[PATCH] libbridge: fix headers conflict with musl libc

[Baruch Siach <baruch@xxxxxxxxxx>]

Don't including kernel headers directly to avoid headers conflict like:

In file included from .../sysroot/usr/include/linux/if_bridge.h:18:0,
                 from libbridge.h:26,
                 from libbridge_if.c:26:
.../sysroot/usr/include/linux/in6.h:32:8: error: redefinition of ‘struct in6_addr’
 struct in6_addr {
        ^
In file included from libbridge.h:24:0,
                 from libbridge_if.c:26:
.../sysroot/usr/include/netinet/in.h:23:8: note: originally defined here
 struct in6_addr {
        ^

Instead copy the required linux/if_bridge.h definitions into
libbridge_private.h.

Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx>
---
 libbridge/libbridge.h         |  1 -
 libbridge/libbridge_private.h | 81 ++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 80 insertions(+), 2 deletions(-)

diff --git a/libbridge/libbridge.h b/libbridge/libbridge.h
index ff047f933cd6..18b40cd90413 100644
--- a/libbridge/libbridge.h
+++ b/libbridge/libbridge.h
@@ -23,7 +23,6 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <linux/if.h>
-#include <linux/if_bridge.h>
 
 /* defined in net/if.h but that conflicts with linux/if.h... */
 extern unsigned int if_nametoindex (const char *__ifname);
diff --git a/libbridge/libbridge_private.h b/libbridge/libbridge_private.h
index 99a511dae00a..3ddbe1a7c48d 100644
--- a/libbridge/libbridge_private.h
+++ b/libbridge/libbridge_private.h
@@ -24,7 +24,86 @@
 #include <linux/sockios.h>
 #include <sys/time.h>
 #include <sys/ioctl.h>
-#include <linux/if_bridge.h>
+
+/* From linux/if_ether.h */
+#ifndef ETH_ALEN
+#define ETH_ALEN	6
+#endif
+
+/* From linux/if_bridge.h */
+#define BRCTL_GET_VERSION 0
+#define BRCTL_GET_BRIDGES 1
+#define BRCTL_ADD_BRIDGE 2
+#define BRCTL_DEL_BRIDGE 3
+#define BRCTL_ADD_IF 4
+#define BRCTL_DEL_IF 5
+#define BRCTL_GET_BRIDGE_INFO 6
+#define BRCTL_GET_PORT_LIST 7
+#define BRCTL_SET_BRIDGE_FORWARD_DELAY 8
+#define BRCTL_SET_BRIDGE_HELLO_TIME 9
+#define BRCTL_SET_BRIDGE_MAX_AGE 10
+#define BRCTL_SET_AGEING_TIME 11
+#define BRCTL_SET_GC_INTERVAL 12
+#define BRCTL_GET_PORT_INFO 13
+#define BRCTL_SET_BRIDGE_STP_STATE 14
+#define BRCTL_SET_BRIDGE_PRIORITY 15
+#define BRCTL_SET_PORT_PRIORITY 16
+#define BRCTL_SET_PATH_COST 17
+#define BRCTL_GET_FDB_ENTRIES 18
+
+#define BR_STATE_DISABLED 0
+#define BR_STATE_LISTENING 1
+#define BR_STATE_LEARNING 2
+#define BR_STATE_FORWARDING 3
+#define BR_STATE_BLOCKING 4
+
+struct __bridge_info {
+	__u64 designated_root;
+	__u64 bridge_id;
+	__u32 root_path_cost;
+	__u32 max_age;
+	__u32 hello_time;
+	__u32 forward_delay;
+	__u32 bridge_max_age;
+	__u32 bridge_hello_time;
+	__u32 bridge_forward_delay;
+	__u8 topology_change;
+	__u8 topology_change_detected;
+	__u8 root_port;
+	__u8 stp_enabled;
+	__u32 ageing_time;
+	__u32 gc_interval;
+	__u32 hello_timer_value;
+	__u32 tcn_timer_value;
+	__u32 topology_change_timer_value;
+	__u32 gc_timer_value;
+};
+
+struct __port_info {
+	__u64 designated_root;
+	__u64 designated_bridge;
+	__u16 port_id;
+	__u16 designated_port;
+	__u32 path_cost;
+	__u32 designated_cost;
+	__u8 state;
+	__u8 top_change_ack;
+	__u8 config_pending;
+	__u8 unused0;
+	__u32 message_age_timer_value;
+	__u32 forward_delay_timer_value;
+	__u32 hold_timer_value;
+};
+
+struct __fdb_entry {
+	__u8 mac_addr[ETH_ALEN];
+	__u8 port_no;
+	__u8 is_local;
+	__u32 ageing_timer_value;
+	__u8 port_hi;
+	__u8 pad0;
+	__u16 unused;
+};
 
 #define MAX_BRIDGES	1024
 #define MAX_PORTS	1024
-- 
2.10.1