1 files changed, 53 insertions, 0 deletions
diff --git a/regress/sys/netinet/frag/frag_zerofirst.py b/regress/sys/netinet/frag/frag_zerofirst.py
new file mode 100644
index 00000000000..287e77f92a4
--- /dev/null
+++ b/regress/sys/netinet/frag/frag_zerofirst.py
@@ -0,0 +1,53 @@
+#!/usr/local/bin/python2.7
+
+print "ping fragment without payload before first fragment"
+
+# ||
+# |--------|
+#          |----|
+
+import os
+from addr import *
+from scapy.all import *
+
+pid=os.getpid()
+eid=pid & 0xffff
+payload="ABCDEFGHIJKLMNOP"
+packet=IP(src=LOCAL_ADDR, dst=REMOTE_ADDR)/ \
+    ICMP(type='echo-request', id=eid)/payload
+frag=[]
+fid=pid & 0xffff
+frag.append(IP(src=LOCAL_ADDR, dst=REMOTE_ADDR, proto=1, id=fid, flags='MF'))
+frag.append(IP(src=LOCAL_ADDR, dst=REMOTE_ADDR, proto=1, id=fid, flags='MF')/ \
+    str(packet)[20:36])
+frag.append(IP(src=LOCAL_ADDR, dst=REMOTE_ADDR, proto=1, id=fid, frag=2)/ \
+    str(packet)[36:44])
+eth=[]
+for f in frag:
+	eth.append(Ether(src=LOCAL_MAC, dst=REMOTE_MAC)/f)
+
+if os.fork() == 0:
+	time.sleep(1)
+	sendp(eth, iface=LOCAL_IF)
+	os._exit(0)
+
+ans=sniff(iface=LOCAL_IF, timeout=3, filter=
+    "ip and src "+REMOTE_ADDR+" and dst "+LOCAL_ADDR+" and icmp")
+for a in ans:
+	if a and a.type == ETH_P_IP and \
+	    a.payload.proto == 1 and \
+	    a.payload.frag == 0 and a.payload.flags == 0 and \
+	    icmptypes[a.payload.payload.type] == 'echo-reply':
+		id=a.payload.payload.id
+		print "id=%#x" % (id)
+		if id != eid:
+			print "WRONG ECHO REPLY ID"
+			exit(2)
+		data=a.payload.payload.payload.load
+		print "payload=%s" % (data)
+		if data == payload:
+			exit(0)
+		print "PAYLOAD!=%s" % (payload)
+		exit(1)
+print "NO ECHO REPLY"
+exit(2)