Since ip case is most often used, introduce a convenience
function for that.
Signed-off-by: Isaku Yamahata <yamah...@valinux.co.jp>
---
Changes v1 -> v2:
- improve commit message
- rename arp_ether_ip -> arp_ip
---
ryu/lib/packet/arp.py | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/ryu/lib/packet/arp.py b/ryu/lib/packet/arp.py
index 3cef38d..9d0b3f8 100644
--- a/ryu/lib/packet/arp.py
+++ b/ryu/lib/packet/arp.py
@@ -14,6 +14,8 @@
# limitations under the License.
import struct
+
+from ryu.ofproto import ether
from . import packet_base
ARP_HW_TYPE_ETHERNET = 1 # ethernet hardware type
@@ -55,3 +57,10 @@ class arp(packet_base.PacketBase):
self.hlen, self.plen, self.opcode,
self.src_mac, self.src_ip, self.dst_mac,
self.dst_ip)
+
+
+def arp_ip(opcode, src_mac, src_ip, dst_mac, dst_ip):
+ return arp(ARP_HW_TYPE_ETHERNET, ether.ETH_TYPE_IP,
+ 6, # ether mac address length
+ 4, # ipv4 address length,
+ opcode, src_mac, src_ip, dst_mac, dst_ip)
--
1.7.10.4
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