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 */ 67