diff options
| author | Martin KaFai Lau <kafai@fb.com> | 2016-12-07 15:53:14 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-12-08 14:25:13 -0500 |
| commit | 12d8bb64e3f65f5287ff17c084d076a28daa8096 (patch) | |
| tree | e772f55d041956a3e07a487b48b42df8a0b830bf /samples/bpf/xdp_tx_iptunnel_common.h | |
| parent | ea3349a03519dcd4f32d949cd80ab995623dc5ac (diff) | |
bpf: xdp: Add XDP example for head adjustment
The XDP prog checks if the incoming packet matches any VIP:PORT
combination in the BPF hashmap. If it is, it will encapsulate
the packet with a IPv4/v6 header as instructed by the value of
the BPF hashmap and then XDP_TX it out.
The VIP:PORT -> IP-Encap-Info can be specified by the cmd args
of the user prog.
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf/xdp_tx_iptunnel_common.h')
| -rw-r--r-- | samples/bpf/xdp_tx_iptunnel_common.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/samples/bpf/xdp_tx_iptunnel_common.h b/samples/bpf/xdp_tx_iptunnel_common.h new file mode 100644 index 000000000000..dd12cc35110f --- /dev/null +++ b/samples/bpf/xdp_tx_iptunnel_common.h @@ -0,0 +1,37 @@ +/* Copyright (c) 2016 Facebook + * + * 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. + */ +#ifndef _SAMPLES_BPF_XDP_TX_IPTNL_COMMON_H +#define _SAMPLES_BPF_XDP_TX_IPTNL_COMMON_H + +#include <linux/types.h> + +#define MAX_IPTNL_ENTRIES 256U + +struct vip { + union { + __u32 v6[4]; + __u32 v4; + } daddr; + __u16 dport; + __u16 family; + __u8 protocol; +}; + +struct iptnl_info { + union { + __u32 v6[4]; + __u32 v4; + } saddr; + union { + __u32 v6[4]; + __u32 v4; + } daddr; + __u16 family; + __u8 dmac[6]; +}; + +#endif |