Network instantiated peripheral devices
Enhanced apparatuses, systems, and techniques for coupling network-linked peripheral devices into host computing devices is presented. A method includes, over a network interface of a host device, obtaining an indication of a peripheral device available for associating with the host device. Based on the indication, the method includes initiating instantiation of the peripheral device into a Peripheral Component Interconnect Express (PCIe) subsystem of the host device by at least emulating behavior of the peripheral device over the network interface as a PCIe peripheral device coupled locally to the host system.
1 . A method comprising:
obtaining traffic for a peripheral device issued by a device driver to a local peripheral interconnect interface of a host device;
translating the traffic into a network packet format suitable for a network interface of the host device comprising a header having an identifier for the peripheral device, wherein the identifier for the peripheral device comprises a device-specific network port and address which is included in the header; and
transferring the traffic in the network packet format for delivery to the peripheral device over the network interface.
2 . The method of claim 1 , comprising:
receiving additional traffic issued by the peripheral device and received over the network interface;
translating the additional traffic into translated additional traffic comprising a peripheral format suitable for the local peripheral interconnect interface of the host device; and
emulating the peripheral device as a locally coupled device to the local peripheral interconnect interface by at least providing the translated additional traffic over the local peripheral interconnect interface to reach the device driver.
3 . The method of claim 2 , comprising:
translating the additional traffic into the peripheral format suitable for the local peripheral interconnect interface of the host device by at least interpreting a network packet format used by the network interface and converting the additional traffic into the translated additional traffic in the peripheral format used by the local peripheral interconnect interface to communicate with local peripheral devices.
4 . The method of claim 1 , comprising:
initiating instantiation of the peripheral device into the local peripheral interconnect interface of the host device, wherein once instantiated, the device driver for the local peripheral interconnect interface interfaces with the peripheral device coupled over the network interface in a native format corresponding to the local peripheral interconnect interface.
5 . The method of claim 1 , comprising:
translating the traffic into the network packet format suitable for the network interface of the host device by at least interpreting a peripheral format used by the local peripheral interconnect interface to communicate with local peripheral devices of the host system and converting the traffic in the peripheral format into the translated traffic in the network packet format.
6 . The method of claim 5 , wherein
the peripheral format corresponds to a peripheral component interconnect express (PCIe) datagram format employed for local peripheral devices of the host device; and
wherein the network packet format comprises Ethernet frames or Internet Protocol (IP) packets.
7 . The method of claim 1 , comprising:
initiating instantiation of the peripheral device into the local peripheral interconnect interface by at least triggering an entry point process for the peripheral device in the local peripheral interconnect interface to emulate a hardware hot-plugging process for the peripheral device with the local peripheral interconnect interface.
8 . The method of claim 7 , wherein emulating the hardware plugging process comprises providing address space descriptions to the local peripheral interconnect interface to access the peripheral device as a local peripheral device.
9 . The method of claim 1 , comprising:
removing instantiation of the peripheral device from the local peripheral interconnect interface by at least emulating a device unplug process for the peripheral device in the local peripheral interconnect interface.
10 . The method of claim 1 , wherein emulating the hardware removal process comprises issuing a detach command to the local peripheral interconnect interface for the peripheral device and deconstructing the address space descriptions associated with the peripheral device.
11 . An apparatus, comprising:
program instructions stored on one or more non-transitory computer readable storage media, the program instructions executable by a processing system to direct the processing system to at least:
obtain traffic for a peripheral device issued by a device driver to a local peripheral interconnect interface of a host device;
translate the traffic into a network packet format suitable for a network interface of the host device comprising a header having an identifier for the peripheral device, wherein the identifier for the peripheral device comprises a device-specific network port and address which is included in the header; and
transfer the traffic in the network packet format for delivery to the peripheral device over the network interface.
12 . The apparatus of claim 11 , comprising program instructions stored on the one or more non-transitory computer readable storage media, the program instructions executable by the processing system to direct the processing system to at least:
receive additional traffic issued by the peripheral device and received over the network interface;
translate the additional traffic into translated additional traffic comprising a peripheral format suitable for the local peripheral interconnect interface of the host device; and
emulate the peripheral device as a locally coupled device to the local peripheral interconnect interface by at least providing the translated additional traffic over the local peripheral interconnect interface to reach the device driver.
13 . The apparatus of claim 12 ,
comprising program instructions stored on the one or more non-transitory computer readable storage media, the program instructions executable by the processing system to direct the processing system to at least:
translate the additional traffic into the peripheral format suitable for the local peripheral interconnect interface of the host device by at least interpreting a network packet format used by the network interface and converting the additional traffic into the translated additional traffic in the peripheral format used by the local peripheral interconnect interface to communicate with local peripheral devices.
14 . The apparatus of claim 11 , comprising program instructions stored on the one or more non-transitory computer readable storage media, the program instructions executable by the processing system to direct the processing system to at least:
initiate instantiation of the peripheral device into the local peripheral interconnect interface of the host device, wherein once instantiated, the device driver for the local peripheral interconnect interface interfaces with the peripheral device coupled over the network interface in a native format corresponding to the local peripheral interconnect interface.
15 . The apparatus of claim 11 , comprising program instructions stored on the one or more non-transitory computer readable storage media, the program instructions executable by the processing system to direct the processing system to at least:
translate the traffic into the network packet format by at least interpreting a peripheral format used by the local peripheral interconnect interface to communicate with local peripheral devices and converting the traffic in the peripheral format into the translated traffic in a network packet format.
16 . The apparatus of claim 15 , wherein the peripheral format corresponds to a peripheral component interconnect express (PCIe) datagram format employed for local peripheral devices; and
wherein the network packet format comprises Ethernet frames or Internet Protocol (IP) packets.
17 . The apparatus of claim 11 , comprising program instructions stored on the one or more non-transitory computer readable storage media, the program instructions executable by the processing system to direct the processing system to at least:
initiate instantiation of the peripheral device into the local peripheral interconnect interface by at least triggering an entry point process for the peripheral device in the local peripheral interconnect interface to emulate a hardware hot-plugging process of the peripheral device into the host device.
18 . The apparatus of claim 17 , comprising program instructions stored on the one or more non-transitory computer readable storage media, the program instructions executable by the processing system to direct the processing system to at least:
initiate de-instantiation of the peripheral device from the local peripheral interconnect interface by at least triggering an exit point process for the peripheral device in the local peripheral interconnect interface that issues a detach command to the local peripheral interconnect interface for the peripheral device to emulate a hardware unplugging process of the peripheral device from the host device.
19 . A system, comprising:
a local interface configured to communicate with a local peripheral interconnect interface of a host device;
a remote interface configured to communicate over a network interface of the host device;
an interworking unit configured to:
obtain traffic for a peripheral device issued by an application through a device driver to the local peripheral interconnect interface of the host device;
translate the first traffic into translated traffic comprising a network packet format suitable for the network interface of the host device, wherein the peripheral device is identified in a header portion for the translated traffic, wherein the peripheral device is identified in the header portion by at least a device-specific network port and address; and
transfer the translated traffic over the network interface for delivery to the peripheral device.
20 . The system of claim 19 , comprising:
the interworking unit configured to:
receive additional traffic issued by the peripheral device and received over the network interface;
translate the additional traffic into translated additional traffic comprising a peripheral format suitable for the local peripheral interconnect interface; and
emulate the peripheral device as a locally coupled device to the local peripheral interconnect interface by at least providing the translated additional traffic over the local peripheral interconnect interface to reach the device driver.