60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/****************************************************************************
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* Driver for Solarflare network controllers and boards
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* Copyright 2022 Advanced Micro Devices, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation, incorporated herein by reference.
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*/
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#ifndef EFX_TC_COUNTERS_H
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#define EFX_TC_COUNTERS_H
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#include <linux/refcount.h>
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#include "net_driver.h"
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#include "mcdi_pcol.h" /* for MAE_COUNTER_TYPE_* */
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enum efx_tc_counter_type {
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EFX_TC_COUNTER_TYPE_AR = MAE_COUNTER_TYPE_AR,
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EFX_TC_COUNTER_TYPE_CT = MAE_COUNTER_TYPE_CT,
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EFX_TC_COUNTER_TYPE_OR = MAE_COUNTER_TYPE_OR,
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EFX_TC_COUNTER_TYPE_MAX
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};
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struct efx_tc_counter {
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u32 fw_id; /* index in firmware counter table */
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enum efx_tc_counter_type type;
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struct rhash_head linkage; /* efx->tc->counter_ht */
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spinlock_t lock; /* Serialises updates to counter values */
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u32 gen; /* Generation count at which this counter is current */
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u64 packets, bytes;
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u64 old_packets, old_bytes; /* Values last time passed to userspace */
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/* jiffies of the last time we saw packets increase */
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unsigned long touched;
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};
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struct efx_tc_counter_index {
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unsigned long cookie;
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struct rhash_head linkage; /* efx->tc->counter_id_ht */
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refcount_t ref;
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struct efx_tc_counter *cnt;
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};
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/* create/uncreate/teardown hashtables */
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int efx_tc_init_counters(struct efx_nic *efx);
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void efx_tc_destroy_counters(struct efx_nic *efx);
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void efx_tc_fini_counters(struct efx_nic *efx);
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struct efx_tc_counter_index *efx_tc_flower_get_counter_index(
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struct efx_nic *efx, unsigned long cookie,
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enum efx_tc_counter_type type);
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void efx_tc_flower_put_counter_index(struct efx_nic *efx,
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struct efx_tc_counter_index *ctr);
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struct efx_tc_counter_index *efx_tc_flower_find_counter_index(
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struct efx_nic *efx, unsigned long cookie);
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extern const struct efx_channel_type efx_tc_channel_type;
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#endif /* EFX_TC_COUNTERS_H */
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