xref: /freebsd/sys/dev/qlnx/qlnxe/eth_common.h (revision f6a3b357e9be4c6423c85eff9a847163a0d307c8)
1 /*
2  * Copyright (c) 2017-2018 Cavium, Inc.
3  * All rights reserved.
4  *
5  *  Redistribution and use in source and binary forms, with or without
6  *  modification, are permitted provided that the following conditions
7  *  are met:
8  *
9  *  1. Redistributions of source code must retain the above copyright
10  *     notice, this list of conditions and the following disclaimer.
11  *  2. Redistributions in binary form must reproduce the above copyright
12  *     notice, this list of conditions and the following disclaimer in the
13  *     documentation and/or other materials provided with the distribution.
14  *
15  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16  *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19  *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25  *  POSSIBILITY OF SUCH DAMAGE.
26  *
27  * $FreeBSD$
28  *
29  */
30 
31 
32 #ifndef __ETH_COMMON__
33 #define __ETH_COMMON__
34 /********************/
35 /* ETH FW CONSTANTS */
36 /********************/
37 
38 /* FP HSI version. FP HSI is compatible if (fwVer.major == drvVer.major && fwVer.minor >= drvVer.minor) */
39 #define ETH_HSI_VER_MAJOR                   3    /* ETH FP HSI Major version */
40 #define ETH_HSI_VER_MINOR                   10   /* ETH FP HSI Minor version */
41 
42 #define ETH_HSI_VER_NO_PKT_LEN_TUNN         5  /* Alias for 8.7.x.x/8.8.x.x ETH FP HSI MINOR version. In this version driver is not required to set pkt_len field in eth_tx_1st_bd struct, and tunneling offload is not supported. */
43 
44 #define ETH_CACHE_LINE_SIZE                 64
45 #define ETH_RX_CQE_GAP                      32
46 #define ETH_MAX_RAMROD_PER_CON              8
47 #define ETH_TX_BD_PAGE_SIZE_BYTES           4096
48 #define ETH_RX_BD_PAGE_SIZE_BYTES           4096
49 #define ETH_RX_CQE_PAGE_SIZE_BYTES          4096
50 #define ETH_RX_NUM_NEXT_PAGE_BDS            2
51 
52 /* Limitation for Tunneled LSO Packets on the offset (in bytes) of the inner IP header (relevant to LSO for tunneled packet): */
53 #define ETH_MAX_TUNN_LSO_INNER_IPV4_OFFSET          253 /* Offset is limited to 253 bytes (inclusive). */
54 #define ETH_MAX_TUNN_LSO_INNER_IPV6_OFFSET          251 /* Offset is limited to 251 bytes (inclusive). */
55 
56 #define ETH_TX_MIN_BDS_PER_NON_LSO_PKT              1
57 #define ETH_TX_MAX_BDS_PER_NON_LSO_PACKET           18
58 #define ETH_TX_MAX_BDS_PER_LSO_PACKET               255
59 #define ETH_TX_MAX_LSO_HDR_NBD                      4
60 #define ETH_TX_MIN_BDS_PER_LSO_PKT                  3
61 #define ETH_TX_MIN_BDS_PER_TUNN_IPV6_WITH_EXT_PKT   3
62 #define ETH_TX_MIN_BDS_PER_IPV6_WITH_EXT_PKT        2
63 #define ETH_TX_MIN_BDS_PER_PKT_W_LOOPBACK_MODE      2
64 #define ETH_TX_MAX_NON_LSO_PKT_LEN                  (9700 - (4 + 4 + 12 + 8)) /* (QM_REG_TASKBYTECRDCOST_0, QM_VOQ_BYTE_CRD_TASK_COST) - (VLAN-TAG + CRC + IPG + PREAMBLE) */
65 #define ETH_TX_MAX_LSO_HDR_BYTES                    510
66 #define ETH_TX_LSO_WINDOW_BDS_NUM                   (18 - 1)    /* Number of BDs to consider for LSO sliding window restriction is (ETH_TX_LSO_WINDOW_BDS_NUM - hdr_nbd) */
67 #define ETH_TX_LSO_WINDOW_MIN_LEN                   9700  /* Minimum data length (in bytes) in LSO sliding window */
68 #define ETH_TX_MAX_LSO_PAYLOAD_LEN                  0xFE000  /* Maximum LSO packet TCP payload length (in bytes) */
69 #define ETH_TX_NUM_SAME_AS_LAST_ENTRIES             320 /* Number of same-as-last resources in tx switching */
70 #define ETH_TX_INACTIVE_SAME_AS_LAST                0xFFFF /* Value for a connection for which same as last feature is disabled */
71 
72 #define ETH_NUM_STATISTIC_COUNTERS                  MAX_NUM_VPORTS                                     /* Maximum number of statistics counters */
73 #define ETH_NUM_STATISTIC_COUNTERS_DOUBLE_VF_ZONE   (ETH_NUM_STATISTIC_COUNTERS - MAX_NUM_VFS/2)       /* Maximum number of statistics counters when doubled VF zone used */
74 #define ETH_NUM_STATISTIC_COUNTERS_QUAD_VF_ZONE     (ETH_NUM_STATISTIC_COUNTERS - 3*MAX_NUM_VFS/4)     /* Maximum number of statistics counters when quad VF zone used */
75 
76 #define ETH_RX_MAX_BUFF_PER_PKT             5       /* Maximum number of buffers, used for RX packet placement */
77 #define ETH_RX_BD_THRESHOLD                12       /* Minimum number of free BDs in RX ring, that guarantee receiving of at least one RX packet. */
78 
79 /* num of MAC/VLAN filters */
80 #define ETH_NUM_MAC_FILTERS                 512
81 #define ETH_NUM_VLAN_FILTERS                512
82 
83 /* approx. multicast constants */
84 #define ETH_MULTICAST_BIN_FROM_MAC_SEED     0     /* CRC seed for multicast bin calculation */
85 #define ETH_MULTICAST_MAC_BINS              256
86 #define ETH_MULTICAST_MAC_BINS_IN_REGS      (ETH_MULTICAST_MAC_BINS / 32)
87 
88 /*  ethernet vport update constants */
89 #define ETH_FILTER_RULES_COUNT              10
90 #define ETH_RSS_IND_TABLE_ENTRIES_NUM       128  /* number of RSS indirection table entries, per Vport) */
91 #define ETH_RSS_KEY_SIZE_REGS               10  /* Length of RSS key (in regs) */
92 #define ETH_RSS_ENGINE_NUM_K2               207 /* number of available RSS engines in K2 */
93 #define ETH_RSS_ENGINE_NUM_BB               127 /* number of available RSS engines in BB */
94 
95 /* TPA constants */
96 #define ETH_TPA_MAX_AGGS_NUM              64      /* Maximum number of open TPA aggregations */
97 #define ETH_TPA_CQE_START_LEN_LIST_SIZE   ETH_RX_MAX_BUFF_PER_PKT   /* Maximum number of additional buffers, reported by TPA-start CQE */
98 #define ETH_TPA_CQE_CONT_LEN_LIST_SIZE    6       /* Maximum number of buffers, reported by TPA-continue CQE */
99 #define ETH_TPA_CQE_END_LEN_LIST_SIZE     4       /* Maximum number of buffers, reported by TPA-end CQE */
100 
101 /* Control frame check constants */
102 #define ETH_CTL_FRAME_ETH_TYPE_NUM              4        /* Number of etherType values configured by the driver for control frame check */
103 
104 /* GFS constants */
105 #define ETH_GFT_TRASHCAN_VPORT         0x1FF          /* GFT drop flow vport number */
106 
107 
108 
109 /*
110  * Destination port mode
111  */
112 enum dest_port_mode
113 {
114 	DEST_PORT_PHY /* Send to physical port. */,
115 	DEST_PORT_LOOPBACK /* Send to loopback port. */,
116 	DEST_PORT_PHY_LOOPBACK /* Send to physical and loopback port. */,
117 	DEST_PORT_DROP /* Drop the packet in PBF. */,
118 	MAX_DEST_PORT_MODE
119 };
120 
121 
122 /*
123  * Ethernet address type
124  */
125 enum eth_addr_type
126 {
127 	BROADCAST_ADDRESS,
128 	MULTICAST_ADDRESS,
129 	UNICAST_ADDRESS,
130 	UNKNOWN_ADDRESS,
131 	MAX_ETH_ADDR_TYPE
132 };
133 
134 
135 struct eth_tx_1st_bd_flags
136 {
137 	u8 bitfields;
138 #define ETH_TX_1ST_BD_FLAGS_START_BD_MASK         0x1 /* Set to 1 in the first BD. (for debug) */
139 #define ETH_TX_1ST_BD_FLAGS_START_BD_SHIFT        0
140 #define ETH_TX_1ST_BD_FLAGS_FORCE_VLAN_MODE_MASK  0x1 /* Do not allow additional VLAN manipulations on this packet. */
141 #define ETH_TX_1ST_BD_FLAGS_FORCE_VLAN_MODE_SHIFT 1
142 #define ETH_TX_1ST_BD_FLAGS_IP_CSUM_MASK          0x1 /* Recalculate IP checksum. For tunneled packet - relevant to inner header. */
143 #define ETH_TX_1ST_BD_FLAGS_IP_CSUM_SHIFT         2
144 #define ETH_TX_1ST_BD_FLAGS_L4_CSUM_MASK          0x1 /* Recalculate TCP/UDP checksum. For tunneled packet - relevant to inner header. */
145 #define ETH_TX_1ST_BD_FLAGS_L4_CSUM_SHIFT         3
146 #define ETH_TX_1ST_BD_FLAGS_VLAN_INSERTION_MASK   0x1 /* If set, insert VLAN tag from vlan field to the packet. For tunneled packet - relevant to outer header. */
147 #define ETH_TX_1ST_BD_FLAGS_VLAN_INSERTION_SHIFT  4
148 #define ETH_TX_1ST_BD_FLAGS_LSO_MASK              0x1 /* If set, this is an LSO packet. Note: For Tunneled LSO packets, the offset of the inner IPV4 (and IPV6) header is limited to 253 (and 251 respectively) bytes, inclusive. */
149 #define ETH_TX_1ST_BD_FLAGS_LSO_SHIFT             5
150 #define ETH_TX_1ST_BD_FLAGS_TUNN_IP_CSUM_MASK     0x1 /* Recalculate Tunnel IP Checksum (if Tunnel IP Header is IPv4) */
151 #define ETH_TX_1ST_BD_FLAGS_TUNN_IP_CSUM_SHIFT    6
152 #define ETH_TX_1ST_BD_FLAGS_TUNN_L4_CSUM_MASK     0x1 /* Recalculate Tunnel UDP/GRE Checksum (Depending on Tunnel Type) */
153 #define ETH_TX_1ST_BD_FLAGS_TUNN_L4_CSUM_SHIFT    7
154 };
155 
156 /*
157  * The parsing information data for the first tx bd of a given packet.
158  */
159 struct eth_tx_data_1st_bd
160 {
161 	__le16 vlan /* VLAN tag to insert to packet (if enabled by vlan_insertion flag). */;
162 	u8 nbds /* Number of BDs in packet. Should be at least 1 in non-LSO packet and at least 3 in LSO (or Tunnel with IPv6+ext) packet. */;
163 	struct eth_tx_1st_bd_flags bd_flags;
164 	__le16 bitfields;
165 #define ETH_TX_DATA_1ST_BD_TUNN_FLAG_MASK  0x1 /* Indicates a tunneled packet. Must be set for encapsulated packet. */
166 #define ETH_TX_DATA_1ST_BD_TUNN_FLAG_SHIFT 0
167 #define ETH_TX_DATA_1ST_BD_RESERVED0_MASK  0x1
168 #define ETH_TX_DATA_1ST_BD_RESERVED0_SHIFT 1
169 #define ETH_TX_DATA_1ST_BD_PKT_LEN_MASK    0x3FFF /* Total packet length - must be filled for non-LSO packets. */
170 #define ETH_TX_DATA_1ST_BD_PKT_LEN_SHIFT   2
171 };
172 
173 /*
174  * The parsing information data for the second tx bd of a given packet.
175  */
176 struct eth_tx_data_2nd_bd
177 {
178 	__le16 tunn_ip_size /* For tunnel with IPv6+ext - Tunnel header IP datagram length (in BYTEs) */;
179 	__le16 bitfields1;
180 #define ETH_TX_DATA_2ND_BD_TUNN_INNER_L2_HDR_SIZE_W_MASK  0xF /* For Tunnel header with IPv6 ext. - Inner L2 Header Size (in 2-byte WORDs) */
181 #define ETH_TX_DATA_2ND_BD_TUNN_INNER_L2_HDR_SIZE_W_SHIFT 0
182 #define ETH_TX_DATA_2ND_BD_TUNN_INNER_ETH_TYPE_MASK       0x3 /* For Tunnel header with IPv6 ext. - Inner L2 Header MAC DA Type (use enum eth_addr_type) */
183 #define ETH_TX_DATA_2ND_BD_TUNN_INNER_ETH_TYPE_SHIFT      4
184 #define ETH_TX_DATA_2ND_BD_DEST_PORT_MODE_MASK            0x3 /* Destination port mode. (use enum dest_port_mode) */
185 #define ETH_TX_DATA_2ND_BD_DEST_PORT_MODE_SHIFT           6
186 #define ETH_TX_DATA_2ND_BD_START_BD_MASK                  0x1 /* Should be 0 in all the BDs, except the first one. (for debug) */
187 #define ETH_TX_DATA_2ND_BD_START_BD_SHIFT                 8
188 #define ETH_TX_DATA_2ND_BD_TUNN_TYPE_MASK                 0x3 /* For Tunnel header with IPv6 ext. - Tunnel Type (use enum eth_tx_tunn_type) */
189 #define ETH_TX_DATA_2ND_BD_TUNN_TYPE_SHIFT                9
190 #define ETH_TX_DATA_2ND_BD_TUNN_INNER_IPV6_MASK           0x1 /* For LSO / Tunnel header with IPv6+ext - Set if inner header is IPv6 */
191 #define ETH_TX_DATA_2ND_BD_TUNN_INNER_IPV6_SHIFT          11
192 #define ETH_TX_DATA_2ND_BD_IPV6_EXT_MASK                  0x1 /* In tunneling mode - Set to 1 when the Inner header is IPv6 with extension. Otherwise set to 1 if the header is IPv6 with extension. */
193 #define ETH_TX_DATA_2ND_BD_IPV6_EXT_SHIFT                 12
194 #define ETH_TX_DATA_2ND_BD_TUNN_IPV6_EXT_MASK             0x1 /* Set to 1 if Tunnel (outer = encapsulating) header has IPv6 ext. (Note: 3rd BD is required, hence EDPM does not support Tunnel [outer] header with Ipv6Ext) */
195 #define ETH_TX_DATA_2ND_BD_TUNN_IPV6_EXT_SHIFT            13
196 #define ETH_TX_DATA_2ND_BD_L4_UDP_MASK                    0x1 /* Set if (inner) L4 protocol is UDP. (Required when IPv6+ext (or tunnel with inner or outer Ipv6+ext) and l4_csum is set) */
197 #define ETH_TX_DATA_2ND_BD_L4_UDP_SHIFT                   14
198 #define ETH_TX_DATA_2ND_BD_L4_PSEUDO_CSUM_MODE_MASK       0x1 /* The pseudo header checksum type in the L4 checksum field. Required when IPv6+ext and l4_csum is set. (use enum eth_l4_pseudo_checksum_mode) */
199 #define ETH_TX_DATA_2ND_BD_L4_PSEUDO_CSUM_MODE_SHIFT      15
200 	__le16 bitfields2;
201 #define ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_MASK     0x1FFF /* For inner/outer header IPv6+ext - (inner) L4 header offset (in 2-byte WORDs). For regular packet - offset from the beginning of the packet. For tunneled packet - offset from the beginning of the inner header */
202 #define ETH_TX_DATA_2ND_BD_L4_HDR_START_OFFSET_W_SHIFT    0
203 #define ETH_TX_DATA_2ND_BD_RESERVED0_MASK                 0x7
204 #define ETH_TX_DATA_2ND_BD_RESERVED0_SHIFT                13
205 };
206 
207 /*
208  * Firmware data for L2-EDPM packet.
209  */
210 struct eth_edpm_fw_data
211 {
212 	struct eth_tx_data_1st_bd data_1st_bd /* Parsing information data from the 1st BD. */;
213 	struct eth_tx_data_2nd_bd data_2nd_bd /* Parsing information data from the 2nd BD. */;
214 	__le32 reserved;
215 };
216 
217 
218 /*
219  * tunneling parsing flags
220  */
221 struct eth_tunnel_parsing_flags
222 {
223 	u8 flags;
224 #define ETH_TUNNEL_PARSING_FLAGS_TYPE_MASK              0x3 /* 0 - no tunneling, 1 - GENEVE, 2 - GRE, 3 - VXLAN (use enum eth_rx_tunn_type) */
225 #define ETH_TUNNEL_PARSING_FLAGS_TYPE_SHIFT             0
226 #define ETH_TUNNEL_PARSING_FLAGS_TENNANT_ID_EXIST_MASK  0x1 /*  If it s not an encapsulated packet then put 0x0. If it s an encapsulated packet but the tenant-id doesn t exist then put 0x0. Else put 0x1 */
227 #define ETH_TUNNEL_PARSING_FLAGS_TENNANT_ID_EXIST_SHIFT 2
228 #define ETH_TUNNEL_PARSING_FLAGS_NEXT_PROTOCOL_MASK     0x3 /* Type of the next header above the tunneling: 0 - unknown, 1 - L2, 2 - Ipv4, 3 - IPv6 (use enum tunnel_next_protocol) */
229 #define ETH_TUNNEL_PARSING_FLAGS_NEXT_PROTOCOL_SHIFT    3
230 #define ETH_TUNNEL_PARSING_FLAGS_FIRSTHDRIPMATCH_MASK   0x1 /* The result of comparing the DA-ip of the tunnel header. */
231 #define ETH_TUNNEL_PARSING_FLAGS_FIRSTHDRIPMATCH_SHIFT  5
232 #define ETH_TUNNEL_PARSING_FLAGS_IPV4_FRAGMENT_MASK     0x1
233 #define ETH_TUNNEL_PARSING_FLAGS_IPV4_FRAGMENT_SHIFT    6
234 #define ETH_TUNNEL_PARSING_FLAGS_IPV4_OPTIONS_MASK      0x1
235 #define ETH_TUNNEL_PARSING_FLAGS_IPV4_OPTIONS_SHIFT     7
236 };
237 
238 /*
239  * PMD flow control bits
240  */
241 struct eth_pmd_flow_flags
242 {
243 	u8 flags;
244 #define ETH_PMD_FLOW_FLAGS_VALID_MASK     0x1 /* CQE valid bit */
245 #define ETH_PMD_FLOW_FLAGS_VALID_SHIFT    0
246 #define ETH_PMD_FLOW_FLAGS_TOGGLE_MASK    0x1 /* CQE ring toggle bit */
247 #define ETH_PMD_FLOW_FLAGS_TOGGLE_SHIFT   1
248 #define ETH_PMD_FLOW_FLAGS_RESERVED_MASK  0x3F
249 #define ETH_PMD_FLOW_FLAGS_RESERVED_SHIFT 2
250 };
251 
252 /*
253  * Regular ETH Rx FP CQE.
254  */
255 struct eth_fast_path_rx_reg_cqe
256 {
257 	u8 type /* CQE type (use enum eth_rx_cqe_type) */;
258 	u8 bitfields;
259 #define ETH_FAST_PATH_RX_REG_CQE_RSS_HASH_TYPE_MASK  0x7 /* Type of calculated RSS hash (use enum rss_hash_type) */
260 #define ETH_FAST_PATH_RX_REG_CQE_RSS_HASH_TYPE_SHIFT 0
261 #define ETH_FAST_PATH_RX_REG_CQE_TC_MASK             0xF /* Traffic Class */
262 #define ETH_FAST_PATH_RX_REG_CQE_TC_SHIFT            3
263 #define ETH_FAST_PATH_RX_REG_CQE_RESERVED0_MASK      0x1
264 #define ETH_FAST_PATH_RX_REG_CQE_RESERVED0_SHIFT     7
265 	__le16 pkt_len /* Total packet length (from the parser) */;
266 	struct parsing_and_err_flags pars_flags /* Parsing and error flags from the parser */;
267 	__le16 vlan_tag /* 802.1q VLAN tag */;
268 	__le32 rss_hash /* RSS hash result */;
269 	__le16 len_on_first_bd /* Number of bytes placed on first BD */;
270 	u8 placement_offset /* Offset of placement from BD start */;
271 	struct eth_tunnel_parsing_flags tunnel_pars_flags /* Tunnel Parsing Flags */;
272 	u8 bd_num /* Number of BDs, used for packet */;
273 	u8 reserved;
274 	__le16 flow_id /* aRFS flow ID. */;
275 	u8 reserved1[11];
276 	struct eth_pmd_flow_flags pmd_flags /* CQE valid and toggle bits */;
277 };
278 
279 
280 /*
281  * TPA-continue ETH Rx FP CQE.
282  */
283 struct eth_fast_path_rx_tpa_cont_cqe
284 {
285 	u8 type /* CQE type (use enum eth_rx_cqe_type) */;
286 	u8 tpa_agg_index /* TPA aggregation index */;
287 	__le16 len_list[ETH_TPA_CQE_CONT_LEN_LIST_SIZE] /* List of the segment sizes */;
288 	u8 reserved;
289 	u8 reserved1 /* FW reserved. */;
290 	__le16 reserved2[ETH_TPA_CQE_CONT_LEN_LIST_SIZE] /* FW reserved. */;
291 	u8 reserved3[3];
292 	struct eth_pmd_flow_flags pmd_flags /* CQE valid and toggle bits */;
293 };
294 
295 
296 /*
297  * TPA-end ETH Rx FP CQE .
298  */
299 struct eth_fast_path_rx_tpa_end_cqe
300 {
301 	u8 type /* CQE type (use enum eth_rx_cqe_type) */;
302 	u8 tpa_agg_index /* TPA aggregation index */;
303 	__le16 total_packet_len /* Total aggregated packet length */;
304 	u8 num_of_bds /* Total number of BDs comprising the packet */;
305 	u8 end_reason /* Aggregation end reason. Use enum eth_tpa_end_reason */;
306 	__le16 num_of_coalesced_segs /* Number of coalesced TCP segments */;
307 	__le32 ts_delta /* TCP timestamp delta */;
308 	__le16 len_list[ETH_TPA_CQE_END_LEN_LIST_SIZE] /* List of the segment sizes */;
309 	__le16 reserved3[ETH_TPA_CQE_END_LEN_LIST_SIZE] /* FW reserved. */;
310 	__le16 reserved1;
311 	u8 reserved2 /* FW reserved. */;
312 	struct eth_pmd_flow_flags pmd_flags /* CQE valid and toggle bits */;
313 };
314 
315 
316 /*
317  * TPA-start ETH Rx FP CQE.
318  */
319 struct eth_fast_path_rx_tpa_start_cqe
320 {
321 	u8 type /* CQE type (use enum eth_rx_cqe_type) */;
322 	u8 bitfields;
323 #define ETH_FAST_PATH_RX_TPA_START_CQE_RSS_HASH_TYPE_MASK  0x7 /* Type of calculated RSS hash (use enum rss_hash_type) */
324 #define ETH_FAST_PATH_RX_TPA_START_CQE_RSS_HASH_TYPE_SHIFT 0
325 #define ETH_FAST_PATH_RX_TPA_START_CQE_TC_MASK             0xF /* Traffic Class */
326 #define ETH_FAST_PATH_RX_TPA_START_CQE_TC_SHIFT            3
327 #define ETH_FAST_PATH_RX_TPA_START_CQE_RESERVED0_MASK      0x1
328 #define ETH_FAST_PATH_RX_TPA_START_CQE_RESERVED0_SHIFT     7
329 	__le16 seg_len /* Segment length (packetLen from the parser) */;
330 	struct parsing_and_err_flags pars_flags /* Parsing and error flags from the parser */;
331 	__le16 vlan_tag /* 802.1q VLAN tag */;
332 	__le32 rss_hash /* RSS hash result */;
333 	__le16 len_on_first_bd /* Number of bytes placed on first BD */;
334 	u8 placement_offset /* Offset of placement from BD start */;
335 	struct eth_tunnel_parsing_flags tunnel_pars_flags /* Tunnel Parsing Flags */;
336 	u8 tpa_agg_index /* TPA aggregation index */;
337 	u8 header_len /* Packet L2+L3+L4 header length */;
338 	__le16 ext_bd_len_list[ETH_TPA_CQE_START_LEN_LIST_SIZE] /* Additional BDs length list. */;
339 	__le16 flow_id /* aRFS flow ID. */;
340 	u8 reserved;
341 	struct eth_pmd_flow_flags pmd_flags /* CQE valid and toggle bits */;
342 };
343 
344 
345 /*
346  * The L4 pseudo checksum mode for Ethernet
347  */
348 enum eth_l4_pseudo_checksum_mode
349 {
350 	ETH_L4_PSEUDO_CSUM_CORRECT_LENGTH /* Pseudo Header checksum on packet is calculated with the correct packet length field. */,
351 	ETH_L4_PSEUDO_CSUM_ZERO_LENGTH /* Pseudo Header checksum on packet is calculated with zero length field. */,
352 	MAX_ETH_L4_PSEUDO_CHECKSUM_MODE
353 };
354 
355 
356 
357 struct eth_rx_bd
358 {
359 	struct regpair addr /* single continues buffer */;
360 };
361 
362 
363 /*
364  * regular ETH Rx SP CQE
365  */
366 struct eth_slow_path_rx_cqe
367 {
368 	u8 type /* CQE type (use enum eth_rx_cqe_type) */;
369 	u8 ramrod_cmd_id;
370 	u8 error_flag;
371 	u8 reserved[25];
372 	__le16 echo;
373 	u8 reserved1;
374 	struct eth_pmd_flow_flags pmd_flags /* CQE valid and toggle bits */;
375 };
376 
377 /*
378  * union for all ETH Rx CQE types
379  */
380 union eth_rx_cqe
381 {
382 	struct eth_fast_path_rx_reg_cqe fast_path_regular /* Regular FP CQE */;
383 	struct eth_fast_path_rx_tpa_start_cqe fast_path_tpa_start /* TPA-start CQE */;
384 	struct eth_fast_path_rx_tpa_cont_cqe fast_path_tpa_cont /* TPA-continue CQE */;
385 	struct eth_fast_path_rx_tpa_end_cqe fast_path_tpa_end /* TPA-end CQE */;
386 	struct eth_slow_path_rx_cqe slow_path /* SP CQE */;
387 };
388 
389 
390 /*
391  * ETH Rx CQE type
392  */
393 enum eth_rx_cqe_type
394 {
395 	ETH_RX_CQE_TYPE_UNUSED,
396 	ETH_RX_CQE_TYPE_REGULAR /* Regular FP ETH Rx CQE */,
397 	ETH_RX_CQE_TYPE_SLOW_PATH /* Slow path ETH Rx CQE */,
398 	ETH_RX_CQE_TYPE_TPA_START /* TPA start ETH Rx CQE */,
399 	ETH_RX_CQE_TYPE_TPA_CONT /* TPA Continue ETH Rx CQE */,
400 	ETH_RX_CQE_TYPE_TPA_END /* TPA end ETH Rx CQE */,
401 	MAX_ETH_RX_CQE_TYPE
402 };
403 
404 
405 /*
406  * Wrapper for PD RX CQE - used in order to cover full cache line when writing CQE
407  */
408 struct eth_rx_pmd_cqe
409 {
410 	union eth_rx_cqe cqe /* CQE data itself */;
411 	u8 reserved[ETH_RX_CQE_GAP];
412 };
413 
414 
415 /*
416  * Eth RX Tunnel Type
417  */
418 enum eth_rx_tunn_type
419 {
420 	ETH_RX_NO_TUNN /* No Tunnel. */,
421 	ETH_RX_TUNN_GENEVE /* GENEVE Tunnel. */,
422 	ETH_RX_TUNN_GRE /* GRE Tunnel. */,
423 	ETH_RX_TUNN_VXLAN /* VXLAN Tunnel. */,
424 	MAX_ETH_RX_TUNN_TYPE
425 };
426 
427 
428 
429 /*
430  * Aggregation end reason.
431  */
432 enum eth_tpa_end_reason
433 {
434 	ETH_AGG_END_UNUSED,
435 	ETH_AGG_END_SP_UPDATE /* SP configuration update */,
436 	ETH_AGG_END_MAX_LEN /* Maximum aggregation length or maximum buffer number used. */,
437 	ETH_AGG_END_LAST_SEG /* TCP PSH flag or TCP payload length below continue threshold. */,
438 	ETH_AGG_END_TIMEOUT /* Timeout expiration. */,
439 	ETH_AGG_END_NOT_CONSISTENT /* Packet header not consistency: different IPv4 TOS, TTL or flags, IPv6 TC, Hop limit or Flow label, TCP header length or TS options. In GRO different TS value, SMAC, DMAC, ackNum, windowSize or VLAN */,
440 	ETH_AGG_END_OUT_OF_ORDER /* Out of order or retransmission packet: sequence, ack or timestamp not consistent with previous segment. */,
441 	ETH_AGG_END_NON_TPA_SEG /* Next segment cant be aggregated due to LLC/SNAP, IP error, IP fragment, IPv4 options, IPv6 extension, IP ECN = CE, TCP errors, TCP options, zero TCP payload length , TCP flags or not supported tunnel header options.  */,
442 	MAX_ETH_TPA_END_REASON
443 };
444 
445 
446 
447 /*
448  * The first tx bd of a given packet
449  */
450 struct eth_tx_1st_bd
451 {
452 	struct regpair addr /* Single continuous buffer */;
453 	__le16 nbytes /* Number of bytes in this BD. */;
454 	struct eth_tx_data_1st_bd data /* Parsing information data. */;
455 };
456 
457 
458 
459 /*
460  * The second tx bd of a given packet
461  */
462 struct eth_tx_2nd_bd
463 {
464 	struct regpair addr /* Single continuous buffer */;
465 	__le16 nbytes /* Number of bytes in this BD. */;
466 	struct eth_tx_data_2nd_bd data /* Parsing information data. */;
467 };
468 
469 
470 /*
471  * The parsing information data for the third tx bd of a given packet.
472  */
473 struct eth_tx_data_3rd_bd
474 {
475 	__le16 lso_mss /* For LSO packet - the MSS in bytes. */;
476 	__le16 bitfields;
477 #define ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_MASK  0xF /* For LSO with inner/outer IPv6+ext - TCP header length (in 4-byte WORDs) */
478 #define ETH_TX_DATA_3RD_BD_TCP_HDR_LEN_DW_SHIFT 0
479 #define ETH_TX_DATA_3RD_BD_HDR_NBD_MASK         0xF /* LSO - number of BDs which contain headers. value should be in range (1..ETH_TX_MAX_LSO_HDR_NBD). */
480 #define ETH_TX_DATA_3RD_BD_HDR_NBD_SHIFT        4
481 #define ETH_TX_DATA_3RD_BD_START_BD_MASK        0x1 /* Should be 0 in all the BDs, except the first one. (for debug) */
482 #define ETH_TX_DATA_3RD_BD_START_BD_SHIFT       8
483 #define ETH_TX_DATA_3RD_BD_RESERVED0_MASK       0x7F
484 #define ETH_TX_DATA_3RD_BD_RESERVED0_SHIFT      9
485 	u8 tunn_l4_hdr_start_offset_w /* For tunnel with IPv6+ext - Pointer to the tunnel L4 Header (in 2-byte WORDs) */;
486 	u8 tunn_hdr_size_w /* For tunnel with IPv6+ext - Total size of the Tunnel Header (in 2-byte WORDs) */;
487 };
488 
489 /*
490  * The third tx bd of a given packet
491  */
492 struct eth_tx_3rd_bd
493 {
494 	struct regpair addr /* Single continuous buffer */;
495 	__le16 nbytes /* Number of bytes in this BD. */;
496 	struct eth_tx_data_3rd_bd data /* Parsing information data. */;
497 };
498 
499 
500 /*
501  * Complementary information for the regular tx bd of a given packet.
502  */
503 struct eth_tx_data_bd
504 {
505 	__le16 reserved0;
506 	__le16 bitfields;
507 #define ETH_TX_DATA_BD_RESERVED1_MASK  0xFF
508 #define ETH_TX_DATA_BD_RESERVED1_SHIFT 0
509 #define ETH_TX_DATA_BD_START_BD_MASK   0x1 /* Should be 0 in all the BDs, except the first one. (for debug) */
510 #define ETH_TX_DATA_BD_START_BD_SHIFT  8
511 #define ETH_TX_DATA_BD_RESERVED2_MASK  0x7F
512 #define ETH_TX_DATA_BD_RESERVED2_SHIFT 9
513 	__le16 reserved3;
514 };
515 
516 /*
517  * The common regular TX BD ring element
518  */
519 struct eth_tx_bd
520 {
521 	struct regpair addr /* Single continuous buffer */;
522 	__le16 nbytes /* Number of bytes in this BD. */;
523 	struct eth_tx_data_bd data /* Complementary information. */;
524 };
525 
526 
527 union eth_tx_bd_types
528 {
529 	struct eth_tx_1st_bd first_bd /* The first tx bd of a given packet */;
530 	struct eth_tx_2nd_bd second_bd /* The second tx bd of a given packet */;
531 	struct eth_tx_3rd_bd third_bd /* The third tx bd of a given packet */;
532 	struct eth_tx_bd reg_bd /* The common non-special bd */;
533 };
534 
535 
536 
537 
538 
539 
540 /*
541  * Eth Tx Tunnel Type
542  */
543 enum eth_tx_tunn_type
544 {
545 	ETH_TX_TUNN_GENEVE /* GENEVE Tunnel. */,
546 	ETH_TX_TUNN_TTAG /* T-Tag Tunnel. */,
547 	ETH_TX_TUNN_GRE /* GRE Tunnel. */,
548 	ETH_TX_TUNN_VXLAN /* VXLAN Tunnel. */,
549 	MAX_ETH_TX_TUNN_TYPE
550 };
551 
552 
553 /*
554  * Ystorm Queue Zone
555  */
556 struct xstorm_eth_queue_zone
557 {
558 	struct coalescing_timeset int_coalescing_timeset /* Tx interrupt coalescing TimeSet */;
559 	u8 reserved[7];
560 };
561 
562 
563 /*
564  * ETH doorbell data
565  */
566 struct eth_db_data
567 {
568 	u8 params;
569 #define ETH_DB_DATA_DEST_MASK         0x3 /* destination of doorbell (use enum db_dest) */
570 #define ETH_DB_DATA_DEST_SHIFT        0
571 #define ETH_DB_DATA_AGG_CMD_MASK      0x3 /* aggregative command to CM (use enum db_agg_cmd_sel) */
572 #define ETH_DB_DATA_AGG_CMD_SHIFT     2
573 #define ETH_DB_DATA_BYPASS_EN_MASK    0x1 /* enable QM bypass */
574 #define ETH_DB_DATA_BYPASS_EN_SHIFT   4
575 #define ETH_DB_DATA_RESERVED_MASK     0x1
576 #define ETH_DB_DATA_RESERVED_SHIFT    5
577 #define ETH_DB_DATA_AGG_VAL_SEL_MASK  0x3 /* aggregative value selection */
578 #define ETH_DB_DATA_AGG_VAL_SEL_SHIFT 6
579 	u8 agg_flags /* bit for every DQ counter flags in CM context that DQ can increment */;
580 	__le16 bd_prod;
581 };
582 
583 
584 /*
585  * RSS hash type
586  */
587 enum rss_hash_type
588 {
589 	RSS_HASH_TYPE_DEFAULT=0,
590 	RSS_HASH_TYPE_IPV4=1,
591 	RSS_HASH_TYPE_TCP_IPV4=2,
592 	RSS_HASH_TYPE_IPV6=3,
593 	RSS_HASH_TYPE_TCP_IPV6=4,
594 	RSS_HASH_TYPE_UDP_IPV4=5,
595 	RSS_HASH_TYPE_UDP_IPV6=6,
596 	MAX_RSS_HASH_TYPE
597 };
598 
599 #endif /* __ETH_COMMON__ */
600