tcpdump mailing list archives
Re: Capturing in 32 bit guests
From: Romain Francoise <rfrancoise () debian org>
Date: Wed, 01 Feb 2012 21:54:08 +0100
Guy Harris <guy () alum mit edu> writes:
so the mmap interface should work between a 64-bit kernel and 32-bit userland *if* the kernel supports TPACKET_V2, as libpcap should choose TPACKET_V2 rather than TPACKET_V1 if TPACKET_V2 is supported. I'd need to know what version of the kernel is running on the system to determine whether TPACKET_V2 is supported or not (I don't know which kernel version first introduced it).
You need 2.6.27 to make it work (TPACKET_v2 + PACKET_RESERVE). -- Romain Francoise <rfrancoise () debian org> http://people.debian.org/~rfrancoise/ - This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
Current thread:
- Capturing in 32 bit guests Graeme Sheppard (Jan 31)
- Re: Capturing in 32 bit guests Guy Harris (Feb 01)
- Re: Capturing in 32 bit guests Guy Harris (Feb 01)
- Re: Capturing in 32 bit guests Michael Richardson (Feb 01)
- Re: Capturing in 32 bit guests Guy Harris (Feb 01)
- Re: Capturing in 32 bit guests Guy Harris (Feb 01)
- Re: Capturing in 32 bit guests Romain Francoise (Feb 02)
- Re: Capturing in 32 bit guests Guy Harris (Feb 01)