1/* 2 * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. 3 * Copyright 2007 Nuova Systems, Inc. All rights reserved. 4 * 5 * This program is free software; you may redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; version 2 of the License. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 16 * SOFTWARE. 17 * 18 */ 19 20#ifndef _CQ_ENET_DESC_H_ 21#define _CQ_ENET_DESC_H_ 22 23#include "cq_desc.h" 24 25/* Ethernet completion queue descriptor: 16B */ 26struct cq_enet_wq_desc { 27 __le16 completed_index; 28 __le16 q_number; 29 u8 reserved[11]; 30 u8 type_color; 31}; 32 33static inline void cq_enet_wq_desc_dec(struct cq_enet_wq_desc *desc, 34 u8 *type, u8 *color, u16 *q_number, u16 *completed_index) 35{ 36 cq_desc_dec((struct cq_desc *)desc, type, 37 color, q_number, completed_index); 38} 39 40/* Completion queue descriptor: Ethernet receive queue, 16B */ 41struct cq_enet_rq_desc { 42 __le16 completed_index_flags; 43 __le16 q_number_rss_type_flags; 44 __le32 rss_hash; 45 __le16 bytes_written_flags; 46 __le16 vlan; 47 __le16 checksum_fcoe; 48 u8 flags; 49 u8 type_color; 50}; 51 52#define CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT (0x1 << 12) 53#define CQ_ENET_RQ_DESC_FLAGS_FCOE (0x1 << 13) 54#define CQ_ENET_RQ_DESC_FLAGS_EOP (0x1 << 14) 55#define CQ_ENET_RQ_DESC_FLAGS_SOP (0x1 << 15) 56 57#define CQ_ENET_RQ_DESC_RSS_TYPE_BITS 4 58#define CQ_ENET_RQ_DESC_RSS_TYPE_MASK \ 59 ((1 << CQ_ENET_RQ_DESC_RSS_TYPE_BITS) - 1) 60#define CQ_ENET_RQ_DESC_RSS_TYPE_NONE 0 61#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv4 1 62#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv4 2 63#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6 3 64#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6 4 65#define CQ_ENET_RQ_DESC_RSS_TYPE_IPv6_EX 5 66#define CQ_ENET_RQ_DESC_RSS_TYPE_TCP_IPv6_EX 6 67 68#define CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC (0x1 << 14) 69 70#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS 14 71#define CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK \ 72 ((1 << CQ_ENET_RQ_DESC_BYTES_WRITTEN_BITS) - 1) 73#define CQ_ENET_RQ_DESC_FLAGS_TRUNCATED (0x1 << 14) 74#define CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED (0x1 << 15) 75 76#define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS 12 77#define CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_MASK \ 78 ((1 << CQ_ENET_RQ_DESC_VLAN_TCI_VLAN_BITS) - 1) 79#define CQ_ENET_RQ_DESC_VLAN_TCI_CFI_MASK (0x1 << 12) 80#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS 3 81#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_MASK \ 82 ((1 << CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_BITS) - 1) 83#define CQ_ENET_RQ_DESC_VLAN_TCI_USER_PRIO_SHIFT 13 84 85#define CQ_ENET_RQ_DESC_FCOE_SOF_BITS 8 86#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \ 87 ((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1) 88#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS 8 89#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \ 90 ((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1) 91#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT 8 92 93#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK (0x1 << 0) 94#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK (0x1 << 0) 95#define CQ_ENET_RQ_DESC_FLAGS_UDP (0x1 << 1) 96#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR (0x1 << 1) 97#define CQ_ENET_RQ_DESC_FLAGS_TCP (0x1 << 2) 98#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK (0x1 << 3) 99#define CQ_ENET_RQ_DESC_FLAGS_IPV6 (0x1 << 4) 100#define CQ_ENET_RQ_DESC_FLAGS_IPV4 (0x1 << 5) 101#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT (0x1 << 6) 102#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK (0x1 << 7) 103 104static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc, 105 u8 *type, u8 *color, u16 *q_number, u16 *completed_index, 106 u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type, 107 u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error, 108 u8 *vlan_stripped, u16 *vlan_tci, u16 *checksum, u8 *fcoe_sof, 109 u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof, 110 u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok, 111 u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok) 112{ 113 u16 completed_index_flags; 114 u16 q_number_rss_type_flags; 115 u16 bytes_written_flags; 116 117 cq_desc_dec((struct cq_desc *)desc, type, 118 color, q_number, completed_index); 119 120 completed_index_flags = le16_to_cpu(desc->completed_index_flags); 121 q_number_rss_type_flags = 122 le16_to_cpu(desc->q_number_rss_type_flags); 123 bytes_written_flags = le16_to_cpu(desc->bytes_written_flags); 124 125 *ingress_port = (completed_index_flags & 126 CQ_ENET_RQ_DESC_FLAGS_INGRESS_PORT) ? 1 : 0; 127 *fcoe = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_FCOE) ? 128 1 : 0; 129 *eop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_EOP) ? 130 1 : 0; 131 *sop = (completed_index_flags & CQ_ENET_RQ_DESC_FLAGS_SOP) ? 132 1 : 0; 133 134 *rss_type = (u8)((q_number_rss_type_flags >> CQ_DESC_Q_NUM_BITS) & 135 CQ_ENET_RQ_DESC_RSS_TYPE_MASK); 136 *csum_not_calc = (q_number_rss_type_flags & 137 CQ_ENET_RQ_DESC_FLAGS_CSUM_NOT_CALC) ? 1 : 0; 138 139 *rss_hash = le32_to_cpu(desc->rss_hash); 140 141 *bytes_written = bytes_written_flags & 142 CQ_ENET_RQ_DESC_BYTES_WRITTEN_MASK; 143 *packet_error = (bytes_written_flags & 144 CQ_ENET_RQ_DESC_FLAGS_TRUNCATED) ? 1 : 0; 145 *vlan_stripped = (bytes_written_flags & 146 CQ_ENET_RQ_DESC_FLAGS_VLAN_STRIPPED) ? 1 : 0; 147 148 /* 149 * Tag Control Information(16) = user_priority(3) + cfi(1) + vlan(12) 150 */ 151 *vlan_tci = le16_to_cpu(desc->vlan); 152 153 if (*fcoe) { 154 *fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) & 155 CQ_ENET_RQ_DESC_FCOE_SOF_MASK); 156 *fcoe_fc_crc_ok = (desc->flags & 157 CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0; 158 *fcoe_enc_error = (desc->flags & 159 CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0; 160 *fcoe_eof = (u8)((le16_to_cpu(desc->checksum_fcoe) >> 161 CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) & 162 CQ_ENET_RQ_DESC_FCOE_EOF_MASK); 163 *checksum = 0; 164 } else { 165 *fcoe_sof = 0; 166 *fcoe_fc_crc_ok = 0; 167 *fcoe_enc_error = 0; 168 *fcoe_eof = 0; 169 *checksum = le16_to_cpu(desc->checksum_fcoe); 170 } 171 172 *tcp_udp_csum_ok = 173 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0; 174 *udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0; 175 *tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0; 176 *ipv4_csum_ok = 177 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0; 178 *ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0; 179 *ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0; 180 *ipv4_fragment = 181 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0; 182 *fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0; 183} 184 185#endif /* _CQ_ENET_DESC_H_ */ 186