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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_ */ |