forked from Minki/linux
7cf245a37e
Fix all files in samples/bpf to include libbpf header files with the bpf/
prefix, to be consistent with external users of the library. Also ensure
that all includes of exported libbpf header files (those that are exported
on 'make install' of the library) use bracketed includes instead of quoted.
To make sure no new files are introduced that doesn't include the bpf/
prefix in its include, remove tools/lib/bpf from the include path entirely,
and use tools/lib instead.
Fixes: 6910d7d386 ("selftests/bpf: Ensure bpf_helper_defs.h are taken from selftests dir")
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157952560911.1683545.8795966751309534150.stgit@toke.dk
71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
/* Copyright (c) 2016 Facebook
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*/
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#define KBUILD_MODNAME "foo"
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#include <uapi/linux/if_ether.h>
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#include <uapi/linux/in6.h>
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#include <uapi/linux/ipv6.h>
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#include <uapi/linux/pkt_cls.h>
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#include <uapi/linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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/* copy of 'struct ethhdr' without __packed */
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struct eth_hdr {
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unsigned char h_dest[ETH_ALEN];
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unsigned char h_source[ETH_ALEN];
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unsigned short h_proto;
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};
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#define PIN_GLOBAL_NS 2
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struct bpf_elf_map {
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__u32 type;
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__u32 size_key;
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__u32 size_value;
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__u32 max_elem;
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__u32 flags;
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__u32 id;
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__u32 pinning;
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};
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struct bpf_elf_map SEC("maps") test_cgrp2_array_pin = {
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.type = BPF_MAP_TYPE_CGROUP_ARRAY,
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.size_key = sizeof(uint32_t),
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.size_value = sizeof(uint32_t),
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.pinning = PIN_GLOBAL_NS,
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.max_elem = 1,
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};
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SEC("filter")
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int handle_egress(struct __sk_buff *skb)
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{
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void *data = (void *)(long)skb->data;
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struct eth_hdr *eth = data;
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struct ipv6hdr *ip6h = data + sizeof(*eth);
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void *data_end = (void *)(long)skb->data_end;
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char dont_care_msg[] = "dont care %04x %d\n";
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char pass_msg[] = "pass\n";
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char reject_msg[] = "reject\n";
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/* single length check */
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if (data + sizeof(*eth) + sizeof(*ip6h) > data_end)
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return TC_ACT_OK;
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if (eth->h_proto != htons(ETH_P_IPV6) ||
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ip6h->nexthdr != IPPROTO_ICMPV6) {
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bpf_trace_printk(dont_care_msg, sizeof(dont_care_msg),
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eth->h_proto, ip6h->nexthdr);
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return TC_ACT_OK;
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} else if (bpf_skb_under_cgroup(skb, &test_cgrp2_array_pin, 0) != 1) {
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bpf_trace_printk(pass_msg, sizeof(pass_msg));
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return TC_ACT_OK;
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} else {
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bpf_trace_printk(reject_msg, sizeof(reject_msg));
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return TC_ACT_SHOT;
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}
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}
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char _license[] SEC("license") = "GPL";
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