Add more functionality to BNGE

From:		Bhargava Marreddy <bhargava.marreddy-AT-broadcom.com>
To:		davem-AT-davemloft.net, edumazet-AT-google.com, kuba-AT-kernel.org, pabeni-AT-redhat.com, andrew+netdev-AT-lunn.ch, horms-AT-kernel.org
Subject:		[v8, net-next 00/10] Add more functionality to BNGE
Date:		Fri, 19 Sep 2025 23:17:31 +0530
Message-ID:		<20250919174742.24969-1-bhargava.marreddy@broadcom.com>
Cc:		netdev-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, michael.chan-AT-broadcom.com, pavan.chebbi-AT-broadcom.com, vsrama-krishna.nemani-AT-broadcom.com, vikas.gupta-AT-broadcom.com, Bhargava Marreddy <bhargava.marreddy-AT-broadcom.com>
Archive-link:		Article

Hi,

This patch series adds the infrastructure to make the netdevice
functional. It allocates data structures for core resources,
followed by their initialisation and registration with the firmware.
The core resources include the RX, TX, AGG, CMPL, and NQ rings,
as well as the VNIC. RX/TX functionality will be introduced in the
next patch series to keep this one at a reviewable size.

Changes from:

v7->v8
Addressed comments from Jakub Kicinski
    - Ensured buffer post fails when minimum fill level isn't met. 
      Few functions related to buffer posting got impacted and 
      their return type for error handling.

Addressed comments from Simon Horman:
    - Fixed lack of error return when memory allocation fails.
    - Fixed max_t(int, ...) usage by switching to max() for unsigned data.

Addressed comments from Alok Tiwari
    - Fixed type of the variable ring_type.
    - Made the netdev pointer access more direct.

v6->v7
Addressed comments from Jakub Kicinski:
    - Removed NULL checks that are not applicable to the current patches but
      will be required when additional features are introduced in future.
    - Handled unwinding at a higher level rather than in the deep call stac

v5->v6
Addressed comments from Jakub Kicinski:
    - Add appropriate error handling in several functions
    - Enable device lock for bnge netdev ops

v4->v5
Addressed comments from Alok Tiwari
    - Remove the redundant `size` assignment

v3->v4
Addressed a comment from Jakub Kicinski:
    - To handle the page pool for both RX and AGG rings
    - Use the appropriate page allocation mechanism for the AGG ring
      when PAGE_SIZE is larger

v2->v3
Addressed a comment from Jakub Kicinski: 
    - Changed uses of atomic_t to refcount_t

v1->v2

Addressed warnings and errors in the patch series.

Thanks,

Bhargava Marreddy (10):
  bng_en: make bnge_alloc_ring() self-unwind on failure
  bng_en: Add initial support for RX and TX rings
  bng_en: Add initial support for CP and NQ rings
  bng_en: Introduce VNIC
  bng_en: Initialise core resources
  bng_en: Allocate packet buffers
  bng_en: Allocate stat contexts
  bng_en: Register rings with the firmware
  bng_en: Register default VNIC
  bng_en: Configure default VNIC

 drivers/net/ethernet/broadcom/Kconfig         |    1 +
 drivers/net/ethernet/broadcom/bnge/bnge.h     |   27 +
 .../net/ethernet/broadcom/bnge/bnge_core.c    |   16 +
 drivers/net/ethernet/broadcom/bnge/bnge_db.h  |   34 +
 .../ethernet/broadcom/bnge/bnge_hwrm_lib.c    |  482 ++++
 .../ethernet/broadcom/bnge/bnge_hwrm_lib.h    |   31 +
 .../net/ethernet/broadcom/bnge/bnge_netdev.c  | 2217 +++++++++++++++++
 .../net/ethernet/broadcom/bnge/bnge_netdev.h  |  250 +-
 .../net/ethernet/broadcom/bnge/bnge_resc.c    |    6 +-
 .../net/ethernet/broadcom/bnge/bnge_resc.h    |    2 +
 .../net/ethernet/broadcom/bnge/bnge_rmem.c    |   67 +-
 .../net/ethernet/broadcom/bnge/bnge_rmem.h    |   14 +
 12 files changed, 3140 insertions(+), 7 deletions(-)
 create mode 100644 drivers/net/ethernet/broadcom/bnge/bnge_db.h

-- 
2.47.3