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Date: Fri, 28 Oct 2022 15:50:53 +0800
From: Haoyue Xu <xuhaoyue1@...ilicon.com>
To: <jgg@...dia.com>, <leon@...nel.org>, <zyjzyj2000@...il.com>
CC: <linux-rdma@...r.kernel.org>, <linuxarm@...wei.com>,
<linux-kernel@...r.kernel.org>, <xuhaoyue1@...ilicon.com>
Subject: [PATCH v2 for-next] RDMA/rxe: cleanup some error handling in rxe_verbs.c
From: Yunsheng Lin <linyunsheng@...wei.com>
Instead of 'goto and return', just return directly to
simplify the error handling, and avoid some unnecessary
return value check.
Signed-off-by: Yunsheng Lin <linyunsheng@...wei.com>
Signed-off-by: Haoyue Xu <xuhaoyue1@...ilicon.com>
---
Changes since v1:
Rebased to fix some conflict in the patch.
drivers/infiniband/sw/rxe/rxe_verbs.c | 80 ++++++++-------------------
1 file changed, 23 insertions(+), 57 deletions(-)
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c
index 88825edc7dce..3bc0448f56de 100644
--- a/drivers/infiniband/sw/rxe/rxe_verbs.c
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.c
@@ -238,7 +238,6 @@ static int rxe_destroy_ah(struct ib_ah *ibah, u32 flags)
static int post_one_recv(struct rxe_rq *rq, const struct ib_recv_wr *ibwr)
{
- int err;
int i;
u32 length;
struct rxe_recv_wqe *recv_wqe;
@@ -246,15 +245,11 @@ static int post_one_recv(struct rxe_rq *rq, const struct ib_recv_wr *ibwr)
int full;
full = queue_full(rq->queue, QUEUE_TYPE_TO_DRIVER);
- if (unlikely(full)) {
- err = -ENOMEM;
- goto err1;
- }
+ if (unlikely(full))
+ return -ENOMEM;
- if (unlikely(num_sge > rq->max_sge)) {
- err = -EINVAL;
- goto err1;
- }
+ if (unlikely(num_sge > rq->max_sge))
+ return -EINVAL;
length = 0;
for (i = 0; i < num_sge; i++)
@@ -275,9 +270,6 @@ static int post_one_recv(struct rxe_rq *rq, const struct ib_recv_wr *ibwr)
queue_advance_producer(rq->queue, QUEUE_TYPE_TO_DRIVER);
return 0;
-
-err1:
- return err;
}
static int rxe_create_srq(struct ib_srq *ibsrq, struct ib_srq_init_attr *init,
@@ -343,10 +335,7 @@ static int rxe_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
if (err)
return err;
- err = rxe_srq_from_attr(rxe, srq, attr, mask, &ucmd, udata);
- if (err)
- return err;
- return 0;
+ return rxe_srq_from_attr(rxe, srq, attr, mask, &ucmd, udata);
}
static int rxe_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr)
@@ -453,11 +442,11 @@ static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
err = rxe_qp_chk_attr(rxe, qp, attr, mask);
if (err)
- goto err1;
+ return err;
err = rxe_qp_from_attr(qp, attr, mask, udata);
if (err)
- goto err1;
+ return err;
if ((mask & IB_QP_AV) && (attr->ah_attr.ah_flags & IB_AH_GRH))
qp->src_port = rdma_get_udp_sport(attr->ah_attr.grh.flow_label,
@@ -465,9 +454,6 @@ static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
qp->attr.dest_qp_num);
return 0;
-
-err1:
- return err;
}
static int rxe_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
@@ -501,24 +487,21 @@ static int validate_send_wr(struct rxe_qp *qp, const struct ib_send_wr *ibwr,
struct rxe_sq *sq = &qp->sq;
if (unlikely(num_sge > sq->max_sge))
- goto err1;
+ return -EINVAL;
if (unlikely(mask & WR_ATOMIC_MASK)) {
if (length < 8)
- goto err1;
+ return -EINVAL;
if (atomic_wr(ibwr)->remote_addr & 0x7)
- goto err1;
+ return -EINVAL;
}
if (unlikely((ibwr->send_flags & IB_SEND_INLINE) &&
(length > sq->max_inline)))
- goto err1;
+ return -EINVAL;
return 0;
-
-err1:
- return -EINVAL;
}
static void init_send_wr(struct rxe_qp *qp, struct rxe_send_wr *wr,
@@ -735,14 +718,12 @@ static int rxe_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
if (unlikely((qp_state(qp) < IB_QPS_INIT) || !qp->valid)) {
*bad_wr = wr;
- err = -EINVAL;
- goto err1;
+ return -EINVAL;
}
if (unlikely(qp->srq)) {
*bad_wr = wr;
- err = -EINVAL;
- goto err1;
+ return -EINVAL;
}
spin_lock_irqsave(&rq->producer_lock, flags);
@@ -761,7 +742,6 @@ static int rxe_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
if (qp->resp.state == QP_STATE_ERROR)
rxe_run_task(&qp->resp.task, 1);
-err1:
return err;
}
@@ -826,16 +806,9 @@ static int rxe_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata)
err = rxe_cq_chk_attr(rxe, cq, cqe, 0);
if (err)
- goto err1;
-
- err = rxe_cq_resize_queue(cq, cqe, uresp, udata);
- if (err)
- goto err1;
-
- return 0;
+ return err;
-err1:
- return err;
+ return rxe_cq_resize_queue(cq, cqe, uresp, udata);
}
static int rxe_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
@@ -921,26 +894,22 @@ static struct ib_mr *rxe_reg_user_mr(struct ib_pd *ibpd,
struct rxe_mr *mr;
mr = rxe_alloc(&rxe->mr_pool);
- if (!mr) {
- err = -ENOMEM;
- goto err2;
- }
-
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
rxe_get(pd);
mr->ibmr.pd = ibpd;
err = rxe_mr_init_user(rxe, start, length, iova, access, mr);
if (err)
- goto err3;
+ goto err1;
rxe_finalize(mr);
return &mr->ibmr;
-err3:
+err1:
rxe_cleanup(mr);
-err2:
return ERR_PTR(err);
}
@@ -956,25 +925,22 @@ static struct ib_mr *rxe_alloc_mr(struct ib_pd *ibpd, enum ib_mr_type mr_type,
return ERR_PTR(-EINVAL);
mr = rxe_alloc(&rxe->mr_pool);
- if (!mr) {
- err = -ENOMEM;
- goto err1;
- }
+ if (!mr)
+ return ERR_PTR(-ENOMEM);
rxe_get(pd);
mr->ibmr.pd = ibpd;
err = rxe_mr_init_fast(max_num_sg, mr);
if (err)
- goto err2;
+ goto err1;
rxe_finalize(mr);
return &mr->ibmr;
-err2:
- rxe_cleanup(mr);
err1:
+ rxe_cleanup(mr);
return ERR_PTR(err);
}
--
2.30.0
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