[PATCH bpf-next v5 11/15] selftests/bpf: refactor some net macros to bpf_tracing_net.h

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Refactor bpf_iter_ipv6_route.c and bpf_iter_netlink.c
so net macros, originally from various include/linux header
files, are moved to a new header file
bpf_tracing_net.h. The goal is to improve reuse so
networking tracing programs do not need to
copy these macros every time they use them.

Acked-by: Andrii Nakryiko <andriin@xxxxxx>
Acked-by: Martin KaFai Lau <kafai@xxxxxx>
Signed-off-by: Yonghong Song <yhs@xxxxxx>
---
 .../selftests/bpf/progs/bpf_iter_ipv6_route.c    |  7 +------
 .../selftests/bpf/progs/bpf_iter_netlink.c       |  4 +---
 .../selftests/bpf/progs/bpf_tracing_net.h        | 16 ++++++++++++++++
 3 files changed, 18 insertions(+), 9 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/progs/bpf_tracing_net.h

diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_ipv6_route.c b/tools/testing/selftests/bpf/progs/bpf_iter_ipv6_route.c
index 93a452d1d136..d58d9f1642b5 100644
--- a/tools/testing/selftests/bpf/progs/bpf_iter_ipv6_route.c
+++ b/tools/testing/selftests/bpf/progs/bpf_iter_ipv6_route.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 /* Copyright (c) 2020 Facebook */
 #include "bpf_iter.h"
+#include "bpf_tracing_net.h"
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_tracing.h>
 
@@ -8,12 +9,6 @@ char _license[] SEC("license") = "GPL";
 
 extern bool CONFIG_IPV6_SUBTREES __kconfig __weak;
 
-#define RTF_GATEWAY		0x0002
-#define IFNAMSIZ		16
-#define fib_nh_gw_family	nh_common.nhc_gw_family
-#define fib_nh_gw6		nh_common.nhc_gw.ipv6
-#define fib_nh_dev		nh_common.nhc_dev
-
 SEC("iter/ipv6_route")
 int dump_ipv6_route(struct bpf_iter__ipv6_route *ctx)
 {
diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_netlink.c b/tools/testing/selftests/bpf/progs/bpf_iter_netlink.c
index fda5036fdf75..cec82a419800 100644
--- a/tools/testing/selftests/bpf/progs/bpf_iter_netlink.c
+++ b/tools/testing/selftests/bpf/progs/bpf_iter_netlink.c
@@ -1,14 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0
 /* Copyright (c) 2020 Facebook */
 #include "bpf_iter.h"
+#include "bpf_tracing_net.h"
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_tracing.h>
 
 char _license[] SEC("license") = "GPL";
 
-#define sk_rmem_alloc	sk_backlog.rmem_alloc
-#define sk_refcnt	__sk_common.skc_refcnt
-
 static inline struct inode *SOCK_INODE(struct socket *socket)
 {
 	return &container_of(socket, struct socket_alloc, socket)->vfs_inode;
diff --git a/tools/testing/selftests/bpf/progs/bpf_tracing_net.h b/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
new file mode 100644
index 000000000000..1f38a1098727
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
+#ifndef __BPF_TRACING_NET_H__
+#define __BPF_TRACING_NET_H__
+
+#define IFNAMSIZ		16
+
+#define RTF_GATEWAY		0x0002
+
+#define fib_nh_dev		nh_common.nhc_dev
+#define fib_nh_gw_family	nh_common.nhc_gw_family
+#define fib_nh_gw6		nh_common.nhc_gw.ipv6
+
+#define sk_rmem_alloc		sk_backlog.rmem_alloc
+#define sk_refcnt		__sk_common.skc_refcnt
+
+#endif
-- 
2.24.1





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