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Linux kernel mirror (for testing)
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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_ETH_TYPE_F_OFFSET 12
12#define ICE_ETH_VLAN_TCI_OFFSET 14
13#define ICE_ETH_TYPE_VLAN_OFFSET 16
14#define ICE_IPV4_SRC_ADDR_OFFSET 26
15#define ICE_IPV4_DST_ADDR_OFFSET 30
16#define ICE_IPV4_TCP_SRC_PORT_OFFSET 34
17#define ICE_IPV4_TCP_DST_PORT_OFFSET 36
18#define ICE_IPV4_UDP_SRC_PORT_OFFSET 34
19#define ICE_IPV4_UDP_DST_PORT_OFFSET 36
20#define ICE_IPV4_SCTP_SRC_PORT_OFFSET 34
21#define ICE_IPV4_SCTP_DST_PORT_OFFSET 36
22#define ICE_IPV4_PROTO_OFFSET 23
23#define ICE_IPV6_SRC_ADDR_OFFSET 22
24#define ICE_IPV6_DST_ADDR_OFFSET 38
25#define ICE_IPV6_TCP_SRC_PORT_OFFSET 54
26#define ICE_IPV6_TCP_DST_PORT_OFFSET 56
27#define ICE_IPV6_UDP_SRC_PORT_OFFSET 54
28#define ICE_IPV6_UDP_DST_PORT_OFFSET 56
29#define ICE_IPV6_SCTP_SRC_PORT_OFFSET 54
30#define ICE_IPV6_SCTP_DST_PORT_OFFSET 56
31#define ICE_MAC_ETHTYPE_OFFSET 12
32#define ICE_IPV4_TOS_OFFSET 15
33#define ICE_IPV4_TTL_OFFSET 22
34#define ICE_IPV6_TC_OFFSET 14
35#define ICE_IPV6_HLIM_OFFSET 21
36#define ICE_IPV6_PROTO_OFFSET 20
37#define ICE_IPV4_GTPU_TEID_OFFSET 46
38#define ICE_IPV4_GTPU_QFI_OFFSET 56
39#define ICE_IPV4_L2TPV3_SESS_ID_OFFSET 34
40#define ICE_IPV6_L2TPV3_SESS_ID_OFFSET 54
41#define ICE_IPV4_ESP_SPI_OFFSET 34
42#define ICE_IPV6_ESP_SPI_OFFSET 54
43#define ICE_IPV4_AH_SPI_OFFSET 38
44#define ICE_IPV6_AH_SPI_OFFSET 58
45#define ICE_IPV4_NAT_T_ESP_SPI_OFFSET 42
46#define ICE_IPV6_NAT_T_ESP_SPI_OFFSET 62
47
48#define ICE_FDIR_MAX_FLTRS 16384
49
50/* IP v4 has 2 flag bits that enable fragment processing: DF and MF. DF
51 * requests that the packet not be fragmented. MF indicates that a packet has
52 * been fragmented.
53 */
54#define ICE_FDIR_IPV4_PKT_FLAG_MF 0x20
55
56#define ICE_FDIR_NO_QUEUE_IDX -1
57
58enum ice_fltr_prgm_desc_dest {
59 ICE_FLTR_PRGM_DESC_DEST_DROP_PKT,
60 ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_QINDEX,
61 ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_QGROUP,
62 ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_OTHER,
63};
64
65enum ice_fltr_prgm_desc_fd_status {
66 ICE_FLTR_PRGM_DESC_FD_STATUS_NONE,
67 ICE_FLTR_PRGM_DESC_FD_STATUS_FD_ID,
68};
69
70/* Flow Director (FD) Filter Programming descriptor */
71struct ice_fd_fltr_desc_ctx {
72 u32 fdid;
73 u16 qindex;
74 u16 cnt_index;
75 u16 fd_vsi;
76 u16 flex_val;
77 u8 comp_q;
78 u8 comp_report;
79 u8 fd_space;
80 u8 cnt_ena;
81 u8 evict_ena;
82 u8 toq;
83 u8 toq_prio;
84 u8 dpu_recipe;
85 u8 drop;
86 u8 flex_prio;
87 u8 flex_mdid;
88 u8 dtype;
89 u8 pcmd;
90 u8 desc_prof_prio;
91 u8 desc_prof;
92 u8 swap;
93 u8 fdid_prio;
94 u8 fdid_mdid;
95};
96
97#define ICE_FLTR_PRGM_FLEX_WORD_SIZE sizeof(__be16)
98
99struct ice_rx_flow_userdef {
100 u16 flex_word;
101 u16 flex_offset;
102 u16 flex_fltr;
103};
104
105struct ice_fdir_v4 {
106 __be32 dst_ip;
107 __be32 src_ip;
108 __be16 dst_port;
109 __be16 src_port;
110 __be32 l4_header;
111 __be32 sec_parm_idx; /* security parameter index */
112 u8 tos;
113 u8 ip_ver;
114 u8 proto;
115 u8 ttl;
116};
117
118#define ICE_IPV6_ADDR_LEN_AS_U32 4
119
120struct ice_fdir_v6 {
121 __be32 dst_ip[ICE_IPV6_ADDR_LEN_AS_U32];
122 __be32 src_ip[ICE_IPV6_ADDR_LEN_AS_U32];
123 __be16 dst_port;
124 __be16 src_port;
125 __be32 l4_header; /* next header */
126 __be32 sec_parm_idx; /* security parameter index */
127 u8 tc;
128 u8 proto;
129 u8 hlim;
130};
131
132struct ice_fdir_udp_gtp {
133 u8 flags;
134 u8 msg_type;
135 __be16 rsrvd_len;
136 __be32 teid;
137 __be16 rsrvd_seq_nbr;
138 u8 rsrvd_n_pdu_nbr;
139 u8 rsrvd_next_ext_type;
140 u8 rsvrd_ext_len;
141 u8 pdu_type:4,
142 spare:4;
143 u8 ppp:1,
144 rqi:1,
145 qfi:6;
146 u32 rsvrd;
147 u8 next_ext;
148};
149
150struct ice_fdir_l2tpv3 {
151 __be32 session_id;
152};
153
154struct ice_fdir_extra {
155 u8 dst_mac[ETH_ALEN]; /* dest MAC address */
156 u8 src_mac[ETH_ALEN]; /* src MAC address */
157 __be16 ether_type; /* for NON_IP_L2 */
158 u32 usr_def[2]; /* user data */
159 __be16 vlan_type; /* VLAN ethertype */
160 __be16 vlan_tag; /* VLAN tag info */
161};
162
163struct ice_fdir_fltr {
164 struct list_head fltr_node;
165 enum ice_fltr_ptype flow_type;
166
167 struct ethhdr eth, eth_mask;
168
169 union {
170 struct ice_fdir_v4 v4;
171 struct ice_fdir_v6 v6;
172 } ip, mask;
173
174 struct ice_fdir_udp_gtp gtpu_data;
175 struct ice_fdir_udp_gtp gtpu_mask;
176
177 struct ice_fdir_l2tpv3 l2tpv3_data;
178 struct ice_fdir_l2tpv3 l2tpv3_mask;
179
180 struct ice_fdir_extra ext_data;
181 struct ice_fdir_extra ext_mask;
182
183 /* flex byte filter data */
184 __be16 flex_word;
185 /* queue region size (=2^q_region) */
186 u8 q_region;
187 u16 flex_offset;
188 u16 flex_fltr;
189
190 /* filter control */
191 s16 q_index;
192 u16 orig_q_index;
193 u16 dest_vsi;
194 u8 dest_ctl;
195 u8 cnt_ena;
196 u8 fltr_status;
197 u16 cnt_index;
198 u32 fltr_id;
199 u8 fdid_prio;
200 u8 comp_report;
201};
202
203/* Dummy packet filter definition structure */
204struct ice_fdir_base_pkt {
205 enum ice_fltr_ptype flow;
206 u16 pkt_len;
207 const u8 *pkt;
208 u16 tun_pkt_len;
209 const u8 *tun_pkt;
210};
211
212struct ice_vsi;
213
214int ice_alloc_fd_res_cntr(struct ice_hw *hw, u16 *cntr_id);
215int ice_free_fd_res_cntr(struct ice_hw *hw, u16 cntr_id);
216int ice_alloc_fd_guar_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
217int ice_alloc_fd_shrd_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
218void
219ice_fdir_get_prgm_desc(struct ice_hw *hw, struct ice_fdir_fltr *input,
220 struct ice_fltr_desc *fdesc, bool add);
221int
222ice_fdir_get_gen_prgm_pkt(struct ice_hw *hw, struct ice_fdir_fltr *input,
223 u8 *pkt, bool frag, bool tun);
224int ice_get_fdir_cnt_all(struct ice_hw *hw);
225int ice_fdir_num_avail_fltr(struct ice_hw *hw, struct ice_vsi *vsi);
226bool ice_fdir_is_dup_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
227bool ice_fdir_has_frag(enum ice_fltr_ptype flow);
228struct ice_fdir_fltr *
229ice_fdir_find_fltr_by_idx(struct ice_hw *hw, u32 fltr_idx);
230void
231ice_fdir_update_cntrs(struct ice_hw *hw, enum ice_fltr_ptype flow, bool add);
232void ice_fdir_list_add_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
233#endif /* _ICE_FDIR_H_ */