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-rw-r--r--src/vnet/ethernet/arp.c127
1 files changed, 93 insertions, 34 deletions
diff --git a/src/vnet/ethernet/arp.c b/src/vnet/ethernet/arp.c
index c84ff47bc00..08e91373b64 100644
--- a/src/vnet/ethernet/arp.c
+++ b/src/vnet/ethernet/arp.c
@@ -522,6 +522,24 @@ arp_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
}
}
+static void
+arp_adj_fib_add (ethernet_arp_ip4_entry_t * e, uint32_t fib_index)
+{
+ fib_prefix_t pfx = {
+ .fp_len = 32,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr.ip4 = e->ip4_address,
+ };
+
+ e->fib_entry_index =
+ fib_table_entry_path_add (fib_index, &pfx, FIB_SOURCE_ADJ,
+ FIB_ENTRY_FLAG_ATTACHED,
+ DPO_PROTO_IP4, &pfx.fp_addr,
+ e->sw_if_index, ~0, 1, NULL,
+ FIB_ROUTE_PATH_FLAG_NONE);
+ fib_table_lock (fib_index, FIB_PROTOCOL_IP4, FIB_SOURCE_ADJ);
+}
+
int
vnet_arp_set_ip4_over_ethernet_internal (vnet_main_t * vnm,
vnet_arp_set_ip4_over_ethernet_rpc_args_t
@@ -576,21 +594,9 @@ vnet_arp_set_ip4_over_ethernet_internal (vnet_main_t * vnm,
if (!is_no_fib_entry)
{
- fib_prefix_t pfx = {
- .fp_len = 32,
- .fp_proto = FIB_PROTOCOL_IP4,
- .fp_addr.ip4 = a->ip4,
- };
- u32 fib_index;
-
- fib_index =
- ip4_fib_table_get_index_for_sw_if_index (e->sw_if_index);
- e->fib_entry_index =
- fib_table_entry_path_add (fib_index, &pfx, FIB_SOURCE_ADJ,
- FIB_ENTRY_FLAG_ATTACHED,
- DPO_PROTO_IP4, &pfx.fp_addr,
- e->sw_if_index, ~0, 1, NULL,
- FIB_ROUTE_PATH_FLAG_NONE);
+ arp_adj_fib_add (e,
+ ip4_fib_table_get_index_for_sw_if_index
+ (e->sw_if_index));
}
else
{
@@ -1561,6 +1567,65 @@ arp_add_del_interface_address (ip4_main_t * im,
}
}
+void
+arp_adj_fib_remove (ethernet_arp_ip4_entry_t * e, uint32_t fib_index)
+{
+ if (FIB_NODE_INDEX_INVALID != e->fib_entry_index)
+ {
+ fib_prefix_t pfx = {
+ .fp_len = 32,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ .fp_addr.ip4 = e->ip4_address,
+ };
+ u32 fib_index;
+
+ fib_index = ip4_fib_table_get_index_for_sw_if_index (e->sw_if_index);
+
+ fib_table_entry_path_remove (fib_index, &pfx,
+ FIB_SOURCE_ADJ,
+ DPO_PROTO_IP4,
+ &pfx.fp_addr,
+ e->sw_if_index, ~0, 1,
+ FIB_ROUTE_PATH_FLAG_NONE);
+ fib_table_unlock (fib_index, FIB_PROTOCOL_IP4, FIB_SOURCE_ADJ);
+ }
+}
+
+static void
+arp_table_bind (ip4_main_t * im,
+ uword opaque,
+ u32 sw_if_index, u32 new_fib_index, u32 old_fib_index)
+{
+ ethernet_arp_main_t *am = &ethernet_arp_main;
+ ethernet_arp_interface_t *eai;
+ ethernet_arp_ip4_entry_t *e;
+ hash_pair_t *pair;
+
+ /*
+ * the IP table that the interface is bound to has changed.
+ * reinstall all the adj fibs.
+ */
+
+ if (vec_len (am->ethernet_arp_by_sw_if_index) <= sw_if_index)
+ return;
+
+ eai = &am->ethernet_arp_by_sw_if_index[sw_if_index];
+
+ /* *INDENT-OFF* */
+ hash_foreach_pair (pair, eai->arp_entries,
+ ({
+ e = pool_elt_at_index(am->ip4_entry_pool,
+ pair->value[0]);
+ /*
+ * remove the adj-fib from the old table and add to the new
+ */
+ arp_adj_fib_remove(e, old_fib_index);
+ arp_adj_fib_add(e, new_fib_index);
+ }));
+ /* *INDENT-ON* */
+
+}
+
static clib_error_t *
ethernet_arp_init (vlib_main_t * vm)
{
@@ -1606,6 +1671,11 @@ ethernet_arp_init (vlib_main_t * vm)
cb.function_opaque = 0;
vec_add1 (im->add_del_interface_address_callbacks, cb);
+ ip4_table_bind_callback_t cbt;
+ cbt.function = arp_table_bind;
+ cbt.function_opaque = 0;
+ vec_add1 (im->table_bind_callbacks, cbt);
+
return 0;
}
@@ -1616,24 +1686,9 @@ arp_entry_free (ethernet_arp_interface_t * eai, ethernet_arp_ip4_entry_t * e)
{
ethernet_arp_main_t *am = &ethernet_arp_main;
- if (FIB_NODE_INDEX_INVALID != e->fib_entry_index)
- {
- fib_prefix_t pfx = {
- .fp_len = 32,
- .fp_proto = FIB_PROTOCOL_IP4,
- .fp_addr.ip4 = e->ip4_address,
- };
- u32 fib_index;
-
- fib_index = ip4_fib_table_get_index_for_sw_if_index (e->sw_if_index);
-
- fib_table_entry_path_remove (fib_index, &pfx,
- FIB_SOURCE_ADJ,
- DPO_PROTO_IP4,
- &pfx.fp_addr,
- e->sw_if_index, ~0, 1,
- FIB_ROUTE_PATH_FLAG_NONE);
- }
+ arp_adj_fib_remove (e,
+ ip4_fib_table_get_index_for_sw_if_index
+ (e->sw_if_index));
hash_unset (eai->arp_entries, e->ip4_address.as_u32);
pool_put (am->ip4_entry_pool, e);
}
@@ -1693,7 +1748,11 @@ vnet_arp_flush_ip4_over_ethernet_internal (vnet_main_t * vnm,
* does in response to interface events. unset is only done
* by the control plane.
*/
- if (e->flags & ETHERNET_ARP_IP4_ENTRY_FLAG_DYNAMIC)
+ if (e->flags & ETHERNET_ARP_IP4_ENTRY_FLAG_STATIC)
+ {
+ e->flags &= ETHERNET_ARP_IP4_ENTRY_FLAG_DYNAMIC;
+ }
+ else if (e->flags & ETHERNET_ARP_IP4_ENTRY_FLAG_DYNAMIC)
{
arp_entry_free (eai, e);
}