Date: Tue, 8 Jun 2004 10:02:36 +0300 From: Ruslan Ermilov <ru@FreeBSD.org> To: Gleb Smirnoff <glebius@cell.sick.ru> Cc: FreeBSD current users <current@FreeBSD.org> Subject: Re: HEADSUP! netgraph Metadata changing. Message-ID: <20040608070236.GA57053@ip.net.ua> In-Reply-To: <20040608065831.GC26822@cell.sick.ru> References: <20040607071701.GC17986@cell.sick.ru> <Pine.BSF.4.21.0406070034350.19288-100000@InterJet.elischer.org> <20040607074037.GB18232@cell.sick.ru> <20040608065235.GA56799@ip.net.ua> <20040608065831.GC26822@cell.sick.ru>
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--zhXaljGHf11kAtnf Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jun 08, 2004 at 10:58:31AM +0400, Gleb Smirnoff wrote: > On Tue, Jun 08, 2004 at 09:52:35AM +0300, Ruslan Ermilov wrote: > R> > J> > J> In addition the ng_ksocket node adds info into metadata and = I suspect > R> > J> > J> there are people using that. > R> > J> >=20 > R> > J> > Since ng_ksocket tags packets for itself only, we can safely ch= ange it. > R> > J>=20 > R> > J> Since I did not add that code I am not very familiar with it or w= ho uses > R> > J> it. (or why) > R> > J>=20 > R> > J> if this is true than yes we can do this.. > R> >=20 > R> > It is used only on UDP connection, to send replies back to where the= original > R> > packets came from. > R> >=20 > R> I wouldn't hardcode it this way. Rather, it just mimics the > R> sendto()/recvfrom() semantics, to represent the "to"/"from" > R> arguments, respectively. >=20 > Pardon, haven't understand what do you suggest. You mean, that it'll be b= etter > if node originating packets will insert this tag? >=20 It's not just used "to send replies back". In our proprietary module, we expect the connected node to be of a type "inet/dgram/udp ksocket", and insert tags appropriately to send datagrams to a correct router. We also read tags to verify that the datagrams are coming from the correct router. And it just mimics the sendto()/recvfrom() behavior. Cheers, --=20 Ruslan Ermilov ru@FreeBSD.org FreeBSD committer --zhXaljGHf11kAtnf Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFAxWSMqRfpzJluFF4RAkekAJ97yi0KbkzFeTJmD7l5mmvUXq7CNgCglEMW +096yFXJsnZxagmcpOv32qo= =85Md -----END PGP SIGNATURE----- --zhXaljGHf11kAtnf--
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