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Date:      Wed, 5 Nov 2003 02:50:24 -0800 (PST)
From:      Vlad Manilici <vman@tmok.com>
To:        freebsd-bugs@FreeBSD.org
Subject:   Re: kern/58927: Verification of reverse path in ip_fw2.c causes problems
Message-ID:  <200311051050.hA5AoOL2071518@freefall.freebsd.org>

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The following reply was made to PR kern/58927; it has been noted by GNATS.

From: Vlad Manilici <vman@tmok.com>
To: freebsd-gnats-submit@FreeBSD.org
Cc:  
Subject: Re: kern/58927: Verification of reverse path in ip_fw2.c causes problems
Date: Wed, 5 Nov 2003 05:39:45 -0500

 Hi,
 
 It seems that not the reverse path check is the problem, but the
 kernel. Disabling thins check, and testing with "normal" traffic
 (i.e., same direct and reverse path) brings nothing. I should't
 have blamed my ISP and this check so quick :). He still has the
 same IP on 2 different MACs on his Cisco, s.t. I send to one of
 them (as configured in ARP) and receive from the other. But this
 strange stuff is a digression :-).
 
 Again, my NIC card (3Com 905c-tx) accepts traffic destined to it
 only when in promiscuous mode. I use the nr. 1 fix. The 2.nd is
 false.
 
 When I boot my old 4.7 partition, I am able to use the card as
 normal. Thus, I strongly suspect the 5.1 kernel...
 
 Also note that 5.1 actually did function on my system correctly.
 After this problem first occured, I bought another NIC of the same
 type (3C905C-TX), and changed it. The problem persists. Might
 there be something wrong with the PCI controller/motherboard?
 
 Still, shouldn't the kernel properly detect deffective hardware?
 
 As a reference, my boot messages:
 
 Copyright (c) 1992-2003 The FreeBSD Project.
 Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
 	The Regents of the University of California. All rights reserved.
 FreeBSD 5.1-RELEASE-p10 #12: Wed Nov  5 11:25:18 CET 2003
     root@:/usr/obj/usr/src/sys/K2
 Preloaded elf kernel "/boot/kernel/kernel" at 0xc04e9000.
 Preloaded elf module "/boot/kernel/acpi.ko" at 0xc04e921c.
 Timecounter "i8254"  frequency 1193182 Hz
 Timecounter "TSC"  frequency 999723311 Hz
 CPU: AMD Athlon(tm) Processor (999.72-MHz 686-class CPU)
   Origin = "AuthenticAMD"  Id = 0x642  Stepping = 2
   Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
   AMD Features=0xc0440000<RSVD,AMIE,DSP,3DNow!>
 real memory  = 268353536 (255 MB)
 avail memory = 255213568 (243 MB)
 Pentium Pro MTRR support enabled
 npx0: <math processor> on motherboard
 npx0: INT 16 interface
 acpi0: <ASUS   A7V     > on motherboard
 pcibios: BIOS version 2.10
 Using $PIR table, 9 entries at 0xc00f1720
 acpi0: power button is handled as a fixed feature programming model.
 Timecounter "ACPI-fast"  frequency 3579545 Hz
 acpi_timer0: <24-bit timer at 3.579545MHz> port 0xe408-0xe40b on acpi0
 acpi_cpu0: <CPU> on acpi0
 acpi_button0: <Power Button> on acpi0
 pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
 pci0: <ACPI PCI bus> on pcib0
 agp0: <VIA 82C8363 (Apollo KT133A) host to PCI bridge> mem 0xe4000000-0xe7ffffff at device 0.0 on pci0
 pcib1: <PCI-PCI bridge> at device 1.0 on pci0
 pci1: <PCI bus> on pcib1
 pci1: <display, VGA> at device 0.0 (no driver attached)
 isab0: <PCI-ISA bridge> at device 4.0 on pci0
 isa0: <ISA bus> on isab0
 atapci0: <VIA 82C686A UDMA66 controller> port 0xd800-0xd80f at device 4.1 on pci0
 ata0: at 0x1f0 irq 14 on atapci0
 ata1: at 0x170 irq 15 on atapci0
 uhci0: <VIA 83C572 USB controller> port 0xd400-0xd41f irq 9 at device 4.2 on pci0
 usb0: <VIA 83C572 USB controller> on uhci0
 usb0: USB revision 1.0
 uhub0: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
 uhub0: 2 ports with 2 removable, self powered
 ums0: Logitech USB Mouse, rev 1.10/6.20, addr 2, iclass 3/1
 ums0: 4 buttons and Z dir.
 uhci1: <VIA 83C572 USB controller> port 0xd000-0xd01f irq 9 at device 4.3 on pci0
 usb1: <VIA 83C572 USB controller> on uhci1
 usb1: USB revision 1.0
 uhub1: VIA UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
 uhub1: 2 ports with 2 removable, self powered
 uhub1: port error, restarting port 1
 uhub1: port error, giving up port 1
 ulpt0: Hewlett-Packard DeskJet 845C, rev 1.10/1.00, addr 2, iclass 7/1
 ulpt0: using bi-directional mode
 uhub2: ALCOR Generic USB Hub, class 9/0, rev 1.10/1.00, addr 3
 uhub2: 4 ports with 4 removable, self powered
 pcm0: <Creative CT5880-C> port 0xa400-0xa43f irq 9 at device 9.0 on pci0
 pcm0: <TriTech TR28602 AC97 Codec>
 xl0: <3Com 3c905C-TX Fast Etherlink XL> port 0xa000-0xa07f mem 0xde800000-0xde80007f irq 5 at device 10.0 on pci0
 xl0: Ethernet address: 00:04:75:f8:d6:4a
 miibus0: <MII bus> on xl0
 ukphy0: <Generic IEEE 802.3u media interface> on miibus0
 ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
 bktr0: <BrookTree 878> mem 0xe1000000-0xe1000fff irq 9 at device 13.0 on pci0
 bktr0: Hauppauge Model 44804 C148
 bktr0: Warning - Unknown Hauppauge Tuner 0x30
 bktr0: Hauppauge WinCast/TV, Philips PAL I tuner.
 pci0: <multimedia> at device 13.1 (no driver attached)
 atapci1: <Promise PDC20265 UDMA100 controller> port 0x8400-0x843f,0x8800-0x8803,0x9000-0x9007,0x9400-0x9403,0x9800-0x9807 mem 0xde000000-0xde01ffff irq 10 at device 17.0 on pci0
 ata2: at 0x9800 on atapci1
 ata3: at 0x9000 on atapci1
 fdc0: <Enhanced floppy controller (i82077, NE72065 or clone)> port 0x3f7,0x3f2-0x3f5 irq 6 drq 2 on acpi0
 fdc0: FIFO enabled, 8 bytes threshold
 fd0: <1440-KB 3.5" drive> on fdc0 drive 0
 ppc0 port 0x778-0x77b,0x378-0x37f irq 7 drq 3 on acpi0
 ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
 ppc0: FIFO with 16/16/8 bytes threshold
 ppbus0: <Parallel port bus> on ppc0
 sio0 port 0x3f8-0x3ff irq 4 on acpi0
 sio0: type 16550A
 sio1 port 0x2f8-0x2ff irq 3 on acpi0
 sio1: type 16550A
 atkbdc0: <Keyboard controller (i8042)> port 0x64,0x60 irq 1 on acpi0
 atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
 kbd0 at atkbd0
 orm0: <Option ROMs> at iomem 0xd4000-0xd47ff,0xd0000-0xd1fff,0xcc000-0xcffff,0xc0000-0xc9fff on isa0
 sc0: <System console> at flags 0x100 on isa0
 sc0: VGA <10 virtual consoles, flags=0x300>
 vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
 Timecounters tick every 10.000 msec
 ipfw2 initialized, divert disabled, rule-based forwarding enabled, default to deny, logging unlimited
 acpi_cpu: throttling enabled, 16 steps (100% to 6.2%), currently 100.0%
 ad4: 78167MB <Maxtor 6Y080P0> [158816/16/63] at ata2-master UDMA100
 ad5: 28629MB <ST330620A> [58168/16/63] at ata2-slave UDMA100
 acd0: DVD-ROM <Memorex DVD-MAXX 1648 AJ> at ata1-master PIO4
 acd1: CD-RW <CD-R/RW RW7120A> at ata1-slave PIO4
 Mounting root from ufs:/dev/ad4s3a
 xl0: promiscuous mode enabled
 
 And my kernel configuration file:
 
 # $Id: K2,v 1.7 2003/11/05 10:19:00 root Exp $
 
 machine			i386
 cpu				I686_CPU
 ident			K2
 
 # Debugging for use in -current
 #makeoptions		DEBUG=-g		#Build kernel with gdb(1) debug symbols
 #options 		DDB				#Enable the kernel debugger
 #options 		INVARIANTS		#Enable calls of extra sanity checking
 options 		INVARIANT_SUPPORT#Extra sanity checks of internal structures, required by INVARIANTS
 #options 		WITNESS			#Enable checks to detect deadlocks and cycles
 #options 		WITNESS_SKIPSPIN#Don't run witness on spinlocks for speed
 
 options 		SCHED_4BSD		#4BSD scheduler
 options 		INET			#InterNETworking
 #options 		INET6			#IPv6 communications protocols
 options 		FFS				#Berkeley Fast Filesystem
 options 		SOFTUPDATES		#Enable FFS soft updates support
 options 		UFS_ACL			#Support for access control lists
 options 		UFS_DIRHASH		#Improve performance on big directories
 options 		NFSCLIENT		#Network Filesystem Client
 options 		NFSSERVER		#Network Filesystem Server
 options 		MSDOSFS			#MSDOS Filesystem
 options 		CD9660			#ISO 9660 Filesystem
 options			EXT2FS			#Linux ext2. No module?
 options 		PROCFS			#Process filesystem
 options 		PSEUDOFS		#Pseudo-filesystem framework
 options 		COMPAT_43		#Compatible with BSD 4.3 [KEEP THIS!]
 options 		COMPAT_FREEBSD4	#Compatible with FreeBSD4
 options 		KTRACE			#ktrace(1) support
 options 		SYSVSHM			#SYSV-style shared memory
 options 		SYSVMSG			#SYSV-style message queues
 options 		SYSVSEM			#SYSV-style semaphores
 options 		_KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
 options 		KBD_INSTALL_CDEV#install a CDEV entry in /dev
 
 # Enable Linux ABI emulation
 options         COMPAT_LINUX
 
 device			isa
 device			pci
 
 device			ata
 device			atadisk			# ATA disk drives
 device			atapicd			# ATAPI CDROM drives
 options 		ATA_STATIC_ID	#Static device numbering
 device			fdc			# Floppy drives
 
 # atkbdc0 controls both the keyboard and the PS/2 mouse
 device			atkbdc			# AT keyboard controller
 device			atkbd			# AT keyboard
 #device			psm				# PS/2 mouse
 device			vga				# VGA video card driver
 device			splash			# Splash screen and screen saver support
 
 # syscons is the default console driver, resembling an SCO console
 device			sc
 options 		MAXCONS=10		# number of virtual consoles
 options 		SC_HISTORY_SIZE=1000	# number of history buffer lines
 options 		SC_NORM_ATTR="(FG_GREEN|BG_BLACK)"
 options 		SC_NORM_REV_ATTR="(FG_BLACK|BG_GREEN)"
 options 		SC_KERNEL_CONS_ATTR="(FG_RED|BG_BLACK)"
 options 		SC_KERNEL_CONS_REV_ATTR="(FG_BLACK|BG_RED)"
 
 # sound
 device			pcm
 
 # Floating point support - do not disable.
 device			npx
 
 # Serial (COM) ports
 device			sio				# 8250, 16[45]50 based serial ports
 
 # Parallel port
 device			ppc
 device			ppbus			# Parallel port bus (required)
 
 # Ether
 device			miibus			# MII bus support
 device			xl				# 3Com 3c90x (``Boomerang'', ``Cyclone'')
 
 # Pseudo devices - the number indicates how many units to allocate.
 device			random			# Entropy device
 device			loop			# Network loopback
 device			ether			# Ethernet support
 device			ppp				# Kernel PPP
 device			tun				# Packet tunnel.
 device			pty				# Pseudo-ttys (telnet etc)
 device			bpf				# Berkeley packet filter
 device			md				# Memory/malloc disk
 device			agp				# AGP GART support
 
 # usb
 device			uhci			# UHCI PCI->USB interface
 device			usb				# USB Bus (required)
 #device			uvisor			# USB Palms
 #device			ucom			# USB to com
 device			ugen			# Generic
 device			ums				# Mouse
 device			ulpt			# Printer
 
 # umass
 device			scbus			# SCSI bus (required)
 device			da				# Direct Access (disks)
 device			umass			# Disks/Mass storage - Requires scbus and da
 device			pass			# Passthrough device (direct SCSI access)
 
 # firewall
 options			IPFIREWALL		# firewall
 options			IPFIREWALL_VERBOSE #enable logging to syslogd(8)
 
 # bktr
 device			smbus
 device			iicbus
 device			iicbb
 device			bktr			# Hauppauge WinTV Card
 options			BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
 options			BKTR_GPIO_ACCESS
 
 I'd be grateful for any help :)
 
 Cheers,
 Vlad
 
 ................................................................................
     Vlad Manilici                               vman@tmok.com



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