TCP differences in 7.2 vs 7.1

[Lars Eggert]

In my case, it's a

em4 at pci0:12:0:0:	class=0x020000 card=0x135e8086 chip=0x105e8086  
rev=0x06 hdr=0x00
     vendor     = 'Intel Corporation'
     device     = 'PRO/1000 PT'
     class      = network
     subclass   = ethernet

Lars

On 2009-5-14, at 11:46, Lev Serebryakov wrote:
> Hello, Lars.
> You wrote 14 мая 2009 г., 12:28:43:
>
>> Reproducing the issue is as easy as setting net.inet.tcp.tso=1.
>> What's interesting is that I only see the issue on one of the eight  
>> em
>> interfaces. That interface is connected to a D-Link DIR-655 WLAN
>> router. When I tcpdump on the other interfaces with TSO enabled, I  
>> see
>> no "IP bad-len 0" messages.
>  I have same problem (every one of 100-200 frames) on on-board if_em:
>
> em0 at pci0:0:25:0:        class=0x020000 card=0x82681043  
> chip=0x10bd8086 rev=0x02 hdr=0x00
>    vendor     = 'Intel Corporation'
>    device     = '82566DM-2 Gigabit Network Connection'
>    class      = network
>    subclass   = ethernet
>
>
>
> -- 
> // Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>
>