Date: Fri, 18 May 2012 19:03:17 -0400 From: Arnaud Lacombe <lacombar@gmail.com> To: FreeBSD Net <freebsd-net@freebsd.org> Cc: Jack Vogel <jfv@freebsd.org> Subject: Multiple em(4) not working with qemu Message-ID: <CACqU3MUtmmT8G6286K9_2ktmciXRvP%2BAo3%2Bk1%2BXLnJN4bAVedQ@mail.gmail.com>
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Hi,
It would seem that FreeBSD[0] is unable to deal correctly with qemu's
networking when *more* than one e1000 interface is exported.
Interfaces are identified as:
# qemu -nographic -hda /vm/hdd-freebsd-i386 \
-net nic -net tap,script=/vm/ifup \
-net nic -net tap,script=/vm/ifup \
-net nic -net tap,script=/vm/ifup \
-net nic -net tap,script=/vm/ifup \
-net nic -net tap,script=/vm/ifup \
-net nic -net tap,script=/vm/ifup
Copyright (c) 1992-2012 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 is a registered trademark of The FreeBSD Foundation.
FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:15:25 UTC 2012
root@obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC i386
CPU: QEMU Virtual CPU version 0.14.50 (2660.53-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x633 Family = 6 Model = 3 Stepping = 3
Features=0x781abf9<FPU,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,PGE,CMOV,PAT,MMX,FXSR,SSE,SSE2>
Features2=0x80800001<SSE3,POPCNT,HV>
real memory = 134205440 (127 MB)
avail memory = 112107520 (106 MB)
[...]
em0: <Intel(R) PRO/1000 Legacy Network Connection 1.0.3> port
0xc040-0xc07f mem 0xf2020000-0xf203ffff irq 11 at device 3.0 on pci0
em0: Memory Access and/or Bus Master bits were not set!
em0: Ethernet address: 52:54:00:12:34:56
[...]
em5: <Intel(R) PRO/1000 Legacy Network Connection 1.0.3> port
0xc180-0xc1bf mem 0xf2160000-0xf217ffff irq 11 at device 8.0 on pci0
em5: Memory Access and/or Bus Master bits were not set!
em5: Ethernet address: 52:54:00:12:34:5b
[...]
# ifconfig em0 10.0.255.2
# ping 10.0.255.1
PING 10.0.255.1 (10.0.255.1): 56 data bytes
ping: sendto: Host is down
ping: sendto: Host is down
ping: sendto: Host is down
TX works , but RX seems broken. re(4) in the exact same configuration
works fine.
any ideas ?
Thanks,
- Arnaud
ps: latest qemu shows the same behavior.
[0]: at least FreeBSD 7.1 base + lem(4) v 1.0.3, confirmed on FreeBSD
9.0-RELEASE
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