section 6.1.2.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long 2017-03-10 12:11:06 +08:00 committed by David S. Miller
parent b3ca9af0fb
commit c95129d127
3 changed files with 47 additions and 0 deletions
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4
include/net/sctp/ulpevent.h
View file

@ -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,

15
include/uapi/linux/sctp.h
View file

@ -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

28
net/sctp/ulpevent.c
View file

@ -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.
*/