[IB] Check port number in ib_query_port()/ib_modify_port()

Check port number before passing query_port or modify_port operations
on to device driver.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index d3cf84e01587..5a6e44976405 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -514,6 +514,12 @@ int ib_query_port(struct ib_device *device,
                   u8 port_num,
                   struct ib_port_attr *port_attr)
 {
+        if (device->node_type == IB_NODE_SWITCH) {
+                if (port_num)
+                        return -EINVAL;
+        } else if (port_num < 1 || port_num > device->phys_port_cnt)
+                return -EINVAL;
+
         return device->query_port(device, port_num, port_attr);
 }
 EXPORT_SYMBOL(ib_query_port);
@@ -583,6 +589,12 @@ int ib_modify_port(struct ib_device *device,
                    u8 port_num, int port_modify_mask,
                    struct ib_port_modify *port_modify)
 {
+        if (device->node_type == IB_NODE_SWITCH) {
+                if (port_num)
+                        return -EINVAL;
+        } else if (port_num < 1 || port_num > device->phys_port_cnt)
+                return -EINVAL;
+
         return device->modify_port(device, port_num, port_modify_mask,
                                    port_modify);
 }