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2024-10-16 50a212ec906f7524620675f0c57357691c26c81f 
 kernel/drivers/infiniband/ulp/opa_vnic/opa_vnic_vema.c
....@@ -51,6 +51,7 @@
5151  */
5252 
5353 #include <linux/module.h>
54
+#include <linux/xarray.h>
5455 #include <rdma/ib_addr.h>
5556 #include <rdma/ib_verbs.h>
5657 #include <rdma/opa_smi.h>
....@@ -58,9 +59,7 @@
5859 
5960 #include "opa_vnic_internal.h"
6061 
61
-#define DRV_VERSION "1.0"
6262 char opa_vnic_driver_name[] = "opa_vnic";
63
-const char opa_vnic_driver_version[] = DRV_VERSION;
6463 
6564 /*
6665  * The trap service level is kept in bits 3 to 7 in the trap_sl_rsvd
....@@ -97,7 +96,7 @@
9796  * @class_port_info: Class port info information.
9897  * @tid: Transaction id
9998  * @port_num: OPA port number
100
- * @vport_idr: vnic ports idr
99
+ * @vports: vnic ports
101100  * @event_handler: ib event handler
102101  * @lock: adapter interface lock
103102  */
....@@ -107,14 +106,14 @@
107106 	struct opa_class_port_info      class_port_info;
108107 	u64                             tid;
109108 	u8                              port_num;
110
-	struct idr                      vport_idr;
109
+	struct xarray                   vports;
111110 	struct ib_event_handler         event_handler;
112111 
113112 	/* Lock to query/update network adapter */
114113 	struct mutex                    lock;
115114 };
116115 
117
-static void opa_vnic_vema_add_one(struct ib_device *device);
116
+static int opa_vnic_vema_add_one(struct ib_device *device);
118117 static void opa_vnic_vema_rem_one(struct ib_device *device,
119118 				  void *client_data);
120119 
....@@ -148,7 +147,7 @@
148147 {
149148 	u8 vport_num = vema_get_vport_num(recvd_mad);
150149 
151
-	return idr_find(&port->vport_idr, vport_num);
150
+	return xa_load(&port->vports, vport_num);
152151 }
153152 
154153 /**
....@@ -207,8 +206,7 @@
207206 		int rc;
208207 
209208 		adapter->cport = cport;
210
-		rc = idr_alloc(&port->vport_idr, adapter, vport_num,
211
-			       vport_num + 1, GFP_NOWAIT);
209
+		rc = xa_insert(&port->vports, vport_num, adapter, GFP_KERNEL);
212210 		if (rc < 0) {
213211 			opa_vnic_rem_netdev(adapter);
214212 			adapter = ERR_PTR(rc);
....@@ -549,7 +547,6 @@
549547 		vema_get_mac_entries(port, recvd_mad, rsp_mad);
550548 		break;
551549 	case OPA_EM_ATTR_IFACE_UCAST_MACS:
552
-		/* fall through */
553550 	case OPA_EM_ATTR_IFACE_MCAST_MACS:
554551 		vema_get_mac_list(port, recvd_mad, rsp_mad, attr_id);
555552 		break;
....@@ -606,7 +603,7 @@
606603 static void vema_send(struct ib_mad_agent *mad_agent,
607604 		      struct ib_mad_send_wc *mad_wc)
608605 {
609
-	rdma_destroy_ah(mad_wc->send_buf->ah);
606
+	rdma_destroy_ah(mad_wc->send_buf->ah, RDMA_DESTROY_AH_SLEEPABLE);
610607 	ib_free_send_mad(mad_wc->send_buf);
611608 }
612609 
....@@ -680,7 +677,7 @@
680677 	ib_free_send_mad(rsp);
681678 
682679 err_rsp:
683
-	rdma_destroy_ah(ah);
680
+	rdma_destroy_ah(ah, RDMA_DESTROY_AH_SLEEPABLE);
684681 free_recv_mad:
685682 	ib_free_recv_mad(mad_wc);
686683 }
....@@ -777,7 +774,7 @@
777774 	}
778775 
779776 	rdma_ah_set_dlid(&ah_attr, trap_lid);
780
-	ah = rdma_create_ah(port->mad_agent->qp->pd, &ah_attr);
777
+	ah = rdma_create_ah(port->mad_agent->qp->pd, &ah_attr, 0);
781778 	if (IS_ERR(ah)) {
782779 		c_err("%s:Couldn't create new AH = %p\n", __func__, ah);
783780 		c_err("%s:dlid = %d, sl = %d, port = %d\n", __func__,
....@@ -848,33 +845,9 @@
848845 	}
849846 
850847 err_sndbuf:
851
-	rdma_destroy_ah(ah);
848
+	rdma_destroy_ah(ah, 0);
852849 err_exit:
853850 	v_err("Aborting trap\n");
854
-}
855
-
856
-static int vema_rem_vport(int id, void *p, void *data)
857
-{
858
-	struct opa_vnic_adapter *adapter = p;
859
-
860
-	opa_vnic_rem_netdev(adapter);
861
-	return 0;
862
-}
863
-
864
-static int vema_enable_vport(int id, void *p, void *data)
865
-{
866
-	struct opa_vnic_adapter *adapter = p;
867
-
868
-	netif_carrier_on(adapter->netdev);
869
-	return 0;
870
-}
871
-
872
-static int vema_disable_vport(int id, void *p, void *data)
873
-{
874
-	struct opa_vnic_adapter *adapter = p;
875
-
876
-	netif_carrier_off(adapter->netdev);
877
-	return 0;
878851 }
879852 
880853 static void opa_vnic_event(struct ib_event_handler *handler,
....@@ -883,17 +856,26 @@
883856 	struct opa_vnic_vema_port *port =
884857 		container_of(handler, struct opa_vnic_vema_port, event_handler);
885858 	struct opa_vnic_ctrl_port *cport = port->cport;
859
+	struct opa_vnic_adapter *adapter;
860
+	unsigned long index;
886861 
887862 	if (record->element.port_num != port->port_num)
888863 		return;
889864 
890865 	c_dbg("OPA_VNIC received event %d on device %s port %d\n",
891
-	      record->event, record->device->name, record->element.port_num);
866
+	      record->event, dev_name(&record->device->dev),
867
+	      record->element.port_num);
892868 
893
-	if (record->event == IB_EVENT_PORT_ERR)
894
-		idr_for_each(&port->vport_idr, vema_disable_vport, NULL);
895
-	if (record->event == IB_EVENT_PORT_ACTIVE)
896
-		idr_for_each(&port->vport_idr, vema_enable_vport, NULL);
869
+	if (record->event != IB_EVENT_PORT_ERR &&
870
+	    record->event != IB_EVENT_PORT_ACTIVE)
871
+		return;
872
+
873
+	xa_for_each(&port->vports, index, adapter) {
874
+		if (record->event == IB_EVENT_PORT_ACTIVE)
875
+			netif_carrier_on(adapter->netdev);
876
+		else
877
+			netif_carrier_off(adapter->netdev);
878
+	}
897879 }
898880 
899881 /**
....@@ -904,6 +886,8 @@
904886  */
905887 static void vema_unregister(struct opa_vnic_ctrl_port *cport)
906888 {
889
+	struct opa_vnic_adapter *adapter;
890
+	unsigned long index;
907891 	int i;
908892 
909893 	for (i = 1; i <= cport->num_ports; i++) {
....@@ -914,13 +898,14 @@
914898 
915899 		/* Lock ensures no MAD is being processed */
916900 		mutex_lock(&port->lock);
917
-		idr_for_each(&port->vport_idr, vema_rem_vport, NULL);
901
+		xa_for_each(&port->vports, index, adapter)
902
+			opa_vnic_rem_netdev(adapter);
918903 		mutex_unlock(&port->lock);
919904 
920905 		ib_unregister_mad_agent(port->mad_agent);
921906 		port->mad_agent = NULL;
922907 		mutex_destroy(&port->lock);
923
-		idr_destroy(&port->vport_idr);
908
+		xa_destroy(&port->vports);
924909 		ib_unregister_event_handler(&port->event_handler);
925910 	}
926911 }
....@@ -957,7 +942,7 @@
957942 				      cport->ibdev, opa_vnic_event);
958943 		ib_register_event_handler(&port->event_handler);
959944 
960
-		idr_init(&port->vport_idr);
945
+		xa_init(&port->vports);
961946 		mutex_init(&port->lock);
962947 		port->mad_agent = ib_register_mad_agent(cport->ibdev, i,
963948 							IB_QPT_GSI, &reg_req,
....@@ -968,7 +953,6 @@
968953 			ret = PTR_ERR(port->mad_agent);
969954 			port->mad_agent = NULL;
970955 			mutex_destroy(&port->lock);
971
-			idr_destroy(&port->vport_idr);
972956 			vema_unregister(cport);
973957 			return ret;
974958 		}
....@@ -1004,18 +988,18 @@
1004988  *
1005989  * Allocate the vnic control port and initialize it.
1006990  */
1007
-static void opa_vnic_vema_add_one(struct ib_device *device)
991
+static int opa_vnic_vema_add_one(struct ib_device *device)
1008992 {
1009993 	struct opa_vnic_ctrl_port *cport;
1010994 	int rc, size = sizeof(*cport);
1011995 
1012996 	if (!rdma_cap_opa_vnic(device))
1013
-		return;
997
+		return -EOPNOTSUPP;
1014998 
1015999 	size += device->phys_port_cnt * sizeof(struct opa_vnic_vema_port);
10161000 	cport = kzalloc(size, GFP_KERNEL);
10171001 	if (!cport)
1018
-		return;
1002
+		return -ENOMEM;
10191003 
10201004 	cport->num_ports = device->phys_port_cnt;
10211005 	cport->ibdev = device;
....@@ -1027,6 +1011,7 @@
10271011 
10281012 	ib_set_client_data(device, &opa_vnic_client, cport);
10291013 	opa_vnic_ctrl_config_dev(cport, true);
1014
+	return 0;
10301015 }
10311016 
10321017 /**
....@@ -1041,9 +1026,6 @@
10411026 {
10421027 	struct opa_vnic_ctrl_port *cport = client_data;
10431028 
1044
-	if (!cport)
1045
-		return;
1046
-
10471029 	c_info("removing VNIC client\n");
10481030 	opa_vnic_ctrl_config_dev(cport, false);
10491031 	vema_unregister(cport);
....@@ -1053,9 +1035,6 @@
10531035 static int __init opa_vnic_init(void)
10541036 {
10551037 	int rc;
1056
-
1057
-	pr_info("OPA Virtual Network Driver - v%s\n",
1058
-		opa_vnic_driver_version);
10591038 
10601039 	rc = ib_register_client(&opa_vnic_client);
10611040 	if (rc)