infiniband/core/user_mad.c

107 	struct ib_umad_port  port[0];
112 	struct ib_umad_port    *port;
494 	ah_attr.port_num      = file->port->port_num;
618 	mutex_lock(&file->port->file_mutex);
621 	if (!file->port->ib_dev) {
661 	agent = ib_register_mad_agent(file->port->ib_dev, file->port->port_num,
697 	mutex_unlock(&file->port->file_mutex);
711 	mutex_lock(&file->port->file_mutex);
728 	mutex_unlock(&file->port->file_mutex);
788  *  - the port is added to umad_port[] as the last part of module
794 	struct ib_umad_port *port;
799 	port = umad_port[iminor(inode) - IB_UMAD_MINOR_BASE];
800 	if (port)
801 		kref_get(&port->umad_dev->ref);
804 	if (!port)
807 	mutex_lock(&port->file_mutex);
809 	if (!port->ib_dev) {
816 		kref_put(&port->umad_dev->ref, ib_umad_release_dev);
827 	file->port = port;
831 	list_add_tail(&file->port_list, &port->file_list);
834 	mutex_unlock(&port->file_mutex);
841 	struct ib_umad_device *dev = file->port->umad_dev;
846 	mutex_lock(&file->port->file_mutex);
867 	mutex_unlock(&file->port->file_mutex);
890 	struct ib_umad_port *port;
897 	port = umad_port[iminor(inode) - IB_UMAD_MINOR_BASE - IB_UMAD_MAX_PORTS];
898 	if (port)
899 		kref_get(&port->umad_dev->ref);
902 	if (!port)
906 		if (down_trylock(&port->sm_sem)) {
911 		if (down_interruptible(&port->sm_sem)) {
917 	ret = ib_modify_port(port->ib_dev, port->port_num, 0, &props);
919 		up(&port->sm_sem);
923 	filp->private_data = port;
928 	kref_put(&port->umad_dev->ref, ib_umad_release_dev);
934 	struct ib_umad_port *port = filp->private_data;
940 	mutex_lock(&port->file_mutex);
941 	if (port->ib_dev)
942 		ret = ib_modify_port(port->ib_dev, port->port_num, 0, &props);
943 	mutex_unlock(&port->file_mutex);
945 	up(&port->sm_sem);
947 	kref_put(&port->umad_dev->ref, ib_umad_release_dev);
967 	struct ib_umad_port *port = dev_get_drvdata(dev);
969 	if (!port)
972 	return sprintf(buf, "%s\n", port->ib_dev->name);
979 	struct ib_umad_port *port = dev_get_drvdata(dev);
981 	if (!port)
984 	return sprintf(buf, "%d\n", port->port_num);
986 static DEVICE_ATTR(port, S_IRUGO, show_port, NULL);
995 			     struct ib_umad_port *port)
998 	port->dev_num = find_first_zero_bit(dev_map, IB_UMAD_MAX_PORTS);
999 	if (port->dev_num >= IB_UMAD_MAX_PORTS) {
1003 	set_bit(port->dev_num, dev_map);
1006 	port->ib_dev   = device;
1007 	port->port_num = port_num;
1008 	init_MUTEX(&port->sm_sem);
1009 	mutex_init(&port->file_mutex);
1010 	INIT_LIST_HEAD(&port->file_list);
1012 	port->cdev = cdev_alloc();
1013 	if (!port->cdev)
1015 	port->cdev->owner = THIS_MODULE;
1016 	port->cdev->ops   = &umad_fops;
1017 	kobject_set_name(&port->cdev->kobj, "umad%d", port->dev_num);
1018 	if (cdev_add(port->cdev, base_dev + port->dev_num, 1))
1021 	port->dev = device_create(umad_class, device->dma_device,
1022 				  port->cdev->dev, port,
1023 				  "umad%d", port->dev_num);
1024 	if (IS_ERR(port->dev))
1027 	if (device_create_file(port->dev, &dev_attr_ibdev))
1029 	if (device_create_file(port->dev, &dev_attr_port))
1032 	port->sm_cdev = cdev_alloc();
1033 	if (!port->sm_cdev)
1035 	port->sm_cdev->owner = THIS_MODULE;
1036 	port->sm_cdev->ops   = &umad_sm_fops;
1037 	kobject_set_name(&port->sm_cdev->kobj, "issm%d", port->dev_num);
1038 	if (cdev_add(port->sm_cdev, base_dev + port->dev_num + IB_UMAD_MAX_PORTS, 1))
1041 	port->sm_dev = device_create(umad_class, device->dma_device,
1042 				     port->sm_cdev->dev, port,
1043 				     "issm%d", port->dev_num);
1044 	if (IS_ERR(port->sm_dev))
1047 	if (device_create_file(port->sm_dev, &dev_attr_ibdev))
1049 	if (device_create_file(port->sm_dev, &dev_attr_port))
1053 	umad_port[port->dev_num] = port;
1059 	device_destroy(umad_class, port->sm_cdev->dev);
1062 	cdev_del(port->sm_cdev);
1065 	device_destroy(umad_class, port->cdev->dev);
1068 	cdev_del(port->cdev);
1069 	clear_bit(port->dev_num, dev_map);
1074 static void ib_umad_kill_port(struct ib_umad_port *port)
1080 	dev_set_drvdata(port->dev,    NULL);
1081 	dev_set_drvdata(port->sm_dev, NULL);
1083 	device_destroy(umad_class, port->cdev->dev);
1084 	device_destroy(umad_class, port->sm_cdev->dev);
1086 	cdev_del(port->cdev);
1087 	cdev_del(port->sm_cdev);
1090 	umad_port[port->dev_num] = NULL;
1093 	mutex_lock(&port->file_mutex);
1095 	port->ib_dev = NULL;
1097 	list_for_each_entry(file, &port->file_list, port_list) {
1108 	mutex_unlock(&port->file_mutex);
1110 	clear_bit(port->dev_num, dev_map);
1140 		umad_dev->port[i - s].umad_dev = umad_dev;
1143 			if (ib_umad_init_port(device, i, &umad_dev->port[i - s]))
1154 			ib_umad_kill_port(&umad_dev->port[i - s]);
1169 			ib_umad_kill_port(&umad_dev->port[i]);