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

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
   4  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   5  */
   6
   7 #ifndef _CQ_ENET_DESC_H_
   8 #define _CQ_ENET_DESC_H_
   9
  10 #include "cq_desc.h"
  11
  12 /* Ethernet completion queue descriptor: 16B */
  13 struct cq_enet_wq_desc {
  14         __le16 completed_index;
  15         __le16 q_number;
  16         u8 reserved[11];
  17         u8 type_color;
  18 };
  19
  20 static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc,
  21         u8 *type, u8 *color, u16 *q_number, u16 *completed_index)
  22 {
  23         cq_desc_dec((struct cq_desc *)desc, type,
  24                 color, q_number, completed_index);
  25 }
  26
  27 /* Completion queue descriptor: Ethernet receive queue, 16B */
  28 struct cq_enet_rq_desc {
  29         __le16 completed_index_flags;
  30         __le16 q_number_rss_type_flags;
  31         __le32 rss_hash;
  32         __le16 bytes_written_flags;
  33         __le16 vlan;
  34         __le16 checksum_fcoe;
  35         u8 flags;
  36         u8 type_color;
  37 };
  38
  39 #define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT          (0x1 << 12)
  40 #define CQ_ENET_RQ_DESC_FLAGS_FCOE                  (0x1 << 13)
  41 #define CQ_ENET_RQ_DESC_FLAGS_EOP                   (0x1 << 14)
  42 #define CQ_ENET_RQ_DESC_FLAGS_SOP                   (0x1 << 15)
  43
  44 #define CQ_ENET_RQ_DESC_RSS_TYPE_BITS               4
  45 #define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \
  46         ((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1)
  47 #define CQ_ENET_RQ_DESC_RSS_TYPE_NONE               0
  48 #define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4               1
  49 #define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4           2
  50 #define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6               3
  51 #define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6           4
  52 #define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX            5
  53 #define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX        6
  54
  55 #define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC         (0x1 << 14)
  56
  57 #define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS          14
  58 #define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \
  59         ((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1)
  60 #define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED             (0x1 << 14)
  61 #define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED         (0x1 << 15)
  62
  63 #define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS          12
  64 #define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_MASK \
  65         ((1 << CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS) - 1)
  66 #define CQ_ENET_RQ_DESC_VLAN_TCI_CFI_MASK           (0x1 << 12)
  67 #define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS     3
  68 #define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_MASK \
  69         ((1 << CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS) - 1)
  70 #define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_SHIFT    13
  71
  72 #define CQ_ENET_RQ_DESC_FCOE_SOF_BITS               8
  73 #define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \
  74         ((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1)
  75 #define CQ_ENET_RQ_DESC_FCOE_EOF_BITS               8
  76 #define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \
  77         ((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1)
  78 #define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT              8
  79
  80 #define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK       (0x1 << 0)
  81 #define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK              (0x1 << 0)
  82 #define CQ_ENET_RQ_DESC_FLAGS_UDP                   (0x1 << 1)
  83 #define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR              (0x1 << 1)
  84 #define CQ_ENET_RQ_DESC_FLAGS_TCP                   (0x1 << 2)
  85 #define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK          (0x1 << 3)
  86 #define CQ_ENET_RQ_DESC_FLAGS_IPV6                  (0x1 << 4)
  87 #define CQ_ENET_RQ_DESC_FLAGS_IPV4                  (0x1 << 5)
  88 #define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT         (0x1 << 6)
  89 #define CQ_ENET_RQ_DESC_FLAGS_FCS_OK                (0x1 << 7)
  90
  91 static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc,
  92         u8 *type, u8 *color, u16 *q_number, u16 *completed_index,
  93         u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type,
  94         u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error,
  95         u8 *vlan_stripped, u16 *vlan_tci, u16 *checksum, u8 *fcoe_sof,
  96         u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof,
  97         u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok,
  98         u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok)
  99 {
 100         u16 completed_index_flags;
 101         u16 q_number_rss_type_flags;
 102         u16 bytes_written_flags;
 103
 104         cq_desc_dec((struct cq_desc *)desc, type,
 105                 color, q_number, completed_index);
 106
 107         completed_index_flags = le16_to_cpu(desc->completed_index_flags);
 108         q_number_rss_type_flags =
 109                 le16_to_cpu(desc->q_number_rss_type_flags);
 110         bytes_written_flags = le16_to_cpu(desc->bytes_written_flags);
 111
 112         *ingress_port = (completed_index_flags &
 113                 CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0;
 114         *fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ?
 115                 1 : 0;
 116         *eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ?
 117                 1 : 0;
 118         *sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ?
 119                 1 : 0;
 120
 121         *rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) &
 122                 CQ_ENET_RQ_DESC_RSS_TYPE_MASK);
 123         *csum_not_calc = (q_number_rss_type_flags &
 124                 CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0;
 125
 126         *rss_hash = le32_to_cpu(desc->rss_hash);
 127
 128         *bytes_written = bytes_written_flags &
 129                 CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK;
 130         *packet_error = (bytes_written_flags &
 131                 CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0;
 132         *vlan_stripped = (bytes_written_flags &
 133                 CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0;
 134
 135         /*
 136          * Tag Control Information(16) = user_priority(3) + cfi(1) + vlan(12)
 137          */
 138         *vlan_tci = le16_to_cpu(desc->vlan);
 139
 140         if (*fcoe) {
 141                 *fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) &
 142                         CQ_ENET_RQ_DESC_FCOE_SOF_MASK);
 143                 *fcoe_fc_crc_ok = (desc->flags &
 144                         CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0;
 145                 *fcoe_enc_error = (desc->flags &
 146                         CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0;
 147                 *fcoe_eof = (u8)((le16_to_cpu(desc->checksum_fcoe) >>
 148                         CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) &
 149                         CQ_ENET_RQ_DESC_FCOE_EOF_MASK);
 150                 *checksum = 0;
 151         } else {
 152                 *fcoe_sof = 0;
 153                 *fcoe_fc_crc_ok = 0;
 154                 *fcoe_enc_error = 0;
 155                 *fcoe_eof = 0;
 156                 *checksum = le16_to_cpu(desc->checksum_fcoe);
 157         }
 158
 159         *tcp_udp_csum_ok =
 160                 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0;
 161         *udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0;
 162         *tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0;
 163         *ipv4_csum_ok =
 164                 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0;
 165         *ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0;
 166         *ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0;
 167         *ipv4_fragment =
 168                 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0;
 169         *fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0;
 170 }
 171
 172 #endif /* _CQ_ENET_DESC_H_ */