LXR dpdk/drivers/net/sfc/sfc_flow

   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
  18extern "C" {
  19#endif
  20
  21struct 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
  29struct 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
  43TAILQ_HEAD(sfc_flow_rss_ctx_list, sfc_flow_rss_ctx);
  44
  45struct 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
  55struct sfc_adapter;
  56
  57int sfc_flow_rss_attach(struct sfc_adapter *sa);
  58
  59void sfc_flow_rss_detach(struct sfc_adapter *sa);
  60
  61int 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
  66struct 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
  70int 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
  75void sfc_flow_rss_ctx_del(struct sfc_adapter *sa, struct sfc_flow_rss_ctx *ctx);
  76
  77int sfc_flow_rss_ctx_program(struct sfc_adapter *sa,
  78                             struct sfc_flow_rss_ctx *ctx);
  79
  80void 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 */
  87