Re: git: 7e5bf68495cc - main - netlink: add netlink support
Date: Sat, 01 Oct 2022 16:51:40 UTC
In message <20221001164556.guh2gu6umjvehq3r@mutt-hbsd>, Shawn Webb writes: > > --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. It's not missing. He hasn't pushed it yet. Alexander's statement in brackets "()" implies he hasn't pushed it yet. ** Though, the hash will change should a rebase be needed between the time he committed it and it is pushed. -- Cheers, Cy Schubert <Cy.Schubert@cschubert.com> FreeBSD UNIX: <cy@FreeBSD.org> Web: http://www.FreeBSD.org NTP: <cy@nwtime.org> Web: https://nwtime.org e^(i*pi)+1=0