Hi Yishai, This series adds support for completion timestamp. In order to support this feature, several extended verbs were implemented (as instructed in libibverbs). ibv_query_device_ex was extended to support reading the hca_core_clock and timestamp mask. The same verb was extended with vendor dependant data which is used in order to map the HCA's free running clock register. When libmlx4 initializes, it tried to mmap this free running clock register. This mapping is used in order to implement ibv_query_values_ex efficiently. In order to support CQ completion timestmap reporting, we implement ibv_create_cq_ex verb. This verb is used both for creating a CQ which supports timestamp and in order to state which fields should be returned via WC. Returning this data is done via implementing ibv_poll_cq_ex. We query the CQ requested wc_flags for every field the user has requested and populate it according to the carried network operation and WC status. Last but not least, ibv_poll_cq_ex was optimized in order to eliminate the if statements and or operations for common combinations of wc fields. This is done by inlining and using a custom poll_one_ex function for these fields. Thanks, Matan Changes from v0: * Changed patch-set to correct prefix. Matan Barak (7): Add support for extended version of ibv_query_device Add support for ibv_create_cq_ex Implement ibv_poll_cq_ex extension verb Add timestmap support to extended poll_cq verb Add support for ibv_query_values_ex Add support for different poll_one_ex functions Optimize ibv_poll_cq_ex for common scenarios configure.ac | 17 ++ src/cq.c | 512 +++++++++++++++++++++++++++++++++++++++++++++++++++++---- src/mlx4-abi.h | 25 +++ src/mlx4.c | 39 +++++ src/mlx4.h | 64 +++++++- src/verbs.c | 219 +++++++++++++++++++++--- 6 files changed, 823 insertions(+), 53 deletions(-) -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
