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         enum rte_eth_hash_function      rte_hash_function;
  24         efx_rx_hash_type_t              efx_hash_types;
  25         unsigned int                    nb_qid_offsets;
  26         unsigned int                    qid_span;
  27 };
  28
  29 struct sfc_flow_rss_ctx {
  30         TAILQ_ENTRY(sfc_flow_rss_ctx)   entries;
  31
  32         unsigned int                    refcnt;
  33         bool                            dummy;
  34
  35         unsigned int                    nic_handle_refcnt;
  36         uint32_t                        nic_handle;
  37
  38         struct sfc_flow_rss_conf        conf;
  39
  40         uint16_t                        *qid_offsets;
  41 };
  42
  43 TAILQ_HEAD(sfc_flow_rss_ctx_list, sfc_flow_rss_ctx);
  44
  45 struct sfc_flow_rss {
  46         unsigned int                    nb_tbl_entries_min;
  47         unsigned int                    nb_tbl_entries_max;
  48         unsigned int                    qid_span_max;
  49
  50         unsigned int                    *bounce_tbl; /* MAX */
  51
  52         struct sfc_flow_rss_ctx_list    ctx_list;
  53 };
  54
  55 struct sfc_adapter;
  56
  57 int sfc_flow_rss_attach(struct sfc_adapter *sa);
  58
  59 void sfc_flow_rss_detach(struct sfc_adapter *sa);
  60
  61 int sfc_flow_rss_parse_conf(struct sfc_adapter *sa,
  62                             const struct rte_flow_action_rss *in,
  63                             struct sfc_flow_rss_conf *out,
  64                             uint16_t *sw_qid_minp);
  65
  66 struct sfc_flow_rss_ctx *sfc_flow_rss_ctx_reuse(struct sfc_adapter *sa,
  67                                 const struct sfc_flow_rss_conf *conf,
  68                                 uint16_t sw_qid_min, const uint16_t *sw_qids);
  69
  70 int sfc_flow_rss_ctx_add(struct sfc_adapter *sa,
  71                          const struct sfc_flow_rss_conf *conf,
  72                          uint16_t sw_qid_min, const uint16_t *sw_qids,
  73                          struct sfc_flow_rss_ctx **ctxp);
  74
  75 void sfc_flow_rss_ctx_del(struct sfc_adapter *sa, struct sfc_flow_rss_ctx *ctx);
  76
  77 int sfc_flow_rss_ctx_program(struct sfc_adapter *sa,
  78                              struct sfc_flow_rss_ctx *ctx);
  79
  80 void sfc_flow_rss_ctx_terminate(struct sfc_adapter *sa,
  81                                 struct sfc_flow_rss_ctx *ctx);
  82
  83 #ifdef __cplusplus
  84 }
  85 #endif
  86 #endif /* _SFC_FLOW_RSS_H */