bnxt_en: Firmware error recovery support

Implement firmware error recovery support for Thor adapters.
This entails enabling the capability for the firmware to initiate
error recovery. Specifically,

bnxt_en: Firmware error recovery support

Implement firmware error recovery support for Thor adapters.
This entails enabling the capability for the firmware to initiate
error recovery. Specifically, the firmware will send the reset notify
asynchronous event to notify the driver of an error and impending reset.
Subsequently, the driver will queue a task to execute the following steps.

1. Deactivate the allocated resources.
2. Await completion of the firmware's recovery process.
3. Configure the resources and reactivate the network interface.

Reviewed by: imp
Approved by: imp
Differential revision: https://reviews.freebsd.org/D45008

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bnxt_en: Added support for priority queues extended stats

Below priority queues extended stats are exposed to sysctl:

tx_bytes_pri{0-7}
rx_bytes_pri{0-7}
tx_packets_pri{0-7}
rx_packets_pri{0-7}

Re

bnxt_en: Added support for priority queues extended stats

Below priority queues extended stats are exposed to sysctl:

tx_bytes_pri{0-7}
rx_bytes_pri{0-7}
tx_packets_pri{0-7}
rx_packets_pri{0-7}

Reviewed by: imp
Approved by: imp
Differential revision: https://reviews.freebsd.org/D45007

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bnxt_en: L2-RoCE driver communication interface

- Added Aux bus support for RoCE.
- Implemented the ulp ops that are required by RoCE driver.
- Restructure context memory data structures
- DBR pacin

bnxt_en: L2-RoCE driver communication interface

- Added Aux bus support for RoCE.
- Implemented the ulp ops that are required by RoCE driver.
- Restructure context memory data structures
- DBR pacing support

Reviewed by: imp
Approved by: imp
Differential revision: https://reviews.freebsd.org/D45006

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bnxt_en: Add PFC, ETS & App TLVs protocols support

Created new directory "bnxt_en" in /dev/bnxt and /modules/bnxt
and moved source files and Makefile into respective directory.

ETS support:

- A

bnxt_en: Add PFC, ETS & App TLVs protocols support

Created new directory "bnxt_en" in /dev/bnxt and /modules/bnxt
and moved source files and Makefile into respective directory.

ETS support:

- Added new files bnxt_dcb.c & bnxt_dcb.h
- Added sysctl node 'dcb' and created handlers 'ets' and
'dcbx_cap'
- Add logic to validate user input and configure ETS in
the firmware
- Updated makefile to include bnxt_dcb.c & bnxt_dcb.h

PFC support:

- Created sysctl handlers 'pfc' under node 'dcb'
- Added logic to validate user input and configure PFC in
the firmware.

App TLV support:

- Created 3 new sysctl handlers under node 'dcb'
- set_apptlv (write only): Sets a specified TLV
- del_apptlv (write only): Deletes a specified TLV
- list_apptlv (read only): Lists all APP TLVs configured
- Added logic to validate user input and configure APP TLVs
in the firmware.

Added Below DCB ops for management interface:

- Set PFC, Get PFC, Set ETS, Get ETS, Add App_TLV, Del App_TLV
Lst App_TLV

Reviewed by: imp
Approved by: imp
Differential revision: https://reviews.freebsd.org/D45005

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