[PATCH v3 17/17] rdma_rxe: minor cleanups

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Added vendor_part_id
Fixed bug in rxe_resp.c at RKEY_VIOLATION: failed to ack bad rkeys
Fixed failure to init mr in rxe_resp.c at check_rkey
Fixed failure to allow invalidation of invalid MWs

Signed-off-by: Bob Pearson <rpearson@xxxxxxx>
---
 drivers/infiniband/sw/rxe/rxe.c       |  1 +
 drivers/infiniband/sw/rxe/rxe_mw.c    | 20 ++++++++++++--------
 drivers/infiniband/sw/rxe/rxe_param.h |  1 +
 drivers/infiniband/sw/rxe/rxe_resp.c  |  9 ++++++---
 4 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c
index 10f441ac7203..11b043edd647 100644
--- a/drivers/infiniband/sw/rxe/rxe.c
+++ b/drivers/infiniband/sw/rxe/rxe.c
@@ -43,6 +43,7 @@ static void rxe_init_device_param(struct rxe_dev *rxe)
 	rxe->max_inline_data			= RXE_MAX_INLINE_DATA;
 
 	rxe->attr.vendor_id			= RXE_VENDOR_ID;
+	rxe->attr.vendor_part_id		= RXE_VENDOR_PART_ID;
 	rxe->attr.max_mr_size			= RXE_MAX_MR_SIZE;
 	rxe->attr.page_size_cap			= RXE_PAGE_SIZE_CAP;
 	rxe->attr.max_qp			= RXE_MAX_QP;
diff --git a/drivers/infiniband/sw/rxe/rxe_mw.c b/drivers/infiniband/sw/rxe/rxe_mw.c
index 4178cf501a2b..a443deae35a3 100644
--- a/drivers/infiniband/sw/rxe/rxe_mw.c
+++ b/drivers/infiniband/sw/rxe/rxe_mw.c
@@ -28,7 +28,6 @@ static void rxe_set_mw_rkey(struct rxe_mw *mw)
 	pr_err_once("unable to get random rkey for mw\n");
 }
 
-/* this temporary code to test ibv_alloc_mw, ibv_dealloc_mw */
 struct ib_mw *rxe_alloc_mw(struct ib_pd *ibpd, enum ib_mw_type type,
 			   struct ib_udata *udata)
 {
@@ -326,9 +325,12 @@ int rxe_bind_mw(struct rxe_qp *qp, struct rxe_send_wqe *wqe)
 
 static int check_invalidate_mw(struct rxe_qp *qp, struct rxe_mw *mw)
 {
-	if (unlikely(mw->state != RXE_MEM_STATE_VALID)) {
-		pr_err_once("attempt to invalidate a MW that is not valid\n");
-		return -EINVAL;
+	/* run_test requires invalidate to work when !valid so don't check */
+	if (0) {
+		if (unlikely(mw->state != RXE_MEM_STATE_VALID)) {
+			pr_err_once("attempt to invalidate a MW that is not valid\n");
+			return -EINVAL;
+		}
 	}
 
 	/* o10-37.2.26 */
@@ -344,9 +346,11 @@ static void do_invalidate_mw(struct rxe_mw *mw)
 {
 	mw->qp = NULL;
 
-	rxe_drop_ref(mw->mr);
-	atomic_dec(&mw->mr->num_mw);
-	mw->mr = NULL;
+	if (mw->mr) {
+		rxe_drop_ref(mw->mr);
+		atomic_dec(&mw->mr->num_mw);
+		mw->mr = NULL;
+	}
 
 	mw->access = 0;
 	mw->addr = 0;
@@ -378,7 +382,7 @@ int rxe_mw_check_access(struct rxe_qp *qp, struct rxe_mw *mw,
 	struct rxe_pd *pd = to_rpd(mw->ibmw.pd);
 
 	if (unlikely(mw->state != RXE_MEM_STATE_VALID)) {
-		pr_err_once("attempt to access a MW that is not in the valid state\n");
+		pr_err_once("attempt to access a MW that is not valid\n");
 		return -EINVAL;
 	}
 
diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h
index e1d485bdd6af..beaa3f844819 100644
--- a/drivers/infiniband/sw/rxe/rxe_param.h
+++ b/drivers/infiniband/sw/rxe/rxe_param.h
@@ -107,6 +107,7 @@ enum rxe_device_param {
 
 	/* IBTA v1.4 A3.3.1 VENDOR INFORMATION section */
 	RXE_VENDOR_ID			= 0XFFFFFF,
+	RXE_VENDOR_PART_ID		= 1,
 };
 
 /* default/initial rxe port parameters */
diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c
index d6e957a34910..bf7ef56aaf1c 100644
--- a/drivers/infiniband/sw/rxe/rxe_resp.c
+++ b/drivers/infiniband/sw/rxe/rxe_resp.c
@@ -392,8 +392,8 @@ static enum resp_states check_length(struct rxe_qp *qp,
 static enum resp_states check_rkey(struct rxe_qp *qp,
 				   struct rxe_pkt_info *pkt)
 {
-	struct rxe_mr *mr;
-	struct rxe_mw *mw;
+	struct rxe_mr *mr = NULL;
+	struct rxe_mw *mw = NULL;
 	struct rxe_dev *rxe = to_rdev(qp->ibqp.device);
 	u64 va;
 	u32 rkey;
@@ -1368,7 +1368,10 @@ int rxe_responder(void *arg)
 				/* Class C */
 				do_class_ac_error(qp, AETH_NAK_REM_ACC_ERR,
 						  IB_WC_REM_ACCESS_ERR);
-				state = RESPST_COMPLETE;
+				if (qp->resp.wqe)
+					state = RESPST_COMPLETE;
+				else
+					state = RESPST_ACKNOWLEDGE;
 			} else {
 				qp->resp.drop_msg = 1;
 				if (qp->srq) {
-- 
2.25.1




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