Date: Thu, 21 Feb 2002 00:28:39 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: sridharv@ufl.edu Cc: hackers@freebsd.org Subject: Re: interrupt priority question Message-ID: <3C74AFB7.FCDEE8A2@mindspring.com> References: <1014272387.3c74918386be5@webmail.health.ufl.edu>
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sridharv@ufl.edu wrote: > While i understand the mechanism of hardware interrupt priority, > I am curious to know how the priority levels are achieved/implemented > for software ( in particular the various layers of the TCP/IP stack.. > splxxx() ). Stevens Volume 2 is the canonical reference. Basically, the code runs at NETISR, which is a software interrupt which is ran at splx() time. Look at the source code for splx() to get a better idea. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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