net: use get/put_unaligned_* helpers

[net-next-2.6.git] / net / bridge / br_stp_bpdu.c

diff --git a/net/bridge/br_stp_bpdu.c b/net/bridge/br_stp_bpdu.c
index 60112bce66984343e8ab13121c1304a1cde29739..ddeb6e5d45d612c67fd829e49e06bd0119da78a8 100644 (file)
--- a/net/bridge/br_stp_bpdu.c
+++ b/net/bridge/br_stp_bpdu.c
@@ -17,6 +17,7 @@
 #include <linux/netfilter_bridge.h>
 #include <linux/etherdevice.h>
 #include <linux/llc.h>
+#include <net/net_namespace.h>
 #include <net/llc.h>
 #include <net/llc_pdu.h>
 #include <asm/unaligned.h>
@@ -57,14 +58,14 @@ static inline void br_set_ticks(unsigned char *dest, int j)
 {
        unsigned long ticks = (STP_HZ * j)/ HZ;
 
-       put_unaligned(htons(ticks), (__be16 *)dest);
+       put_unaligned_be16(ticks, dest);
 }
 
 static inline int br_get_ticks(const unsigned char *src)
 {
-       unsigned long ticks = ntohs(get_unaligned((__be16 *)src));
+       unsigned long ticks = get_unaligned_be16(src);
 
-       return (ticks * HZ + STP_HZ - 1) / STP_HZ;
+       return DIV_ROUND_UP(ticks * HZ, STP_HZ);
 }
 
 /* called under bridge lock */
@@ -141,6 +142,9 @@ int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
        struct net_bridge *br;
        const unsigned char *buf;
 
+       if (dev_net(dev) != &init_net)
+               goto err;
+
        if (!p)
                goto err;