drivers/net/sfc/sfc_flow_rss.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright(c) 2022 Xilinx, Inc.
   4  */
   5
   6 #ifndef _SFC_FLOW_RSS_H
   7 #define _SFC_FLOW_RSS_H
   8
   9 #include <stdbool.h>
  10 #include <stdint.h>
  11
  12 #include <rte_flow.h>
  13 #include <rte_tailq.h>
  14
  15 #include "efx.h"
  16
  17 #ifdef __cplusplus
  18 extern "C" {
  19 #endif
  20
  21 struct sfc_flow_rss_conf {
  22         uint8_t                         key[EFX_RSS_KEY_SIZE];
  23         efx_rx_hash_type_t              efx_hash_types;
  24         unsigned int                    nb_qid_offsets;
  25         unsigned int                    qid_span;
  26 };
  27
  28 struct sfc_flow_rss_ctx {
  29         TAILQ_ENTRY(sfc_flow_rss_ctx)   entries;
  30
  31         unsigned int                    refcnt;
  32         bool                            dummy;
  33
  34         unsigned int                    nic_handle_refcnt;
  35         uint32_t                        nic_handle;
  36
  37         struct sfc_flow_rss_conf        conf;
  38
  39         uint16_t                        *qid_offsets;
  40 };
  41
  42 TAILQ_HEAD(sfc_flow_rss_ctx_list, sfc_flow_rss_ctx);
  43
  44 struct sfc_flow_rss {
  45         unsigned int                    nb_tbl_entries_min;
  46         unsigned int                    nb_tbl_entries_max;
  47         unsigned int                    qid_span_max;
  48
  49         unsigned int                    *bounce_tbl; /* MAX */
  50
  51         struct sfc_flow_rss_ctx_list    ctx_list;
  52 };
  53
  54 struct sfc_adapter;
  55
  56 int sfc_flow_rss_attach(struct sfc_adapter *sa);
  57
  58 void sfc_flow_rss_detach(struct sfc_adapter *sa);
  59
  60 int sfc_flow_rss_parse_conf(struct sfc_adapter *sa,
  61                             const struct rte_flow_action_rss *in,
  62                             struct sfc_flow_rss_conf *out,
  63                             uint16_t *sw_qid_minp);
  64
  65 struct sfc_flow_rss_ctx *sfc_flow_rss_ctx_reuse(struct sfc_adapter *sa,
  66                                 const struct sfc_flow_rss_conf *conf,
  67                                 uint16_t sw_qid_min, const uint16_t *sw_qids);
  68
  69 int sfc_flow_rss_ctx_add(struct sfc_adapter *sa,
  70                          const struct sfc_flow_rss_conf *conf,
  71                          uint16_t sw_qid_min, const uint16_t *sw_qids,
  72                          struct sfc_flow_rss_ctx **ctxp);
  73
  74 void sfc_flow_rss_ctx_del(struct sfc_adapter *sa, struct sfc_flow_rss_ctx *ctx);
  75
  76 int sfc_flow_rss_ctx_program(struct sfc_adapter *sa,
  77                              struct sfc_flow_rss_ctx *ctx);
  78
  79 void sfc_flow_rss_ctx_terminate(struct sfc_adapter *sa,
  80                                 struct sfc_flow_rss_ctx *ctx);
  81
  82 #ifdef __cplusplus
  83 }
  84 #endif
  85 #endif /* _SFC_FLOW_RSS_H */