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
  35 struct 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 */
  46 struct ixgbe_fcoe_ddp_pool {
  47         struct dma_pool *pool;
  48         u64 noddp;
  49         u64 noddp_ext_buff;
  50 };
  51
  52 struct 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 */