From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- tools/testing/selftests/bpf/netcnt_common.h | 44 +++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 tools/testing/selftests/bpf/netcnt_common.h (limited to 'tools/testing/selftests/bpf/netcnt_common.h') diff --git a/tools/testing/selftests/bpf/netcnt_common.h b/tools/testing/selftests/bpf/netcnt_common.h new file mode 100644 index 000000000..0ab1c8804 --- /dev/null +++ b/tools/testing/selftests/bpf/netcnt_common.h @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: GPL-2.0 +#ifndef __NETCNT_COMMON_H +#define __NETCNT_COMMON_H + +#include + +#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 -- cgit v1.2.3