def __init__(self, **kwargs):
ofp_action_set_field.__init__(self)
self.type = OFPAT_SET_FIELD
self.len = self.__len__()
self.field = match_list()
for (k, v) in kwargs.items():
if hasattr(self, k):
setattr(self, k, v)
else:
raise NameError("field %s does not exist in %s" % (k, self.__class__))
def packet_to_flow_match(packet):
"""
Create a flow match that matches packet with the given wildcards
@param packet The packet to use as a flow template
@param pkt_format Currently only L2 is supported. Will indicate the
overall packet type for parsing
@return An ofp_match object if successful. None if format is not
recognized. The wildcards of the match will be cleared for the
values extracted from the packet.
@todo check min length of packet
@todo Check if packet is other than L2 format
@todo implement other fields covered by OpenFlow 1.2
"""
match_ls = match_list()
if Ether in packet:
ether = packet[Ether]
eth_type = match.eth_type(ether.type)
eth_dst = match.eth_dst(parse_mac(ether.dst))
eth_src = match.eth_src(parse_mac(ether.src))
match_ls.add(eth_type)
match_ls.add(eth_dst)
match_ls.add(eth_src)
else:
return match_ls
if Dot1Q in packet:
#TODO: nicer way to get last vlan tag?
vlan = packet[Dot1Q:0]
vlan_vid = match.vlan_vid(vlan.vlan)
vlan_pcp = match.vlan_pcp(vlan.prio)
match_ls.add(vlan_vid)
match_ls.add(vlan_pcp)
vlan_pl = vlan.payload
while vlan_pl is not None and vlan_pl.name == Dot1Q.name:
vlan = vlan_pl
vlan_pl = vlan.payload
#We need to overwrite the already
# inserted eth_type
eth_index = match.tlvs.index()
eth_type = match.eth_type(vlan.type)
match_ls.tlvs.insert(vlan.type,eth_index)
#TODO ARP
if MPLS in packet:
mpls = packet[MPLS:0]
mpls_label = match.mpls_label(mpls.label)
mpls_tc = match.mpls_tc(mpls.cos)
match_ls.add(mpls_label)
match_ls.add(mpls_tc)
return match_ls
if IP in packet:
ip = packet[IP]
ipv4_src = match.ipv4_src(parse_ip(ip.src))
ipv4_dst = match.ipv4_dst(parse_ip(ip.dst))
ip_dscp = match.ip_dscp(ip.tos >> 2)
ip_ecn = match.ip_ecn(ip.tos & 0x03)
match_ls.add(ipv4_src)
match_ls.add(ipv4_dst)
match_ls.add(ip_dscp)
match_ls.add(ip_ecn)
else:
return match_ls
if TCP in packet:
tcp = packet[TCP]
ip_proto = match.ip_proto(6)
tcp_src = match.tcp_src(tcp.sport)
tcp_dst = match.tcp_dst(tcp.dport)
match_ls.add(ip_proto)
match_ls.add(tcp_src)
match_ls.add(tcp_dst)
return match_ls
if UDP in packet:
udp = packet[UDP]
ip_proto = match.ip_proto(17)
udp_src = match.tcp_src(udp.sport)
udp_dst = match.tcp_dst(udp.dport)
match_ls.add(ip_proto)
match_ls.add(udp_src)
match_ls.add(udp_dst)
return match_ls
if ICMP in packet:
icmp = packet[ICMP]
ip_proto = match.ip_proto(1)
icmp_type = match.icmp_type(icmp.type)
icmp_code = match.icmp_code(icmp.code)
match_ls.add(icmp_type)
match_ls.add(icmp_code)
return match_ls
return match_ls
def packet_to_flow_match(packet):
"""
Create a flow match that matches packet with the given wildcards
@param packet The packet to use as a flow template
@param pkt_format Currently only L2 is supported. Will indicate the
overall packet type for parsing
@return An ofp_match object if successful. None if format is not
recognized. The wildcards of the match will be cleared for the
values extracted from the packet.
@todo check min length of packet
@todo Check if packet is other than L2 format
@todo implement other fields covered by OpenFlow 1.2
"""
match_ls = match_list()
if Ether in packet:
ether = packet[Ether]
eth_type = match.eth_type(ether.type)
eth_dst = match.eth_dst(parse_mac(ether.dst))
eth_src = match.eth_src(parse_mac(ether.src))
match_ls.add(eth_type)
match_ls.add(eth_dst)
match_ls.add(eth_src)
else:
return match_ls
if Dot1Q in packet:
#TODO: nicer way to get last vlan tag?
vlan = packet[Dot1Q:0]
vlan_vid = match.vlan_vid(vlan.vlan)
vlan_pcp = match.vlan_pcp(vlan.prio)
match_ls.add(vlan_vid)
match_ls.add(vlan_pcp)
vlan_pl = vlan.payload
while vlan_pl is not None and vlan_pl.name == Dot1Q.name:
vlan = vlan_pl
vlan_pl = vlan.payload
#We need to overwrite the already
# inserted eth_type
eth_index = match.tlvs.index()
eth_type = match.eth_type(vlan.type)
match_ls.tlvs.insert(vlan.type, eth_index)
#TODO ARP
if MPLS in packet:
mpls = packet[MPLS:0]
mpls_label = match.mpls_label(mpls.label)
mpls_tc = match.mpls_tc(mpls.cos)
match_ls.add(mpls_label)
match_ls.add(mpls_tc)
return match_ls
if IP in packet:
ip = packet[IP]
ipv4_src = match.ipv4_src(parse_ip(ip.src))
ipv4_dst = match.ipv4_dst(parse_ip(ip.dst))
ip_dscp = match.ip_dscp(ip.tos >> 2)
ip_ecn = match.ip_ecn(ip.tos & 0x03)
match_ls.add(ipv4_src)
match_ls.add(ipv4_dst)
match_ls.add(ip_dscp)
match_ls.add(ip_ecn)
else:
return match_ls
if TCP in packet:
tcp = packet[TCP]
ip_proto = match.ip_proto(6)
tcp_src = match.tcp_src(tcp.sport)
tcp_dst = match.tcp_dst(tcp.dport)
match_ls.add(ip_proto)
match_ls.add(tcp_src)
match_ls.add(tcp_dst)
return match_ls
if UDP in packet:
udp = packet[UDP]
ip_proto = match.ip_proto(17)
udp_src = match.tcp_src(udp.sport)
udp_dst = match.tcp_dst(udp.dport)
match_ls.add(ip_proto)
match_ls.add(udp_src)
match_ls.add(udp_dst)
returnmatch_ls
if ICMP in packet:
icmp = packet[ICMP]
ip_proto = match.ip_proto(1)
icmp_type = match.icmp_type(icmp.type)
icmp_code = match.icmp_code(icmp.code)
match_ls.add(icmp_type)
match_ls.add(icmp_code)
return match_ls
return match_ls
def __init__(self):
ofp_action_set_field.__init__(self)
self.type = OFPAT_SET_FIELD
self.len = self.__len__()
self.field = match_list()
def __init__(self):
ofp_action_set_field.__init__(self)
self.type = OFPAT_SET_FIELD
self.len = self.__len__()
self.field = match_list()
