netdev - [PATCH rdma-next 7/8] net/smc: Move to client

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Date:   Mon,  5 Apr 2021 08:49:59 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...dia.com>
Cc:     Parav Pandit <parav@...dia.com>,
        "David S. Miller" <davem@...emloft.net>,
        Dennis Dalessandro <dennis.dalessandro@...nelisnetworks.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Karsten Graul <kgraul@...ux.ibm.com>,
        linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        linux-s390@...r.kernel.org,
        Mike Marciniszyn <mike.marciniszyn@...nelisnetworks.com>,
        netdev@...r.kernel.org, rds-devel@....oracle.com,
        Santosh Shilimkar <santosh.shilimkar@...cle.com>
Subject: [PATCH rdma-next 7/8] net/smc: Move to client_supported callback

From: Parav Pandit <parav@...dia.com>

Use newly introduced client_supported() callback to avoid client
additional if the RDMA device is not of IB type.

Signed-off-by: Parav Pandit <parav@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 net/smc/smc_ib.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/net/smc/smc_ib.c b/net/smc/smc_ib.c
index 6b65c5d1f957..f7186d9d1299 100644
--- a/net/smc/smc_ib.c
+++ b/net/smc/smc_ib.c
@@ -767,6 +767,11 @@ void smc_ib_ndev_change(struct net_device *ndev, unsigned long event)
 	mutex_unlock(&smc_ib_devices.mutex);
 }
 
+static bool smc_client_supported(struct ib_device *ibdev)
+{
+	return ibdev->node_type == RDMA_NODE_IB_CA;
+}
+
 /* callback function for ib_register_client() */
 static int smc_ib_add_dev(struct ib_device *ibdev)
 {
@@ -774,9 +779,6 @@ static int smc_ib_add_dev(struct ib_device *ibdev)
 	u8 port_cnt;
 	int i;
 
-	if (ibdev->node_type != RDMA_NODE_IB_CA)
-		return -EOPNOTSUPP;
-
 	smcibdev = kzalloc(sizeof(*smcibdev), GFP_KERNEL);
 	if (!smcibdev)
 		return -ENOMEM;
@@ -840,6 +842,7 @@ static struct ib_client smc_ib_client = {
 	.name	= "smc_ib",
 	.add	= smc_ib_add_dev,
 	.remove = smc_ib_remove_dev,
+	.is_supported = smc_client_supported,
 };
 
 int __init smc_ib_register_client(void)
-- 
2.30.2