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authorBrendan Higgins <brendanhiggins@google.com>2019-12-10 14:34:03 -0800
committerRichard Weinberger <richard@nod.at>2020-01-19 22:41:56 +0100
commit40814b98a57089463eb4be09c72205f551481f39 (patch)
tree950e8fab7065de5b7f78a37019d9a9eb8e95fac0
parentf1dc67d0e7df21b3d27beb3ec7b2c9e2b721daff (diff)
um: Mark non-vector net transports as obsolete
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>
-rw-r--r--arch/um/drivers/Kconfig81
1 files changed, 41 insertions, 40 deletions
diff --git a/arch/um/drivers/Kconfig b/arch/um/drivers/Kconfig
index 388096fb45a2..72d417055782 100644
--- a/arch/um/drivers/Kconfig
+++ b/arch/um/drivers/Kconfig
@@ -147,7 +147,7 @@ config UML_NET
make use of UML networking.
config UML_NET_ETHERTAP
- bool "Ethertap transport"
+ bool "Ethertap transport (obsolete)"
depends on UML_NET
help
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
networking.
- If you'd like to set up an IP network with the host and/or the
- outside world, say Y to this, the Daemon Transport and/or the
- 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,
- say N.
+ NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
+ migrate to UML_NET_VECTOR.
+
+ If unsure, say N.
config UML_NET_TUNTAP
- bool "TUN/TAP transport"
+ bool "TUN/TAP transport (obsolete)"
depends on UML_NET
help
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
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
- bool "SLIP transport"
+ bool "SLIP transport (obsolete)"
depends on UML_NET
help
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
networking, and details of a few quirks with it.
- The Ethertap Transport is preferred over slip because of its
- limitations. If you prefer slip, however, say Y here. Otherwise
- choose the Multicast transport (to network multiple UMLs on
- multiple hosts), Ethertap (to network with the host and the
- 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.
+ NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
+ migrate to UML_NET_VECTOR.
+
+ If unsure, say N.
config UML_NET_DAEMON
- bool "Daemon transport"
+ bool "Daemon transport (obsolete)"
depends on UML_NET
help
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
networking.
- If you'd like to set up a network with other UMLs on a single host,
- say Y. If you need a network between UMLs on multiple physical
- 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
- 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.
+ NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
+ migrate to UML_NET_VECTOR.
+
+ If unsure, say N.
config UML_NET_VECTOR
bool "Vector I/O high performance network devices"
@@ -245,7 +243,7 @@ config UML_NET_VECTOR
drivers.
config UML_NET_VDE
- bool "VDE transport"
+ bool "VDE transport (obsolete)"
depends on UML_NET
help
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
of the UML command line to use to enable VDE networking.
- If you need UML networking with VDE,
- say Y.
+ NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
+ migrate to UML_NET_VECTOR.
+
+ If unsure, say N.
config UML_NET_MCAST
- bool "Multicast transport"
+ bool "Multicast transport (obsolete)"
depends on UML_NET
help
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
networking, and notes about the security of this approach.
- If you need UMLs on multiple physical hosts to communicate as if
- they shared an Ethernet network, say Y. If you need to communicate
- with other IP machines, make sure you select one of the other
- transports (possibly in addition to Multicast; they're not
- exclusive). If you don't need to network UMLs say N to each of
- the transports.
+ NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
+ migrate to UML_NET_VECTOR.
+
+ If unsure, say N.
config UML_NET_PCAP
- bool "pcap transport"
+ bool "pcap transport (obsolete)"
depends on UML_NET
help
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
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
- Y here. Otherwise, say N.
+ NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
+ migrate to UML_NET_VECTOR.
+
+ If unsure, say N.
config UML_NET_SLIRP
- bool "SLiRP transport"
+ bool "SLiRP transport (obsolete)"
depends on UML_NET
help
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
connections passing through it (but is less secure).
- To use this you should first have slirp compiled somewhere
- accessible on the host, and have read its documentation. If you
- don't need UML networking, say N.
+ NOTE: THIS TRANSPORT IS DEPRECATED AND WILL BE REMOVED SOON!!! Please
+ migrate to UML_NET_VECTOR.
+
+ If unsure, say N.
Startup example: "eth0=slirp,FE:FD:01:02:03:04,/usr/local/bin/slirp"