Re: [PATCH net-next v11 0/5] net: rnpgbe: Add TX/RX and link status support

[Yibo Dong]

Hi,

Please ignore v11. I found that the In-Reply-To threading is incorrect
starting with patch 2.

I will resend the series with corrected threading (24 hours later).

Thanks,
Dong Yibo

On Fri, Sep 11, 2026 at 07:24:16PM +0800, Dong Yibo wrote:
> Hi maintainers,
> 
> This patch series adds the packet transmission, reception, and link status
> management features to the RNPGBE driver, building upon the previously
> introduced mailbox communication and basic driver infrastructure.
> 
> The series introduces:
> - MSI-X interrupt handling with NAPI support
> - TX path with scatter-gather DMA and completion handling
> - RX path with page pool buffer management
> - unicast/multicast filter.
> - Firmware link-event processing and carrier management
> 
> These changes enable the RNPGBE driver to support basic TX/RX
> network operations.
> 
> ---
> Changelog:
> v10 -> v11:
> [patch 1/5]:
> 1. Drop MSI and single-vector MSI-X support. Require at least two MSI-X
>    vectors, reserving vector 0 for mailbox events and using the remaining
>    vectors for the data path. (Jakub Kicinski)
> 2. Prevent NAPI from re-enabling queue interrupts after the device is down.
> 3. Set the real Tx/Rx queue counts before registering the netdev.
> 4. Preserve the configured Tx/Rx queue counts when tearing down q_vectors.
> [patch 2/5]:
> 1. Treat a Tx DMA timeout as a terminal AXI fault for the current driver
>    instance, and document why Tx cleanup ignores the repeated idle-wait error
>    after the fault is recorded.
> 2. Free q_vectors after an RCU grace period, matching the RCU-protected
>    statistics collection path.
> [patch 3/5]:
> 1. Arm Rx allocation retry timers only after NAPI has been enabled.
> 2. Mask queue interrupts again after disabling NAPI and calling
>    synchronize_net(), preventing a completed poll from re-enabling them
>    during device shutdown.
> 3. Clarify the hardware guarantee for the first RX descriptor length.
> [patch 4/5]:
> 1. Advertise unicast address filtering support to the networking core.
> 2. Program receive filters under the netdev address lock before enabling Rx,
>    and clarify the hardware multicast hash calculation.
> 3. Clear the RAR valid bit before changing an address, and set it only after
>    the complete new address has been written.
> [patch 5/5]:
> 1. Quiesce Tx DMA before notifying firmware that the port is down.
> 2. Remove the stale mailbox-event boolean return value and document why a
>    failed mailbox read is not retried as transient lock contention.
> 3. Document the firmware link-event retry rate and mailbox ACK protocol.
> 
> Links:
> v1:  https://lore.kernel.org/netdev/20260325091204.94015-1-dong100@xxxxxxxxx/
> v2:  https://lore.kernel.org/netdev/20260403025713.527841-1-dong100@xxxxxxxxx/
> v3:  https://lore.kernel.org/netdev/20260507081539.171844-1-dong100@xxxxxxxxx/
> v4:  https://lore.kernel.org/netdev/20260526033539.164061-1-dong100@xxxxxxxxx/
> v5:  https://lore.kernel.org/netdev/20260528023150.239532-1-dong100@xxxxxxxxx/
> v6:  https://lore.kernel.org/netdev/20260604112750.769215-1-dong100@xxxxxxxxx/
> v7:  https://lore.kernel.org/netdev/20260611100036.36370-1-dong100@xxxxxxxxx/
> v8:  https://lore.kernel.org/netdev/20260731120322.895955-1-dong100@xxxxxxxxx/
> v9:  https://lore.kernel.org/netdev/20260814111317.1741087-1-dong100@xxxxxxxxx/
> v10: https://lore.kernel.org/netdev/F44E6669E6C9E7C4+20260831073608.401988-2-dong100@xxxxxxxxx/
> 
> ---
> 
> Dong Yibo (5):
>   net: rnpgbe: Add interrupt handling
>   net: rnpgbe: Add basic TX packet transmission support
>   net: rnpgbe: Add RX packet reception support
>   net: rnpgbe: Add receive mode support
>   net: rnpgbe: Add link status handling support
> 
>  drivers/net/ethernet/mucse/Kconfig            |    1 +
>  drivers/net/ethernet/mucse/rnpgbe/Makefile    |    3 +-
>  drivers/net/ethernet/mucse/rnpgbe/rnpgbe.h    |  201 +-
>  .../net/ethernet/mucse/rnpgbe/rnpgbe_chip.c   |  118 +-
>  drivers/net/ethernet/mucse/rnpgbe/rnpgbe_hw.h |   43 +
>  .../net/ethernet/mucse/rnpgbe/rnpgbe_lib.c    | 2248 +++++++++++++++++
>  .../net/ethernet/mucse/rnpgbe/rnpgbe_lib.h    |   84 +
>  .../net/ethernet/mucse/rnpgbe/rnpgbe_main.c   |  158 +-
>  .../net/ethernet/mucse/rnpgbe/rnpgbe_mbx.c    |   32 +-
>  .../net/ethernet/mucse/rnpgbe/rnpgbe_mbx.h    |    1 +
>  .../net/ethernet/mucse/rnpgbe/rnpgbe_mbx_fw.c |  235 ++
>  .../net/ethernet/mucse/rnpgbe/rnpgbe_mbx_fw.h |   43 +
>  12 files changed, 3138 insertions(+), 29 deletions(-)
>  create mode 100644 drivers/net/ethernet/mucse/rnpgbe/rnpgbe_lib.c
>  create mode 100644 drivers/net/ethernet/mucse/rnpgbe/rnpgbe_lib.h
> 
> -- 
> 2.50.1
>