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    • Andy King's avatar
      VSOCK: Introduce VM Sockets · d021c344
      Andy King authored
      VM Sockets allows communication between virtual machines and the hypervisor.
      User level applications both in a virtual machine and on the host can use the
      VM Sockets API, which facilitates fast and efficient communication between
      guest virtual machines and their host.  A socket address family, designed to be
      compatible with UDP and TCP at the interface level, is provided.
      Today, VM Sockets is used by various VMware Tools components inside the guest
      for zero-config, network-less access to VMware host services.  In addition to
      this, VMware's users are using VM Sockets for various applications, where
      network access of the virtual machine is restricted or non-existent.  Examples
      of this are VMs communicating with device proxies for proprietary hardware
      running as host applications and automated testing of applications running
      within virtual machines.
      The VMware VM Sockets are similar to other socket types, like Berkeley UNIX
      socket interface.  The VM Sockets module supports both connection-oriented
      stream sockets like TCP, and connectionless datagram sockets like UDP. The VM
      Sockets protocol family is defined as "AF_VSOCK" and the socket operations
      split for SOCK_DGRAM and SOCK_STREAM.
      For additional information about the use of VM Sockets, please refer to the
      VM Sockets Programming Guide available at:
      https://www.vmware.com/support/developer/vmci-sdk/Signed-off-by: default avatarGeorge Zhang <georgezhang@vmware.com>
      Signed-off-by: default avatarDmitry Torokhov <dtor@vmware.com>
      Signed-off-by: default avatarAndy king <acking@vmware.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>