Date: Tue, 19 Nov 2013 15:45:31 +0400 From: Gleb Smirnoff <glebius@FreeBSD.org> To: Steve Kiernan <stevek@juniper.net> Cc: freebsd-net@freebsd.org, luigi@freebsd.org, Marcel Moolenaar <marcel@freebsd.org>, zec@freebsd.org, Marcel Moolenaar <marcel@xcllnt.net> Subject: Re: [JNPR] Network stack as a module (RFC) Message-ID: <20131119114531.GF7577@glebius.int.ru> In-Reply-To: <20131118143508.0253e663@stevek-ubuntu> References: <CC6EF6B2.1917A%anshukla@juniper.net> <f1d8693fa83965f0d4a485a2db7e603b@novexsolutions.com> <50F868FF.5060506@networx.ch> <20131115165210.23f82578@stevek-ubuntu> <20131116084919.GF7577@glebius.int.ru> <1DAF9090-08DA-404B-B86B-57E5D124D70D@xcllnt.net> <20131118164149.GV7577@glebius.int.ru> <20131118143508.0253e663@stevek-ubuntu>
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Steve, On Mon, Nov 18, 2013 at 02:35:08PM -0500, Steve Kiernan wrote: S> > Have you measured the performance impact on the loadable stack? I S> > suppose many functions, that are now called directly, with loadable S> > stack will be called via functon pointers. S> S> No, only a small number of functions were needed to be methods in a S> netstack kobj in the current implementation that we have. And some of S> those may need to change, as they revolve around NFS exports. S> S> Currently, we have four (4) methods that are needed: S> socreate S> vfs_export S> vfs_setpublicfs S> vfs_stdcheckexp S> S> When one is not dealing with NFS exports, only the socreate method is S> of interest. It is called just before mac_socket_create() would be S> called in socreate(). Sounds okay. Thank you. S> See http://people.freebsd.org/~marcel/Juniper/netstack-v2.diff, which S> is the full patch set that had been previously sent out. Some things S> have changed a bit since then, but if you look for curnetstack usage S> in the patch, you should be able to see the places where netsack S> methods are called. The patch is quite huge to understand it as a whole. :) -- Totus tuus, Glebius.
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