tools include: Add headers to make tools builds more hermetic

tools/lib/bpf/netlink.c depends on rtnetlink.h and genetlink.h (via
nlattr.h) which then depends on if_addr.h.

tools/bpf/bpftool/link.c depends on netfilter_arp.h which then depends
on netfilter.h.

Update check-headers.sh to keep these in sync.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: André Almeida <andrealmeid@igalia.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Darren Hart <dvhart@infradead.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Ido Schimmel <idosch@nvidia.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jason Xing <kerneljasonxing@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jonas Gottlieb <jonas.gottlieb@stackit.cloud>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Maurice Lambert <mauricelambert434@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Machata <petrm@nvidia.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yury Norov <yury.norov@gmail.com>
Cc: Yuyang Huang <yuyanghuang@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 79 insertions, 0 deletions

diff --git a/tools/include/uapi/linux/if_addr.h b/tools/include/uapi/linux/if_addr.h
new file mode 100644
index 000000000000..aa7958b4e41d
--- /dev/null
+++ b/tools/include/uapi/linux/if_addr.h
@@ -0,0 +1,79 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI__LINUX_IF_ADDR_H
+#define _UAPI__LINUX_IF_ADDR_H
+
+#include <linux/types.h>
+#include <linux/netlink.h>
+
+struct ifaddrmsg {
+	__u8		ifa_family;
+	__u8		ifa_prefixlen;	/* The prefix length		*/
+	__u8		ifa_flags;	/* Flags			*/
+	__u8		ifa_scope;	/* Address scope		*/
+	__u32		ifa_index;	/* Link index			*/
+};
+
+/*
+ * Important comment:
+ * IFA_ADDRESS is prefix address, rather than local interface address.
+ * It makes no difference for normally configured broadcast interfaces,
+ * but for point-to-point IFA_ADDRESS is DESTINATION address,
+ * local address is supplied in IFA_LOCAL attribute.
+ *
+ * IFA_FLAGS is a u32 attribute that extends the u8 field ifa_flags.
+ * If present, the value from struct ifaddrmsg will be ignored.
+ */
+enum {
+	IFA_UNSPEC,
+	IFA_ADDRESS,
+	IFA_LOCAL,
+	IFA_LABEL,
+	IFA_BROADCAST,
+	IFA_ANYCAST,
+	IFA_CACHEINFO,
+	IFA_MULTICAST,
+	IFA_FLAGS,
+	IFA_RT_PRIORITY,	/* u32, priority/metric for prefix route */
+	IFA_TARGET_NETNSID,
+	IFA_PROTO,		/* u8, address protocol */
+	__IFA_MAX,
+};
+
+#define IFA_MAX (__IFA_MAX - 1)
+
+/* ifa_flags */
+#define IFA_F_SECONDARY		0x01
+#define IFA_F_TEMPORARY		IFA_F_SECONDARY
+
+#define	IFA_F_NODAD		0x02
+#define IFA_F_OPTIMISTIC	0x04
+#define IFA_F_DADFAILED		0x08
+#define	IFA_F_HOMEADDRESS	0x10
+#define IFA_F_DEPRECATED	0x20
+#define IFA_F_TENTATIVE		0x40
+#define IFA_F_PERMANENT		0x80
+#define IFA_F_MANAGETEMPADDR	0x100
+#define IFA_F_NOPREFIXROUTE	0x200
+#define IFA_F_MCAUTOJOIN	0x400
+#define IFA_F_STABLE_PRIVACY	0x800
+
+struct ifa_cacheinfo {
+	__u32	ifa_prefered;
+	__u32	ifa_valid;
+	__u32	cstamp; /* created timestamp, hundredths of seconds */
+	__u32	tstamp; /* updated timestamp, hundredths of seconds */
+};
+
+/* backwards compatibility for userspace */
+#ifndef __KERNEL__
+#define IFA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
+#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
+#endif
+
+/* ifa_proto */
+#define IFAPROT_UNSPEC		0
+#define IFAPROT_KERNEL_LO	1	/* loopback */
+#define IFAPROT_KERNEL_RA	2	/* set by kernel from router announcement */
+#define IFAPROT_KERNEL_LL	3	/* link-local set by kernel */
+
+#endif