linux/drivers/net/ethernet/intel/ice/ice_fdir.h
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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_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_DF               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 dest_vsi;
 186        u8 dest_ctl;
 187        u8 cnt_ena;
 188        u8 fltr_status;
 189        u16 cnt_index;
 190        u32 fltr_id;
 191        u8 fdid_prio;
 192        u8 comp_report;
 193};
 194
 195/* Dummy packet filter definition structure */
 196struct ice_fdir_base_pkt {
 197        enum ice_fltr_ptype flow;
 198        u16 pkt_len;
 199        const u8 *pkt;
 200        u16 tun_pkt_len;
 201        const u8 *tun_pkt;
 202};
 203
 204enum ice_status ice_alloc_fd_res_cntr(struct ice_hw *hw, u16 *cntr_id);
 205enum ice_status ice_free_fd_res_cntr(struct ice_hw *hw, u16 cntr_id);
 206enum ice_status
 207ice_alloc_fd_guar_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
 208enum ice_status
 209ice_alloc_fd_shrd_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
 210void
 211ice_fdir_get_prgm_desc(struct ice_hw *hw, struct ice_fdir_fltr *input,
 212                       struct ice_fltr_desc *fdesc, bool add);
 213enum ice_status
 214ice_fdir_get_gen_prgm_pkt(struct ice_hw *hw, struct ice_fdir_fltr *input,
 215                          u8 *pkt, bool frag, bool tun);
 216int ice_get_fdir_cnt_all(struct ice_hw *hw);
 217bool ice_fdir_is_dup_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
 218bool ice_fdir_has_frag(enum ice_fltr_ptype flow);
 219struct ice_fdir_fltr *
 220ice_fdir_find_fltr_by_idx(struct ice_hw *hw, u32 fltr_idx);
 221void
 222ice_fdir_update_cntrs(struct ice_hw *hw, enum ice_fltr_ptype flow, bool add);
 223void ice_fdir_list_add_fltr(struct ice_hw *hw, struct ice_fdir_fltr *input);
 224#endif /* _ICE_FDIR_H_ */
 225