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 */
64

source code of linux/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.h