Date: Fri, 6 Jun 2003 08:51:30 +0200 From: Vincent Jardin <vjardin@wanadoo.fr> To: Julian Elischer <julian@elischer.org>, Michael Shiu <mshiu@net-yan.com> Cc: freebsd-net@freebsd.org Subject: Re: Does Netgraph in FBSD 5.x SMP requires GIANT lock? Message-ID: <200306060851.30777.vjardin@wanadoo.fr> In-Reply-To: <Pine.BSF.4.21.0306052329210.80038-100000@InterJet.elischer.org> References: <Pine.BSF.4.21.0306052329210.80038-100000@InterJet.elischer.org>
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> > it should not require Giant. > However there are some locking 'holes' that come when locked resources > are accessed by external code that is executed from other contexts.. > e.g. many drivers do not know about the locks in their netgraph half, > and just 'do' what they want. Also there are instances of callout > (timeout) code doing things to a node without getting teh node's lock. > What's about ng_l2tp ? The BSD's callout functions are used instead of the Netgraph's=20 ng_[un]timeout functions.=20 Vincent
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