API: deprecated IPSEC APIs

Jira: CSIT-1597

+ add ipsec_sa tear down action

Change-Id: I4d1e6f26c14e61e8ddc6f29fbf5528a034c84eb0
Signed-off-by: Jan Gelety <jgelety@cisco.com>

3 files changed, 379 insertions, 134 deletions

diff --git a/resources/libraries/python/IPUtil.py b/resources/libraries/python/IPUtil.py
index 552ba27d61..4d5753ea92 100644
--- a/resources/libraries/python/IPUtil.py
+++ b/resources/libraries/python/IPUtil.py
@@ -65,6 +65,31 @@ class FibPathNhProto(IntEnum):
     FIB_PATH_NH_PROTO_BIER = 4
 
 
+class IpDscp(IntEnum):
+    """DSCP code points."""
+    IP_API_DSCP_CS0 = 0,
+    IP_API_DSCP_CS1 = 8,
+    IP_API_DSCP_AF11 = 10,
+    IP_API_DSCP_AF12 = 12,
+    IP_API_DSCP_AF13 = 14,
+    IP_API_DSCP_CS2 = 16,
+    IP_API_DSCP_AF21 = 18,
+    IP_API_DSCP_AF22 = 20,
+    IP_API_DSCP_AF23 = 22,
+    IP_API_DSCP_CS3 = 24,
+    IP_API_DSCP_AF31 = 26,
+    IP_API_DSCP_AF32 = 28,
+    IP_API_DSCP_AF33 = 30,
+    IP_API_DSCP_CS4 = 32,
+    IP_API_DSCP_AF41 = 34,
+    IP_API_DSCP_AF42 = 36,
+    IP_API_DSCP_AF43 = 38,
+    IP_API_DSCP_CS5 = 40,
+    IP_API_DSCP_EF = 46,
+    IP_API_DSCP_CS6 = 48,
+    IP_API_DSCP_CS7 = 50
+
+
 class IPUtil:
     """Common IP utilities"""
 
diff --git a/resources/libraries/python/IPsecUtil.py b/resources/libraries/python/IPsecUtil.py
index 36e984923b..3c3997ab53 100644
--- a/resources/libraries/python/IPsecUtil.py
+++ b/resources/libraries/python/IPsecUtil.py
@@ -22,16 +22,20 @@ from string import ascii_letters
 
 from ipaddress import ip_network, ip_address
 
+from resources.libraries.python.Constants import Constants
 from resources.libraries.python.InterfaceUtil import InterfaceUtil, \
     InterfaceStatusFlags
 from resources.libraries.python.IPAddress import IPAddress
-from resources.libraries.python.IPUtil import IPUtil
+from resources.libraries.python.IPUtil import IPUtil, IpDscp, MPLS_LABEL_INVALID
 from resources.libraries.python.PapiExecutor import PapiSocketExecutor
 from resources.libraries.python.ssh import scp_node
 from resources.libraries.python.topology import Topology
 from resources.libraries.python.VatExecutor import VatExecutor
 
 
+IPSEC_UDP_PORT_NONE = 0xffff
+
+
 def gen_key(length):
     """Generate random string as a key.
 
@@ -90,9 +94,43 @@ class IPsecProto(IntEnum):
 
 class IPsecSadFlags(IntEnum):
     """IPsec Security Association Database flags."""
-    IPSEC_API_SAD_FLAG_NONE = 0
-    IPSEC_API_SAD_FLAG_IS_TUNNEL = 4
-    IPSEC_API_SAD_FLAG_IS_TUNNEL_V6 = 8
+    IPSEC_API_SAD_FLAG_NONE = 0,
+    # Enable extended sequence numbers
+    IPSEC_API_SAD_FLAG_USE_ESN = 0x01,
+    # Enable Anti - replay
+    IPSEC_API_SAD_FLAG_USE_ANTI_REPLAY = 0x02,
+    # IPsec tunnel mode if non-zero, else transport mode
+    IPSEC_API_SAD_FLAG_IS_TUNNEL = 0x04,
+    # IPsec tunnel mode is IPv6 if non-zero, else IPv4 tunnel
+    # only valid if is_tunnel is non-zero
+    IPSEC_API_SAD_FLAG_IS_TUNNEL_V6 = 0x08,
+    # Enable UDP encapsulation for NAT traversal
+    IPSEC_API_SAD_FLAG_UDP_ENCAP = 0x10,
+    # IPsec SA is or inbound traffic
+    IPSEC_API_SAD_FLAG_IS_INBOUND = 0x40
+
+
+class TunnelEncpaDecapFlags(IntEnum):
+    """Flags controlling tunnel behaviour."""
+    TUNNEL_API_ENCAP_DECAP_FLAG_NONE = 0
+    # at encap, copy the DF bit of the payload into the tunnel header
+    TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DF = 1
+    # at encap, set the DF bit in the tunnel header
+    TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_SET_DF = 2
+    # at encap, copy the DSCP bits of the payload into the tunnel header
+    TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP = 4
+    # at encap, copy the ECN bit of the payload into the tunnel header
+    TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN = 8
+    # at decap, copy the ECN bit of the tunnel header into the payload
+    TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_SET_ECN = 16
+
+
+class TunnelMode(IntEnum):
+    """Tunnel modes."""
+    # point-to-point
+    TUNNEL_API_MODE_P2P = 0
+    # multi-point
+    TUNNEL_API_MODE_MP = 1
 
 
 class IPsecUtil:
@@ -836,24 +874,33 @@ class IPsecUtil:
                     ikeys.append(
                         gen_key(IPsecUtil.get_integ_alg_key_len(integ_alg))
                     )
-                    integ = f"integ_alg {integ_alg.alg_name} " \
-                        f"local_integ_key {ikeys[i].hex()} " \
-                        f"remote_integ_key {ikeys[i].hex()} "
+                    integ = f"integ-alg {integ_alg.alg_name} " \
+                        f"integ-key {ikeys[i].hex()} "
                 else:
                     integ = u""
                 tmp_f1.write(
                     f"exec set interface ip address loop0 "
                     f"{tun_ips[u'ip1'] + i * addr_incr}/32\n"
-                    f"ipsec_tunnel_if_add_del "
-                    f"local_spi {spi_d[u'spi_1'] + i} "
-                    f"remote_spi {spi_d[u'spi_2'] + i} "
-                    f"crypto_alg {crypto_alg.alg_name} "
-                    f"local_crypto_key {ckeys[i].hex()} "
-                    f"remote_crypto_key {ckeys[i].hex()} "
-                    f"{integ} "
-                    f"local_ip {tun_ips[u'ip1'] + i * addr_incr} "
-                    f"remote_ip {tun_ips[u'ip2']} "
-                    f"instance {i}\n"
+                    f"exec create ipip tunnel "
+                    f"src {tun_ips[u'ip1'] + i * addr_incr} "
+                    f"dst {tun_ips[u'ip2']} "
+                    f"p2p\n"
+                    f"exec ipsec sa add {i} "
+                    f"spi {spi_d[u'spi_1'] + i} "
+                    f"crypto-alg {crypto_alg.alg_name} "
+                    f"crypto-key {ckeys[i].hex()} "
+                    f"{integ}"
+                    f"esp\n"
+                    f"exec ipsec sa add {100000 + i} "
+                    f"spi {spi_d[u'spi_2'] + i} "
+                    f"crypto-alg {crypto_alg.alg_name} "
+                    f"crypto-key {ckeys[i].hex()} "
+                    f"{integ}"
+                    f"esp\n"
+                    f"exec ipsec tunnel protect ipip{i} "
+                    f"sa-out {i} "
+                    f"sa-in {100000 + i} "
+                    f"add\n"
                 )
         vat.execute_script(
             tmp_fn1, nodes[u"DUT1"], timeout=1800, json_out=False,
@@ -925,22 +972,31 @@ class IPsecUtil:
                 )
             for i in range(existing_tunnels, n_tunnels):
                 if integ_alg:
-                    integ = f"integ_alg {integ_alg.alg_name} " \
-                        f"local_integ_key {ikeys[i].hex()} " \
-                        f"remote_integ_key {ikeys[i].hex()} "
+                    integ = f"integ-alg {integ_alg.alg_name} " \
+                        f"integ-key {ikeys[i].hex()} "
                 else:
                     integ = u""
                 tmp_f2.write(
-                    f"ipsec_tunnel_if_add_del "
-                    f"local_spi {spi_d[u'spi_2'] + i} "
-                    f"remote_spi {spi_d[u'spi_1'] + i} "
-                    f"crypto_alg {crypto_alg.alg_name} "
-                    f"local_crypto_key {ckeys[i].hex()} "
-                    f"remote_crypto_key {ckeys[i].hex()} "
-                    f"{integ} "
-                    f"local_ip {tun_ips[u'ip2']} "
-                    f"remote_ip {tun_ips[u'ip1'] + i * addr_incr} "
-                    f"instance {i}\n"
+                    f"exec create ipip tunnel "
+                    f"src {tun_ips[u'ip2']} "
+                    f"dst {tun_ips[u'ip1'] + i * addr_incr} "
+                    f"p2p\n"
+                    f"exec ipsec sa add {100000 + i} "
+                    f"spi {spi_d[u'spi_2'] + i} "
+                    f"crypto-alg {crypto_alg.alg_name} "
+                    f"crypto-key {ckeys[i].hex()} "
+                    f"{integ}"
+                    f"esp\n"
+                    f"exec ipsec sa add {i} "
+                    f"spi {spi_d[u'spi_1'] + i} "
+                    f"crypto-alg {crypto_alg.alg_name} "
+                    f"crypto-key {ckeys[i].hex()} "
+                    f"{integ}"
+                    f"esp\n"
+                    f"exec ipsec tunnel protect ipip{i} "
+                    f"sa-out {100000 + i} "
+                    f"sa-in {i} "
+                    f"add\n"
                 )
         vat.execute_script(
             tmp_fn2, nodes[u"DUT2"], timeout=1800, json_out=False,
@@ -1103,29 +1159,78 @@ class IPsecUtil:
                 papi_exec.add(
                     cmd, history=bool(not 1 < i < n_tunnels - 2), **args
                 )
-            # Configure IPsec tunnel interfaces
-            cmd = u"ipsec_tunnel_if_add_del"
+            # Configure IPIP tunnel interfaces
+            cmd = u"ipip_add_tunnel"
+            ipip_tunnel = dict(
+                instance=Constants.BITWISE_NON_ZERO,
+                src=None,
+                dst=None,
+                table_id=0,
+                flags=int(
+                    TunnelEncpaDecapFlags.TUNNEL_API_ENCAP_DECAP_FLAG_NONE
+                ),
+                mode=int(TunnelMode.TUNNEL_API_MODE_P2P),
+                dscp=int(IpDscp.IP_API_DSCP_CS0)
+            )
             args = dict(
-                is_add=True,
-                local_ip=None,
-                remote_ip=None,
-                local_spi=0,
-                remote_spi=0,
-                crypto_alg=crypto_alg.alg_int_repr,
-                local_crypto_key_len=0,
-                local_crypto_key=None,
-                remote_crypto_key_len=0,
-                remote_crypto_key=None,
-                integ_alg=integ_alg.alg_int_repr if integ_alg else 0,
-                local_integ_key_len=0,
-                local_integ_key=None,
-                remote_integ_key_len=0,
-                remote_integ_key=None,
-                tx_table_id=0
+                tunnel=ipip_tunnel
+            )
+            ipip_tunnels = [None] * existing_tunnels
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"tunnel"][u"src"] = IPAddress.create_ip_address_object(
+                    tun_ips[u"ip1"] + i * addr_incr
+                )
+                args[u"tunnel"][u"dst"] = IPAddress.create_ip_address_object(
+                    tun_ips[u"ip2"]
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add IPIP tunnel interfaces on host" \
+                f" {nodes[u'DUT1'][u'host']}"
+            ipip_tunnels.extend(
+                [
+                    reply[u"sw_if_index"]
+                    for reply in papi_exec.get_replies(err_msg)
+                    if u"sw_if_index" in reply
+                ]
             )
-            ipsec_tunnels = [None] * existing_tunnels
+            # Configure IPSec SAD entries
             ckeys = [bytes()] * existing_tunnels
             ikeys = [bytes()] * existing_tunnels
+            cmd = u"ipsec_sad_entry_add_del_v2"
+            c_key = dict(
+                length=0,
+                data=None
+            )
+            i_key = dict(
+                length=0,
+                data=None
+            )
+            sad_entry = dict(
+                sad_id=None,
+                spi=None,
+                protocol=int(IPsecProto.IPSEC_API_PROTO_ESP),
+                crypto_algorithm=crypto_alg.alg_int_repr,
+                crypto_key=c_key,
+                integrity_algorithm=integ_alg.alg_int_repr if integ_alg else 0,
+                integrity_key=i_key,
+                flags=None,
+                tunnel_src=0,
+                tunnel_dst=0,
+                tunnel_flags=int(
+                    TunnelEncpaDecapFlags.TUNNEL_API_ENCAP_DECAP_FLAG_NONE
+                ),
+                dscp=int(IpDscp.IP_API_DSCP_CS0),
+                table_id=0,
+                salt=0,
+                udp_src_port=IPSEC_UDP_PORT_NONE,
+                udp_dst_port=IPSEC_UDP_PORT_NONE
+            )
+            args = dict(
+                is_add=True,
+                entry=sad_entry
+            )
             for i in range(existing_tunnels, n_tunnels):
                 ckeys.append(
                     gen_key(IPsecUtil.get_crypto_alg_key_len(crypto_alg))
@@ -1134,35 +1239,68 @@ class IPsecUtil:
                     ikeys.append(
                         gen_key(IPsecUtil.get_integ_alg_key_len(integ_alg))
                     )
-                args[u"local_spi"] = spi_d[u"spi_1"] + i
-                args[u"remote_spi"] = spi_d[u"spi_2"] + i
-                args[u"local_ip"] = IPAddress.create_ip_address_object(
-                    tun_ips[u"ip1"] + i * addr_incr
+                # SAD entry for outband / tx path
+                args[u"entry"][u"sad_id"] = i
+                args[u"entry"][u"spi"] = spi_d[u"spi_1"] + i
+
+                args[u"entry"][u"crypto_key"][u"length"] = len(ckeys[i])
+                args[u"entry"][u"crypto_key"][u"data"] = ckeys[i]
+                if integ_alg:
+                    args[u"entry"][u"integrity_key"][u"length"] = len(ikeys[i])
+                    args[u"entry"][u"integrity_key"][u"data"] = ikeys[i]
+                args[u"entry"][u"flags"] = int(
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_NONE
                 )
-                args[u"remote_ip"] = IPAddress.create_ip_address_object(
-                    tun_ips[u"ip2"]
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
                 )
-                args[u"local_crypto_key_len"] = len(ckeys[i])
-                args[u"local_crypto_key"] = ckeys[i]
-                args[u"remote_crypto_key_len"] = len(ckeys[i])
-                args[u"remote_crypto_key"] = ckeys[i]
+                # SAD entry for inband / rx path
+                args[u"entry"][u"sad_id"] = 100000 + i
+                args[u"entry"][u"spi"] = spi_d[u"spi_2"] + i
+
+                args[u"entry"][u"crypto_key"][u"length"] = len(ckeys[i])
+                args[u"entry"][u"crypto_key"][u"data"] = ckeys[i]
                 if integ_alg:
-                    args[u"local_integ_key_len"] = len(ikeys[i])
-                    args[u"local_integ_key"] = ikeys[i]
-                    args[u"remote_integ_key_len"] = len(ikeys[i])
-                    args[u"remote_integ_key"] = ikeys[i]
+                    args[u"entry"][u"integrity_key"][u"length"] = len(ikeys[i])
+                    args[u"entry"][u"integrity_key"][u"data"] = ikeys[i]
+                args[u"entry"][u"flags"] = int(
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_NONE |
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_IS_INBOUND
+                )
                 papi_exec.add(
                     cmd, history=bool(not 1 < i < n_tunnels - 2), **args
                 )
-            err_msg = f"Failed to add IPsec tunnel interfaces on host" \
+            err_msg = f"Failed to add IPsec SAD entries on host" \
                 f" {nodes[u'DUT1'][u'host']}"
-            ipsec_tunnels.extend(
-                [
-                    reply[u"sw_if_index"]
-                    for reply in papi_exec.get_replies(err_msg)
-                    if u"sw_if_index" in reply
-                ]
+            papi_exec.get_replies(err_msg)
+            # Add protection for tunnels with IPSEC
+            cmd = u"ipsec_tunnel_protect_update"
+            n_hop = dict(
+                address=0,
+                via_label=MPLS_LABEL_INVALID,
+                obj_id=Constants.BITWISE_NON_ZERO
+            )
+            ipsec_tunnel_protect = dict(
+                sw_if_index=None,
+                nh=n_hop,
+                sa_out=None,
+                n_sa_in=1,
+                sa_in=None
+            )
+            args = dict(
+                tunnel=ipsec_tunnel_protect
             )
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"tunnel"][u"sw_if_index"] = ipip_tunnels[i]
+                args[u"tunnel"][u"sa_out"] = i
+                args[u"tunnel"][u"sa_in"] = [100000 + i]
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add protection for tunnels with IPSEC " \
+                f"on host {nodes[u'DUT1'][u'host']}"
+            papi_exec.get_replies(err_msg)
+
             # Configure unnumbered interfaces
             cmd = u"sw_interface_set_unnumbered"
             args = dict(
@@ -1173,7 +1311,7 @@ class IPsecUtil:
                 unnumbered_sw_if_index=0
             )
             for i in range(existing_tunnels, n_tunnels):
-                args[u"unnumbered_sw_if_index"] = ipsec_tunnels[i]
+                args[u"unnumbered_sw_if_index"] = ipip_tunnels[i]
                 papi_exec.add(
                     cmd, history=bool(not 1 < i < n_tunnels - 2), **args
                 )
@@ -1184,7 +1322,7 @@ class IPsecUtil:
                 flags=InterfaceStatusFlags.IF_STATUS_API_FLAG_ADMIN_UP.value
             )
             for i in range(existing_tunnels, n_tunnels):
-                args[u"sw_if_index"] = ipsec_tunnels[i]
+                args[u"sw_if_index"] = ipip_tunnels[i]
                 papi_exec.add(
                     cmd, history=bool(not 1 < i < n_tunnels - 2), **args
                 )
@@ -1199,7 +1337,7 @@ class IPsecUtil:
                 args[u"route"] = IPUtil.compose_vpp_route_structure(
                     nodes[u"DUT1"], (raddr_ip2 + i).compressed,
                     prefix_len=128 if raddr_ip2.version == 6 else 32,
-                    interface=ipsec_tunnels[i]
+                    interface=ipip_tunnels[i]
                 )
                 papi_exec.add(
                     cmd, history=bool(not 1 < i < n_tunnels - 2), **args
@@ -1261,57 +1399,148 @@ class IPsecUtil:
                 err_msg = f"Failed to set IP address on interface {if2_key} " \
                     f"on host {nodes[u'DUT2'][u'host']}"
                 papi_exec.add(cmd, **args).get_reply(err_msg)
-            # Configure IPsec tunnel interfaces
-            cmd = u"ipsec_tunnel_if_add_del"
+            # Configure IPIP tunnel interfaces
+            cmd = u"ipip_add_tunnel"
+            ipip_tunnel = dict(
+                instance=Constants.BITWISE_NON_ZERO,
+                src=None,
+                dst=None,
+                table_id=0,
+                flags=int(
+                    TunnelEncpaDecapFlags.TUNNEL_API_ENCAP_DECAP_FLAG_NONE
+                ),
+                mode=int(TunnelMode.TUNNEL_API_MODE_P2P),
+                dscp=int(IpDscp.IP_API_DSCP_CS0)
+            )
             args = dict(
-                is_add=True,
-                local_ip=IPAddress.create_ip_address_object(tun_ips[u"ip2"]),
-                remote_ip=None,
-                local_spi=0,
-                remote_spi=0,
-                crypto_alg=crypto_alg.alg_int_repr,
-                local_crypto_key_len=0,
-                local_crypto_key=None,
-                remote_crypto_key_len=0,
-                remote_crypto_key=None,
-                integ_alg=integ_alg.alg_int_repr if integ_alg else 0,
-                local_integ_key_len=0,
-                local_integ_key=None,
-                remote_integ_key_len=0,
-                remote_integ_key=None,
-                tx_table_id=0
+                tunnel=ipip_tunnel
             )
-            ipsec_tunnels = [None] * existing_tunnels
+            ipip_tunnels = [None] * existing_tunnels
             for i in range(existing_tunnels, n_tunnels):
-                args[u"local_spi"] = spi_d[u"spi_2"] + i
-                args[u"remote_spi"] = spi_d[u"spi_1"] + i
-                args[u"local_ip"] = IPAddress.create_ip_address_object(
+                args[u"tunnel"][u"src"] = IPAddress.create_ip_address_object(
                     tun_ips[u"ip2"]
                 )
-                args[u"remote_ip"] = IPAddress.create_ip_address_object(
+                args[u"tunnel"][u"dst"] = IPAddress.create_ip_address_object(
                     tun_ips[u"ip1"] + i * addr_incr
                 )
-                args[u"local_crypto_key_len"] = len(ckeys[i])
-                args[u"local_crypto_key"] = ckeys[i]
-                args[u"remote_crypto_key_len"] = len(ckeys[i])
-                args[u"remote_crypto_key"] = ckeys[i]
-                if integ_alg:
-                    args[u"local_integ_key_len"] = len(ikeys[i])
-                    args[u"local_integ_key"] = ikeys[i]
-                    args[u"remote_integ_key_len"] = len(ikeys[i])
-                    args[u"remote_integ_key"] = ikeys[i]
                 papi_exec.add(
                     cmd, history=bool(not 1 < i < n_tunnels - 2), **args
                 )
-            err_msg = f"Failed to add IPsec tunnel interfaces " \
-                f"on host {nodes[u'DUT2'][u'host']}"
-            ipsec_tunnels.extend(
+            err_msg = f"Failed to add IPIP tunnel interfaces on host" \
+                f" {nodes[u'DUT2'][u'host']}"
+            ipip_tunnels.extend(
                 [
                     reply[u"sw_if_index"]
                     for reply in papi_exec.get_replies(err_msg)
                     if u"sw_if_index" in reply
                 ]
             )
+            # Configure IPSec SAD entries
+            cmd = u"ipsec_sad_entry_add_del_v2"
+            c_key = dict(
+                length=0,
+                data=None
+            )
+            i_key = dict(
+                length=0,
+                data=None
+            )
+            sad_entry = dict(
+                sad_id=None,
+                spi=None,
+                protocol=int(IPsecProto.IPSEC_API_PROTO_ESP),
+
+                crypto_algorithm=crypto_alg.alg_int_repr,
+                crypto_key=c_key,
+                integrity_algorithm=integ_alg.alg_int_repr if integ_alg else 0,
+                integrity_key=i_key,
+
+                flags=None,
+                tunnel_src=0,
+                tunnel_dst=0,
+                tunnel_flags=int(
+                    TunnelEncpaDecapFlags.TUNNEL_API_ENCAP_DECAP_FLAG_NONE
+                ),
+                dscp=int(IpDscp.IP_API_DSCP_CS0),
+                table_id=0,
+                salt=0,
+                udp_src_port=IPSEC_UDP_PORT_NONE,
+                udp_dst_port=IPSEC_UDP_PORT_NONE
+            )
+            args = dict(
+                is_add=True,
+                entry=sad_entry
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                ckeys.append(
+                    gen_key(IPsecUtil.get_crypto_alg_key_len(crypto_alg))
+                )
+                if integ_alg:
+                    ikeys.append(
+                        gen_key(IPsecUtil.get_integ_alg_key_len(integ_alg))
+                    )
+                # SAD entry for outband / tx path
+                args[u"entry"][u"sad_id"] = 100000 + i
+                args[u"entry"][u"spi"] = spi_d[u"spi_2"] + i
+
+                args[u"entry"][u"crypto_key"][u"length"] = len(ckeys[i])
+                args[u"entry"][u"crypto_key"][u"data"] = ckeys[i]
+                if integ_alg:
+                    args[u"entry"][u"integrity_key"][u"length"] = len(ikeys[i])
+                    args[u"entry"][u"integrity_key"][u"data"] = ikeys[i]
+                args[u"entry"][u"flags"] = int(
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_NONE
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+                # SAD entry for inband / rx path
+                args[u"entry"][u"sad_id"] = i
+                args[u"entry"][u"spi"] = spi_d[u"spi_1"] + i
+
+                args[u"entry"][u"crypto_key"][u"length"] = len(ckeys[i])
+                args[u"entry"][u"crypto_key"][u"data"] = ckeys[i]
+                if integ_alg:
+                    args[u"entry"][u"integrity_key"][u"length"] = len(ikeys[i])
+                    args[u"entry"][u"integrity_key"][u"data"] = ikeys[i]
+                args[u"entry"][u"flags"] = int(
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_NONE |
+                    IPsecSadFlags.IPSEC_API_SAD_FLAG_IS_INBOUND
+                )
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add IPsec SAD entries on host" \
+                f" {nodes[u'DUT2'][u'host']}"
+            papi_exec.get_replies(err_msg)
+            # Add protection for tunnels with IPSEC
+            cmd = u"ipsec_tunnel_protect_update"
+            n_hop = dict(
+                address=0,
+                via_label=MPLS_LABEL_INVALID,
+                obj_id=Constants.BITWISE_NON_ZERO
+            )
+            ipsec_tunnel_protect = dict(
+                sw_if_index=None,
+                nh=n_hop,
+                sa_out=None,
+                n_sa_in=1,
+                sa_in=None
+            )
+            args = dict(
+                tunnel=ipsec_tunnel_protect
+            )
+            for i in range(existing_tunnels, n_tunnels):
+                args[u"tunnel"][u"sw_if_index"] = ipip_tunnels[i]
+                args[u"tunnel"][u"sa_out"] = 100000 + i
+                args[u"tunnel"][u"sa_in"] = [i]
+                papi_exec.add(
+                    cmd, history=bool(not 1 < i < n_tunnels - 2), **args
+                )
+            err_msg = f"Failed to add protection for tunnels with IPSEC " \
+                f"on host {nodes[u'DUT2'][u'host']}"
+            papi_exec.get_replies(err_msg)
+
             if not existing_tunnels:
                 # Configure IP route
                 cmd = u"ip_route_add_del"
@@ -1337,7 +1566,7 @@ class IPsecUtil:
                 unnumbered_sw_if_index=0
             )
             for i in range(existing_tunnels, n_tunnels):
-                args[u"unnumbered_sw_if_index"] = ipsec_tunnels[i]
+                args[u"unnumbered_sw_if_index"] = ipip_tunnels[i]
                 papi_exec.add(
                     cmd, history=bool(not 1 < i < n_tunnels - 2), **args
                 )
@@ -1348,7 +1577,7 @@ class IPsecUtil:
                 flags=InterfaceStatusFlags.IF_STATUS_API_FLAG_ADMIN_UP.value
             )
             for i in range(existing_tunnels, n_tunnels):
-                args[u"sw_if_index"] = ipsec_tunnels[i]
+                args[u"sw_if_index"] = ipip_tunnels[i]
                 papi_exec.add(
                     cmd, history=bool(not 1 < i < n_tunnels - 2), **args
                 )
@@ -1363,7 +1592,7 @@ class IPsecUtil:
                 args[u"route"] = IPUtil.compose_vpp_route_structure(
                     nodes[u"DUT1"], (raddr_ip1 + i).compressed,
                     prefix_len=128 if raddr_ip1.version == 6 else 32,
-                    interface=ipsec_tunnels[i]
+                    interface=ipip_tunnels[i]
                 )
                 papi_exec.add(
                     cmd, history=bool(not 1 < i < n_tunnels - 2), **args
@@ -1722,3 +1951,15 @@ class IPsecUtil:
         :type node: dict
         """
         PapiSocketExecutor.run_cli_cmd(node, u"show ipsec")
+
+    @staticmethod
+    def show_ipsec_security_association(node):
+        """Show IPSec security association.
+
+        :param node: DUT node.
+        :type node: dict
+        """
+        cmds = [
+            u"ipsec_sa_v2_dump"
+        ]
+        PapiSocketExecutor.dump_and_log(node, cmds)
diff --git a/resources/libraries/python/Policer.py b/resources/libraries/python/Policer.py
index af2321bae9..37b1c7f745 100644
--- a/resources/libraries/python/Policer.py
+++ b/resources/libraries/python/Policer.py
@@ -16,6 +16,7 @@
 from enum import IntEnum
 
 from resources.libraries.python.Constants import Constants
+from resources.libraries.python.IPUtil import IpDscp
 from resources.libraries.python.PapiExecutor import PapiSocketExecutor
 from resources.libraries.python.topology import Topology
 
@@ -59,28 +60,6 @@ class PolicerPreColor(IntEnum):
     VIOLATE_COLOR = 2
 
 
-class DSCP(IntEnum):
-    """DSCP for mark-and-transmit action."""
-    D_CS0 = 0
-    D_CS1 = 8
-    D_CS2 = 16
-    D_CS3 = 24
-    D_CS4 = 32
-    D_vCS5 = 40
-    D_CS6 = 48
-    D_CS7 = 56
-    D_AF11 = 10
-    D_AF12 = 12
-    D_AF13 = 14
-    D_AF21 = 18
-    D_AF22 = 20
-    D_AF23 = 22
-    D_AF31 = 26
-    D_AF32 = 28
-    D_AF33 = 30
-    D_EF = 46
-
-
 class Policer:
     """Policer utilities."""
 
@@ -240,4 +219,4 @@ class Policer:
         :returns: DSCP numeric value.
         :rtype: int
         """
-        return getattr(DSCP, f"D_{dscp.upper()}").value
+        return getattr(IpDscp, f"IP_API_DSCP_{dscp.upper()}").value