diff options
| -rw-r--r-- | net/ethernet/eth.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c index 1387e5411f77..12c765715acf 100644 --- a/net/ethernet/eth.c +++ b/net/ethernet/eth.c @@ -266,8 +266,11 @@ void eth_header_cache_update(struct hh_cache *hh, struct net_device *dev, static int eth_mac_addr(struct net_device *dev, void *p) { struct sockaddr *addr = p; + if (netif_running(dev)) return -EBUSY; + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); return 0; } |