#!/usr/bin/env python3 import socket from socket import inet_pton, inet_ntop import unittest from parameterized import parameterized import scapy.compat import scapy.layers.inet6 as inet6 from scapy.layers.inet import UDP, IP from scapy.contrib.mpls import MPLS from scapy.layers.inet6 import ( IPv6, ICMPv6ND_NS, ICMPv6ND_RS, ICMPv6ND_RA, ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types, ICMPv6TimeExceeded, ICMPv6EchoRequest, ICMPv6EchoReply, IPv6ExtHdrHopByHop, ICMPv6MLReport2, ICMPv6MLDMultAddrRec, ) from scapy.layers.l2 import Ether, Dot1Q, GRE from scapy.packet import Raw from scapy.utils6 import ( in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, in6_mactoifaceid, ) from six import moves from framework import VppTestCase, VppTestRunner, tag_run_solo from util import ppp, ip6_normalize, mk_ll_addr from vpp_papi import VppEnum from vpp_ip import DpoProto, VppIpPuntPolicer, VppIpPuntRedirect, VppIpPathMtu from vpp_ip_route import ( VppIpRoute, VppRoutePath, find_route, VppIpMRoute, VppMRoutePath, VppMplsIpBind, VppMplsRoute, VppMplsTable, VppIpTable, FibPathType, FibPathProto, VppIpInterfaceAddress, find_route_in_dump, find_mroute_in_dump, VppIp6LinkLocalAddress, VppIpRouteV2, ) from vpp_neighbor import find_nbr, VppNeighbor from vpp_ipip_tun_interface import VppIpIpTunInterface from vpp_pg_interface import is_ipv6_misc from vpp_sub_interface import VppSubInterface, VppDot1QSubint from vpp_policer import VppPolicer, PolicerAction from ipaddress import IPv6Network, IPv6Address from vpp_gre_interface import VppGreInterface from vpp_teib import VppTeib AF_INET6 = socket.AF_INET6 try: text_type = unicode except NameError: text_type = str NUM_PKTS = 67 class TestIPv6ND(VppTestCase): def validate_ra(self, intf, rx, dst_ip=None): if not dst_ip: dst_ip = intf.remote_ip6 # unicasted packets must come to the unicast mac self.assertEqual(rx[Ether].dst, intf.remote_mac) # and from the router's MAC self.assertEqual(rx[Ether].src, intf.local_mac) # the rx'd RA should be addressed to the sender's source self.assertTrue(rx.haslayer(ICMPv6ND_RA)) self.assertEqual(in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip)) # and come from the router's link local self.assertTrue(in6_islladdr(rx[IPv6].src)) self.assertEqual(in6_ptop(rx[IPv6].src), in6_ptop(mk_ll_addr(intf.local_mac))) def validate_na(self, intf, rx, dst_ip=None, tgt_ip=None): if not dst_ip: dst_ip = intf.remote_ip6 if not tgt_ip: dst_ip = intf.local_ip6 # unicasted packets must come to the unicast mac self.assertEqual(rx[Ether].dst, intf.remote_mac) # and from the router's MAC self.assertEqual(rx[Ether].src, intf.local_mac) # the rx'd NA should be addressed to the sender's source self.assertTrue(rx.haslayer(ICMPv6ND_NA)) self.assertEqual(in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip)) # and come from the target address self.assertEqual(in6_ptop(rx[IPv6].src), in6_ptop(tgt_ip)) # Dest link-layer options should have the router's MAC dll = rx[ICMPv6NDOptDstLLAddr] self.assertEqual(dll.lladdr, intf.local_mac) def validate_ns(self, intf, rx, tgt_ip): nsma = in6_getnsma(inet_pton(AF_INET6, tgt_ip)) dst_ip = inet_ntop(AF_INET6, nsma) # NS is broadcast self.assertEqual(rx[Ether].dst, in6_getnsmac(nsma)) # and from the router's MAC self.assertEqual(rx[Ether].src, intf.local_mac) # the rx'd NS should be addressed to an mcast address # derived from the target address self.assertEqual(in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip)) # expect the tgt IP in the NS header ns = rx[ICMPv6ND_NS] self.assertEqual(in6_ptop(ns.tgt), in6_ptop(tgt_ip)) # packet is from the router's local address self.assertEqual(in6_ptop(rx[IPv6].src), intf.local_ip6) # Src link-layer options should have the router's MAC sll = rx[ICMPv6NDOptSrcLLAddr] self.assertEqual(sll.lladdr, intf.local_mac) def send_and_expect_ra( self, intf, pkts, remark, dst_ip=None, filter_out_fn=is_ipv6_misc ): intf.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = intf.get_capture(1, filter_out_fn=filter_out_fn) self.assertEqual(len(rx), 1) rx = rx[0] self.validate_ra(intf, rx, dst_ip) def send_and_expect_na( self, intf, pkts, remark, dst_ip=None, tgt_ip=None, filter_out_fn=is_ipv6_misc ): intf.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = intf.get_capture(1, filter_out_fn=filter_out_fn) self.assertEqual(len(rx), 1) rx = rx[0] self.validate_na(intf, rx, dst_ip, tgt_ip) def send_and_expect_ns( self, tx_intf, rx_intf, pkts, tgt_ip, filter_out_fn=is_ipv6_misc ): self.vapi.cli("clear trace") tx_intf.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = rx_intf.get_capture(1, filter_out_fn=filter_out_fn) self.assertEqual(len(rx), 1) rx = rx[0] self.validate_ns(rx_intf, rx, tgt_ip) def verify_ip(self, rx, smac, dmac, sip, dip): ether = rx[Ether] self.assertEqual(ether.dst, dmac) self.assertEqual(ether.src, smac) ip = rx[IPv6] self.assertEqual(ip.src, sip) self.assertEqual(ip.dst, dip) def get_ip6_nd_rx_requests(self, itf): """Get IP6 ND RX request stats for and interface""" return self.statistics["/net/ip6-nd/rx/requests"][:, itf.sw_if_index].sum() def get_ip6_nd_tx_requests(self, itf): """Get IP6 ND TX request stats for and interface""" return self.statistics["/net/ip6-nd/tx/requests"][:, itf.sw_if_index].sum() def get_ip6_nd_rx_replies(self, itf): """Get IP6 ND RX replies stats for and interface""" return self.statistics["/net/ip6-nd/rx/replies"][:, itf.sw_if_index].sum() def get_ip6_nd_tx_replies(self, itf): """Get IP6 ND TX replies stats for and interface""" return self.statistics["/net/ip6-nd/tx/replies"][:, itf.sw_if_index].sum() @tag_run_solo class TestIPv6(TestIPv6ND): """IPv6 Test Case""" @classmethod def setUpClass(cls): super(TestIPv6, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIPv6, cls).tearDownClass() def setUp(self): """ Perform test setup before test case. **Config:** - create 3 pg interfaces - untagged pg0 interface - Dot1Q subinterface on pg1 - Dot1AD subinterface on pg2 - setup interfaces: - put it into UP state - set IPv6 addresses - resolve neighbor address using NDP - configure 200 fib entries :ivar list interfaces: pg interfaces and subinterfaces. :ivar dict flows: IPv4 packet flows in test. *TODO:* Create AD sub interface """ super(TestIPv6, self).setUp() # create 3 pg interfaces self.create_pg_interfaces(range(3)) # create 2 subinterfaces for p1 and pg2 self.sub_interfaces = [ VppDot1QSubint(self, self.pg1, 100), VppDot1QSubint(self, self.pg2, 200) # TODO: VppDot1ADSubint(self, self.pg2, 200, 300, 400) ] # packet flows mapping pg0 -> pg1.sub, pg2.sub, etc. self.flows = dict() self.flows[self.pg0] = [self.pg1.sub_if, self.pg2.sub_if] self.flows[self.pg1.sub_if] = [self.pg0, self.pg2.sub_if] self.flows[self.pg2.sub_if] = [self.pg0, self.pg1.sub_if] # packet sizes self.pg_if_packet_sizes = [64, 1500, 9020] self.interfaces = list(self.pg_interfaces) self.interfaces.extend(self.sub_interfaces) # setup all interfaces for i in self.interfaces: i.admin_up() i.config_ip6() i.resolve_ndp() def tearDown(self): """Run standard test teardown and log ``show ip6 neighbors``.""" for i in self.interfaces: i.unconfig_ip6() i.admin_down() for i in self.sub_interfaces: i.remove_vpp_config() super(TestIPv6, self).tearDown() if not self.vpp_dead: self.logger.info(self.vapi.cli("show ip6 neighbors")) # info(self.vapi.cli("show ip6 fib")) # many entries def modify_packet(self, src_if, packet_size, pkt): """Add load, set destination IP and extend packet to required packet size for defined interface. :param VppInterface src_if: Interface to create packet for. :param int packet_size: Required packet size. :param Scapy pkt: Packet to be modified. """ dst_if_idx = int(packet_size / 10 % 2) dst_if = self.flows[src_if][dst_if_idx] info = self.create_packet_info(src_if, dst_if) payload = self.info_to_payload(info) p = pkt / Raw(payload) p[IPv6].dst = dst_if.remote_ip6 info.data = p.copy() if isinstance(src_if, VppSubInterface): p = src_if.add_dot1_layer(p) self.extend_packet(p, packet_size) return p def create_stream(self, src_if): """Create input packet stream for defined interface. :param VppInterface src_if: Interface to create packet stream for. """ hdr_ext = 4 if isinstance(src_if, VppSubInterface) else 0 pkt_tmpl = ( Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IPv6(src=src_if.remote_ip6) / inet6.UDP(sport=1234, dport=1234) ) pkts = [ self.modify_packet(src_if, i, pkt_tmpl) for i in moves.range( self.pg_if_packet_sizes[0], self.pg_if_packet_sizes[1], 10 ) ] pkts_b = [ self.modify_packet(src_if, i, pkt_tmpl) for i in moves.range( self.pg_if_packet_sizes[1] + hdr_ext, self.pg_if_packet_sizes[2] + hdr_ext, 50, ) ] pkts.extend(pkts_b) return pkts def verify_capture(self, dst_if, capture): """Verify captured input packet stream for defined interface. :param VppInterface dst_if: Interface to verify captured packet stream for. :param list capture: Captured packet stream. """ self.logger.info("Verifying capture on interface %s" % dst_if.name) last_info = dict() for i in self.interfaces: last_info[i.sw_if_index] = None is_sub_if = False dst_sw_if_index = dst_if.sw_if_index if hasattr(dst_if, "parent"): is_sub_if = True for packet in capture: if is_sub_if: # Check VLAN tags and Ethernet header packet = dst_if.remove_dot1_layer(packet) self.assertTrue(Dot1Q not in packet) try: ip = packet[IPv6] udp = packet[inet6.UDP] payload_info = self.payload_to_info(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)" % (dst_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.assertTrue(next_info is not None) 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[inet6.UDP].sport) self.assertEqual(udp.dport, saved_packet[inet6.UDP].dport) except: self.logger.error(ppp("Unexpected or invalid packet:", packet)) raise for i in self.interfaces: remaining_packet = self.get_next_packet_info_for_interface2( i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index] ) self.assertTrue( remaining_packet is None, "Interface %s: Packet expected from interface %s " "didn't arrive" % (dst_if.name, i.name), ) def test_next_header_anomaly(self): """IPv6 next header anomaly test Test scenario: - ipv6 next header field = Fragment Header (44) - next header is ICMPv6 Echo Request - wait for reassembly """ pkt = ( Ether(src=self.pg0.local_mac, dst=self.pg0.remote_mac) / IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6, nh=44) / ICMPv6EchoRequest() ) self.pg0.add_stream(pkt) self.pg_start() # wait for reassembly self.sleep(10) def test_fib(self): """IPv6 FIB test Test scenario: - Create IPv6 stream for pg0 interface - Create IPv6 tagged streams for pg1's and pg2's subinterface. - Send and verify received packets on each interface. """ pkts = self.create_stream(self.pg0) self.pg0.add_stream(pkts) for i in self.sub_interfaces: pkts = self.create_stream(i) i.parent.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) self.pg_start() pkts = self.pg0.get_capture() self.verify_capture(self.pg0, pkts) for i in self.sub_interfaces: pkts = i.parent.get_capture() self.verify_capture(i, pkts) def test_ns(self): """IPv6 Neighbour Solicitation Exceptions Test scena
/*
 * l2_input.h : layer 2 input packet processing
 *
 * Copyright (c) 2013 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.
 */

#ifndef included_vnet_l2_input_h
#define included_vnet_l2_input_h

#include <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vnet/l2/l2_bd.h>
#include <vnet/ethernet/packet.h>
#include <vnet/ip/ip.h>

/* Per-subinterface L2 feature configuration */

typedef struct
{

  union
  {
    u16 bd_index;		/* bridge domain id */
    u32 output_sw_if_index;	/* for xconnect */
  };

  /* config for which input features are configured on this interface */
  u32 feature_bitmap;

  /* split horizon group */
  u8 shg;

  /* Interface mode. If both are 0, this interface is in L3 mode */
  u8 xconnect;
  u8 bridge;

  /* this is the bvi interface for the bridge-domain */
  u8 bvi;

} l2_input_config_t;


typedef struct
{

  /* Next nodes for the feature bitmap */
  u32 feat_next_node_index[32];

  /* config vector indexed by sw_if_index */
  l2_input_config_t *configs;

  /* bridge domain config vector indexed by bd_index */
  l2_bridge_domain_t *bd_configs;

  /* convenience variables */
  vlib_main_t *vlib_main;
  vnet_main_t *vnet_main;
} l2input_main_t;

extern l2input_main_t l2input_main;

extern vlib_node_registration_t l2input_node;

static_always_inline l2_bridge_domain_t *
l2input_bd_config_from_index (l2input_main_t * l2im, u32 bd_index)
{
  l2_bridge_domain_t *bd_config;

  bd_config = vec_elt_at_index (l2im->bd_configs, bd_index);
  return bd_is_valid (bd_config) ? bd_config : NULL;
}

static_always_inline l2_bridge_domain_t *
l2input_bd_config (u32 bd_index)
{
  l2input_main_t *mp = &l2input_main;
  l2_bridge_domain_t *bd_config;

  vec_validate (mp->bd_configs, bd_index);
  bd_config = vec_elt_at_index (mp->bd_configs, bd_index);
  return bd_config;
}

/* L2 input indication packet is from BVI, using -2 */
#define L2INPUT_BVI ((u32) (~0-1))

/* L2 input features */

/* Mappings from feature ID to graph node name in reverse order */
#define foreach_l2input_feat                    \
 _(DROP,          "feature-bitmap-drop")        \
 _(XCONNECT,      "l2-output")                  \
 _(FLOOD,         "l2-flood")                   \
 _(ARP_TERM,      "arp-term-l2bd")              \
 _(UU_FLOOD,      "l2-flood")                   \
 _(GBP_FWD,       "gbp-fwd")                    \
 _(UU_FWD,        "l2-uu-fwd")                  \
 _(FWD,           "l2-fwd")                     \
 _(RW,            "l2-rw")                      \
 _(LEARN,         "l2-learn")                   \
 _(L2_EMULATION,  "l2-emulation")               \
 _(GBP_LEARN,     "gbp-learn-l2")               \
 _(GBP_NULL_CLASSIFY, "gbp-null-classify")      \
 _(GBP_SRC_CLASSIFY,  "gbp-src-classify")       \
 _(VTR,           "l2-input-vtr")               \
 _(L2_IP_QOS_RECORD, "l2-ip-qos-record")        \
 _(VPATH,         "vpath-input-l2")             \
 _(ACL,           "l2-input-acl")               \
 _(POLICER_CLAS,  "l2-policer-classify")	\
 _(INPUT_FEAT_ARC, "l2-input-feat-arc")         \
 _(INPUT_CLASSIFY, "l2-input-classify")         \
 _(SPAN,          "span-l2-input")

/* Feature bitmap positions */
typedef enum
{
#define _(sym,str) L2INPUT_FEAT_##sym##_BIT,
  foreach_l2input_feat
#undef _
  L2INPUT_N_FEAT
} l2input_feat_t;

STATIC_ASSERT (L2INPUT_N_FEAT <= 32, "too many l2 input features");

/* Feature bit masks */
typedef enum
{
  L2INPUT_FEAT_NONE = 0,
#define _(sym,str) L2INPUT_FEAT_##sym = (1<<L2INPUT_FEAT_##sym##_BIT),
  foreach_l2input_feat
#undef _
    L2INPUT_VALID_MASK =
#define _(sym,str) L2INPUT_FEAT_##sym |
    foreach_l2input_feat
#undef _
  0
} l2input_feat_masks_t;

STATIC_ASSERT ((u64) L2INPUT_VALID_MASK == (1ull << L2INPUT_N_FEAT) - 1, "");

/** Return an array of strings containing graph node names of each feature */
char **l2input_get_feat_names (void);

/* arg0 - u32 feature_bitmap, arg1 - u32 verbose */
u8 *format_l2_input_features (u8 * s, va_list * args);

static_always_inline u8
bd_feature_flood (l2_bridge_domain_t * bd_config)
{
  return ((bd_config->feature_bitmap & L2INPUT_FEAT_FLOOD) ==
	  L2INPUT_FEAT_FLOOD);
}

static_always_inline u8
bd_feature_uu_flood (l2_bridge_domain_t * bd_config)
{
  return ((bd_config->feature_bitmap & L2INPUT_FEAT_UU_FLOOD) ==
	  L2INPUT_FEAT_UU_FLOOD);
}

static_always_inline u8
bd_feature_forward (l2_bridge_domain_t * bd_config)
{
  return ((bd_config->feature_bitmap & L2INPUT_FEAT_FWD) == L2INPUT_FEAT_FWD);
}

static_always_inline u8
bd_feature_learn (l2_bridge_domain_t * bd_config)
{
  return ((bd_config->feature_bitmap & L2INPUT_FEAT_LEARN) ==
	  L2INPUT_FEAT_LEARN);
}

static_always_inline u8
bd_feature_arp_term (l2_bridge_domain_t * bd_config)
{
  return ((bd_config->feature_bitmap & L2INPUT_FEAT_ARP_TERM) ==
	  L2INPUT_FEAT_ARP_TERM);
}

/** Masks for eliminating features that do not apply to a packet */

/** Get a pointer to the config for the given interface */
l2_input_config_t *l2input_intf_config (u32 sw_if_index);

/* Enable (or disable) the feature in the bitmap for the given interface */
u32 l2input_intf_bitmap_enable (u32 sw_if_index,
				l2input_feat_masks_t feature_bitmap,
				u32 enable);

/* Sets modifies flags from a bridge domain */
u32 l2input_set_bridge_features (u32 bd_index, u32 feat_mask, u32 feat_value);

void l2input_interface_mac_change (u32 sw_if_index,
				   const u8 * old_address,
				   const u8 * new_address);

#define MODE_L3        0
#define MODE_L2_BRIDGE 1
#define MODE_L2_XC     2
#define MODE_L2_CLASSIFY 3

#define MODE_ERROR_ETH        1
#define MODE_ERROR_BVI_DEF    2

u32 set_int_l2_mode (vlib_main_t * vm,
		     vnet_main_t * vnet_main,
		     u32 mode,
		     u32 sw_if_index,
		     u32 bd_index, l2_bd_port_type_t port_type,
		     u32 shg, u32 xc_sw_if_index);

static inline void
vnet_update_l2_len (vlib_buffer_t * b)
{
  ethernet_header_t *eth;
  u16 ethertype;
  u8 vlan_count = 0;

  /* point at current l2 hdr */
  eth = vlib_buffer_get_current (b);

  /*
   * l2-output pays no attention to this
   * but the tag push/pop code on an l2 subif needs it.
   *
   * Determine l2 header len, check for up to 2 vlans
   */
  vnet_buffer (b)->l2.l2_len = sizeof (ethernet_header_t);
  ethertype = clib_net_to_host_u16 (eth->type);
  if (ethernet_frame_is_tagged (ethertype))
    {
      ethernet_vlan_header_t *vlan;
      vnet_buffer (b)->l2.l2_len += sizeof (*vlan);
      vlan_count = 1;
      vlan = (void *) (eth + 1);
      ethertype = clib_net_to_host_u16 (vlan->type);
      if (ethertype == ETHERNET_TYPE_VLAN)
	{
	  vnet_buffer (b)->l2.l2_len += sizeof (*vlan);
	  vlan_count = 2;
	}
    }
  ethernet_buffer_set_vlan_count (b, vlan_count);
}

/*
 * Compute flow hash of an ethernet packet, use 5-tuple hash if L3 packet
 * is ip4 or ip6. Otherwise hash on smac/dmac/etype.
 * The vlib buffer current pointer is expected to be at ethernet header
 * and vnet l2.l2_len is expected to be setup already.
 */
static inline u32
vnet_l2_compute_flow_hash (vlib_buffer_t * b)
{
  ethernet_header_t *eh = vlib_buffer_get_current (b);
  u8 *l3h = (u8 *) eh + vnet_buffer (b)->l2.l2_len;
  u16 ethertype = clib_net_to_host_u16 (*(u16 *) (l3h - 2));

  if (ethertype == ETHERNET_TYPE_IP4)
    return ip4_compute_flow_hash ((ip4_header_t *) l3h, IP_FLOW_HASH_DEFAULT);
  else if (ethertype == ETHERNET_TYPE_IP6)
    return ip6_compute_flow_hash ((ip6_header_t *) l3h, IP_FLOW_HASH_DEFAULT);
  else
    {
      u32 a, b, c;
      u32 *ap = (u32 *) & eh->dst_address[2];
      u32 *bp = (u32 *) & eh->src_address[2];
      a = *ap;
      b = *bp;
      c = ethertype;
      hash_v3_mix32 (a, b, c);
      hash_v3_finalize32 (a, b, c);
      return c;
    }
}

#endif


/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */
/ ICMPv6NDOptPrefixInfo( prefix="1::", prefixlen=64, validlifetime=2, preferredlifetime=2, L=1, A=1, ) / ICMPv6NDOptPrefixInfo( prefix="7::", prefixlen=20, validlifetime=1500, preferredlifetime=1000, L=1, A=0, ) ) self.pg0.add_stream([packet]) self.pg_start() self.sleep_on_vpp_time(0.1) fib = self.vapi.ip_route_dump(0, True) # check FIB for new address addresses = set(self.get_interface_addresses(fib, self.pg0)) new_addresses = addresses.difference(initial_addresses) self.assertEqual(len(new_addresses), 1) prefix = IPv6Network( text_type("%s/%d" % (list(new_addresses)[0], 20)), strict=False ) self.assertEqual(prefix, IPv6Network(text_type("1::/20"))) # check FIB for new default route default_routes = self.get_default_routes(fib) self.assertEqual(len(default_routes), 1) dr = default_routes[0] self.assertEqual(dr["sw_if_index"], self.pg0.sw_if_index) self.assertEqual(dr["next_hop"], router_address) # send RA to delete default route packet = self.create_ra_packet(self.pg0, routerlifetime=0) self.pg0.add_stream([packet]) self.pg_start() self.sleep_on_vpp_time(0.1) # check that default route is deleted fib = self.vapi.ip_route_dump(0, True) default_routes = self.get_default_routes(fib) self.assertEqual(len(default_routes), 0) self.sleep_on_vpp_time(0.1) # send RA packet = self.create_ra_packet(self.pg0) self.pg0.add_stream([packet]) self.pg_start() self.sleep_on_vpp_time(0.1) # check FIB for new default route fib = self.vapi.ip_route_dump(0, True) default_routes = self.get_default_routes(fib) self.assertEqual(len(default_routes), 1) dr = default_routes[0] self.assertEqual(dr["sw_if_index"], self.pg0.sw_if_index) self.assertEqual(dr["next_hop"], router_address) # send RA, updating router lifetime to 1s packet = self.create_ra_packet(self.pg0, 1) self.pg0.add_stream([packet]) self.pg_start() self.sleep_on_vpp_time(0.1) # check that default route still exists fib = self.vapi.ip_route_dump(0, True) default_routes = self.get_default_routes(fib) self.assertEqual(len(default_routes), 1) dr = default_routes[0] self.assertEqual(dr["sw_if_index"], self.pg0.sw_if_index) self.assertEqual(dr["next_hop"], router_address) self.sleep_on_vpp_time(1) # check that default route is deleted self.assertTrue(self.wait_for_no_default_route()) # check FIB still contains the SLAAC address addresses = set(self.get_interface_addresses(fib, self.pg0)) new_addresses = addresses.difference(initial_addresses) self.assertEqual(len(new_addresses), 1) prefix = IPv6Network( text_type("%s/%d" % (list(new_addresses)[0], 20)), strict=False ) self.assertEqual(prefix, IPv6Network(text_type("1::/20"))) self.sleep_on_vpp_time(1) # check that SLAAC address is deleted fib = self.vapi.ip_route_dump(0, True) addresses = set(self.get_interface_addresses(fib, self.pg0)) new_addresses = addresses.difference(initial_addresses) self.assertEqual(len(new_addresses), 0) class IPv6NDProxyTest(TestIPv6ND): """IPv6 ND ProxyTest Case""" @classmethod def setUpClass(cls): super(IPv6NDProxyTest, cls).setUpClass() @classmethod def tearDownClass(cls): super(IPv6NDProxyTest, cls).tearDownClass() def setUp(self): super(IPv6NDProxyTest, self).setUp() # create 3 pg interfaces self.create_pg_interfaces(range(3)) # pg0 is the master interface, with the configured subnet self.pg0.admin_up() self.pg0.config_ip6() self.pg0.resolve_ndp() self.pg1.ip6_enable() self.pg2.ip6_enable() def tearDown(self): super(IPv6NDProxyTest, self).tearDown() def test_nd_proxy(self): """IPv6 Proxy ND""" # # Generate some hosts in the subnet that we are proxying # self.pg0.generate_remote_hosts(8) nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6)) d = inet_ntop(AF_INET6, nsma) # # Send an NS for one of those remote hosts on one of the proxy links # expect no response since it's from an address that is not # on the link that has the prefix configured # ns_pg1 = ( Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac) / IPv6(dst=d, src=self.pg0._remote_hosts[2].ip6) / ICMPv6ND_NS(tgt=self.pg0.local_ip6) / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0._remote_hosts[2].mac) ) self.send_and_assert_no_replies(self.pg1, ns_pg1, "Off link NS") # # Add proxy support for the host # self.vapi.ip6nd_proxy_add_del( is_add=1, ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6), sw_if_index=self.pg1.sw_if_index, ) # # try that NS again. this time we expect an NA back # self.send_and_expect_na( self.pg1, ns_pg1, "NS to proxy entry", dst_ip=self.pg0._remote_hosts[2].ip6, tgt_ip=self.pg0.local_ip6, ) # # ... and that we have an entry in the ND cache # self.assertTrue( find_nbr(self, self.pg1.sw_if_index, self.pg0._remote_hosts[2].ip6) ) # # ... and we can route traffic to it # t = ( Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / IPv6(dst=self.pg0._remote_hosts[2].ip6, src=self.pg0.remote_ip6) / inet6.UDP(sport=10000, dport=20000) / Raw(b"\xa5" * 100) ) self.pg0.add_stream(t) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg1.get_capture(1) rx = rx[0] self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac) self.assertEqual(rx[Ether].src, self.pg1.local_mac) self.assertEqual(rx[IPv6].src, t[IPv6].src) self.assertEqual(rx[IPv6].dst, t[IPv6].dst) # # Test we proxy for the host on the main interface # ns_pg0 = ( Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) / IPv6(dst=d, src=self.pg0.remote_ip6) / ICMPv6ND_NS(tgt=self.pg0._remote_hosts[2].ip6) / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac) ) self.send_and_expect_na( self.pg0, ns_pg0, "NS to proxy entry on main", tgt_ip=self.pg0._remote_hosts[2].ip6, dst_ip=self.pg0.remote_ip6, ) # # Setup and resolve proxy for another host on another interface # ns_pg2 = ( Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac) / IPv6(dst=d, src=self.pg0._remote_hosts[3].ip6) / ICMPv6ND_NS(tgt=self.pg0.local_ip6) / ICMPv6NDOptSrcLLAddr(lladdr=self.pg0._remote_hosts[2].mac) ) self.vapi.ip6nd_proxy_add_del( is_add=1, ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6), sw_if_index=self.pg2.sw_if_index, ) self.send_and_expect_na( self.pg2, ns_pg2, "NS to proxy entry other interface", dst_ip=self.pg0._remote_hosts[3].ip6, tgt_ip=self.pg0.local_ip6, ) self.assertTrue( find_nbr(self, self.pg2.sw_if_index, self.pg0._remote_hosts[3].ip6) ) # # hosts can communicate. pg2->pg1 # t2 = ( Ether(dst=self.pg2.local_mac, src=self.pg0.remote_hosts[3].mac) / IPv6(dst=self.pg0._remote_hosts[2].ip6, src=self.pg0._remote_hosts[3].ip6) / inet6.UDP(sport=10000, dport=20000) / Raw(b"\xa5" * 100) ) self.pg2.add_stream(t2) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg1.get_capture(1) rx = rx[0] self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac) self.assertEqual(rx[Ether].src, self.pg1.local_mac) self.assertEqual(rx[IPv6].src, t2[IPv6].src) self.assertEqual(rx[IPv6].dst, t2[IPv6].dst) # # remove the proxy configs # self.vapi.ip6nd_proxy_add_del( ip=inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6), sw_if_index=self.pg1.sw_if_index, is_add=0, ) self.vapi.ip6nd_proxy_add_del( ip=inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6), sw_if_index=self.pg2.sw_if_index, is_add=0, ) self.assertFalse( find_nbr(self, self.pg2.sw_if_index, self.pg0._remote_hosts[3].ip6) ) self.assertFalse( find_nbr(self, self.pg1.sw_if_index, self.pg0._remote_hosts[2].ip6) ) # # no longer proxy-ing... # self.send_and_assert_no_replies(self.pg0, ns_pg0, "Proxy unconfigured") self.send_and_assert_no_replies(self.pg1, ns_pg1, "Proxy unconfigured") self.send_and_assert_no_replies(self.pg2, ns_pg2, "Proxy unconfigured") # # no longer forwarding. traffic generates NS out of the glean/main # interface # self.pg2.add_stream(t2) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(1) self.assertTrue(rx[0].haslayer(ICMPv6ND_NS)) class TestIP6Null(VppTestCase): """IPv6 routes via NULL""" @classmethod def setUpClass(cls): super(TestIP6Null, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIP6Null, cls).tearDownClass() def setUp(self): super(TestIP6Null, self).setUp() # create 2 pg interfaces self.create_pg_interfaces(range(1)) for i in self.pg_interfaces: i.admin_up() i.config_ip6() i.resolve_ndp() def tearDown(self): super(TestIP6Null, self).tearDown() for i in self.pg_interfaces: i.unconfig_ip6() i.admin_down() def test_ip_null(self): """IP NULL route""" p = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, dst="2001::1") / inet6.UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) # # A route via IP NULL that will reply with ICMP unreachables # ip_unreach = VppIpRoute( self, "2001::", 64, [ VppRoutePath( "::", 0xFFFFFFFF, type=FibPathType.FIB_PATH_TYPE_ICMP_UNREACH ) ], ) ip_unreach.add_vpp_config() self.pg0.add_stream(p) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(1) rx = rx[0] icmp = rx[ICMPv6DestUnreach] # 0 = "No route to destination" self.assertEqual(icmp.code, 0) # ICMP is rate limited. pause a bit self.sleep(1) # # A route via IP NULL that will reply with ICMP prohibited # ip_prohibit = VppIpRoute( self, "2001::1", 128, [ VppRoutePath( "::", 0xFFFFFFFF, type=FibPathType.FIB_PATH_TYPE_ICMP_PROHIBIT ) ], ) ip_prohibit.add_vpp_config() self.pg0.add_stream(p) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(1) rx = rx[0] icmp = rx[ICMPv6DestUnreach] # 1 = "Communication with destination administratively prohibited" self.assertEqual(icmp.code, 1) class TestIP6Disabled(VppTestCase): """IPv6 disabled""" @classmethod def setUpClass(cls): super(TestIP6Disabled, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIP6Disabled, cls).tearDownClass() def setUp(self): super(TestIP6Disabled, self).setUp() # create 2 pg interfaces self.create_pg_interfaces(range(2)) # PG0 is IP enabled self.pg0.admin_up() self.pg0.config_ip6() self.pg0.resolve_ndp() # PG 1 is not IP enabled self.pg1.admin_up() def tearDown(self): super(TestIP6Disabled, self).tearDown() for i in self.pg_interfaces: i.unconfig_ip4() i.admin_down() def test_ip_disabled(self): """IP Disabled""" MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t # # An (S,G). # one accepting interface, pg0, 2 forwarding interfaces # route_ff_01 = VppIpMRoute( self, "::", "ffef::1", 128, MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, [ VppMRoutePath( self.pg1.sw_if_index, MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT ), VppMRoutePath( self.pg0.sw_if_index, MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD ), ], ) route_ff_01.add_vpp_config() pu = ( Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / IPv6(src="2001::1", dst=self.pg0.remote_ip6) / inet6.UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) pm = ( Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) / IPv6(src="2001::1", dst="ffef::1") / inet6.UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) # # PG1 does not forward IP traffic # self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled") self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled") # # IP enable PG1 # self.pg1.config_ip6() # # Now we get packets through # self.pg1.add_stream(pu) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(1) self.pg1.add_stream(pm) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(1) # # Disable PG1 # self.pg1.unconfig_ip6() # # PG1 does not forward IP traffic # self.send_and_assert_no_replies(self.pg1, pu, "IPv6 disabled") self.send_and_assert_no_replies(self.pg1, pm, "IPv6 disabled") class TestIP6LoadBalance(VppTestCase): """IPv6 Load-Balancing""" @classmethod def setUpClass(cls): super(TestIP6LoadBalance, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIP6LoadBalance, cls).tearDownClass() def setUp(self): super(TestIP6LoadBalance, self).setUp() self.create_pg_interfaces(range(5)) mpls_tbl = VppMplsTable(self, 0) mpls_tbl.add_vpp_config() for i in self.pg_interfaces: i.admin_up() i.config_ip6() i.resolve_ndp() i.enable_mpls() def tearDown(self): for i in self.pg_interfaces: i.unconfig_ip6() i.admin_down() i.disable_mpls() super(TestIP6LoadBalance, self).tearDown() def test_ip6_load_balance(self): """IPv6 Load-Balancing""" # # An array of packets that differ only in the destination port # - IP only # - MPLS EOS # - MPLS non-EOS # - MPLS non-EOS with an entropy label # port_ip_pkts = [] port_mpls_pkts = [] port_mpls_neos_pkts = [] port_ent_pkts = [] # # An array of packets that differ only in the source address # src_ip_pkts = [] src_mpls_pkts = [] for ii in range(NUM_PKTS): port_ip_hdr = ( IPv6(dst="3000::1", src="3000:1::1") / inet6.UDP(sport=1234, dport=1234 + ii) / Raw(b"\xa5" * 100) ) port_ip_pkts.append( (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / port_ip_hdr) ) port_mpls_pkts.append( ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / MPLS(label=66, ttl=2) / port_ip_hdr ) ) port_mpls_neos_pkts.append( ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / MPLS(label=67, ttl=2) / MPLS(label=77, ttl=2) / port_ip_hdr ) ) port_ent_pkts.append( ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / MPLS(label=67, ttl=2) / MPLS(label=14, ttl=2) / MPLS(label=999, ttl=2) / port_ip_hdr ) ) src_ip_hdr = ( IPv6(dst="3000::1", src="3000:1::%d" % ii) / inet6.UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) src_ip_pkts.append( (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / src_ip_hdr) ) src_mpls_pkts.append( ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / MPLS(label=66, ttl=2) / src_ip_hdr ) ) # # A route for the IP packets # route_3000_1 = VppIpRoute( self, "3000::1", 128, [ VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index), VppRoutePath(self.pg2.remote_ip6, self.pg2.sw_if_index), ], ) route_3000_1.add_vpp_config() # # a local-label for the EOS packets # binding = VppMplsIpBind(self, 66, "3000::1", 128, is_ip6=1) binding.add_vpp_config() # # An MPLS route for the non-EOS packets # route_67 = VppMplsRoute( self, 67, 0, [ VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index, labels=[67]), VppRoutePath(self.pg2.remote_ip6, self.pg2.sw_if_index, labels=[67]), ], ) route_67.add_vpp_config() # # inject the packet on pg0 - expect load-balancing across the 2 paths # - since the default hash config is to use IP src,dst and port # src,dst # We are not going to ensure equal amounts of packets across each link, # since the hash algorithm is statistical and therefore this can never # be guaranteed. But with 64 different packets we do expect some # balancing. So instead just ensure there is traffic on each link. # rx = self.send_and_expect_load_balancing( self.pg0, port_ip_pkts, [self.pg1, self.pg2] ) n_ip_pg0 = len(rx[0]) self.send_and_expect_load_balancing(self.pg0, src_ip_pkts, [self.pg1, self.pg2]) self.send_and_expect_load_balancing( self.pg0, port_mpls_pkts, [self.pg1, self.pg2] ) self.send_and_expect_load_balancing( self.pg0, src_mpls_pkts, [self.pg1, self.pg2] ) rx = self.send_and_expect_load_balancing( self.pg0, port_mpls_neos_pkts, [self.pg1, self.pg2] ) n_mpls_pg0 = len(rx[0]) # # change the router ID and expect the distribution changes # self.vapi.set_ip_flow_hash_router_id(router_id=0x11111111) rx = self.send_and_expect_load_balancing( self.pg0, port_ip_pkts, [self.pg1, self.pg2] ) self.assertNotEqual(n_ip_pg0, len(rx[0])) rx = self.send_and_expect_load_balancing( self.pg0, src_mpls_pkts, [self.pg1, self.pg2] ) self.assertNotEqual(n_mpls_pg0, len(rx[0])) # # The packets with Entropy label in should not load-balance, # since the Entropy value is fixed. # self.send_and_expect_only(self.pg0, port_ent_pkts, self.pg1) # # change the flow hash config so it's only IP src,dst # - now only the stream with differing source address will # load-balance # self.vapi.set_ip_flow_hash( vrf_id=0, src=1, dst=1, proto=1, sport=0, dport=0, is_ipv6=1 ) self.send_and_expect_load_balancing(self.pg0, src_ip_pkts, [self.pg1, self.pg2]) self.send_and_expect_load_balancing( self.pg0, src_mpls_pkts, [self.pg1, self.pg2] ) self.send_and_expect_only(self.pg0, port_ip_pkts, self.pg2) # # change the flow hash config back to defaults # self.vapi.set_ip_flow_hash( vrf_id=0, src=1, dst=1, sport=1, dport=1, proto=1, is_ipv6=1 ) # # Recursive prefixes # - testing that 2 stages of load-balancing occurs and there is no # polarisation (i.e. only 2 of 4 paths are used) # port_pkts = [] src_pkts = [] for ii in range(257): port_pkts.append( ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(dst="4000::1", src="4000:1::1") / inet6.UDP(sport=1234, dport=1234 + ii) / Raw(b"\xa5" * 100) ) ) src_pkts.append( ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(dst="4000::1", src="4000:1::%d" % ii) / inet6.UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) ) route_3000_2 = VppIpRoute( self, "3000::2", 128, [ VppRoutePath(self.pg3.remote_ip6, self.pg3.sw_if_index), VppRoutePath(self.pg4.remote_ip6, self.pg4.sw_if_index), ], ) route_3000_2.add_vpp_config() route_4000_1 = VppIpRoute( self, "4000::1", 128, [VppRoutePath("3000::1", 0xFFFFFFFF), VppRoutePath("3000::2", 0xFFFFFFFF)], ) route_4000_1.add_vpp_config() # # inject the packet on pg0 - expect load-balancing across all 4 paths # self.vapi.cli("clear trace") self.send_and_expect_load_balancing( self.pg0, port_pkts, [self.pg1, self.pg2, self.pg3, self.pg4] ) self.send_and_expect_load_balancing( self.pg0, src_pkts, [self.pg1, self.pg2, self.pg3, self.pg4] ) # # Recursive prefixes # - testing that 2 stages of load-balancing no choices # port_pkts = [] for ii in range(257): port_pkts.append( ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(dst="6000::1", src="6000:1::1") / inet6.UDP(sport=1234, dport=1234 + ii) / Raw(b"\xa5" * 100) ) ) route_5000_2 = VppIpRoute( self, "5000::2", 128, [VppRoutePath(self.pg3.remote_ip6, self.pg3.sw_if_index)], ) route_5000_2.add_vpp_config() route_6000_1 = VppIpRoute( self, "6000::1", 128, [VppRoutePath("5000::2", 0xFFFFFFFF)] ) route_6000_1.add_vpp_config() # # inject the packet on pg0 - expect load-balancing across all 4 paths # self.vapi.cli("clear trace") self.send_and_expect_only(self.pg0, port_pkts, self.pg3) class IP6PuntSetup(object): """Setup for IPv6 Punt Police/Redirect""" def punt_setup(self): self.create_pg_interfaces(range(4)) for i in self.pg_interfaces: i.admin_up() i.config_ip6() i.resolve_ndp() self.pkt = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) / inet6.TCP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) def punt_teardown(self): for i in self.pg_interfaces: i.unconfig_ip6() i.admin_down() class TestIP6Punt(IP6PuntSetup, VppTestCase): """IPv6 Punt Police/Redirect""" def setUp(self): super(TestIP6Punt, self).setUp() super(TestIP6Punt, self).punt_setup() def tearDown(self): super(TestIP6Punt, self).punt_teardown() super(TestIP6Punt, self).tearDown() def test_ip_punt(self): """IP6 punt police and redirect""" pkts = self.pkt * 1025 # # Configure a punt redirect via pg1. # nh_addr = self.pg1.remote_ip6 ip_punt_redirect = VppIpPuntRedirect( self, self.pg0.sw_if_index, self.pg1.sw_if_index, nh_addr ) ip_punt_redirect.add_vpp_config() self.send_and_expect(self.pg0, pkts, self.pg1) # # add a policer # policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, rate_type=1) policer.add_vpp_config() ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index, is_ip6=True) ip_punt_policer.add_vpp_config() self.vapi.cli("clear trace") self.pg0.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) self.pg_start() # # the number of packet received should be greater than 0, # but not equal to the number sent, since some were policed # rx = self.pg1._get_capture(1) stats = policer.get_stats() # Single rate policer - expect conform, violate but no exceed self.assertGreater(stats["conform_packets"], 0) self.assertEqual(stats["exceed_packets"], 0) self.assertGreater(stats["violate_packets"], 0) self.assertGreater(len(rx), 0) self.assertLess(len(rx), len(pkts)) # # remove the policer. back to full rx # ip_punt_policer.remove_vpp_config() policer.remove_vpp_config() self.send_and_expect(self.pg0, pkts, self.pg1) # # remove the redirect. expect full drop. # ip_punt_redirect.remove_vpp_config() self.send_and_assert_no_replies(self.pg0, pkts, "IP no punt config") # # Add a redirect that is not input port selective # ip_punt_redirect = VppIpPuntRedirect( self, 0xFFFFFFFF, self.pg1.sw_if_index, nh_addr ) ip_punt_redirect.add_vpp_config() self.send_and_expect(self.pg0, pkts, self.pg1) ip_punt_redirect.remove_vpp_config() def test_ip_punt_dump(self): """IP6 punt redirect dump""" # # Configure a punt redirects # nh_address = self.pg3.remote_ip6 ipr_03 = VppIpPuntRedirect( self, self.pg0.sw_if_index, self.pg3.sw_if_index, nh_address ) ipr_13 = VppIpPuntRedirect( self, self.pg1.sw_if_index, self.pg3.sw_if_index, nh_address ) ipr_23 = VppIpPuntRedirect( self, self.pg2.sw_if_index, self.pg3.sw_if_index, "0::0" ) ipr_03.add_vpp_config() ipr_13.add_vpp_config() ipr_23.add_vpp_config() # # Dump pg0 punt redirects # self.assertTrue(ipr_03.query_vpp_config()) self.assertTrue(ipr_13.query_vpp_config()) self.assertTrue(ipr_23.query_vpp_config()) # # Dump punt redirects for all interfaces # punts = self.vapi.ip_punt_redirect_dump(0xFFFFFFFF, is_ipv6=1) self.assertEqual(len(punts), 3) for p in punts: self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index) self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6) self.assertEqual(str(punts[2].punt.nh), "::") class TestIP6PuntHandoff(IP6PuntSetup, VppTestCase): """IPv6 Punt Police/Redirect""" vpp_worker_count = 2 def setUp(self): super(TestIP6PuntHandoff, self).setUp() super(TestIP6PuntHandoff, self).punt_setup() def tearDown(self): super(TestIP6PuntHandoff, self).punt_teardown() super(TestIP6PuntHandoff, self).tearDown() def test_ip_punt(self): """IP6 punt policer thread handoff""" pkts = self.pkt * NUM_PKTS # # Configure a punt redirect via pg1. # nh_addr = self.pg1.remote_ip6 ip_punt_redirect = VppIpPuntRedirect( self, self.pg0.sw_if_index, self.pg1.sw_if_index, nh_addr ) ip_punt_redirect.add_vpp_config() action_tx = PolicerAction( VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT, 0 ) # # This policer drops no packets, we are just # testing that they get to the right thread. # policer = VppPolicer( self, "ip6-punt", 400, 0, 10, 0, 1, 0, 0, False, action_tx, action_tx, action_tx, ) policer.add_vpp_config() ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index, is_ip6=True) ip_punt_policer.add_vpp_config() for worker in [0, 1]: self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker) if worker == 0: self.logger.debug(self.vapi.cli("show trace max 100")) # Combined stats, all threads stats = policer.get_stats() # Single rate policer - expect conform, violate but no exceed self.assertGreater(stats["conform_packets"], 0) self.assertEqual(stats["exceed_packets"], 0) self.assertGreater(stats["violate_packets"], 0) # Worker 0, should have done all the policing stats0 = policer.get_stats(worker=0) self.assertEqual(stats, stats0) # Worker 1, should have handed everything off stats1 = policer.get_stats(worker=1) self.assertEqual(stats1["conform_packets"], 0) self.assertEqual(stats1["exceed_packets"], 0) self.assertEqual(stats1["violate_packets"], 0) # Bind the policer to worker 1 and repeat policer.bind_vpp_config(1, True) for worker in [0, 1]: self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker) self.logger.debug(self.vapi.cli("show trace max 100")) # The 2 workers should now have policed the same amount stats = policer.get_stats() stats0 = policer.get_stats(worker=0) stats1 = policer.get_stats(worker=1) self.assertGreater(stats0["conform_packets"], 0) self.assertEqual(stats0["exceed_packets"], 0) self.assertGreater(stats0["violate_packets"], 0) self.assertGreater(stats1["conform_packets"], 0) self.assertEqual(stats1["exceed_packets"], 0) self.assertGreater(stats1["violate_packets"], 0) self.assertEqual( stats0["conform_packets"] + stats1["conform_packets"], stats["conform_packets"], ) self.assertEqual( stats0["violate_packets"] + stats1["violate_packets"], stats["violate_packets"], ) # Unbind the policer and repeat policer.bind_vpp_config(1, False) for worker in [0, 1]: self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker) self.logger.debug(self.vapi.cli("show trace max 100")) # The policer should auto-bind to worker 0 when packets arrive stats = policer.get_stats() stats0new = policer.get_stats(worker=0) stats1new = policer.get_stats(worker=1) self.assertGreater(stats0new["conform_packets"], stats0["conform_packets"]) self.assertEqual(stats0new["exceed_packets"], 0) self.assertGreater(stats0new["violate_packets"], stats0["violate_packets"]) self.assertEqual(stats1, stats1new) # # Clean up # ip_punt_policer.remove_vpp_config() policer.remove_vpp_config() ip_punt_redirect.remove_vpp_config() class TestIP6Deag(VppTestCase): """IPv6 Deaggregate Routes""" @classmethod def setUpClass(cls): super(TestIP6Deag, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIP6Deag, cls).tearDownClass() def setUp(self): super(TestIP6Deag, self).setUp() self.create_pg_interfaces(range(3)) for i in self.pg_interfaces: i.admin_up() i.config_ip6() i.resolve_ndp() def tearDown(self): super(TestIP6Deag, self).tearDown() for i in self.pg_interfaces: i.unconfig_ip6() i.admin_down() def test_ip_deag(self): """IP Deag Routes""" # # Create a table to be used for: # 1 - another destination address lookup # 2 - a source address lookup # table_dst = VppIpTable(self, 1, is_ip6=1) table_src = VppIpTable(self, 2, is_ip6=1) table_dst.add_vpp_config() table_src.add_vpp_config() # # Add a route in the default table to point to a deag/ # second lookup in each of these tables # route_to_dst = VppIpRoute( self, "1::1", 128, [VppRoutePath("::", 0xFFFFFFFF, nh_table_id=1)] ) route_to_src = VppIpRoute( self, "1::2", 128, [ VppRoutePath( "::", 0xFFFFFFFF, nh_table_id=2, type=FibPathType.FIB_PATH_TYPE_SOURCE_LOOKUP, ) ], ) route_to_dst.add_vpp_config() route_to_src.add_vpp_config() # # packets to these destination are dropped, since they'll # hit the respective default routes in the second table # p_dst = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src="5::5", dst="1::1") / inet6.TCP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) p_src = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src="2::2", dst="1::2") / inet6.TCP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) pkts_dst = p_dst * 257 pkts_src = p_src * 257 self.send_and_assert_no_replies(self.pg0, pkts_dst, "IP in dst table") self.send_and_assert_no_replies(self.pg0, pkts_src, "IP in src table") # # add a route in the dst table to forward via pg1 # route_in_dst = VppIpRoute( self, "1::1", 128, [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)], table_id=1, ) route_in_dst.add_vpp_config() self.send_and_expect(self.pg0, pkts_dst, self.pg1) # # add a route in the src table to forward via pg2 # route_in_src = VppIpRoute( self, "2::2", 128, [VppRoutePath(self.pg2.remote_ip6, self.pg2.sw_if_index)], table_id=2, ) route_in_src.add_vpp_config() self.send_and_expect(self.pg0, pkts_src, self.pg2) # # loop in the lookup DP # route_loop = VppIpRoute(self, "3::3", 128, [VppRoutePath("::", 0xFFFFFFFF)]) route_loop.add_vpp_config() p_l = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src="3::4", dst="3::3") / inet6.TCP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) self.send_and_assert_no_replies(self.pg0, p_l * 257, "IP lookup loop") class TestIP6Input(VppTestCase): """IPv6 Input Exception Test Cases""" @classmethod def setUpClass(cls): super(TestIP6Input, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIP6Input, cls).tearDownClass() def setUp(self): super(TestIP6Input, self).setUp() self.create_pg_interfaces(range(2)) for i in self.pg_interfaces: i.admin_up() i.config_ip6() i.resolve_ndp() def tearDown(self): super(TestIP6Input, self).tearDown() for i in self.pg_interfaces: i.unconfig_ip6() i.admin_down() def test_ip_input_icmp_reply(self): """IP6 Input Exception - Return ICMP (3,0)""" # # hop limit - ICMP replies # p_version = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6, hlim=1) / inet6.UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) rxs = self.send_and_expect_some(self.pg0, p_version * NUM_PKTS, self.pg0) for rx in rxs: icmp = rx[ICMPv6TimeExceeded] # 0: "hop limit exceeded in transit", self.assertEqual((icmp.type, icmp.code), (3, 0)) icmpv6_data = "\x0a" * 18 all_0s = "::" all_1s = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF" @parameterized.expand( [ # Name, src, dst, l4proto, msg, timeout ( "src='iface', dst='iface'", None, None, inet6.UDP(sport=1234, dport=1234), "funky version", None, ), ( "src='All 0's', dst='iface'", all_0s, None, ICMPv6EchoRequest(id=0xB, seq=5, data=icmpv6_data), None, 0.1, ), ( "src='iface', dst='All 0's'", None, all_0s, ICMPv6EchoRequest(id=0xB, seq=5, data=icmpv6_data), None, 0.1, ), ( "src='All 1's', dst='iface'", all_1s, None, ICMPv6EchoRequest(id=0xB, seq=5, data=icmpv6_data), None, 0.1, ), ( "src='iface', dst='All 1's'", None, all_1s, ICMPv6EchoRequest(id=0xB, seq=5, data=icmpv6_data), None, 0.1, ), ( "src='All 1's', dst='All 1's'", all_1s, all_1s, ICMPv6EchoRequest(id=0xB, seq=5, data=icmpv6_data), None, 0.1, ), ] ) def test_ip_input_no_replies(self, name, src, dst, l4, msg, timeout): self._testMethodDoc = "IPv6 Input Exception - %s" % name p_version = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6( src=src or self.pg0.remote_ip6, dst=dst or self.pg1.remote_ip6, version=3, ) / l4 / Raw(b"\xa5" * 100) ) self.send_and_assert_no_replies( self.pg0, p_version * NUM_PKTS, remark=msg or "", timeout=timeout ) def test_hop_by_hop(self): """Hop-by-hop header test""" p = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) / IPv6ExtHdrHopByHop() / inet6.UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) self.pg0.add_stream(p) self.pg_enable_capture(self.pg_interfaces) self.pg_start() class TestIP6Replace(VppTestCase): """IPv6 Table Replace""" @classmethod def setUpClass(cls): super(TestIP6Replace, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIP6Replace, cls).tearDownClass() def setUp(self): super(TestIP6Replace, self).setUp() self.create_pg_interfaces(range(4)) table_id = 1 self.tables = [] for i in self.pg_interfaces: i.admin_up() i.config_ip6() i.generate_remote_hosts(2) self.tables.append(VppIpTable(self, table_id, True).add_vpp_config()) table_id += 1 def tearDown(self): super(TestIP6Replace, self).tearDown() for i in self.pg_interfaces: i.admin_down() i.unconfig_ip6() def test_replace(self): """IP Table Replace""" MRouteItfFlags = VppEnum.vl_api_mfib_itf_flags_t MRouteEntryFlags = VppEnum.vl_api_mfib_entry_flags_t N_ROUTES = 20 links = [self.pg0, self.pg1, self.pg2, self.pg3] routes = [[], [], [], []] # the sizes of 'empty' tables for t in self.tables: self.assertEqual(len(t.dump()), 2) self.assertEqual(len(t.mdump()), 5) # load up the tables with some routes for ii, t in enumerate(self.tables): for jj in range(1, N_ROUTES): uni = VppIpRoute( self, "2001::%d" % jj if jj != 0 else "2001::", 128, [ VppRoutePath( links[ii].remote_hosts[0].ip6, links[ii].sw_if_index ), VppRoutePath( links[ii].remote_hosts[1].ip6, links[ii].sw_if_index ), ], table_id=t.table_id, ).add_vpp_config() multi = VppIpMRoute( self, "::", "ff:2001::%d" % jj, 128, MRouteEntryFlags.MFIB_API_ENTRY_FLAG_NONE, [ VppMRoutePath( self.pg0.sw_if_index, MRouteItfFlags.MFIB_API_ITF_FLAG_ACCEPT, proto=FibPathProto.FIB_PATH_NH_PROTO_IP6, ), VppMRoutePath( self.pg1.sw_if_index, MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD, proto=FibPathProto.FIB_PATH_NH_PROTO_IP6, ), VppMRoutePath( self.pg2.sw_if_index, MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD, proto=FibPathProto.FIB_PATH_NH_PROTO_IP6, ), VppMRoutePath( self.pg3.sw_if_index, MRouteItfFlags.MFIB_API_ITF_FLAG_FORWARD, proto=FibPathProto.FIB_PATH_NH_PROTO_IP6, ), ], table_id=t.table_id, ).add_vpp_config() routes[ii].append({"uni": uni, "multi": multi}) # # replace the tables a few times # for kk in range(3): # replace each table for t in self.tables: t.replace_begin() # all the routes are still there for ii, t in enumerate(self.tables): dump = t.dump() mdump = t.mdump() for r in routes[ii]: self.assertTrue(find_route_in_dump(dump, r["uni"], t)) self.assertTrue(find_mroute_in_dump(mdump, r["multi"], t)) # redownload the even numbered routes for ii, t in enumerate(self.tables): for jj in range(0, N_ROUTES, 2): routes[ii][jj]["uni"].add_vpp_config() routes[ii][jj]["multi"].add_vpp_config() # signal each table converged for t in self.tables: t.replace_end() # we should find the even routes, but not the odd for ii, t in enumerate(self.tables): dump = t.dump() mdump = t.mdump() for jj in range(0, N_ROUTES, 2): self.assertTrue(find_route_in_dump(dump, routes[ii][jj]["uni"], t)) self.assertTrue( find_mroute_in_dump(mdump, routes[ii][jj]["multi"], t) ) for jj in range(1, N_ROUTES - 1, 2): self.assertFalse(find_route_in_dump(dump, routes[ii][jj]["uni"], t)) self.assertFalse( find_mroute_in_dump(mdump, routes[ii][jj]["multi"], t) ) # reload all the routes for ii, t in enumerate(self.tables): for r in routes[ii]: r["uni"].add_vpp_config() r["multi"].add_vpp_config() # all the routes are still there for ii, t in enumerate(self.tables): dump = t.dump() mdump = t.mdump() for r in routes[ii]: self.assertTrue(find_route_in_dump(dump, r["uni"], t)) self.assertTrue(find_mroute_in_dump(mdump, r["multi"], t)) # # finally flush the tables for good measure # for t in self.tables: t.flush() self.assertEqual(len(t.dump()), 2) self.assertEqual(len(t.mdump()), 5) class TestIP6AddrReplace(VppTestCase): """IPv6 Interface Address Replace""" @classmethod def setUpClass(cls): super(TestIP6AddrReplace, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIP6AddrReplace, cls).tearDownClass() def setUp(self): super(TestIP6AddrReplace, self).setUp() self.create_pg_interfaces(range(4)) for i in self.pg_interfaces: i.admin_up() def tearDown(self): super(TestIP6AddrReplace, self).tearDown() for i in self.pg_interfaces: i.admin_down() def get_n_pfxs(self, intf): return len(self.vapi.ip_address_dump(intf.sw_if_index, True)) def test_replace(self): """IP interface address replace""" intf_pfxs = [[], [], [], []] # add prefixes to each of the interfaces for i in range(len(self.pg_interfaces)): intf = self.pg_interfaces[i] # 2001:16:x::1/64 addr = "2001:16:%d::1" % intf.sw_if_index a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config() intf_pfxs[i].append(a) # 2001:16:x::2/64 - a different address in the same subnet as above addr = "2001:16:%d::2" % intf.sw_if_index a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config() intf_pfxs[i].append(a) # 2001:15:x::2/64 - a different address and subnet addr = "2001:15:%d::2" % intf.sw_if_index a = VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config() intf_pfxs[i].append(a) # a dump should n_address in it for intf in self.pg_interfaces: self.assertEqual(self.get_n_pfxs(intf), 3) # # remove all the address thru a replace # self.vapi.sw_interface_address_replace_begin() self.vapi.sw_interface_address_replace_end() for intf in self.pg_interfaces: self.assertEqual(self.get_n_pfxs(intf), 0) # # add all the interface addresses back # for p in intf_pfxs: for v in p: v.add_vpp_config() for intf in self.pg_interfaces: self.assertEqual(self.get_n_pfxs(intf), 3) # # replace again, but this time update/re-add the address on the first # two interfaces # self.vapi.sw_interface_address_replace_begin() for p in intf_pfxs[:2]: for v in p: v.add_vpp_config() self.vapi.sw_interface_address_replace_end() # on the first two the address still exist, # on the other two they do not for intf in self.pg_interfaces[:2]: self.assertEqual(self.get_n_pfxs(intf), 3) for p in intf_pfxs[:2]: for v in p: self.assertTrue(v.query_vpp_config()) for intf in self.pg_interfaces[2:]: self.assertEqual(self.get_n_pfxs(intf), 0) # # add all the interface addresses back on the last two # for p in intf_pfxs[2:]: for v in p: v.add_vpp_config() for intf in self.pg_interfaces: self.assertEqual(self.get_n_pfxs(intf), 3) # # replace again, this time add different prefixes on all the interfaces # self.vapi.sw_interface_address_replace_begin() pfxs = [] for intf in self.pg_interfaces: # 2001:18:x::1/64 addr = "2001:18:%d::1" % intf.sw_if_index pfxs.append(VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()) self.vapi.sw_interface_address_replace_end() # only .18 should exist on each interface for intf in self.pg_interfaces: self.assertEqual(self.get_n_pfxs(intf), 1) for pfx in pfxs: self.assertTrue(pfx.query_vpp_config()) # # remove everything # self.vapi.sw_interface_address_replace_begin() self.vapi.sw_interface_address_replace_end() for intf in self.pg_interfaces: self.assertEqual(self.get_n_pfxs(intf), 0) # # add prefixes to each interface. post-begin add the prefix from # interface X onto interface Y. this would normally be an error # since it would generate a 'duplicate address' warning. but in # this case, since what is newly downloaded is sane, it's ok # for intf in self.pg_interfaces: # 2001:18:x::1/64 addr = "2001:18:%d::1" % intf.sw_if_index VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config() self.vapi.sw_interface_address_replace_begin() pfxs = [] for intf in self.pg_interfaces: # 2001:18:x::1/64 addr = "2001:18:%d::1" % (intf.sw_if_index + 1) pfxs.append(VppIpInterfaceAddress(self, intf, addr, 64).add_vpp_config()) self.vapi.sw_interface_address_replace_end() self.logger.info(self.vapi.cli("sh int addr")) for intf in self.pg_interfaces: self.assertEqual(self.get_n_pfxs(intf), 1) for pfx in pfxs: self.assertTrue(pfx.query_vpp_config()) class TestIP6LinkLocal(VppTestCase): """IPv6 Link Local""" @classmethod def setUpClass(cls): super(TestIP6LinkLocal, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIP6LinkLocal, cls).tearDownClass() def setUp(self): super(TestIP6LinkLocal, self).setUp() self.create_pg_interfaces(range(2)) for i in self.pg_interfaces: i.admin_up() def tearDown(self): super(TestIP6LinkLocal, self).tearDown() for i in self.pg_interfaces: i.admin_down() def test_ip6_ll(self): """IPv6 Link Local""" # # two APIs to add a link local address. # 1 - just like any other prefix # 2 - with the special set LL API # # # First with the API to set a 'normal' prefix # ll1 = "fe80:1::1" ll2 = "fe80:2::2" ll3 = "fe80:3::3" VppNeighbor( self, self.pg0.sw_if_index, self.pg0.remote_mac, ll2 ).add_vpp_config() VppIpInterfaceAddress(self, self.pg0, ll1, 128).add_vpp_config() # # should be able to ping the ll # p_echo_request_1 = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=ll2, dst=ll1) / ICMPv6EchoRequest() ) self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0) # # change the link-local on pg0 # v_ll3 = VppIpInterfaceAddress(self, self.pg0, ll3, 128).add_vpp_config() p_echo_request_3 = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=ll2, dst=ll3) / ICMPv6EchoRequest() ) self.send_and_expect(self.pg0, [p_echo_request_3], self.pg0) # # set a normal v6 prefix on the link # self.pg0.config_ip6() self.send_and_expect(self.pg0, [p_echo_request_3], self.pg0) # the link-local cannot be removed with self.vapi.assert_negative_api_retval(): v_ll3.remove_vpp_config() # # Use the specific link-local API on pg1 # VppIp6LinkLocalAddress(self, self.pg1, ll1).add_vpp_config() self.send_and_expect(self.pg1, [p_echo_request_1], self.pg1) VppIp6LinkLocalAddress(self, self.pg1, ll3).add_vpp_config() self.send_and_expect(self.pg1, [p_echo_request_3], self.pg1) def test_ip6_ll_p2p(self): """IPv6 Link Local P2P (GRE)""" self.pg0.config_ip4() self.pg0.resolve_arp() gre_if = VppGreInterface( self, self.pg0.local_ip4, self.pg0.remote_ip4 ).add_vpp_config() gre_if.admin_up() ll1 = "fe80:1::1" ll2 = "fe80:2::2" VppIpInterfaceAddress(self, gre_if, ll1, 128).add_vpp_config() self.logger.info(self.vapi.cli("sh ip6-ll gre0 fe80:2::2")) p_echo_request_1 = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) / GRE() / IPv6(src=ll2, dst=ll1) / ICMPv6EchoRequest() ) self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0) self.pg0.unconfig_ip4() gre_if.remove_vpp_config() def test_ip6_ll_p2mp(self): """IPv6 Link Local P2MP (GRE)""" self.pg0.config_ip4() self.pg0.resolve_arp() gre_if = VppGreInterface( self, self.pg0.local_ip4, "0.0.0.0", mode=(VppEnum.vl_api_tunnel_mode_t.TUNNEL_API_MODE_MP), ).add_vpp_config() gre_if.admin_up() ll1 = "fe80:1::1" ll2 = "fe80:2::2" VppIpInterfaceAddress(self, gre_if, ll1, 128).add_vpp_config() p_echo_request_1 = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) / GRE() / IPv6(src=ll2, dst=ll1) / ICMPv6EchoRequest() ) # no route back at this point self.send_and_assert_no_replies(self.pg0, [p_echo_request_1]) # add teib entry for the peer teib = VppTeib(self, gre_if, ll2, self.pg0.remote_ip4) teib.add_vpp_config() self.logger.info(self.vapi.cli("sh ip6-ll gre0 %s" % ll2)) self.send_and_expect(self.pg0, [p_echo_request_1], self.pg0) # teardown self.pg0.unconfig_ip4() class TestIPv6PathMTU(VppTestCase): """IPv6 Path MTU""" def setUp(self): super(TestIPv6PathMTU, self).setUp() self.create_pg_interfaces(range(2)) # setup all interfaces for i in self.pg_interfaces: i.admin_up() i.config_ip6() i.resolve_ndp() def tearDown(self): super(TestIPv6PathMTU, self).tearDown() for i in self.pg_interfaces: i.unconfig_ip6() i.admin_down() def test_path_mtu_local(self): """Path MTU for attached neighbour""" self.vapi.cli("set log class ip level debug") # # The goal here is not test that fragmentation works correctly, # that's done elsewhere, the intent is to ensure that the Path MTU # settings are honoured. # # # IPv6 will only frag locally generated packets, so use tunnelled # packets post encap # tun = VppIpIpTunInterface( self, self.pg1, self.pg1.local_ip6, self.pg1.remote_ip6 ) tun.add_vpp_config() tun.admin_up() tun.config_ip6() # set the interface MTU to a reasonable value self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2800, 0, 0, 0]) p_6k = ( Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6) / UDP(sport=1234, dport=5678) / Raw(b"0xa" * 2000) ) p_2k = ( Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6) / UDP(sport=1234, dport=5678) / Raw(b"0xa" * 1000) ) p_1k = ( Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6) / UDP(sport=1234, dport=5678) / Raw(b"0xa" * 600) ) nbr = VppNeighbor( self, self.pg1.sw_if_index, self.pg1.remote_mac, self.pg1.remote_ip6 ).add_vpp_config() # this is now the interface MTU frags self.send_and_expect(self.pg0, [p_6k], self.pg1, n_rx=4) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2) self.send_and_expect(self.pg0, [p_1k], self.pg1) # drop the path MTU for this neighbour to below the interface MTU # expect more frags pmtu = VppIpPathMtu(self, self.pg1.remote_ip6, 1300).add_vpp_config() # print/format the adj delegate and trackers self.logger.info(self.vapi.cli("sh ip pmtu")) self.logger.info(self.vapi.cli("sh adj 7")) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3) self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2) # increase the path MTU to more than the interface # expect to use the interface MTU pmtu.modify(8192) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2) self.send_and_expect(self.pg0, [p_1k], self.pg1) # go back to an MTU from the path pmtu.modify(1300) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3) self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2) # raise the interface's MTU # should still use that of the path self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2000, 0, 0, 0]) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3) self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2) # set path high and interface low pmtu.modify(2000) self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1300, 0, 0, 0]) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3) self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2) # remove the path MTU self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2800, 0, 0, 0]) pmtu.modify(0) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2) self.send_and_expect(self.pg0, [p_1k], self.pg1) def test_path_mtu_remote(self): """Path MTU for remote neighbour""" self.vapi.cli("set log class ip level debug") # # The goal here is not test that fragmentation works correctly, # that's done elsewhere, the intent is to ensure that the Path MTU # settings are honoured. # tun_dst = "2001::1" route = VppIpRoute( self, tun_dst, 64, [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)] ).add_vpp_config() # # IPv6 will only frag locally generated packets, so use tunnelled # packets post encap # tun = VppIpIpTunInterface(self, self.pg1, self.pg1.local_ip6, tun_dst) tun.add_vpp_config() tun.admin_up() tun.config_ip6() # set the interface MTU to a reasonable value self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2800, 0, 0, 0]) p_2k = ( Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6) / UDP(sport=1234, dport=5678) / Raw(b"0xa" * 1000) ) p_1k = ( Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6) / UDP(sport=1234, dport=5678) / Raw(b"0xa" * 600) ) nbr = VppNeighbor( self, self.pg1.sw_if_index, self.pg1.remote_mac, self.pg1.remote_ip6 ).add_vpp_config() # this is now the interface MTU frags self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2) self.send_and_expect(self.pg0, [p_1k], self.pg1) # drop the path MTU for this neighbour to below the interface MTU # expect more frags pmtu = VppIpPathMtu(self, tun_dst, 1300).add_vpp_config() # print/format the fib entry/dpo self.logger.info(self.vapi.cli("sh ip6 fib 2001::1")) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3) self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2) # increase the path MTU to more than the interface # expect to use the interface MTU pmtu.modify(8192) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2) self.send_and_expect(self.pg0, [p_1k], self.pg1) # go back to an MTU from the path pmtu.modify(1300) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3) self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2) # raise the interface's MTU # should still use that of the path self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2000, 0, 0, 0]) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3) self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2) # turn the tun_dst into an attached neighbour route.modify([VppRoutePath("::", self.pg1.sw_if_index)]) nbr2 = VppNeighbor( self, self.pg1.sw_if_index, self.pg1.remote_mac, tun_dst ).add_vpp_config() self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3) self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2) # add back to not attached nbr2.remove_vpp_config() route.modify([VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)]) # set path high and interface low pmtu.modify(2000) self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1300, 0, 0, 0]) self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3) self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2) # remove the path MTU self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2800, 0, 0, 0]) pmtu.remove_vpp_config() self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2) self.send_and_expect(self.pg0, [p_1k], self.pg1) class TestIPFibSource(VppTestCase): """IPv6 Table FibSource""" @classmethod def setUpClass(cls): super(TestIPFibSource, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIPFibSource, cls).tearDownClass() def setUp(self): super(TestIPFibSource, self).setUp() self.create_pg_interfaces(range(2)) for i in self.pg_interfaces: i.admin_up() i.config_ip6() i.resolve_arp() i.generate_remote_hosts(2) i.configure_ipv6_neighbors() def tearDown(self): super(TestIPFibSource, self).tearDown() for i in self.pg_interfaces: i.admin_down() i.unconfig_ip4() def test_fib_source(self): """IP Table FibSource""" routes = self.vapi.ip_route_v2_dump(0, True) # 2 interfaces (4 routes) + 2 specials + 4 neighbours = 10 routes self.assertEqual(len(routes), 10) # dump all the sources in the FIB sources = self.vapi.fib_source_dump() for source in sources: if source.src.name == "API": api_source = source.src if source.src.name == "interface": intf_source = source.src if source.src.name == "adjacency": adj_source = source.src if source.src.name == "special": special_source = source.src if source.src.name == "default-route": dr_source = source.src # dump the individual route types routes = self.vapi.ip_route_v2_dump(0, True, src=adj_source.id) self.assertEqual(len(routes), 4) routes = self.vapi.ip_route_v2_dump(0, True, src=intf_source.id) self.assertEqual(len(routes), 4) routes = self.vapi.ip_route_v2_dump(0, True, src=special_source.id) self.assertEqual(len(routes), 1) routes = self.vapi.ip_route_v2_dump(0, True, src=dr_source.id) self.assertEqual(len(routes), 1) # add a new soure that'a better than the API self.vapi.fib_source_add( src={"name": "bgp", "priority": api_source.priority - 1} ) # dump all the sources to check our new one is there sources = self.vapi.fib_source_dump() for source in sources: if source.src.name == "bgp": bgp_source = source.src self.assertTrue(bgp_source) self.assertEqual(bgp_source.priority, api_source.priority - 1) # add a route with the default API source r1 = VppIpRouteV2( self, "2001::1", 128, [VppRoutePath(self.pg0.remote_ip6, self.pg0.sw_if_index)], ).add_vpp_config() r2 = VppIpRouteV2( self, "2001::1", 128, [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)], src=bgp_source.id, ).add_vpp_config() # ensure the BGP source takes priority p = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, dst="2001::1") / inet6.UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) self.send_and_expect(self.pg0, [p], self.pg1) r2.remove_vpp_config() r1.remove_vpp_config() self.assertFalse(find_route(self, "2001::1", 128)) class TestIPxAF(VppTestCase): """IP cross AF""" @classmethod def setUpClass(cls): super(TestIPxAF, cls).setUpClass() @classmethod def tearDownClass(cls): super(TestIPxAF, cls).tearDownClass() def setUp(self): super(TestIPxAF, self).setUp() self.create_pg_interfaces(range(2)) for i in self.pg_interfaces: i.admin_up() i.config_ip6() i.config_ip4() i.resolve_arp() i.resolve_ndp() def tearDown(self): super(TestIPxAF, self).tearDown() for i in self.pg_interfaces: i.admin_down() i.unconfig_ip4() i.unconfig_ip6() def test_x_af(self): """Cross AF routing""" N_PKTS = 63 # a v4 route via a v6 attached next-hop VppIpRoute( self, "1.1.1.1", 32, [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)], ).add_vpp_config() p = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg0.remote_ip4, dst="1.1.1.1") / UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1) for rx in rxs: self.assertEqual(rx[IP].dst, "1.1.1.1") # a v6 route via a v4 attached next-hop VppIpRoute( self, "2001::1", 128, [VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index)], ).add_vpp_config() p = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, dst="2001::1") / UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1) for rx in rxs: self.assertEqual(rx[IPv6].dst, "2001::1") # a recursive v4 route via a v6 next-hop (from above) VppIpRoute( self, "2.2.2.2", 32, [VppRoutePath("2001::1", 0xFFFFFFFF)] ).add_vpp_config() p = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg0.remote_ip4, dst="2.2.2.2") / UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1) # a recursive v4 route via a v6 next-hop VppIpRoute( self, "2.2.2.3", 32, [VppRoutePath(self.pg1.remote_ip6, 0xFFFFFFFF)] ).add_vpp_config() p = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg0.remote_ip4, dst="2.2.2.3") / UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1) # a recursive v6 route via a v4 next-hop VppIpRoute( self, "3001::1", 128, [VppRoutePath(self.pg1.remote_ip4, 0xFFFFFFFF)] ).add_vpp_config() p = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, dst="3001::1") / UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1) for rx in rxs: self.assertEqual(rx[IPv6].dst, "3001::1") VppIpRoute( self, "3001::2", 128, [VppRoutePath("1.1.1.1", 0xFFFFFFFF)] ).add_vpp_config() p = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, dst="3001::2") / UDP(sport=1234, dport=1234) / Raw(b"\xa5" * 100) ) rxs = self.send_and_expect(self.pg0, p * N_PKTS, self.pg1) for rx in rxs: self.assertEqual(rx[IPv6].dst, "3001::2") class TestIPv6Punt(VppTestCase): """IPv6 Punt Police/Redirect""" def setUp(self): super(TestIPv6Punt, self).setUp() self.create_pg_interfaces(range(4)) for i in self.pg_interfaces: i.admin_up() i.config_ip6() i.resolve_ndp() def tearDown(self): super(TestIPv6Punt, self).tearDown() for i in self.pg_interfaces: i.unconfig_ip6() i.admin_down() def test_ip6_punt(self): """IPv6 punt police and redirect""" # use UDP packet that have a port we need to explicitly # register to get punted. pt_l4 = VppEnum.vl_api_punt_type_t.PUNT_API_TYPE_L4 af_ip6 = VppEnum.vl_api_address_family_t.ADDRESS_IP6 udp_proto = VppEnum.vl_api_ip_proto_t.IP_API_PROTO_UDP punt_udp = { "type": pt_l4, "punt": { "l4": { "af": af_ip6, "protocol": udp_proto, "port": 7654, } }, } self.vapi.set_punt(is_add=1, punt=punt_udp) pkts = ( Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) / UDP(sport=1234, dport=7654) / Raw(b"\xa5" * 100) ) * 1025 # # Configure a punt redirect via pg1. # nh_addr = self.pg1.remote_ip6 ip_punt_redirect = VppIpPuntRedirect( self, self.pg0.sw_if_index, self.pg1.sw_if_index, nh_addr ) ip_punt_redirect.add_vpp_config() self.send_and_expect(self.pg0, pkts, self.pg1) # # add a policer # policer = VppPolicer(self, "ip6-punt", 400, 0, 10, 0, rate_type=1) policer.add_vpp_config() ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index, is_ip6=True) ip_punt_policer.add_vpp_config() self.vapi.cli("clear trace") self.pg0.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) self.pg_start() # # the number of packet received should be greater than 0, # but not equal to the number sent, since some were policed # rx = self.pg1._get_capture(1) stats = policer.get_stats() # Single rate policer - expect conform, violate but no exceed self.assertGreater(stats["conform_packets"], 0) self.assertEqual(stats["exceed_packets"], 0) self.assertGreater(stats["violate_packets"], 0) self.assertGreater(len(rx), 0) self.assertLess(len(rx), len(pkts)) # # remove the policer. back to full rx # ip_punt_policer.remove_vpp_config() policer.remove_vpp_config() self.send_and_expect(self.pg0, pkts, self.pg1) # # remove the redirect. expect full drop. # ip_punt_redirect.remove_vpp_config() self.send_and_assert_no_replies(self.pg0, pkts, "IP no punt config") # # Add a redirect that is not input port selective # ip_punt_redirect = VppIpPuntRedirect( self, 0xFFFFFFFF, self.pg1.sw_if_index, nh_addr ) ip_punt_redirect.add_vpp_config() self.send_and_expect(self.pg0, pkts, self.pg1) ip_punt_redirect.remove_vpp_config() def test_ip6_punt_dump(self): """IPv6 punt redirect dump""" # # Configure a punt redirects # nh_address = self.pg3.remote_ip6 ipr_03 = VppIpPuntRedirect( self, self.pg0.sw_if_index, self.pg3.sw_if_index, nh_address ) ipr_13 = VppIpPuntRedirect( self, self.pg1.sw_if_index, self.pg3.sw_if_index, nh_address ) ipr_23 = VppIpPuntRedirect( self, self.pg2.sw_if_index, self.pg3.sw_if_index, "::" ) ipr_03.add_vpp_config() ipr_13.add_vpp_config() ipr_23.add_vpp_config() # # Dump pg0 punt redirects # self.assertTrue(ipr_03.query_vpp_config()) self.assertTrue(ipr_13.query_vpp_config()) self.assertTrue(ipr_23.query_vpp_config()) # # Dump punt redirects for all interfaces # punts = self.vapi.ip_punt_redirect_dump(sw_if_index=0xFFFFFFFF, is_ipv6=True) self.assertEqual(len(punts), 3) for p in punts: self.assertEqual(p.punt.tx_sw_if_index, self.pg3.sw_if_index) self.assertNotEqual(punts[1].punt.nh, self.pg3.remote_ip6) self.assertEqual(str(punts[2].punt.nh), "::") if __name__ == "__main__": unittest.main(testRunner=VppTestRunner)