drivers/net/ethernet/sun/sunvnet_common.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/sun/sunvnet_common.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/sun/sunvnet_common.h
Extension
.h
Size
4381 bytes
Lines
158
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 vnet_tx_entry {
	struct sk_buff		*skb;
	unsigned int		ncookies;
	struct ldc_trans_cookie	cookies[VNET_MAXCOOKIES];
};

struct vnet;

struct vnet_port_stats {
	/* keep them all the same size */
	u32 rx_bytes;
	u32 tx_bytes;
	u32 rx_packets;
	u32 tx_packets;
	u32 event_up;
	u32 event_reset;
	u32 q_placeholder;
};

#define NUM_VNET_PORT_STATS  (sizeof(struct vnet_port_stats) / sizeof(u32))

/* Structure to describe a vnet-port or vsw-port in the MD.
 * If the vsw bit is set, this structure represents a vswitch
 * port, and the net_device can be found from ->dev. If the
 * vsw bit is not set, the net_device is available from ->vp->dev.
 * See the VNET_PORT_TO_NET_DEVICE macro below.
 */
struct vnet_port {
	struct vio_driver_state	vio;

	struct vnet_port_stats stats;

	struct hlist_node	hash;
	u8			raddr[ETH_ALEN];
	unsigned		switch_port:1;
	unsigned		tso:1;
	unsigned		vsw:1;
	unsigned		__pad:13;

	struct vnet		*vp;
	struct net_device	*dev;

	struct vnet_tx_entry	tx_bufs[VNET_TX_RING_SIZE];

	struct list_head	list;

	u32			stop_rx_idx;
	bool			stop_rx;
	bool			start_cons;

	struct timer_list	clean_timer;

	u64			rmtu;
	u16			tsolen;

	struct napi_struct	napi;
	u32			napi_stop_idx;
	bool			napi_resume;
	int			rx_event;
	u16			q_index;
};

static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio)
{
	return container_of(vio, struct vnet_port, vio);
}

#define VNET_PORT_HASH_SIZE	16
#define VNET_PORT_HASH_MASK	(VNET_PORT_HASH_SIZE - 1)

static inline unsigned int vnet_hashfn(u8 *mac)
{
	unsigned int val = mac[4] ^ mac[5];

	return val & (VNET_PORT_HASH_MASK);
}

struct vnet_mcast_entry {
	u8			addr[ETH_ALEN];
	u8			sent;
	u8			hit;
	struct vnet_mcast_entry	*next;
};

struct vnet {
	spinlock_t		lock; /* Protects port_list and port_hash.  */
	struct net_device	*dev;
	u32			msg_enable;
	u8			q_used[VNET_MAX_TXQS];
	struct list_head	port_list;

Annotation

Implementation Notes