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authorNeale Ranns <nranns@cisco.com>2020-10-19 09:59:41 +0000
committerOle Tr�an <otroan@employees.org>2020-10-21 14:44:56 +0000
commit6ba4e41d33ffda2596d9d4b3a1d7fdd3c9a6b870 (patch)
treeebc7c74e7d6490201395521a684daf7e6f214e90
parent990f69450781f1110056738707e3fed565262554 (diff)
ipsec: support for multipoint on ipsec interfaces
Type: feature Signed-off-by: Neale Ranns <nranns@cisco.com> Change-Id: Iae9fe35cfbce4c675fa25e0800c0f4629a83e012
-rw-r--r--src/vnet/gre/interface.c2
-rw-r--r--src/vnet/ipsec/ipsec_format.c15
-rw-r--r--src/vnet/ipsec/ipsec_itf.c45
-rw-r--r--src/vnet/ipsec/ipsec_itf.h4
-rw-r--r--src/vnet/ipsec/ipsec_tun.c5
-rw-r--r--test/test_ipsec_tun_if_esp.py125
-rw-r--r--test/vpp_ipsec.py7
7 files changed, 192 insertions, 11 deletions
diff --git a/src/vnet/gre/interface.c b/src/vnet/gre/interface.c
index 92e4f7469ac..ad0efde4345 100644
--- a/src/vnet/gre/interface.c
+++ b/src/vnet/gre/interface.c
@@ -202,7 +202,7 @@ gre_teib_mk_key (const gre_tunnel_t * t,
}
/**
- * An NHRP entry has been added
+ * An TEIB entry has been added
*/
static void
gre_teib_entry_added (const teib_entry_t * ne)
diff --git a/src/vnet/ipsec/ipsec_format.c b/src/vnet/ipsec/ipsec_format.c
index 8fdc844aec3..6781fe580c1 100644
--- a/src/vnet/ipsec/ipsec_format.c
+++ b/src/vnet/ipsec/ipsec_format.c
@@ -23,6 +23,7 @@
#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/ipsec_tun.h>
+#include <vnet/ipsec/ipsec_itf.h>
u8 *
format_ipsec_policy_action (u8 * s, va_list * args)
@@ -427,6 +428,20 @@ format_ipsec6_tunnel_kv (u8 * s, va_list * args)
return (s);
}
+u8 *
+format_ipsec_itf (u8 * s, va_list * a)
+{
+ index_t ii = va_arg (*a, index_t);
+ ipsec_itf_t *itf;
+
+ itf = ipsec_itf_get (ii);
+ s = format (s, "[%d] %U %U",
+ ii, format_vnet_sw_if_index_name, vnet_get_main (),
+ itf->ii_sw_if_index, format_tunnel_mode, itf->ii_mode);
+
+ return (s);
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
diff --git a/src/vnet/ipsec/ipsec_itf.c b/src/vnet/ipsec/ipsec_itf.c
index 46095ce07fe..ff06a579f2e 100644
--- a/src/vnet/ipsec/ipsec_itf.c
+++ b/src/vnet/ipsec/ipsec_itf.c
@@ -29,6 +29,12 @@ static ipsec_itf_t *ipsec_itf_pool;
static u32 *ipsec_itf_index_by_sw_if_index;
+ipsec_itf_t *
+ipsec_itf_get (index_t ii)
+{
+ return (pool_elt_at_index (ipsec_itf_pool, ii));
+}
+
static ipsec_itf_t *
ipsec_itf_find_by_sw_if_index (u32 sw_if_index)
{
@@ -197,6 +203,11 @@ VNET_HW_INTERFACE_CLASS(ipsec_hw_interface_class) = {
.update_adjacency = ipsec_itf_update_adj,
.flags = VNET_HW_INTERFACE_CLASS_FLAG_P2P,
};
+VNET_HW_INTERFACE_CLASS(ipsec_p2mp_hw_interface_class) = {
+ .name = "IPSec",
+ .build_rewrite = ipsec_itf_build_rewrite_i,
+ .update_adjacency = ipsec_itf_update_adj,
+};
/* *INDENT-ON* */
/*
@@ -276,9 +287,6 @@ ipsec_itf_create (u32 user_instance, tunnel_mode_t mode, u32 * sw_if_indexp)
*sw_if_indexp = (u32) ~ 0;
- if (mode != TUNNEL_MODE_P2P)
- return VNET_API_ERROR_UNSUPPORTED;
-
/*
* Allocate a ipsec_itf instance. Either select on dynamically
* or try to use the desired user_instance number.
@@ -298,7 +306,9 @@ ipsec_itf_create (u32 user_instance, tunnel_mode_t mode, u32 * sw_if_indexp)
hw_if_index = vnet_register_interface (vnm,
ipsec_itf_device_class.index,
ipsec_itf->ii_user_instance,
- ipsec_hw_interface_class.index,
+ (mode == TUNNEL_MODE_P2P ?
+ ipsec_hw_interface_class.index :
+ ipsec_p2mp_hw_interface_class.index),
t_idx);
hi = vnet_get_hw_interface (vnm, hw_if_index);
@@ -450,6 +460,33 @@ VLIB_CLI_COMMAND (ipsec_itf_delete_command, static) = {
};
/* *INDENT-ON* */
+static clib_error_t *
+ipsec_interface_show (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+ index_t ii;
+
+ /* *INDENT-OFF* */
+ pool_foreach_index (ii, ipsec_itf_pool,
+ ({
+ vlib_cli_output (vm, "%U", format_ipsec_itf, ii);
+ }));
+ /* *INDENT-ON* */
+
+ return NULL;
+}
+
+/**
+ * show IPSEC tunnel protection hash tables
+ */
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (ipsec_interface_show_node, static) =
+{
+ .path = "show ipsec interface",
+ .function = ipsec_interface_show,
+ .short_help = "show ipsec interface",
+};
+/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
diff --git a/src/vnet/ipsec/ipsec_itf.h b/src/vnet/ipsec/ipsec_itf.h
index 93e03f7b477..ab317e10332 100644
--- a/src/vnet/ipsec/ipsec_itf.h
+++ b/src/vnet/ipsec/ipsec_itf.h
@@ -106,6 +106,10 @@ extern int ipsec_itf_delete (u32 sw_if_index);
extern void ipsec_itf_adj_stack (adj_index_t ai, u32 sai);
extern void ipsec_itf_adj_unstack (adj_index_t ai);
+extern u8 *format_ipsec_itf (u8 * s, va_list * a);
+
+extern ipsec_itf_t *ipsec_itf_get (index_t ii);
+
/*
* fd.io coding-style-patch-verification: ON
*
diff --git a/src/vnet/ipsec/ipsec_tun.c b/src/vnet/ipsec/ipsec_tun.c
index c4c8fa7d262..9116df5d7e3 100644
--- a/src/vnet/ipsec/ipsec_tun.c
+++ b/src/vnet/ipsec/ipsec_tun.c
@@ -732,8 +732,9 @@ ipsec_tun_protect_update (u32 sw_if_index,
if (ip46_address_is_zero (&itp->itp_tun.src))
{
- /* must be one of thos pesky ipsec interfaces that has no encap.
- * the encap then MUST comefrom the tunnel mode SA.
+ /*
+ * must be one of those pesky ipsec interfaces that has no encap.
+ * the encap then MUST come from the tunnel mode SA.
*/
ipsec_sa_t *sa;
diff --git a/test/test_ipsec_tun_if_esp.py b/test/test_ipsec_tun_if_esp.py
index 9d01b93114e..fb31f221aed 100644
--- a/test/test_ipsec_tun_if_esp.py
+++ b/test/test_ipsec_tun_if_esp.py
@@ -1576,7 +1576,7 @@ class TestIpsecMGreIfEspTra4(TemplateIpsec, IpsecTun4):
# setup some SAs for several next-hops on the interface
self.multi_params = []
- for ii in range(1):
+ for ii in range(N_NHS):
p = copy.copy(self.ipv4_params)
p.remote_tun_if_host = "1.1.1.%d" % (ii + 1)
@@ -2810,5 +2810,128 @@ class TestIpsecItf6(TemplateIpsec,
self.unconfig_network(p)
+class TestIpsecMIfEsp4(TemplateIpsec, IpsecTun4):
+ """ Ipsec P2MP ESP v4 tests """
+ tun4_encrypt_node_name = "esp4-encrypt-tun"
+ tun4_decrypt_node_name = "esp4-decrypt-tun"
+ encryption_type = ESP
+
+ def gen_encrypt_pkts(self, p, 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.pg1.local_ip4,
+ dst=self.pg1.remote_ip4) /
+ 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) /
+ IP(src="1.1.1.1", dst=dst) /
+ UDP(sport=1144, dport=2233) /
+ Raw(b'X' * payload_size)
+ for i in range(count)]
+
+ def verify_decrypted(self, p, rxs):
+ for rx in rxs:
+ self.assert_equal(rx[Ether].dst, self.pg1.remote_mac)
+ self.assert_equal(rx[IP].dst, self.pg1.remote_ip4)
+
+ def verify_encrypted(self, p, sa, rxs):
+ for rx in rxs:
+ try:
+ pkt = sa.decrypt(rx[IP])
+ if not pkt.haslayer(IP):
+ pkt = IP(pkt[Raw].load)
+ self.assert_packet_checksums_valid(pkt)
+ e = pkt[IP]
+ self.assertEqual(e[IP].dst, p.remote_tun_if_host)
+ 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(TestIpsecMIfEsp4, self).setUp()
+
+ N_NHS = 16
+ self.tun_if = self.pg0
+ p = self.ipv4_params
+ p.tun_if = VppIpsecInterface(self,
+ mode=(VppEnum.vl_api_tunnel_mode_t.
+ TUNNEL_API_MODE_MP))
+ p.tun_if.add_vpp_config()
+ p.tun_if.admin_up()
+ p.tun_if.config_ip4()
+ p.tun_if.generate_remote_hosts(N_NHS)
+ self.pg0.generate_remote_hosts(N_NHS)
+ self.pg0.configure_ipv4_neighbors()
+
+ # setup some SAs for several next-hops on the interface
+ self.multi_params = []
+
+ for ii in range(N_NHS):
+ p = copy.copy(self.ipv4_params)
+
+ p.remote_tun_if_host = "1.1.1.%d" % (ii + 1)
+ p.scapy_tun_sa_id = p.scapy_tun_sa_id + ii
+ p.scapy_tun_spi = p.scapy_tun_spi + ii
+ p.vpp_tun_sa_id = p.vpp_tun_sa_id + ii
+ p.vpp_tun_spi = p.vpp_tun_spi + ii
+
+ p.scapy_tra_sa_id = p.scapy_tra_sa_id + ii
+ 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_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,
+ self.pg0.local_ip4,
+ self.pg0.remote_hosts[ii].ip4)
+ 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,
+ self.pg0.remote_hosts[ii].ip4,
+ self.pg0.local_ip4)
+ p.tun_sa_in.add_vpp_config()
+
+ p.tun_protect = VppIpsecTunProtect(
+ self,
+ p.tun_if,
+ p.tun_sa_out,
+ [p.tun_sa_in],
+ nh=p.tun_if.remote_hosts[ii].ip4)
+ p.tun_protect.add_vpp_config()
+ config_tun_params(p, self.encryption_type, None,
+ self.pg0.local_ip4,
+ self.pg0.remote_hosts[ii].ip4)
+ self.multi_params.append(p)
+
+ VppIpRoute(self, p.remote_tun_if_host, 32,
+ [VppRoutePath(p.tun_if.remote_hosts[ii].ip4,
+ p.tun_if.sw_if_index)]).add_vpp_config()
+
+ p.tun_dst = self.pg0.remote_hosts[ii].ip4
+
+ def tearDown(self):
+ p = self.ipv4_params
+ p.tun_if.unconfig_ip4()
+ super(TestIpsecMIfEsp4, self).tearDown()
+
+ def test_tun_44(self):
+ """P2MP IPSEC 44"""
+ N_PKTS = 63
+ for p in self.multi_params:
+ self.verify_tun_44(p, count=N_PKTS)
+
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
diff --git a/test/vpp_ipsec.py b/test/vpp_ipsec.py
index f9dcdf09f1a..479870621e0 100644
--- a/test/vpp_ipsec.py
+++ b/test/vpp_ipsec.py
@@ -379,9 +379,10 @@ class VppIpsecInterface(VppInterface):
def __init__(self, test, mode=None, instance=0xffffffff):
super(VppIpsecInterface, self).__init__(test)
- # only p2p mode is supported currently
- self.mode = (VppEnum.vl_api_tunnel_mode_t.
- TUNNEL_API_MODE_P2P)
+ self.mode = mode
+ if not self.mode:
+ self.mode = (VppEnum.vl_api_tunnel_mode_t.
+ TUNNEL_API_MODE_P2P)
self.instance = instance
def add_vpp_config(self):