Wireshark mailing list archives
Re: take over responsibility of the pcap_pkthdr *
From: Guy Harris <guy () alum mit edu>
Date: Sun, 23 Jan 2011 17:13:11 -0800
On Jan 23, 2011, at 4:40 PM, Andrej van der Zee wrote:
Aha memory mapped between kernel and user-space, good.
Note that I said "might"; the platforms and interfaces where that happens are 1) regular network interfaces on reasonably recent Linuxes (I think the memory-mapped mechanism has been around for several years) and sufficiently recent libpcap (1.0.0 and later); 2) USB (not "USB network interfaces" - those are covered under "regular network interfaces" - but raw USB bus sniffing) on sufficiently recent Linuxes and sufficiently recent libpcap (1.1.0 and later; 1.0.0 USB capture support had a number of bugs); 3) regular network interfaces on, I think, FreeBSD 8.0 and later. On other platforms and other adapters, there's a copy from the kernel to userland. ___________________________________________________________________________ Sent via: Wireshark-users mailing list <wireshark-users () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-users Unsubscribe: https://wireshark.org/mailman/options/wireshark-users mailto:wireshark-users-request () wireshark org?subject=unsubscribe
Current thread:
- take over responsibility of the pcap_pkthdr * Andrej van der Zee (Jan 22)
- Re: take over responsibility of the pcap_pkthdr * Guy Harris (Jan 23)
- Re: take over responsibility of the pcap_pkthdr * Andrej van der Zee (Jan 23)
- Re: take over responsibility of the pcap_pkthdr * Guy Harris (Jan 23)
- Re: take over responsibility of the pcap_pkthdr * Andrej van der Zee (Jan 23)
- Re: take over responsibility of the pcap_pkthdr * Andrej van der Zee (Jan 23)
- Re: take over responsibility of the pcap_pkthdr * Guy Harris (Jan 23)