// SPDX-License-Identifier: GPL-2.0 #ifndef __NETCNT_COMMON_H #define __NETCNT_COMMON_H #include <linux/types.h> #define MAX_PERCPU_PACKETS 32 /* sizeof(struct bpf_local_storage_elem): * * It really is about 128 bytes on x86_64, but allocate more to account for * possible layout changes, different architectures, etc. * The kernel will wrap up to PAGE_SIZE internally anyway. */ #define SIZEOF_BPF_LOCAL_STORAGE_ELEM 256 /* Try to estimate kernel's BPF_LOCAL_STORAGE_MAX_VALUE_SIZE: */ #define BPF_LOCAL_STORAGE_MAX_VALUE_SIZE (0xFFFF - \ SIZEOF_BPF_LOCAL_STORAGE_ELEM) #define PCPU_MIN_UNIT_SIZE 32768 union percpu_net_cnt { struct { __u64 packets; __u64 bytes; __u64 prev_ts; __u64 prev_packets; __u64 prev_bytes; }; __u8 data[PCPU_MIN_UNIT_SIZE]; }; union net_cnt { struct { __u64 packets; __u64 bytes; }; __u8 data[BPF_LOCAL_STORAGE_MAX_VALUE_SIZE]; }; #endif