Fix SR multicast post mfib commit

 1 - use the SR policy to construct the replicate DPO. Each bucket therein is a SR tunnel.
 2 - install a special mfib entry that links via this replicate
 3 - forwarding is now mfib-lookup -> replicate -> sr_rewrite (per-tunnel)
        no need for a separate sr_replicate node.
 4 - Stack the sr tunnel on the forwarding DPO of the first-hop FIB entry.
        no need for a second lookup post SR encap.
 5 - fix some path-list lock leaks in the MFIB entry.

Change-Id: I20de96ea4c4be4fae252625bde159d9c435c8315
Signed-off-by: Neale Ranns <nranns@cisco.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/src/scripts/vnet/sr/mcast b/src/scripts/vnet/sr/mcast
new file mode 100644
index 00000000000..50e73efabb4
--- /dev/null
+++ b/src/scripts/vnet/sr/mcast
@@ -0,0 +1,58 @@
+
+loop create
+loop create
+loop create
+loop create
+
+set int state loop0 up
+set int state loop1 up
+set int state loop2 up
+set int state loop3 up
+
+set int ip address loop0 2001::1/64
+set int ip address loop1 2001:1::1/64
+set int ip address loop2 2001:2::1/64
+set int ip address loop3 2001:3::1/64
+
+set ip6 neighbor loop1 2001:1::2 00:00:dd:ee:cc:d1
+set ip6 neighbor loop2 2001:2::2 00:00:dd:ee:cc:d2
+set ip6 neighbor loop3 2001:3::2 00:00:dd:ee:cc:d3
+
+ip route 3001::1/128 via 2001:1::2 loop1
+ip route 3001::2/128 via 2001:2::2 loop2
+ip route 3001::3/128 via 2001:3::2 loop3
+
+sr tunnel name SR1 src aaaa::2:1 dst ff19::1/128 next 3001::1 clean
+sr tunnel name SR2 src aaaa::2:2 dst ff19::2/128 next 3001::2 clean
+sr tunnel name SR3 src aaaa::2:3 dst ff19::3/128 next 3001::3 clean
+
+sr policy name MCAST1 tunnel SR1 tunnel SR2 tunnel SR3
+
+sr multicast-map address ff18::1 sr-policy MCAST1
+
+packet-generator new {
+  name x
+  limit 1
+  node ethernet-input
+  size 64-64
+  no-recycle
+  data {
+    IP6: 1.2.3 -> 4.5.6
+    ICMP: 3002::2 -> ff18::1
+    ICMP echo_request
+    incrementing 100
+  }
+}
+trace add pg-input 100
+
+sr multicast-map del address ff18::1 sr-policy MCAST1
+sr policy del name MCAST1 tunnel SR1 tunnel SR2 tunnel SR3
+
+ip route del 3001::1/128 via 2001:1::2 loop1
+ip route del 3001::2/128 via 2001:2::2 loop2
+ip route del 3001::3/128 via 2001:3::2 loop3
+
+sr tunnel del name SR1 src aaaa::2:1 dst ff19::1/128 next 3001::1 clean
+sr tunnel del name SR2 src aaaa::2:2 dst ff19::2/128 next 3001::2 clean
+sr tunnel del name SR3 src aaaa::2:3 dst ff19::3/128 next 3001::3 clean
+