[ofa-general] [PATCH v2 0/4] generic perf query/reset api plus PortXmtDataSL/PortRcvDataSL impl

[Or Gerlitz]

Following the comments from the initial version, this patch series first
exports a generic libibmad api to issue query and reset on performance
counters and then implements PortXmtDataSL and PortRcvDataSL.

Or.