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--- a/include/linux-private/linux/if_ether.h
+++ b/include/linux-private/linux/if_ether.h
@@ -22,6 +22,7 @@
#define _LINUX_IF_ETHER_H
#include <linux/types.h>
+#include <linux/libc-compat.h>
/*
* IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble
@@ -117,10 +118,12 @@
* This is an Ethernet frame header.
*/
+#if __UAPI_DEF_ETHHDR
struct ethhdr {
unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
unsigned char h_source[ETH_ALEN]; /* source ether addr */
__be16 h_proto; /* packet type ID field */
} __attribute__((packed));
+#endif
#endif /* _LINUX_IF_ETHER_H */
--- a/include/linux-private/linux/libc-compat.h
+++ b/include/linux-private/linux/libc-compat.h
@@ -48,10 +48,18 @@
#ifndef _LIBC_COMPAT_H
#define _LIBC_COMPAT_H
-/* We have included glibc headers... */
-#if defined(__GLIBC__)
+/* We're used from userspace... */
+#if !defined(__KERNEL__)
-/* Coordinate with glibc netinet/in.h header. */
+/* Coordinate with libc netinet/if_ether.h */
+#ifdef _NETINET_IF_ETHER_H /* musl */
+#define __UAPI_DEF_ETHHDR 0
+#else
+/* glibc uses __NETINET_IF_ETHER_H, and uses the uapi header. */
+#define __UAPI_DEF_ETHHDR 1
+#endif
+
+/* Coordinate with libc netinet/in.h header. */
#if defined(_NETINET_IN_H)
/* GLIBC headers included first so don't define anything
@@ -64,15 +72,7 @@
#define __UAPI_DEF_IN_CLASS 0
#define __UAPI_DEF_IN6_ADDR 0
-/* The exception is the in6_addr macros which must be defined
- * if the glibc code didn't define them. This guard matches
- * the guard in glibc/inet/netinet/in.h which defines the
- * additional in6_addr macros e.g. s6_addr16, and s6_addr32. */
-#if defined(__USE_MISC) || defined (__USE_GNU)
#define __UAPI_DEF_IN6_ADDR_ALT 0
-#else
-#define __UAPI_DEF_IN6_ADDR_ALT 1
-#endif
#define __UAPI_DEF_SOCKADDR_IN6 0
#define __UAPI_DEF_IPV6_MREQ 0
#define __UAPI_DEF_IPPROTO_V6 0
@@ -83,7 +83,7 @@
#else
/* Linux headers included first, and we must define everything
- * we need. The expectation is that glibc will check the
+ * we need. The expectation is that libc will check the
* __UAPI_DEF_* defines and adjust appropriately. */
#define __UAPI_DEF_IN_ADDR 1
#define __UAPI_DEF_IN_IPPROTO 1
@@ -93,7 +93,7 @@
#define __UAPI_DEF_IN_CLASS 1
#define __UAPI_DEF_IN6_ADDR 1
-/* We unconditionally define the in6_addr macros and glibc must
+/* We unconditionally define the in6_addr macros and libc must
* coordinate. */
#define __UAPI_DEF_IN6_ADDR_ALT 1
#define __UAPI_DEF_SOCKADDR_IN6 1
@@ -115,7 +115,10 @@
/* If we did not see any headers from any supported C libraries,
* or we are being included in the kernel, then define everything
* that we need. */
-#else /* !defined(__GLIBC__) */
+#else /* defined(__KERNEL__) */
+
+/* Definitions for if/ether.h */
+#define __UAPI_DEF_ETHHDR 1
/* Definitions for in.h */
#define __UAPI_DEF_IN_ADDR 1
@@ -138,6 +141,6 @@
/* Definitions for xattr.h */
#define __UAPI_DEF_XATTR 1
-#endif /* __GLIBC__ */
+#endif /* defined(__KERNEL__) */
#endif /* _LIBC_COMPAT_H */
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