#define PORTAL_MINOR 240
-extern void (kping_client)(struct portal_ioctl_data *);
+struct nal_cmd_handler {
+ nal_cmd_handler_fn *nch_handler;
+ void *nch_private;
+};
+
+static struct nal_cmd_handler nal_cmd[NAL_MAX_NR + 1];
+static DECLARE_MUTEX(nal_cmd_sem);
#ifdef PORTAL_DEBUG
void kportal_assertion_failed(char *expr, char *file, const char *func,
PORTAL_FREE(data, len);
}
+int
+libcfs_nal_cmd_register(int nal, nal_cmd_handler_fn *handler, void *private)
+{
+ int rc = 0;
+
+ CDEBUG(D_IOCTL, "Register NAL %d, handler: %p\n", nal, handler);
+
+ if (nal > 0 && nal <= NAL_MAX_NR) {
+ down(&nal_cmd_sem);
+ if (nal_cmd[nal].nch_handler != NULL)
+ rc = -EBUSY;
+ else {
+ nal_cmd[nal].nch_handler = handler;
+ nal_cmd[nal].nch_private = private;
+ }
+ up(&nal_cmd_sem);
+ }
+ return rc;
+}
+EXPORT_SYMBOL(libcfs_nal_cmd_register);
+
+void
+libcfs_nal_cmd_unregister(int nal)
+{
+ CDEBUG(D_IOCTL, "Unregister NAL %d\n", nal);
+
+ LASSERT(nal > 0 && nal <= NAL_MAX_NR);
+ LASSERT(nal_cmd[nal].nch_handler != NULL);
+
+ down(&nal_cmd_sem);
+ nal_cmd[nal].nch_handler = NULL;
+ nal_cmd[nal].nch_private = NULL;
+ up(&nal_cmd_sem);
+}
+EXPORT_SYMBOL(libcfs_nal_cmd_unregister);
+
+int
+libcfs_nal_cmd(struct portals_cfg *pcfg)
+{
+ __u32 nal = pcfg->pcfg_nal;
+ int rc = -EINVAL;
+ ENTRY;
+
+ down(&nal_cmd_sem);
+ if (nal > 0 && nal <= NAL_MAX_NR &&
+ nal_cmd[nal].nch_handler != NULL) {
+ CDEBUG(D_IOCTL, "calling handler nal: %d, cmd: %d\n", nal,
+ pcfg->pcfg_command);
+ rc = nal_cmd[nal].nch_handler(pcfg, nal_cmd[nal].nch_private);
+ }
+ up(&nal_cmd_sem);
+
+ RETURN(rc);
+}
+EXPORT_SYMBOL(libcfs_nal_cmd);
+
static DECLARE_RWSEM(ioctl_list_sem);
static LIST_HEAD(ioctl_list);
err = lwt_control (data->ioc_flags, data->ioc_misc);
break;
- case IOC_PORTAL_LWT_SNAPSHOT:
- err = lwt_snapshot (&data->ioc_nid,
- &data->ioc_count, &data->ioc_misc,
+ case IOC_PORTAL_LWT_SNAPSHOT: {
+ cycles_t now;
+ int ncpu;
+ int total_size;
+
+ err = lwt_snapshot (&now, &ncpu, &total_size,
data->ioc_pbuf1, data->ioc_plen1);
+ data->ioc_nid = now;
+ data->ioc_count = ncpu;
+ data->ioc_misc = total_size;
+
if (err == 0 &&
copy_to_user((char *)arg, data, sizeof (*data)))
err = -EFAULT;
break;
+ }
case IOC_PORTAL_LWT_LOOKUP_STRING:
err = lwt_lookup_string (&data->ioc_count, data->ioc_pbuf1,
err = -EFAULT;
break;
#endif
+ case IOC_PORTAL_NAL_CMD: {
+ struct portals_cfg pcfg;
+
+ if (data->ioc_plen1 != sizeof(pcfg)) {
+ CERROR("Bad ioc_plen1 %d (wanted %d)\n",
+ data->ioc_plen1, sizeof(pcfg));
+ err = -EINVAL;
+ break;
+ }
+
+ if (copy_from_user(&pcfg, (void *)data->ioc_pbuf1,
+ sizeof(pcfg))) {
+ err = -EFAULT;
+ break;
+ }
+
+ CDEBUG (D_IOCTL, "nal command nal %d cmd %d\n", pcfg.pcfg_nal,
+ pcfg.pcfg_command);
+ err = libcfs_nal_cmd(&pcfg);
+
+ if (err == 0 &&
+ copy_to_user((char *)data->ioc_pbuf1, &pcfg,
+ sizeof (pcfg)))
+ err = -EFAULT;
+ break;
+ }
+
case IOC_PORTAL_MEMHOG:
if (!capable (CAP_SYS_ADMIN))
err = -EPERM;