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