QoS recording and marking

Change-Id: Ie5a50def4ec1e4a3b3404a8b6ab9ec248bc16744
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 82 insertions, 0 deletions

diff --git a/src/vnet/qos/qos_egress_map.h b/src/vnet/qos/qos_egress_map.h
new file mode 100644
index 00000000000..f4b282cb7ba
--- /dev/null
+++ b/src/vnet/qos/qos_egress_map.h
@@ -0,0 +1,82 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2018 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.
+ *------------------------------------------------------------------
+ */
+
+/**
+ * A QOS egress map translates from the COS bits stored in the packet's
+ * meta-data into a per-protocol COS value
+ */
+
+#ifndef __QOS_EGRESS_MAP_H__
+#define __QOS_EGRESS_MAP_H__
+
+#include <vnet/qos/qos_types.h>
+#include <vnet/dpo/dpo.h>
+
+/**
+ * An attempt at type safety
+ */
+typedef u32 qos_egress_map_id_t;
+
+/**
+ * For a given output source a table maps each value of every input sorce.
+ */
+typedef struct qos_egress_map_t_
+{
+    /**
+     * The array of output mapped values;
+     *   output = eq_qos[input-source][input-value]
+     */
+  qos_bits_t qem_output[QOS_N_SOURCES][256];
+} qos_egress_map_t;
+
+extern u8 *format_qos_egress_map (u8 * s, va_list * args);
+
+/**
+ * Add a qos-egress map to an interface. If sw_if_index = ~0
+ * then the configuration is for the 'default' table.
+ * If the table is ~0, this is a removal.
+ * the egress mapping is applied. For example, is output is MPLS then
+ * the QoS markings will occur for MPLS pakcets.
+ */
+extern void qos_egress_map_update (qos_egress_map_id_t tid,
+				   qos_source_t input_source,
+				   qos_bits_t * values);
+extern void qos_egress_map_delete (qos_egress_map_id_t tid);
+
+/**
+ * Get the VPP QoS map index from the user's map-ID
+ */
+extern index_t qos_egress_map_find (qos_egress_map_id_t tid);
+
+/**
+ * Data-plane functions
+ */
+
+/**
+ * Pool from which to allocate map
+ */
+extern qos_egress_map_t *qem_pool;
+
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */