3e689141e6
Fix all selftests 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 not break the build, keep the old include path until everything has been
changed to the new one; a subsequent patch will remove that.
Fixes: 6910d7d3867a ("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: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/157952560568.1683545.9649335788846513446.stgit@toke.dk
86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <stddef.h>
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#include <string.h>
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#include <linux/bpf.h>
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#include <linux/ip.h>
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#include <linux/ipv6.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_endian.h>
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struct grehdr {
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__be16 flags;
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__be16 protocol;
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};
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SEC("encap_gre")
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int bpf_lwt_encap_gre(struct __sk_buff *skb)
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{
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struct encap_hdr {
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struct iphdr iph;
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struct grehdr greh;
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} hdr;
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int err;
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memset(&hdr, 0, sizeof(struct encap_hdr));
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hdr.iph.ihl = 5;
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hdr.iph.version = 4;
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hdr.iph.ttl = 0x40;
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hdr.iph.protocol = 47; /* IPPROTO_GRE */
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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hdr.iph.saddr = 0x640110ac; /* 172.16.1.100 */
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hdr.iph.daddr = 0x641010ac; /* 172.16.16.100 */
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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hdr.iph.saddr = 0xac100164; /* 172.16.1.100 */
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hdr.iph.daddr = 0xac101064; /* 172.16.16.100 */
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#else
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#error "Fix your compiler's __BYTE_ORDER__?!"
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#endif
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hdr.iph.tot_len = bpf_htons(skb->len + sizeof(struct encap_hdr));
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hdr.greh.protocol = skb->protocol;
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err = bpf_lwt_push_encap(skb, BPF_LWT_ENCAP_IP, &hdr,
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sizeof(struct encap_hdr));
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if (err)
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return BPF_DROP;
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return BPF_LWT_REROUTE;
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}
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SEC("encap_gre6")
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int bpf_lwt_encap_gre6(struct __sk_buff *skb)
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{
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struct encap_hdr {
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struct ipv6hdr ip6hdr;
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struct grehdr greh;
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} hdr;
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int err;
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memset(&hdr, 0, sizeof(struct encap_hdr));
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hdr.ip6hdr.version = 6;
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hdr.ip6hdr.payload_len = bpf_htons(skb->len + sizeof(struct grehdr));
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hdr.ip6hdr.nexthdr = 47; /* IPPROTO_GRE */
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hdr.ip6hdr.hop_limit = 0x40;
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/* fb01::1 */
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hdr.ip6hdr.saddr.s6_addr[0] = 0xfb;
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hdr.ip6hdr.saddr.s6_addr[1] = 1;
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hdr.ip6hdr.saddr.s6_addr[15] = 1;
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/* fb10::1 */
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hdr.ip6hdr.daddr.s6_addr[0] = 0xfb;
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hdr.ip6hdr.daddr.s6_addr[1] = 0x10;
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hdr.ip6hdr.daddr.s6_addr[15] = 1;
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hdr.greh.protocol = skb->protocol;
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err = bpf_lwt_push_encap(skb, BPF_LWT_ENCAP_IP, &hdr,
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sizeof(struct encap_hdr));
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if (err)
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return BPF_DROP;
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return BPF_LWT_REROUTE;
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}
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char _license[] SEC("license") = "GPL";
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