/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/* Copyright(c) 1999 - 2018 Intel Corporation. */
 3
 4#ifndef _IXGBE_FCOE_H
 5#define _IXGBE_FCOE_H
 6
 7#include <scsi/fc/fc_fs.h>
 8#include <scsi/fc/fc_fcoe.h>
 9
10/* shift bits within STAT fo FCSTAT */
11#define IXGBE_RXDADV_FCSTAT_SHIFT	4
12
13/* ddp user buffer */
14#define IXGBE_BUFFCNT_MAX	256	/* 8 bits bufcnt */
15#define IXGBE_FCPTR_ALIGN	16
16#define IXGBE_FCPTR_MAX	(IXGBE_BUFFCNT_MAX * sizeof(dma_addr_t))
17#define IXGBE_FCBUFF_4KB	0x0
18#define IXGBE_FCBUFF_8KB	0x1
19#define IXGBE_FCBUFF_16KB	0x2
20#define IXGBE_FCBUFF_64KB	0x3
21#define IXGBE_FCBUFF_MAX	65536	/* 64KB max */
22#define IXGBE_FCBUFF_MIN	4096	/* 4KB min */
23#define IXGBE_FCOE_DDP_MAX	512	/* 9 bits xid */
24#define IXGBE_FCOE_DDP_MAX_X550	2048	/* 11 bits xid */
25
26/* Default traffic class to use for FCoE */
27#define IXGBE_FCOE_DEFTC	3
28
29/* fcerr */
30#define IXGBE_FCERR_BADCRC       0x00100000
31
32/* FCoE DDP for target mode */
33#define __IXGBE_FCOE_TARGET	1
34
35struct ixgbe_fcoe_ddp {
36	int len;
37	u32 err;
38	unsigned int sgc;
39	struct scatterlist *sgl;
40	dma_addr_t udp;
41	u64 *udl;
42	struct dma_pool *pool;
43};
44
45/* per cpu variables */
46struct ixgbe_fcoe_ddp_pool {
47	struct dma_pool *pool;
48	u64 noddp;
49	u64 noddp_ext_buff;
50};
51
52struct ixgbe_fcoe {
53	struct ixgbe_fcoe_ddp_pool __percpu *ddp_pool;
54	atomic_t refcnt;
55	spinlock_t lock;
56	struct ixgbe_fcoe_ddp ddp[IXGBE_FCOE_DDP_MAX_X550];
57	void *extra_ddp_buffer;
58	dma_addr_t extra_ddp_buffer_dma;
59	unsigned long mode;
60	u8 up;
61};
62
63#endif /* _IXGBE_FCOE_H */