ceph/src/spdk/dpdk/drivers/net/sfc/sfc_flow.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright (c) 2017-2018 Solarflare Communications Inc.
   4  * All rights reserved.
   5  *
   6  * This software was jointly developed between OKTET Labs (under contract
   7  * for Solarflare) and Solarflare Communications, Inc.
   8  */
   9
  10 #ifndef _SFC_FLOW_H
  11 #define _SFC_FLOW_H
  12
  13 #include <rte_tailq.h>
  14 #include <rte_flow_driver.h>
  15
  16 #include "efx.h"
  17
  18 #ifdef __cplusplus
  19 extern "C" {
  20 #endif
  21
  22 /*
  23  * The maximum number of fully elaborated hardware filter specifications
  24  * which can be produced from a template by means of multiplication, if
  25  * missing match flags are needed to be taken into account
  26  */
  27 #define SF_FLOW_SPEC_NB_FILTERS_MAX 8
  28
  29 /* RSS configuration storage */
  30 struct sfc_flow_rss {
  31         unsigned int    rxq_hw_index_min;
  32         unsigned int    rxq_hw_index_max;
  33         unsigned int    rss_hash_types;
  34         uint8_t         rss_key[EFX_RSS_KEY_SIZE];
  35         unsigned int    rss_tbl[EFX_RSS_TBL_SIZE];
  36 };
  37
  38 /* Filter specification storage */
  39 struct sfc_flow_spec {
  40         /* partial specification from flow rule */
  41         efx_filter_spec_t template;
  42         /* fully elaborated hardware filters specifications */
  43         efx_filter_spec_t filters[SF_FLOW_SPEC_NB_FILTERS_MAX];
  44         /* number of complete specifications */
  45         unsigned int count;
  46 };
  47
  48 /* PMD-specific definition of the opaque type from rte_flow.h */
  49 struct rte_flow {
  50         struct sfc_flow_spec spec;      /* flow spec for hardware filter(s) */
  51         boolean_t rss;                  /* RSS toggle */
  52         struct sfc_flow_rss rss_conf;   /* RSS configuration */
  53         TAILQ_ENTRY(rte_flow) entries;  /* flow list entries */
  54 };
  55
  56 TAILQ_HEAD(sfc_flow_list, rte_flow);
  57
  58 extern const struct rte_flow_ops sfc_flow_ops;
  59
  60 struct sfc_adapter;
  61
  62 void sfc_flow_init(struct sfc_adapter *sa);
  63 void sfc_flow_fini(struct sfc_adapter *sa);
  64 int sfc_flow_start(struct sfc_adapter *sa);
  65 void sfc_flow_stop(struct sfc_adapter *sa);
  66
  67 #ifdef __cplusplus
  68 }
  69 #endif
  70 #endif /* _SFC_FLOW_H */