The commit log of Patch 1 explains the majority of the reason for these patches. In short, they disambiguate the multiple netdevs per PCI device on the SRIOV PF and VFs of a Mellanox dual port NIC *when converting from a VF netdev to a PF netdev and vice versa*. This permits us to set the vlan tag and MAC address for the correct VF netdev (and detect the online status of the correct PF netdev for that VF) when using a VF in macvtap passthrough mode. (in other words, with these patches in place, it is possible to use *all* the VF netdevs on both ports of a dual port mellanox NIC for macvtap passthrough.) These patches *do not* solve the problem of saving/setting the mac address/vlan tag for both ports when using a dual port VF for PCI device assignment with VFIO (see my RFC email from yesterday). That is a much more complex problem. (These patches are a prerequisite to anything that might come out of that RFC though). Laine Stump (3): util: new function virNetDevGetPhysPortID() util: support matching a phys_port_id in virPCIGetNetName() util: match phys_port_id when converting PF-netdev to/from VF-netdev src/libvirt_private.syms | 1 + src/util/virhostdev.c | 2 +- src/util/virnetdev.c | 84 +++++++++++++++++++++++++++++++++++++++++++++--- src/util/virnetdev.h | 5 +++ src/util/virpci.c | 49 ++++++++++++++++++++++------ src/util/virpci.h | 4 ++- 6 files changed, 129 insertions(+), 16 deletions(-) -- 2.13.3 -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list
