drivers/net/ethernet/chelsio/cxgb4/l2t.c

File Facts

System

Linux kernel

Corpus path

drivers/net/ethernet/chelsio/cxgb4/l2t.c

Extension

.c

Size

19707 bytes

Lines

744

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/skbuff.h
• linux/netdevice.h
• linux/if.h
• linux/if_vlan.h
• linux/jhash.h
• linux/module.h
• linux/debugfs.h
• linux/seq_file.h
• net/neighbour.h
• cxgb4.h
• l2t.h
• t4_msg.h
• t4fw_api.h
• t4_regs.h
• t4_values.h

Detected Declarations

• struct l2t_data
• function vlan_prio
• function l2t_hold
• function arp_hash
• function ipv6_hash
• function addr_hash
• function addreq
• function neigh_replace
• function write_l2e
• function send_pending
• function do_l2t_write_rpl
• function arpq_enqueue
• function cxgb4_l2t_send
• function _t4_l2e_free
• function t4_l2e_free
• function cxgb4_l2t_release
• function reuse_entry
• function cxgb4_select_ntuple
• function t4_l2t_update
• function l2t_seq_stop
• function cxgb4_check_l2t_valid
• function l2t_seq_show
• function l2t_seq_open
• export cxgb4_l2t_send
• export cxgb4_l2t_release
• export cxgb4_l2t_get
• export cxgb4_select_ntuple
• export cxgb4_check_l2t_valid

Annotated Snippet

const struct file_operations t4_l2t_fops = {
	.owner = THIS_MODULE,
	.open = l2t_seq_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = seq_release,
};

Annotation

• Immediate include surface: `linux/skbuff.h`, `linux/netdevice.h`, `linux/if.h`, `linux/if_vlan.h`, `linux/jhash.h`, `linux/module.h`, `linux/debugfs.h`, `linux/seq_file.h`.
• Detected declarations: `struct l2t_data`, `function vlan_prio`, `function l2t_hold`, `function arp_hash`, `function ipv6_hash`, `function addr_hash`, `function addreq`, `function neigh_replace`, `function write_l2e`, `function send_pending`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: pattern 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.