From 101625a4d4ac7e96227a156bc5f6d21a9cc383cd Mon Sep 17 00:00:00 2001 From: Thomas Huth Date: Thu, 20 Sep 2018 10:14:08 +0200 Subject: [PATCH] net: Deprecate the "name" parameter of -net MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit In early times, network backends were specified by a "vlan" and "name" tuple. With the introduction of netdevs, the "name" was replaced by an "id" (which is supposed to be unique), but the "name" parameter stayed as an alias which could be used instead of "id". Unfortunately, we miss the duplication check for "name": $ qemu-system-x86_64 -net user,name=n1 -net user,name=n1 ... starts without an error, while "id" correctly complains: $ qemu-system-x86_64 -net user,id=n1 -net user,id=n1 qemu-system-x86_64: -net user,id=n1: Duplicate ID 'n1' for net Instead of trying to fix the code for the legacy "name" parameter, let's rather get rid of this old interface and deprecate the "name" parameter now - this will also be less confusing for the users in the long run. Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Markus Armbruster Signed-off-by: Thomas Huth --- net/net.c | 4 ++++ qemu-deprecated.texi | 5 +++++ 2 files changed, 9 insertions(+) diff --git a/net/net.c b/net/net.c index 2a3133990c..cdcd5cf634 100644 --- a/net/net.c +++ b/net/net.c @@ -984,6 +984,10 @@ static int net_client_init1(const void *object, bool is_netdev, Error **errp) /* missing optional values have been initialized to "all bits zero" */ name = net->has_id ? net->id : net->name; + if (net->has_name) { + warn_report("The 'name' parameter is deprecated, use 'id' instead"); + } + /* Map the old options to the new flat type */ switch (opts->type) { case NET_LEGACY_OPTIONS_TYPE_NONE: diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi index 2283fc52c3..4ac5c6a6f0 100644 --- a/qemu-deprecated.texi +++ b/qemu-deprecated.texi @@ -83,6 +83,11 @@ The 'file' driver for drives is no longer appropriate for character or host devices and will only accept regular files (S_IFREG). The correct driver for these file types is 'host_cdrom' or 'host_device' as appropriate. +@subsection -net ...,name=@var{name} (since 3.1) + +The @option{name} parameter of the @option{-net} option is a synonym +for the @option{id} parameter, which should now be used instead. + @section QEMU Machine Protocol (QMP) commands @subsection block-dirty-bitmap-add "autoload" parameter (since 2.12.0)