def _handle_ConnectionUp (event):
# Set up this switch.
# Turn on ability to specify table in flow_mods
msg = nx.nx_flow_mod_table_id()
event.connection.send(msg)
# Clear second table
msg = nx.nx_flow_mod(command=of.OFPFC_DELETE, table_id = 1)
event.connection.send(msg)
# Learning rule in table 0
msg = nx.nx_flow_mod()
msg.table_id = 0
learn = nx.nx_action_learn(table_id=1,hard_timeout=10)
learn.spec.chain(
field=nx.NXM_OF_VLAN_TCI, n_bits=12).chain(
field=nx.NXM_OF_ETH_SRC, match=nx.NXM_OF_ETH_DST).chain(
field=nx.NXM_OF_IN_PORT, output=True)
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(1))
event.connection.send(msg)
# Fallthrough rule for table 1: flood
msg = nx.nx_flow_mod()
msg.table_id = 1
msg.priority = 1 # Low priority
msg.actions.append(of.ofp_action_output(port = of.OFPP_FLOOD))
event.connection.send(msg)
def _handle_ConnectionUp(event):
# Set up this switch.
# Turn on ability to specify table in flow_mods
msg = nx.nx_flow_mod_table_id()
event.connection.send(msg)
# Clear second table
msg = nx.nx_flow_mod(command=of.OFPFC_DELETE, table_id=1)
event.connection.send(msg)
# Learning rule in table 0
msg = nx.nx_flow_mod()
msg.table_id = 0
learn = nx.nx_action_learn(table_id=1, hard_timeout=10)
learn.spec.chain(field=nx.NXM_OF_VLAN_TCI,
n_bits=12).chain(field=nx.NXM_OF_ETH_SRC,
match=nx.NXM_OF_ETH_DST).chain(
field=nx.NXM_OF_IN_PORT, output=True)
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(1))
event.connection.send(msg)
# Fallthrough rule for table 1: flood
msg = nx.nx_flow_mod()
msg.table_id = 1
msg.priority = 1 # Low priority
msg.actions.append(of.ofp_action_output(port=of.OFPP_FLOOD))
event.connection.send(msg)
def _make_learn_action (self):
fms = nx.flow_mod_spec.new
learn = nx.nx_action_learn(table_id=1,hard_timeout=10)
learn.spec.append(fms( field=nx.NXM_OF_VLAN_TCI, n_bits=12 ))
learn.spec.append(fms( field=nx.NXM_OF_ETH_SRC, match=nx.NXM_OF_ETH_DST ))
learn.spec.append(fms( field=nx.NXM_OF_IN_PORT, output=True ))
#learn.spec = [
# nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_OF_VLAN_TCI),
# n_bits=12),
# nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_OF_ETH_SRC),
# dst=nx.nx_learn_dst_match(nx.NXM_OF_ETH_DST)),
# nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_OF_IN_PORT),
# dst=nx.nx_learn_dst_output())
#]
#learn.spec.chain(
# field=nx.NXM_OF_VLAN_TCI, n_bits=12).chain(
# field=nx.NXM_OF_ETH_SRC, match=nx.NXM_OF_ETH_DST).chain(
# field=nx.NXM_OF_IN_PORT, output=True)
return learn
def _make_learn_action(self):
fms = nx.flow_mod_spec.new
learn = nx.nx_action_learn(table_id=1, hard_timeout=10)
learn.spec.append(fms(field=nx.NXM_OF_VLAN_TCI, n_bits=12))
learn.spec.append(fms(field=nx.NXM_OF_ETH_SRC,
match=nx.NXM_OF_ETH_DST))
learn.spec.append(fms(field=nx.NXM_OF_IN_PORT, output=True))
#learn.spec = [
# nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_OF_VLAN_TCI),
# n_bits=12),
# nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_OF_ETH_SRC),
# dst=nx.nx_learn_dst_match(nx.NXM_OF_ETH_DST)),
# nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_OF_IN_PORT),
# dst=nx.nx_learn_dst_output())
#]
#learn.spec.chain(
# field=nx.NXM_OF_VLAN_TCI, n_bits=12).chain(
# field=nx.NXM_OF_ETH_SRC, match=nx.NXM_OF_ETH_DST).chain(
# field=nx.NXM_OF_IN_PORT, output=True)
return learn
def _handle_ConnectionUp(self, event):
# Initialize Nicira
msg = nx.nx_flow_mod()
event.connection.send(msg)
# Signal Table use
msg = nx.nx_flow_mod_table_id()
event.connection.send(msg)
#Table 1 -> TCP Table 2 -> ARP
for temp_table_id in range(1, 5):
msg = nx.nx_flow_mod(command=of.OFPFC_DELETE,
table_id=temp_table_id)
event.connection.send(msg)
#Table 0 rule: Selection of tables
#IP Packet Handling / TCP
msg = nx.nx_flow_mod()
msg.table_id = 0
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.priority = 65000
msg.actions.append(nx.nx_multipath(dst=nx.NXM_NX_REG2))
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=1))
event.connection.send(msg)
#ARP Packet Handling
msg = nx.nx_flow_mod()
msg.table_id = 0
msg.priority = 65001
msg.match.eth_type = pkt.ethernet.ARP_TYPE
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=4))
event.connection.send(msg)
log.info("Table 0 done")
#Table 1 Rules
# TBD: State Machine and Hash value
# New flow function
msg = nx.nx_flow_mod()
msg.table_id = 1
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.priority = 65004
# Signifying New flow
msg.actions.append(nx.nx_reg_load(dst=nx.NXM_NX_REG0, value=0x0))
# currently learning based on eth address
# no hash
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=2))
event.connection.send(msg)
#Table 2 Rules
#1. Sync (Should be a Sync)
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.NXM_NX_REG0 = 0
msg.match.tcp_flags = 2
msg.priority = 65001
# learn function for table 1
learn = nx.nx_action_learn(table_id=1, priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(
fms(load=nx.NXM_NX_REG0,
src=nx.nx_learn_src_immediate.u32(None, 1)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=3))
event.connection.send(msg)
#2. Sync Ack (Should be after sync)
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x12
msg.priority = 65002
msg.match.NXM_NX_REG0 = 1
# learn function for table 1
learn = nx.nx_action_learn(table_id=1, priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(
fms(load=nx.NXM_NX_REG0,
src=nx.nx_learn_src_immediate.u32(None, 2)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=3))
event.connection.send(msg)
#3. Ack
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x010
msg.priority = 65003
msg.match.NXM_NX_REG0 = 2
# learn function for table 1
learn = nx.nx_action_learn(table_id=1, priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(
fms(load=nx.NXM_NX_REG0,
src=nx.nx_learn_src_immediate.u32(None, 3)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=3))
event.connection.send(msg)
#4. Fin
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x010
msg.priority = 65003
msg.match.NXM_NX_REG0 = 3
# learn function for table 1
learn = nx.nx_action_learn(table_id=1, priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(
fms(load=nx.NXM_NX_REG0,
src=nx.nx_learn_src_immediate.u32(None, 4)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=3))
event.connection.send(msg)
#5. Fin-Ack
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x010
msg.priority = 65003
msg.match.NXM_NX_REG0 = 4
# learn function for table 1
learn = nx.nx_action_learn(table_id=1, priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(
fms(load=nx.NXM_NX_REG0,
src=nx.nx_learn_src_immediate.u32(None, 5)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=3))
event.connection.send(msg)
#7. Ack
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x010
msg.priority = 65003
msg.match.NXM_NX_REG0 = 5
# learn function for table 1
learn = nx.nx_action_learn(table_id=1, priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(
fms(load=nx.NXM_NX_REG0,
src=nx.nx_learn_src_immediate.u32(None, 6)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=3))
event.connection.send(msg)
#8. RST
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x14
msg.priority = 65003
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=3))
event.connection.send(msg)
#9. PSH-Ack
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x18
msg.priority = 65003
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=3))
event.connection.send(msg)
#9. Ack
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x10
msg.priority = 65003
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=3))
event.connection.send(msg)
#send to controller currently sending to the destination as no old state stored
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.priority = 64999
msg.actions.append(nx.nx_reg_load(dst=nx.NXM_NX_REG1, value=int(1)))
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table=3))
event.connection.send(msg)
log.info("Table 2 done")
#Table 3 Rules: Forward the packet to the Destination
msg = nx.nx_flow_mod()
msg.table_id = 3
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_dst = "10.0.0.1"
msg.priority = 65001
msg.actions.append(of.ofp_action_output(port=1))
event.connection.send(msg)
msg = nx.nx_flow_mod()
msg.table_id = 3
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_dst = "10.0.0.2"
msg.priority = 65001
msg.actions.append(of.ofp_action_output(port=2))
event.connection.send(msg)
msg = nx.nx_flow_mod()
msg.table_id = 3
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_dst = "10.0.0.3"
msg.priority = 65001
msg.actions.append(of.ofp_action_output(port=3))
event.connection.send(msg)
#send to controller
msg = nx.nx_flow_mod()
msg.table_id = 3
msg.match.NXM_NX_REG1 = 1
msg.priority = 65005
msg.actions.append(of.ofp_action_output(port=of.OFPP_CONTROLLER))
event.connection.send(msg)
log.info("Table 3 done")
#Table 4 Rules
msg = nx.nx_flow_mod()
msg.table_id = 4
msg.actions.append(of.ofp_action_output(port=of.OFPP_FLOOD))
event.connection.send(msg)
log.info("Table 4 done")
def _handle_ConnectionUp(self, event):
# Initialize Nicira
msg = nx.nx_flow_mod()
event.connection.send(msg)
# Signal Table use
msg = nx.nx_flow_mod_table_id()
event.connection.send(msg)
#Table 1 -> TCP Table 2 -> ARP
for temp_table_id in range(1, 5):
msg = nx.nx_flow_mod(command=of.OFPFC_DELETE, table_id = temp_table_id)
event.connection.send(msg)
#Table 0 rule: Selection of tables
#IP Packet Handling / TCP
msg = nx.nx_flow_mod()
msg.table_id = 0
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.priority = 65000
msg.actions.append(nx.nx_multipath(dst = nx.NXM_NX_REG2))
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 1))
event.connection.send(msg)
#ARP Packet Handling
msg = nx.nx_flow_mod()
msg.table_id = 0
msg.priority = 65001
msg.match.eth_type = pkt.ethernet.ARP_TYPE
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 4))
event.connection.send(msg)
log.info("Table 0 done")
#Table 1 Rules
# TBD: State Machine and Hash value
# New flow function
msg = nx.nx_flow_mod()
msg.table_id = 1
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.priority = 65004
# Signifying New flow
msg.actions.append(nx.nx_reg_load(dst=nx.NXM_NX_REG0, value=0x0))
# currently learning based on eth address
# no hash
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 2))
event.connection.send(msg)
#Table 2 Rules
#1. Sync (Should be a Sync)
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.NXM_NX_REG0 = 0
msg.match.tcp_flags = 2
msg.priority = 65001
# learn function for table 1
learn = nx.nx_action_learn(table_id=1,priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(fms(load=nx.NXM_NX_REG0, src=nx.nx_learn_src_immediate.u32(None, 1)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True ))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 3))
event.connection.send(msg)
#2. Sync Ack (Should be after sync)
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x12
msg.priority = 65002
msg.match.NXM_NX_REG0 = 1
# learn function for table 1
learn = nx.nx_action_learn(table_id=1,priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(fms(load=nx.NXM_NX_REG0, src=nx.nx_learn_src_immediate.u32(None, 2)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True ))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 3))
event.connection.send(msg)
#3. Ack
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x010
msg.priority = 65003
msg.match.NXM_NX_REG0 = 2
# learn function for table 1
learn = nx.nx_action_learn(table_id=1,priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(fms(load=nx.NXM_NX_REG0, src=nx.nx_learn_src_immediate.u32(None, 3)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True ))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 3))
event.connection.send(msg)
#4. Fin
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x010
msg.priority = 65003
msg.match.NXM_NX_REG0 = 3
# learn function for table 1
learn = nx.nx_action_learn(table_id=1,priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(fms(load=nx.NXM_NX_REG0, src=nx.nx_learn_src_immediate.u32(None, 4)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True ))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 3))
event.connection.send(msg)
#5. Fin-Ack
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x010
msg.priority = 65003
msg.match.NXM_NX_REG0 = 4
# learn function for table 1
learn = nx.nx_action_learn(table_id=1,priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(fms(load=nx.NXM_NX_REG0, src=nx.nx_learn_src_immediate.u32(None, 5)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True ))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 3))
event.connection.send(msg)
#7. Ack
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x010
msg.priority = 65003
msg.match.NXM_NX_REG0 = 5
# learn function for table 1
learn = nx.nx_action_learn(table_id=1,priority=65111)
learn.spec = [
nx.flow_mod_spec(src=nx.nx_learn_src_field(nx.NXM_NX_REG2),
dst=nx.nx_learn_dst_match(nx.NXM_NX_REG2)),
]
fms = nx.flow_mod_spec.new
learn.spec.append(fms(load=nx.NXM_NX_REG0, src=nx.nx_learn_src_immediate.u32(None, 6)))
learn.spec.append(fms(field=nx.NXM_NX_REG0, reserved=True ))
msg.actions.append(learn)
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 3))
event.connection.send(msg)
#8. RST
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x14
msg.priority = 65003
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 3))
event.connection.send(msg)
#9. PSH-Ack
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x18
msg.priority = 65003
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 3))
event.connection.send(msg)
#9. Ack
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_proto = ipv4.TCP_PROTOCOL
msg.match.tcp_flags = 0x10
msg.priority = 65003
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 3))
event.connection.send(msg)
#send to controller currently sending to the destination as no old state stored
msg = nx.nx_flow_mod()
msg.table_id = 2
msg.priority = 64999
msg.actions.append(nx.nx_reg_load(dst=nx.NXM_NX_REG1, value=int(1)))
msg.actions.append(nx.nx_action_resubmit.resubmit_table(table = 3))
event.connection.send(msg)
log.info("Table 2 done")
#Table 3 Rules: Forward the packet to the Destination
msg = nx.nx_flow_mod()
msg.table_id = 3
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_dst = "10.0.0.1"
msg.priority = 65001
msg.actions.append(of.ofp_action_output(port = 1))
event.connection.send(msg)
msg = nx.nx_flow_mod()
msg.table_id = 3
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_dst = "10.0.0.2"
msg.priority = 65001
msg.actions.append(of.ofp_action_output(port = 2))
event.connection.send(msg)
msg = nx.nx_flow_mod()
msg.table_id = 3
msg.match.eth_type = pkt.ethernet.IP_TYPE
msg.match.ip_dst = "10.0.0.3"
msg.priority = 65001
msg.actions.append(of.ofp_action_output(port = 3))
event.connection.send(msg)
#send to controller
msg = nx.nx_flow_mod()
msg.table_id = 3
msg.match.NXM_NX_REG1 = 1
msg.priority = 65005
msg.actions.append(of.ofp_action_output(port = of.OFPP_CONTROLLER))
event.connection.send(msg)
log.info("Table 3 done")
#Table 4 Rules
msg = nx.nx_flow_mod()
msg.table_id = 4
msg.actions.append(of.ofp_action_output(port = of.OFPP_FLOOD))
event.connection.send(msg)
log.info("Table 4 done")