_(OVERSIZED_HEADER, "buffer with oversized header (dropped)") \
_(NO_TAIL_SPACE, "no enough buffer tail space (dropped)") \
_(TUN_NO_PROTO, "no tunnel protocol") \
+ _(UNSUP_PAYLOAD, "unsupported payload") \
typedef enum
b += 1;
}
- vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
- current_sa_index, current_sa_pkts,
- current_sa_bytes);
+ if (PREDICT_TRUE (~0 != current_sa_index))
+ vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
+ current_sa_index, current_sa_pkts,
+ current_sa_bytes);
if ((n = vec_len (ptd->integ_ops)))
{
next[0] = ESP_DECRYPT_NEXT_IP6_INPUT;
break;
default:
+ b[0]->error =
+ node->errors[ESP_DECRYPT_ERROR_UNSUP_PAYLOAD];
next[0] = ESP_DECRYPT_NEXT_DROP;
break;
}
else
{
next[0] = ESP_DECRYPT_NEXT_DROP;
- b[0]->error =
- node->errors[ESP_DECRYPT_ERROR_DECRYPTION_FAILED];
+ b[0]->error = node->errors[ESP_DECRYPT_ERROR_UNSUP_PAYLOAD];
goto trace;
}
}
if (ipsec_sa_is_set_IS_PROTECT (sa0))
{
/*
- * Check that the reveal IP header matches that
- * of the tunnel we are protecting
+ * There are two encap possibilities
+ * 1) the tunnel and ths SA are prodiving encap, i.e. it's
+ * MAC | SA-IP | TUN-IP | ESP | PAYLOAD
+ * implying the SA is in tunnel mode (on a tunnel interface)
+ * 2) only the tunnel provides encap
+ * MAC | TUN-IP | ESP | PAYLOAD
+ * implying the SA is in transport mode.
+ *
+ * For 2) we need only strip the tunnel encap and we're good.
+ * since the tunnel and crypto ecnap (int the tun=protect
+ * object) are the same and we verified above that these match
+ * for 1) we need to strip the SA-IP outer headers, to
+ * reveal the tunnel IP and then check that this matches
+ * the configured tunnel.
*/
const ipsec_tun_protect_t *itp;
}
static_always_inline u8
-esp_get_ip6_hdr_len (ip6_header_t * ip6)
+esp_get_ip6_hdr_len (ip6_header_t * ip6, ip6_ext_header_t ** ext_hdr)
{
/* this code assumes that HbH, route and frag headers will be before
others, if that is not the case, they will end up encrypted */
-
u8 len = sizeof (ip6_header_t);
ip6_ext_header_t *p;
/* if next packet doesn't have ext header */
if (ext_hdr_is_pre_esp (ip6->protocol) == 0)
- return len;
+ {
+ *ext_hdr = NULL;
+ return len;
+ }
p = (void *) (ip6 + 1);
len += ip6_ext_header_len (p);
p = ip6_ext_next_header (p);
}
+ *ext_hdr = p;
return len;
}
else /* transport mode */
{
u8 *l2_hdr, l2_len, *ip_hdr, ip_len;
+ ip6_ext_header_t *ext_hdr;
udp_header_t *udp = 0;
u8 *old_ip_hdr = vlib_buffer_get_current (b[0]);
ip_len = is_ip6 ?
- esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr) :
+ esp_get_ip6_hdr_len ((ip6_header_t *) old_ip_hdr, &ext_hdr) :
ip4_header_bytes ((ip4_header_t *) old_ip_hdr);
vlib_buffer_advance (b[0], ip_len);
else
l2_len = 0;
- clib_memcpy_le64 (ip_hdr, old_ip_hdr, ip_len);
-
if (is_ip6)
{
- ip6_header_t *ip6 = (ip6_header_t *) (ip_hdr);
- *next_hdr_ptr = ip6->protocol;
- ip6->protocol = IP_PROTOCOL_IPSEC_ESP;
+ ip6_header_t *ip6 = (ip6_header_t *) (old_ip_hdr);
+ if (PREDICT_TRUE (NULL == ext_hdr))
+ {
+ *next_hdr_ptr = ip6->protocol;
+ ip6->protocol = IP_PROTOCOL_IPSEC_ESP;
+ }
+ else
+ {
+ *next_hdr_ptr = ext_hdr->next_hdr;
+ ext_hdr->next_hdr = IP_PROTOCOL_IPSEC_ESP;
+ }
ip6->payload_length =
clib_host_to_net_u16 (payload_len + hdr_len - l2_len -
- ip_len);
+ sizeof (ip6_header_t));
}
else
{
u16 len;
- ip4_header_t *ip4 = (ip4_header_t *) (ip_hdr);
+ ip4_header_t *ip4 = (ip4_header_t *) (old_ip_hdr);
*next_hdr_ptr = ip4->protocol;
len = payload_len + hdr_len - l2_len;
if (udp)
esp_update_ip4_hdr (ip4, len, /* is_transport */ 1, 0);
}
+ clib_memcpy_le64 (ip_hdr, old_ip_hdr, ip_len);
+
if (!is_tun)
next[0] = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT;
}
&b->esp6_decrypt_node_index, &b->esp6_decrypt_next_index);
ipsec_add_feature ("ip4-output", esp4_encrypt_node_tun_name,
- &b->esp4_encrypt_tun_feature_index);
+ &b->esp44_encrypt_tun_feature_index);
+ ipsec_add_feature ("ip4-output", esp6_encrypt_node_tun_name,
+ &b->esp46_encrypt_tun_feature_index);
ipsec_add_feature ("ip6-output", esp6_encrypt_node_tun_name,
- &b->esp6_encrypt_tun_feature_index);
+ &b->esp66_encrypt_tun_feature_index);
+ ipsec_add_feature ("ip6-output", esp4_encrypt_node_tun_name,
+ &b->esp64_encrypt_tun_feature_index);
b->check_support_cb = esp_check_support_cb;
b->add_del_sa_sess_cb = esp_add_del_sa_sess_cb;
im->esp6_encrypt_next_index = b->esp6_encrypt_next_index;
im->esp6_decrypt_next_index = b->esp6_decrypt_next_index;
- im->esp4_encrypt_tun_feature_index = b->esp4_encrypt_tun_feature_index;
- im->esp6_encrypt_tun_feature_index = b->esp6_encrypt_tun_feature_index;
+ im->esp44_encrypt_tun_feature_index = b->esp44_encrypt_tun_feature_index;
+ im->esp64_encrypt_tun_feature_index = b->esp64_encrypt_tun_feature_index;
+ im->esp46_encrypt_tun_feature_index = b->esp46_encrypt_tun_feature_index;
+ im->esp66_encrypt_tun_feature_index = b->esp66_encrypt_tun_feature_index;
return 0;
}
u32 esp6_decrypt_node_index;
u32 esp6_encrypt_next_index;
u32 esp6_decrypt_next_index;
- u32 esp4_encrypt_tun_feature_index;
- u32 esp6_encrypt_tun_feature_index;
+ u32 esp44_encrypt_tun_feature_index;
+ u32 esp46_encrypt_tun_feature_index;
+ u32 esp66_encrypt_tun_feature_index;
+ u32 esp64_encrypt_tun_feature_index;
} ipsec_esp_backend_t;
typedef struct
u32 ah6_decrypt_next_index;
/* tun encrypt arcs and feature nodes */
- u32 esp4_encrypt_tun_feature_index;
- u32 esp6_encrypt_tun_feature_index;
+ u32 esp44_encrypt_tun_feature_index;
+ u32 esp64_encrypt_tun_feature_index;
+ u32 esp46_encrypt_tun_feature_index;
+ u32 esp66_encrypt_tun_feature_index;
/* tun nodes to drop packets when no crypto alg set on outbound SA */
u32 esp4_no_crypto_tun_feature_index;
static ipsec_protect_db_t ipsec_protect_db;
-static int
+static void
ipsec_tun_protect_feature_set (ipsec_tun_protect_t * itp, u8 enable)
{
- u32 sai = itp->itp_out_sa;
- int rv;
+ u32 sai;
- const char *enc_node = (ip46_address_is_ip4 (&itp->itp_tun.src) ?
- "esp4-encrypt-tun" : "esp6-encrypt-tun");
+ sai = itp->itp_out_sa;
if (itp->itp_flags & IPSEC_PROTECT_L2)
{
- rv = vnet_feature_enable_disable ("ethernet-output",
- enc_node,
- itp->itp_sw_if_index, enable,
- &sai, sizeof (sai));
+ /* l2-GRE only supported by the vnet ipsec code */
+ vnet_feature_enable_disable ("ethernet-output",
+ (ip46_address_is_ip4 (&itp->itp_tun.src) ?
+ "esp4-encrypt-tun" :
+ "esp6-encrypt-tun"),
+ itp->itp_sw_if_index, enable,
+ &sai, sizeof (sai));
}
else
{
- rv = vnet_feature_enable_disable ("ip4-output",
- enc_node,
- itp->itp_sw_if_index, enable,
- &sai, sizeof (sai));
- rv = vnet_feature_enable_disable ("ip6-output",
- enc_node,
- itp->itp_sw_if_index, enable,
- &sai, sizeof (sai));
+ ipsec_main_t *im;
+ ipsec_sa_t *sa;
+ u32 fi4, fi6;
+
+ im = &ipsec_main;
+ sa = ipsec_sa_get (sai);
+
+ if (sa->crypto_alg == IPSEC_CRYPTO_ALG_NONE &&
+ sa->integ_alg == IPSEC_INTEG_ALG_NONE)
+ {
+ fi4 = im->esp4_no_crypto_tun_feature_index;
+ fi6 = im->esp6_no_crypto_tun_feature_index;
+ }
+ else
+ {
+ if (ip46_address_is_ip4 (&itp->itp_tun.src))
+ {
+ /* tunnel destination is v4 so we need the Xo4 indexes */
+ fi4 = im->esp44_encrypt_tun_feature_index;
+ fi6 = im->esp64_encrypt_tun_feature_index;
+ }
+ else
+ {
+ /* tunnel destination is v6 so we need the Xo6 indexes */
+ fi4 = im->esp46_encrypt_tun_feature_index;
+ fi6 = im->esp66_encrypt_tun_feature_index;
+ }
+ }
+
+ vnet_feature_enable_disable_with_index
+ (vnet_get_feature_arc_index ("ip4-output"),
+ fi4, itp->itp_sw_if_index, enable, &sai, sizeof (sai));
+ vnet_feature_enable_disable_with_index
+ (vnet_get_feature_arc_index ("ip6-output"),
+ fi6, itp->itp_sw_if_index, enable, &sai, sizeof (sai));
}
- ASSERT (!rv);
- return (rv);
}
static void
sizeof (u64));
im->tun4_protect_by_key = hash_create (0, sizeof (u64));
+ /* set up feature nodes to drop outbound packets with no crypto alg set */
+ ipsec_add_feature ("ip4-output", "esp4-no-crypto",
+ &im->esp4_no_crypto_tun_feature_index);
+ ipsec_add_feature ("ip6-output", "esp6-no-crypto",
+ &im->esp6_no_crypto_tun_feature_index);
+
return 0;
}
n_bytes = len0;
}
- /*
- * compare the packet's outer IP headers to that of the tunnels
- */
- if (is_ip6)
- {
- if (PREDICT_FALSE
- (!ip46_address_is_equal_v6
- (&itp0->itp_crypto.dst, &ip60->src_address)
- || !ip46_address_is_equal_v6 (&itp0->itp_crypto.src,
- &ip60->dst_address)))
- {
- b[0]->error =
- node->errors
- [IPSEC_TUN_PROTECT_INPUT_ERROR_TUNNEL_MISMATCH];
- next[0] = IPSEC_INPUT_NEXT_DROP;
- goto trace00;
- }
- }
- else
- {
- if (PREDICT_FALSE
- (!ip46_address_is_equal_v4
- (&itp0->itp_crypto.dst, &ip40->src_address)
- || !ip46_address_is_equal_v4 (&itp0->itp_crypto.src,
- &ip40->dst_address)))
- {
- b[0]->error =
- node->errors
- [IPSEC_TUN_PROTECT_INPUT_ERROR_TUNNEL_MISMATCH];
- next[0] = IPSEC_INPUT_NEXT_DROP;
- goto trace00;
- }
- }
-
- /*
- * There are two encap possibilities
- * 1) the tunnel and ths SA are prodiving encap, i.e. it's
- * MAC | SA-IP | TUN-IP | ESP | PAYLOAD
- * implying the SA is in tunnel mode (on a tunnel interface)
- * 2) only the tunnel provides encap
- * MAC | TUN-IP | ESP | PAYLOAD
- * implying the SA is in transport mode.
- *
- * For 2) we need only strip the tunnel encap and we're good.
- * since the tunnel and crypto ecnap (int the tun=protect
- * object) are the same and we verified above that these match
- * for 1) we need to strip the SA-IP outer headers, to
- * reveal the tunnel IP and then check that this matches
- * the configured tunnel. this we can;t do here since it
- * involves a lookup in the per-tunnel-type DB - so ship
- * the packet to the tunnel-types provided node to do that
- */
next[0] = IPSEC_TUN_PROTECT_NEXT_DECRYPT;
}
trace00:
from scapy.layers.ipsec import SecurityAssociation, ESP
from scapy.layers.l2 import Ether
from scapy.packet import Raw
-from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, IPv6ExtHdrHopByHop, \
+ IPv6ExtHdrFragment, IPv6ExtHdrDestOpt
+
from framework import VppTestCase, VppTestRunner
from util import ppp, reassemble4, fragment_rfc791, fragment_rfc8200
self.assert_packet_counter_equal(self.tra6_encrypt_node_name, count)
self.assert_packet_counter_equal(self.tra6_decrypt_node_name, count)
+ def gen_encrypt_pkts_ext_hdrs6(self, sa, sw_intf, src, dst, count=1,
+ payload_size=54):
+ return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+ sa.encrypt(IPv6(src=src, dst=dst) /
+ ICMPv6EchoRequest(id=0, seq=1,
+ data='X' * payload_size))
+ for i in range(count)]
+
+ def gen_pkts_ext_hdrs6(self, sw_intf, src, dst, count=1, payload_size=54):
+ return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+ IPv6(src=src, dst=dst) /
+ IPv6ExtHdrHopByHop() /
+ IPv6ExtHdrFragment(id=2, offset=200) /
+ Raw(b'\xff' * 200)
+ for i in range(count)]
+
+ def verify_tra_encrypted6(self, p, sa, rxs):
+ decrypted = []
+ for rx in rxs:
+ self.assert_packet_checksums_valid(rx)
+ try:
+ decrypt_pkt = p.vpp_tra_sa.decrypt(rx[IPv6])
+ decrypted.append(decrypt_pkt)
+ self.assert_equal(decrypt_pkt.src, self.tra_if.local_ip6)
+ self.assert_equal(decrypt_pkt.dst, self.tra_if.remote_ip6)
+ except:
+ self.logger.debug(ppp("Unexpected packet:", rx))
+ try:
+ self.logger.debug(ppp("Decrypted packet:", decrypt_pkt))
+ except:
+ pass
+ raise
+ return decrypted
+
+ def verify_tra_66_ext_hdrs(self, p):
+ count = 63
+
+ #
+ # check we can decrypt with options
+ #
+ tx = self.gen_encrypt_pkts_ext_hdrs6(p.scapy_tra_sa, self.tra_if,
+ src=self.tra_if.remote_ip6,
+ dst=self.tra_if.local_ip6,
+ count=count)
+ self.send_and_expect(self.tra_if, tx, self.tra_if)
+
+ #
+ # injecting a packet from ourselves to be routed of box is a hack
+ # but it matches an outbout policy, alors je ne regrette rien
+ #
+
+ # one extension before ESP
+ tx = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+ IPv6(src=self.tra_if.local_ip6,
+ dst=self.tra_if.remote_ip6) /
+ IPv6ExtHdrFragment(id=2, offset=200) /
+ Raw(b'\xff' * 200))
+
+ rxs = self.send_and_expect(self.pg2, [tx], self.tra_if)
+ dcs = self.verify_tra_encrypted6(p, p.vpp_tra_sa, rxs)
+
+ for dc in dcs:
+ # for reasons i'm not going to investigate scapy does not
+ # created the correct headers after decrypt. but reparsing
+ # the ipv6 packet fixes it
+ dc = IPv6(raw(dc[IPv6]))
+ self.assert_equal(dc[IPv6ExtHdrFragment].id, 2)
+
+ # two extensions before ESP
+ tx = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+ IPv6(src=self.tra_if.local_ip6,
+ dst=self.tra_if.remote_ip6) /
+ IPv6ExtHdrHopByHop() /
+ IPv6ExtHdrFragment(id=2, offset=200) /
+ Raw(b'\xff' * 200))
+
+ rxs = self.send_and_expect(self.pg2, [tx], self.tra_if)
+ dcs = self.verify_tra_encrypted6(p, p.vpp_tra_sa, rxs)
+
+ for dc in dcs:
+ dc = IPv6(raw(dc[IPv6]))
+ self.assertTrue(dc[IPv6ExtHdrHopByHop])
+ self.assert_equal(dc[IPv6ExtHdrFragment].id, 2)
+
+ # two extensions before ESP, one after
+ tx = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+ IPv6(src=self.tra_if.local_ip6,
+ dst=self.tra_if.remote_ip6) /
+ IPv6ExtHdrHopByHop() /
+ IPv6ExtHdrFragment(id=2, offset=200) /
+ IPv6ExtHdrDestOpt() /
+ Raw(b'\xff' * 200))
+
+ rxs = self.send_and_expect(self.pg2, [tx], self.tra_if)
+ dcs = self.verify_tra_encrypted6(p, p.vpp_tra_sa, rxs)
+
+ for dc in dcs:
+ dc = IPv6(raw(dc[IPv6]))
+ self.assertTrue(dc[IPv6ExtHdrDestOpt])
+ self.assertTrue(dc[IPv6ExtHdrHopByHop])
+ self.assert_equal(dc[IPv6ExtHdrFragment].id, 2)
+
class IpsecTra6Tests(IpsecTra6):
""" UT test methods for Transport v6 """
self.verify_tra_basic6(count=257)
+class IpsecTra6ExtTests(IpsecTra6):
+ def test_tra_ext_hdrs_66(self):
+ """ ipsec 6o6 tra extension headers test """
+ self.verify_tra_66_ext_hdrs(self.params[socket.AF_INET6])
+
+
class IpsecTra46Tests(IpsecTra4Tests, IpsecTra6Tests):
""" UT test methods for Transport v6 and v4"""
pass
def verify_tun_44(self, p, count=1, payload_size=64, n_rx=None):
self.vapi.cli("clear errors")
+ self.vapi.cli("clear ipsec counters")
if not n_rx:
n_rx = count
try:
self.logger.info(self.vapi.ppcli("show error"))
self.logger.info(self.vapi.ppcli("show ipsec all"))
+ self.logger.info(self.vapi.ppcli("show ipsec sa 0"))
+ self.logger.info(self.vapi.ppcli("show ipsec sa 4"))
self.verify_counters4(p, count, n_rx)
+ """ verify methods for Transport v4 """
+ def verify_tun_44_bad_packet_sizes(self, p):
+ # with a buffer size of 2048, 1989 bytes of payload
+ # means there isn't space to insert the ESP header
+ N_PKTS = 63
+ for p_siz in [1989, 8500]:
+ send_pkts = self.gen_encrypt_pkts(p.scapy_tun_sa, self.tun_if,
+ src=p.remote_tun_if_host,
+ dst=self.pg1.remote_ip4,
+ count=N_PKTS,
+ payload_size=p_siz)
+ self.send_and_assert_no_replies(self.tun_if, send_pkts)
+ send_pkts = self.gen_pkts(self.pg1, src=self.pg1.remote_ip4,
+ dst=p.remote_tun_if_host, count=N_PKTS,
+ payload_size=p_siz)
+ self.send_and_assert_no_replies(self.pg1, send_pkts,
+ self.tun_if)
+
+ # both large packets on decrpyt count against chained buffers
+ # the 9000 bytes one does on encrypt
+ self.assertEqual(2 * N_PKTS,
+ self.statistics.get_err_counter(
+ '/err/%s/chained buffers (packet dropped)' %
+ self.tun4_decrypt_node_name))
+ self.assertEqual(N_PKTS,
+ self.statistics.get_err_counter(
+ '/err/%s/chained buffers (packet dropped)' %
+ self.tun4_encrypt_node_name))
+
+ # on encrypt the 1989 size is no trailer space
+ self.assertEqual(N_PKTS,
+ self.statistics.get_err_counter(
+ '/err/%s/no trailer space (packet dropped)' %
+ self.tun4_encrypt_node_name))
+
def verify_tun_reass_44(self, p):
self.vapi.cli("clear errors")
self.vapi.ip_reassembly_enable_disable(
def test_tun_basic44(self):
""" ipsec 4o4 tunnel basic test """
self.verify_tun_44(self.params[socket.AF_INET], count=1)
+ self.tun_if.admin_down()
+ self.tun_if.resolve_arp()
+ self.tun_if.admin_up()
+ self.verify_tun_44(self.params[socket.AF_INET], count=1)
def test_tun_reass_basic44(self):
""" ipsec 4o4 tunnel basic reassembly test """
def test_tun_burst44(self):
""" ipsec 4o4 tunnel burst test """
- self.verify_tun_44(self.params[socket.AF_INET], count=257)
+ self.verify_tun_44(self.params[socket.AF_INET], count=127)
+
+
+class IpsecTunEsp4Tests(IpsecTun4):
+ def test_tun_bad_packet_sizes(self):
+ """ ipsec v4 tunnel bad packet size """
+ self.verify_tun_44_bad_packet_sizes(self.params[socket.AF_INET])
class IpsecTun6(object):
src=p.remote_tun_if_host,
dst=self.pg1.remote_ip6,
count=1,
- payload_size=1900)
+ payload_size=1850)
send_pkts = fragment_rfc8200(send_pkts[0], 1, 1400, self.logger)
recv_pkts = self.send_and_expect(self.tun_if, send_pkts,
self.pg1, n_rx=1)
IpsecTcpTests, IpsecTun4Tests, IpsecTra4Tests, config_tra_params, \
config_tun_params, IPsecIPv4Params, IPsecIPv6Params, \
IpsecTra4, IpsecTun4, IpsecTra6, IpsecTun6, \
- IpsecTun6HandoffTests, IpsecTun4HandoffTests
+ IpsecTun6HandoffTests, IpsecTun4HandoffTests, \
+ IpsecTra6ExtTests, IpsecTunEsp4Tests
from vpp_ipsec import VppIpsecSpd, VppIpsecSpdEntry, VppIpsecSA,\
VppIpsecSpdItfBinding
from vpp_ip_route import VppIpRoute, VppRoutePath
super(TemplateIpsecEsp, self).tearDown()
-class TestIpsecEsp1(TemplateIpsecEsp, IpsecTra46Tests, IpsecTun46Tests):
+class TestIpsecEsp1(TemplateIpsecEsp, IpsecTra46Tests,
+ IpsecTun46Tests, IpsecTunEsp4Tests,
+ IpsecTra6ExtTests):
""" Ipsec ESP - TUN & TRA tests """
pass
p.scapy_tra_spi = p.scapy_tra_spi + ii
p.vpp_tra_sa_id = p.vpp_tra_sa_id + ii
p.vpp_tra_spi = p.vpp_tra_spi + ii
+ p.tun_dst = self.pg0.remote_hosts[ii].ip4
p.tun_if = VppIpsecTunInterface(self, self.pg0, p.vpp_tun_spi,
p.scapy_tun_spi,
p.crypt_key, p.crypt_key,
p.auth_algo_vpp_id, p.auth_key,
p.auth_key,
- dst=self.pg0.remote_hosts[ii].ip4)
+ dst=p.tun_dst)
p.tun_if.add_vpp_config()
p.tun_if.admin_up()
p.tun_if.config_ip4()
c = p.tun_if.get_tx_stats()
self.assertEqual(c['packets'], 127)
+ def test_tun_rr_44(self):
+ """ Round-robin packets acrros multiple interface """
+ tx = []
+ for p in self.multi_params:
+ tx = tx + self.gen_encrypt_pkts(p.scapy_tun_sa, self.tun_if,
+ src=p.remote_tun_if_host,
+ dst=self.pg1.remote_ip4)
+ rxs = self.send_and_expect(self.tun_if, tx, self.pg1)
+
+ for rx, p in zip(rxs, self.multi_params):
+ self.verify_decrypted(p, [rx])
+
+ tx = []
+ for p in self.multi_params:
+ tx = tx + self.gen_pkts(self.pg1, src=self.pg1.remote_ip4,
+ dst=p.remote_tun_if_host)
+ rxs = self.send_and_expect(self.pg1, tx, self.tun_if)
+
+ for rx, p in zip(rxs, self.multi_params):
+ self.verify_encrypted(p, p.vpp_tun_sa, [rx])
+
class TestIpsec4TunIfEspAll(TemplateIpsec, IpsecTun4):
""" IPsec IPv4 Tunnel interface all Algos """
p.tun_sa_in.remove_vpp_config()
+class TestIpsec4TunIfEspNoAlgo(TemplateIpsec, IpsecTun4):
+ """ IPsec IPv4 Tunnel interface all Algos """
+
+ encryption_type = ESP
+ tun4_encrypt_node_name = "esp4-encrypt-tun"
+ tun4_decrypt_node_name = "esp4-decrypt-tun"
+
+ def config_network(self, p):
+
+ p.auth_algo_vpp_id = (VppEnum.vl_api_ipsec_integ_alg_t.
+ IPSEC_API_INTEG_ALG_NONE)
+ p.auth_algo = 'NULL'
+ p.auth_key = []
+
+ p.crypt_algo_vpp_id = (VppEnum.vl_api_ipsec_crypto_alg_t.
+ IPSEC_API_CRYPTO_ALG_NONE)
+ p.crypt_algo = 'NULL'
+ p.crypt_key = []
+
+ p.tun_if = VppIpsecTunInterface(self, self.pg0, p.vpp_tun_spi,
+ p.scapy_tun_spi,
+ p.crypt_algo_vpp_id,
+ p.crypt_key, p.crypt_key,
+ p.auth_algo_vpp_id, p.auth_key,
+ p.auth_key,
+ salt=p.salt)
+ p.tun_if.add_vpp_config()
+ p.tun_if.admin_up()
+ p.tun_if.config_ip4()
+ config_tun_params(p, self.encryption_type, p.tun_if)
+ self.logger.info(self.vapi.cli("sh ipsec sa 0"))
+ self.logger.info(self.vapi.cli("sh ipsec sa 1"))
+
+ p.route = VppIpRoute(self, p.remote_tun_if_host, 32,
+ [VppRoutePath(p.tun_if.remote_ip4,
+ 0xffffffff)])
+ p.route.add_vpp_config()
+
+ def unconfig_network(self, p):
+ p.tun_if.unconfig_ip4()
+ p.tun_if.remove_vpp_config()
+ p.route.remove_vpp_config()
+
+ def setUp(self):
+ super(TestIpsec4TunIfEspNoAlgo, self).setUp()
+
+ self.tun_if = self.pg0
+
+ def tearDown(self):
+ super(TestIpsec4TunIfEspNoAlgo, self).tearDown()
+
+ def test_tun_44(self):
+ p = self.ipv4_params
+
+ self.config_network(p)
+
+ tx = self.gen_pkts(self.pg1, src=self.pg1.remote_ip4,
+ dst=p.remote_tun_if_host)
+ self.send_and_assert_no_replies(self.pg1, tx)
+
+ self.unconfig_network(p)
+
+
class TestIpsec6MultiTunIfEsp(TemplateIpsec, IpsecTun6):
""" IPsec IPv6 Multi Tunnel interface """
Raw(b'X' * payload_size))
for i in range(count)]
+ def gen_encrypt_non_ip_pkts(self, sa, sw_intf, src, dst, count=1,
+ payload_size=100):
+ return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+ sa.encrypt(IP(src=self.pg0.remote_ip4,
+ dst=self.pg0.local_ip4) /
+ GRE() /
+ UDP(sport=1144, dport=2233) /
+ Raw(b'X' * payload_size))
+ for i in range(count)]
+
def gen_pkts(self, sw_intf, src, dst, count=1,
payload_size=100):
return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
p.tun_if.unconfig_ip4()
super(TestIpsecGreIfEspTra, self).tearDown()
+ def test_gre_non_ip(self):
+ p = self.ipv4_params
+ tx = self.gen_encrypt_non_ip_pkts(p.scapy_tun_sa, self.tun_if,
+ src=p.remote_tun_if_host,
+ dst=self.pg1.remote_ip6)
+ self.send_and_assert_no_replies(self.tun_if, tx)
+ node_name = ('/err/%s/unsupported payload' %
+ self.tun4_decrypt_node_name)
+ self.assertEqual(1, self.statistics.get_err_counter(node_name))
+
+
+class TestIpsecGre6IfEspTra(TemplateIpsec,
+ IpsecTun6Tests):
+ """ Ipsec GRE ESP - TRA tests """
+ tun6_encrypt_node_name = "esp6-encrypt-tun"
+ tun6_decrypt_node_name = "esp6-decrypt-tun"
+ encryption_type = ESP
+
+ def gen_encrypt_pkts6(self, sa, sw_intf, src, dst, count=1,
+ payload_size=100):
+ return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+ sa.encrypt(IPv6(src=self.pg0.remote_ip6,
+ dst=self.pg0.local_ip6) /
+ GRE() /
+ IPv6(src=self.pg1.local_ip6,
+ dst=self.pg1.remote_ip6) /
+ UDP(sport=1144, dport=2233) /
+ Raw(b'X' * payload_size))
+ for i in range(count)]
+
+ def gen_pkts6(self, sw_intf, src, dst, count=1,
+ payload_size=100):
+ return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+ IPv6(src="1::1", dst="1::2") /
+ UDP(sport=1144, dport=2233) /
+ Raw(b'X' * payload_size)
+ for i in range(count)]
+
+ def verify_decrypted6(self, p, rxs):
+ for rx in rxs:
+ self.assert_equal(rx[Ether].dst, self.pg1.remote_mac)
+ self.assert_equal(rx[IPv6].dst, self.pg1.remote_ip6)
+
+ def verify_encrypted6(self, p, sa, rxs):
+ for rx in rxs:
+ try:
+ pkt = sa.decrypt(rx[IPv6])
+ if not pkt.haslayer(IPv6):
+ pkt = IPv6(pkt[Raw].load)
+ self.assert_packet_checksums_valid(pkt)
+ self.assertTrue(pkt.haslayer(GRE))
+ e = pkt[GRE]
+ self.assertEqual(e[IPv6].dst, "1::2")
+ except (IndexError, AssertionError):
+ self.logger.debug(ppp("Unexpected packet:", rx))
+ try:
+ self.logger.debug(ppp("Decrypted packet:", pkt))
+ except:
+ pass
+ raise
+
+ def setUp(self):
+ super(TestIpsecGre6IfEspTra, self).setUp()
+
+ self.tun_if = self.pg0
+
+ p = self.ipv6_params
+
+ bd1 = VppBridgeDomain(self, 1)
+ bd1.add_vpp_config()
+
+ p.tun_sa_out = VppIpsecSA(self, p.scapy_tun_sa_id, p.scapy_tun_spi,
+ p.auth_algo_vpp_id, p.auth_key,
+ p.crypt_algo_vpp_id, p.crypt_key,
+ self.vpp_esp_protocol)
+ p.tun_sa_out.add_vpp_config()
+
+ p.tun_sa_in = VppIpsecSA(self, p.vpp_tun_sa_id, p.vpp_tun_spi,
+ p.auth_algo_vpp_id, p.auth_key,
+ p.crypt_algo_vpp_id, p.crypt_key,
+ self.vpp_esp_protocol)
+ p.tun_sa_in.add_vpp_config()
+
+ p.tun_if = VppGreInterface(self,
+ self.pg0.local_ip6,
+ self.pg0.remote_ip6)
+ p.tun_if.add_vpp_config()
+
+ p.tun_protect = VppIpsecTunProtect(self,
+ p.tun_if,
+ p.tun_sa_out,
+ [p.tun_sa_in])
+ p.tun_protect.add_vpp_config()
+
+ p.tun_if.admin_up()
+ p.tun_if.config_ip6()
+ config_tra_params(p, self.encryption_type, p.tun_if)
+
+ r = VppIpRoute(self, "1::2", 128,
+ [VppRoutePath(p.tun_if.remote_ip6,
+ 0xffffffff,
+ proto=DpoProto.DPO_PROTO_IP6)])
+ r.add_vpp_config()
+
+ def tearDown(self):
+ p = self.ipv6_params
+ p.tun_if.unconfig_ip6()
+ super(TestIpsecGre6IfEspTra, self).tearDown()
+
class TemplateIpsec4TunProtect(object):
""" IPsec IPv4 Tunnel protect """
self.unconfig_network(p)
+class TestIpsec4TunProtectTunDrop(TemplateIpsec,
+ TemplateIpsec4TunProtect,
+ IpsecTun4):
+ """ IPsec IPv4 Tunnel protect - tunnel mode - drop"""
+
+ encryption_type = ESP
+ tun4_encrypt_node_name = "esp4-encrypt-tun"
+ tun4_decrypt_node_name = "esp4-decrypt-tun"
+
+ def setUp(self):
+ super(TestIpsec4TunProtectTunDrop, self).setUp()
+
+ self.tun_if = self.pg0
+
+ def tearDown(self):
+ super(TestIpsec4TunProtectTunDrop, self).tearDown()
+
+ def gen_encrypt_pkts(self, sa, sw_intf, src, dst, count=1,
+ payload_size=100):
+ return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+ sa.encrypt(IP(src=sw_intf.remote_ip4,
+ dst="5.5.5.5") /
+ IP(src=src, dst=dst) /
+ UDP(sport=1144, dport=2233) /
+ Raw(b'X' * payload_size))
+ for i in range(count)]
+
+ def test_tun_drop_44(self):
+ """IPSEC tunnel protect bogus tunnel header """
+
+ p = self.ipv4_params
+
+ self.config_network(p)
+ self.config_sa_tun(p)
+ self.config_protect(p)
+
+ tx = self.gen_encrypt_pkts(p.scapy_tun_sa, self.tun_if,
+ src=p.remote_tun_if_host,
+ dst=self.pg1.remote_ip4,
+ count=63)
+ self.send_and_assert_no_replies(self.tun_if, tx)
+
+ # teardown
+ self.unconfig_protect(p)
+ self.unconfig_sa(p)
+ self.unconfig_network(p)
+
+
class TemplateIpsec6TunProtect(object):
""" IPsec IPv6 Tunnel protect """
super(TestIpsec6TunProtect, self).tearDown()
def test_tun_66(self):
- """IPSEC tunnel protect"""
+ """IPSEC tunnel protect 6o6"""
p = self.ipv6_params
c = p.tun_if.get_tx_stats()
self.assertEqual(c['packets'], 254)
+ # bounce the interface state
+ p.tun_if.admin_down()
+ self.verify_drop_tun_66(np, count=127)
+ node = ('/err/ipsec6-tun-input/%s' %
+ 'ipsec packets received on disabled interface')
+ self.assertEqual(127, self.statistics.get_err_counter(node))
+ p.tun_if.admin_up()
+ self.verify_tun_66(np, count=127)
+
# 3 phase rekey
# 1) add two input SAs [old, new]
# 2) swap output SA to [new]
self.verify_drop_tun_66(np, count=127)
c = p.tun_if.get_rx_stats()
- self.assertEqual(c['packets'], 127*7)
+ self.assertEqual(c['packets'], 127*9)
c = p.tun_if.get_tx_stats()
- self.assertEqual(c['packets'], 127*7)
+ self.assertEqual(c['packets'], 127*8)
self.unconfig_sa(np)
# teardown
self.unconfig_network(p)
def test_tun_46(self):
- """IPSEC tunnel protect"""
+ """IPSEC tunnel protect 4o6"""
p = self.ipv6_params
self.unconfig_network(p)
+class TestIpsec6TunProtectTunDrop(TemplateIpsec,
+ TemplateIpsec6TunProtect,
+ IpsecTun6):
+ """ IPsec IPv6 Tunnel protect - tunnel mode - drop"""
+
+ encryption_type = ESP
+ tun6_encrypt_node_name = "esp6-encrypt-tun"
+ tun6_decrypt_node_name = "esp6-decrypt-tun"
+
+ def setUp(self):
+ super(TestIpsec6TunProtectTunDrop, self).setUp()
+
+ self.tun_if = self.pg0
+
+ def tearDown(self):
+ super(TestIpsec6TunProtectTunDrop, self).tearDown()
+
+ def gen_encrypt_pkts5(self, sa, sw_intf, src, dst, count=1,
+ payload_size=100):
+ # the IP destination of the revelaed packet does not match
+ # that assigned to the tunnel
+ return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+ sa.encrypt(IPv6(src=sw_intf.remote_ip6,
+ dst="5::5") /
+ IPv6(src=src, dst=dst) /
+ UDP(sport=1144, dport=2233) /
+ Raw(b'X' * payload_size))
+ for i in range(count)]
+
+ def test_tun_drop_66(self):
+ """IPSEC 6 tunnel protect bogus tunnel header """
+
+ p = self.ipv6_params
+
+ self.config_network(p)
+ self.config_sa_tun(p)
+ self.config_protect(p)
+
+ tx = self.gen_encrypt_pkts6(p.scapy_tun_sa, self.tun_if,
+ src=p.remote_tun_if_host,
+ dst=self.pg1.remote_ip6,
+ count=63)
+ self.send_and_assert_no_replies(self.tun_if, tx)
+
+ self.unconfig_protect(p)
+ self.unconfig_sa(p)
+ self.unconfig_network(p)
+
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / commitdiff