IB/rxe: improved debug prints & code cleanup

1. Debugging qp state transitions and qp errors in loopback and
multiple QP tests is difficult without qp numbers in debug logs.
This patch adds qp number to important debug logs.

2. Instead of having rxe: prefix in few logs and not having in
few logs, using uniform module name prefix using pr_fmt macro.

3. Code cleanup for various warnings reported by checkpatch for
incomplete unsigned data type, line over 80 characters, return
statements.

Signed-off-by: Parav Pandit <pandit.parav@gmail.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 17 insertions, 14 deletions

diff --git a/drivers/infiniband/sw/rxe/rxe_qp.c b/drivers/infiniband/sw/rxe/rxe_qp.c
index 62c37a5..b8036cf 100644
--- a/drivers/infiniband/sw/rxe/rxe_qp.c
+++ b/drivers/infiniband/sw/rxe/rxe_qp.c
@@ -298,8 +298,8 @@ static int rxe_qp_init_resp(struct rxe_dev *rxe, struct rxe_qp *qp,
 
 		wqe_size = rcv_wqe_size(qp->rq.max_sge);
 
-		pr_debug("max_wr = %d, max_sge = %d, wqe_size = %d\n",
-			 qp->rq.max_wr, qp->rq.max_sge, wqe_size);
+		pr_debug("qp#%d max_wr = %d, max_sge = %d, wqe_size = %d\n",
+			 qp_num(qp), qp->rq.max_wr, qp->rq.max_sge, wqe_size);
 
 		qp->rq.queue = rxe_queue_init(rxe,
 					      &qp->rq.max_wr,
@@ -680,24 +680,27 @@ int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
 	if (mask & IB_QP_RETRY_CNT) {
 		qp->attr.retry_cnt = attr->retry_cnt;
 		qp->comp.retry_cnt = attr->retry_cnt;
-		pr_debug("set retry count = %d\n", attr->retry_cnt);
+		pr_debug("qp#%d set retry count = %d\n", qp_num(qp),
+			 attr->retry_cnt);
 	}
 
 	if (mask & IB_QP_RNR_RETRY) {
 		qp->attr.rnr_retry = attr->rnr_retry;
 		qp->comp.rnr_retry = attr->rnr_retry;
-		pr_debug("set rnr retry count = %d\n", attr->rnr_retry);
+		pr_debug("qp#%d set rnr retry count = %d\n", qp_num(qp),
+			 attr->rnr_retry);
 	}
 
 	if (mask & IB_QP_RQ_PSN) {
 		qp->attr.rq_psn = (attr->rq_psn & BTH_PSN_MASK);
 		qp->resp.psn = qp->attr.rq_psn;
-		pr_debug("set resp psn = 0x%x\n", qp->resp.psn);
+		pr_debug("qp#%d set resp psn = 0x%x\n", qp_num(qp),
+			 qp->resp.psn);
 	}
 
 	if (mask & IB_QP_MIN_RNR_TIMER) {
 		qp->attr.min_rnr_timer = attr->min_rnr_timer;
-		pr_debug("set min rnr timer = 0x%x\n",
+		pr_debug("qp#%d set min rnr timer = 0x%x\n", qp_num(qp),
 			 attr->min_rnr_timer);
 	}
 
@@ -705,7 +708,7 @@ int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
 		qp->attr.sq_psn = (attr->sq_psn & BTH_PSN_MASK);
 		qp->req.psn = qp->attr.sq_psn;
 		qp->comp.psn = qp->attr.sq_psn;
-		pr_debug("set req psn = 0x%x\n", qp->req.psn);
+		pr_debug("qp#%d set req psn = 0x%x\n", qp_num(qp), qp->req.psn);
 	}
 
 	if (mask & IB_QP_PATH_MIG_STATE)
@@ -719,38 +722,38 @@ int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask,
 
 		switch (attr->qp_state) {
 		case IB_QPS_RESET:
-			pr_debug("qp state -> RESET\n");
+			pr_debug("qp#%d state -> RESET\n", qp_num(qp));
 			rxe_qp_reset(qp);
 			break;
 
 		case IB_QPS_INIT:
-			pr_debug("qp state -> INIT\n");
+			pr_debug("qp#%d state -> INIT\n", qp_num(qp));
 			qp->req.state = QP_STATE_INIT;
 			qp->resp.state = QP_STATE_INIT;
 			break;
 
 		case IB_QPS_RTR:
-			pr_debug("qp state -> RTR\n");
+			pr_debug("qp#%d state -> RTR\n", qp_num(qp));
 			qp->resp.state = QP_STATE_READY;
 			break;
 
 		case IB_QPS_RTS:
-			pr_debug("qp state -> RTS\n");
+			pr_debug("qp#%d state -> RTS\n", qp_num(qp));
 			qp->req.state = QP_STATE_READY;
 			break;
 
 		case IB_QPS_SQD:
-			pr_debug("qp state -> SQD\n");
+			pr_debug("qp#%d state -> SQD\n", qp_num(qp));
 			rxe_qp_drain(qp);
 			break;
 
 		case IB_QPS_SQE:
-			pr_warn("qp state -> SQE !!?\n");
+			pr_warn("qp#%d state -> SQE !!?\n", qp_num(qp));
 			/* Not possible from modify_qp. */
 			break;
 
 		case IB_QPS_ERR:
-			pr_debug("qp state -> ERR\n");
+			pr_debug("qp#%d state -> ERR\n", qp_num(qp));
 			rxe_qp_error(qp);
 			break;
 		}