net: ena: Fix xdp drops handling due to multibuf packets

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[ Upstream commit 505b1a88d3 ]

Current xdp code drops packets larger than ENA_XDP_MAX_MTU.
This is an incorrect condition since the problem is not the
size of the packet, rather the number of buffers it contains.

This commit:

1. Identifies and drops XDP multi-buffer packets at the
   beginning of the function.
2. Increases the xdp drop statistic when this drop occurs.
3. Adds a one-time print that such drops are happening to
   give better indication to the user.

Fixes: 838c93dc54 ("net: ena: implement XDP drop support")
Signed-off-by: Arthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: David Arinzon <darinzon@amazon.com>
Link: https://lore.kernel.org/r/20231211062801.27891-3-darinzon@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

David Arinzon 2023-12-11 06:27:59 +00:00 • committed by Greg Kroah-Hartman

parent e312eed27a

commit 2664b56420

1 changed files with 10 additions and 7 deletions

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drivers/net/ethernet/amazon/ena/ena_netdev.c

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