1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2001-2019
5 #ifndef _ICE_PROTOCOL_TYPE_H_
6 #define _ICE_PROTOCOL_TYPE_H_
7 #include "ice_flex_type.h"
8 #define ICE_IPV6_ADDR_LENGTH 16
10 /* Each recipe can match up to 5 different fields. Fields to match can be meta-
11 * data, values extracted from packet headers, or results from other recipes.
12 * One of the 5 fields is reserved for matching the switch ID. So, up to 4
13 * recipes can provide intermediate results to another one through chaining,
14 * e.g. recipes 0, 1, 2, and 3 can provide intermediate results to recipe 4.
16 #define ICE_NUM_WORDS_RECIPE 4
18 /* Max recipes that can be chained */
19 #define ICE_MAX_CHAIN_RECIPE 5
21 /* 1 word reserved for switch ID from allowed 5 words.
22 * So a recipe can have max 4 words. And you can chain 5 such recipes
23 * together. So maximum words that can be programmed for look up is 5 * 4.
25 #define ICE_MAX_CHAIN_WORDS (ICE_NUM_WORDS_RECIPE * ICE_MAX_CHAIN_RECIPE)
27 /* Field vector index corresponding to chaining */
28 #define ICE_CHAIN_FV_INDEX_START 47
30 enum ice_protocol_type
{
47 enum ice_sw_tunnel_type
{
53 ICE_SW_TUN_UDP
, /* This means all "UDP" tunnel types: VXLAN-GPE, VXLAN
56 ICE_ALL_TUNNELS
/* All tunnel types including NVGRE */
59 /* Decoders for ice_prot_id:
67 ICE_PROT_ID_INVAL
= 0,
68 ICE_PROT_MAC_OF_OR_S
= 1,
71 ICE_PROT_MAC_IN_MAC
= 7,
72 ICE_PROT_ETYPE_OL
= 9,
73 ICE_PROT_ETYPE_IL
= 10,
75 ICE_PROT_EVLAN_O
= 16,
77 ICE_PROT_VLAN_IF
= 18,
78 ICE_PROT_MPLS_OL_MINUS_1
= 27,
79 ICE_PROT_MPLS_OL_OR_OS
= 28,
80 ICE_PROT_MPLS_IL
= 29,
81 ICE_PROT_IPV4_OF_OR_S
= 32,
82 ICE_PROT_IPV4_IL
= 33,
83 ICE_PROT_IPV6_OF_OR_S
= 40,
84 ICE_PROT_IPV6_IL
= 41,
85 ICE_PROT_IPV6_FRAG
= 47,
88 ICE_PROT_UDP_IL_OR_S
= 53,
93 ICE_PROT_SCTP_IL
= 96,
94 ICE_PROT_ICMP_IL
= 98,
95 ICE_PROT_ICMPV6_IL
= 100,
96 ICE_PROT_VRRP_F
= 101,
98 ICE_PROT_ATAOE_OF
= 114,
99 ICE_PROT_CTRL_OF
= 116,
100 ICE_PROT_LLDP_OF
= 117,
101 ICE_PROT_ARP_OF
= 118,
102 ICE_PROT_EAPOL_OF
= 120,
103 ICE_PROT_META_ID
= 255, /* when offset == metaddata */
104 ICE_PROT_INVALID
= 255 /* when offset == 0xFF */
108 #define ICE_MAC_OFOS_HW 1
109 #define ICE_MAC_IL_HW 4
110 #define ICE_IPV4_OFOS_HW 32
111 #define ICE_IPV4_IL_HW 33
112 #define ICE_IPV6_OFOS_HW 40
113 #define ICE_IPV6_IL_HW 41
114 #define ICE_TCP_IL_HW 49
115 #define ICE_UDP_ILOS_HW 53
116 #define ICE_SCTP_IL_HW 96
118 /* ICE_UDP_OF is used to identify all 3 tunnel types
119 * VXLAN, GENEVE and VXLAN_GPE. To differentiate further
120 * need to use flags from the field vector
122 #define ICE_UDP_OF_HW 52 /* UDP Tunnels */
123 #define ICE_GRE_OF_HW 64 /* NVGRE */
124 #define ICE_META_DATA_ID_HW 255 /* this is used for tunnel type */
126 #define ICE_TUN_FLAG_MASK 0xFF
127 #define ICE_TUN_FLAG_FV_IND 2
129 #define ICE_PROTOCOL_MAX_ENTRIES 16
131 /* Mapping of software defined protocol ID to hardware defined protocol ID */
132 struct ice_protocol_entry
{
133 enum ice_protocol_type type
;
138 struct ice_ether_hdr
{
139 u8 dst_addr
[ETH_ALEN
];
140 u8 src_addr
[ETH_ALEN
];
144 struct ice_ether_vlan_hdr
{
145 u8 dst_addr
[ETH_ALEN
];
146 u8 src_addr
[ETH_ALEN
];
150 struct ice_ipv4_hdr
{
163 struct ice_ipv6_hdr
{
170 u8 src_addr
[ICE_IPV6_ADDR_LENGTH
];
171 u8 dst_addr
[ICE_IPV6_ADDR_LENGTH
];
174 struct ice_sctp_hdr
{
177 u32 verification_tag
;
188 struct ice_udp_tnl_hdr
{
200 struct ice_ether_hdr eth_hdr
;
201 struct ice_ipv4_hdr ipv4_hdr
;
202 struct ice_ipv6_hdr ice_ipv6_ofos_hdr
;
203 struct ice_l4_hdr l4_hdr
;
204 struct ice_sctp_hdr sctp_hdr
;
205 struct ice_udp_tnl_hdr tnl_hdr
;
206 struct ice_nvgre nvgre_hdr
;
209 /* This is mapping table entry that maps every word within a given protocol
210 * structure to the real byte offset as per the specification of that
212 * for e.g. dst address is 3 words in ethertype header and corresponding bytes
213 * are 0, 2, 3 in the actual packet header and src address is at 4, 6, 8
215 struct ice_prot_ext_tbl_entry
{
216 enum ice_protocol_type prot_type
;
217 /* Byte offset into header of given protocol type */
218 u8 offs
[sizeof(union ice_prot_hdr
)];
221 /* Extractions to be looked up for a given recipe */
222 struct ice_prot_lkup_ext
{
225 /* create a buffer to hold max words per recipe */
226 u16 field_off
[ICE_MAX_CHAIN_WORDS
];
228 struct ice_fv_word fv_words
[ICE_MAX_CHAIN_WORDS
];
230 /* Indicate field offsets that have field vector indices assigned */
231 ice_declare_bitmap(done
, ICE_MAX_CHAIN_WORDS
);
234 struct ice_pref_recipe_group
{
235 u8 n_val_pairs
; /* Number of valid pairs */
236 struct ice_fv_word pairs
[ICE_NUM_WORDS_RECIPE
];
239 struct ice_recp_grp_entry
{
240 struct LIST_ENTRY_TYPE l_entry
;
242 #define ICE_INVAL_CHAIN_IND 0xFF
245 u16 fv_idx
[ICE_NUM_WORDS_RECIPE
];
246 struct ice_pref_recipe_group r_group
;
248 #endif /* _ICE_PROTOCOL_TYPE_H_ */