drivers/scsi/fnic/cq_enet_desc.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
   4  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   5  */
   6 #ifndef _CQ_ENET_DESC_H_
   7 #define _CQ_ENET_DESC_H_
   8
   9 #include "cq_desc.h"
  10
  11 /* Ethernet completion queue descriptor: 16B */
  12 struct cq_enet_wq_desc {
  13         __le16 completed_index;
  14         __le16 q_number;
  15         u8 reserved[11];
  16         u8 type_color;
  17 };
  18
  19 static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc,
  20         u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
  21 {
  22         cq_desc_dec((struct cq_desc *)desc, type,
  23                 color, q_number, completed_index);
  24 }
  25
  26 /* Completion queue descriptor: Ethernet receive queue, 16B */
  27 struct cq_enet_rq_desc {
  28         __le16 completed_index_flags;
  29         __le16 q_number_rss_type_flags;
  30         __le32 rss_hash;
  31         __le16 bytes_written_flags;
  32         __le16 vlan;
  33         __le16 checksum_fcoe;
  34         u8 flags;
  35         u8 type_color;
  36 };
  37
  38 #define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT          (0x1 << 12)
  39 #define CQ_ENET_RQ_DESC_FLAGS_FCOE                  (0x1 << 13)
  40 #define CQ_ENET_RQ_DESC_FLAGS_EOP                   (0x1 << 14)
  41 #define CQ_ENET_RQ_DESC_FLAGS_SOP                   (0x1 << 15)
  42
  43 #define CQ_ENET_RQ_DESC_RSS_TYPE_BITS               4
  44 #define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \
  45         ((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1)
  46 #define CQ_ENET_RQ_DESC_RSS_TYPE_NONE               0
  47 #define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4               1
  48 #define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4           2
  49 #define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6               3
  50 #define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6           4
  51 #define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX            5
  52 #define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX        6
  53
  54 #define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC         (0x1 << 14)
  55
  56 #define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS          14
  57 #define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \
  58         ((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1)
  59 #define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED             (0x1 << 14)
  60 #define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED         (0x1 << 15)
  61
  62 #define CQ_ENET_RQ_DESC_FCOE_SOF_BITS               4
  63 #define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \
  64         ((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1)
  65 #define CQ_ENET_RQ_DESC_FCOE_EOF_BITS               8
  66 #define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \
  67         ((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1)
  68 #define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT              8
  69
  70 #define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK       (0x1 << 0)
  71 #define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK              (0x1 << 0)
  72 #define CQ_ENET_RQ_DESC_FLAGS_UDP                   (0x1 << 1)
  73 #define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR              (0x1 << 1)
  74 #define CQ_ENET_RQ_DESC_FLAGS_TCP                   (0x1 << 2)
  75 #define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK          (0x1 << 3)
  76 #define CQ_ENET_RQ_DESC_FLAGS_IPV6                  (0x1 << 4)
  77 #define CQ_ENET_RQ_DESC_FLAGS_IPV4                  (0x1 << 5)
  78 #define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT         (0x1 << 6)
  79 #define CQ_ENET_RQ_DESC_FLAGS_FCS_OK                (0x1 << 7)
  80
  81 static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc,
  82         u8 *type, u8 *color, u16 *q_number, u16 *completed_index,
  83         u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type,
  84         u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error,
  85         u8 *vlan_stripped, u16 *vlan, u16 *checksum, u8 *fcoe_sof,
  86         u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof,
  87         u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok,
  88         u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok)
  89 {
  90         u16 completed_index_flags = le16_to_cpu(desc->completed_index_flags);
  91         u16 q_number_rss_type_flags =
  92                 le16_to_cpu(desc->q_number_rss_type_flags);
  93         u16 bytes_written_flags = le16_to_cpu(desc->bytes_written_flags);
  94
  95         cq_desc_dec((struct cq_desc *)desc, type,
  96                 color, q_number, completed_index);
  97
  98         *ingress_port = (completed_index_flags &
  99                 CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0;
 100         *fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ?
 101                 1 : 0;
 102         *eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ?
 103                 1 : 0;
 104         *sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ?
 105                 1 : 0;
 106
 107         *rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) &
 108                 CQ_ENET_RQ_DESC_RSS_TYPE_MASK);
 109         *csum_not_calc = (q_number_rss_type_flags &
 110                 CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0;
 111
 112         *rss_hash = le32_to_cpu(desc->rss_hash);
 113
 114         *bytes_written = bytes_written_flags &
 115                 CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK;
 116         *packet_error = (bytes_written_flags &
 117                 CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0;
 118         *vlan_stripped = (bytes_written_flags &
 119                 CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0;
 120
 121         *vlan = le16_to_cpu(desc->vlan);
 122
 123         if (*fcoe) {
 124                 *fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) &
 125                         CQ_ENET_RQ_DESC_FCOE_SOF_MASK);
 126                 *fcoe_fc_crc_ok = (desc->flags &
 127                         CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0;
 128                 *fcoe_enc_error = (desc->flags &
 129                         CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0;
 130                 *fcoe_eof = (u8)((desc->checksum_fcoe >>
 131                         CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) &
 132                         CQ_ENET_RQ_DESC_FCOE_EOF_MASK);
 133                 *checksum = 0;
 134         } else {
 135                 *fcoe_sof = 0;
 136                 *fcoe_fc_crc_ok = 0;
 137                 *fcoe_enc_error = 0;
 138                 *fcoe_eof = 0;
 139                 *checksum = le16_to_cpu(desc->checksum_fcoe);
 140         }
 141
 142         *tcp_udp_csum_ok =
 143                 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0;
 144         *udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0;
 145         *tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0;
 146         *ipv4_csum_ok =
 147                 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0;
 148         *ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0;
 149         *ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0;
 150         *ipv4_fragment =
 151                 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0;
 152         *fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0;
 153 }
 154
 155 #endif /* _CQ_ENET_DESC_H_ */