ethernet: dmac filter checks secondary mac addrs
Maintain a list of secondary MAC addresses on ethernet_interface_t.
In ethernet-input dmac filtering, If packets do not match the
primary interface hardware address, check to see if they match the
other addresses.
Type: feature
Change-Id: Ie0edf45cae0d85c038a61086c47b3ae82d7e162d
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
diff --git a/src/vnet/ethernet/interface.c b/src/vnet/ethernet/interface.c
index 0f54aa1..a0fa61c 100644
--- a/src/vnet/ethernet/interface.c
+++ b/src/vnet/ethernet/interface.c
@@ -892,6 +892,53 @@
index ? pool_elt_at_index (em->interfaces, i->hw_instance) : 0);
}
+mac_address_t *
+ethernet_interface_add_del_address (ethernet_main_t * em,
+ u32 hw_if_index, const u8 * address,
+ u8 is_add)
+{
+ ethernet_interface_t *ei = ethernet_get_interface (em, hw_if_index);
+ mac_address_t *if_addr = 0;
+
+ /* return if there is not an ethernet interface for this hw interface */
+ if (!ei)
+ return 0;
+
+ /* determine whether the address is configured on the interface */
+ vec_foreach (if_addr, ei->secondary_addrs)
+ {
+ if (!ethernet_mac_address_equal (if_addr->bytes, address))
+ continue;
+
+ break;
+ }
+
+ if (if_addr && vec_is_member (ei->secondary_addrs, if_addr))
+ {
+ /* delete found address */
+ if (!is_add)
+ {
+ vec_delete (ei->secondary_addrs, 1, if_addr - ei->secondary_addrs);
+ if_addr = 0;
+ }
+ /* address already found, so nothing needs to be done if adding */
+ }
+ else
+ {
+ /* if_addr could be 0 or past the end of the vector. reset to 0 */
+ if_addr = 0;
+
+ /* add new address */
+ if (is_add)
+ {
+ vec_add2 (ei->secondary_addrs, if_addr, 1);
+ clib_memcpy (&if_addr->bytes, address, sizeof (if_addr->bytes));
+ }
+ }
+
+ return if_addr;
+}
+
int
vnet_delete_loopback_interface (u32 sw_if_index)
{