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linux-next/samples/bpf/xdp_tx_iptunnel_common.h

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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>
2019-05-29 01:10:09 +08:00
/* 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>
2016-12-08 07:53:14 +08:00
/* 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
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