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| author | Mohsin Bashir <mohsin.bashr@gmail.com> | 2025-08-13 15:13:18 -0700 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-08-19 10:51:16 +0200 |
| commit | 5213ff086344394ddb586298ad1d408c93406621 (patch) | |
| tree | c1604e91508799320fd55f2dc360283b5dfdaf1a /Documentation/networking | |
| parent | 168deb7b31b2e2f578726093c8a133f8e36c0b86 (diff) | |
| download | linux-next-5213ff086344394ddb586298ad1d408c93406621.tar.gz linux-next-5213ff086344394ddb586298ad1d408c93406621.zip | |
eth: fbnic: Collect packet statistics for XDP
Add support for XDP statistics collection and reporting via rtnl_link
and netdev_queue API.
For XDP programs without frags support, fbnic requires MTU to be less
than the HDS threshold. If an over-sized frame is received, the frame
is dropped and recorded as rx_length_errors reported via ip stats to
highlight that this is an error.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Mohsin Bashir <mohsin.bashr@gmail.com>
Link: https://patch.msgid.link/20250813221319.3367670-9-mohsin.bashr@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'Documentation/networking')
| -rw-r--r-- | Documentation/networking/device_drivers/ethernet/meta/fbnic.rst | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst b/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst index afb8353daefd..fb6559fa4be4 100644 --- a/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst +++ b/Documentation/networking/device_drivers/ethernet/meta/fbnic.rst @@ -160,3 +160,14 @@ behavior and potential performance bottlenecks. credit exhaustion - ``pcie_ob_rd_no_np_cred``: Read requests dropped due to non-posted credit exhaustion + +XDP Length Error: +~~~~~~~~~~~~~~~~~ + +For XDP programs without frags support, fbnic tries to make sure that MTU fits +into a single buffer. If an oversized frame is received and gets fragmented, +it is dropped and the following netlink counters are updated + + - ``rx-length``: number of frames dropped due to lack of fragmentation + support in the attached XDP program + - ``rx-errors``: total number of packets with errors received on the interface |