include/net/sctp/ulpevent.h

File Facts

System

Linux kernel

Corpus path

include/net/sctp/ulpevent.h

Extension

.h

Size

5606 bytes

Lines

190

Domain

Networking Core

Bucket

Sockets, Protocols, Packet Path, And Network Policy

Inferred role

Networking Core: implementation source

Status

source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

• Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• struct sctp_ulpevent
• function sctp_ulpevent_type_set
• function sctp_ulpevent_type_enabled
• function sctp_ulpevent_is_enabled

Annotated Snippet

struct sctp_ulpevent {
	struct sctp_association *asoc;
	struct sctp_chunk *chunk;
	unsigned int rmem_len;
	union {
		__u32 mid;
		__u16 ssn;
	};
	union {
		__u32 ppid;
		__u32 fsn;
	};
	__u32 tsn;
	__u32 cumtsn;
	__u16 stream;
	__u16 flags;
	__u16 msg_flags;
} __packed;

/* Retrieve the skb this event sits inside of. */
static inline struct sk_buff *sctp_event2skb(const struct sctp_ulpevent *ev)
{
	return container_of((void *)ev, struct sk_buff, cb);
}

/* Retrieve & cast the event sitting inside the skb. */
static inline struct sctp_ulpevent *sctp_skb2event(struct sk_buff *skb)
{
	return (struct sctp_ulpevent *)skb->cb;
}

void sctp_ulpevent_free(struct sctp_ulpevent *);
int sctp_ulpevent_is_notification(const struct sctp_ulpevent *);
unsigned int sctp_queue_purge_ulpevents(struct sk_buff_head *list);

struct sctp_ulpevent *sctp_ulpevent_make_assoc_change(
	const struct sctp_association *asoc,
	__u16 flags,
	__u16 state,
	__u16 error,
	__u16 outbound,
	__u16 inbound,
	struct sctp_chunk *chunk,
	gfp_t gfp);

void sctp_ulpevent_notify_peer_addr_change(struct sctp_transport *transport,
					   int state, int error);

struct sctp_ulpevent *sctp_ulpevent_make_remote_error(
	const struct sctp_association *asoc,
	struct sctp_chunk *chunk,
	__u16 flags,
	gfp_t gfp);
struct sctp_ulpevent *sctp_ulpevent_make_send_failed(
	const struct sctp_association *asoc,
	struct sctp_chunk *chunk,
	__u16 flags,
	__u32 error,
	gfp_t gfp);

struct sctp_ulpevent *sctp_ulpevent_make_send_failed_event(
	const struct sctp_association *asoc,
	struct sctp_chunk *chunk,
	__u16 flags,
	__u32 error,
	gfp_t gfp);

struct sctp_ulpevent *sctp_ulpevent_make_shutdown_event(
	const struct sctp_association *asoc,
	__u16 flags,
	gfp_t gfp);

struct sctp_ulpevent *sctp_ulpevent_make_pdapi(
	const struct sctp_association *asoc,
	__u32 indication, __u32 sid, __u32 seq,
	__u32 flags, gfp_t gfp);

struct sctp_ulpevent *sctp_ulpevent_make_adaptation_indication(
	const struct sctp_association *asoc, gfp_t gfp);

struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc,
	struct sctp_chunk *chunk,
	gfp_t gfp);

struct sctp_ulpevent *sctp_ulpevent_make_authkey(
	const struct sctp_association *asoc, __u16 key_id,
	__u32 indication, gfp_t gfp);

struct sctp_ulpevent *sctp_ulpevent_make_sender_dry_event(
	const struct sctp_association *asoc, gfp_t gfp);

Annotation

• Detected declarations: `struct sctp_ulpevent`, `function sctp_ulpevent_type_set`, `function sctp_ulpevent_type_enabled`, `function sctp_ulpevent_is_enabled`.
• Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.