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Add a get_mtu callback to NetClientInfo, along with a qemu_get_mtu() wrapper following the existing qemu_has_ufo()-style pattern, so that device models can query a netdev backend's host MTU generically without needing to know or check its backend type. Wire this up for the tap backend via tap_get_mtu(), which is now static and only referenced through net_tap_info.get_mtu, matching the existing pattern used by tap_has_ufo() and similar callbacks. This allows other backends (e.g. vhost-user, vhost-vdpa) to implement get_mtu in the future without requiring changes to any code that calls qemu_get_mtu(). Suggested-by: Eugenio Perez Martin <eperezma@redhat.com> Signed-off-by: Nariman Sayed <narimansayed28@gmail.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Eugenio Pérez <eperezma@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Message-ID: <20261007050718.926-3-narimansayed28@gmail.com>