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| author | Christian Poessinger <christian@poessinger.com> | 2020-12-18 17:13:13 +0100 |
|---|---|---|
| committer | Christian Poessinger <christian@poessinger.com> | 2020-12-19 21:56:19 +0100 |
| commit | b5c80d310527223b93e4133ac2f4c8c063c70a98 (patch) | |
| tree | 48ae9e2752b4b94c07f767a019c99a8c2460c014 /src/xdp/include/bpf_legacy.h | |
| parent | 22308b05dfbcd8da0230bbd8ba3bbc2a55da7786 (diff) | |
| download | vyos-1x-b5c80d310527223b93e4133ac2f4c8c063c70a98.tar.gz vyos-1x-b5c80d310527223b93e4133ac2f4c8c063c70a98.zip | |
xdp: T2666: switch to example code provided by xdp-tutorial
Diffstat (limited to 'src/xdp/include/bpf_legacy.h')
| -rw-r--r-- | src/xdp/include/bpf_legacy.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/xdp/include/bpf_legacy.h b/src/xdp/include/bpf_legacy.h new file mode 100644 index 000000000..8dfa168cd --- /dev/null +++ b/src/xdp/include/bpf_legacy.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */ +#ifndef __BPF_LEGACY__ +#define __BPF_LEGACY__ + +/* + * legacy bpf_map_def with extra fields supported only by bpf_load(), do not + * use outside of samples/bpf + */ +struct bpf_map_def_legacy { + unsigned int type; + unsigned int key_size; + unsigned int value_size; + unsigned int max_entries; + unsigned int map_flags; + unsigned int inner_map_idx; + unsigned int numa_node; +}; + +#define BPF_ANNOTATE_KV_PAIR(name, type_key, type_val) \ + struct ____btf_map_##name { \ + type_key key; \ + type_val value; \ + }; \ + struct ____btf_map_##name \ + __attribute__ ((section(".maps." #name), used)) \ + ____btf_map_##name = { } + +/* llvm builtin functions that eBPF C program may use to + * emit BPF_LD_ABS and BPF_LD_IND instructions + */ +unsigned long long load_byte(void *skb, + unsigned long long off) asm("llvm.bpf.load.byte"); +unsigned long long load_half(void *skb, + unsigned long long off) asm("llvm.bpf.load.half"); +unsigned long long load_word(void *skb, + unsigned long long off) asm("llvm.bpf.load.word"); + +#endif |