drivers/net/ethernet/qlogic/netxen/netxen_nic.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/qlogic/netxen/netxen_nic.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/qlogic/netxen/netxen_nic.h
Extension
.h
Size
50902 bytes
Lines
1870
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 netxen_rcv_ring {
	__le64 addr;
	__le32 size;
	__le32 rsrvd;
};

struct netxen_sts_ring {
	__le64 addr;
	__le32 size;
	__le16 msi_index;
	__le16 rsvd;
} ;

struct netxen_ring_ctx {

	/* one command ring */
	__le64 cmd_consumer_offset;
	__le64 cmd_ring_addr;
	__le32 cmd_ring_size;
	__le32 rsrvd;

	/* three receive rings */
	struct netxen_rcv_ring rcv_rings[NUM_RCV_DESC_RINGS];

	__le64 sts_ring_addr;
	__le32 sts_ring_size;

	__le32 ctx_id;

	__le64 rsrvd_2[3];
	__le32 sts_ring_count;
	__le32 rsrvd_3;
	struct netxen_sts_ring sts_rings[NUM_STS_DESC_RINGS];

} __attribute__ ((aligned(64)));

/*
 * Following data structures describe the descriptors that will be used.
 * Added fileds of tcpHdrSize and ipHdrSize, The driver needs to do it only when
 * we are doing LSO (above the 1500 size packet) only.
 */

/*
 * The size of reference handle been changed to 16 bits to pass the MSS fields
 * for the LSO packet
 */

#define FLAGS_CHECKSUM_ENABLED	0x01
#define FLAGS_LSO_ENABLED	0x02
#define FLAGS_IPSEC_SA_ADD	0x04
#define FLAGS_IPSEC_SA_DELETE	0x08
#define FLAGS_VLAN_TAGGED	0x10
#define FLAGS_VLAN_OOB		0x40

#define netxen_set_tx_vlan_tci(cmd_desc, v)	\
	(cmd_desc)->vlan_TCI = cpu_to_le16(v);

#define netxen_set_cmd_desc_port(cmd_desc, var)	\
	((cmd_desc)->port_ctxid |= ((var) & 0x0F))
#define netxen_set_cmd_desc_ctxid(cmd_desc, var)	\
	((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0))

#define netxen_set_tx_port(_desc, _port) \
	(_desc)->port_ctxid = ((_port) & 0xf) | (((_port) << 4) & 0xf0)

#define netxen_set_tx_flags_opcode(_desc, _flags, _opcode) \
	(_desc)->flags_opcode = \
	cpu_to_le16(((_flags) & 0x7f) | (((_opcode) & 0x3f) << 7))

#define netxen_set_tx_frags_len(_desc, _frags, _len) \
	(_desc)->nfrags__length = \
	cpu_to_le32(((_frags) & 0xff) | (((_len) & 0xffffff) << 8))

struct cmd_desc_type0 {
	u8 tcp_hdr_offset;	/* For LSO only */
	u8 ip_hdr_offset;	/* For LSO only */
	__le16 flags_opcode;	/* 15:13 unused, 12:7 opcode, 6:0 flags */
	__le32 nfrags__length;	/* 31:8 total len, 7:0 frag count */

	__le64 addr_buffer2;

	__le16 reference_handle;
	__le16 mss;
	u8 port_ctxid;		/* 7:4 ctxid 3:0 port */
	u8 total_hdr_length;	/* LSO only : MAC+IP+TCP Hdr size */
	__le16 conn_id;		/* IPSec offoad only */

	__le64 addr_buffer3;
	__le64 addr_buffer1;

Annotation

Implementation Notes