System and methods for inter-driver communication
View Patent ↗In certain embodiments host system drivers communicate with one another via messages posted to mailbox registers in a network adapter. Executable code within the network adapter's memory notifies host system drivers of posted messages, waits for acknowledgments from the drivers and sends a completion notification to the host system drivers.
1. A machine-implemented method, the method comprising:
enabling drivers in a host system to communicate with each other, the host system executing a first driver associated with a first function in a network adapter and other drivers associated with other functions in the network adapter;
the first driver posting a message in the network adapter, the message indicating that the first driver is about to perform an action;
executable code stored in memory of the network adapter notifying the other drivers of contents of the posted message;
the other drivers acknowledging receipt of the notification;
the executable code waiting for all of the other drivers to either acknowledge receipt of the notification or timeout after a specified amount of time; and
the executable code sending a completion notification to all of the drivers.
2. The method of claim 1 , wherein the executable code is implemented in firmware.
3. The method of claim 1 , wherein the executable code is implemented in software.
4. The method of claim 1 , wherein the executable code is implemented in a combination of firmware and software.
5. The method of claim 1 , wherein the first inter driver posts the message to a mailbox register in a host interface in the network adapter.
6. A non-transitory machine readable storage medium storing executable instructions, which when executed by a machine, cause the machine to perform a process, the process comprising:
enabling drivers in a host system to communicate with each other, the host system executing a first driver associated with a first function in a network adapter and other drivers associated with other functions in the network adapter;
the first driver posting a message in the network adapter, the message indicating that the first driver is about to perform an action;
executable code stored in memory of the network adapter notifying the other drivers of contents of the posted message;
the other drivers acknowledging receipt of the notification;
the executable code waiting for all of the other drivers to either acknowledge receipt of the notification or timeout after a specified amount of time; and
the executable code sending a completion notification to all of the drivers.
7. The machine readable storage medium of claim 6 , wherein the executable code is implemented in firmware.
8. The machine readable storage medium of claim 6 , wherein the executable code is implemented in software.
9. The machine readable storage medium of claim 6 , wherein the executable code is implemented in a combination of firmware and software.
10. The machine readable storage medium of claim 6 , wherein the first driver posts the message to a mailbox register in a host interface in the network adapter.
11. A computer program product, comprising:
a non-transitory computer usable storage medium having computer readable instructions embodied therein for enabling drivers in a host system to communicate with each other, the host system executing a first driver associated with a first function in a network adapter and other drivers associated with other functions in the network adapter, the computer readable instructions comprising:
the first driver posting a message in the network adapter, the message indicating that the first driver is about to perform an action;
executable code stored in memory of the network adapter notifying the other drivers of contents of the posted message;
the other drivers acknowledging receipt of the notification;
the executable code waiting for all of the other drivers to either acknowledge receipt of the notification or timeout after a specified amount of time; and
the executable code sending a completion notification to all of the drivers.
12. The computer program product of claim 11 , wherein the executable code is implemented in firmware.
13. The computer program product of claim 11 , wherein the executable code is implemented in software.
14. The computer program product of claim 11 , wherein the executable code is implemented in a combination of firmware and software.
15. The computer program product of claim 11 , wherein the first driver posts the message to a mailbox register in a host interface in the network adapter.