From: Mark Zhang <markz@mellanox.com>
Date: Mon, 16 Sep 2019 10:11:52 +0300
Subject: RDMA/counter: Prevent QP counter manual binding in auto mode
Patch-mainline: v5.5-rc1
Git-commit: 663912a6378a34fd4f43b8d873f0c6c6322d9d0e
References: jsc#SLE-8449

If auto mode is configured, manual counter allocation and QP bind is not
allowed.

Fixes: 1bd8e0a9d0fd ("RDMA/counter: Allow manual mode configuration support")
Link: https://lore.kernel.org/r/20190916071154.20383-3-leon@kernel.org
Signed-off-by: Mark Zhang <markz@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/core/counters.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/core/counters.c
+++ b/drivers/infiniband/core/counters.c
@@ -463,10 +463,15 @@ static struct rdma_counter *rdma_get_cou
 int rdma_counter_bind_qpn(struct ib_device *dev, u8 port,
 			  u32 qp_num, u32 counter_id)
 {
+	struct rdma_port_counter *port_counter;
 	struct rdma_counter *counter;
 	struct ib_qp *qp;
 	int ret;
 
+	port_counter = &dev->port_data[port].port_counter;
+	if (port_counter->mode.mode == RDMA_COUNTER_MODE_AUTO)
+		return -EINVAL;
+
 	qp = rdma_counter_get_qp(dev, qp_num);
 	if (!qp)
 		return -ENOENT;
@@ -503,6 +508,7 @@ err:
 int rdma_counter_bind_qpn_alloc(struct ib_device *dev, u8 port,
 				u32 qp_num, u32 *counter_id)
 {
+	struct rdma_port_counter *port_counter;
 	struct rdma_counter *counter;
 	struct ib_qp *qp;
 	int ret;
@@ -510,9 +516,13 @@ int rdma_counter_bind_qpn_alloc(struct i
 	if (!rdma_is_port_valid(dev, port))
 		return -EINVAL;
 
-	if (!dev->port_data[port].port_counter.hstats)
+	port_counter = &dev->port_data[port].port_counter;
+	if (!port_counter->hstats)
 		return -EOPNOTSUPP;
 
+	if (port_counter->mode.mode == RDMA_COUNTER_MODE_AUTO)
+		return -EINVAL;
+
 	qp = rdma_counter_get_qp(dev, qp_num);
 	if (!qp)
 		return -ENOENT;