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/* IP v4 has 2 flag bits that enable fragment processing: DF and MF. DF
 29 * requests that the packet not be fragmented. MF indicates that a packet has
 30 * been fragmented.
 31 */
 32#define ICE_FDIR_IPV4_PKT_FLAG_DF		0x20
 33
 34enum ice_fltr_prgm_desc_dest {
 35	ICE_FLTR_PRGM_DESC_DEST_DROP_PKT,
 36	ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_QINDEX,
 37};
 38
 39enum ice_fltr_prgm_desc_fd_status {
 40	ICE_FLTR_PRGM_DESC_FD_STATUS_NONE,
 41	ICE_FLTR_PRGM_DESC_FD_STATUS_FD_ID,
 42};
 43
 44/* Flow Director (FD) Filter Programming descriptor */
 45struct ice_fd_fltr_desc_ctx {
 46	u32 fdid;
 47	u16 qindex;
 48	u16 cnt_index;
 49	u16 fd_vsi;
 50	u16 flex_val;
 51	u8 comp_q;
 52	u8 comp_report;
 53	u8 fd_space;
 54	u8 cnt_ena;
 55	u8 evict_ena;
 56	u8 toq;
 57	u8 toq_prio;
 58	u8 dpu_recipe;
 59	u8 drop;
 60	u8 flex_prio;
 61	u8 flex_mdid;
 62	u8 dtype;
 63	u8 pcmd;
 64	u8 desc_prof_prio;
 65	u8 desc_prof;
 66	u8 swap;
 67	u8 fdid_prio;
 68	u8 fdid_mdid;
 69};
 70
 71#define ICE_FLTR_PRGM_FLEX_WORD_SIZE	sizeof(__be16)
 72
 73struct ice_rx_flow_userdef {
 74	u16 flex_word;
 75	u16 flex_offset;
 76	u16 flex_fltr;
 77};
 78
 79struct ice_fdir_v4 {
 80	__be32 dst_ip;
 81	__be32 src_ip;
 82	__be16 dst_port;
 83	__be16 src_port;
 84	__be32 l4_header;
 85	__be32 sec_parm_idx;	/* security parameter index */
 86	u8 tos;
 87	u8 ip_ver;
 88	u8 proto;
 89};
 90
 91#define ICE_IPV6_ADDR_LEN_AS_U32		4
 92
 93struct ice_fdir_v6 {
 94	__be32 dst_ip[ICE_IPV6_ADDR_LEN_AS_U32];
 95	__be32 src_ip[ICE_IPV6_ADDR_LEN_AS_U32];
 96	__be16 dst_port;
 97	__be16 src_port;
 98	__be32 l4_header; /* next header */
 99	__be32 sec_parm_idx; /* security parameter index */
100	u8 tc;
101	u8 proto;
102};
103
104struct ice_fdir_extra {
105	u8 dst_mac[ETH_ALEN];	/* dest MAC address */
106	u32 usr_def[2];		/* user data */
107	__be16 vlan_type;	/* VLAN ethertype */
108	__be16 vlan_tag;	/* VLAN tag info */
109};
110
111struct ice_fdir_fltr {
112	struct list_head fltr_node;
113	enum ice_fltr_ptype flow_type;
114
115	union {
116		struct ice_fdir_v4 v4;
117		struct ice_fdir_v6 v6;
118	} ip, mask;
119
120	struct ice_fdir_extra ext_data;
121	struct ice_fdir_extra ext_mask;
122
123	/* flex byte filter data */
124	__be16 flex_word;
125	u16 flex_offset;
126	u16 flex_fltr;
127
128	/* filter control */
129	u16 q_index;
130	u16 dest_vsi;
131	u8 dest_ctl;
132	u8 fltr_status;
133	u16 cnt_index;
134	u32 fltr_id;
135};
136
137/* Dummy packet filter definition structure */
138struct ice_fdir_base_pkt {
139	enum ice_fltr_ptype flow;
140	u16 pkt_len;
141	const u8 *pkt;
142	u16 tun_pkt_len;
143	const u8 *tun_pkt;
144};
145
146enum ice_status ice_alloc_fd_res_cntr(struct ice_hw *hw, u16 *cntr_id);
147enum ice_status ice_free_fd_res_cntr(struct ice_hw *hw, u16 cntr_id);
148enum ice_status
149ice_alloc_fd_guar_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
150enum ice_status
151ice_alloc_fd_shrd_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
152void
153ice_fdir_get_prgm_desc(struct ice_hw *hw, struct ice_fdir_fltr *input,
154		       struct ice_fltr_desc *fdesc, bool add);
155enum ice_status
156ice_fdir_get_gen_prgm_pkt(struct ice_hw *hw, struct ice_fdir_fltr *input,
157			  u8 *pkt, bool frag, bool tun);
158int ice_get_fdir_cnt_all(struct ice_hw *hw);
159bool ice_fdir_is_dup_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
160bool ice_fdir_has_frag(enum ice_fltr_ptype flow);
161struct ice_fdir_fltr *
162ice_fdir_find_fltr_by_idx(struct ice_hw *hw, u32 fltr_idx);
163void
164ice_fdir_update_cntrs(struct ice_hw *hw, enum ice_fltr_ptype flow, bool add);
165void ice_fdir_list_add_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
166#endif /* _ICE_FDIR_H_ */