sr: Support uSID function.

1. Add uSID function in VNET SRv6
2. Add test case for uSID

Type: feature

Signed-off-by: Tetsuya Murakami <tetsuya.mrk@gmail.com>
Change-Id: I354fc687192ed713ceb81fccc9f7b69b6777f6f6
Signed-off-by: Tetsuya Murakami <tetsuya.mrk@gmail.com>

1 files changed, 323 insertions, 0 deletions

diff --git a/test/test_srv6_un.py b/test/test_srv6_un.py
new file mode 100644
index 00000000000..5248e68c474
--- /dev/null
+++ b/test/test_srv6_un.py
@@ -0,0 +1,323 @@
+#!/usr/bin/env python
+
+from framework import VppTestCase
+from ipaddress import IPv4Address
+from ipaddress import IPv6Address
+from scapy.contrib.gtp import *
+from scapy.all import *
+
+
+class TestSRv6uSIDSRH(VppTestCase):
+    """ SRv6 End.uSID w/ SRH """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestSRv6uSIDSRH, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.pg_if_i = cls.pg_interfaces[0]
+            cls.pg_if_o = cls.pg_interfaces[1]
+
+            cls.pg_if_i.config_ip6()
+            cls.pg_if_o.config_ip6()
+
+            cls.ip6_nhop = cls.pg_if_o.remote_ip6
+
+            cls.ip6_dst = "1111:2222:aaaa:bbbb:cccc:dddd:eeee:ffff"
+            cls.ip6_src = "1111:2222::1"
+
+            for pg_if in cls.pg_interfaces:
+                pg_if.admin_up()
+                pg_if.resolve_ndp(timeout=5)
+
+        except Exception:
+            super(TestSRv6uSIDSRH, cls).tearDownClass()
+            raise
+
+    def create_packets(self, inner):
+
+        ip6_dst = IPv6Address(str(self.ip6_dst))
+
+        ip6_src = IPv6Address(str(self.ip6_src))
+
+        self.logger.info("ip6 dst: {}".format(ip6_dst))
+        self.logger.info("ip6 src: {}".format(ip6_src))
+
+        pkts = list()
+        for d, s in inner:
+            pkt = (Ether() /
+                   IPv6(dst=str(ip6_dst), src=str(ip6_src)) /
+                   IPv6ExtHdrSegmentRouting(segleft=1,
+                                            lastentry=0,
+                                            tag=0,
+                                            addresses=[
+                                                "a1::1",
+                                                "1111:2222:aaaa:bbbb::"]) /
+                   IPv6(dst=d, src=s) /
+                   UDP(sport=1000, dport=23))
+            self.logger.info(pkt.show2(dump=True))
+            pkts.append(pkt)
+
+        return pkts
+
+    def test_srv6_usid_srh(self):
+        """ test_srv6_usid_srh """
+        pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
+
+        self.vapi.cli("set sr encaps source addr A1::1")
+        self.vapi.cli(
+            "sr localsid prefix 1111:2222:aaaa::/48 behavior un 16")
+        self.vapi.cli(
+            "ip route add 1111:2222:bbbb::/48 via {}".format(self.ip6_nhop))
+
+        self.logger.info(self.vapi.cli("show sr localsids"))
+
+        self.vapi.cli("clear errors")
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.logger.info(self.vapi.cli("show errors"))
+        self.logger.info(self.vapi.cli("show int address"))
+
+        capture = self.pg1.get_capture(len(pkts))
+
+        for pkt in capture:
+            self.logger.info(pkt.show2(dump=True))
+            self.assertEqual(
+                    pkt[IPv6].dst, "1111:2222:bbbb:cccc:dddd:eeee:ffff:0")
+
+
+class TestSRv6uSID(VppTestCase):
+    """ SRv6 End.uSID w/o SRH """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestSRv6uSID, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.pg_if_i = cls.pg_interfaces[0]
+            cls.pg_if_o = cls.pg_interfaces[1]
+
+            cls.pg_if_i.config_ip6()
+            cls.pg_if_o.config_ip6()
+
+            cls.ip6_nhop = cls.pg_if_o.remote_ip6
+
+            cls.ip6_dst = "1111:2222:aaaa:bbbb:cccc:dddd:eeee:ffff"
+            cls.ip6_src = "1111:2222::1"
+
+            for pg_if in cls.pg_interfaces:
+                pg_if.admin_up()
+                pg_if.resolve_ndp(timeout=5)
+
+        except Exception:
+            super(TestSRv6uSID, cls).tearDownClass()
+            raise
+
+    def create_packets(self, inner):
+
+        ip6_dst = IPv6Address(str(self.ip6_dst))
+
+        ip6_src = IPv6Address(str(self.ip6_src))
+
+        self.logger.info("ip6 dst: {}".format(ip6_dst))
+        self.logger.info("ip6 src: {}".format(ip6_src))
+
+        pkts = list()
+        for d, s in inner:
+            pkt = (Ether() /
+                   IPv6(dst=str(ip6_dst), src=str(ip6_src)) /
+                   IPv6(dst=d, src=s) /
+                   UDP(sport=1000, dport=23))
+            self.logger.info(pkt.show2(dump=True))
+            pkts.append(pkt)
+
+        return pkts
+
+    def test_srv6_usid(self):
+        """ test_srv6_usid """
+        pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
+
+        self.vapi.cli("set sr encaps source addr A1::1")
+        self.vapi.cli(
+            "sr localsid prefix 1111:2222:aaaa::/48 behavior un 16")
+        self.vapi.cli(
+            "ip route add 1111:2222:bbbb::/48 via {}".format(self.ip6_nhop))
+
+        self.logger.info(self.vapi.cli("show sr localsids"))
+
+        self.vapi.cli("clear errors")
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.logger.info(self.vapi.cli("show errors"))
+        self.logger.info(self.vapi.cli("show int address"))
+
+        capture = self.pg1.get_capture(len(pkts))
+
+        for pkt in capture:
+            self.logger.info(pkt.show2(dump=True))
+            self.assertEqual(
+                    pkt[IPv6].dst, "1111:2222:bbbb:cccc:dddd:eeee:ffff:0")
+
+
+class TestSRv6uSIDFlexSRH(VppTestCase):
+    """ SRv6 End.uSID.Flex w/ SRH """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestSRv6uSIDFlexSRH, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.pg_if_i = cls.pg_interfaces[0]
+            cls.pg_if_o = cls.pg_interfaces[1]
+
+            cls.pg_if_i.config_ip6()
+            cls.pg_if_o.config_ip6()
+
+            cls.ip6_nhop = cls.pg_if_o.remote_ip6
+
+            cls.ip6_dst = "1111:2222:aaaa:bbbb:cccc:dddd:eeee:ffff"
+            cls.ip6_src = "1111:2222::1"
+
+            for pg_if in cls.pg_interfaces:
+                pg_if.admin_up()
+                pg_if.resolve_ndp(timeout=5)
+
+        except Exception:
+            super(TestSRv6uSIDFlexSRH, cls).tearDownClass()
+            raise
+
+    def create_packets(self, inner):
+
+        ip6_dst = IPv6Address(str(self.ip6_dst))
+
+        ip6_src = IPv6Address(str(self.ip6_src))
+
+        self.logger.info("ip6 dst: {}".format(ip6_dst))
+        self.logger.info("ip6 src: {}".format(ip6_src))
+
+        pkts = list()
+        for d, s in inner:
+            pkt = (Ether() /
+                   IPv6(dst=str(ip6_dst), src=str(ip6_src)) /
+                   IPv6ExtHdrSegmentRouting(segleft=1,
+                                            lastentry=0,
+                                            tag=0,
+                                            addresses=[
+                                                "a1::1",
+                                                "1111:2222:aaaa:bbbb::"]) /
+                   IPv6(dst=d, src=s) /
+                   UDP(sport=1000, dport=23))
+            self.logger.info(pkt.show2(dump=True))
+            pkts.append(pkt)
+
+        return pkts
+
+    def test_srv6_usid_flex_srh(self):
+        """ test_srv6_usid_flex_srh """
+        pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
+
+        self.vapi.cli("set sr encaps source addr A1::1")
+        self.vapi.cli(
+            "sr localsid prefix 1111:2222:aaaa::/48 behavior un.flex 16")
+        self.vapi.cli(
+            "ip route add 1111:2222:bbbb::/48 via {}".format(self.ip6_nhop))
+
+        self.logger.info(self.vapi.cli("show sr localsids"))
+
+        self.vapi.cli("clear errors")
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.logger.info(self.vapi.cli("show errors"))
+        self.logger.info(self.vapi.cli("show int address"))
+
+        capture = self.pg1.get_capture(len(pkts))
+
+        for pkt in capture:
+            self.logger.info(pkt.show2(dump=True))
+            self.assertEqual(
+                    pkt[IPv6].dst, "1111:2222:bbbb:cccc:dddd:eeee:ffff:0")
+
+
+class TestSRv6uSIDFlex(VppTestCase):
+    """ SRv6 End.uSID.Flex w/o SRH """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestSRv6uSIDFlex, cls).setUpClass()
+        try:
+            cls.create_pg_interfaces(range(2))
+            cls.pg_if_i = cls.pg_interfaces[0]
+            cls.pg_if_o = cls.pg_interfaces[1]
+
+            cls.pg_if_i.config_ip6()
+            cls.pg_if_o.config_ip6()
+
+            cls.ip6_nhop = cls.pg_if_o.remote_ip6
+
+            cls.ip6_dst = "1111:2222:aaaa:bbbb:cccc:dddd:eeee:ffff"
+            cls.ip6_src = "1111:2222::1"
+
+            for pg_if in cls.pg_interfaces:
+                pg_if.admin_up()
+                pg_if.resolve_ndp(timeout=5)
+
+        except Exception:
+            super(TestSRv6uSIDFlex, cls).tearDownClass()
+            raise
+
+    def create_packets(self, inner):
+
+        ip6_dst = IPv6Address(str(self.ip6_dst))
+
+        ip6_src = IPv6Address(str(self.ip6_src))
+
+        self.logger.info("ip6 dst: {}".format(ip6_dst))
+        self.logger.info("ip6 src: {}".format(ip6_src))
+
+        pkts = list()
+        for d, s in inner:
+            pkt = (Ether() /
+                   IPv6(dst=str(ip6_dst), src=str(ip6_src)) /
+                   IPv6(dst=d, src=s) /
+                   UDP(sport=1000, dport=23))
+            self.logger.info(pkt.show2(dump=True))
+            pkts.append(pkt)
+
+        return pkts
+
+    def test_srv6_usid_flex(self):
+        """ test_srv6_usid_flex """
+        pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
+
+        self.vapi.cli("set sr encaps source addr A1::1")
+        self.vapi.cli(
+            "sr localsid prefix 1111:2222:aaaa::/48 behavior un.flex 16")
+        self.vapi.cli(
+            "ip route add 1111:2222:bbbb::/48 via {}".format(self.ip6_nhop))
+
+        self.logger.info(self.vapi.cli("show sr localsids"))
+
+        self.vapi.cli("clear errors")
+
+        self.pg0.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+
+        self.logger.info(self.vapi.cli("show errors"))
+        self.logger.info(self.vapi.cli("show int address"))
+
+        capture = self.pg1.get_capture(len(pkts))
+
+        for pkt in capture:
+            self.logger.info(pkt.show2(dump=True))
+            self.assertEqual(
+                    pkt[IPv6].dst, "1111:2222:bbbb:cccc:dddd:eeee:ffff:0")