From: David S. Miller Date: Tue, 30 Mar 2021 19:59:25 +0000 (-0700) Subject: Merge tag 'mlx5-updates-2021-03-29' of git://git.kernel.org/pub/scm/linux/kernel... X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=402a66edb9f3e38330859f14bd090ca745059257;p=linux.git Merge tag 'mlx5-updates-2021-03-29' of git://git./linux/kernel/git/saeed/linux Saeed Mahameed says: ==================== mlx5-updates-2021-03-29 Coexistence of CQE compression and HW PTP time-stamp: From Aya this series improves mlx5 netdev driver to allow both mlx5 CQE compression (RX descriptor compression, that saves on PCI transaction) and HW time-stamp PTP to co-exists. Prior to this series both features were mutually exclusive due to the nature of CQE compression which reduces the size of RX descriptor for the price of trimming some data, such as the time-stamp. In order to allow CQE compression when PTP time stamping is enabled, We enable it on the regular performance critical RX queues which will service all the data path traffic that is not PTP. PTP traffic will be re-directed to dedicated RX queues on which we will not enable CQE compression and thus keep the time-stamp intact. Having both features is critical for systems with low PCI BW, e.g. Multi-Host. The series will be adding: 1) Infrastructure to create a dedicated RX queue to service the PTP traffic 2) Flow steering plumbing to capture PTP traffic both UDP packets with destination port 319 and L2 packets with ethertype 0x88F7 3) Steer PTP traffic to the dedicated RX queue. 4) The feature will be enabled when PTP is being configured via the already existing PTP IOCTL when CQE compression is active, otherwise no change to the driver flow. ==================== Signed-off-by: David S. Miller --- 402a66edb9f3e38330859f14bd090ca745059257