linux-cp: Only enable/disable the punt feature on the 0<->1 transition
Type: fix
otherwise the feature is enabled n times for n lcp-pairs and the packets go n times through the feature.
@@ -308,10 +308,13 @@ lcp_itf_pair_add (u32 host_sw_if_index, u32 phy_sw_if_index, u8 *host_name,
}
else
{
- vnet_feature_enable_disable ("ip4-punt", "linux-cp-punt-l3", 0, 1, NULL,
- 0);
- vnet_feature_enable_disable ("ip6-punt", "linux-cp-punt-l3", 0, 1, NULL,
- 0);
+ if (hash_elts (lip_db_by_vif) == 1)
+ {
+ vnet_feature_enable_disable ("ip4-punt", "linux-cp-punt-l3", 0, 1,
+ NULL, 0);
+ vnet_feature_enable_disable ("ip6-punt", "linux-cp-punt-l3", 0, 1,
+ NULL, 0);
+ }
}
/* invoke registered callbacks for pair addition */
@@ -435,12 +438,14 @@ lcp_itf_pair_del (u32 phy_sw_if_index)
}
else
{
- vnet_feature_enable_disable ("ip4-punt", "linux-cp-punt-l3", 0, 0, NULL,
- 0);
- vnet_feature_enable_disable ("ip6-punt", "linux-cp-punt-l3", 0, 0, NULL,
- 0);
+ if (hash_elts (lip_db_by_vif) == 1)
+ {
+ vnet_feature_enable_disable ("ip4-punt", "linux-cp-punt-l3", 0, 0,
+ NULL, 0);
+ vnet_feature_enable_disable ("ip6-punt", "linux-cp-punt-l3", 0, 0,
+ NULL, 0);
+ }
}
-
lip_db_by_phy[phy_sw_if_index] = INDEX_INVALID;
lip_db_by_host[lip->lip_host_sw_if_index] = INDEX_INVALID;
hash_unset (lip_db_by_vif, lip->lip_vif_index);
