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/*
 * 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.
 */
/*
 * node_format.c: node formatting
 *
 * Copyright (c) 2008 Eliot Dresselhaus
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#include <vlib/vlib.h>

u8 *
format_vlib_node_graph (u8 * s, va_list * va)
{
  vlib_node_main_t *nm = va_arg (*va, vlib_node_main_t *);
  vlib_node_t *n = va_arg (*va, vlib_node_t *);
  int i, j;
  u32 indent;
  typedef struct
  {
    u32 next_node;
    u32 next_slot;
    u32 prev_node;
  } tmp_t;
  tmp_t *tmps = 0;
  tmp_t empty = {.next_node = ~0,.prev_node = ~0 };

  if (!n)
    return format (s, "%=26s%=26s%=26s", "Name", "Next", "Previous");

  s = format (s, "%-26v", n->name);

  indent = format_get_indent (s);

  for (i = j = 0; i < vec_len (n->next_nodes); i++)
    {
      if (n->next_nodes[i] == VLIB_INVALID_NODE_INDEX)
	continue;
      vec_validate_init_empty (tmps, j, empty);
      tmps[j].next_node = n->next_nodes[i];
      tmps[j].next_slot = i;
      j++;
    }

  j = 0;
  /* *INDENT-OFF* */
  clib_bitmap_foreach (i, n->prev_node_bitmap, ({
	vec_validate_init_empty (tmps, j, empty);
	tmps[j].prev_node = i;
	j++;
      }));
  /* *INDENT-ON* */

  for (i = 0; i < vec_len (tmps); i++)
    {
      if (i > 0)
	s = format (s, "\n%U", format_white_space, indent);

      if (tmps[i].next_node != ~0)
	{
	  vlib_node_t *x;
	  u8 *t = 0;

	  x = vec_elt (nm->nodes, tmps[i].next_node);
	  t = format (t, "%v [%d]", x->name, tmps[i].next_slot);
	  s = format (s, "%=26v", t);
	  vec_free (t);
	}
      else
	s = format (s, "%26s", "");

      if (tmps[i].prev_node != ~0)
	{
	  vlib_node_t *x;
	  x = vec_elt (nm->nodes, tmps[i].prev_node);
	  s = format (s, "%=26v", x->name);
	}
    }

  vec_free (tmps);

  return s;
}

u8 *
format_vlib_node_and_next (u8 * s, va_list * va)
{
  vlib_main_t *vm = va_arg (*va, vlib_main_t *);
  vlib_node_t *n = va_arg (*va, vlib_node_t *);
  u32 next_index = va_arg (*va, u32);
  vlib_node_t *n_next;
  u32 *ni;

  ni = vec_elt_at_index (n->next_nodes, next_index);
  n_next = vlib_get_node (vm, ni[0]);
  return format (s, "%v -> %v", n->name, n_next->name);
}

u8 *
format_vlib_node_name (u8 * s, va_list * va)
{
  vlib_main_t *vm = va_arg (*va, vlib_main_t *);
  u32 node_index = va_arg (*va, u32);
  vlib_node_t *n = vlib_get_node (vm, node_index);

  return format (s, "%v", n->name);
}

u8 *
format_vlib_next_node_name (u8 * s, va_list * va)
{
  vlib_main_t *vm = va_arg (*va, vlib_main_t *);
  u32 node_index = va_arg (*va, u32);
  u32 next_index = va_arg (*va, u32);
  vlib_node_t *next = vlib_get_next_node (vm, node_index, next_index);
  return format (s, "%v", next->name);
}

/* Parse node name -> node index. */
uword
unformat_vlib_node (unformat_input_t * input, va_list * args)
{
  vlib_main_t *vm = va_arg (*args, vlib_main_t *);
  u32 *result = va_arg (*args, u32 *);

  return unformat_user (input, unformat_hash_vec_string,
			vm->node_main.node_by_name, result);
}

u8 *
format_vlib_time (u8 * s, va_list * va)
{
  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
  f64 time = va_arg (*va, f64);
  return format (s, "%12.4f", time);
}

u8 *
format_vlib_cpu_time (u8 * s, va_list * va)
{
  vlib_main_t *vm = va_arg (*va, vlib_main_t *);
  u64 cpu_time = va_arg (*va, u64);
  f64 dt;

  dt =
    (cpu_time -
     vm->clib_time.init_cpu_time) * vm->clib_time.seconds_per_clock;
  return format (s, "%U", format_vlib_time, vm, dt);
}

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */
class="nf">tearDown(self): """ Show various debug prints after each test. """ super(TestIP6VrfMultiInst, self).tearDown() if not self.vpp_dead: self.logger.info(self.vapi.ppcli("show ip6 fib")) self.logger.info(self.vapi.ppcli("show ip6 neighbors")) def create_vrf_and_assign_interfaces(self, count, start=1): """ Create required number of FIB tables / VRFs, put 3 l2-pg interfaces to every FIB table / VRF. :param int count: Number of FIB tables / VRFs to be created. :param int start: Starting number of the FIB table / VRF ID. \ (Default value = 1) """ for i in range(count): vrf_id = i + start pg_if = self.pg_if_by_vrf_id[vrf_id][0] dest_addr = pg_if.remote_hosts[0].ip6n dest_addr_len = 64 self.vapi.ip_add_del_route( dest_addr, dest_addr_len, pg_if.local_ip6n, is_ipv6=1, table_id=vrf_id, create_vrf_if_needed=1, is_multipath=1) self.logger.info("IPv6 VRF ID %d created" % vrf_id) if vrf_id not in self.vrf_list: self.vrf_list.append(vrf_id) if vrf_id in self.vrf_reset_list: self.vrf_reset_list.remove(vrf_id) for j in range(self.pg_ifs_per_vrf): pg_if = self.pg_if_by_vrf_id[vrf_id][j] pg_if.set_table_ip6(vrf_id) self.logger.info("pg-interface %s added to IPv6 VRF ID %d" % (pg_if.name, vrf_id)) if pg_if not in self.pg_in_vrf: self.pg_in_vrf.append(pg_if) if pg_if in self.pg_not_in_vrf: self.pg_not_in_vrf.remove(pg_if) pg_if.config_ip6() pg_if.disable_ipv6_ra() pg_if.configure_ipv6_neighbors(vrf_id) self.logger.debug(self.vapi.ppcli("show ip6 fib")) self.logger.debug(self.vapi.ppcli("show ip6 neighbors")) def reset_vrf(self, vrf_id): """ Reset required FIB table / VRF. :param int vrf_id: The FIB table / VRF ID to be reset. """ # self.vapi.reset_vrf(vrf_id, is_ipv6=1) self.vapi.reset_fib(vrf_id, is_ipv6=1) if vrf_id in self.vrf_list: self.vrf_list.remove(vrf_id) if vrf_id not in self.vrf_reset_list: self.vrf_reset_list.append(vrf_id) for j in range(self.pg_ifs_per_vrf): pg_if = self.pg_if_by_vrf_id[vrf_id][j] if pg_if in self.pg_in_vrf: self.pg_in_vrf.remove(pg_if) if pg_if not in self.pg_not_in_vrf: self.pg_not_in_vrf.append(pg_if) self.logger.info("IPv6 VRF ID %d reset" % vrf_id) self.logger.debug(self.vapi.ppcli("show ip6 fib")) self.logger.debug(self.vapi.ppcli("show ip6 neighbors")) def create_stream(self, src_if, packet_sizes): """ Create input packet stream for defined interface using hosts list. :param object src_if: Interface to create packet stream for. :param list packet_sizes: List of required packet sizes. :return: Stream of packets. """ pkts = [] src_hosts = src_if.remote_hosts for dst_if in self.flows[src_if]: for dst_host in dst_if.remote_hosts: src_host = random.choice(src_hosts) pkt_info = self.create_packet_info(src_if, dst_if) payload = self.info_to_payload(pkt_info) p = (Ether(dst=src_if.local_mac, src=src_host.mac) / IPv6(src=src_host.ip6, dst=dst_host.ip6) / UDP(sport=1234, dport=1234) / Raw(payload)) pkt_info.data = p.copy() size = random.choice(packet_sizes) self.extend_packet(p, size) pkts.append(p) self.logger.debug("Input stream created for port %s. Length: %u pkt(s)" % (src_if.name, len(pkts))) return pkts def verify_capture(self, pg_if, capture): """ Verify captured input packet stream for defined interface. :param object pg_if: Interface to verify captured packet stream for. :param list capture: Captured packet stream. """ last_info = dict() for i in self.pg_interfaces: last_info[i.sw_if_index] = None dst_sw_if_index = pg_if.sw_if_index for packet in capture: try: ip = packet[IPv6] udp = packet[UDP] payload_info = self.payload_to_info(str(packet[Raw])) packet_index = payload_info.index self.assertEqual(payload_info.dst, dst_sw_if_index) self.logger.debug("Got packet on port %s: src=%u (id=%u)" % (pg_if.name, payload_info.src, packet_index)) next_info = self.get_next_packet_info_for_interface2( payload_info.src, dst_sw_if_index, last_info[payload_info.src]) last_info[payload_info.src] = next_info self.assertIsNotNone(next_info) self.assertEqual(packet_index, next_info.index) saved_packet = next_info.data # Check standard fields self.assertEqual(ip.src, saved_packet[IPv6].src) self.assertEqual(ip.dst, saved_packet[IPv6].dst) self.assertEqual(udp.sport, saved_packet[UDP].sport) self.assertEqual(udp.dport, saved_packet[UDP].dport) except: self.logger.error(ppp("Unexpected or invalid packet:", packet)) raise for i in self.pg_interfaces: remaining_packet = self.get_next_packet_info_for_interface2( i, dst_sw_if_index, last_info[i.sw_if_index]) self.assertIsNone( remaining_packet, "Port %u: Packet expected from source %u didn't arrive" % (dst_sw_if_index, i.sw_if_index)) def verify_vrf(self, vrf_id): """ Check if the FIB table / VRF ID is configured. :param int vrf_id: The FIB table / VRF ID to be verified. :return: 1 if the FIB table / VRF ID is configured, otherwise return 0. """ ip6_fib_dump = self.vapi.ip6_fib_dump() vrf_exist = False vrf_count = 0 for ip6_fib_details in ip6_fib_dump: if ip6_fib_details[2] == vrf_id: if not vrf_exist: vrf_exist = True addr = inet_ntop(socket.AF_INET6, ip6_fib_details[4]) addrtype = in6_getAddrType(addr) vrf_count += 1 if addrtype == IPV6_ADDR_UNICAST else 0 if not vrf_exist and vrf_count == 0: self.logger.info("IPv6 VRF ID %d is not configured" % vrf_id) return VRF_NOT_CONFIGURED elif vrf_exist and vrf_count == 0: self.logger.info("IPv6 VRF ID %d has been reset" % vrf_id) return VRF_RESET else: self.logger.info("IPv6 VRF ID %d is configured" % vrf_id) return VRF_CONFIGURED def run_verify_test(self): """ Create packet streams for all configured l2-pg interfaces, send all \ prepared packet streams and verify that: - all packets received correctly on all pg-l2 interfaces assigned to bridge domains - no packet received on all pg-l2 interfaces not assigned to bridge domains :raise RuntimeError: If no packet captured on l2-pg interface assigned to the bridge domain or if any packet is captured on l2-pg interface not assigned to the bridge domain. """ # Test # Create incoming packet streams for packet-generator interfaces for pg_if in self.pg_interfaces: pkts = self.create_stream(pg_if, self.pg_if_packet_sizes) pg_if.add_stream(pkts) # Enable packet capture and start packet sending self.pg_enable_capture(self.pg_interfaces) self.pg_start() # Verify # Verify outgoing packet streams per packet-generator interface for pg_if in self.pg_interfaces: if pg_if in self.pg_in_vrf: capture = pg_if.get_capture(remark="interface is in VRF") self.verify_capture(pg_if, capture) elif pg_if in self.pg_not_in_vrf: pg_if.assert_nothing_captured(remark="interface is not in VRF", filter_out_fn=is_ipv6_misc_ext) self.logger.debug("No capture for interface %s" % pg_if.name) else: raise Exception("Unknown interface: %s" % pg_if.name) def test_ip6_vrf_01(self): """ IP6 VRF Multi-instance test 1 - create 4 VRFs """ # Config 1 # Create 4 VRFs self.create_vrf_and_assign_interfaces(4) # Verify 1 for vrf_id in self.vrf_list: self.assertEqual(self.verify_vrf(vrf_id), VRF_CONFIGURED) # Test 1 self.run_verify_test() def test_ip6_vrf_02(self): """ IP6 VRF Multi-instance test 2 - reset 2 VRFs """ # Config 2 # Delete 2 VRFs self.reset_vrf(1) self.reset_vrf(2) # Verify 2 for vrf_id in self.vrf_reset_list: self.assertEqual(self.verify_vrf(vrf_id), VRF_RESET) for vrf_id in self.vrf_list: self.assertEqual(self.verify_vrf(vrf_id), VRF_CONFIGURED) # Test 2 self.run_verify_test() # Reset routes learned from ICMPv6 Neighbor Discovery for vrf_id in self.vrf_reset_list: self.reset_vrf(vrf_id) def test_ip6_vrf_03(self): """ IP6 VRF Multi-instance 3 - add 2 VRFs """ # Config 3 # Add 1 of reset VRFs and 1 new VRF self.create_vrf_and_assign_interfaces(1) self.create_vrf_and_assign_interfaces(1, start=5) # Verify 3 for vrf_id in self.vrf_reset_list: self.assertEqual(self.verify_vrf(vrf_id), VRF_RESET) for vrf_id in self.vrf_list: self.assertEqual(self.verify_vrf(vrf_id), VRF_CONFIGURED) # Test 3 self.run_verify_test() # Reset routes learned from ICMPv6 Neighbor Discovery for vrf_id in self.vrf_reset_list: self.reset_vrf(vrf_id) def test_ip6_vrf_04(self): """ IP6 VRF Multi-instance test 4 - reset 4 VRFs """ # Config 4 # Reset all VRFs (i.e. no VRF except VRF=0 created) for i in range(len(self.vrf_list)): self.reset_vrf(self.vrf_list[0]) # Verify 4 for vrf_id in self.vrf_reset_list: self.assertEqual(self.verify_vrf(vrf_id), VRF_RESET) for vrf_id in self.vrf_list: self.assertEqual(self.verify_vrf(vrf_id), VRF_CONFIGURED) # Test 4 self.run_verify_test() if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)