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 | |