@@ -127,6 +127,10 @@
/* hardware time stamping: parameters in linux/net_tstamp.h */
#define SIOCSHWTSTAMP 0x89b0
+/* Device address management */
+#define SIOCADDHWADDR 0x89c0 /* Unicast address list */
+#define SIOCDELHWADDR 0x8932
+
/* Device private ioctl calls */
/*
@@ -314,6 +314,26 @@ static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
ifr->ifr_newname[IFNAMSIZ-1] = '\0';
return dev_change_name(dev, ifr->ifr_newname);
+ case SIOCADDHWADDR:
+ if (!ops->ndo_set_rx_mode ||
+ ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
+ return -EINVAL;
+ if (!netif_device_present(dev))
+ return -ENODEV;
+ if (!is_unicast_ether_addr(addr))
+ return -EINVAL;
+ return dev_uc_add_excl(dev, ifr->ifr_hwaddr.sa_data);
+
+ case SIOCDELHWADDR:
+ if (!ops->ndo_set_rx_mode ||
+ ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
+ return -EINVAL;
+ if (!netif_device_present(dev))
+ return -ENODEV;
+ if (!is_unicast_ether_addr(addr))
+ return -EINVAL;
+ return dev_uc_del(dev, ifr->ifr_hwaddr.sa_data);
+
case SIOCSHWTSTAMP:
err = net_hwtstamp_validate(ifr);
if (err)
@@ -532,6 +552,8 @@ int dev_ioctl(struct net *net, unsigned int cmd, void __user *arg)
case SIOCBRADDIF:
case SIOCBRDELIF:
case SIOCSHWTSTAMP:
+ case SIOCADDHWADDR:
+ case SIOCDELHWADDR:
if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
return -EPERM;
/* fall through */
There is currently a way to manage the multicast HW address list through SIOCADDMULTI/SIOCDELMULTI, but there is no way to consistently manage the unicast list. Some drivers provide FDB based interface, but that depends on driver configuration in almost every case. This patch provides 2 new ioctls that allow on to add/delete unicast HW address on a device. Signed-off-by: Vlad Yasevich <vyasevic@redhat.com> --- include/uapi/linux/sockios.h | 4 ++++ net/core/dev_ioctl.c | 22 ++++++++++++++++++++++ 2 files changed, 26 insertions(+), 0 deletions(-)