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-rw-r--r--src/vnet/dpo/drop_dpo.c106
1 files changed, 106 insertions, 0 deletions
diff --git a/src/vnet/dpo/drop_dpo.c b/src/vnet/dpo/drop_dpo.c
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+++ b/src/vnet/dpo/drop_dpo.c
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+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * @brief
+ * The data-path object representing dropping the packet
+ */
+
+#include <vnet/dpo/dpo.h>
+
+static dpo_id_t drop_dpos[DPO_PROTO_NUM];
+
+const dpo_id_t *
+drop_dpo_get (dpo_proto_t proto)
+{
+ dpo_set(&drop_dpos[proto], DPO_DROP, proto, proto);
+
+ return (&drop_dpos[proto]);
+}
+
+int
+dpo_is_drop (const dpo_id_t *dpo)
+{
+ return (dpo->dpoi_type == DPO_DROP);
+}
+
+static void
+drop_dpo_lock (dpo_id_t *dpo)
+{
+ /*
+ * not maintaining a lock count on the drop
+ * more trouble than it's worth.
+ * There always needs to be one around. no point it managaing its lifetime
+ */
+}
+static void
+drop_dpo_unlock (dpo_id_t *dpo)
+{
+}
+
+static u8*
+format_drop_dpo (u8 *s, va_list *ap)
+{
+ CLIB_UNUSED(index_t index) = va_arg(*ap, index_t);
+ CLIB_UNUSED(u32 indent) = va_arg(*ap, u32);
+
+ return (format(s, "dpo-drop %U", format_dpo_proto, index));
+}
+
+const static dpo_vft_t drop_vft = {
+ .dv_lock = drop_dpo_lock,
+ .dv_unlock = drop_dpo_unlock,
+ .dv_format = format_drop_dpo,
+};
+
+/**
+ * @brief The per-protocol VLIB graph nodes that are assigned to a drop
+ * object.
+ *
+ * this means that these graph nodes are ones from which a drop is the
+ * parent object in the DPO-graph.
+ */
+const static char* const drop_ip4_nodes[] =
+{
+ "ip4-drop",
+ NULL,
+};
+const static char* const drop_ip6_nodes[] =
+{
+ "ip6-drop",
+ NULL,
+};
+const static char* const drop_mpls_nodes[] =
+{
+ "mpls-drop",
+ NULL,
+};
+const static char* const drop_ethernet_nodes[] =
+{
+ "error-drop",
+ NULL,
+};
+const static char* const * const drop_nodes[DPO_PROTO_NUM] =
+{
+ [DPO_PROTO_IP4] = drop_ip4_nodes,
+ [DPO_PROTO_IP6] = drop_ip6_nodes,
+ [DPO_PROTO_MPLS] = drop_mpls_nodes,
+ [DPO_PROTO_ETHERNET] = drop_ethernet_nodes,
+};
+
+void
+drop_dpo_module_init (void)
+{
+ dpo_register(DPO_DROP, &drop_vft, drop_nodes);
+}