[PATCH net 0/4] net: ntb_netdev: Fix TX completion and error handling

[Koichiro Den]

Hi,

This small series fixes several TX buffer ownership and queue handling
bugs in ntb_netdev and ntb_transport.

Patch 4 first appeared in my "NTB: Add direct TX/RX using PCI endpoint
DMA" series. Sashiko later reported the same pre-existing leak while
reviewing another series, so I moved the fix here. See:
https://lore.kernel.org/r/20260815032932.151F11F000E9@xxxxxxxxxxxxxxx/

The ntb_transport fixes affect buffer ownership and queue handling in
ntb_netdev, the only in-tree ntb_transport_client implementation, so the
patches need to go in together. I am targeting the net tree for the
series.

Dave and other NTB maintainers, I would appreciate your review of the
ntb_transport-specific changes.

Best regards,
Koichiro


Koichiro Den (4):
  NTB: ntb_transport: Recycle TX entries before client callbacks
  net: ntb_netdev: Fix TX busy and drop handling
  NTB: ntb_transport: Fail TX enqueue when the QP link is down
  NTB: ntb_transport: Reject oversized TX buffers

 drivers/net/ntb_netdev.c    | 27 ++++++++++++++++++--------
 drivers/ntb/ntb_transport.c | 38 ++++++++++++++++++-------------------
 2 files changed, 37 insertions(+), 28 deletions(-)

base-commit: 24ef02f934eeb48830cff6b739abc3c62b1d107b
-- 
2.51.0