drivers/net/ethernet/cisco/enic/enic_res.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/cisco/enic/enic_res.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/cisco/enic/enic_res.h
Extension
.h
Size
4474 bytes
Lines
144
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

#ifndef _ENIC_RES_H_
#define _ENIC_RES_H_

#include "wq_enet_desc.h"
#include "rq_enet_desc.h"
#include "vnic_wq.h"
#include "vnic_rq.h"

#define ENIC_MIN_WQ_DESCS 64
#define ENIC_MAX_WQ_DESCS_DEFAULT 4096
#define ENIC_MAX_WQ_DESCS 16384
#define ENIC_MIN_RQ_DESCS 64
#define ENIC_MAX_RQ_DESCS 16384
#define ENIC_MAX_RQ_DESCS_DEFAULT 4096
#define ENIC_MAX_CQ_DESCS_DEFAULT (64 * 1024)

#define ENIC_MIN_MTU			ETH_MIN_MTU
#define ENIC_MAX_MTU			9000

#define ENIC_MULTICAST_PERFECT_FILTERS	32
#define ENIC_UNICAST_PERFECT_FILTERS	32

#define ENIC_NON_TSO_MAX_DESC		16

#define ENIC_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)

static inline void enic_queue_wq_desc_ex(struct vnic_wq *wq,
	void *os_buf, dma_addr_t dma_addr, unsigned int len,
	unsigned int mss_or_csum_offset, unsigned int hdr_len,
	int vlan_tag_insert, unsigned int vlan_tag,
	int offload_mode, int cq_entry, int sop, int eop, int loopback)
{
	struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
	u8 desc_skip_cnt = 1;
	u8 compressed_send = 0;
	u64 wrid = 0;

	wq_enet_desc_enc(desc,
		(u64)dma_addr | VNIC_PADDR_TARGET,
		(u16)len,
		(u16)mss_or_csum_offset,
		(u16)hdr_len, (u8)offload_mode,
		(u8)eop, (u8)cq_entry,
		0, /* fcoe_encap */
		(u8)vlan_tag_insert,
		(u16)vlan_tag,
		(u8)loopback);

	vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop, desc_skip_cnt,
			(u8)cq_entry, compressed_send, wrid);
}

static inline void enic_queue_wq_desc_cont(struct vnic_wq *wq,
	void *os_buf, dma_addr_t dma_addr, unsigned int len,
	int eop, int loopback)
{
	enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
		0, 0, 0, 0, 0,
		eop, 0 /* !SOP */, eop, loopback);
}

static inline void enic_queue_wq_desc(struct vnic_wq *wq, void *os_buf,
	dma_addr_t dma_addr, unsigned int len, int vlan_tag_insert,
	unsigned int vlan_tag, int eop, int loopback)
{
	enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
		0, 0, vlan_tag_insert, vlan_tag,
		WQ_ENET_OFFLOAD_MODE_CSUM,
		eop, 1 /* SOP */, eop, loopback);
}

static inline void enic_queue_wq_desc_csum(struct vnic_wq *wq,
	void *os_buf, dma_addr_t dma_addr, unsigned int len,
	int ip_csum, int tcpudp_csum, int vlan_tag_insert,
	unsigned int vlan_tag, int eop, int loopback)
{
	enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
		(ip_csum ? 1 : 0) + (tcpudp_csum ? 2 : 0),
		0, vlan_tag_insert, vlan_tag,
		WQ_ENET_OFFLOAD_MODE_CSUM,
		eop, 1 /* SOP */, eop, loopback);
}

static inline void enic_queue_wq_desc_csum_l4(struct vnic_wq *wq,
	void *os_buf, dma_addr_t dma_addr, unsigned int len,
	unsigned int csum_offset, unsigned int hdr_len,
	int vlan_tag_insert, unsigned int vlan_tag, int eop, int loopback)
{
	enic_queue_wq_desc_ex(wq, os_buf, dma_addr, len,
		csum_offset, hdr_len, vlan_tag_insert, vlan_tag,

Annotation

Implementation Notes