0B MRs need some tweaks to work correctly with HW. So when writing the TPTE, if the MR length is zero we now do:
1) turn off all permissions 2) set the length to -1 While functionality/capabilities of the MR is the same with these changes, it resolves a dapltest 0B RDMA Read test failure Based on original work by Steve Wise <[email protected]> Signed-off-by: Pramod Kumar <[email protected]> Signed-off-by: Steve Wise <[email protected]> Signed-off-by: Hariprasad Shenai <[email protected]> --- drivers/infiniband/hw/cxgb4/mem.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c index ec7a298..a299ba8 100644 --- a/drivers/infiniband/hw/cxgb4/mem.c +++ b/drivers/infiniband/hw/cxgb4/mem.c @@ -369,9 +369,11 @@ static int register_mem(struct c4iw_dev *rhp, struct c4iw_pd *php, int ret; ret = write_tpt_entry(&rhp->rdev, 0, &stag, 1, mhp->attr.pdid, - FW_RI_STAG_NSMR, mhp->attr.perms, + FW_RI_STAG_NSMR, mhp->attr.len ? + mhp->attr.perms : 0, mhp->attr.mw_bind_enable, mhp->attr.zbva, - mhp->attr.va_fbo, mhp->attr.len, shift - 12, + mhp->attr.va_fbo, mhp->attr.len ? + mhp->attr.len : -1, shift - 12, mhp->attr.pbl_size, mhp->attr.pbl_addr); if (ret) return ret; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
