net/can/j1939/main.c
Source file repositories/reference/linux-study-clean/net/can/j1939/main.c
File Facts
- System
- Linux kernel
- Corpus path
net/can/j1939/main.c- Extension
.c- Size
- 10031 bytes
- Lines
- 431
- 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/can/can-ml.hlinux/can/core.hlinux/can/skb.hlinux/if_arp.hlinux/module.hj1939-priv.h
Detected Declarations
function j1939_can_recvfunction j1939_priv_setfunction __j1939_priv_releasefunction j1939_priv_putfunction j1939_priv_getfunction j1939_can_rx_registerfunction j1939_can_rx_unregisterfunction __j1939_rx_releasefunction j1939_netdev_stopfunction j1939_send_onefunction j1939_netdev_notifyfunction j1939_module_initfunction j1939_module_exitmodule init j1939_module_init
Annotated Snippet
module_init(j1939_module_init);
module_exit(j1939_module_exit);Annotation
- Immediate include surface: `linux/can/can-ml.h`, `linux/can/core.h`, `linux/can/skb.h`, `linux/if_arp.h`, `linux/module.h`, `j1939-priv.h`.
- Detected declarations: `function j1939_can_recv`, `function j1939_priv_set`, `function __j1939_priv_release`, `function j1939_priv_put`, `function j1939_priv_get`, `function j1939_can_rx_register`, `function j1939_can_rx_unregister`, `function __j1939_rx_release`, `function j1939_netdev_stop`, `function j1939_send_one`.
- 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.