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net: Adding netmap network backend

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This patch adds support for a network backend based on netmap.
netmap is a framework for high speed packet I/O. You can use it
to build extremely fast traffic generators, monitors, software
switches or network middleboxes. Its companion software switch
VALE lets you interconnect virtual machines.
netmap and VALE are implemented as a non-intrusive kernel module,
support NICs from multiple vendors, are part of standard FreeBSD
distributions and available in source format for Linux too.

To compile QEMU with netmap support, use the following configure
options:
    ./configure [...] --enable-netmap --extra-cflags=-I/path/to/netmap/sys
where "/path/to/netmap" contains the netmap source code, available at
    http://info.iet.unipi.it/~luigi/netmap/

The same webpage contains more information about the netmap project
(together with papers and presentations).

Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Vincenzo Maffione 2013-11-06 11:44:06 +01:00 • committed by Stefan Hajnoczi
parent a1d22a367d
commit 58952137b0
8 changed files with 513 additions and 3 deletions
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6
net/net.c
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@ -725,6 +725,9 @@ static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])(
[NET_CLIENT_OPTIONS_KIND_SOCKET] = net_init_socket,
#ifdef CONFIG_VDE
[NET_CLIENT_OPTIONS_KIND_VDE] = net_init_vde,
#endif
#ifdef CONFIG_NETMAP
[NET_CLIENT_OPTIONS_KIND_NETMAP] = net_init_netmap,
#endif
[NET_CLIENT_OPTIONS_KIND_DUMP] = net_init_dump,
#ifdef CONFIG_NET_BRIDGE
@ -757,6 +760,9 @@ static int net_client_init1(const void *object, int is_netdev, Error **errp)
#ifdef CONFIG_VDE
case NET_CLIENT_OPTIONS_KIND_VDE:
#endif
#ifdef CONFIG_NETMAP
case NET_CLIENT_OPTIONS_KIND_NETMAP:
#endif
#ifdef CONFIG_NET_BRIDGE
case NET_CLIENT_OPTIONS_KIND_BRIDGE:
#endif