net/mlx5e: Use pcie_bandwidth_available() to compute bandwidth

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Use the new pci_bandwidth_available() function to calculate maximum
available bandwidth through the PCI chain instead of computing it ourselves
with mlx5e_get_pci_bw().

This is used to detect when the device is capable of more bandwidth than is
available in the current slot.  The driver may adjust compression settings
accordingly.

Note that pci_bandwidth_available() accounts for PCIe encoding overhead, so
it is more accurate than mlx5e_get_pci_bw() was.

Signed-off-by: Tal Gilboa <talgi@mellanox.com>
[bhelgaas: remove mlx5e_get_pci_bw() wrapper altogether]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>

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Tal Gilboa 2018-03-30 09:01:51 -05:00 • committed by Bjorn Helgaas

parent 00c6bcb0d6

commit 33523a3613

1 changed files with 1 additions and 31 deletions

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32

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

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