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vsock/vmci: register vmci_transport only when VMCI guest/host are active

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To allow other transports to be loaded with vmci_transport,
we register the vmci_transport as G2H or H2G only when a VMCI guest
or host is active.

To do that, this patch adds a callback registered in the vmci driver
that will be called when the host or guest becomes active.
This callback will register the vmci_transport in the VSOCK core.

Cc: Jorgen Hansen <jhansen@vmware.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefano Garzarella
2019-11-14 10:57:47 +01:00
committed by David S. Miller
parent c0cfa2d8a7
commit b1bba80a43
6 changed files with 103 additions and 12 deletions
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2
include/linux/vmw_vmci_api.h
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@@ -19,6 +19,7 @@
struct msghdr;
typedef void (vmci_device_shutdown_fn) (void *device_registration,
void *user_data);
typedef void (*vmci_vsock_cb) (bool is_host);
int vmci_datagram_create_handle(u32 resource_id, u32 flags,
vmci_datagram_recv_cb recv_cb,
@@ -37,6 +38,7 @@ int vmci_doorbell_destroy(struct vmci_handle handle);
int vmci_doorbell_notify(struct vmci_handle handle, u32 priv_flags);
u32 vmci_get_context_id(void);
bool vmci_is_context_owner(u32 context_id, kuid_t uid);
int vmci_register_vsock_callback(vmci_vsock_cb callback);
int vmci_event_subscribe(u32 event,
vmci_event_cb callback, void *callback_data,