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uapi/if_ether.h: prevent redefinition of struct ethhdr

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Musl provides its own ethhdr struct definition. Add a guard to prevent
its definition of the appropriate musl header has already been included.

glibc does not implement this header, but when glibc will implement this
they can just define __UAPI_DEF_ETHHDR 0 to make it work with the
kernel.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hauke Mehrtens
2018-01-03 23:14:21 +01:00
committed by David S. Miller
parent 7bbfe00e02
commit 6926e041a8
2 changed files with 9 additions and 0 deletions
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6
include/uapi/linux/libc-compat.h
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@@ -264,4 +264,10 @@
#endif /* __GLIBC__ */
/* Definitions for if_ether.h */
/* allow libcs like musl to deactivate this, glibc does not implement this. */
#ifndef __UAPI_DEF_ETHHDR
#define __UAPI_DEF_ETHHDR 1
#endif
#endif /* _UAPI_LIBC_COMPAT_H */