On 26.12.2012 16:36, Bilal Ahmad wrote:
Hi all,
I am new to libvirt and started looking at the source code. While tracing back the virsh command "net-create", I got stuck into a loop and I would really like someone to explain how this works.
In the virsh-network.c, from:
network = virNetworkCreateXML(ctl->conn, buffer);
I traced back to:
if (conn->networkDriver && conn->networkDriver->networkCreateXML) { virNetworkPtr ret; ret = conn->networkDriver->networkCreateXML(conn, xmlDesc);
Some hypervisors manage networks on their own (e.g. VBox) while others rely on our bridge driver. Since we've switched to C99 struct initialization, you can simply grep for networkCreateXML: $ git grep networkCreateXML and you'll see which functions implements the functionality: [...] src/network/bridge_driver.c: .networkCreateXML = networkCreate, /* 0.2.0 */ src/remote/remote_driver.c: .networkCreateXML = remoteNetworkCreateXML, /* 0.3.0 */ src/test/test_driver.c: .networkCreateXML = testNetworkCreate, /* 0.3.2 */ src/vbox/vbox_tmpl.c: .networkCreateXML = vboxNetworkCreateXML, /* 0.6.4 */ And now you can look deeper into networkCreate(), testNetworkCreate() or vboxNetworkCreateXML(). You can repeat the process with other driver methods and drivers as well. Michal