drivers/net/ethernet/sfc/tc_counters.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/sfc/tc_counters.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/sfc/tc_counters.h
Extension
.h
Size
2391 bytes
Lines
67
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct efx_tc_counter {
	u32 fw_id; /* index in firmware counter table */
	enum efx_tc_counter_type type;
	struct rhash_head linkage; /* efx->tc->counter_ht */
	spinlock_t lock; /* Serialises updates to counter values */
	u32 gen; /* Generation count at which this counter is current */
	u64 packets, bytes;
	u64 old_packets, old_bytes; /* Values last time passed to userspace */
	/* jiffies of the last time we saw packets increase */
	unsigned long touched;
	struct work_struct work; /* For notifying encap actions */
	/* owners of corresponding count actions */
	struct list_head users;
};

struct efx_tc_counter_index {
	unsigned long cookie;
	struct rhash_head linkage; /* efx->tc->counter_id_ht */
	refcount_t ref;
	struct efx_tc_counter *cnt;
};

/* create/uncreate/teardown hashtables */
int efx_tc_init_counters(struct efx_nic *efx);
void efx_tc_destroy_counters(struct efx_nic *efx);
void efx_tc_fini_counters(struct efx_nic *efx);

struct efx_tc_counter *efx_tc_flower_allocate_counter(struct efx_nic *efx,
						      int type);
void efx_tc_flower_release_counter(struct efx_nic *efx,
				   struct efx_tc_counter *cnt);
struct efx_tc_counter_index *efx_tc_flower_get_counter_index(
				struct efx_nic *efx, unsigned long cookie,
				enum efx_tc_counter_type type);
void efx_tc_flower_put_counter_index(struct efx_nic *efx,
				     struct efx_tc_counter_index *ctr);
struct efx_tc_counter_index *efx_tc_flower_find_counter_index(
				struct efx_nic *efx, unsigned long cookie);

extern const struct efx_channel_type efx_tc_channel_type;

#endif /* EFX_TC_COUNTERS_H */

Annotation

Implementation Notes