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selftests/bpf: Fix a selftest compilation error

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When building the kernel and selftest with clang compiler (llvm17 or llvm18),
I hit the following compilation failure:
  In file included from progs/test_lwt_redirect.c:3:
  In file included from /usr/include/linux/ip.h:21:
  In file included from /usr/include/asm/byteorder.h:5:
  In file included from /usr/include/linux/byteorder/little_endian.h:13:
  /usr/include/linux/swab.h:136:8: error: unknown type name '__always_inline'
    136 | static __always_inline unsigned long __swab(const unsigned long y)
        |        ^
  /usr/include/linux/swab.h:171:8: error: unknown type name '__always_inline'
    171 | static __always_inline __u16 __swab16p(const __u16 *p)
  ...

bpf_helpers.h file provided a definition for __always_inline.
Putting 'ip.h' after 'bpf_helpers.h' fixed the issue.

Fixes: 43a7c3ef8a ("selftests/bpf: Add lwt_xmit tests for BPF_REDIRECT")
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230818174312.1883381-1-yonghong.song@linux.dev
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
This commit is contained in:
Yonghong Song 2023-08-18 10:43:12 -07:00 committed by Martin KaFai Lau
parent 63ae8eb2c5
commit 0a55264cf9
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/bpf/progs/test_lwt_redirect.c
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@ -1,8 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/bpf.h>
#include <linux/ip.h>
#include <bpf/bpf_endian.h>
#include <bpf/bpf_helpers.h>
#include <linux/ip.h>
#include "bpf_tracing_net.h"
/* We don't care about whether the packet can be received by network stack.