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_ */