On 04/12/2025 14:21, Chwee-Lin Choong wrote:
The previous 7 KB per queue caused TX unit hangs under heavy
timestamping load. Reducing to 5 KB avoids these hangs and matches
the TSN recommendation in I225/I226 SW User Manual Section 7.5.4.
The 8 KB “freed” by this change is currently unused. This reduction
is not expected to impact throughput, as the i226 is PCIe-limited
for small TSN packets rather than TX-buffer-limited.
Fixes: 0d58cdc902da ("igc: optimize TX packet buffer utilization for TSN mode")
Reported-by: Zdenek Bouska <[email protected]>
Closes:
https://lore.kernel.org/netdev/as1pr10mb5675dbfe7ce5f2a9336abfa4eb...@as1pr10mb5675.eurprd10.prod.outlook.com/
Reviewed-by: Paul Menzel <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Reviewed-by: Aleksandr Loktionov <[email protected]>
Signed-off-by: Chwee-Lin Choong <[email protected]>
---
v1:
https://patchwork.ozlabs.org/project/intel-wired-lan/patch/[email protected]/
changelog:
v1 -> v2
- Elaborated commit message
---
drivers/net/ethernet/intel/igc/igc_defines.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
Tested-by: Avigail Dahan <[email protected]>
