VPP-1277: IPIP - Copy TOS/TC from inner packet to outer.

Add support for either copying TOS/TC from inner packet to outer,
or set to fixed value.

Change-Id: I716a95f875349acec94317b266c8cf9f2f81a785
Signed-off-by: Ole Troan <ot@cisco.com>

2 files changed, 22 insertions, 18 deletions

diff --git a/test/test_ipip.py b/test/test_ipip.py
index 3a0c401f8af..00721ec90a0 100644
--- a/test/test_ipip.py
+++ b/test/test_ipip.py
@@ -47,15 +47,15 @@ class TestIPIP(VppTestCase):
     def test_ipip4(self):
         """ ip{v4,v6} over ip4 test """
         p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
-        p_ip6 = IPv6(src="1::1", dst="DEAD::1", nh='UDP')
-        p_ip4 = IP(src="1.2.3.4", dst="130.67.0.1")
+        p_ip6 = IPv6(src="1::1", dst="DEAD::1", nh='UDP', tc=42)
+        p_ip4 = IP(src="1.2.3.4", dst="130.67.0.1", tos=42)
         p_payload = UDP(sport=1234, dport=1234)
 
         # IPv4 transport
         rv = self.vapi.ipip_add_tunnel(
             src_address=self.pg0.local_ip4n,
             dst_address=self.pg1.remote_ip4n,
-            is_ipv6=0)
+            is_ipv6=0, tc_tos=0xFF)
         sw_if_index = rv.sw_if_index
 
         # Set interface up and enable IP on it
@@ -84,7 +84,7 @@ class TestIPIP(VppTestCase):
         p_inner_ip6 = p_ip6
         p_inner_ip6.hlim -= 1
         p6_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4,
-                       proto='ipv6', id=0) / p_inner_ip6 / p_payload)
+                       proto='ipv6', id=0, tos=42) / p_inner_ip6 / p_payload)
         p6_reply.ttl -= 1
         rx = self.send_and_expect(self.pg0, p6*10, self.pg1)
         for p in rx:
@@ -94,8 +94,9 @@ class TestIPIP(VppTestCase):
         p4 = (p_ether / p_ip4 / p_payload)
         p_ip4_inner = p_ip4
         p_ip4_inner.ttl -= 1
-        p4_reply = (IP(src=self.pg0.local_ip4,
-                       dst=self.pg1.remote_ip4) / p_ip4_inner / p_payload)
+        p4_reply = (IP(src=self.pg0.local_ip4, dst=self.pg1.remote_ip4,
+                       tos=42) /
+                    p_ip4_inner / p_payload)
         p4_reply.ttl -= 1
         p4_reply.id = 0
         rx = self.send_and_expect(self.pg0, p4*10, self.pg1)
@@ -128,14 +129,14 @@ class TestIPIP(VppTestCase):
     def test_ipip6(self):
         """ ip{v4,v6} over ip6 test """
         p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
-        p_ip6 = IPv6(src="1::1", dst="DEAD::1", nh='UDP')
-        p_ip4 = IP(src="1.2.3.4", dst="130.67.0.1")
+        p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh='UDP')
+        p_ip4 = IP(src="1.2.3.4", dst="130.67.0.1", tos=42)
         p_payload = UDP(sport=1234, dport=1234)
 
         # IPv6 transport
         rv = self.vapi.ipip_add_tunnel(
             src_address=self.pg0.local_ip6n,
-            dst_address=self.pg1.remote_ip6n)
+            dst_address=self.pg1.remote_ip6n, tc_tos=255)
 
         sw_if_index = rv.sw_if_index
 
@@ -162,19 +163,21 @@ class TestIPIP(VppTestCase):
 
         # IPv6 in to IPv6 tunnel
         p6 = (p_ether / p_ip6 / p_payload)
-        p6_reply = (IPv6(src=self.pg0.local_ip6,
-                         dst=self.pg1.remote_ip6, hlim=63) / p_ip6 / p_payload)
+        p6_reply = (IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6,
+                         hlim=63, tc=42) /
+                    p_ip6 / p_payload)
         p6_reply[1].hlim -= 1
-        rx = self.send_and_expect(self.pg0, p6*10, self.pg1)
+        rx = self.send_and_expect(self.pg0, p6*11, self.pg1)
         for p in rx:
             self.validate(p[1], p6_reply)
 
         # IPv4 in to IPv6 tunnel
         p4 = (p_ether / p_ip4 / p_payload)
         p4_reply = (IPv6(src=self.pg0.local_ip6,
-                         dst=self.pg1.remote_ip6, hlim=63) / p_ip4 / p_payload)
+                         dst=self.pg1.remote_ip6, hlim=63, tc=42) /
+                    p_ip4 / p_payload)
         p4_reply[1].ttl -= 1
-        rx = self.send_and_expect(self.pg0, p4*10, self.pg1)
+        rx = self.send_and_expect(self.pg0, p4*11, self.pg1)
         for p in rx:
             self.validate(p[1], p4_reply)
 
@@ -188,7 +191,7 @@ class TestIPIP(VppTestCase):
                              dst=self.pg0.local_ip6) / p_ip4 / p_payload)
         p4_reply = (p_ip4 / p_payload)
         p4_reply.ttl -= 1
-        rx = self.send_and_expect(self.pg1, p4*10, self.pg0)
+        rx = self.send_and_expect(self.pg1, p4*11, self.pg0)
         for p in rx:
             self.validate(p[1], p4_reply)
 
@@ -198,7 +201,7 @@ class TestIPIP(VppTestCase):
                              dst=self.pg0.local_ip6) / p_ip6 / p_payload)
         p6_reply = (p_ip6 / p_payload)
         p6_reply.hlim = 63
-        rx = self.send_and_expect(self.pg1, p6*10, self.pg0)
+        rx = self.send_and_expect(self.pg1, p6*11, self.pg0)
         for p in rx:
             self.validate(p[1], p6_reply)
 
diff --git a/test/vpp_papi_provider.py b/test/vpp_papi_provider.py
index 105a54f55d9..f72d37df7b2 100644
--- a/test/vpp_papi_provider.py
+++ b/test/vpp_papi_provider.py
@@ -3359,14 +3359,15 @@ class VppPapiProvider(object):
                         {'sw_if_index': sw_if_index})
 
     def ipip_add_tunnel(self, src_address, dst_address, is_ipv6=1,
-                        instance=0xFFFFFFFF, fib_index=0):
+                        instance=0xFFFFFFFF, fib_index=0, tc_tos=0):
         """ IPIP tunnel Add/Del """
         return self.api(self.papi.ipip_add_tunnel,
                         {'is_ipv6': is_ipv6,
                          'instance': instance,
                          'src_address': src_address,
                          'dst_address': dst_address,
-                         'fib_index': fib_index})
+                         'fib_index': fib_index,
+                         'tc_tos': tc_tos})
 
     def ipip_del_tunnel(self, sw_if_index):
         """ IPIP tunnel Delete """