Hi,
as I mentioned earlier, I have a test FTP/HTTP server running
OpenBSD-current on HP notebook Compaq nc6000, and I increased tcp send
space to make it send stuff faster.
In my earlier mail I mentioned, that when it sends stuff really fast
(a box besides downloads a file via fast ethernet link) bge0 stops
transmission (my ssh sessions pauses too) and I see a warning on the
console about bge watchdog timeout and reset of the device. If the
transmission of data is stopped by the time the bge resets, it
recovers. Otherwise it freezes for some time with the watchdog warning
again.
Today I tried to download a 4MB file from nearby test linux server to
that FTP server of mine and had
tcpdump -i eth0 -s 2000 -w capture.pcap host linux.test.server
command running and then I find difference between the results of
tcpdump run on the linux server and the one run on OpenBSD. The linux
one shows 4847 packets captured, OpenBSD one shows 4505. Also OpenBSD
capture loaded in Wireshark (ver. 1.2.2) shows several bunches of TCP
ACK entitled "TCP ACKed lost segment". This is the conclusion of the
Wireshark TCP analysis, which says the capture file contains ACKs to a
TCP segments that are missing from the capture file.
The server IPv4 setup is trivial, static IP, static default route. The
server also has gif0 configured to a IPv6 provider (if it counts
here), with IPv6 default route being set to the tunnel. The box also
has a pf ruleset that allows SSH inside from particular hosts and does
pass out [keep state], block in.
Can it be that BPF isn't getting all the packets being sent?
Thanks!
dmesg of the box:
OpenBSD 4.6-current (GENERIC) #0: Tue Dec 22 02:36:59 EET 2009
[77/525]
cy...@openbox:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: Intel(R) Pentium(R) M processor 1600MHz ("GenuineIntel"
686-class) 1.60 GHz
cpu0:
FPU,V86,DE,PSE,TSC,MSR,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,TM,SBF,EST,TM2
real mem = 536244224 (511MB)
avail mem = 510955520 (487MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 08/30/06, BIOS32 rev. 0 @
0xf0000, SMBIOS rev. 2.3 @ 0xfa1ee (31 entries)
bios0: vendor Hewlett-Packard version "68BDD Ver. F.15" date 08/30/2006
bios0: Hewlett-Packard HP Compaq nc6000 (DJ256A#ABB)
apm at bios0 function 0x15 not configured
acpi0 at bios0: rev 0
acpi0: tables DSDT FACP SSDT
acpi0: wakeup devices C056(S5)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpiprt0 at acpi0: bus 1 (C045)
acpiprt1 at acpi0: bus 2 (C056)
acpiprt2 at acpi0: bus 0 (C044)
acpiec0 at acpi0
acpicpu0 at acpi0: C3, C2, C1, PSS
acpipwrres0 at acpi0: C16D
acpipwrres1 at acpi0: C13D
acpipwrres2 at acpi0: C184
acpipwrres3 at acpi0: C18B
acpipwrres4 at acpi0: C195
acpipwrres5 at acpi0: C0E6
acpipwrres6 at acpi0: C20B
acpipwrres7 at acpi0: C20C
acpipwrres8 at acpi0: C20D
acpipwrres9 at acpi0: C20E
acpitz0 at acpi0: critical temperature 103 degC
acpitz1 at acpi0: critical temperature 115 degC
acpitz2 at acpi0: critical temperature 103 degC
acpibat0 at acpi0: C137 model "Primary" serial 07280 2004/04/16 type
LIon oem "Hewlett-Packard"
acpibat1 at acpi0: C136 not present
acpiac0 at acpi0: AC unit online
acpibtn0 at acpi0: C139
acpibtn1 at acpi0: C138
acpivideo at acpi0 not configured
bios0: ROM list: 0xc0000/0x10000
cpu0 at mainbus0: (uniprocessor)
cpu0: Enhanced SpeedStep 1595 MHz: speeds: 1600, 1400, 1200, 1000, 800, 600 MHz
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82855PM Host" rev 0x03
intelagp0 at pchb0
agp0 at intelagp0: aperture at 0xb0000000, size 0x10000000
ppb0 at pci0 dev 1 function 0 "Intel 82855PM AGP" rev 0x03
pci1 at ppb0 bus 1
vga1 at pci1 dev 0 function 0 "ATI Radeon Mobility M10" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
radeondrm0 at vga1: irq 10
drm0 at radeondrm0
[25/525]
uhci0 at pci0 dev 29 function 0 "Intel 82801DB USB" rev 0x03: irq 10
uhci1 at pci0 dev 29 function 1 "Intel 82801DB USB" rev 0x03: irq 10
uhci2 at pci0 dev 29 function 2 "Intel 82801DB USB" rev 0x03: irq 10
ehci0 at pci0 dev 29 function 7 "Intel 82801DB USB" rev 0x03: irq 10
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1
ppb1 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0x83
pci2 at ppb1 bus 2
ath0 at pci2 dev 4 function 0 "Atheros AR5212" rev 0x01: irq 11
ath0: AR5213 5.6 phy 4.1 rf5111 1.7 rf2111 2.3, WOR0W, address 00:0b:cd:5b:e0:32
cbb0 at pci2 dev 6 function 0 "O2 Micro OZ711E0 CardBus" rev 0x00: irq 10
cbb1 at pci2 dev 6 function 1 "O2 Micro OZ711E0 CardBus" rev 0x00: irq 10
"O2 Micro OZ711Mx Misc" rev 0x00 at pci2 dev 6 function 2 not configured
cbb2 at pci2 dev 6 function 3 "O2 Micro OZ711E0 CardBus" rev 0x00: irq 10
bge0 at pci2 dev 14 function 0 "Broadcom BCM5705M Alt" rev 0x03,
BCM5705 A3 (0x3003): irq 11, address 00:14:38:1b:a7:61
brgphy0 at bge0 phy 1: BCM5705 10/100/1000baseT PHY, rev. 2
cardslot0 at cbb0 slot 0 flags 0
cardbus0 at cardslot0: bus 3 device 0 cacheline 0x0, lattimer 0x20
pcmcia0 at cardslot0
cardslot1 at cbb1 slot 1 flags 0
cardbus1 at cardslot1: bus 4 device 0 cacheline 0x0, lattimer 0x20
pcmcia1 at cardslot1
cardslot2 at cbb2 slot 2 flags 0
cardbus2 at cardslot2: bus 5 device 0 cacheline 0x0, lattimer 0x20
pcmcia2 at cardslot2
ichpcib0 at pci0 dev 31 function 0 "Intel 82801DBM LPC" rev 0x03
pciide0 at pci0 dev 31 function 1 "Intel 82801DBM IDE" rev 0x03: DMA,
channel 0 configured to compatibility, channel 1 configu
red to compatibility
wd0 at pciide0 channel 0 drive 0: <WDC WD2500BEVE-00WZT0>
wd0: 16-sector PIO, LBA48, 238475MB, 488397168 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 5
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <TOSHIBA, DVD-ROM SD-R2512, 1A04> ATAPI
5/cdrom removable
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2
auich0 at pci0 dev 31 function 5 "Intel 82801DB AC97" rev 0x03: irq
11, ICH4 AC97
ac97: codec id 0x41445374 (Analog Devices AD1981B)
ac97: codec features headphone, 20 bit DAC, No 3D Stereo
audio0 at auich0
"Intel 82801DB Modem" rev 0x03 at pci0 dev 31 function 6 not configured
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1
isa0 at ichpcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com2 at isa0 port 0x3e8/8 irq 5: ns16550a, 16 byte fifo
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
pckbc0: using irq 1 for kbd slot
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
midi0 at pcppi0: <PC speaker>
spkr0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
biomask e54d netmask ed4d ttymask ffff
mtrr: Pentium Pro MTRR support
com3 at pcmcia0 function 0 "Motorola, MPLUS-lite, 99999" port
0xa3f8/8: ns16550a, 16 byte fifo
com3: probed fifo depth: 0 bytes
ubt0 at uhub3 port 1 "ACTIONTEC Bluetooth by hp" rev 1.10/8.02 addr 2
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
root on wd0a swap on wd0b dump on wd0b
wsdisplay0: screen 6 added (80x25bf, vt100 emulation)
wsdisplay0: screen 7 added (80x25bf, vt100 emulation)
wsdisplay0: screen 8 added (80x25bf, vt100 emulation)
wsdisplay0: screen 9 added (80x50bf, vt100 emulation)
bge0: watchdog timeout -- resetting
