Release 4.8 net/netfilter/xt_bpf.c
/* Xtables module to match packets using a BPF filter.
* Copyright 2013 Google Inc.
* Written by Willem de Bruijn <willemb@google.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/filter.h>
#include <linux/netfilter/xt_bpf.h>
#include <linux/netfilter/x_tables.h>
MODULE_AUTHOR("Willem de Bruijn <willemb@google.com>");
MODULE_DESCRIPTION("Xtables: BPF filter match");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ipt_bpf");
MODULE_ALIAS("ip6t_bpf");
static int bpf_mt_check(const struct xt_mtchk_param *par)
{
struct xt_bpf_info *info = par->matchinfo;
struct sock_fprog_kern program;
program.len = info->bpf_program_num_elem;
program.filter = info->bpf_program;
if (bpf_prog_create(&info->filter, &program)) {
pr_info("bpf: check failed: parse error\n");
return -EINVAL;
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| willem de bruijn | willem de bruijn | 66 | 97.06% | 1 | 33.33% |
| alexei starovoitov | alexei starovoitov | 1 | 1.47% | 1 | 33.33% |
| daniel borkmann | daniel borkmann | 1 | 1.47% | 1 | 33.33% |
| Total | 68 | 100.00% | 3 | 100.00% |
static bool bpf_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct xt_bpf_info *info = par->matchinfo;
return BPF_PROG_RUN(info->filter, skb);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| willem de bruijn | willem de bruijn | 36 | 97.30% | 1 | 50.00% |
| alexei starovoitov | alexei starovoitov | 1 | 2.70% | 1 | 50.00% |
| Total | 37 | 100.00% | 2 | 100.00% |
static void bpf_mt_destroy(const struct xt_mtdtor_param *par)
{
const struct xt_bpf_info *info = par->matchinfo;
bpf_prog_destroy(info->filter);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| willem de bruijn | willem de bruijn | 28 | 96.55% | 1 | 50.00% |
| alexei starovoitov | alexei starovoitov | 1 | 3.45% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
static struct xt_match bpf_mt_reg __read_mostly = {
.name = "bpf",
.revision = 0,
.family = NFPROTO_UNSPEC,
.checkentry = bpf_mt_check,
.match = bpf_mt,
.destroy = bpf_mt_destroy,
.matchsize = sizeof(struct xt_bpf_info),
.me = THIS_MODULE,
};
static int __init bpf_mt_init(void)
{
return xt_register_match(&bpf_mt_reg);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| willem de bruijn | willem de bruijn | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
static void __exit bpf_mt_exit(void)
{
xt_unregister_match(&bpf_mt_reg);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| willem de bruijn | willem de bruijn | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
module_init(bpf_mt_init);
module_exit(bpf_mt_exit);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| willem de bruijn | willem de bruijn | 264 | 98.51% | 1 | 33.33% |
| alexei starovoitov | alexei starovoitov | 3 | 1.12% | 1 | 33.33% |
| daniel borkmann | daniel borkmann | 1 | 0.37% | 1 | 33.33% |
| Total | 268 | 100.00% | 3 | 100.00% |
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