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Date: Mon, 31 Oct 2022 17:55:17 +0800 From: Yang Jihong <yangjihong1@...wei.com> To: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>, <keescook@...omium.org>, <gustavoars@...nel.org>, <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <bpf@...r.kernel.org>, <acme@...nel.org> CC: <yangjihong1@...wei.com> Subject: [PATCH] uapi: Add missing linux/stddef.h header file to in.h commit 5854a09b4957 ("net/ipv4: Use __DECLARE_FLEX_ARRAY() helper") does not include "linux/stddef.h" header file, and tools headers update linux/in.h copy, BPF prog fails to be compiled: CLNG-BPF [test_maps] bpf_flow.bpf.o CLNG-BPF [test_maps] cgroup_skb_sk_lookup_kern.bpf.o In file included from progs/cgroup_skb_sk_lookup_kern.c:9: /root/linux/tools/include/uapi/linux/in.h:199:3: error: type name requires a specifier or qualifier __DECLARE_FLEX_ARRAY(__be32, imsf_slist_flex); ^ /root/linux/tools/include/uapi/linux/in.h:199:32: error: type specifier missing, defaults to 'int' [-Werror,-Wimplicit-int] __DECLARE_FLEX_ARRAY(__be32, imsf_slist_flex); ^ 2 errors generated. To maintain consistency, add missing header file to kernel. Fixes: 5854a09b4957 ("net/ipv4: Use __DECLARE_FLEX_ARRAY() helper") Signed-off-by: Yang Jihong <yangjihong1@...wei.com> --- include/uapi/linux/in.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/in.h b/include/uapi/linux/in.h index f243ce665f74..79015665daf1 100644 --- a/include/uapi/linux/in.h +++ b/include/uapi/linux/in.h @@ -22,6 +22,7 @@ #include <linux/types.h> #include <linux/libc-compat.h> #include <linux/socket.h> +#include <linux/stddef.h> #if __UAPI_DEF_IN_IPPROTO /* Standard well-defined IP protocols. */ -- 2.30.GIT
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