From: Bob Pearson Date: Thu, 14 Jul 2022 20:46:20 +0000 (-0500) Subject: RDMA/rxe: Fix mw bind to allow any consumer key portion X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=022c8d3f45fc8fbd0242fd49caacb9b86d10f1c8;p=linux.git RDMA/rxe: Fix mw bind to allow any consumer key portion [ Upstream commit 1603f89935ec86d40a7667e1250392626976ccc2 ] The current implementation of rxe_check_bind_mw() in rxe_mw.c is incorrect since it requires the new key portion provided by the mw consumer to be different than the previous key portion. This is not required by the IBA. Remove the test. Link: https://lore.kernel.org/linux-rdma/fb4614e7-4cac-0dc7-3ef7-766dfd10e8f2@gmail.com/ Fixes: 32a577b4c3a9 ("Add support for bind MW work requests") Link: https://lore.kernel.org/r/20220714204619.13396-1-rpearsonhpe@gmail.com Signed-off-by: Bob Pearson Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- diff --git a/drivers/infiniband/sw/rxe/rxe_mw.c b/drivers/infiniband/sw/rxe/rxe_mw.c index a5e2ea7d80f02..933a0b29275b9 100644 --- a/drivers/infiniband/sw/rxe/rxe_mw.c +++ b/drivers/infiniband/sw/rxe/rxe_mw.c @@ -71,8 +71,6 @@ int rxe_dealloc_mw(struct ib_mw *ibmw) static int rxe_check_bind_mw(struct rxe_qp *qp, struct rxe_send_wqe *wqe, struct rxe_mw *mw, struct rxe_mr *mr) { - u32 key = wqe->wr.wr.mw.rkey & 0xff; - if (mw->ibmw.type == IB_MW_TYPE_1) { if (unlikely(mw->state != RXE_MW_STATE_VALID)) { pr_err_once( @@ -110,11 +108,6 @@ static int rxe_check_bind_mw(struct rxe_qp *qp, struct rxe_send_wqe *wqe, } } - if (unlikely(key == (mw->rkey & 0xff))) { - pr_err_once("attempt to bind MW with same key\n"); - return -EINVAL; - } - /* remaining checks only apply to a nonzero MR */ if (!mr) return 0;