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srv6-mobile: Update GTP4/6.D function

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GTP4/6.D behavior is updated as shown below.
1. When receiving GTP-U message or IPv6 linklocal destination in inner IP, GTP packet is tnralated to SRv6.
2. When receiving T-PDU packet, OuterIP/UDP/GTP headers are stripped off and Inner IP is encapsulated into SRv6 based on L3VPN SRv6 manner.

Type: feature

Signed-off-by: Tetsuya Murakami <tetsuya.mrk@gmail.com>
Change-Id: I6092c98ea80236d54017f84c5b35cca0b645f034
Signed-off-by: Tetsuya Murakami <tetsuya.mrk@gmail.com>
This commit is contained in:
Tetsuya Murakami
2021-12-10 08:11:07 -08:00
committed by Ole Tr�an
parent dfc853c0ac
commit be872a8dda
10 changed files with 1634 additions and 1282 deletions
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27
test/test_srv6_mobile.py
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@ -69,9 +69,10 @@ class TestSRv6EndMGTP4E(VppTestCase):
pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
self.vapi.cli(
"sr localsid address {} behavior end.m.gtp4.e v4src_position 64"
.format(pkts[0]['IPv6'].dst))
self.logger.info(self.vapi.cli("show sr localsids"))
"sr localsid address {} behavior end.m.gtp4.e "
.format(pkts[0]['IPv6'].dst) +
"v4src_position 64 fib-table 0")
self.logger.info(self.vapi.cli("show sr localsid"))
self.vapi.cli("clear errors")
@ -150,8 +151,8 @@ class TestSRv6TMGTP4D(VppTestCase):
self.vapi.cli("set sr encaps source addr A1::1")
self.vapi.cli("sr policy add bsid D4:: next D2:: next D3::")
self.vapi.cli(
"sr policy add bsid D5:: behavior t.m.gtp4.d"
"D4::/32 v6src_prefix C1::/64 nhtype ipv6")
"sr policy add bsid D5:: behavior t.m.gtp4.d D4::/32 " +
"v6src_prefix C1::/64 nhtype ipv6 fib-table 0 drop-in")
self.vapi.cli("sr steer l3 {}/32 via bsid D5::".format(self.ip4_dst))
self.vapi.cli("ip route add D2::/32 via {}".format(self.ip6_dst))
@ -236,11 +237,11 @@ class TestSRv6EndMGTP6E(VppTestCase):
pkts = self.create_packets([("A::1", "B::1"), ("C::1", "D::1")])
self.vapi.cli(
"sr localsid prefix {}/64 behavior end.m.gtp6.e"
"sr localsid prefix {}/64 behavior end.m.gtp6.e fib-table 0"
.format(pkts[0]['IPv6'].dst))
self.vapi.cli(
"ip route add a1::/64 via {}".format(self.ip6_nhop))
self.logger.info(self.vapi.cli("show sr localsids"))
self.logger.info(self.vapi.cli("show sr localsid"))
self.vapi.cli("clear errors")
@ -316,10 +317,12 @@ class TestSRv6EndMGTP6D(VppTestCase):
self.vapi.cli("set sr encaps source addr A1::1")
self.vapi.cli("sr policy add bsid D4:: next D2:: next D3::")
self.vapi.cli(
"sr localsid prefix 2001::/64 behavior end.m.gtp6.d D4::/64")
"sr localsid prefix 2001::/64 behavior end.m.gtp6.d " +
"D4::/64 fib-table 0 drop-in")
self.vapi.cli("ip route add D2::/64 via {}".format(self.ip6_nhop))
self.logger.info(self.vapi.cli("show sr policies"))
self.logger.info(self.vapi.cli("show sr localsid"))
self.vapi.cli("clear errors")
@ -334,7 +337,11 @@ class TestSRv6EndMGTP6D(VppTestCase):
for pkt in capture:
self.logger.info(pkt.show2(dump=True))
self.logger.info("GTP6.D Address={}".format(
self.logger.info("GTP6.D SID0={}".format(
str(pkt[IPv6ExtHdrSegmentRouting].addresses[0])))
self.logger.info("GTP6.D SID1={}".format(
str(pkt[IPv6ExtHdrSegmentRouting].addresses[1])))
self.assertEqual(
str(pkt[IPv6ExtHdrSegmentRouting].addresses[0]), "d4::c800:0")
str(pkt[IPv6ExtHdrSegmentRouting].addresses[0]), "2001::1")
self.assertEqual(
str(pkt[IPv6ExtHdrSegmentRouting].addresses[1]), "d4::c800:0")