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-rw-r--r--net/bridge/br_sysfs_br.c11
1 files changed, 3 insertions, 8 deletions
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index e157b0dbcd8..82385fd2f18 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -298,23 +298,18 @@ static ssize_t store_group_addr(struct device *d,
const char *buf, size_t len)
{
struct net_bridge *br = to_bridge(d);
- unsigned int new_addr[6];
+ u8 new_addr[6];
int i;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
- if (sscanf(buf, "%x:%x:%x:%x:%x:%x",
+ if (sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
&new_addr[0], &new_addr[1], &new_addr[2],
&new_addr[3], &new_addr[4], &new_addr[5]) != 6)
return -EINVAL;
- /* Must be 01:80:c2:00:00:0X */
- for (i = 0; i < 5; i++)
- if (new_addr[i] != br_reserved_address[i])
- return -EINVAL;
-
- if (new_addr[5] & ~0xf)
+ if (!is_link_local(new_addr))
return -EINVAL;
if (new_addr[5] == 1 || /* 802.3x Pause address */