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VSOCK: transport-specific vsock_transport functions

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struct vsock_transport contains function pointers called by AF_VSOCK
core code.  The transport may want its own transport-specific function
pointers and they can be added after struct vsock_transport.

Allow the transport to fetch vsock_transport.  It can downcast it to
access transport-specific function pointers.

The virtio transport will use this.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2016-07-28 15:36:30 +01:00 committed by Michael S. Tsirkin
parent 6190efb08c
commit 0b01aeb3d2
2 changed files with 12 additions and 0 deletions
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3
include/net/af_vsock.h
View File

@ -165,6 +165,9 @@ static inline int vsock_core_init(const struct vsock_transport *t)
}
void vsock_core_exit(void);
/* The transport may downcast this to access transport-specific functions */
const struct vsock_transport *vsock_core_get_transport(void);
/**** UTILS ****/
void vsock_release_pending(struct sock *pending);

9
net/vmw_vsock/af_vsock.c
View File

@ -1995,6 +1995,15 @@ void vsock_core_exit(void)
}
EXPORT_SYMBOL_GPL(vsock_core_exit);
const struct vsock_transport *vsock_core_get_transport(void)
{
/* vsock_register_mutex not taken since only the transport uses this
* function and only while registered.
*/
return transport;
}
EXPORT_SYMBOL_GPL(vsock_core_get_transport);
MODULE_AUTHOR("VMware, Inc.");
MODULE_DESCRIPTION("VMware Virtual Socket Family");
MODULE_VERSION("1.0.1.0-k");