Re: [PATCH net-next V7 0/8] net/mlx4_en: DCB QoS support

From: Amir Vadai <redacted>
Date: Thu,  5 Apr 2012 10:33:23 +0300

DCBX version 802.1qaz is supported.
User Priority (UP) is set in QP context instead of in WQE (QP Work Queue
Element), which means that all traffic from a queue will have the same UP.
UP is also set for untagged traffic to be able to classify such traffic too.

Mapping from sk_prio to User Priority is done by sch_mqprio mapping. Although
confusingly sch_mqprio maps sk_prio to something called TC, it is not related
to DCBX's TC, and is interpreted by mlx4_en driver as UP.

User can set maximal BW for an ETS TC. This could be done by a new optional
attribute added to DCB_ATTR_IEEE called DCBNL DCB_ATTR_IEEE_MAXRATE. It accept
an array of 8 64 bits values, 1 for every ETS TC. Units are in Kbps.

All applied, thanks.

Please double check that all the new locations that reference
ip_tos2prio have a proper dependency on CONFIG_INET.

THanks.