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