This addresses a specific mlx4 issue where the max_sge_rd is actually smaller than max_sge (rdma reads with max_sge entries completes with error). The second patch removes the explicit work-around from the iser target code. Changes from v1: - Fixed driver rdma segment size to be 16 bytes Changes from v0: - Used a dedicated enumeration MLX4_MAX_SGE_RD and added a root cause analysis to patch change log. - Fixed isert qp creation to be max_sge but construct rdma work request with the minimum of max_sge and max_sge_rd as non-rdma sends (login rsp) take 2 sges (and some devices have max_sge_rd = 1. Sagi Grimberg (2): mlx4: Expose correct max_sge_rd limit iser-target: Remove explicit mlx4 work-around drivers/infiniband/hw/mlx4/main.c | 2 +- drivers/infiniband/ulp/isert/ib_isert.c | 13 +++---------- include/linux/mlx4/device.h | 11 +++++++++++ 3 files changed, 15 insertions(+), 11 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe target-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
