Re: cvs commit: src/sys/net if.c netisr.c netisr.h src/sys/netin
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On Wednesday, 19. January 2005 18:30, Matthew Dillon wrote:
> The two solutions are to either ref-count the network interface on a
> per-packet basis or to synchronize against consumers of the packet.
> ref-counting is very expensive in an MP system so we have chosen to
> synchronize against consumers by sending a NOP message to all protocol
> processing threads and waiting for it to be replied. This only occurs
> when an interface is being brought down and is not expected to introduce
> any performance issues.
this is really great! i mean, the simplicity is overwhelming... this messag=
ing=20
framework really pays off :)
cheers
simon
=2D-=20
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