net/vmw_vsock/vmci_transport.c

File Facts

System

Linux kernel

Corpus path

net/vmw_vsock/vmci_transport.c

Extension

.c

Size

59035 bytes

Lines

2173

Domain

Networking Core

Bucket

Sockets, Protocols, Packet Path, And Network Policy

Inferred role

Networking Core: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• linux/bitops.h
• linux/cred.h
• linux/init.h
• linux/io.h
• linux/kernel.h
• linux/kmod.h
• linux/list.h
• linux/module.h
• linux/mutex.h
• linux/net.h
• linux/poll.h
• linux/skbuff.h
• linux/smp.h
• linux/socket.h
• linux/stddef.h
• linux/unistd.h
• linux/wait.h
• linux/workqueue.h
• net/sock.h
• net/af_vsock.h
• vmci_transport_notify.h

Detected Declarations

• struct vmci_transport_recv_pkt_info
• function vmci_transport_error_to_vsock_error
• function vmci_transport_peer_rid
• function vmci_transport_packet_init
• function vmci_transport_packet_get_addresses
• function __vmci_transport_send_control_pkt
• function vmci_transport_reply_control_pkt_fast
• function vmci_transport_send_control_pkt_bh
• function vmci_transport_alloc_send_control_pkt
• function vmci_transport_send_control_pkt
• function vmci_transport_send_reset_bh
• function vmci_transport_send_reset
• function vmci_transport_send_negotiate
• function vmci_transport_send_negotiate2
• function vmci_transport_send_qp_offer
• function vmci_transport_send_attach
• function vmci_transport_reply_reset
• function vmci_transport_send_invalid_bh
• function vmci_transport_send_wrote_bh
• function vmci_transport_send_read_bh
• function vmci_transport_send_wrote
• function vmci_transport_send_read
• function vmci_transport_send_waiting_write
• function vmci_transport_send_waiting_read
• function vmci_transport_shutdown
• function vmci_transport_send_conn_request
• function vmci_transport_send_conn_request2
• function list_for_each_entry
• function vmci_transport_release_pending
• function VM
• function vmci_transport_allow_dgram
• function vmci_transport_queue_pair_alloc
• function vmci_transport_datagram_create_hnd
• function vmci_transport_recv_dgram_cb
• function vmci_transport_stream_allow
• function vmci_transport_recv_stream_cb
• function vmci_transport_handle_detach
• function vmci_transport_peer_detach_cb
• function vmci_transport_qp_resumed_cb
• function vmci_transport_recv_pkt_work
• function vmci_transport_recv_listen
• function vmci_transport_recv_connecting_server
• function vmci_transport_recv_connecting_client
• function vmci_transport_recv_connecting_client_negotiate
• function vmci_transport_recv_connecting_client_invalid
• function vmci_transport_recv_connected
• function change
• function vmci_transport_socket_init

Annotated Snippet

module_init(vmci_transport_init);

static void __exit vmci_transport_exit(void)
{
	cancel_work_sync(&vmci_transport_cleanup_work);
	vmci_transport_free_resources(&vmci_transport_cleanup_list);

	if (!vmci_handle_is_invalid(vmci_transport_stream_handle)) {
		if (vmci_datagram_destroy_handle(
			vmci_transport_stream_handle) != VMCI_SUCCESS)
			pr_err("Couldn't destroy datagram handle\n");
		vmci_transport_stream_handle = VMCI_INVALID_HANDLE;
	}

	if (vmci_transport_qp_resumed_sub_id != VMCI_INVALID_ID) {
		vmci_event_unsubscribe(vmci_transport_qp_resumed_sub_id);
		vmci_transport_qp_resumed_sub_id = VMCI_INVALID_ID;
	}

	vmci_register_vsock_callback(NULL);
	vsock_core_unregister(&vmci_transport);
}
module_exit(vmci_transport_exit);

MODULE_AUTHOR("VMware, Inc.");
MODULE_DESCRIPTION("VMCI transport for Virtual Sockets");
MODULE_VERSION("1.0.5.0-k");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("vmware_vsock");
MODULE_ALIAS_NETPROTO(PF_VSOCK);

Annotation

• Immediate include surface: `linux/types.h`, `linux/bitops.h`, `linux/cred.h`, `linux/init.h`, `linux/io.h`, `linux/kernel.h`, `linux/kmod.h`, `linux/list.h`.
• Detected declarations: `struct vmci_transport_recv_pkt_info`, `function vmci_transport_error_to_vsock_error`, `function vmci_transport_peer_rid`, `function vmci_transport_packet_init`, `function vmci_transport_packet_get_addresses`, `function __vmci_transport_send_control_pkt`, `function vmci_transport_reply_control_pkt_fast`, `function vmci_transport_send_control_pkt_bh`, `function vmci_transport_alloc_send_control_pkt`, `function vmci_transport_send_control_pkt`.
• Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.