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um: Mark non-vector net transports as obsolete

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UML_NET_VECTOR now supports filters compiled with pcap outside of UML;
it also supports: EoGRE, EoL2TPv3, RAW (+/- BPF), TAP and BESS.

While vector drivers are not 1:1 replacements for the existing drivers,
you can achieve the same topologies and the same connectivity at much
higher performance (2.5 to 9 Gbit on mid-range Ryzen desktop) - the old
drivers test out in the 500Mbit range on the same hardware.

For all these reasons, the non-vector based transports are now
unnecessary, and some, most notably pcap and vde are maintenance
burdens. Thus, it makes sense to at least start thinking about removing
the non-vector transports, so for now, mark them as obsolete.

Link: https://lore.kernel.org/lkml/15f048d3-07ab-61c1-c6e0-0712e626dd33@cambridgegreys.com/T/#u
Suggested-by: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Brendan Higgins 2019-12-10 14:34:03 -08:00 committed by Richard Weinberger
parent f1dc67d0e7
commit 40814b98a5
1 changed files with 41 additions and 40 deletions
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81
arch/um/drivers/Kconfig
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@ -147,7 +147,7 @@ config UML_NET
make use of UML networking. make use of UML networking.
config UML_NET_ETHERTAP config UML_NET_ETHERTAP
bool "Ethertap transport" bool "Ethertap transport (obsolete)"
depends on UML_NET depends on UML_NET
help help
The Ethertap User-Mode Linux network transport allows a single The Ethertap User-Mode Linux network transport allows a single
@ -167,14 +167,13 @@ config UML_NET_ETHERTAP
has examples of the UML command line to use to enable Ethertap has examples of the UML command line to use to enable Ethertap
networking. networking.
If you'd like to set up an IP network with the host and/or the NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
outside world, say Y to this, the Daemon Transport and/or the migrate to UML_NET_VECTOR.
Slip Transport. You'll need at least one of them, but may choose
more than one without conflict. If you don't need UML networking, If unsure, say N.
say N.
config UML_NET_TUNTAP config UML_NET_TUNTAP
bool "TUN/TAP transport" bool "TUN/TAP transport (obsolete)"
depends on UML_NET depends on UML_NET
help help
The UML TUN/TAP network transport allows a UML instance to exchange The UML TUN/TAP network transport allows a UML instance to exchange
@ -185,8 +184,13 @@ config UML_NET_TUNTAP
To use this transport, your host kernel must have support for TUN/TAP To use this transport, your host kernel must have support for TUN/TAP
devices, either built-in or as a module. devices, either built-in or as a module.
NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
migrate to UML_NET_VECTOR.
If unsure, say N.
config UML_NET_SLIP config UML_NET_SLIP
bool "SLIP transport" bool "SLIP transport (obsolete)"
depends on UML_NET depends on UML_NET
help help
The slip User-Mode Linux network transport allows a running UML to The slip User-Mode Linux network transport allows a running UML to
@ -201,16 +205,13 @@ config UML_NET_SLIP
has examples of the UML command line to use to enable slip has examples of the UML command line to use to enable slip
networking, and details of a few quirks with it. networking, and details of a few quirks with it.
The Ethertap Transport is preferred over slip because of its NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
limitations. If you prefer slip, however, say Y here. Otherwise migrate to UML_NET_VECTOR.
choose the Multicast transport (to network multiple UMLs on
multiple hosts), Ethertap (to network with the host and the If unsure, say N.
outside world), and/or the Daemon transport (to network multiple
UMLs on a single host). You may choose more than one without
conflict. If you don't need UML networking, say N.
config UML_NET_DAEMON config UML_NET_DAEMON
bool "Daemon transport" bool "Daemon transport (obsolete)"
depends on UML_NET depends on UML_NET
help help
This User-Mode Linux network transport allows one or more running This User-Mode Linux network transport allows one or more running
@ -225,13 +226,10 @@ config UML_NET_DAEMON
has examples of the UML command line to use to enable Daemon has examples of the UML command line to use to enable Daemon
networking. networking.
If you'd like to set up a network with other UMLs on a single host, NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
say Y. If you need a network between UMLs on multiple physical migrate to UML_NET_VECTOR.
hosts, choose the Multicast Transport. To set up a network with
the host and/or other IP machines, say Y to the Ethertap or Slip If unsure, say N.
transports. You'll need at least one of them, but may choose
more than one without conflict. If you don't need UML networking,
say N.
config UML_NET_VECTOR config UML_NET_VECTOR
bool "Vector I/O high performance network devices" bool "Vector I/O high performance network devices"
@ -245,7 +243,7 @@ config UML_NET_VECTOR
drivers. drivers.
config UML_NET_VDE config UML_NET_VDE
bool "VDE transport" bool "VDE transport (obsolete)"
depends on UML_NET depends on UML_NET
help help
This User-Mode Linux network transport allows one or more running This User-Mode Linux network transport allows one or more running
@ -263,11 +261,13 @@ config UML_NET_VDE
That site has a good overview of what VDE is and also examples That site has a good overview of what VDE is and also examples
of the UML command line to use to enable VDE networking. of the UML command line to use to enable VDE networking.
If you need UML networking with VDE, NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
say Y. migrate to UML_NET_VECTOR.
If unsure, say N.
config UML_NET_MCAST config UML_NET_MCAST
bool "Multicast transport" bool "Multicast transport (obsolete)"
depends on UML_NET depends on UML_NET
help help
This Multicast User-Mode Linux network transport allows multiple This Multicast User-Mode Linux network transport allows multiple
@ -284,15 +284,13 @@ config UML_NET_MCAST
has examples of the UML command line to use to enable Multicast has examples of the UML command line to use to enable Multicast
networking, and notes about the security of this approach. networking, and notes about the security of this approach.
If you need UMLs on multiple physical hosts to communicate as if NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
they shared an Ethernet network, say Y. If you need to communicate migrate to UML_NET_VECTOR.
with other IP machines, make sure you select one of the other
transports (possibly in addition to Multicast; they're not If unsure, say N.
exclusive). If you don't need to network UMLs say N to each of
the transports.
config UML_NET_PCAP config UML_NET_PCAP
bool "pcap transport" bool "pcap transport (obsolete)"
depends on UML_NET depends on UML_NET
help help
The pcap transport makes a pcap packet stream on the host look The pcap transport makes a pcap packet stream on the host look
@ -304,11 +302,13 @@ config UML_NET_PCAP
<http://user-mode-linux.sourceforge.net/old/networking.html> That site <http://user-mode-linux.sourceforge.net/old/networking.html> That site
has examples of the UML command line to use to enable this option. has examples of the UML command line to use to enable this option.
If you intend to use UML as a network monitor for the host, say NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
Y here. Otherwise, say N. migrate to UML_NET_VECTOR.
If unsure, say N.
config UML_NET_SLIRP config UML_NET_SLIRP
bool "SLiRP transport" bool "SLiRP transport (obsolete)"
depends on UML_NET depends on UML_NET
help help
The SLiRP User-Mode Linux network transport allows a running UML The SLiRP User-Mode Linux network transport allows a running UML
@ -328,9 +328,10 @@ config UML_NET_SLIRP
that of a host behind a firewall that masquerades all network that of a host behind a firewall that masquerades all network
connections passing through it (but is less secure). connections passing through it (but is less secure).
To use this you should first have slirp compiled somewhere NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
accessible on the host, and have read its documentation. If you migrate to UML_NET_VECTOR.
don't need UML networking, say N.
If unsure, say N.
Startup example: "eth0=slirp,FE:FD:01:02:03:04,/usr/local/bin/slirp" Startup example: "eth0=slirp,FE:FD:01:02:03:04,/usr/local/bin/slirp"