| Abhijeet Joglekar | 5df6d73 | 2009-04-17 18:33:26 -0700 | [diff] [blame] | 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_ */ |