packet lib to string: inherits StringifyMixin

Some class inherits stringify.StringifyMixin

and, remove class variable 'tlvs' (not used as class variable
and interferes to string) from lldp.lldp

Signed-off-by: WATANABE Fumitaka <watanabe.fumitaka@nttcom.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

ryu/lib/packet/dhcp.py

@@ -58,6 +58,8 @@ import socket
 import struct
 
 from . import packet_base
+from ryu.lib import stringify
+
 
 DHCP_BOOT_REQUEST = 1
 DHCP_BOOT_REPLY = 2
@@ -190,7 +192,7 @@ class dhcp(packet_base.PacketBase):
                            self.chaddr, self.sname, self.boot_file, seri_opt)
 
 
-class options(object):
+class options(stringify.StringifyMixin):
     """DHCP (RFC 2132) options encoder/decoder class.
 
     This is used with ryu.lib.packet.dhcp.dhcp.
@@ -250,7 +252,7 @@ class options(object):
         return seri_opt
 
 
-class option(object):
+class option(stringify.StringifyMixin):
     """DHCP (RFC 2132) options encoder/decoder class.
 
     This is used with ryu.lib.packet.dhcp.dhcp.options.

ryu/lib/packet/icmp.py

@@ -17,6 +17,7 @@ import struct
 
 from . import packet_base
 from . import packet_utils
+from ryu.lib import stringify
 
 
 ICMP_ECHO_REPLY = 0
@@ -114,7 +115,7 @@ class icmp(packet_base.PacketBase):
 
 
 @icmp.register_icmp_type(ICMP_ECHO_REPLY, ICMP_ECHO_REQUEST)
-class echo(object):
+class echo(stringify.StringifyMixin):
     """ICMP sub encoder/decoder class for Echo and Echo Reply messages.
 
     This is used with ryu.lib.packet.icmp.icmp for
@@ -164,7 +165,7 @@ class echo(object):
 
 
 @icmp.register_icmp_type(ICMP_DEST_UNREACH)
-class dest_unreach(object):
+class dest_unreach(stringify.StringifyMixin):
     """ICMP sub encoder/decoder class for Destination Unreachable Message.
 
     This is used with ryu.lib.packet.icmp.icmp for
@@ -220,7 +221,7 @@ class dest_unreach(object):
 
 
 @icmp.register_icmp_type(ICMP_TIME_EXCEEDED)
-class TimeExceeded(object):
+class TimeExceeded(stringify.StringifyMixin):
     """ICMP sub encoder/decoder class for Time Exceeded Message.
 
     This is used with ryu.lib.packet.icmp.icmp for

ryu/lib/packet/icmpv6.py

@@ -21,6 +21,7 @@ import binascii
 from . import packet_base
 from . import packet_utils
 from ryu.lib import addrconv
+from ryu.lib import stringify
 
 ICMPV6_DST_UNREACH = 1       # dest unreachable, codes:
 ICMPV6_PACKET_TOO_BIG = 2       # packet too big
@@ -125,7 +126,7 @@ class icmpv6(packet_base.PacketBase):
 
 
 @icmpv6.register_icmpv6_type(ND_NEIGHBOR_SOLICIT, ND_NEIGHBOR_ADVERT)
-class nd_neighbor(object):
+class nd_neighbor(stringify.StringifyMixin):
     """ICMPv6 sub encoder/decoder class for Neighbor Solicitation and
     Neighbor Advertisement messages. (RFC 4861)
 
@@ -210,7 +211,7 @@ class nd_neighbor(object):
 
 @nd_neighbor.register_nd_option_type(nd_neighbor.ND_OPTION_SLA,
                                      nd_neighbor.ND_OPTION_TLA)
-class nd_option_la(object):
+class nd_option_la(stringify.StringifyMixin):
     """ICMPv6 sub encoder/decoder class for Neighbor discovery
     Source/Target Link-Layer Address Option. (RFC 4861)
 
@@ -263,7 +264,7 @@ class nd_option_la(object):
 
 
 @icmpv6.register_icmpv6_type(ICMPV6_ECHO_REPLY, ICMPV6_ECHO_REQUEST)
-class echo(object):
+class echo(stringify.StringifyMixin):
     """ICMPv6 sub encoder/decoder class for Echo Request and Echo Reply
     messages.
 

ryu/lib/packet/llc.py

@@ -90,6 +90,7 @@ Control field
 import struct
 from . import bpdu
 from . import packet_base
+from ryu.lib import stringify
 
 
 SAP_BDPU = 0x42
@@ -164,7 +165,7 @@ class llc(packet_base.PacketBase):
 
 
 @llc.register_control_type
-class ControlFormatI(object):
+class ControlFormatI(stringify.StringifyMixin):
     """LLC sub encoder/decoder class for control I-format field.
 
     An instance has the following attributes at least.
@@ -213,7 +214,7 @@ class ControlFormatI(object):
 
 
 @llc.register_control_type
-class ControlFormatS(object):
+class ControlFormatS(stringify.StringifyMixin):
     """LLC sub encoder/decoder class for control S-format field.
 
     An instance has the following attributes at least.
@@ -265,7 +266,7 @@ class ControlFormatS(object):
 
 
 @llc.register_control_type
-class ControlFormatU(object):
+class ControlFormatU(stringify.StringifyMixin):
     """LLC sub encoder/decoder class for control U-format field.
 
     An instance has the following attributes at least.

ryu/lib/packet/lldp.py

@@ -41,6 +41,7 @@ optional TLV may be inserted in any order
 """
 
 import struct
+from ryu.lib import stringify
 from ryu.lib.packet import packet_base
 
 
@@ -70,7 +71,7 @@ LLDP_TLV_MANAGEMENT_ADDRESS = 8         # Management Address
 LLDP_TLV_ORGANIZATIONALLY_SPECIFIC = 127  # organizationally Specific TLVs
 
 
-class LLDPBasicTLV(object):
+class LLDPBasicTLV(stringify.StringifyMixin):
     _LEN_MIN = 0
     _LEN_MAX = 511
     tlv_type = None
@@ -106,7 +107,6 @@ class LLDPBasicTLV(object):
 
 class lldp(packet_base.PacketBase):
     _tlv_parsers = {}
-    tlvs = []
 
     def __init__(self, tlvs):
         super(lldp, self).__init__()

ryu/lib/packet/packet_base.py

@@ -14,9 +14,10 @@
 # limitations under the License.
 
 import abc
+from ryu.lib import stringify
 
 
-class PacketBase(object):
+class PacketBase(stringify.StringifyMixin):
     """A base class for a protocol (ethernet, ipv4, ...) header."""
     __metaclass__ = abc.ABCMeta
     _TYPES = {}