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<?xml version="1.0" encoding="UTF-8"?>
<!--
 Copyright (c) 2015 Intel 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.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <parent>
    <groupId>io.fd.honeycomb.common</groupId>
    <artifactId>honeycomb-parent</artifactId>
    <version>1.17.01-SNAPSHOT</version>
  </parent>

  <groupId>io.fd.hc2vpp.nsh</groupId>
  <artifactId>vppnsh-aggregator</artifactId>
  <version>1.17.01-SNAPSHOT</version>
  <name>${project.artifactId}</name>
  <packaging>pom</packaging>
  <modelVersion>4.0.0</modelVersion>
  <description>Aggregator for Honeycomb NSH_SFC plugin</description>

  <modules>
    <module>api</module>
    <module>impl</module>
  </modules>
  <!-- DO NOT install or deploy the repo root pom as it's only needed to initiate a build -->
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-deploy-plugin</artifactId>
        <configuration>
          <skip>true</skip>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-install-plugin</artifactId>
        <configuration>
          <skip>true</skip>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>
back */ .highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */ .highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */ .highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */ .highlight .kp { color: #008800 } /* Keyword.Pseudo */ .highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */ .highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */ .highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */ .highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */ .highlight .na { color: #336699 } /* Name.Attribute */ .highlight .nb { color: #003388 } /* Name.Builtin */ .highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */ .highlight .no { color: #003366; font-weight: bold } /* Name.Constant */ .highlight .nd { color: #555555 } /* Name.Decorator */ .highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */ .highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */ }
/*
 * Copyright (c) 2015 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>
#include <vnet/devices/devices.h>
#include <vnet/feature/feature.h>
#include <vnet/ip/ip.h>
#include <vnet/ethernet/ethernet.h>

vnet_device_main_t vnet_device_main;

static uword
device_input_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
		 vlib_frame_t * frame)
{
  return 0;
}

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (device_input_node) = {
  .function = device_input_fn,
  .name = "device-input",
  .runtime_data_bytes = sizeof (vnet_device_input_runtime_t),
  .type = VLIB_NODE_TYPE_INPUT,
  .state = VLIB_NODE_STATE_DISABLED,
  .n_next_nodes = VNET_DEVICE_INPUT_N_NEXT_NODES,
  .next_nodes = VNET_DEVICE_INPUT_NEXT_NODES,
};

/* Table defines how much we need to advance current data pointer
   in the buffer if we shortcut to l3 nodes */

const u32 __attribute__((aligned (CLIB_CACHE_LINE_BYTES)))
device_input_next_node_advance[((VNET_DEVICE_INPUT_N_NEXT_NODES /
				CLIB_CACHE_LINE_BYTES) +1) * CLIB_CACHE_LINE_BYTES] =
{
      [VNET_DEVICE_INPUT_NEXT_IP4_INPUT] = sizeof (ethernet_header_t),
      [VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT] = sizeof (ethernet_header_t),
      [VNET_DEVICE_INPUT_NEXT_IP6_INPUT] = sizeof (ethernet_header_t),
      [VNET_DEVICE_INPUT_NEXT_MPLS_INPUT] = sizeof (ethernet_header_t),
};

VNET_FEATURE_ARC_INIT (device_input, static) =
{
  .arc_name  = "device-input",
  .start_nodes = VNET_FEATURES ("device-input"),
  .arc_index_ptr = &feature_main.device_input_feature_arc_index,
};

VNET_FEATURE_INIT (l2_patch, static) = {
  .arc_name = "device-input",
  .node_name = "l2-patch",
  .runs_before = VNET_FEATURES ("ethernet-input"),
};

VNET_FEATURE_INIT (worker_handoff, static) = {
  .arc_name = "device-input",
  .node_name = "worker-handoff",
  .runs_before = VNET_FEATURES ("ethernet-input"),
};

VNET_FEATURE_INIT (span_input, static) = {
  .arc_name = "device-input",
  .node_name = "span-input",
  .runs_before = VNET_FEATURES ("ethernet-input"),
};

VNET_FEATURE_INIT (ethernet_input, static) = {
  .arc_name = "device-input",
  .node_name = "ethernet-input",
  .runs_before = 0, /* not before any other features */
};
/* *INDENT-ON* */

static int
vnet_device_queue_sort (void *a1, void *a2)
{
  vnet_device_and_queue_t *dq1 = a1;
  vnet_device_and_queue_t *dq2 = a2;

  if (dq1->dev_instance > dq2->dev_instance)
    return 1;
  else if (dq1->dev_instance < dq2->dev_instance)
    return -1;
  else if (dq1->queue_id > dq2->queue_id)
    return 1;
  else if (dq1->queue_id < dq2->queue_id)
    return -1;
  else
    return 0;
}

static void
vnet_device_queue_update (vnet_main_t * vnm, vnet_device_input_runtime_t * rt)
{
  vnet_device_and_queue_t *dq;
  vnet_hw_interface_t *hw;

  vec_sort_with_function (rt->devices_and_queues, vnet_device_queue_sort);

  vec_foreach (dq, rt->devices_and_queues)
  {
    hw = vnet_get_hw_interface (vnm, dq->hw_if_index);
    vec_validate (hw->dq_runtime_index_by_queue, dq->queue_id);
    hw->dq_runtime_index_by_queue[dq->queue_id] = dq - rt->devices_and_queues;
  }
}

void
vnet_hw_interface_assign_rx_thread (vnet_main_t * vnm, u32 hw_if_index,
				    u16 queue_id, uword thread_index)
{
  vnet_device_main_t *vdm = &vnet_device_main;
  vlib_main_t *vm;
  vnet_device_input_runtime_t *rt;
  vnet_device_and_queue_t *dq;
  vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);

  ASSERT (hw->input_node_index > 0);

  if (vdm->first_worker_thread_index == 0)
    thread_index = 0;

  if (thread_index != 0 &&
      (thread_index < vdm->first_worker_thread_index ||
       thread_index > vdm->last_worker_thread_index))
    {
      thread_index = vdm->next_worker_thread_index++;
      if (vdm->next_worker_thread_index > vdm->last_worker_thread_index)
	vdm->next_worker_thread_index = vdm->first_worker_thread_index;
    }

  vm = vlib_mains[thread_index];
  rt = vlib_node_get_runtime_data (vm, hw->input_node_index);

  vec_add2 (rt->devices_and_queues, dq, 1);
  dq->hw_if_index = hw_if_index;
  dq->dev_instance = hw->dev_instance;
  dq->queue_id = queue_id;
  dq->mode = VNET_HW_INTERFACE_RX_MODE_POLLING;
  rt->enabled_node_state = VLIB_NODE_STATE_POLLING;

  vnet_device_queue_update (vnm, rt);
  vec_validate (hw->input_node_thread_index_by_queue, queue_id);
  vec_validate (hw->rx_mode_by_queue, queue_id);
  hw->input_node_thread_index_by_queue[queue_id] = thread_index;
  hw->rx_mode_by_queue[queue_id] = VNET_HW_INTERFACE_RX_MODE_POLLING;
  vlib_node_set_state (vm, hw->input_node_index, rt->enabled_node_state);
}

int
vnet_hw_interface_unassign_rx_thread (vnet_main_t * vnm, u32 hw_if_index,
				      u16 queue_id)
{
  vlib_main_t *vm;
  vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
  vnet_device_input_runtime_t *rt;
  vnet_device_and_queue_t *dq;
  uword old_thread_index;
  vnet_hw_interface_rx_mode mode;

  if (hw->input_node_thread_index_by_queue == 0)
    return VNET_API_ERROR_INVALID_INTERFACE;

  if (vec_len (hw->input_node_thread_index_by_queue) < queue_id + 1)
    return VNET_API_ERROR_INVALID_INTERFACE;

  old_thread_index = hw->input_node_thread_index_by_queue[queue_id];

  vm = vlib_mains[old_thread_index];

  rt = vlib_node_get_runtime_data (vm, hw->input_node_index);

  vec_foreach (dq, rt->devices_and_queues)
    if (dq->hw_if_index == hw_if_index && dq->queue_id == queue_id)
    {
      mode = dq->mode;
      vec_del1 (rt->devices_and_queues, dq - rt->devices_and_queues);
      goto deleted;
    }

  return VNET_API_ERROR_INVALID_INTERFACE;

deleted:

  vnet_device_queue_update (vnm, rt);
  hw->rx_mode_by_queue[queue_id] = VNET_HW_INTERFACE_RX_MODE_UNKNOWN;

  if (vec_len (rt->devices_and_queues) == 0)
    vlib_node_set_state (vm, hw->input_node_index, VLIB_NODE_STATE_DISABLED);
  else if (mode == VNET_HW_INTERFACE_RX_MODE_POLLING)
    {
      /*
       * if the deleted interface is polling, we may need to set the node state
       * to interrupt if there is no more polling interface for this device's
       * corresponding thread. This is because mixed interfaces
       * (polling and interrupt), assigned to the same thread, set the
       * thread to polling prior to the deletion.
       */
      vec_foreach (dq, rt->devices_and_queues)
      {
	if (dq->mode == VNET_HW_INTERFACE_RX_MODE_POLLING)
	  return 0;
      }
      rt->enabled_node_state = VLIB_NODE_STATE_INTERRUPT;
      vlib_node_set_state (vm, hw->input_node_index, rt->enabled_node_state);
    }

  return 0;
}


int
vnet_hw_interface_set_rx_mode (vnet_main_t * vnm, u32 hw_if_index,
			       u16 queue_id, vnet_hw_interface_rx_mode mode)
{
  vlib_main_t *vm;
  uword thread_index;
  vnet_device_and_queue_t *dq;
  vlib_node_state_t enabled_node_state;
  ASSERT (mode < VNET_HW_INTERFACE_NUM_RX_MODES);
  vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
  vnet_device_input_runtime_t *rt;
  int is_polling = 0;

  if (hw->input_node_thread_index_by_queue == 0 || hw->rx_mode_by_queue == 0)
    return VNET_API_ERROR_INVALID_INTERFACE;

  if (hw->rx_mode_by_queue[queue_id] == mode)
    return 0;

  if (mode != VNET_HW_INTERFACE_RX_MODE_POLLING &&
      (hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE) == 0)
    return VNET_API_ERROR_UNSUPPORTED;

  hw->rx_mode_by_queue[queue_id] = mode;
  thread_index = hw->input_node_thread_index_by_queue[queue_id];
  vm = vlib_mains[thread_index];

  rt = vlib_node_get_runtime_data (vm, hw->input_node_index);

  vec_foreach (dq, rt->devices_and_queues)
  {
    if (dq->hw_if_index == hw_if_index && dq->queue_id == queue_id)
      dq->mode = mode;
    if (dq->mode == VNET_HW_INTERFACE_RX_MODE_POLLING)
      is_polling = 1;
  }

  if (is_polling)
    enabled_node_state = VLIB_NODE_STATE_POLLING;
  else
    enabled_node_state = VLIB_NODE_STATE_INTERRUPT;

  if (rt->enabled_node_state != enabled_node_state)
    {
      rt->enabled_node_state = enabled_node_state;
      if (vlib_node_get_state (vm, hw->input_node_index) !=
	  VLIB_NODE_STATE_DISABLED)
	vlib_node_set_state (vm, hw->input_node_index, enabled_node_state);
    }

  return 0;
}

int
vnet_hw_interface_get_rx_mode (vnet_main_t * vnm, u32 hw_if_index,
			       u16 queue_id, vnet_hw_interface_rx_mode * mode)
{
  vlib_main_t *vm;
  uword thread_index;
  vnet_device_and_queue_t *dq;
  vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index);
  vnet_device_input_runtime_t *rt;

  if (hw->input_node_thread_index_by_queue == 0)
    return VNET_API_ERROR_INVALID_INTERFACE;

  thread_index = hw->input_node_thread_index_by_queue[queue_id];
  vm = vlib_mains[thread_index];

  rt = vlib_node_get_runtime_data (vm, hw->input_node_index);

  vec_foreach (dq, rt->devices_and_queues)
    if (dq->hw_if_index == hw_if_index && dq->queue_id == queue_id)
    {
      *mode = dq->mode;
      return 0;
    }

  return VNET_API_ERROR_INVALID_INTERFACE;
}



static clib_error_t *
vnet_device_init (vlib_main_t * vm)
{
  vnet_device_main_t *vdm = &vnet_device_main;
  vlib_thread_main_t *tm = vlib_get_thread_main ();
  vlib_thread_registration_t *tr;
  uword *p;

  vec_validate_aligned (vdm->workers, tm->n_vlib_mains - 1,
			CLIB_CACHE_LINE_BYTES);

  p = hash_get_mem (tm->thread_registrations_by_name, "workers");
  tr = p ? (vlib_thread_registration_t *) p[0] : 0;
  if (tr && tr->count > 0)
    {
      vdm->first_worker_thread_index = tr->first_index;
      vdm->next_worker_thread_index = tr->first_index;
      vdm->last_worker_thread_index = tr->first_index + tr->count - 1;
    }
  return 0;
}

VLIB_INIT_FUNCTION (vnet_device_init);

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */