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Subject[PATCH 02/12] samples/bpf sock_example: Avoid getting ethhdr from two includes
Date
From: Arnaldo Carvalho de Melo <acme@redhat.com>

To avoid the following build failure on Alpine Linux 3.4, that has
clang-3.8 with the bpf target:

HOSTCC samples/bpf/sock_example.o
In file included from /usr/include/net/ethernet.h:10:0,
from /git/linux/samples/bpf/sock_example.h:7,
from /git/linux/samples/bpf/sock_example.c:30:
/usr/include/netinet/if_ether.h:96:8: error: redefinition of 'struct
ethhdr'
struct ethhdr {
^
In file included from /git/linux/samples/bpf/sock_example.c:26:0:
./usr/include/linux/if_ether.h:144:8: note: originally defined here
struct ethhdr {
^
scripts/Makefile.host:124: recipe for target
'samples/bpf/sock_example.o' failed
make[2]: *** [samples/bpf/sock_example.o] Error 1
/git/linux/Makefile:1658: recipe for target 'samples/bpf/' failed

So include net/if_ether.h for the needs of sock_example.h, using the
same include that sock_example.c uses.

Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Joe Stringer <joe@ovn.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-m9avekl1b651qe1r1zd5tzz9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
samples/bpf/sock_example.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/bpf/sock_example.h b/samples/bpf/sock_example.h
index 09f7fe7e5fd7..d8014065d479 100644
--- a/samples/bpf/sock_example.h
+++ b/samples/bpf/sock_example.h
@@ -4,7 +4,7 @@
#include <unistd.h>
#include <string.h>
#include <errno.h>
-#include <net/ethernet.h>
+#include <linux/if_ether.h>
#include <net/if.h>
#include <linux/if_packet.h>
#include <arpa/inet.h>
--
2.9.3
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