ipsec: ipsec-tun protect

please consult the new tunnel proposal at:
  https://wiki.fd.io/view/VPP/IPSec

Type: feature

Change-Id: I52857fc92ae068b85f59be08bdbea1bd5932e291
Signed-off-by: Neale Ranns <nranns@cisco.com>

src/scripts/vnet/ipsec_tun_protect

@@ -0,0 +1,71 @@
+
+create packet-generator interface pg0
+create packet-generator interface pg1
+
+pipe create
+
+ip table add 1
+set int ip table pg1 1
+set int ip table pipe0.1 1
+
+set int ip address pg0 192.168.0.1/24
+set int ip address pg1 192.168.1.1/24
+
+set int ip address pipe0.0 10.0.0.1/24
+set int ip address pipe0.1 10.0.0.2/24
+
+set int state pg0 up
+set int state pg1 up
+set int state pipe0 up
+
+ipsec sa add 20 spi 200 crypto-key 6541686776336961656264656f6f6579 crypto-alg aes-cbc-128
+ipsec sa add 30 spi 300 crypto-key 6541686776336961656264656f6f6579 crypto-alg aes-cbc-128
+
+create ipip tunnel src 10.0.0.1 dst 10.0.0.2
+create ipip tunnel src 10.0.0.2 dst 10.0.0.1
+
+ipsec tunnel protect ipip0 sa-in 20 sa-out 30
+ipsec tunnel protect ipip1 sa-in 30 sa-out 20
+
+set int state ipip0 up
+set int unnum ipip0 use pg0
+
+set int state ipip1 up
+set int ip table ipip1 1
+set int unnum ipip1 use pg1
+
+ip route add 192.168.1.0/24 via ipip0
+set ip arp pg1 192.168.1.2 00:11:22:33:44:55
+ip route add table 1 192.168.0.0/24 via ipip1
+set ip arp pg0 192.168.0.2 00:11:22:33:44:66
+
+trace add pg-input 100
+
+packet-generator new {
+  name ipsec1
+  limit 1
+  rate 1e4
+  node ip4-input
+  interface pg0
+  size 100-100
+  data {
+   UDP: 192.168.0.2 -> 192.168.1.2
+   UDP: 4321 -> 1234
+    length 72
+    incrementing 100
+  }
+}
+packet-generator new {
+  name ipsec2
+  limit 1
+  rate 1e4
+  node ip4-input
+  interface pg1
+  size 100-100
+  data {
+   UDP: 192.168.1.2 -> 192.168.0.2
+   UDP: 4321 -> 1234
+    length 72
+    incrementing 100
+  }
+}