interface: rx queue infra rework, part one

Type: improvement
Change-Id: I4008cadfd5141f921afbdc09a3ebcd1dcf88eb29
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 99 insertions, 0 deletions

diff --git a/src/vnet/interface/rx_queue_funcs.h b/src/vnet/interface/rx_queue_funcs.h
new file mode 100644
index 00000000000..08d717bb68c
--- /dev/null
+++ b/src/vnet/interface/rx_queue_funcs.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2020 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/vnet.h>
+
+/* funciton declarations */
+
+u32 vnet_hw_if_get_rx_queue_index_by_id (vnet_main_t *vnm, u32 hw_if_index,
+					 u32 queue_id);
+u32 vnet_hw_if_register_rx_queue (vnet_main_t *vnm, u32 hw_if_index,
+				  u32 queue_id, u32 thread_idnex);
+void vnet_hw_if_unregister_rx_queue (vnet_main_t *vnm, u32 queue_index);
+void vnet_hw_if_unregister_all_rx_queues (vnet_main_t *vnm, u32 hw_if_index);
+void vnet_hw_if_set_rx_queue_file_index (vnet_main_t *vnm, u32 queue_index,
+					 u32 file_index);
+void vnet_hw_if_set_input_node (vnet_main_t *vnm, u32 hw_if_index,
+				u32 node_index);
+int vnet_hw_if_set_rx_queue_mode (vnet_main_t *vnm, u32 queue_index,
+				  vnet_hw_if_rx_mode mode);
+vnet_hw_if_rx_mode vnet_hw_if_get_rx_queue_mode (vnet_main_t *vnm,
+						 u32 queue_index);
+void vnet_hw_if_set_rx_queue_thread_index (vnet_main_t *vnm, u32 queue_index,
+					   u32 thread_index);
+void vnet_hw_if_update_runtime_data (vnet_main_t *vnm, u32 hw_if_index);
+void vnet_hw_if_generate_rxq_int_poll_vector (vlib_main_t *vm,
+					      vlib_node_runtime_t *node);
+
+/* inline functions */
+
+static_always_inline vnet_hw_if_rx_queue_t *
+vnet_hw_if_get_rx_queue (vnet_main_t *vnm, u32 queue_index)
+{
+  vnet_interface_main_t *im = &vnm->interface_main;
+  if (pool_is_free_index (im->hw_if_rx_queues, queue_index))
+    return 0;
+  return pool_elt_at_index (im->hw_if_rx_queues, queue_index);
+}
+
+static_always_inline void
+vnet_hw_if_rx_queue_set_int_pending (vnet_main_t *vnm, u32 queue_index)
+{
+  vnet_hw_if_rx_queue_t *rxq = vnet_hw_if_get_rx_queue (vnm, queue_index);
+  vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, rxq->hw_if_index);
+  vlib_main_t *vm = vlib_mains[rxq->thread_index];
+
+  vnet_hw_if_rx_node_runtime_t *rt;
+  rt = vlib_node_get_runtime_data (vm, hi->input_node_index);
+  if (vm == vlib_get_main ())
+    clib_interrupt_set (rt->rxq_interrupts, queue_index);
+  else
+    clib_interrupt_set_atomic (rt->rxq_interrupts, queue_index);
+  vlib_node_set_interrupt_pending (vm, hi->input_node_index);
+}
+
+static_always_inline vnet_hw_if_rxq_poll_vector_t *
+vnet_hw_if_get_rxq_poll_vector (vlib_main_t *vm, vlib_node_runtime_t *node)
+{
+  vnet_hw_if_rx_node_runtime_t *rt = (void *) node->runtime_data;
+
+  if (PREDICT_FALSE (node->state == VLIB_NODE_STATE_INTERRUPT))
+    vnet_hw_if_generate_rxq_int_poll_vector (vm, node);
+
+  return rt->rxq_poll_vector;
+}
+
+static_always_inline u8
+vnet_hw_if_get_rx_queue_numa_node (vnet_main_t *vnm, u32 queue_index)
+{
+  vnet_hw_if_rx_queue_t *rxq = vnet_hw_if_get_rx_queue (vnm, queue_index);
+  vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, rxq->hw_if_index);
+  return hi->numa_node;
+}
+
+static_always_inline u32
+vnet_hw_if_get_rx_queue_thread_index (vnet_main_t *vnm, u32 queue_index)
+{
+  vnet_hw_if_rx_queue_t *rxq = vnet_hw_if_get_rx_queue (vnm, queue_index);
+  return rxq->thread_index;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */