Date: 10 Sep 2000 21:42:07 -0000 From: venglin@ismedia.pl To: FreeBSD-gnats-submit@freebsd.org Subject: kern/21176: Malformed packets on fxp driver Message-ID: <20000910214207.7196.qmail@yeti.ismedia.pl>
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>Number: 21176
>Category: kern
>Synopsis: Malformed packets on fxp driver
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Sep 10 14:50:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator: Przemyslaw Frasunek
>Release: FreeBSD 4.1-STABLE i386
>Organization:
ISMEDiA
>Environment:
FreeBSD yeti.ismedia.pl 4.1-STABLE FreeBSD 4.1-STABLE #0: Sun Sep 10 22:09:16 CEST 2000 root@yeti.ismedia.pl:/usr/src/sys/compile/YETI i386
Cvsuped from 5.0-CURRENT.
Kernel configuration:
machine i386
cpu I686_CPU
ident YETI
maxusers 128
options INET
options INET6
options FFS
options FFS_ROOT
options QUOTA
options SOFTUPDATES
options NFS
options CD9660
options COMPAT_43
options USERCONFIG
options VISUAL_USERCONFIG
options SYSVSHM
options SYSVMSG
options SYSVSEM
options ICMP_BANDLIM
options IPFIREWALL
options IPDIVERT
device isa
device pci
device fdc0 at isa? port IO_FD1 irq 6 drq 2
device fd0 at fdc0 drive 0
device ata
device atadisk
device atapicd
options ATA_STATIC_ID
options ATA_ENABLE_ATAPI_DMA
device ata0 at isa? port IO_WD1 irq 14
device ata1 at isa? port IO_WD2 irq 15
device atkbdc0 at isa? port IO_KBD
device atkbd0 at atkbdc? irq 1 flags 0x1
device psm0 at atkbdc? irq 12
device vga0 at isa?
device sc0 at isa? flags 0x100
device npx0 at nexus? port IO_NPX irq 13
device fxp
pseudo-device loop
pseudo-device ether
pseudo-device pty
pseudo-device snp 4
pseudo-device gif 32
pseudo-device bpf
Interfaces:
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet 212.182.117.178 netmask 0xfffffff8 broadcast 212.182.117.183
inet6 fe80::290:27ff:fea3:f128%fxp0 prefixlen 64 scopeid 0x1
ether 00:90:27:a3:f1:28
media: autoselect (100baseTX <full-duplex>) status: active
supported media: autoselect 100baseTX <full-duplex> 100baseTX 10baseT/UTP <full-duplex> 10baseT/UTP
fxp1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
inet6 fe80::290:27ff:fea3:f100%fxp1 prefixlen 64 scopeid 0x2
inet 10.10.11.1 netmask 0xffffff00 broadcast 10.10.11.255
ether 00:90:27:a3:f1:00
media: autoselect (100baseTX <full-duplex>) status: active
supported media: autoselect 100baseTX <full-duplex> 100baseTX 10baseT/UTP <full-duplex> 10baseT/UTP
gif0: flags=8011<UP,POINTOPOINT,MULTICAST> mtu 1280
inet6 fe80::290:27ff:fea3:f128%gif0 --> :: prefixlen 64 scopeid 0x3
inet6 3ffe:8010:5d::2 --> 3ffe:8010:5d::1 prefixlen 128
inet6 3ffe:8010:5d::8 --> 3ffe:8010:5d::1 prefixlen 128
inet6 3ffe:8010:5d::9 --> 3ffe:8010:5d::1 prefixlen 128
inet6 3ffe:8010:5d::a --> 3ffe:8010:5d::1 prefixlen 128
gif1: flags=8011<UP,POINTOPOINT,MULTICAST> mtu 1280
inet6 fe80::290:27ff:fea3:f128%gif1 --> :: prefixlen 64 scopeid 0x4
inet6 3ffe:8010:5d::2:0:1 --> 3ffe:8010:5d::2:0:2 prefixlen 128
gif2: flags=8011<UP,POINTOPOINT,MULTICAST> mtu 1280
inet6 fe80::290:27ff:fea3:f128%gif2 --> :: prefixlen 64 scopeid 0x5
inet6 3ffe:8010:5d::8:0:1 --> 3ffe:8010:5d::8:0:2 prefixlen 128
gif3: flags=8011<UP,POINTOPOINT,MULTICAST> mtu 1280
inet6 fe80::290:27ff:fea3:f128%gif3 --> :: prefixlen 64 scopeid 0x6
inet6 3ffe:8010:5d::3:0:1 --> 3ffe:8010:5d::3:0:2 prefixlen 128
gif4: flags=8011<UP,POINTOPOINT,MULTICAST> mtu 1280
inet6 fe80::290:27ff:fea3:f128%gif4 --> :: prefixlen 64 scopeid 0x7
inet6 3ffe:8010:5d::4:0:1 --> 3ffe:8010:5d::4:0:2 prefixlen 128
gif5: flags=8011<UP,POINTOPOINT,MULTICAST> mtu 1280
inet6 fe80::290:27ff:fea3:f128%gif5 --> :: prefixlen 64 scopeid 0x8
inet6 3ffe:8010:5d::5:0:1 --> 3ffe:8010:5d::5:0:2 prefixlen 128
gif6: flags=8011<UP,POINTOPOINT,MULTICAST> mtu 1280
inet6 fe80::290:27ff:fea3:f128%gif6 --> :: prefixlen 64 scopeid 0x9
inet6 3ffe:8010:5d::6:0:1 --> 3ffe:8010:5d::6:0:2 prefixlen 128
gif7: flags=8011<UP,POINTOPOINT,MULTICAST> mtu 1280
inet6 fe80::290:27ff:fea3:f128%gif7 --> :: prefixlen 64 scopeid 0xa
inet6 3ffe:8010:5d::7:0:1 --> 3ffe:8010:5d::7:0:2 prefixlen 128
gif8: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif9: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif10: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif11: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif12: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif13: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif14: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif15: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif16: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif17: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif18: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif19: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif20: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif21: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif22: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif23: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif24: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif25: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif26: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif27: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif28: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif29: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif30: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
gif31: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x23
inet6 ::1 prefixlen 128
inet 127.0.0.1 netmask 0xff000000
>Description:
Packets coming from fxp1 interface are malformed:
23:22:13.931265 0:90:27:a3:f1:0 ff:ff:ff:ff:ff:ff 0800 98: 10.10.11.1 > 10.10.11.255: icmp: echo request
4500 0054 7470 0000 ff01 1c25 0a0a 0b01
0a0a 0bff 0800 6e7b 7616 3500 85fb bb39
a435 0e00 0809 0a0b 0c0d 0e0f 1011 1213
1415 1617 1819 1a1b 1c1d 1e1f 2021 2223
2425 2627 2829 2a2b 2c2d 2e2f 3031 3233
3435
23:22:14.941266 ff:ff:ff:ff:0:90 2:0:0:0:ff:ff 27a3 102:
f100 0800 4500 0054 747f 0000 ff01 1c16
0a0a 0b01 0a0a 0bff 0800 5654 7616 3600
86fb bb39 ba5c 0e00 0809 0a0b 0c0d 0e0f
1011 1213 1415 1617 1819 1a1b 1c1d 1e1f
2021 2223 2425 2627 2829 2a2b 2c2d 2e2f
3031
Received packet is padded with 4 bytes (0xff) on the beginning. It is not
a hardware failure. Everything worked on 5.0-CURRENT.
Packets from fxp0 are good.
>How-To-Repeat:
Send some packets to broadcast address on second fxp NIC. Catch
responses with tcpdump -x.
>Fix:
Unknown.
>Release-Note:
>Audit-Trail:
>Unformatted:
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