This series adds the multi-transports support to vsock, following this proposal: https://www.spinics.net/lists/netdev/msg575792.html With the multi-transports support, we can use VSOCK with nested VMs (using also different hypervisors) loading both guest->host and host->guest transports at the same time. Before this series, vmci-transport supported this behavior but only using VMware hypervisor on L0, L1, etc. RFC: https://patchwork.ozlabs.org/cover/1168442/ RFC -> v1: - Added R-b/A-b from Dexuan and Stefan - Fixed comments and typos in several patches (Stefan) - Patch 7: changed .notify_buffer_size return to void (Stefan) - Added patch 8 to simplify the API exposed to the transports (Stefan) - Patch 11: + documented VSOCK_TRANSPORT_F_* flags (Stefan) + fixed vsock_assign_transport() when the socket is already assigned + moved features outside of struct vsock_transport, and used as parameter of vsock_core_register() as a preparation of Patch 12 - Removed "vsock: add 'transport_hg' to handle g2h\h2g transports" patch - Added patch 12 to register vmci_transport only when VMCI guest/host are active The first 9 patches are cleanups and preparations, maybe some of these can go regardless of this series. Patch 10 changes the hvs_remote_addr_init(). setting the VMADDR_CID_HOST as remote CID instead of VMADDR_CID_ANY to make the choice of transport to be used work properly. Patch 11 adds multi-transports support. Patch 12 touch a little bit the vmci_transport and the vmci driver to register the vmci_transport only when there are active host/guest. Patch 13 prevents the transport modules unloading while sockets are assigned to them. Patch 14 fixes an issue in the bind() logic discoverable only with the new multi-transport support. I've tested this series with nested KVM (vsock-transport [L0,L1], virtio-transport[L1,L2]) and with VMware (L0) + KVM (L1) (vmci-transport [L0,L1], vhost-transport [L1], virtio-transport[L2]). Dexuan successfully tested the RFC series on HyperV with a Linux guest. Stefano Garzarella (14): vsock/vmci: remove unused VSOCK_DEFAULT_CONNECT_TIMEOUT vsock: remove vm_sockets_get_local_cid() vsock: remove include/linux/vm_sockets.h file vsock: add 'transport' member in the struct vsock_sock vsock/virtio: add transport parameter to the virtio_transport_reset_no_sock() vsock: add 'struct vsock_sock *' param to vsock_core_get_transport() vsock: handle buffer_size sockopts in the core vsock: add vsock_create_connected() called by transports vsock: move vsock_insert_unbound() in the vsock_create() hv_sock: set VMADDR_CID_HOST in the hvs_remote_addr_init() vsock: add multi-transports support vsock/vmci: register vmci_transport only when VMCI guest/host are active vsock: prevent transport modules unloading vsock: fix bind() behaviour taking care of CID drivers/misc/vmw_vmci/vmci_driver.c | 50 ++++ drivers/misc/vmw_vmci/vmci_driver.h | 2 + drivers/misc/vmw_vmci/vmci_guest.c | 2 + drivers/misc/vmw_vmci/vmci_host.c | 7 + drivers/vhost/vsock.c | 96 +++--- include/linux/virtio_vsock.h | 18 +- include/linux/vm_sockets.h | 15 - include/linux/vmw_vmci_api.h | 2 + include/net/af_vsock.h | 44 +-- include/net/vsock_addr.h | 2 +- net/vmw_vsock/af_vsock.c | 376 ++++++++++++++++++------ net/vmw_vsock/hyperv_transport.c | 70 ++--- net/vmw_vsock/virtio_transport.c | 177 ++++++----- net/vmw_vsock/virtio_transport_common.c | 131 +++------ net/vmw_vsock/vmci_transport.c | 137 +++------ net/vmw_vsock/vmci_transport.h | 3 - net/vmw_vsock/vmci_transport_notify.h | 1 - 17 files changed, 627 insertions(+), 506 deletions(-) delete mode 100644 include/linux/vm_sockets.h -- 2.21.0 _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
