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Add EXERCISE 8 on GTP termination with fabric.p4 (#47)
* Use custom stratum_bmv2 image for both mininet and ptf This is required to use scapy in Mininet. Before the ptf image was essentially mn-stratum plus scapy, ptf, etc. I renamed that to a generic stratum_bmv2 and use it for both mininet (in docker-compose) and to run ptf tests, instead of using two different images. * Progress on exercise 8 * Bump stratum_bmv2 * Fix loop by disabling ip4 forwarding Perhaps it is enabled by default in Docker for Mac? * Fix flowrule-gtp.json solution * Add make targets to push flow rules * Check gtp solution in Travis * Add instructions for Exercise 8 * Not exercise 4 * Update topo img * Edits * Add link to main readme
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| { | ||
| "flows": [ | ||
| { | ||
| "deviceId": "device:leaf1", | ||
| "tableId": "FabricIngress.spgw_ingress.dl_sess_lookup", | ||
| "priority": 10, | ||
| "timeout": 0, | ||
| "isPermanent": true, | ||
| "selector": { | ||
| "criteria": [ | ||
| { | ||
| "type": "IPV4_DST", | ||
| "ip": "<INSERT UE IP ADDRESS HERE>/32" | ||
| } | ||
| ] | ||
| }, | ||
| "treatment": { | ||
| "instructions": [ | ||
| { | ||
| "type": "PROTOCOL_INDEPENDENT", | ||
| "subtype": "ACTION", | ||
| "actionId": "FabricIngress.spgw_ingress.set_dl_sess_info", | ||
| "actionParams": { | ||
| "teid": "BEEF", | ||
| "s1u_enb_addr": "0a006401", | ||
| "s1u_sgw_addr": "0a0064fe" | ||
| } | ||
| } | ||
| ] | ||
| } | ||
| } | ||
| ] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| { | ||
| "devices": { | ||
| "device:leaf1": { | ||
| "basic": { | ||
| "managementAddress": "grpc://mininet:50001?device_id=1", | ||
| "driver": "stratum-bmv2", | ||
| "pipeconf": "org.onosproject.pipelines.fabric", | ||
| "locType": "grid", | ||
| "gridX": 200, | ||
| "gridY": 600 | ||
| }, | ||
| "segmentrouting": { | ||
| "name": "leaf1", | ||
| "ipv4NodeSid": 101, | ||
| "ipv4Loopback": "192.168.1.1", | ||
| "routerMac": "00:AA:00:00:00:01", | ||
| "isEdgeRouter": true, | ||
| "adjacencySids": [] | ||
| } | ||
| }, | ||
| "device:leaf2": { | ||
| "basic": { | ||
| "managementAddress": "grpc://mininet:50002?device_id=1", | ||
| "driver": "stratum-bmv2", | ||
| "pipeconf": "org.onosproject.pipelines.fabric", | ||
| "locType": "grid", | ||
| "gridX": 800, | ||
| "gridY": 600 | ||
| }, | ||
| "segmentrouting": { | ||
| "name": "leaf2", | ||
| "ipv4NodeSid": 102, | ||
| "ipv4Loopback": "192.168.1.2", | ||
| "routerMac": "00:AA:00:00:00:02", | ||
| "isEdgeRouter": true, | ||
| "adjacencySids": [] | ||
| } | ||
| }, | ||
| "device:spine1": { | ||
| "basic": { | ||
| "managementAddress": "grpc://mininet:50003?device_id=1", | ||
| "driver": "stratum-bmv2", | ||
| "pipeconf": "org.onosproject.pipelines.fabric", | ||
| "locType": "grid", | ||
| "gridX": 400, | ||
| "gridY": 400 | ||
| }, | ||
| "segmentrouting": { | ||
| "name": "spine1", | ||
| "ipv4NodeSid": 201, | ||
| "ipv4Loopback": "192.168.2.1", | ||
| "routerMac": "00:BB:00:00:00:01", | ||
| "isEdgeRouter": false, | ||
| "adjacencySids": [] | ||
| } | ||
| }, | ||
| "device:spine2": { | ||
| "basic": { | ||
| "managementAddress": "grpc://mininet:50004?device_id=1", | ||
| "driver": "stratum-bmv2", | ||
| "pipeconf": "org.onosproject.pipelines.fabric", | ||
| "locType": "grid", | ||
| "gridX": 600, | ||
| "gridY": 400 | ||
| }, | ||
| "segmentrouting": { | ||
| "name": "spine2", | ||
| "ipv4NodeSid": 202, | ||
| "ipv4Loopback": "192.168.2.2", | ||
| "routerMac": "00:BB:00:00:00:02", | ||
| "isEdgeRouter": false, | ||
| "adjacencySids": [] | ||
| } | ||
| } | ||
| }, | ||
| "ports": { | ||
| "device:leaf1/3": { | ||
| "interfaces": [ | ||
| { | ||
| "name": "leaf1-3", | ||
| "ips": [ | ||
| "10.0.100.254/24" | ||
| ], | ||
| "vlan-untagged": 100 | ||
| } | ||
| ] | ||
| }, | ||
| "device:leaf2/3": { | ||
| "interfaces": [ | ||
| { | ||
| "name": "leaf2-3", | ||
| "ips": [ | ||
| "10.0.200.254/24" | ||
| ], | ||
| "vlan-untagged": 200 | ||
| } | ||
| ] | ||
| } | ||
| }, | ||
| "hosts": { | ||
| "00:00:00:00:00:10/None": { | ||
| "basic": { | ||
| "name": "enodeb", | ||
| "gridX": 100, | ||
| "gridY": 700, | ||
| "locType": "grid", | ||
| "ips": [ | ||
| "10.0.100.1" | ||
| ], | ||
| "locations": [ | ||
| "device:leaf1/3" | ||
| ] | ||
| } | ||
| }, | ||
| "00:00:00:00:00:20/None": { | ||
| "basic": { | ||
| "name": "pdn", | ||
| "gridX": 850, | ||
| "gridY": 700, | ||
| "locType": "grid", | ||
| "ips": [ | ||
| "10.0.200.1" | ||
| ], | ||
| "locations": [ | ||
| "device:leaf2/3" | ||
| ] | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| #!/usr/bin/python | ||
|
|
||
| # Script used in Exercise 8 that sniffs packets and prints on screen whether | ||
| # they are GTP encapsulated or not. | ||
|
|
||
| import signal | ||
| import sys | ||
|
|
||
| from ptf.packet import IP | ||
| from scapy.contrib import gtp | ||
| from scapy.sendrecv import sniff | ||
|
|
||
| pkt_count = 0 | ||
|
|
||
|
|
||
| def handle_pkt(pkt, ex): | ||
| global pkt_count | ||
| pkt_count = pkt_count + 1 | ||
| if gtp.GTP_U_Header in pkt: | ||
| is_gtp_encap = True | ||
| else: | ||
| is_gtp_encap = False | ||
|
|
||
| print "[%d] %d bytes: %s -> %s, is_gtp_encap=%s\n\t%s" \ | ||
| % (pkt_count, len(pkt), pkt[IP].src, pkt[IP].dst, | ||
| is_gtp_encap, pkt.summary()) | ||
|
|
||
| if is_gtp_encap and ex: | ||
| exit() | ||
|
|
||
|
|
||
| print "Will print a line for each UDP packet received..." | ||
|
|
||
|
|
||
| def handle_timeout(signum, frame): | ||
| print "Timeout! Did not receive any GTP packet" | ||
| exit(1) | ||
|
|
||
|
|
||
| exitOnSuccess = False | ||
| if len(sys.argv) > 1 and sys.argv[1] == "-e": | ||
| # wait max 10 seconds or exit | ||
| signal.signal(signal.SIGALRM, handle_timeout) | ||
| signal.alarm(10) | ||
| exitOnSuccess = True | ||
|
|
||
| sniff(count=0, store=False, filter="udp", | ||
| prn=lambda x: handle_pkt(x, exitOnSuccess)) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| #!/usr/bin/python | ||
|
|
||
| # Script used in Exercise 8. | ||
| # Send downlink packets to UE address. | ||
|
|
||
| from scapy.layers.inet import IP, UDP | ||
| from scapy.sendrecv import send | ||
|
|
||
| UE_ADDR = '17.0.0.1' | ||
| RATE = 5 # packets per second | ||
| PAYLOAD = ' '.join(['P4 is great!'] * 50) | ||
|
|
||
| print "Sending %d UDP packets per second to %s..." % (RATE, UE_ADDR) | ||
|
|
||
| pkt = IP(dst=UE_ADDR) / UDP(sport=80, dport=400) / PAYLOAD | ||
| send(pkt, inter=1.0 / RATE, loop=True, verbose=True) |
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