0001-kernel_netlink.c-don-t-include-linux-if_bridge.h.patch
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From 723bbfd8bdb76012a3da937c7499cf3c0b111dd5 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Sat, 20 Aug 2016 11:13:56 +0200
Subject: [PATCH] kernel_netlink.c: don't include <linux/if_bridge.h>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Including <linux/if_bridge.h> causes the inclusion of <linux/in6.h>,
which defines 'struct in6_addr', also defined in <netinet/in.h>, causing
a build failure with the musl C library:
In file included from /home/thomas/projets/buildroot/output/host/usr/x86_64-buildroot-linux-musl/sysroot/usr/include/linux/if_bridge.h:18:0,
from kernel_netlink.c:42,
from kernel.c:31:
/home/thomas/projets/buildroot/output/host/usr/x86_64-buildroot-linux-musl/sysroot/usr/include/linux/in6.h:32:8: error: redefinition of ‘struct in6_addr’
struct in6_addr {
^
In file included from kernel_netlink.c:33:0,
from kernel.c:31:
/home/thomas/projets/buildroot/output/host/usr/x86_64-buildroot-linux-musl/sysroot/usr/include/netinet/in.h:23:8: note: originally defined here
struct in6_addr {
^
In file included from /home/thomas/projets/buildroot/output/host/usr/x86_64-buildroot-linux-musl/sysroot/usr/include/linux/if_bridge.h:18:0,
from kernel_netlink.c:42,
from kernel.c:31:
/home/thomas/projets/buildroot/output/host/usr/x86_64-buildroot-linux-musl/sysroot/usr/include/linux/in6.h:49:8: error: redefinition of ‘struct sockaddr_in6’
struct sockaddr_in6 {
^
In file included from kernel_netlink.c:33:0,
from kernel.c:31:
/home/thomas/projets/buildroot/output/host/usr/x86_64-buildroot-linux-musl/sysroot/usr/include/netinet/in.h:34:8: note: originally defined here
struct sockaddr_in6 {
^
In file included from /home/thomas/projets/buildroot/output/host/usr/x86_64-buildroot-linux-musl/sysroot/usr/include/linux/if_bridge.h:18:0,
from kernel_netlink.c:42,
from kernel.c:31:
/home/thomas/projets/buildroot/output/host/usr/x86_64-buildroot-linux-musl/sysroot/usr/include/linux/in6.h:59:8: error: redefinition of ‘struct ipv6_mreq’
struct ipv6_mreq {
^
In file included from kernel_netlink.c:33:0,
from kernel.c:31:
/home/thomas/projets/buildroot/output/host/usr/x86_64-buildroot-linux-musl/sysroot/usr/include/netinet/in.h:42:8: note: originally defined here
struct ipv6_mreq {
^
In order to address this, this patch removes the <linux/if_bridge.h>
inclusion, and instead defines BRCTL_GET_BRIDGES to the appropriate
value if it's not provided by the C library.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
kernel_netlink.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/kernel_netlink.c b/kernel_netlink.c
index 4eadc39..1a5b3dd 100644
--- a/kernel_netlink.c
+++ b/kernel_netlink.c
@@ -39,10 +39,14 @@ THE SOFTWARE.
#include <sys/socket.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
-#include <linux/if_bridge.h>
#include <linux/fib_rules.h>
#include <net/if_arp.h>
+/* From <linux/if_bridge.h> */
+#ifndef BRCTL_GET_BRIDGES
+#define BRCTL_GET_BRIDGES 1
+#endif
+
#if(__GLIBC__ < 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 5)
#define RTA_TABLE 15
#endif
--
2.7.4