kernel/drivers/net/ethernet/broadcom/bnge/Makefile, branch linux-6.18.y

bng_en: Add a network device

2025-07-08T01:54:01Z

Add a network device with netdev features enabled. Some features are enabled based on the capabilities advertised by the firmware. Add the skeleton of minimal netdev operations. Additionally, initialize the parameters for rings (TX/RX/Completion). Signed-off-by: Vikas Gupta Reviewed-by: Bhargava Chenna Marreddy Reviewed-by: Rajashekar Hudumula Link: https://patch.msgid.link/20250701143511.280702-11-vikas.gupta@broadcom.com Signed-off-by: Jakub Kicinski

bng_en: Add resource management support

2025-07-08T01:54:01Z

Get the resources and capabilities from the firmware. Add functions to manage the resources with the firmware. These functions will help netdev reserve the resources with the firmware before registering the device in future patches. The resources and their information, such as the maximum available and reserved, are part of the members present in the bnge_hw_resc struct. The bnge_reserve_rings() function also populates the RSS table entries once the RX rings are reserved with the firmware. Signed-off-by: Vikas Gupta Reviewed-by: Bhargava Chenna Marreddy Reviewed-by: Rajashekar Hudumula Link: https://patch.msgid.link/20250701143511.280702-8-vikas.gupta@broadcom.com Signed-off-by: Jakub Kicinski

bng_en: Add ring memory allocation support

2025-07-08T01:54:00Z

Add ring allocation/free mechanism which help to allocate rings (TX/RX/Completion) and backing stores memory on the host for the device. Future patches will use these functions. Signed-off-by: Vikas Gupta Reviewed-by: Bhargava Chenna Marreddy Reviewed-by: Rajashekar Hudumula Link: https://patch.msgid.link/20250701143511.280702-6-vikas.gupta@broadcom.com Signed-off-by: Jakub Kicinski

bng_en: Add initial interaction with firmware

2025-07-08T01:54:00Z

Query firmware with the help of basic firmware commands and cache the capabilities. With the help of basic commands start the initialization process of the driver with the firmware. Since basic information is available from the firmware, register with devlink. Signed-off-by: Vikas Gupta Reviewed-by: Bhargava Chenna Marreddy Reviewed-by: Rajashekar Hudumula Link: https://patch.msgid.link/20250701143511.280702-5-vikas.gupta@broadcom.com Signed-off-by: Jakub Kicinski

bng_en: Add firmware communication mechanism

2025-07-08T01:54:00Z

Add support to communicate with the firmware. Future patches will use these functions to send the messages to the firmware. Functions support allocating request/response buffers to send a particular command. Each command has certain timeout value to which the driver waits for response from the firmware. In error case, commands may be either timed out waiting on response from the firmware or may return a specific error code. Signed-off-by: Vikas Gupta Reviewed-by: Bhargava Chenna Marreddy Reviewed-by: Rajashekar Hudumula Link: https://patch.msgid.link/20250701143511.280702-4-vikas.gupta@broadcom.com Signed-off-by: Jakub Kicinski

bng_en: Add devlink interface

2025-07-08T01:54:00Z

Allocate a base device and devlink interface with minimal devlink ops. Add dsn and board related information. Map PCIe BAR (bar0), which helps to communicate with the firmware. Signed-off-by: Vikas Gupta Reviewed-by: Bhargava Chenna Marreddy Reviewed-by: Rajashekar Hudumula Link: https://patch.msgid.link/20250701143511.280702-3-vikas.gupta@broadcom.com Signed-off-by: Jakub Kicinski

bng_en: Add PCI interface

2025-07-08T01:54:00Z

Add basic pci interface to the driver which supports the BCM5770X NIC family. Signed-off-by: Vikas Gupta Reviewed-by: Bhargava Chenna Marreddy Reviewed-by: Rajashekar Hudumula Link: https://patch.msgid.link/20250701143511.280702-2-vikas.gupta@broadcom.com Signed-off-by: Jakub Kicinski