linux/samples/bpf/xdp_tx_iptunnel_common.h

/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright (c) 2016 Facebook
 */
#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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 107 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528171438.615055994@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-05-28 17:10:09 +00:00			`/* SPDX-License-Identifier: GPL-2.0-only */`
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> 2016-12-07 23:53:14 +00:00			`/* Copyright (c) 2016 Facebook`
			`*/`
			`#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`