drivers/net/ethernet/intel/fm10k/fm10k.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/intel/fm10k/fm10k.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/intel/fm10k/fm10k.h
Extension
.h
Size
15996 bytes
Lines
567
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 fm10k_l2_accel {
	int size;
	u16 count;
	u16 dglort;
	struct rcu_head rcu;
	struct net_device *macvlan[];
};

enum fm10k_ring_state_t {
	__FM10K_TX_DETECT_HANG,
	__FM10K_HANG_CHECK_ARMED,
	__FM10K_TX_XPS_INIT_DONE,
	/* This must be last and is used to calculate BITMAP size */
	__FM10K_TX_STATE_SIZE__,
};

#define check_for_tx_hang(ring) \
	test_bit(__FM10K_TX_DETECT_HANG, (ring)->state)
#define set_check_for_tx_hang(ring) \
	set_bit(__FM10K_TX_DETECT_HANG, (ring)->state)
#define clear_check_for_tx_hang(ring) \
	clear_bit(__FM10K_TX_DETECT_HANG, (ring)->state)

struct fm10k_tx_buffer {
	struct fm10k_tx_desc *next_to_watch;
	struct sk_buff *skb;
	unsigned int bytecount;
	u16 gso_segs;
	u16 tx_flags;
	DEFINE_DMA_UNMAP_ADDR(dma);
	DEFINE_DMA_UNMAP_LEN(len);
};

struct fm10k_rx_buffer {
	dma_addr_t dma;
	struct page *page;
	u32 page_offset;
};

struct fm10k_queue_stats {
	u64 packets;
	u64 bytes;
};

struct fm10k_tx_queue_stats {
	u64 restart_queue;
	u64 csum_err;
	u64 tx_busy;
	u64 tx_done_old;
	u64 csum_good;
};

struct fm10k_rx_queue_stats {
	u64 alloc_failed;
	u64 csum_err;
	u64 errors;
	u64 csum_good;
	u64 switch_errors;
	u64 drops;
	u64 pp_errors;
	u64 link_errors;
	u64 length_errors;
};

struct fm10k_ring {
	struct fm10k_q_vector *q_vector;/* backpointer to host q_vector */
	struct net_device *netdev;	/* netdev ring belongs to */
	struct device *dev;		/* device for DMA mapping */
	struct fm10k_l2_accel __rcu *l2_accel;	/* L2 acceleration list */
	void *desc;			/* descriptor ring memory */
	union {
		struct fm10k_tx_buffer *tx_buffer;
		struct fm10k_rx_buffer *rx_buffer;
	};
	u32 __iomem *tail;
	DECLARE_BITMAP(state, __FM10K_TX_STATE_SIZE__);
	dma_addr_t dma;			/* phys. address of descriptor ring */
	unsigned int size;		/* length in bytes */

	u8 queue_index;			/* needed for queue management */
	u8 reg_idx;			/* holds the special value that gets
					 * the hardware register offset
					 * associated with this ring, which is
					 * different for DCB and RSS modes
					 */
	u8 qos_pc;			/* priority class of queue */
	u16 vid;			/* default VLAN ID of queue */
	u16 count;			/* amount of descriptors */

	u16 next_to_alloc;

Annotation

Implementation Notes