opa_vnic: Convert vport_idr to XArray

Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/ulp/opa_vnic/opa_vnic_vema.c b/drivers/infiniband/ulp/opa_vnic/opa_vnic_vema.c
index 560e4f2d466e5630033bb1c04107b8f9fd2ab488..76cd09410d9aaf0b4b23ff7cc025b3f8ddff626b 100644 (file)
--- a/drivers/infiniband/ulp/opa_vnic/opa_vnic_vema.c
+++ b/drivers/infiniband/ulp/opa_vnic/opa_vnic_vema.c
@@ -51,6 +51,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/xarray.h>
 #include <rdma/ib_addr.h>
 #include <rdma/ib_verbs.h>
 #include <rdma/opa_smi.h>
@@ -97,7 +98,7 @@ const char opa_vnic_driver_version[] = DRV_VERSION;
  * @class_port_info: Class port info information.
  * @tid: Transaction id
  * @port_num: OPA port number
- * @vport_idr: vnic ports idr
+ * @vports: vnic ports
  * @event_handler: ib event handler
  * @lock: adapter interface lock
  */
@@ -107,7 +108,7 @@ struct opa_vnic_vema_port {
        struct opa_class_port_info      class_port_info;
        u64                             tid;
        u8                              port_num;
-       struct idr                      vport_idr;
+       struct xarray                   vports;
        struct ib_event_handler         event_handler;
 
        /* Lock to query/update network adapter */
@@ -148,7 +149,7 @@ vema_get_vport_adapter(struct opa_vnic_vema_mad *recvd_mad,
 {
        u8 vport_num = vema_get_vport_num(recvd_mad);
 
-       return idr_find(&port->vport_idr, vport_num);
+       return xa_load(&port->vports, vport_num);
 }
 
 /**
@@ -207,8 +208,7 @@ static struct opa_vnic_adapter *vema_add_vport(struct opa_vnic_vema_port *port,
                int rc;
 
                adapter->cport = cport;
-               rc = idr_alloc(&port->vport_idr, adapter, vport_num,
-                              vport_num + 1, GFP_NOWAIT);
+               rc = xa_insert(&port->vports, vport_num, adapter, GFP_KERNEL);
                if (rc < 0) {
                        opa_vnic_rem_netdev(adapter);
                        adapter = ERR_PTR(rc);
@@ -853,36 +853,14 @@ err_exit:
        v_err("Aborting trap\n");
 }
 
-static int vema_rem_vport(int id, void *p, void *data)
-{
-       struct opa_vnic_adapter *adapter = p;
-
-       opa_vnic_rem_netdev(adapter);
-       return 0;
-}
-
-static int vema_enable_vport(int id, void *p, void *data)
-{
-       struct opa_vnic_adapter *adapter = p;
-
-       netif_carrier_on(adapter->netdev);
-       return 0;
-}
-
-static int vema_disable_vport(int id, void *p, void *data)
-{
-       struct opa_vnic_adapter *adapter = p;
-
-       netif_carrier_off(adapter->netdev);
-       return 0;
-}
-
 static void opa_vnic_event(struct ib_event_handler *handler,
                           struct ib_event *record)
 {
        struct opa_vnic_vema_port *port =
                container_of(handler, struct opa_vnic_vema_port, event_handler);
        struct opa_vnic_ctrl_port *cport = port->cport;
+       struct opa_vnic_adapter *adapter;
+       unsigned long index;
 
        if (record->element.port_num != port->port_num)
                return;
@@ -891,10 +869,16 @@ static void opa_vnic_event(struct ib_event_handler *handler,
              record->event, dev_name(&record->device->dev),
              record->element.port_num);
 
-       if (record->event == IB_EVENT_PORT_ERR)
-               idr_for_each(&port->vport_idr, vema_disable_vport, NULL);
-       if (record->event == IB_EVENT_PORT_ACTIVE)
-               idr_for_each(&port->vport_idr, vema_enable_vport, NULL);
+       if (record->event != IB_EVENT_PORT_ERR ||
+           record->event != IB_EVENT_PORT_ACTIVE)
+               return;
+
+       xa_for_each(&port->vports, index, adapter) {
+               if (record->event == IB_EVENT_PORT_ACTIVE)
+                       netif_carrier_on(adapter->netdev);
+               else
+                       netif_carrier_off(adapter->netdev);
+       }
 }
 
 /**
@@ -905,6 +889,8 @@ static void opa_vnic_event(struct ib_event_handler *handler,
  */
 static void vema_unregister(struct opa_vnic_ctrl_port *cport)
 {
+       struct opa_vnic_adapter *adapter;
+       unsigned long index;
        int i;
 
        for (i = 1; i <= cport->num_ports; i++) {
@@ -915,13 +901,14 @@ static void vema_unregister(struct opa_vnic_ctrl_port *cport)
 
                /* Lock ensures no MAD is being processed */
                mutex_lock(&port->lock);
-               idr_for_each(&port->vport_idr, vema_rem_vport, NULL);
+               xa_for_each(&port->vports, index, adapter)
+                       opa_vnic_rem_netdev(adapter);
                mutex_unlock(&port->lock);
 
                ib_unregister_mad_agent(port->mad_agent);
                port->mad_agent = NULL;
                mutex_destroy(&port->lock);
-               idr_destroy(&port->vport_idr);
+               xa_destroy(&port->vports);
                ib_unregister_event_handler(&port->event_handler);
        }
 }
@@ -958,7 +945,7 @@ static int vema_register(struct opa_vnic_ctrl_port *cport)
                                      cport->ibdev, opa_vnic_event);
                ib_register_event_handler(&port->event_handler);
 
-               idr_init(&port->vport_idr);
+               xa_init(&port->vports);
                mutex_init(&port->lock);
                port->mad_agent = ib_register_mad_agent(cport->ibdev, i,
                                                        IB_QPT_GSI, &reg_req,
@@ -969,7 +956,6 @@ static int vema_register(struct opa_vnic_ctrl_port *cport)
                        ret = PTR_ERR(port->mad_agent);
                        port->mad_agent = NULL;
                        mutex_destroy(&port->lock);
-                       idr_destroy(&port->vport_idr);
                        vema_unregister(cport);
                        return ret;
                }