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1/* SPDX-License-Identifier: GPL-2.0 */
2/* Copyright (C) 2018-2020, Intel Corporation. */
3
4#ifndef _ICE_FDIR_H_
5#define _ICE_FDIR_H_
6
7#define ICE_FDIR_TUN_PKT_OFF 50
8#define ICE_FDIR_MAX_RAW_PKT_SIZE (512 + ICE_FDIR_TUN_PKT_OFF)
9
10/* macros for offsets into packets for flow director programming */
11#define ICE_IPV4_SRC_ADDR_OFFSET 26
12#define ICE_IPV4_DST_ADDR_OFFSET 30
13#define ICE_IPV4_TCP_SRC_PORT_OFFSET 34
14#define ICE_IPV4_TCP_DST_PORT_OFFSET 36
15#define ICE_IPV4_UDP_SRC_PORT_OFFSET 34
16#define ICE_IPV4_UDP_DST_PORT_OFFSET 36
17#define ICE_IPV4_SCTP_SRC_PORT_OFFSET 34
18#define ICE_IPV4_SCTP_DST_PORT_OFFSET 36
19#define ICE_IPV4_PROTO_OFFSET 23
20#define ICE_IPV6_SRC_ADDR_OFFSET 22
21#define ICE_IPV6_DST_ADDR_OFFSET 38
22#define ICE_IPV6_TCP_SRC_PORT_OFFSET 54
23#define ICE_IPV6_TCP_DST_PORT_OFFSET 56
24#define ICE_IPV6_UDP_SRC_PORT_OFFSET 54
25#define ICE_IPV6_UDP_DST_PORT_OFFSET 56
26#define ICE_IPV6_SCTP_SRC_PORT_OFFSET 54
27#define ICE_IPV6_SCTP_DST_PORT_OFFSET 56
28#define ICE_MAC_ETHTYPE_OFFSET 12
29#define ICE_IPV4_TOS_OFFSET 15
30#define ICE_IPV4_TTL_OFFSET 22
31#define ICE_IPV6_TC_OFFSET 14
32#define ICE_IPV6_HLIM_OFFSET 21
33#define ICE_IPV6_PROTO_OFFSET 20
34#define ICE_IPV4_GTPU_TEID_OFFSET 46
35#define ICE_IPV4_GTPU_QFI_OFFSET 56
36#define ICE_IPV4_L2TPV3_SESS_ID_OFFSET 34
37#define ICE_IPV6_L2TPV3_SESS_ID_OFFSET 54
38#define ICE_IPV4_ESP_SPI_OFFSET 34
39#define ICE_IPV6_ESP_SPI_OFFSET 54
40#define ICE_IPV4_AH_SPI_OFFSET 38
41#define ICE_IPV6_AH_SPI_OFFSET 58
42#define ICE_IPV4_NAT_T_ESP_SPI_OFFSET 42
43#define ICE_IPV6_NAT_T_ESP_SPI_OFFSET 62
44
45#define ICE_FDIR_MAX_FLTRS 16384
46
47/* IP v4 has 2 flag bits that enable fragment processing: DF and MF. DF
48 * requests that the packet not be fragmented. MF indicates that a packet has
49 * been fragmented.
50 */
51#define ICE_FDIR_IPV4_PKT_FLAG_MF 0x20
52
53enum ice_fltr_prgm_desc_dest {
54 ICE_FLTR_PRGM_DESC_DEST_DROP_PKT,
55 ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_QINDEX,
56 ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_QGROUP,
57 ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_OTHER,
58};
59
60enum ice_fltr_prgm_desc_fd_status {
61 ICE_FLTR_PRGM_DESC_FD_STATUS_NONE,
62 ICE_FLTR_PRGM_DESC_FD_STATUS_FD_ID,
63};
64
65/* Flow Director (FD) Filter Programming descriptor */
66struct ice_fd_fltr_desc_ctx {
67 u32 fdid;
68 u16 qindex;
69 u16 cnt_index;
70 u16 fd_vsi;
71 u16 flex_val;
72 u8 comp_q;
73 u8 comp_report;
74 u8 fd_space;
75 u8 cnt_ena;
76 u8 evict_ena;
77 u8 toq;
78 u8 toq_prio;
79 u8 dpu_recipe;
80 u8 drop;
81 u8 flex_prio;
82 u8 flex_mdid;
83 u8 dtype;
84 u8 pcmd;
85 u8 desc_prof_prio;
86 u8 desc_prof;
87 u8 swap;
88 u8 fdid_prio;
89 u8 fdid_mdid;
90};
91
92#define ICE_FLTR_PRGM_FLEX_WORD_SIZE sizeof(__be16)
93
94struct ice_rx_flow_userdef {
95 u16 flex_word;
96 u16 flex_offset;
97 u16 flex_fltr;
98};
99
100struct ice_fdir_v4 {
101 __be32 dst_ip;
102 __be32 src_ip;
103 __be16 dst_port;
104 __be16 src_port;
105 __be32 l4_header;
106 __be32 sec_parm_idx; /* security parameter index */
107 u8 tos;
108 u8 ip_ver;
109 u8 proto;
110 u8 ttl;
111};
112
113#define ICE_IPV6_ADDR_LEN_AS_U32 4
114
115struct ice_fdir_v6 {
116 __be32 dst_ip[ICE_IPV6_ADDR_LEN_AS_U32];
117 __be32 src_ip[ICE_IPV6_ADDR_LEN_AS_U32];
118 __be16 dst_port;
119 __be16 src_port;
120 __be32 l4_header; /* next header */
121 __be32 sec_parm_idx; /* security parameter index */
122 u8 tc;
123 u8 proto;
124 u8 hlim;
125};
126
127struct ice_fdir_udp_gtp {
128 u8 flags;
129 u8 msg_type;
130 __be16 rsrvd_len;
131 __be32 teid;
132 __be16 rsrvd_seq_nbr;
133 u8 rsrvd_n_pdu_nbr;
134 u8 rsrvd_next_ext_type;
135 u8 rsvrd_ext_len;
136 u8 pdu_type:4,
137 spare:4;
138 u8 ppp:1,
139 rqi:1,
140 qfi:6;
141 u32 rsvrd;
142 u8 next_ext;
143};
144
145struct ice_fdir_l2tpv3 {
146 __be32 session_id;
147};
148
149struct ice_fdir_extra {
150 u8 dst_mac[ETH_ALEN]; /* dest MAC address */
151 u8 src_mac[ETH_ALEN]; /* src MAC address */
152 __be16 ether_type; /* for NON_IP_L2 */
153 u32 usr_def[2]; /* user data */
154 __be16 vlan_type; /* VLAN ethertype */
155 __be16 vlan_tag; /* VLAN tag info */
156};
157
158struct ice_fdir_fltr {
159 struct list_head fltr_node;
160 enum ice_fltr_ptype flow_type;
161
162 union {
163 struct ice_fdir_v4 v4;
164 struct ice_fdir_v6 v6;
165 } ip, mask;
166
167 struct ice_fdir_udp_gtp gtpu_data;
168 struct ice_fdir_udp_gtp gtpu_mask;
169
170 struct ice_fdir_l2tpv3 l2tpv3_data;
171 struct ice_fdir_l2tpv3 l2tpv3_mask;
172
173 struct ice_fdir_extra ext_data;
174 struct ice_fdir_extra ext_mask;
175
176 /* flex byte filter data */
177 __be16 flex_word;
178 /* queue region size (=2^q_region) */
179 u8 q_region;
180 u16 flex_offset;
181 u16 flex_fltr;
182
183 /* filter control */
184 u16 q_index;
185 u16 orig_q_index;
186 u16 dest_vsi;
187 u8 dest_ctl;
188 u8 cnt_ena;
189 u8 fltr_status;
190 u16 cnt_index;
191 u32 fltr_id;
192 u8 fdid_prio;
193 u8 comp_report;
194};
195
196/* Dummy packet filter definition structure */
197struct ice_fdir_base_pkt {
198 enum ice_fltr_ptype flow;
199 u16 pkt_len;
200 const u8 *pkt;
201 u16 tun_pkt_len;
202 const u8 *tun_pkt;
203};
204
205int ice_alloc_fd_res_cntr(struct ice_hw *hw, u16 *cntr_id);
206int ice_free_fd_res_cntr(struct ice_hw *hw, u16 cntr_id);
207int ice_alloc_fd_guar_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
208int ice_alloc_fd_shrd_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
209void
210ice_fdir_get_prgm_desc(struct ice_hw *hw, struct ice_fdir_fltr *input,
211 struct ice_fltr_desc *fdesc, bool add);
212int
213ice_fdir_get_gen_prgm_pkt(struct ice_hw *hw, struct ice_fdir_fltr *input,
214 u8 *pkt, bool frag, bool tun);
215int ice_get_fdir_cnt_all(struct ice_hw *hw);
216bool ice_fdir_is_dup_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
217bool ice_fdir_has_frag(enum ice_fltr_ptype flow);
218struct ice_fdir_fltr *
219ice_fdir_find_fltr_by_idx(struct ice_hw *hw, u32 fltr_idx);
220void
221ice_fdir_update_cntrs(struct ice_hw *hw, enum ice_fltr_ptype flow, bool add);
222void ice_fdir_list_add_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
223#endif /* _ICE_FDIR_H_ */