Armen Ratner 8b0587a885 net/mlx5e: Preserve shared buffer capacity during headroom updates ... When port buffer headroom changes, port_update_shared_buffer() recalculates the shared buffer size and splits it in a 3:1 ratio (lossy:lossless) - Currently, the calculation is: lossless = shared / 4; lossy = (shared / 4) * 3; Meaning, the calculation dropped the remainder of shared % 4 due to integer division, unintentionally reducing the total shared buffer by up to three cells on each update. Over time, this could shrink the buffer below usable size. Fix it by changing the calculation to: lossless = shared / 4; lossy = shared - lossless; This retains all buffer cells while still approximating the intended 3:1 split, preventing capacity loss over time. While at it, perform headroom calculations in units of cells rather than in bytes for more accurate calculations avoiding extra divisions. Fixes: a440030d89 ("net/mlx5e: Update shared buffer along with device buffer changes") Signed-off-by: Armen Ratner <armeng@nvidia.com> Signed-off-by: Maher Sanalla <msanalla@nvidia.com> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Alexei Lazar <alazar@nvidia.com> Signed-off-by: Mark Bloch <mbloch@nvidia.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Link: https://patch.msgid.link/20250820133209.389065-9-mbloch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2025-08-21 07:58:33 -07:00
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mlx4	Networking changes for 6.17.	2025-07-30 08:58:55 -07:00
mlx5/core	net/mlx5e: Preserve shared buffer capacity during headroom updates	2025-08-21 07:58:33 -07:00
mlxbf_gige	mlxbf_gige: emit messages during open and probe failures	2025-07-07 18:34:46 -07:00
mlxfw	net/mlxfw: Drop hard coded max FW flash image size	2025-01-17 19:01:07 -08:00
mlxsw	mlxsw: spectrum: Forward packets with an IPv4 link-local source IP	2025-08-15 10:44:48 -07:00
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