drivers/net/sfc/sfc_flow_tunnel.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright(c) 2021 Xilinx, Inc.
   4  */
   5
   6 #ifndef _SFC_FLOW_TUNNEL_H
   7 #define _SFC_FLOW_TUNNEL_H
   8
   9 #include <limits.h>
  10 #include <stdbool.h>
  11 #include <stdint.h>
  12
  13 #include <rte_flow.h>
  14
  15 #include "efx.h"
  16
  17 #ifdef __cplusplus
  18 extern "C" {
  19 #endif
  20
  21 /** Flow Tunnel (FT) SW entry ID */
  22 typedef uint8_t sfc_ft_ctx_id_t;
  23
  24 #define SFC_FT_CTX_MARK_BITS \
  25         (sizeof(sfc_ft_ctx_id_t) * CHAR_BIT)
  26
  27 #define SFC_FT_USER_MARK_BITS \
  28         (sizeof(uint32_t) * CHAR_BIT - SFC_FT_CTX_MARK_BITS)
  29
  30 #define SFC_FT_USER_MARK_MASK \
  31         RTE_LEN2MASK(SFC_FT_USER_MARK_BITS, uint32_t)
  32
  33 #define SFC_FT_FLOW_MARK_TO_CTX_MARK(_flow_mark) \
  34         ((_flow_mark) >> SFC_FT_USER_MARK_BITS)
  35
  36 #define SFC_FT_CTX_MARK_INVALID (0)
  37
  38 #define SFC_FT_CTX_MARK_TO_CTX_ID(_ctx_mark) \
  39         ((_ctx_mark) - 1)
  40
  41 #define SFC_FT_CTX_ID_TO_CTX_MARK(_ctx_id) \
  42         ((_ctx_id) + 1)
  43
  44 #define SFC_FT_CTX_ID_TO_FLOW_MARK(_ctx_id) \
  45         (SFC_FT_CTX_ID_TO_CTX_MARK(_ctx_id) << SFC_FT_USER_MARK_BITS)
  46
  47 #define SFC_FT_FLOW_MARK_TO_USER_MARK(_flow_mark) \
  48         ((_flow_mark) & SFC_FT_USER_MARK_MASK)
  49
  50 #define SFC_FT_MAX_NTUNNELS \
  51         (RTE_LEN2MASK(SFC_FT_CTX_MARK_BITS, uint8_t) - 1)
  52
  53 struct sfc_ft_ctx {
  54         bool                            tunnel_rule_is_set;
  55         efx_tunnel_protocol_t           encap_type;
  56         struct rte_flow_tunnel          tunnel;
  57         unsigned int                    refcnt;
  58         sfc_ft_ctx_id_t                 id;
  59
  60         struct rte_flow_action_mark     action_mark;
  61         struct rte_flow_action          action;
  62
  63         struct rte_flow_item_mark       item_mark_v;
  64         struct rte_flow_item_mark       item_mark_m;
  65         struct rte_flow_item            item;
  66
  67         uint64_t                        reset_tunnel_hit_counter;
  68         uint64_t                        switch_hit_counter;
  69 };
  70
  71 struct sfc_adapter;
  72
  73 bool sfc_ft_is_supported(struct sfc_adapter *sa);
  74
  75 bool sfc_ft_is_active(struct sfc_adapter *sa);
  76
  77 struct sfc_ft_ctx *sfc_ft_ctx_pick(struct sfc_adapter *sa, uint32_t flow_mark);
  78
  79 int sfc_ft_tunnel_rule_detect(struct sfc_adapter *sa,
  80                               const struct rte_flow_action *actions,
  81                               struct sfc_flow_spec_mae *spec,
  82                               struct rte_flow_error *error);
  83
  84 int sfc_ft_decap_set(struct rte_eth_dev *dev, struct rte_flow_tunnel *tunnel,
  85                      struct rte_flow_action **pmd_actions,
  86                      uint32_t *num_of_actions, struct rte_flow_error *err);
  87
  88 int sfc_ft_match(struct rte_eth_dev *dev, struct rte_flow_tunnel *tunnel,
  89                  struct rte_flow_item **pmd_items, uint32_t *num_of_items,
  90                  struct rte_flow_error *err);
  91
  92 int sfc_ft_item_release(struct rte_eth_dev *dev,
  93                         struct rte_flow_item *pmd_items, uint32_t num_items,
  94                         struct rte_flow_error *err);
  95
  96 int sfc_ft_action_decap_release(struct rte_eth_dev *dev,
  97                                 struct rte_flow_action *pmd_actions,
  98                                 uint32_t num_actions,
  99                                 struct rte_flow_error *err);
 100
 101 int sfc_ft_get_restore_info(struct rte_eth_dev *dev, struct rte_mbuf *m,
 102                             struct rte_flow_restore_info *info,
 103                             struct rte_flow_error *err);
 104
 105 void sfc_ft_counters_reset(struct sfc_adapter *sa);
 106
 107 #ifdef __cplusplus
 108 }
 109 #endif
 110 #endif /* _SFC_FLOW_TUNNEL_H */