drivers/net/ethernet/sfc/tc_counters.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /****************************************************************************
   3  * Driver for Solarflare network controllers and boards
   4  * Copyright 2022 Advanced Micro Devices, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published
   8  * by the Free Software Foundation, incorporated herein by reference.
   9  */
  10
  11 #ifndef EFX_TC_COUNTERS_H
  12 #define EFX_TC_COUNTERS_H
  13 #include <linux/refcount.h>
  14 #include "net_driver.h"
  15
  16 #include "mcdi_pcol.h" /* for MAE_COUNTER_TYPE_* */
  17
  18 enum efx_tc_counter_type {
  19         EFX_TC_COUNTER_TYPE_AR = MAE_COUNTER_TYPE_AR,
  20         EFX_TC_COUNTER_TYPE_CT = MAE_COUNTER_TYPE_CT,
  21         EFX_TC_COUNTER_TYPE_OR = MAE_COUNTER_TYPE_OR,
  22         EFX_TC_COUNTER_TYPE_MAX
  23 };
  24
  25 struct efx_tc_counter {
  26         u32 fw_id; /* index in firmware counter table */
  27         enum efx_tc_counter_type type;
  28         struct rhash_head linkage; /* efx->tc->counter_ht */
  29         spinlock_t lock; /* Serialises updates to counter values */
  30         u32 gen; /* Generation count at which this counter is current */
  31         u64 packets, bytes;
  32         u64 old_packets, old_bytes; /* Values last time passed to userspace */
  33         /* jiffies of the last time we saw packets increase */
  34         unsigned long touched;
  35         struct work_struct work; /* For notifying encap actions */
  36         /* owners of corresponding count actions */
  37         struct list_head users;
  38 };
  39
  40 struct efx_tc_counter_index {
  41         unsigned long cookie;
  42         struct rhash_head linkage; /* efx->tc->counter_id_ht */
  43         refcount_t ref;
  44         struct efx_tc_counter *cnt;
  45 };
  46
  47 /* create/uncreate/teardown hashtables */
  48 int efx_tc_init_counters(struct efx_nic *efx);
  49 void efx_tc_destroy_counters(struct efx_nic *efx);
  50 void efx_tc_fini_counters(struct efx_nic *efx);
  51
  52 struct efx_tc_counter *efx_tc_flower_allocate_counter(struct efx_nic *efx,
  53                                                       int type);
  54 void efx_tc_flower_release_counter(struct efx_nic *efx,
  55                                    struct efx_tc_counter *cnt);
  56 struct efx_tc_counter_index *efx_tc_flower_get_counter_index(
  57                                 struct efx_nic *efx, unsigned long cookie,
  58                                 enum efx_tc_counter_type type);
  59 void efx_tc_flower_put_counter_index(struct efx_nic *efx,
  60                                      struct efx_tc_counter_index *ctr);
  61 struct efx_tc_counter_index *efx_tc_flower_find_counter_index(
  62                                 struct efx_nic *efx, unsigned long cookie);
  63
  64 extern const struct efx_channel_type efx_tc_channel_type;
  65
  66 #endif /* EFX_TC_COUNTERS_H */