intel/ice/ice_fdir.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /* Copyright (C) 2018-2020, Intel Corporation. */
0003
0004 #ifndef _ICE_FDIR_H_
0005 #define _ICE_FDIR_H_
0006
0007 #define ICE_FDIR_TUN_PKT_OFF        50
0008 #define ICE_FDIR_MAX_RAW_PKT_SIZE   (512 + ICE_FDIR_TUN_PKT_OFF)
0009
0010 /* macros for offsets into packets for flow director programming */
0011 #define ICE_IPV4_SRC_ADDR_OFFSET    26
0012 #define ICE_IPV4_DST_ADDR_OFFSET    30
0013 #define ICE_IPV4_TCP_SRC_PORT_OFFSET    34
0014 #define ICE_IPV4_TCP_DST_PORT_OFFSET    36
0015 #define ICE_IPV4_UDP_SRC_PORT_OFFSET    34
0016 #define ICE_IPV4_UDP_DST_PORT_OFFSET    36
0017 #define ICE_IPV4_SCTP_SRC_PORT_OFFSET   34
0018 #define ICE_IPV4_SCTP_DST_PORT_OFFSET   36
0019 #define ICE_IPV4_PROTO_OFFSET       23
0020 #define ICE_IPV6_SRC_ADDR_OFFSET    22
0021 #define ICE_IPV6_DST_ADDR_OFFSET    38
0022 #define ICE_IPV6_TCP_SRC_PORT_OFFSET    54
0023 #define ICE_IPV6_TCP_DST_PORT_OFFSET    56
0024 #define ICE_IPV6_UDP_SRC_PORT_OFFSET    54
0025 #define ICE_IPV6_UDP_DST_PORT_OFFSET    56
0026 #define ICE_IPV6_SCTP_SRC_PORT_OFFSET   54
0027 #define ICE_IPV6_SCTP_DST_PORT_OFFSET   56
0028 #define ICE_MAC_ETHTYPE_OFFSET      12
0029 #define ICE_IPV4_TOS_OFFSET     15
0030 #define ICE_IPV4_TTL_OFFSET     22
0031 #define ICE_IPV6_TC_OFFSET      14
0032 #define ICE_IPV6_HLIM_OFFSET        21
0033 #define ICE_IPV6_PROTO_OFFSET       20
0034 #define ICE_IPV4_GTPU_TEID_OFFSET   46
0035 #define ICE_IPV4_GTPU_QFI_OFFSET    56
0036 #define ICE_IPV4_L2TPV3_SESS_ID_OFFSET  34
0037 #define ICE_IPV6_L2TPV3_SESS_ID_OFFSET  54
0038 #define ICE_IPV4_ESP_SPI_OFFSET     34
0039 #define ICE_IPV6_ESP_SPI_OFFSET     54
0040 #define ICE_IPV4_AH_SPI_OFFSET      38
0041 #define ICE_IPV6_AH_SPI_OFFSET      58
0042 #define ICE_IPV4_NAT_T_ESP_SPI_OFFSET   42
0043 #define ICE_IPV6_NAT_T_ESP_SPI_OFFSET   62
0044
0045 #define ICE_FDIR_MAX_FLTRS      16384
0046
0047 /* IP v4 has 2 flag bits that enable fragment processing: DF and MF. DF
0048  * requests that the packet not be fragmented. MF indicates that a packet has
0049  * been fragmented.
0050  */
0051 #define ICE_FDIR_IPV4_PKT_FLAG_MF       0x20
0052
0053 enum ice_fltr_prgm_desc_dest {
0054     ICE_FLTR_PRGM_DESC_DEST_DROP_PKT,
0055     ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_QINDEX,
0056     ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_QGROUP,
0057     ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_OTHER,
0058 };
0059
0060 enum ice_fltr_prgm_desc_fd_status {
0061     ICE_FLTR_PRGM_DESC_FD_STATUS_NONE,
0062     ICE_FLTR_PRGM_DESC_FD_STATUS_FD_ID,
0063 };
0064
0065 /* Flow Director (FD) Filter Programming descriptor */
0066 struct ice_fd_fltr_desc_ctx {
0067     u32 fdid;
0068     u16 qindex;
0069     u16 cnt_index;
0070     u16 fd_vsi;
0071     u16 flex_val;
0072     u8 comp_q;
0073     u8 comp_report;
0074     u8 fd_space;
0075     u8 cnt_ena;
0076     u8 evict_ena;
0077     u8 toq;
0078     u8 toq_prio;
0079     u8 dpu_recipe;
0080     u8 drop;
0081     u8 flex_prio;
0082     u8 flex_mdid;
0083     u8 dtype;
0084     u8 pcmd;
0085     u8 desc_prof_prio;
0086     u8 desc_prof;
0087     u8 swap;
0088     u8 fdid_prio;
0089     u8 fdid_mdid;
0090 };
0091
0092 #define ICE_FLTR_PRGM_FLEX_WORD_SIZE    sizeof(__be16)
0093
0094 struct ice_rx_flow_userdef {
0095     u16 flex_word;
0096     u16 flex_offset;
0097     u16 flex_fltr;
0098 };
0099
0100 struct ice_fdir_v4 {
0101     __be32 dst_ip;
0102     __be32 src_ip;
0103     __be16 dst_port;
0104     __be16 src_port;
0105     __be32 l4_header;
0106     __be32 sec_parm_idx;    /* security parameter index */
0107     u8 tos;
0108     u8 ip_ver;
0109     u8 proto;
0110     u8 ttl;
0111 };
0112
0113 #define ICE_IPV6_ADDR_LEN_AS_U32        4
0114
0115 struct ice_fdir_v6 {
0116     __be32 dst_ip[ICE_IPV6_ADDR_LEN_AS_U32];
0117     __be32 src_ip[ICE_IPV6_ADDR_LEN_AS_U32];
0118     __be16 dst_port;
0119     __be16 src_port;
0120     __be32 l4_header; /* next header */
0121     __be32 sec_parm_idx; /* security parameter index */
0122     u8 tc;
0123     u8 proto;
0124     u8 hlim;
0125 };
0126
0127 struct ice_fdir_udp_gtp {
0128     u8 flags;
0129     u8 msg_type;
0130     __be16 rsrvd_len;
0131     __be32 teid;
0132     __be16 rsrvd_seq_nbr;
0133     u8 rsrvd_n_pdu_nbr;
0134     u8 rsrvd_next_ext_type;
0135     u8 rsvrd_ext_len;
0136     u8  pdu_type:4,
0137         spare:4;
0138     u8  ppp:1,
0139         rqi:1,
0140         qfi:6;
0141     u32 rsvrd;
0142     u8 next_ext;
0143 };
0144
0145 struct ice_fdir_l2tpv3 {
0146     __be32 session_id;
0147 };
0148
0149 struct ice_fdir_extra {
0150     u8 dst_mac[ETH_ALEN];   /* dest MAC address */
0151     u8 src_mac[ETH_ALEN];   /* src MAC address */
0152     __be16 ether_type;  /* for NON_IP_L2 */
0153     u32 usr_def[2];     /* user data */
0154     __be16 vlan_type;   /* VLAN ethertype */
0155     __be16 vlan_tag;    /* VLAN tag info */
0156 };
0157
0158 struct ice_fdir_fltr {
0159     struct list_head fltr_node;
0160     enum ice_fltr_ptype flow_type;
0161
0162     union {
0163         struct ice_fdir_v4 v4;
0164         struct ice_fdir_v6 v6;
0165     } ip, mask;
0166
0167     struct ice_fdir_udp_gtp gtpu_data;
0168     struct ice_fdir_udp_gtp gtpu_mask;
0169
0170     struct ice_fdir_l2tpv3 l2tpv3_data;
0171     struct ice_fdir_l2tpv3 l2tpv3_mask;
0172
0173     struct ice_fdir_extra ext_data;
0174     struct ice_fdir_extra ext_mask;
0175
0176     /* flex byte filter data */
0177     __be16 flex_word;
0178     /* queue region size (=2^q_region) */
0179     u8 q_region;
0180     u16 flex_offset;
0181     u16 flex_fltr;
0182
0183     /* filter control */
0184     u16 q_index;
0185     u16 orig_q_index;
0186     u16 dest_vsi;
0187     u8 dest_ctl;
0188     u8 cnt_ena;
0189     u8 fltr_status;
0190     u16 cnt_index;
0191     u32 fltr_id;
0192     u8 fdid_prio;
0193     u8 comp_report;
0194 };
0195
0196 /* Dummy packet filter definition structure */
0197 struct ice_fdir_base_pkt {
0198     enum ice_fltr_ptype flow;
0199     u16 pkt_len;
0200     const u8 *pkt;
0201     u16 tun_pkt_len;
0202     const u8 *tun_pkt;
0203 };
0204
0205 int ice_alloc_fd_res_cntr(struct ice_hw *hw, u16 *cntr_id);
0206 int ice_free_fd_res_cntr(struct ice_hw *hw, u16 cntr_id);
0207 int ice_alloc_fd_guar_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
0208 int ice_alloc_fd_shrd_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
0209 void
0210 ice_fdir_get_prgm_desc(struct ice_hw *hw, struct ice_fdir_fltr *input,
0211                struct ice_fltr_desc *fdesc, bool add);
0212 int
0213 ice_fdir_get_gen_prgm_pkt(struct ice_hw *hw, struct ice_fdir_fltr *input,
0214               u8 *pkt, bool frag, bool tun);
0215 int ice_get_fdir_cnt_all(struct ice_hw *hw);
0216 bool ice_fdir_is_dup_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
0217 bool ice_fdir_has_frag(enum ice_fltr_ptype flow);
0218 struct ice_fdir_fltr *
0219 ice_fdir_find_fltr_by_idx(struct ice_hw *hw, u32 fltr_idx);
0220 void
0221 ice_fdir_update_cntrs(struct ice_hw *hw, enum ice_fltr_ptype flow, bool add);
0222 void ice_fdir_list_add_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
0223 #endif /* _ICE_FDIR_H_ */