Release 4.10 samples/bpf/sampleip_kern.c
/* Copyright 2016 Netflix, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*/
#include <linux/version.h>
#include <linux/ptrace.h>
#include <uapi/linux/bpf.h>
#include <uapi/linux/bpf_perf_event.h>
#include "bpf_helpers.h"
#define MAX_IPS 8192
struct bpf_map_def SEC("maps") ip_map = {
.type = BPF_MAP_TYPE_HASH,
.key_size = sizeof(u64),
.value_size = sizeof(u32),
.max_entries = MAX_IPS,
};
SEC("perf_event")
int do_sample(struct bpf_perf_event_data *ctx)
{
u64 ip;
u32 *value, init_val = 1;
ip = PT_REGS_IP(&ctx->regs);
value = bpf_map_lookup_elem(&ip_map, &ip);
if (value)
*value += 1;
else
/* E2BIG not tested for this example only */
bpf_map_update_elem(&ip_map, &ip, &init_val, BPF_NOEXIST);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| brendan gregg | brendan gregg | 66 | 94.29% | 1 | 50.00% |
| michael holzheu | michael holzheu | 4 | 5.71% | 1 | 50.00% |
| Total | 70 | 100.00% | 2 | 100.00% |
char _license[] SEC("license") = "GPL";
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| brendan gregg | brendan gregg | 136 | 97.14% | 1 | 50.00% |
| michael holzheu | michael holzheu | 4 | 2.86% | 1 | 50.00% |
| Total | 140 | 100.00% | 2 | 100.00% |
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