Re: Libpcap reentrancy and PF_RING patch

[Guy Harris <guy () alum mit edu>]

Gregor Maier wrote:

> I'm afraid, but I think your patch has a race condition under (at least
> under Linux). In Linux two syscalls are required to read a packet.

Unless I'm misinterpreting socket(7), at least on Linux systems with the 
SO_TIMESTAMP socket option, you can set that option and use recvmsg() to 
read a packet; the control message for the packet will contain the time 
stamp.

Is that correct?  If so, in which version of the kernel did SO_TIMESTAMP 
first appear?
-
This is the tcpdump-workers list.
Visit https://cod.sandelman.ca/ to unsubscribe.