On Sun, Oct 16, 2011 at 02:41:08PM +0800, Samuel Kidman wrote: > On 16/10/2011 12:21 PM, Christiano F. Haesbaert wrote: > >On Sat, Oct 15, 2011 at 06:08:50PM +0800, Samuel Kidman wrote: > >>Hello > >> > >>I have just installed OpenBSD on a hobby server. All is going well > >>except I have hit a pretty major stumbling block in that I > >>can't get my network configuration working. I have assigned a static > >>IPv4 address to the server, and I tried pinging my > >>desktop computer. I opened up a packet sniffer on my desktop and I > >>can see the packets coming in from the server, > >>however the IP checksums are all set to 0. I read in the release > >>notes that OpenBSD will set the checksum to zero before > >>passing the packet to hardware to perform the checksum operation. > >>This obviously isn't working on my system, so I was > >>wondering how to get it working, or how to just get it done in software? > >> > >>I am using the re (realtek ethernet) driver. > >> > >>Regards, Sam > >Yes, re(4) has csum offloading: > > > > hwfeatures=8037<CSUM_IPv4,CSUM_TCPv4,CSUM_UDPv4,VLAN_MTU,VLAN_HWTAGGING,WOL> > > > >Are you running current ? > >Can you paste a dmesg ? > It's difficult to post the whole thing with no network connection. I > am writing down what is on screen with a pen and then typing that > into e-mails on my desktop. Here are the lines I thought were most > relevant from dmesg, I can get others if you wish: > > first line: > OpenBSD 4.9 (GENERIC) #671: Wed Mar 2 07:09:00 MST 2011 > > re0 line: > re0 at pci2 dev0 function0 "Realtek 8168" rev 0x06: unknown ASIC > (0x2c80), apic 2 int 16 (irq 10), address ff:ff:ff:ff:ff:ff > > > > >There was a bug in 4.8 I believe, maybe it snapped into 4.9, I can't > >remember. > > > >The thing is you can't enable checksumming in software, and you > >shouldn't, if you're re(4) for some reason can't do offload > >checksumming, we should be able to detect and disable. > > > >By now we enable hw checksumming for all re(4): > >sys/dev/ic/re.c:1133 > > ifp->if_capabilities = IFCAP_VLAN_MTU | IFCAP_CSUM_IPv4 | > > IFCAP_CSUM_TCPv4 | IFCAP_CSUM_UDPv4; > > > >
Run current and it will work.
