blob: 03dce9ed612cf4df66fd3d554850198642eabebf [file] [log] [blame]
Scott Feldman01f2e4e2008-09-15 09:17:11 -07001/*
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 */
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_FCOE_SOF_BITS 4
77#define CQ_ENET_RQ_DESC_FCOE_SOF_MASK \
78 ((1 << CQ_ENET_RQ_DESC_FCOE_SOF_BITS) - 1)
79#define CQ_ENET_RQ_DESC_FCOE_EOF_BITS 8
80#define CQ_ENET_RQ_DESC_FCOE_EOF_MASK \
81 ((1 << CQ_ENET_RQ_DESC_FCOE_EOF_BITS) - 1)
82#define CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT 8
83
84#define CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK (0x1 << 0)
85#define CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK (0x1 << 0)
86#define CQ_ENET_RQ_DESC_FLAGS_UDP (0x1 << 1)
87#define CQ_ENET_RQ_DESC_FCOE_ENC_ERROR (0x1 << 1)
88#define CQ_ENET_RQ_DESC_FLAGS_TCP (0x1 << 2)
89#define CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK (0x1 << 3)
90#define CQ_ENET_RQ_DESC_FLAGS_IPV6 (0x1 << 4)
91#define CQ_ENET_RQ_DESC_FLAGS_IPV4 (0x1 << 5)
92#define CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT (0x1 << 6)
93#define CQ_ENET_RQ_DESC_FLAGS_FCS_OK (0x1 << 7)
94
95static inline void cq_enet_rq_desc_dec(struct cq_enet_rq_desc *desc,
96 u8 *type, u8 *color, u16 *q_number, u16 *completed_index,
97 u8 *ingress_port, u8 *fcoe, u8 *eop, u8 *sop, u8 *rss_type,
98 u8 *csum_not_calc, u32 *rss_hash, u16 *bytes_written, u8 *packet_error,
99 u8 *vlan_stripped, u16 *vlan, u16 *checksum, u8 *fcoe_sof,
100 u8 *fcoe_fc_crc_ok, u8 *fcoe_enc_error, u8 *fcoe_eof,
101 u8 *tcp_udp_csum_ok, u8 *udp, u8 *tcp, u8 *ipv4_csum_ok,
102 u8 *ipv6, u8 *ipv4, u8 *ipv4_fragment, u8 *fcs_ok)
103{
104 u16 completed_index_flags = le16_to_cpu(desc->completed_index_flags);
105 u16 q_number_rss_type_flags =
106 le16_to_cpu(desc->q_number_rss_type_flags);
107 u16 bytes_written_flags = le16_to_cpu(desc->bytes_written_flags);
108
109 cq_desc_dec((struct cq_desc *)desc, type,
110 color, q_number, completed_index);
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 *vlan = le16_to_cpu(desc->vlan);
136
137 if (*fcoe) {
138 *fcoe_sof = (u8)(le16_to_cpu(desc->checksum_fcoe) &
139 CQ_ENET_RQ_DESC_FCOE_SOF_MASK);
140 *fcoe_fc_crc_ok = (desc->flags &
141 CQ_ENET_RQ_DESC_FCOE_FC_CRC_OK) ? 1 : 0;
142 *fcoe_enc_error = (desc->flags &
143 CQ_ENET_RQ_DESC_FCOE_ENC_ERROR) ? 1 : 0;
144 *fcoe_eof = (u8)((desc->checksum_fcoe >>
145 CQ_ENET_RQ_DESC_FCOE_EOF_SHIFT) &
146 CQ_ENET_RQ_DESC_FCOE_EOF_MASK);
147 *checksum = 0;
148 } else {
149 *fcoe_sof = 0;
150 *fcoe_fc_crc_ok = 0;
151 *fcoe_enc_error = 0;
152 *fcoe_eof = 0;
153 *checksum = le16_to_cpu(desc->checksum_fcoe);
154 }
155
156 *tcp_udp_csum_ok =
157 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP_UDP_CSUM_OK) ? 1 : 0;
158 *udp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_UDP) ? 1 : 0;
159 *tcp = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_TCP) ? 1 : 0;
160 *ipv4_csum_ok =
161 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_CSUM_OK) ? 1 : 0;
162 *ipv6 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV6) ? 1 : 0;
163 *ipv4 = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4) ? 1 : 0;
164 *ipv4_fragment =
165 (desc->flags & CQ_ENET_RQ_DESC_FLAGS_IPV4_FRAGMENT) ? 1 : 0;
166 *fcs_ok = (desc->flags & CQ_ENET_RQ_DESC_FLAGS_FCS_OK) ? 1 : 0;
167}
168
169#endif /* _CQ_ENET_DESC_H_ */