[PATCH v1] bridge: Use helpers to handle MAC address
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: 2017-12-19 18:10:57
Also in:
bridge
Subsystem:
ethernet bridge, networking [general], the rest · Maintainers:
Nikolay Aleksandrov, Ido Schimmel, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Use %pM to print MAC mac_pton() to convert it from ASCII to binary format, and ether_addr_copy() to copy. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- net/bridge/br_sysfs_br.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-)
diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 723f25eed8ea..b1be0dcfba6b 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c@@ -272,10 +272,7 @@ static ssize_t group_addr_show(struct device *d, struct device_attribute *attr, char *buf) { struct net_bridge *br = to_bridge(d); - return sprintf(buf, "%x:%x:%x:%x:%x:%x\n", - br->group_addr[0], br->group_addr[1], - br->group_addr[2], br->group_addr[3], - br->group_addr[4], br->group_addr[5]); + return sprintf(buf, "%pM\n", br->group_addr); } static ssize_t group_addr_store(struct device *d,
@@ -284,14 +281,11 @@ static ssize_t group_addr_store(struct device *d, { struct net_bridge *br = to_bridge(d); u8 new_addr[6]; - int i; if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN)) return -EPERM; - 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) + if (!mac_pton(buf, new_addr)) return -EINVAL; if (!is_link_local_ether_addr(new_addr))
@@ -306,8 +300,7 @@ static ssize_t group_addr_store(struct device *d, return restart_syscall(); spin_lock_bh(&br->lock); - for (i = 0; i < 6; i++) - br->group_addr[i] = new_addr[i]; + ether_addr_copy(br->group_addr, new_addr); spin_unlock_bh(&br->lock); br->group_addr_set = true;
--
2.15.1