selftests/bpf: missing headers test_lwt_seg6local

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'

v2: moving the headers to tools/include/uapi/.

Reported-by: Y Song <ys114321@gmail.com>
Signed-off-by: Mathieu Xhonneux <m.xhonneux@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

diff --git a/tools/include/uapi/linux/seg6.h b/tools/include/uapi/linux/seg6.h
new file mode 100644 (file)
index 0000000..286e8d6
--- /dev/null
+++ b/tools/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@uclouvain.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/include/uapi/linux/seg6_local.h b/tools/include/uapi/linux/seg6_local.h
new file mode 100644 (file)
index 0000000..edc138b
--- /dev/null
+++ b/tools/include/uapi/linux/seg6_local.h
@@ -0,0 +1,80 @@
+/*
+ *  SR-IPv6 implementation
+ *
+ *  Author:
+ *  David Lebrun <david.lebrun@uclouvain.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