Method and system for using DLPI to negotiate advanced interfaces
View Patent ↗A method for obtaining a capability of a network interface card (NIC). The method includes sending a first data link provider interface (DLPI) request to the NIC and sending a DLPI acknowledgement to an operating system, where the DLPI acknowledgement includes the capability of the NIC. The method further includes enabling the capability on the operating system and establishing a direct communication channel between the NIC and the operating system using the capability.
1. A method for obtaining a capability of a network interface card (NIC) comprising:
sending a first data link provider interface (DLPI) request for the NIC to a DLPI, wherein the first DLPI request comprises a query for a capability of the NIC;
sending the first DLPI request from the DLPI to a NIC driver associated with the NIC;
determining, in response to the first DLPI request, the capability of the NIC;
sending a DLPI acknowledgement to the DLPI from the NIC driver;
sending the DLPI acknowledgement from the DLPI to an operating system, wherein the DLPI acknowledgement comprises the capability of the NIC;
establishing, in response to the DLPI acknowledgment, a direct communication channel between the NIC driver and the operating system, wherein the direct communication channel bypasses the DLPI; and
enabling the operating system, through the direct communication channel, to utilize the capability of the NIC,
wherein enabling the operating system through the direct communication channel, to utilize the capability of the NIC comprises sending a second DLPI request to the NIC driver associated with the NIC,
wherein the DLPI acknowledgement comprises at least one interface associated with the capability, and
wherein the operating system is configured to use the capability through a function pointer provided in the interface.
2. The method of claim 1 , wherein the first DLPI request comprises a type, an offset and a length.
3. The method of claim 1 , wherein the DLPI acknowledgement comprises a type, an offset, a length, and the capability.
4. The method of claim 1 , wherein the second DLPI request comprises a type, an offset, and a length.
5. The method of claim 1 , wherein the NIC is configured to use an OS interface through a function pointer.
6. A system, comprising:
a network interface card (NIC), wherein the NIC comprises a capability;
a NIC driver interfacing with the NIC, wherein the NIC driver is configured to store the capability of the NIC; and
a data link provider interface (DLPI) configured to interface the NIC driver with an operating system,
wherein the operating system is configured to:
request the capability of the NIC from the NIC driver using the DLPI,
receive a DLPI acknowledgement of the capability of the NIC from the NIC driver, wherein the acknowledgement is routed through the DLPI,
enable the capability of the NIC, and
establish, in response to the DLPI acknowledgement, a direct communication channel between the operating system and the NIC driver to use the capability of the NIC, wherein the direct communication channel bypasses the DLPI,
wherein the operating system requests the capability of the NIC using a first DLPI request,
wherein enabling the operating system, through the direct communication channel, to use the capability of the NIC comprises sending a second DLPI request to the NIC driver associated with the NIC,
wherein the DLPI acknowledgement comprises at least one interface associated with the capability, and
wherein the operating system is configured to use the capability through a function pointer provided in the interface.
7. The system of claim 6 , wherein the DLPI acknowledgement comprises a type, an offset a length, and the capability.
8. The system of claim 6 , wherein the first DLPI request comprises a type, an offset, and a length.
9. The system of claim 6 , wherein the second DLPI request comprises a type, an offset, a length, and an optional interface associated with the operating system.
10. A computer system for obtaining a capability of a network interface card (NIC), comprising:
a processor;
a memory;
a storage device; and
software instructions stored in the memory for enabling the computer system under control of the processor, to:
send a first data link provider interface (DLPI) request for the NIC to a data link provider interface (DLPI), wherein the first DLPI request comprises a query for a capability of the NIC;
send the first DLPI request from the DLPI to a NIC driver associated with the NIC;
determine, in response to the first DLPI request, the capability of the NIC;
send a DLPI acknowledgement to the DLPI from the NIC driver;
send the DLPI acknowledgement from the DLPI to an operating system,
wherein the DLPI acknowledgement comprises the capability of the NIC;
establish, in response to the DLPI acknowledgement, a direct communication channel between the NIC driver and the operating system, wherein the direct communication channel bypasses the DLPI; and
enable the operating system, through the direct communication channel, to utilize the capability of the NIC,
wherein enabling the operating system, through the direct communication channel, to utilize the capability of the NIC comprises sending a second DLPI request to the NIC driver associated with the NIC,
wherein the DLPI acknowledgement comprises at least one interface associated with the capability, and
wherein the operating system is configured to use the capability through a function pointer provided in the interface.
11. A plurality of nodes, comprising:
a network interface card (NIC), wherein the NIC comprises a capability;
a NIC driver interfacing with the NIC, wherein the NIC driver is configured to store the capability of the NIC; and
a data link provider interface (DLPI) configured to interface the NIC driver with an operating system,
wherein the operating system is configured to:
request the capability of the NIC from the NIC driver,
receive a DLPI acknowledgement of the capability of the NIC from the NIC driver, wherein the DLPI acknowledgement is routed through the DLPI,
enable the capability of the NIC, and
establish, in response to the DLPI acknowledgement, a direct communication channel between the operating system and the NIC driver to use the capability of the NIC, wherein the direct communication channel bypasses the DLPI,
wherein the NIC resides on one of the plurality of nodes,
wherein the NIC driver resides on one of the plurality of nodes, and
wherein the operating system resides on one of the plurality of nodes,
wherein the operating system requests the capability of the NIC using a first DLPI request,
wherein enabling the operating system through the direct communication channel, to use the capability of the NIC comprises sending a second DLPI request to the NIC driver associated with the NIC,
wherein the DLPI acknowledgement comprises at least one interface associated with the capability, and
wherein the operating system is configured to use the capability through a function pointer provided in the interface.