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authorNeale Ranns <nranns@cisco.com>2017-08-12 02:12:00 -0700
committerNeale Ranns <nranns@cisco.com>2017-08-21 04:07:00 -0700
commit43161a873375ddf156cf6fbe8764bfc206b38fa0 (patch)
tree939e5455aaff68341d387b559f743dc049b03377 /src/vnet/dpo/interface_tx_dpo.h
parent352829f538783afe8609f09850f45536a4779b70 (diff)
PPPoE usses a midchain adjacency stack on an interface-tx DPO
1) introduce an interface-tx DPO. This is a simple wrapper around a sw_if_index. enhance DPO stacking functions to allow per-instance next-nodes and hence allow children to stack onto the interface per-instance tx node and not on 'interface-output'. 2) update PPPoE code to use ta midchain stack on a interface-tx DPO of the encap-interface. This remove the need for pppoe_encap node (which is replaced by the adj-midchain-tx) and interface-output node is no longer used (see above). Since PPPoE encap node is no longer needed, the PPPoE seesion does not need to be retrieved in the data-path, hence the cahce misses are removed. Change-Id: Id8b40f53daa14889a9c51d802e14fed7fba4399a Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/dpo/interface_tx_dpo.h')
-rw-r--r--src/vnet/dpo/interface_tx_dpo.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/vnet/dpo/interface_tx_dpo.h b/src/vnet/dpo/interface_tx_dpo.h
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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 transmitting the packet on a n interface.
+ * This is a convenient DPO wrapper around a simple interface transmit and thus
+ * allows us to represent direct interface transmit in the DPO model.
+ */
+
+#ifndef __INTERFACE_TX_DPO_H__
+#define __INTERFACE_TX_DPO_H__
+
+#include <vnet/dpo/dpo.h>
+
+extern void interface_tx_dpo_add_or_lock (dpo_proto_t proto,
+ u32 sw_if_index,
+ dpo_id_t *dpo);
+
+extern void interface_tx_dpo_module_init(void);
+
+#endif