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Date: Fri, 25 May 2018 09:20:37 -0700
From: Song Liu <liu.song.a23@...il.com>
To: Mathieu Xhonneux <m.xhonneux@...il.com>
Cc: netdev@...r.kernel.org, ys114321@...il.com, daniel@...earbox.net,
alexei.starovoitov@...il.com
Subject: Re: [PATCH bpf-next] selftests/bpf: missing headers test_lwt_seg6local
On Fri, May 25, 2018 at 4:20 AM, Mathieu Xhonneux <m.xhonneux@...il.com> wrote:
> Previous patch "selftests/bpf: test for seg6local End.BPF action" lacks
> some UAPI headers in tools/.
>
> clang -I. -I./include/uapi -I../../../include/uapi -idirafter
> /usr/local/include -idirafter
> /data/users/yhs/work/llvm/build/install/lib/clang/7.0.0/include
> -idirafter /usr/include -Wno-compare-distinct-pointer-types \
> -O2 -target bpf -emit-llvm -c test_lwt_seg6local.c -o - | \
> llc -march=bpf -mcpu=generic -filetype=obj -o
> [...]/net-next/tools/testing/selftests/bpf/test_lwt_seg6local.o
> test_lwt_seg6local.c:4:10: fatal error: 'linux/seg6_local.h' file not found
> ^~~~~~~~~~~~~~~~~~~~
> 1 error generated.
> make: Leaving directory
> `/data/users/yhs/work/net-next/tools/testing/selftests/bpf'
>
> Reported-by: Y Song <ys114321@...il.com>
> Signed-off-by: Mathieu Xhonneux <m.xhonneux@...il.com>
> ---
> .../selftests/bpf/include/uapi/linux/seg6.h | 55 +++++++++++++++
> .../selftests/bpf/include/uapi/linux/seg6_local.h | 80 ++++++++++++++++++++++
> 2 files changed, 135 insertions(+)
> create mode 100644 tools/testing/selftests/bpf/include/uapi/linux/seg6.h
> create mode 100644 tools/testing/selftests/bpf/include/uapi/linux/seg6_local.h
>
> diff --git a/tools/testing/selftests/bpf/include/uapi/linux/seg6.h b/tools/testing/selftests/bpf/include/uapi/linux/seg6.h
> new file mode 100644
> index 000000000000..286e8d6a8e98
> --- /dev/null
> +++ b/tools/testing/selftests/bpf/include/uapi/linux/seg6.h
> @@ -0,0 +1,55 @@
> +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
> +/*
> + * SR-IPv6 implementation
> + *
> + * Author:
> + * David Lebrun <david.lebrun@...ouvain.be>
> + *
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * as published by the Free Software Foundation; either version
> + * 2 of the License, or (at your option) any later version.
> + */
> +
> +#ifndef _UAPI_LINUX_SEG6_H
> +#define _UAPI_LINUX_SEG6_H
> +
> +#include <linux/types.h>
> +#include <linux/in6.h> /* For struct in6_addr. */
> +
> +/*
> + * SRH
> + */
> +struct ipv6_sr_hdr {
> + __u8 nexthdr;
> + __u8 hdrlen;
> + __u8 type;
> + __u8 segments_left;
> + __u8 first_segment; /* Represents the last_entry field of SRH */
> + __u8 flags;
> + __u16 tag;
> +
> + struct in6_addr segments[0];
> +};
> +
> +#define SR6_FLAG1_PROTECTED (1 << 6)
> +#define SR6_FLAG1_OAM (1 << 5)
> +#define SR6_FLAG1_ALERT (1 << 4)
> +#define SR6_FLAG1_HMAC (1 << 3)
> +
> +#define SR6_TLV_INGRESS 1
> +#define SR6_TLV_EGRESS 2
> +#define SR6_TLV_OPAQUE 3
> +#define SR6_TLV_PADDING 4
> +#define SR6_TLV_HMAC 5
> +
> +#define sr_has_hmac(srh) ((srh)->flags & SR6_FLAG1_HMAC)
> +
> +struct sr6_tlv {
> + __u8 type;
> + __u8 len;
> + __u8 data[0];
> +};
> +
> +#endif
> diff --git a/tools/testing/selftests/bpf/include/uapi/linux/seg6_local.h b/tools/testing/selftests/bpf/include/uapi/linux/seg6_local.h
> new file mode 100644
> index 000000000000..edc138bdc56d
> --- /dev/null
> +++ b/tools/testing/selftests/bpf/include/uapi/linux/seg6_local.h
> @@ -0,0 +1,80 @@
> +/*
> + * SR-IPv6 implementation
> + *
> + * Author:
> + * David Lebrun <david.lebrun@...ouvain.be>
> + *
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * as published by the Free Software Foundation; either version
> + * 2 of the License, or (at your option) any later version.
> + */
> +
> +#ifndef _UAPI_LINUX_SEG6_LOCAL_H
> +#define _UAPI_LINUX_SEG6_LOCAL_H
> +
> +#include <linux/seg6.h>
> +
> +enum {
> + SEG6_LOCAL_UNSPEC,
> + SEG6_LOCAL_ACTION,
> + SEG6_LOCAL_SRH,
> + SEG6_LOCAL_TABLE,
> + SEG6_LOCAL_NH4,
> + SEG6_LOCAL_NH6,
> + SEG6_LOCAL_IIF,
> + SEG6_LOCAL_OIF,
> + SEG6_LOCAL_BPF,
> + __SEG6_LOCAL_MAX,
> +};
> +#define SEG6_LOCAL_MAX (__SEG6_LOCAL_MAX - 1)
> +
> +enum {
> + SEG6_LOCAL_ACTION_UNSPEC = 0,
> + /* node segment */
> + SEG6_LOCAL_ACTION_END = 1,
> + /* adjacency segment (IPv6 cross-connect) */
> + SEG6_LOCAL_ACTION_END_X = 2,
> + /* lookup of next seg NH in table */
> + SEG6_LOCAL_ACTION_END_T = 3,
> + /* decap and L2 cross-connect */
> + SEG6_LOCAL_ACTION_END_DX2 = 4,
> + /* decap and IPv6 cross-connect */
> + SEG6_LOCAL_ACTION_END_DX6 = 5,
> + /* decap and IPv4 cross-connect */
> + SEG6_LOCAL_ACTION_END_DX4 = 6,
> + /* decap and lookup of DA in v6 table */
> + SEG6_LOCAL_ACTION_END_DT6 = 7,
> + /* decap and lookup of DA in v4 table */
> + SEG6_LOCAL_ACTION_END_DT4 = 8,
> + /* binding segment with insertion */
> + SEG6_LOCAL_ACTION_END_B6 = 9,
> + /* binding segment with encapsulation */
> + SEG6_LOCAL_ACTION_END_B6_ENCAP = 10,
> + /* binding segment with MPLS encap */
> + SEG6_LOCAL_ACTION_END_BM = 11,
> + /* lookup last seg in table */
> + SEG6_LOCAL_ACTION_END_S = 12,
> + /* forward to SR-unaware VNF with static proxy */
> + SEG6_LOCAL_ACTION_END_AS = 13,
> + /* forward to SR-unaware VNF with masquerading */
> + SEG6_LOCAL_ACTION_END_AM = 14,
> + /* custom BPF action */
> + SEG6_LOCAL_ACTION_END_BPF = 15,
> +
> + __SEG6_LOCAL_ACTION_MAX,
> +};
> +
> +#define SEG6_LOCAL_ACTION_MAX (__SEG6_LOCAL_ACTION_MAX - 1)
> +
> +enum {
> + SEG6_LOCAL_BPF_PROG_UNSPEC,
> + SEG6_LOCAL_BPF_PROG,
> + SEG6_LOCAL_BPF_PROG_NAME,
> + __SEG6_LOCAL_BPF_PROG_MAX,
> +};
> +
> +#define SEG6_LOCAL_BPF_PROG_MAX (__SEG6_LOCAL_BPF_PROG_MAX - 1)
> +
> +#endif
> --
> 2.16.1
>
Acked-by: Song Liu <songliubraving@...com>
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