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ipsec: support 4o6 and 6o4 for tunnel protect

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Type: feature

Change-Id: Ib2352ca4c7abf4645f21fa16aaaf27408890a2bf
Signed-off-by: Neale Ranns <nranns@cisco.com>
(cherry picked from commit b325983a4461dd806e86a31abc47533b09482157)
This commit is contained in:
Neale Ranns
2019-09-27 13:32:02 +00:00
committed by Andrew Yourtchenko
parent 24f486cb56
commit 2e6d739344
3 changed files with 71 additions and 27 deletions
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15
src/vnet/ipsec/esp_encrypt.c
View File

@ -630,6 +630,13 @@ VNET_FEATURE_INIT (esp4_encrypt_tun_feat_node, static) =
.runs_before = VNET_FEATURES ("adj-midchain-tx"),
};
VNET_FEATURE_INIT (esp6o4_encrypt_tun_feat_node, static) =
{
.arc_name = "ip6-output",
.node_name = "esp4-encrypt-tun",
.runs_before = VNET_FEATURES ("adj-midchain-tx"),
};
VNET_FEATURE_INIT (esp4_ethernet_encrypt_tun_feat_node, static) =
{
.arc_name = "ethernet-output",
@ -667,6 +674,14 @@ VNET_FEATURE_INIT (esp6_encrypt_tun_feat_node, static) =
.node_name = "esp6-encrypt-tun",
.runs_before = VNET_FEATURES ("adj-midchain-tx"),
};
VNET_FEATURE_INIT (esp4o6_encrypt_tun_feat_node, static) =
{
.arc_name = "ip4-output",
.node_name = "esp6-encrypt-tun",
.runs_before = VNET_FEATURES ("adj-midchain-tx"),
};
/* *INDENT-ON* */
typedef struct

27
src/vnet/ipsec/ipsec_tun.c
View File

@ -39,38 +39,29 @@ static int
ipsec_tun_protect_feature_set (ipsec_tun_protect_t * itp, u8 enable)
{
u32 sai = itp->itp_out_sa;
int is_ip4, is_l2, rv;
int rv;
is_ip4 = ip46_address_is_ip4 (&itp->itp_tun.src);
is_l2 = itp->itp_flags & IPSEC_PROTECT_L2;
const char *enc_node = (ip46_address_is_ip4 (&itp->itp_tun.src) ?
"esp4-encrypt-tun" : "esp6-encrypt-tun");
if (is_ip4)
if (itp->itp_flags & IPSEC_PROTECT_L2)
{
if (is_l2)
rv = vnet_feature_enable_disable ("ethernet-output",
"esp4-encrypt-tun",
enc_node,
itp->itp_sw_if_index, enable,
&sai, sizeof (sai));
}
else
{
rv = vnet_feature_enable_disable ("ip4-output",
"esp4-encrypt-tun",
enc_node,
itp->itp_sw_if_index, enable,
&sai, sizeof (sai));
}
else
{
if (is_l2)
rv = vnet_feature_enable_disable ("ethernet-output",
"esp6-encrypt-tun",
itp->itp_sw_if_index, enable,
&sai, sizeof (sai));
else
rv = vnet_feature_enable_disable ("ip6-output",
"esp6-encrypt-tun",
enc_node,
itp->itp_sw_if_index, enable,
&sai, sizeof (sai));
}
ASSERT (!rv);
return (rv);
}

42
test/test_ipsec_tun_if_esp.py
View File

@ -785,11 +785,17 @@ class TemplateIpsec4TunProtect(object):
p.tun_if.add_vpp_config()
p.tun_if.admin_up()
p.tun_if.config_ip4()
p.tun_if.config_ip6()
p.route = VppIpRoute(self, p.remote_tun_if_host, 32,
[VppRoutePath(p.tun_if.remote_ip4,
0xffffffff)])
p.route.add_vpp_config()
r = VppIpRoute(self, p.remote_tun_if_host6, 128,
[VppRoutePath(p.tun_if.remote_ip6,
0xffffffff,
proto=DpoProto.DPO_PROTO_IP6)])
r.add_vpp_config()
def unconfig_network(self, p):
p.route.remove_vpp_config()
@ -831,6 +837,13 @@ class TestIpsec4TunProtect(TemplateIpsec,
c = p.tun_if.get_tx_stats()
self.assertEqual(c['packets'], 127)
self.vapi.cli("clear ipsec sa")
self.verify_tun_64(p, count=127)
c = p.tun_if.get_rx_stats()
self.assertEqual(c['packets'], 254)
c = p.tun_if.get_tx_stats()
self.assertEqual(c['packets'], 254)
# rekey - create new SAs and update the tunnel protection
np = copy.copy(p)
np.crypt_key = 'X' + p.crypt_key[1:]
@ -847,9 +860,9 @@ class TestIpsec4TunProtect(TemplateIpsec,
self.verify_tun_44(np, count=127)
c = p.tun_if.get_rx_stats()
self.assertEqual(c['packets'], 254)
self.assertEqual(c['packets'], 381)
c = p.tun_if.get_tx_stats()
self.assertEqual(c['packets'], 254)
self.assertEqual(c['packets'], 381)
# teardown
self.unconfig_protect(np)
@ -1052,12 +1065,17 @@ class TemplateIpsec6TunProtect(object):
p.tun_if.add_vpp_config()
p.tun_if.admin_up()
p.tun_if.config_ip6()
p.tun_if.config_ip4()
p.route = VppIpRoute(self, p.remote_tun_if_host, 128,
[VppRoutePath(p.tun_if.remote_ip6,
0xffffffff,
proto=DpoProto.DPO_PROTO_IP6)])
p.route.add_vpp_config()
r = VppIpRoute(self, p.remote_tun_if_host4, 32,
[VppRoutePath(p.tun_if.remote_ip4,
0xffffffff)])
r.add_vpp_config()
def unconfig_network(self, p):
p.route.remove_vpp_config()
@ -1167,6 +1185,26 @@ class TestIpsec6TunProtect(TemplateIpsec,
self.unconfig_sa(np3)
self.unconfig_network(p)
def test_tun_46(self):
"""IPSEC tunnel protect"""
p = self.ipv6_params
self.config_network(p)
self.config_sa_tra(p)
self.config_protect(p)
self.verify_tun_46(p, count=127)
c = p.tun_if.get_rx_stats()
self.assertEqual(c['packets'], 127)
c = p.tun_if.get_tx_stats()
self.assertEqual(c['packets'], 127)
# teardown
self.unconfig_protect(p)
self.unconfig_sa(p)
self.unconfig_network(p)
class TestIpsec6TunProtectTun(TemplateIpsec,
TemplateIpsec6TunProtect,