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 "efx.h"
  14
  15 #ifdef __cplusplus
  16 extern "C" {
  17 #endif
  18
  19 /** Flow Tunnel (FT) SW entry ID */
  20 typedef uint8_t sfc_ft_id_t;
  21
  22 #define SFC_FT_TUNNEL_MARK_BITS \
  23         (sizeof(sfc_ft_id_t) * CHAR_BIT)
  24
  25 #define SFC_FT_USER_MARK_BITS \
  26         (sizeof(uint32_t) * CHAR_BIT - SFC_FT_TUNNEL_MARK_BITS)
  27
  28 #define SFC_FT_USER_MARK_MASK \
  29         RTE_LEN2MASK(SFC_FT_USER_MARK_BITS, uint32_t)
  30
  31 #define SFC_FT_GET_TUNNEL_MARK(_mark) \
  32         ((_mark) >> SFC_FT_USER_MARK_BITS)
  33
  34 #define SFC_FT_TUNNEL_MARK_INVALID      (0)
  35
  36 #define SFC_FT_TUNNEL_MARK_TO_ID(_tunnel_mark) \
  37         ((_tunnel_mark) - 1)
  38
  39 #define SFC_FT_ID_TO_TUNNEL_MARK(_id) \
  40         ((_id) + 1)
  41
  42 #define SFC_FT_MAX_NTUNNELS \
  43         (RTE_LEN2MASK(SFC_FT_TUNNEL_MARK_BITS, uint8_t) - 1)
  44
  45 struct sfc_flow_tunnel {
  46         bool                            jump_rule_is_set;
  47         efx_tunnel_protocol_t           encap_type;
  48         unsigned int                    refcnt;
  49         sfc_ft_id_t                     id;
  50 };
  51
  52 struct sfc_adapter;
  53
  54 bool sfc_flow_tunnel_is_supported(struct sfc_adapter *sa);
  55
  56 bool sfc_flow_tunnel_is_active(struct sfc_adapter *sa);
  57
  58 struct sfc_flow_tunnel *sfc_flow_tunnel_pick(struct sfc_adapter *sa,
  59                                              uint32_t ft_mark);
  60
  61 int sfc_flow_tunnel_detect_jump_rule(struct sfc_adapter *sa,
  62                                      const struct rte_flow_action *actions,
  63                                      struct sfc_flow_spec_mae *spec,
  64                                      struct rte_flow_error *error);
  65
  66 #ifdef __cplusplus
  67 }
  68 #endif
  69 #endif /* _SFC_FLOW_TUNNEL_H */