Date: Thu, 20 Jun 2002 15:58:10 -0700 (PDT) From: Julian Elischer <julian@elischer.org> To: Luigi Rizzo <luigi@FreeBSD.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/sys mbuf.h Message-ID: <Pine.BSF.4.21.0206201556510.32100-100000@InterJet.elischer.org> In-Reply-To: <200206202129.g5KLTu577564@freefall.freebsd.org>
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Re: MFC.. I presume that this method will not explode binary drivers.. (i.e. alll normal data appears in the normal places in outgoing packets) On Thu, 20 Jun 2002, Luigi Rizzo wrote: > luigi 2002/06/20 14:29:56 PDT > > Modified files: > sys/sys mbuf.h > Log: > Add some #define's for mbuf annotations. > > As the comment in the code says, eventually there will be a proper > data structure (e.g NetBSD's struct m_tag) to store chains of > annotations, and mbuf-handling procedures will handle these chains > in the correct way. > > Right now, these chains do not exist, and we just use the constants > defined here to implement simple ad-hoc solutions to remove some global > variables used so far to pass around informations about packets > being processed. > > Global variables are not only ugly and make the code unreadable, they > also prevent from using parallelism in network stack processing. > > (the 3-days MFC only refers to this commit, i.e. the PACKET_TAG_* > constants; the full mechanism will be committed and MFC'ed on a > longer timescale). > > MFC after: 3 days > > Revision Changes Path > 1.91 +48 -0 src/sys/sys/mbuf.h > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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