re0 link UP/DOWN on 8.1-STABLE amd64

[Pyun YongHyeon]

On Wed, Aug 11, 2010 at 03:50:14PM +0300, Zeus V Panchenko wrote:
> Hi All,
> 
> can enybody help with the subj, please?
> 
> problem: onboard interface re0 link state UP/DOWN flapping
> 
> 
> i have:
> # uname -a 
> FreeBSD 8.1-STABLE #0: Mon Aug  9 10:33:17 EEST 2010 amd64
> 
> # dmidecode
> ...
> Base Board Information
>      Manufacturer: ASUSTeK Computer INC.
>      Product Name: AT5NM10-I
> ...
> 
> # pciconf -lcv
> re0 at pci0:2:0:0: class=0x020000 card=0x83a31043 chip=0x816810ec rev=0x03 hdr=0x00
>     vendor     = 'Realtek Semiconductor'
>     device     = 'Gigabit Ethernet NIC(NDIS 6.0) (RTL8168/8111/8111c)'
>     class      = network
>     subclass   = ethernet
>     cap 01[40] = powerspec 3  supports D0 D1 D2 D3  current D0
>     cap 05[50] = MSI supports 1 message, 64 bit enabled with 1 message
>     cap 10[70] = PCI-Express 2 endpoint IRQ 2 max data 128(256) link x1(x1)
>     cap 11[ac] = MSI-X supports 4 messages in map 0x20
>     cap 03[cc] = VPD
> 
> 
> # ifconfig re0
> re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>         options=389b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC>
>         ether 20:cf:30:89:5e:95
>         inet 10.10.0.111 netmask 0xffff0000 broadcast 10.10.255.255
>         media: Ethernet 1000baseT <full-duplex>
>         status: active
> 
> 
> 
> 
> sporadically interface begins to flap and dmesg shows:
> ...
> Aug 11 14:29:44 kernel: re0: link state changed to DOWN
> Aug 11 14:29:47 kernel: re0: link state changed to UP
> Aug 11 14:29:58 kernel: re0: link state changed to DOWN
> Aug 11 14:30:01 kernel: re0: link state changed to UP
> ...
> 
> 
> systat doesn't show high interrupts on the card
> # systat -v
>     1 users    Load  0.06  0.02  0.00                  Aug 11 15:45
> 
> Mem:KB    REAL            VIRTUAL                       VN PAGER   SWAP PAGER
>         Tot   Share      Tot    Share    Free           in   out     in   out
> Act 1069020  177580  2968312   209660  455852  count
> All 1149408  184236 1076855k   251780          pages
> Proc:                                                            Interrupts
>   r   p   d   s   w   Csw  Trp  Sys  Int  Sof  Flt    278 cow    8057 total
>   1          74       885  842 1181   57  268  736    278 zfod        atkbd0 1
>                                                           ozfod    22 rl0 irq17
>  0.4%Sys   0.1%Intr  0.2%User  0.0%Nice 99.3%Idle        %ozfod  2000 cpu0: time
> |    |    |    |    |    |    |    |    |    |    |       daefr    33 re0 irq256
>                                                       379 prcfr     2 ahci0 257
>                                         29 dtbuf      704 totfr  2000 cpu1: time
> Namei     Name-cache   Dir-cache    100000 desvn          react  2000 cpu3: time
>    Calls    hits   %    hits   %     87484 numvn          pdwak  2000 cpu2: time
>      921     921 100                 24183 frevn          pdpgs
>                                                         3 intrn
> Disks  ada0  ada1 pass0 pass1                      576392 wire
> KB/t  21.40  0.00  0.00  0.00                     1040084 act
> tps       2     0     0     0                     1948900 inact
> MB/s   0.04  0.00  0.00  0.00                             cache
> %busy     0     0     0     0                      455852 free
>                                                    427520 buf
> 
> 
> i have changed motherboards ... the same effect. after some time the
> problem appears again
> 
> 
> is there any info i can provide?
> 

Show me the output of dmesg and "devinfo -rv | rgephy".