drivers/net/ethernet/chelsio/cxgb4/clip_tbl.h

File Facts

System

Linux kernel

Corpus path

drivers/net/ethernet/chelsio/cxgb4/clip_tbl.h

Extension

.h

Size

1353 bytes

Lines

46

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: implementation source

Status

source 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.
• 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/refcount.h

Detected Declarations

• struct clip_entry
• struct clip_tbl

Annotated Snippet

struct clip_entry {
	spinlock_t lock;	/* Hold while modifying clip reference */
	refcount_t refcnt;
	struct list_head list;
	union {
		struct sockaddr_in addr;
		struct sockaddr_in6 addr6;
	};
};

struct clip_tbl {
	unsigned int clipt_start;
	unsigned int clipt_size;
	rwlock_t lock;
	atomic_t nfree;
	struct list_head ce_free_head;
	void *cl_list;
	struct list_head hash_list[] __counted_by(clipt_size);
};

enum {
	CLIPT_MIN_HASH_BUCKETS = 2,
};

struct clip_tbl *t4_init_clip_tbl(unsigned int clipt_start,
				  unsigned int clipt_end);
int cxgb4_clip_get(const struct net_device *dev, const u32 *lip, u8 v6);
void cxgb4_clip_release(const struct net_device *dev, const u32 *lip, u8 v6);
int clip_tbl_show(struct seq_file *seq, void *v);
int cxgb4_update_root_dev_clip(struct net_device *dev);
void t4_cleanup_clip_tbl(struct adapter *adap);

Annotation

• Immediate include surface: `linux/refcount.h`.
• Detected declarations: `struct clip_entry`, `struct clip_tbl`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: source 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.