u8 is_ipv6 = vrrp_vr_is_ipv6 (vr);
u32 *vr_index;
int n_master_accept = 0;
-
- /* only need to do something if entering or leaving master state */
- if ((vr->runtime.state != VRRP_VR_STATE_MASTER) &&
- (new_state != VRRP_VR_STATE_MASTER))
- return;
+ int n_started = 0;
if (is_ipv6)
{
intf = vrrp_intf_get (vr->config.sw_if_index);
- if (new_state == VRRP_VR_STATE_MASTER)
- {
- intf->n_master_vrs[is_ipv6]++;
- if (intf->n_master_vrs[is_ipv6] == 1)
- vnet_feature_enable_disable (arc_name, node_name,
- vr->config.sw_if_index, 1, NULL, 0);
- }
- else
- {
- if (intf->n_master_vrs[is_ipv6] == 1)
- vnet_feature_enable_disable (arc_name, node_name,
- vr->config.sw_if_index, 0, NULL, 0);
- /* If the count were already 0, leave it at 0 */
- if (intf->n_master_vrs[is_ipv6])
- intf->n_master_vrs[is_ipv6]--;
- }
+ /* Check other VRs on this intf to see if features need to be toggled */
+ vec_foreach (vr_index, intf->vr_indices[is_ipv6])
+ {
+ vrrp_vr_t *intf_vr = vrrp_vr_lookup_index (*vr_index);
- /* accept mode enabled, count the other master VRs w/ accept mode on intf */
- if (vrrp_vr_accept_mode_enabled (vr))
- {
- vec_foreach (vr_index, intf->vr_indices[is_ipv6])
- {
- vrrp_vr_t *intf_vr = vrrp_vr_lookup_index (*vr_index);
+ if (intf_vr == vr)
+ continue;
- if (intf_vr == vr)
- continue;
+ if (intf_vr->runtime.state == VRRP_VR_STATE_INIT)
+ continue;
- if (vrrp_vr_accept_mode_enabled (intf_vr) &&
- (intf_vr->runtime.state == VRRP_VR_STATE_MASTER))
- n_master_accept++;
- }
+ n_started++;
+
+ if ((intf_vr->runtime.state == VRRP_VR_STATE_MASTER) &&
+ vrrp_vr_accept_mode_enabled (intf_vr))
+ n_master_accept++;
+ }
+
+ /* If entering/leaving init state, start/stop ARP or ND feature if no other
+ * VRs are active on the interface.
+ */
+ if (((vr->runtime.state == VRRP_VR_STATE_INIT) ||
+ (new_state == VRRP_VR_STATE_INIT)) && (n_started == 0))
+ vnet_feature_enable_disable (arc_name, node_name,
+ vr->config.sw_if_index,
+ (new_state != VRRP_VR_STATE_INIT), NULL, 0);
+
+ /* Special housekeeping when entering/leaving master mode */
+ if ((vr->runtime.state == VRRP_VR_STATE_MASTER) ||
+ (new_state == VRRP_VR_STATE_MASTER))
+ {
+ /* Maintain count of master state VRs on interface */
+ if (new_state == VRRP_VR_STATE_MASTER)
+ intf->n_master_vrs[is_ipv6]++;
+ else if (intf->n_master_vrs[is_ipv6] > 0)
+ intf->n_master_vrs[is_ipv6]--;
- /* If no others, enable or disable the feature based on new state */
- if (!n_master_accept)
+ /* If accept mode is enabled and no other master on intf has accept
+ * mode enabled, enable/disable feature node to avoid spurious drops by
+ * spoofing check.
+ */
+ if (vrrp_vr_accept_mode_enabled (vr) && !n_master_accept)
vnet_feature_enable_disable (mc_arc_name, mc_node_name,
vr->config.sw_if_index,
(new_state == VRRP_VR_STATE_MASTER),
NULL, 0);
}
-
}
/* If accept mode enabled, add/remove VR addresses from interface */
vrrp_intf_enable_disable_mcast (u8 enable, u32 sw_if_index, u8 is_ipv6)
{
vrrp_main_t *vrm = &vrrp_main;
+ vrrp_vr_t *vr;
vrrp_intf_t *intf;
u32 fib_index;
+ u32 n_vrs = 0;
const mfib_prefix_t *vrrp_prefix;
fib_protocol_t proto;
vnet_link_t link_type;
via_itf.frp_proto = fib_proto_to_dpo (proto);
fib_index = mfib_table_get_index_for_sw_if_index (proto, sw_if_index);
+ /* *INDENT-OFF* */
+ pool_foreach (vr, vrm->vrs,
+ ({
+ if (vrrp_vr_is_ipv6 (vr) == is_ipv6)
+ n_vrs++;
+ }));
+ /* *INDENT-ON* */
+
if (enable)
{
- if (pool_elts (vrm->vrs) == 1)
+ /* If this is the first VR configured, add the local mcast routes */
+ if (n_vrs == 1)
mfib_table_entry_path_update (fib_index, vrrp_prefix, MFIB_SOURCE_API,
&for_us);
}
else
{
- if (pool_elts (vrm->vrs) == 0)
+ /* Remove mcast local routes if this is the last VR being deleted */
+ if (n_vrs == 0)
mfib_table_entry_path_remove (fib_index, vrrp_prefix, MFIB_SOURCE_API,
&for_us);