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authorNeale Ranns <nranns@cisco.com>2019-07-31 02:48:02 -0700
committerNeale Ranns <nranns@cisco.com>2019-07-31 16:17:36 +0000
commit83832e7ced8be8b7de394415feaba70c32e3c38d (patch)
treeb9269e9f5cff694fa39cc26b5c25cb81828e1435 /src/vnet/qos/qos_store_node.c
parentb504777e7f1c9728e65b874284b4dfd39359c8a8 (diff)
qos: Store function
Type: feature store: write a QoS value into the buffer meta-data record: Extract a QoS value from a packet header and store it. mark: Make a change to the content of a packet header by writing a stored QoS value Change-Id: I07d1e87dd1ca90d40ac1ae1774fee1b272cab83f Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/qos/qos_store_node.c')
-rw-r--r--src/vnet/qos/qos_store_node.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/src/vnet/qos/qos_store_node.c b/src/vnet/qos/qos_store_node.c
new file mode 100644
index 00000000000..2273b2eac77
--- /dev/null
+++ b/src/vnet/qos/qos_store_node.c
@@ -0,0 +1,179 @@
+/*
+ * 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.
+ */
+
+#include <vnet/qos/qos_store.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ip/ip6_to_ip4.h>
+#include <vnet/feature/feature.h>
+#include <vnet/qos/qos_types.h>
+
+extern u8 *qos_store_configs[QOS_N_SOURCES];
+
+/**
+ * per-packet trace data
+ */
+typedef struct qos_store_trace_t_
+{
+ /* per-pkt trace data */
+ qos_bits_t bits;
+} qos_store_trace_t;
+
+/* packet trace format function */
+static u8 *
+format_qos_store_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ qos_store_trace_t *t = va_arg (*args, qos_store_trace_t *);
+
+ s = format (s, "qos:%d", t->bits);
+
+ return s;
+}
+
+static inline uword
+qos_store_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame, qos_source_t qos_src)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+
+ next_index = 0;
+ n_left_from = frame->n_vectors;
+ from = vlib_frame_vector_args (frame);
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ vlib_buffer_t *b0;
+ u32 next0, bi0;
+ qos_bits_t qos0;
+
+ next0 = 0;
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+
+ qos0 =
+ *(qos_bits_t *) vnet_feature_next_with_data (&next0, b0,
+ sizeof (qos_bits_t));
+
+ vnet_buffer2 (b0)->qos.bits = qos0;
+ vnet_buffer2 (b0)->qos.source = qos_src;
+ b0->flags |= VNET_BUFFER_F_QOS_DATA_VALID;
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) &&
+ (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ qos_store_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->bits = qos0;
+ }
+
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ return frame->n_vectors;
+}
+
+
+VLIB_NODE_FN (ip4_qos_store_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return (qos_store_inline (vm, node, frame, QOS_SOURCE_IP));
+}
+
+VLIB_NODE_FN (ip6_qos_store_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ return (qos_store_inline (vm, node, frame, QOS_SOURCE_IP));
+}
+
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip4_qos_store_node) = {
+ .name = "ip4-qos-store",
+ .vector_size = sizeof (u32),
+ .format_trace = format_qos_store_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = 0,
+ .n_next_nodes = 1,
+
+ .next_nodes = {
+ [0] = "ip4-drop",
+ },
+};
+
+VNET_FEATURE_INIT (ip4_qos_store_node, static) = {
+ .arc_name = "ip4-unicast",
+ .node_name = "ip4-qos-store",
+};
+VNET_FEATURE_INIT (ip4m_qos_store_node, static) = {
+ .arc_name = "ip4-multicast",
+ .node_name = "ip4-qos-store",
+};
+
+VLIB_REGISTER_NODE (ip6_qos_store_node) = {
+ .name = "ip6-qos-store",
+ .vector_size = sizeof (u32),
+ .format_trace = format_qos_store_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = 0,
+ .n_next_nodes = 1,
+
+ .next_nodes = {
+ [0] = "ip6-drop",
+ },
+};
+
+VNET_FEATURE_INIT (ip6_qos_store_node, static) = {
+ .arc_name = "ip6-unicast",
+ .node_name = "ip6-qos-store",
+};
+VNET_FEATURE_INIT (ip6m_qos_store_node, static) = {
+ .arc_name = "ip6-multicast",
+ .node_name = "ip6-qos-store",
+};
+
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */