Date: Sat, 1 Oct 2022 12:45:56 -0400 From: Shawn Webb <shawn.webb@hardenedbsd.org> To: "Alexander V. Chernikov" <melifaro@ipfw.ru> Cc: "src-committers@freebsd.org" <src-committers@FreeBSD.org>, "dev-commits-src-all@freebsd.org" <dev-commits-src-all@FreeBSD.org>, "dev-commits-src-main@freebsd.org" <dev-commits-src-main@FreeBSD.org> Subject: Re: git: 7e5bf68495cc - main - netlink: add netlink support Message-ID: <20221001164556.guh2gu6umjvehq3r@mutt-hbsd> In-Reply-To: <3A024E22-7FA8-4465-88EB-7DC7B1320095@ipfw.ru> References: <202210011419.291EJ3aa000309@gitrepo.freebsd.org> <20221001163510.gkvfycmi224ei5ok@mutt-hbsd> <3A024E22-7FA8-4465-88EB-7DC7B1320095@ipfw.ru>
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--iwomfqhvgfyzurjf Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Oct 01, 2022 at 05:40:05PM +0100, Alexander V. Chernikov wrote: >=20 > > On 1 Oct 2022, at 17:35, Shawn Webb <shawn.webb@hardenedbsd.org> wrote: > >=20 > > On Sat, Oct 01, 2022 at 02:19:03PM +0000, Alexander V. Chernikov wrote: > >> The branch main has been updated by melifaro: > >>=20 > >> URL: https://cgit.FreeBSD.org/src/commit/?id=3D7e5bf68495cc0a8c9793a33= 8a8a02009a7f6dbb6 > >>=20 > >> commit 7e5bf68495cc0a8c9793a338a8a02009a7f6dbb6 > >> Author: Alexander V. Chernikov <melifaro@FreeBSD.org> > >> AuthorDate: 2022-01-20 21:39:21 +0000 > >> Commit: Alexander V. Chernikov <melifaro@FreeBSD.org> > >> CommitDate: 2022-10-01 14:15:35 +0000 > >>=20 > >> netlink: add netlink support > >>=20 > >> Netlinks is a communication protocol currently used in Linux kernel = to modify, > >> read and subscribe for nearly all networking state. Interfaces, add= resses, routes, > >> firewall, fibs, vnets, etc are controlled via netlink. > >> It is async, TLV-based protocol, providing 1-1 and 1-many communicat= ions. > >>=20 > >> The current implementation supports the subset of NETLINK_ROUTE > >> family. To be more specific, the following is supported: > >> * Dumps: > >> - routes > >> - nexthops / nexthop groups > >> - interfaces > >> - interface addresses > >> - neighbors (arp/ndp) > >> * Notifications: > >> - interface arrival/departure > >> - interface address arrival/departure > >> - route addition/deletion > >> * Modifications: > >> - adding/deleting routes > >> - adding/deleting nexthops/nexthops groups > >> - adding/deleting neghbors > >> - adding/deleting interfaces (basic support only) > >> * Rtsock interaction > >> - route events are bridged both ways > >>=20 > >> The implementation also supports the NETLINK_GENERIC family framewor= k. > >>=20 > >> Implementation notes: > >> Netlink is implemented via loadable/unloadable kernel module, > >> not touching many kernel parts. > >> Each netlink socket uses dedicated taskqueue to support async operat= ions > >> that can sleep, such as interface creation. All message processing = is > >> performed within these taskqueues. > >>=20 > >> Compatibility: > >> Most of the Netlink data models specified above maps to FreeBSD conc= epts > >> nicely. Unmodified ip(8) binary correctly works with > >> interfaces, addresses, routes, nexthops and nexthop groups. Some > >> software such as net/bird require header-only modifications to compi= le > >> and work with FreeBSD netlink. > >>=20 > >> Reviewed by: imp > >> Differential Revision: https://reviews.freebsd.org/D36002 > >> MFC after: 2 months > >> --- > >> etc/mtree/BSD.include.dist | 4 + > >> sys/modules/Makefile | 1 + > >> sys/modules/netlink/Makefile | 17 + > >> sys/net/route.c | 11 + > >> sys/net/route/route_ctl.h | 7 + > >> sys/net/rtsock.c | 42 ++ > >> sys/netlink/netlink.h | 257 +++++++++ > >> sys/netlink/netlink_ctl.h | 102 ++++ > >> sys/netlink/netlink_debug.h | 82 +++ > >> sys/netlink/netlink_domain.c | 689 +++++++++++++++++++++++ > >> sys/netlink/netlink_generic.c | 472 ++++++++++++++++ > >> sys/netlink/netlink_generic.h | 112 ++++ > >> sys/netlink/netlink_io.c | 528 ++++++++++++++++++ > >> sys/netlink/netlink_linux.h | 54 ++ > >> sys/netlink/netlink_message_parser.c | 472 ++++++++++++++++ > >> sys/netlink/netlink_message_parser.h | 270 +++++++++ > >> sys/netlink/netlink_message_writer.c | 686 +++++++++++++++++++++++ > >> sys/netlink/netlink_message_writer.h | 250 +++++++++ > >> sys/netlink/netlink_module.c | 228 ++++++++ > >> sys/netlink/netlink_route.c | 135 +++++ > >> sys/netlink/netlink_route.h | 43 ++ > >> sys/netlink/netlink_var.h | 142 +++++ > >> sys/netlink/route/common.h | 213 ++++++++ > >> sys/netlink/route/iface.c | 857 ++++++++++++++++++++++++++= +++ > >> sys/netlink/route/iface_drivers.c | 165 ++++++ > >> sys/netlink/route/ifaddrs.h | 90 +++ > >> sys/netlink/route/interface.h | 245 +++++++++ > >> sys/netlink/route/neigh.c | 571 +++++++++++++++++++ > >> sys/netlink/route/neigh.h | 105 ++++ > >> sys/netlink/route/nexthop.c | 1000 ++++++++++++++++++++++++++= ++++++++ > >> sys/netlink/route/nexthop.h | 102 ++++ > >> sys/netlink/route/route.c | 972 ++++++++++++++++++++++++++= +++++++ > >> sys/netlink/route/route.h | 366 +++++++++++++ > >> sys/netlink/route/route_var.h | 101 ++++ > >> 34 files changed, 9391 insertions(+) > >>=20 > >=20 > > Hey Alexander, > >=20 > > This commit broke buildworld: > Should be fixed by 11ca01e9aa47 (currently building to see if that=E2=80= =99s the last one) Cool. Thanks! Tangentially related: it looks like the commit email for 11ca01e9aa47 is missing. I checked my spam folder just to make sure on my end. Thanks, --=20 Shawn Webb Cofounder / Security Engineer HardenedBSD https://git.hardenedbsd.org/hardenedbsd/pubkeys/-/raw/master/Shawn_Webb/03A= 4CBEBB82EA5A67D9F3853FF2E67A277F8E1FA.pub.asc --iwomfqhvgfyzurjf Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEA6TL67gupaZ9nzhT/y5nonf44foFAmM4br4ACgkQ/y5nonf4 4frpPRAAlMHbALjQzIhc5iLzGtNSub2VINec+7bYcb+FDu18THGYhisY5Xtyv8id GC8lBkL+Pup/EaJ+RmIogT8qnvNFVtf2r/3x5gIb06QwE2v0UlQWz+Gt0pxOSpe0 C8LDnwOYZadJavyWcoDgfGEvZ25zGbKLHrAgHDdeeCaXHiweSePrQde0VDyLy7O/ Lc0aZhW0UHjM+2itcI3oJqsW934pmoQ6tMzGP7mks0nVtHALrCEk7UARhQvXOehn jCKOGizq/9PReg57IgNHLjwCFBpoayFs+Gub3YmjvjSQNgmxxswY2F4zRf5mJZfK bVpDMyHUA0jj99mUttsBhCTfNRp4Uq9wid30cEdpXIDBws0MwPWGFztS43rVt5i1 7QWtFT+f/QC72fTvkZ8kPuDSHVxw6/hEXFj5Ly8AzNKeoKKf0OYBTi6ZUfzgsj0h 5i6kg2PQCRHo0PAuQxrOvRiyFDbSXStMs9lYc+gmlJ7jpGu/xi+LE9fVfOCNM9uS nFRbK34p/L+Bkuu4KalnXvJ+AiaqEui0uFEpc3kszlxokbH63A7DaPSotmhaU9Bc CqPYMM1mDX3RZArvbf7sIr4Cx80bR1tmG+9YbHL3KobzILWoMvhgNKTv62EdsXC6 8vNWeqBjIsra/sACdD39ZAmZPbk161cPWx9kEYLUuT78H34/sjM= =2jA8 -----END PGP SIGNATURE----- --iwomfqhvgfyzurjf--
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