How to use netmap pkt-gen on 9.1?

[Luigi Rizzo]

On Tue, Jan 08, 2013 at 11:39:10PM +0100, Olivier Cochard-Labb? wrote:
> Hi,
> I'm try to use netmap pkt-gen on real and virtual (virtualbox)
> hardware with FreeBSD 9.1.
> My setup is pretty simple:
> 
> ( HOST1 em0:1.1.1.1 ) <------> ( em0:1.1.1.2 HOST2 )
> 
> But I didn't reach to use pkt-gen (from tools/tools/netmap), I've got
> errors (on both physical and virtual machines):
> - Unable to get if info for em0
> - Unable to mmap 0 KB
> - Unable to register interface em0
> 
> Here are all the steps I've done, where is my mistake ?

not your mistake, on stable/9 i have not merged yet the
device driver changes.
Your best option is to copy sys/dev/netmap from HEAD,
and add the device-specific chunks also from HEAD
into the various drivers (dev/e1000, dev/ixgbe, dev/re)

The changes are clearly identified by #ifdef DEV_NETMAP/#endif blocks.

cheers
luigi

> [root at HOST1]~# uname -r
> 9.1-RELEASE
> [root at HOST1]~# kldload netmap
> 018.237252 netmap_new_obj_allocator [425] objsize 1024 clustsize 4096 objects 4
> 018.248826 netmap_new_obj_allocator [503] Pre-allocated 128 clusters
> (4/512KB) for 'netmap_if'
> 018.252891 netmap_new_obj_allocator [425] objsize 36864 clustsize
> 36864 objects 1
> 018.257305 netmap_new_obj_allocator [503] Pre-allocated 200 clusters
> (36/7200KB) for 'netmap_ring'
> 018.259826 netmap_new_obj_allocator [425] objsize 2048 clustsize 4096 objects 2
> 018.332819 netmap_new_obj_allocator [503] Pre-allocated 50000 clusters
> (4/200000KB) for 'netmap_buf'
> 018.351183 netmap_memory_init [553] Have 512 KB for interfaces, 7200
> KB for rings and 195 MB for buffers
> netmap: loaded module with 202 Mbytes
> 
> [root at HOST1]~# ifconfig em0
> em0: flags=8843<UP,BROADCAST,
> RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>         options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
>         ether aa:aa:00:01:01:01
>         inet 1.1.1.1 netmask 0xffffff00 broadcast 1.1.1.255
>         inet6 fe80::a8aa:ff:fe01:101%em0 prefixlen 64 scopeid 0x1
>         nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
>         media: Ethernet autoselect (1000baseT <full-duplex>)
>         status: active
> 
> [root at HOST1]~# ping -c 1 1.1.1.2
> PING 1.1.1.2 (1.1.1.2): 56 data bytes
> 64 bytes from 1.1.1.2: icmp_seq=0 ttl=64 time=0.466 ms
> 
> --- 1.1.1.2 ping statistics ---
> 1 packets transmitted, 1 packets received, 0.0% packet loss
> round-trip min/avg/max/stddev = 0.466/0.466/0.466/0.000 ms
> [root at HOST1]~# arp 1.1.1.2
> ? (1.1.1.2) at aa:aa:00:00:02:12 on em0 expires in 1197 seconds [ethernet]
> 
> [root at HOST1]~# pkt-gen -i em0 -t 500 -s 1.1.1.1 -d 1.1.1.2 -D aa:aa:00:00:02
> main [808] ether_aton(aa:aa:00:00:02) gives 0x0
> main [876] map size is 207712 Kb
> main [882] Unable to get if info for em0
> main [889] bad nthreads 1, have 0 queues
> main [898] mmapping 0 Kbytes
> main [903] Unable to mmap 0 KB
> main [917] Unable to register interface em0
> Sending on em0: 0 queues, 1 threads and 1 cpus.
> 1.1.1.1 -> 1.1.1.2 (aa:aa:00:01:01:01 -> aa:aa:00:00:02)
> main [951] Wait 2 secs for phy reset
> main [953] Ready...
> main [1004] Unable to register em0
> main [1061] 0 pps
> Sent 0 packets, 60 bytes each, in 0.00 seconds.
> Speed: nanpps. Bandwidth: nanbps.
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