From: Kamal Heib <kamalheib1@gmail.com>
Date: Mon, 28 Oct 2019 17:59:28 +0200
Subject: RDMA/core: Fix return code when modify_port isn't supported
Patch-mainline: v5.5-rc1
Git-commit: 55bfe905fa97633438c13fb029aed85371d85480
References: jsc#SLE-8449
Improve return code from ib_modify_port() by doing the following:
- Use "-EOPNOTSUPP" instead "-ENOSYS" which is the proper return code
- Allow only fake IB_PORT_CM_SUP manipulation for RoCE providers that
didn't implement the modify_port callback, otherwise return
"-EOPNOTSUPP"
Fixes: 61e0962d5221 ("IB: Avoid ib_modify_port() failure for RoCE devices")
Link: https://lore.kernel.org/r/20191028155931.1114-2-kamalheib1@gmail.com
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/core/device.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -2408,8 +2408,12 @@ int ib_modify_port(struct ib_device *dev
rc = device->ops.modify_port(device, port_num,
port_modify_mask,
port_modify);
+ else if (rdma_protocol_roce(device, port_num) &&
+ ((port_modify->set_port_cap_mask & ~IB_PORT_CM_SUP) == 0 ||
+ (port_modify->clr_port_cap_mask & ~IB_PORT_CM_SUP) == 0))
+ rc = 0;
else
- rc = rdma_protocol_roce(device, port_num) ? 0 : -ENOSYS;
+ rc = -EOPNOTSUPP;
return rc;
}
EXPORT_SYMBOL(ib_modify_port);