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<?xml version="1.0" encoding="UTF-8"?>
<!--
  ~ Copyright (c) 2017 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.
  -->

<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.hc2vpp.common</groupId>
        <artifactId>vpp-impl-parent</artifactId>
        <version>1.18.04-SNAPSHOT</version>
        <relativePath>../../vpp-common/vpp-impl-parent</relativePath>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>io.fd.hc2vpp.l3</groupId>
    <artifactId>l3-utils</artifactId>
    <name>${project.artifactId}</name>
    <version>1.18.04-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>io.fd.hc2vpp.l3</groupId>
            <artifactId>l3-api</artifactId>
            <version>${project.version}</version>
        </dependency>

        <!-- TODO - HC2VPP-100 - for building subinterface keys,etc,change to interface/subinterface api after split -->
        <dependency>
            <groupId>io.fd.hc2vpp.v3po</groupId>
            <artifactId>v3po-api</artifactId>
            <version>${project.version}</version>
        </dependency>

        <dependency>
            <groupId>io.fd.vpp</groupId>
            <artifactId>jvpp-core</artifactId>
        </dependency>

        <dependency>
            <groupId>io.fd.honeycomb</groupId>
            <artifactId>translate-utils</artifactId>
        </dependency>
        <dependency>
            <groupId>io.fd.hc2vpp.common</groupId>
            <artifactId>vpp-translate-utils</artifactId>
        </dependency>

        <!-- TODO - HC2VPP-100 - sub-interface utils,change to interface/subinterface api after split-->
        <dependency>
            <groupId>io.fd.hc2vpp.v3po</groupId>
            <artifactId>v3po2vpp</artifactId>
            <version>${project.version}</version>
        </dependency>
    </dependencies>
</project>
='#n500'>500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593
/*
 * 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.
 */

#include <lb/lb.h>
#include <lb/util.h>

static clib_error_t *
lb_vip_command_fn (vlib_main_t * vm,
              unformat_input_t * input, vlib_cli_command_t * cmd)
{
  unformat_input_t _line_input, *line_input = &_line_input;
  lb_vip_add_args_t args;
  u8 del = 0;
  int ret;
  u32 port = 0;
  u32 encap = 0;
  u32 dscp = ~0;
  u32 srv_type = LB_SRV_TYPE_CLUSTERIP;
  u32 target_port = 0;
  clib_error_t *error = 0;

  args.new_length = 1024;

  if (!unformat_user (input, unformat_line_input, line_input))
    return 0;

  if (!unformat(line_input, "%U", unformat_ip46_prefix, &(args.prefix),
                &(args.plen), IP46_TYPE_ANY, &(args.plen))) {
    error = clib_error_return (0, "invalid vip prefix: '%U'",
                               format_unformat_error, line_input);
    goto done;
  }

  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
  {
    if (unformat(line_input, "new_len %d", &(args.new_length)))
      ;
    else if (unformat(line_input, "del"))
      del = 1;
    else if (unformat(line_input, "protocol tcp"))
      {
        args.protocol = (u8)IP_PROTOCOL_TCP;
      }
    else if (unformat(line_input, "protocol udp"))
      {
        args.protocol = (u8)IP_PROTOCOL_UDP;
      }
    else if (unformat(line_input, "port %d", &port))
      ;
    else if (unformat(line_input, "encap gre4"))
      encap = LB_ENCAP_TYPE_GRE4;
    else if (unformat(line_input, "encap gre6"))
      encap = LB_ENCAP_TYPE_GRE6;
    else if (unformat(line_input, "encap l3dsr"))
      encap = LB_ENCAP_TYPE_L3DSR;
    else if (unformat(line_input, "encap nat4"))
      encap = LB_ENCAP_TYPE_NAT4;
    else if (unformat(line_input, "encap nat6"))
      encap = LB_ENCAP_TYPE_NAT6;
    else if (unformat(line_input, "dscp %d", &dscp))
      ;
    else if (unformat(line_input, "type clusterip"))
      srv_type = LB_SRV_TYPE_CLUSTERIP;
    else if (unformat(line_input, "type nodeport"))
      srv_type = LB_SRV_TYPE_NODEPORT;
    else if (unformat(line_input, "target_port %d", &target_port))
      ;
    else {
      error = clib_error_return (0, "parse error: '%U'",
                                format_unformat_error, line_input);
      goto done;
    }
  }

  /* if port == 0, it means all-port VIP */
  if (port == 0)
    {
      args.protocol = ~0;
      args.port = 0;
    }
  else
    {
      args.port = (u16)port;
    }

  if ((encap != LB_ENCAP_TYPE_L3DSR) && (dscp != ~0))
    {
      error = clib_error_return(0, "lb_vip_add error: "
                                "should not configure dscp for none L3DSR.");
      goto done;
    }

  if ((encap == LB_ENCAP_TYPE_L3DSR) && (dscp >= 64))
    {
      error = clib_error_return(0, "lb_vip_add error: "
                                "dscp for L3DSR should be less than 64.");
      goto done;
    }

  if (ip46_prefix_is_ip4(&(args.prefix), (args.plen)))
    {
      if (encap == LB_ENCAP_TYPE_GRE4)
        args.type = LB_VIP_TYPE_IP4_GRE4;
      else if (encap == LB_ENCAP_TYPE_GRE6)
        args.type = LB_VIP_TYPE_IP4_GRE6;
      else if (encap == LB_ENCAP_TYPE_L3DSR)
        args.type = LB_VIP_TYPE_IP4_L3DSR;
      else if (encap == LB_ENCAP_TYPE_NAT4)
        args.type = LB_VIP_TYPE_IP4_NAT4;
      else if (encap == LB_ENCAP_TYPE_NAT6)
        {
          error = clib_error_return(0, "currently does not support NAT46");
          goto done;
        }
    }
  else
    {
      if (encap == LB_ENCAP_TYPE_GRE4)
        args.type = LB_VIP_TYPE_IP6_GRE4;
      else if (encap == LB_ENCAP_TYPE_GRE6)
        args.type = LB_VIP_TYPE_IP6_GRE6;
      else if (encap == LB_ENCAP_TYPE_NAT6)
        args.type = LB_VIP_TYPE_IP6_NAT6;
      else if (encap == LB_ENCAP_TYPE_NAT4)
        {
          error = clib_error_return(0, "currently does not support NAT64");
          goto done;
        }
    }

  lb_garbage_collection();

  u32 index;
  if (!del) {
    if (encap == LB_ENCAP_TYPE_L3DSR) {
        args.encap_args.dscp = (u8)(dscp & 0x3F);
      }
      else if ((encap == LB_ENCAP_TYPE_NAT4)
               || (encap == LB_ENCAP_TYPE_NAT6))
        {
          args.encap_args.srv_type = (u8) srv_type;
          args.encap_args.target_port = (u16) target_port;
        }

    if ((ret = lb_vip_add(args, &index))) {
      error = clib_error_return (0, "lb_vip_add error %d", ret);
      goto done;
    } else {
      vlib_cli_output(vm, "lb_vip_add ok %d", index);
    }
  } else {
    if ((ret = lb_vip_find_index(&(args.prefix), args.plen,
                                 args.protocol, args.port, &index))) {
      error = clib_error_return (0, "lb_vip_find_index error %d", ret);
      goto done;
    } else if ((ret = lb_vip_del(index))) {
      error = clib_error_return (0, "lb_vip_del error %d", ret);
      goto done;
    }
  }

done:
  unformat_free (line_input);

  return error;
}

VLIB_CLI_COMMAND (lb_vip_command, static) =
{
  .path = "lb vip",
  .short_help = "lb vip <prefix> "
      "[protocol (tcp|udp) port <n>] "
      "[encap (gre6|gre4|l3dsr|nat4|nat6)] "
      "[dscp <n>] "
      "[type (nodeport|clusterip) target_port <n>] "
      "[new_len <n>] [del]",
  .function = lb_vip_command_fn,
};

static clib_error_t *
lb_as_command_fn (vlib_main_t * vm,
              unformat_input_t * input, vlib_cli_command_t * cmd)
{
  unformat_input_t _line_input, *line_input = &_line_input;
  ip46_address_t vip_prefix, as_addr;
  u8 vip_plen;
  ip46_address_t *as_array = 0;
  u32 vip_index;
  u32 port = 0;
  u8 protocol = 0;
  u8 del = 0;
  u8 flush = 0;
  int ret;
  clib_error_t *error = 0;

  if (!unformat_user (input, unformat_line_input, line_input))
    return 0;

  if (!unformat(line_input, "%U", unformat_ip46_prefix,
                &vip_prefix, &vip_plen, IP46_TYPE_ANY))
  {
    error = clib_error_return (0, "invalid as address: '%U'",
                               format_unformat_error, line_input);
    goto done;
  }

  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
  {
    if (unformat(line_input, "%U", unformat_ip46_address,
                 &as_addr, IP46_TYPE_ANY))
      {
        vec_add1(as_array, as_addr);
      }
    else if (unformat(line_input, "del"))
      {
        del = 1;
      }
    else if (unformat(line_input, "flush"))
      {
        flush = 1;
      }
    else if (unformat(line_input, "protocol tcp"))
      {
          protocol = (u8)IP_PROTOCOL_TCP;
      }
    else if (unformat(line_input, "protocol udp"))
      {
          protocol = (u8)IP_PROTOCOL_UDP;
      }
    else if (unformat(line_input, "port %d", &port))
      ;
    else {
      error = clib_error_return (0, "parse error: '%U'",
                                 format_unformat_error, line_input);
      goto done;
    }
  }

  /* If port == 0, it means all-port VIP */
  if (port == 0)
    {
      protocol = ~0;
    }

  if ((ret = lb_vip_find_index(&vip_prefix, vip_plen, protocol,
                               (u16)port, &vip_index))){
    error = clib_error_return (0, "lb_vip_find_index error %d", ret);
    goto done;
  }

  if (!vec_len(as_array)) {
    error = clib_error_return (0, "No AS address provided");
    goto done;
  }

  lb_garbage_collection();
  clib_warning("vip index is %d", vip_index);

  if (del) {
    if ((ret = lb_vip_del_ass(vip_index, as_array, vec_len(as_array), flush)))
    {
      error = clib_error_return (0, "lb_vip_del_ass error %d", ret);
      goto done;
    }
  } else {
    if ((ret = lb_vip_add_ass(vip_index, as_array, vec_len(as_array))))
    {
      error = clib_error_return (0, "lb_vip_add_ass error %d", ret);
      goto done;
    }
  }

done:
  unformat_free (line_input);
  vec_free(as_array);

  return error;
}

VLIB_CLI_COMMAND (lb_as_command, static) =
{
  .path = "lb as",
  .short_help = "lb as <vip-prefix> [protocol (tcp|udp) port <n>]"
      " [<address> [<address> [...]]] [del] [flush]",
  .function = lb_as_command_fn,
};

static clib_error_t *
lb_conf_command_fn (vlib_main_t * vm,
              unformat_input_t * input, vlib_cli_command_t * cmd)
{
  lb_main_t *lbm = &lb_main;
  unformat_input_t _line_input, *line_input = &_line_input;
  ip4_address_t ip4 = lbm->ip4_src_address;
  ip6_address_t ip6 = lbm->ip6_src_address;
  u32 per_cpu_sticky_buckets = lbm->per_cpu_sticky_buckets;
  u32 per_cpu_sticky_buckets_log2 = 0;
  u32 flow_timeout = lbm->flow_timeout;
  int ret;
  clib_error_t *error = 0;

  if (!unformat_user (input, unformat_line_input, line_input))
    return 0;

  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
  {
    if (unformat(line_input, "ip4-src-address %U", unformat_ip4_address, &ip4))
      ;
    else if (unformat(line_input, "ip6-src-address %U", unformat_ip6_address, &ip6))
      ;
    else if (unformat(line_input, "buckets %d", &per_cpu_sticky_buckets))
      ;
    else if (unformat(line_input, "buckets-log2 %d", &per_cpu_sticky_buckets_log2)) {
      if (per_cpu_sticky_buckets_log2 >= 32)
        return clib_error_return (0, "buckets-log2 value is too high");
      per_cpu_sticky_buckets = 1 << per_cpu_sticky_buckets_log2;
    } else if (unformat(line_input, "timeout %d", &flow_timeout))
      ;
    else {
      error = clib_error_return (0, "parse error: '%U'",
                                 format_unformat_error, line_input);
      goto done;
    }
  }

  lb_garbage_collection();

  if ((ret = lb_conf(&ip4, &ip6, per_cpu_sticky_buckets, flow_timeout))) {
    error = clib_error_return (0, "lb_conf error %d", ret);
    goto done;
  }

done:
  unformat_free (line_input);

  return error;
}

VLIB_CLI_COMMAND (lb_conf_command, static) =
{
  .path = "lb conf",
  .short_help = "lb conf [ip4-src-address <addr>] [ip6-src-address <addr>] [buckets <n>] [timeout <s>]",
  .function = lb_conf_command_fn,
};

static clib_error_t *
lb_show_command_fn (vlib_main_t * vm,
              unformat_input_t * input, vlib_cli_command_t * cmd)
{
  vlib_cli_output(vm, "%U", format_lb_main);
  return NULL;
}


VLIB_CLI_COMMAND (lb_show_command, static) =
{
  .path = "show lb",
  .short_help = "show lb",
  .function = lb_show_command_fn,
};

static clib_error_t *
lb_show_vips_command_fn (vlib_main_t * vm,
              unformat_input_t * input, vlib_cli_command_t * cmd)
{
  unformat_input_t line_input;
  lb_main_t *lbm = &lb_main;
  lb_vip_t *vip;
  u8 verbose = 0;

  if (!unformat_user (input, unformat_line_input, &line_input))
      return 0;

  if (unformat(&line_input, "verbose"))
    verbose = 1;

  /* Hide dummy VIP */
  pool_foreach(vip, lbm->vips, {
    if (vip != lbm->vips) {
      vlib_cli_output(vm, "%U\n", verbose?format_lb_vip_detailed:format_lb_vip, vip);
    }
  });

  unformat_free (&line_input);
  return NULL;
}

VLIB_CLI_COMMAND (lb_show_vips_command, static) =
{
  .path = "show lb vips",
  .short_help = "show lb vips [verbose]",
  .function = lb_show_vips_command_fn,
};

static clib_error_t *
lb_set_interface_nat_command_fn (vlib_main_t * vm,
                                 unformat_input_t * input,
                                 vlib_cli_command_t * cmd,
                                 u8 is_nat6)
{
  unformat_input_t _line_input, *line_input = &_line_input;
  vnet_main_t * vnm = vnet_get_main();
  clib_error_t * error = 0;
  u32 _sw_if_index, *sw_if_index = &_sw_if_index;
  u32 * inside_sw_if_indices = 0;
  int is_del = 0;

  /* Get a line of input. */
  if (!unformat_user (input, unformat_line_input, line_input))
    return 0;

  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (line_input, "in %U", unformat_vnet_sw_interface,
                    vnm, sw_if_index))
        vec_add1 (inside_sw_if_indices, *sw_if_index);
      else if (unformat (line_input, "del"))
        is_del = 1;
      else
        {
          error = clib_error_return (0, "unknown input '%U'",
            format_unformat_error, line_input);
          goto done;
        }
    }

    vec_foreach (sw_if_index, inside_sw_if_indices)
    {
      if (!is_nat6)
        {
          if (lb_nat4_interface_add_del (*sw_if_index, is_del))
            {
              error = clib_error_return(
                  0, "%s %U failed", is_del ? "del" : "add",
                  format_vnet_sw_interface_name, vnm,
                  vnet_get_sw_interface (vnm, *sw_if_index));
              goto done;
            }
        }
      else
        {
          if (lb_nat6_interface_add_del (*sw_if_index, is_del))
            {
              error = clib_error_return(
                  0, "%s %U failed", is_del ? "del" : "add",
                  format_vnet_sw_interface_name, vnm,
                  vnet_get_sw_interface (vnm, *sw_if_index));
              goto done;
            }
        }
    }

done:
  unformat_free (line_input);
  vec_free (inside_sw_if_indices);

  return error;
}

static clib_error_t *
lb_set_interface_nat4_command_fn (vlib_main_t * vm,
                                  unformat_input_t * input,
                                  vlib_cli_command_t * cmd)
{
  return lb_set_interface_nat_command_fn(vm, input, cmd, 0);
}

VLIB_CLI_COMMAND (lb_set_interface_nat4_command, static) = {
  .path = "lb set interface nat4",
  .function = lb_set_interface_nat4_command_fn,
  .short_help = "lb set interface nat4 in <intfc> [del]",
};

static clib_error_t *
lb_set_interface_nat6_command_fn (vlib_main_t * vm,
                                  unformat_input_t * input,
                                  vlib_cli_command_t * cmd)
{
  return lb_set_interface_nat_command_fn(vm, input, cmd, 1);
}

VLIB_CLI_COMMAND (lb_set_interface_nat6_command, static) = {
  .path = "lb set interface nat6",
  .function = lb_set_interface_nat6_command_fn,
  .short_help = "lb set interface nat6 in <intfc> [del]",
};

static clib_error_t *
lb_flowtable_flush_command_fn (vlib_main_t * vm,
              unformat_input_t * input, vlib_cli_command_t * cmd)
{
  lb_flush_vip_as(~0, 0);

  return NULL;
}

static clib_error_t *
lb_flush_vip_command_fn (vlib_main_t * vm,
                         unformat_input_t * input,
                         vlib_cli_command_t * cmd)
{
  unformat_input_t _line_input, *line_input = &_line_input;
  int ret;
  ip46_address_t vip_prefix;
  u8 vip_plen;
  u32 vip_index;
  u8 protocol = 0;
  u32 port = 0;
  clib_error_t *error = 0;

  if (!unformat_user (input, unformat_line_input, line_input))
    return 0;

  if (!unformat(line_input, "%U", unformat_ip46_prefix, &vip_prefix,
                &vip_plen, IP46_TYPE_ANY, &vip_plen)) {
    error = clib_error_return (0, "invalid vip prefix: '%U'",
                               format_unformat_error, line_input);
    goto done;
  }

  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
  {
    if (unformat(line_input, "protocol tcp"))
      {
        protocol = (u8)IP_PROTOCOL_TCP;
      }
    else if (unformat(line_input, "protocol udp"))
      {
        protocol = (u8)IP_PROTOCOL_UDP;
      }
    else if (unformat(line_input, "port %d", &port))
      ;
  }

  if (port == 0)
    {
      protocol = ~0;
    }

  if ((ret = lb_vip_find_index(&vip_prefix, vip_plen, protocol,
                               (u16)port, &vip_index))){
    error = clib_error_return (0, "lb_vip_find_index error %d", ret);
    goto done;
  }

  if ((ret = lb_flush_vip_as(vip_index, ~0)))
    {
      error = clib_error_return (0, "lb_flush_vip error %d", ret);
    }
  else
    {
        vlib_cli_output(vm, "lb_flush_vip ok %d", vip_index);
    }

done:
  unformat_free (line_input);

  return error;
}

/*
 * flush lb flowtable as per vip
 */
VLIB_CLI_COMMAND (lb_flush_vip_command, static) =
{
  .path = "lb flush vip",
  .short_help = "lb flush vip <prefix> "
      "[protocol (tcp|udp) port <n>]",
  .function = lb_flush_vip_command_fn,
};

/*
 * flush all lb flowtables
 * This is indented for debug and unit-tests purposes only
 */
VLIB_CLI_COMMAND (lb_flowtable_flush_command, static) =
{
  .path = "test lb flowtable flush",
  .short_help = "test lb flowtable flush",
  .function = lb_flowtable_flush_command_fn,
};