openstack/os-ken
Code Issues Proposed changes

doc: update packet library

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Use Packet class iterator feature

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
This commit is contained in:
FUJITA Tomonori 2012-10-05 19:01:55 +09:00
parent fd692d330d
commit ef8284dfd1
1 changed files with 9 additions and 10 deletions
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19
doc/source/library_packet.rst
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@ -55,19 +55,18 @@ is used:
@handler.set_ev_cls(ofp_event.EventOFPPacketIn, handler.MAIN_DISPATCHER)
def packet_in_handler(self, ev):
pkt = packet.Packet(array.array('B', ev.msg.data))
for p in pkt.protocols:
print p
vp = pkt.find_protocol('vlan')
if vp:
print "vlan found:", vp.vid
for p in pkt:
print p.protocol_name, p
if p.protocol_name == 'vlan':
print 'vid = ', p.vid
You see something like::
<ryu.lib.packet.ethernet.ethernet object at 0x107a5d790>
<ryu.lib.packet.vlan.vlan object at 0x107a5d7d0>
<ryu.lib.packet.ipv4.ipv4 object at 0x107a5d810>
<ryu.lib.packet.tcp.tcp object at 0x107a5d850>
vlan found: 10
ethernet <ryu.lib.packet.ethernet.ethernet object at 0x107a5d790>
vlan <ryu.lib.packet.vlan.vlan object at 0x107a5d7d0>
vid = 10
ipv4 <ryu.lib.packet.ipv4.ipv4 object at 0x107a5d810>
tcp <ryu.lib.packet.tcp.tcp object at 0x107a5d850>