LXR linux/drivers/net/ethernet/intel/ice/ice

   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_ */
 167