Commit 4edd4ba7 authored Feb 14, 2026 by Phil Sutter Committed by Florian Westphal Feb 17, 2026

include: uapi: netfilter_bridge.h: Cover for musl libc



Musl defines its own struct ethhdr and thus defines __UAPI_DEF_ETHHDR to
zero. To avoid struct redefinition errors, user space is therefore
supposed to include netinet/if_ether.h before (or instead of)
linux/if_ether.h. To relieve them from this burden, include the libc
header here if not building for kernel space.

Reported-by: Alyssa Ross <hi@alyssa.is>
Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Florian Westphal <fw@strlen.de>

parent a6d28eb8

include/uapi/linux/netfilter_bridge.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -5,6 +5,10 @@
		/* bridge-specific defines for netfilter.
		*/

		#ifndef __KERNEL__
		#include <netinet/if_ether.h> /* for __UAPI_DEF_ETHHDR if defined */
		#endif

		#include <linux/in.h>
		#include <linux/netfilter.h>
		#include <linux/if_ether.h>