net: airoha: Add the capability to consume out-of-order DMA tx descriptors

Browse source

EN7581 and AN7583 SoCs are capable of DMA mapping non-linear tx skbs on
non-consecutive DMA descriptors. This feature is useful when multiple
flows are queued on the same hw tx queue since it allows to fully utilize
the available tx DMA descriptors and to avoid the starvation of
high-priority flow we have in the current codebase due to head-of-line
blocking introduced by low-priority flows.

Tested-by: Xuegang Lu <xuegang.lu@airoha.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20251106-airoha-tx-linked-list-v2-1-0706d4a322bd@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

Lorenzo Bianconi 2025-11-06 13:53:23 +01:00 • committed by Jakub Kicinski

parent 416dd649f3

commit 3f47e67dff

2 changed files with 45 additions and 47 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

85

drivers/net/ethernet/airoha/airoha_eth.c

View file

7

drivers/net/ethernet/airoha/airoha_eth.h

View file