9.3 RELEASE not forwarding pkt-gen (netmap) packets over XenServer

[Raimundo Santos]

That is what a tcpdump says (in vm0, the router):


15:38:13.286112 00:1b:21:53:51:3d > 00:1b:21:53:51:39, ethertype IPv4
(0x0800), length 60: (tos 0x10, ttl 64, id 0, offset 0, flags [DF], proto
UDP (17), length 46)

    10.0.0.1.0 > 192.168.10.1.0: [udp sum ok] UDP, length 18

15:38:13.286119 00:1b:21:53:51:3d > 00:1b:21:53:51:39, ethertype IPv4
(0x0800), length 60: (tos 0x10, ttl 64, id 0, offset 0, flags [DF], proto
UDP (17), length 46, bad cksum 6605 (->6604)!)

    10.0.0.1.0 > 192.168.10.2.0: [bad udp cksum 0x5e7c -> 0x5e7b!] UDP,
length 18

All of these with txcsum, rxcsum and tso4 disabled.

I am trying to test the performance of this virtual router in using
dummynet to shape by IP and pkt-gen, with its said ability to generate
packets with ranges of IP sources, could be a very good traffic generator.

Once again, thank you!
Raimundo Santos