[PATCH 5.10 070/157] RDMA/rtrs: Introduce rtrs_post_send

Greg Kroah-Hartman
2021-03-22T12:49:01Z

From: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>

[ Upstream commit e6ab8cf50fa1c38652feba3e4921c60538236f30 ]

Since the three functions share the similar logic, let's introduce one
common function for it.

Link: https://lore.kernel.org/r/20201023074353.21946-12-jinpu.wang@cloud.ionos.com
Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/infiniband/ulp/rtrs/rtrs.c | 52 +++++++++++-------------------
1 file changed, 19 insertions(+), 33 deletions(-)

diff --git a/drivers/infiniband/ulp/rtrs/rtrs.c b/drivers/infiniband/ulp/rtrs/rtrs.c
index 8321e8a52045..97af8f0bb806 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs.c
@@ -104,6 +104,22 @@ int rtrs_post_recv_empty(struct rtrs_con *con, struct ib_cqe *cqe)
}
EXPORT_SYMBOL_GPL(rtrs_post_recv_empty);

+static int rtrs_post_send(struct ib_qp *qp, struct ib_send_wr *head,
+ struct ib_send_wr *wr)
+{
+ if (head) {
+ struct ib_send_wr *tail = head;
+
+ while (tail->next)
+ tail = tail->next;
+ tail->next = wr;
+ } else {
+ head = wr;
+ }
+
+ return ib_post_send(qp, head, NULL);
+}
+
int rtrs_iu_post_send(struct rtrs_con *con, struct rtrs_iu *iu, size_t size,
struct ib_send_wr *head)
{
@@ -126,17 +142,7 @@ int rtrs_iu_post_send(struct rtrs_con *con, struct rtrs_iu *iu, size_t size,
.send_flags = IB_SEND_SIGNALED,
};

- if (head) {
- struct ib_send_wr *tail = head;
-
- while (tail->next)
- tail = tail->next;
- tail->next = &wr;
- } else {
- head = &wr;
- }
-
- return ib_post_send(con->qp, head, NULL);
+ return rtrs_post_send(con->qp, head, &wr);
}
EXPORT_SYMBOL_GPL(rtrs_iu_post_send);

@@ -168,17 +174,7 @@ int rtrs_iu_post_rdma_write_imm(struct rtrs_con *con, struct rtrs_iu *iu,
if (WARN_ON(sge[i].length == 0))
return -EINVAL;

- if (head) {
- struct ib_send_wr *tail = head;
-
- while (tail->next)
- tail = tail->next;
- tail->next = &wr.wr;
- } else {
- head = &wr.wr;
- }
-
- return ib_post_send(con->qp, head, NULL);
+ return rtrs_post_send(con->qp, head, &wr.wr);
}
EXPORT_SYMBOL_GPL(rtrs_iu_post_rdma_write_imm);

@@ -195,17 +191,7 @@ int rtrs_post_rdma_write_imm_empty(struct rtrs_con *con, struct ib_cqe *cqe,
.ex.imm_data = cpu_to_be32(imm_data),
};

- if (head) {
- struct ib_send_wr *tail = head;
-
- while (tail->next)
- tail = tail->next;
- tail->next = &wr;
- } else {
- head = &wr;
- }
-
- return ib_post_send(con->qp, head, NULL);
+ return rtrs_post_send(con->qp, head, &wr);
}
EXPORT_SYMBOL_GPL(rtrs_post_rdma_write_imm_empty);

--
2.30.1