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Tsirkin" To: Laurent Vivier Cc: qemu-devel@nongnu.org, Stefano Stabellini , Daniel =?iso-8859-1?Q?P=2E_Berrang=E9?= , "Dr. David Alan Gilbert" , Jason Wang , Paolo Bonzini , Anthony Perard , Greg Kurz , Eric Blake , Stefan Weil , Thomas Huth , Samuel Thibault , Markus Armbruster , Paul Durrant , David Gibson , xen-devel@lists.xenproject.org, Ralph Schmieder , Stefano Brivio Subject: Re: [PATCH v11 00/17] qapi: net: add unix socket type support to netdev backend Message-ID: <20221026153926-mutt-send-email-mst@kernel.org> References: <20221011200539.1486809-1-lvivier@redhat.com> MIME-Version: 1.0 In-Reply-To: <20221011200539.1486809-1-lvivier@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=WINDOWS-1252 Content-Disposition: inline Content-Transfer-Encoding: 8bit On Tue, Oct 11, 2022 at 10:05:22PM +0200, Laurent Vivier wrote: > "-netdev socket" only supports inet sockets. > > It's not a complex task to add support for unix sockets, but > the socket netdev parameters are not defined to manage well unix > socket parameters. Acked-by: Michael S. Tsirkin this is Jason's area though. > As discussed in: > > "socket.c added support for unix domain socket datagram transport" > https://lore.kernel.org/qemu-devel/1C0E1BC5-904F-46B0-8044-68E43E67BE60@gmail.com/ > > This series adds support of unix socket type using SocketAddress QAPI structure. > > Two new netdev backends, "stream" and "dgram" are added, that are barely a copy of "socket" > backend but they use the SocketAddress QAPI to provide socket parameters. > And then they also implement unix sockets (TCP and UDP). > > Some examples of CLI syntax: > > for TCP: > > -netdev stream,id=socket0,addr.type=inet,addr.host=localhost,addr.port=1234 > -netdev stream,id=socket0,server=off,addr.type=inet,addr.host=localhost,addr.port=1234 > > -netdev dgram,id=socket0,\ > local.type=inet,local.host=localhost,local.port=1234,\ > remote.type=inet,remote.host=localhost,remote.port=1235 > > for UNIX: > > -netdev stream,id=socket0,addr.type=unix,addr.path=/tmp/qemu0 > -netdev stream,id=socket0,server=off,addr.type=unix,addr.path=/tmp/qemu0 > > -netdev dgram,id=socket0,\ > local.type=unix,local.path=/tmp/qemu0,\ > remote.type=unix,remote.path=/tmp/qemu1 > > for FD: > > -netdev stream,id=socket0,addr.type=fd,addr.str=4 > -netdev stream,id=socket0,server=off,addr.type=fd,addr.str=5 > > -netdev dgram,id=socket0,local.type=fd,addr.str=4 > > v11: > - use qemu_set_info_str() in hw/net/xen_nic.c > - fix link_down state in stream client mode > - cleanup error case in net_stream_receive() > - update qapi version to 7.2 > > v10: > - add Red Hat copyright > - initialize dgram_dst to NULL in SOCKET_ADDRESS_TYPE_FD > - remove redundente _stream / _dgram in functions name > - move net_dgram_init() into net_init_dgram() > - address Thomas' comments on qtest > - add a function qemu_set_info_str() to set info string > - tested stream netdev with fd type using qrap/passt and > "-netdev stream,addr.type=fd,server=off,addr.str=5,id=netdev0" > > v9: > - add events to report stream connection/disconnection > - remove from net/dgram.c send_fn, listen_fd, net_dgram_accept() > net_dgram_connect() and net_dgram_send() that are only > needed by net/stream.c > - remove from net/stream.c send_fn > - add Red Hat copyright > - add original net/socket.c Stefano's patch (EINVAL) > > v8: > - test ipv4 and ipv6 parameters (stream inet) > - test abstract parameter (stream unix) > - add SocketAddressInet supported parameters in qemu-options.hx > (only stream, supported by the move to QIO) > - with qio_channel_writev() replace (ret == -1 && errno == EAGAIN) > by (ret == QIO_CHANNEL_ERR_BLOCK) > > v7: > - add qtests > - update parameters table in net.json > - update socket_uri() and socket_parse() > > v6: > - s/netdev option/-netdev option/ PATCH 4 > - s/ / / > - update @NetdevStreamOptions and @NetdevDgramOptions comments > - update PATCH 4 description message > - add missing return in error case for unix stream socket > - split socket_uri() patch: move and rename, then change content > > v5: > - remove RFC prefix > - put the change of net_client_parse() into its own patch (exit() in the > function) > - update comments regarding netdev_is_modern() and netdev_parse_modern() > - update error case in net_stream_server_init() > - update qemu-options.hx with unix type > - fix HMP "info network" with unix protocol/server side. > > v4: > - net_client_parse() fails with exit() rather than with return. > - keep "{ 'name': 'vmnet-host', 'if': 'CONFIG_VMNET' }" on its > own line in qapi/net.json > - add a comment in qapi/net.json about parameters usage > - move netdev_is_modern() check to qemu_init() > - in netdev_is_modern(), check for JSON and use qemu_opts_do_parse() > to parse parameters and detect type value. > - add a blank line after copyright comment > > v3: > - remove support of "-net" for dgram and stream. They are only > supported with "-netdev" option. > - use &error_fatal directly in net_client_inits() > - update qemu-options.hx > - move to QIO for stream socket > > v2: > - use "stream" and "dgram" rather than "socket-ng,mode=stream" > and ""socket-ng,mode=dgram" > - extract code to bypass qemu_opts_parse_noisily() to > a new patch > - do not ignore EINVAL (Stefano) > - fix "-net" option > > CC: Ralph Schmieder > CC: Stefano Brivio > CC: Daniel P. Berrangé > CC: Markus Armbruster > > Laurent Vivier (15): > net: introduce convert_host_port() > net: remove the @errp argument of net_client_inits() > net: simplify net_client_parse() error management > qapi: net: introduce a way to bypass qemu_opts_parse_noisily() > net: introduce qemu_set_info_str() function > qapi: net: add stream and dgram netdevs > net: stream: add unix socket > net: dgram: make dgram_dst generic > net: dgram: move mcast specific code from net_socket_fd_init_dgram() > net: dgram: add unix socket > qemu-sockets: move and rename SocketAddress_to_str() > qemu-sockets: update socket_uri() and socket_parse() to be consistent > net: stream: move to QIO to enable additional parameters > tests/qtest: netdev: test stream and dgram backends > net: stream: add QAPI events to report connection state > > Stefano Brivio (2): > net: socket: Don't ignore EINVAL on netdev socket connection > net: stream: Don't ignore EINVAL on netdev socket connection > > hmp-commands.hx | 2 +- > hw/net/xen_nic.c | 5 +- > include/net/net.h | 7 +- > include/qemu/sockets.h | 4 +- > meson | 2 +- > monitor/hmp-cmds.c | 23 +- > net/clients.h | 6 + > net/dgram.c | 622 ++++++++++++++++++++++++++++++++++++ > net/hub.c | 2 + > net/l2tpv3.c | 3 +- > net/meson.build | 2 + > net/net.c | 186 ++++++++--- > net/slirp.c | 5 +- > net/socket.c | 36 +-- > net/stream.c | 389 ++++++++++++++++++++++ > net/tap-win32.c | 3 +- > net/tap.c | 13 +- > net/vde.c | 3 +- > net/vhost-user.c | 3 +- > net/vhost-vdpa.c | 2 +- > qapi/net.json | 112 ++++++- > qemu-options.hx | 14 + > softmmu/vl.c | 16 +- > tests/qtest/meson.build | 1 + > tests/qtest/netdev-socket.c | 417 ++++++++++++++++++++++++ > util/qemu-sockets.c | 25 ++ > 26 files changed, 1771 insertions(+), 132 deletions(-) > create mode 100644 net/dgram.c > create mode 100644 net/stream.c > create mode 100644 tests/qtest/netdev-socket.c > > -- > 2.37.3 >