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_ */
224