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Landing b_hd_newconfig on HEAD
[fs/lustre-release.git] / lnet / libcfs / module.c
index 55e1935..5e273cb 100644 (file)
 #ifndef EXPORT_SYMTAB
 # define EXPORT_SYMTAB
 #endif
-#define DEBUG_SUBSYSTEM S_PORTALS
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/stat.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/smp_lock.h>
-#include <linux/unistd.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-#include <linux/fs.h>
-#include <linux/stat.h>
-#include <asm/uaccess.h>
-#include <asm/segment.h>
-#include <linux/miscdevice.h>
-
-#include <portals/lib-p30.h>
-#include <portals/p30.h>
-#include <linux/kp30.h>
-#include <linux/portals_compat25.h>
-
-#define PORTAL_MINOR 240
-
-extern void (kping_client)(struct portal_ioctl_data *);
-
-struct nal_cmd_handler {
-        nal_cmd_handler_t nch_handler;
-        void * nch_private;
-};
-
-static struct nal_cmd_handler nal_cmd[NAL_MAX_NR + 1];
-struct semaphore nal_cmd_sem;
-
-#ifdef PORTAL_DEBUG
-void kportal_assertion_failed(char *expr, char *file, const char *func,
-                              const int line)
-{
-        portals_debug_msg(0, D_EMERG, file, func, line, CDEBUG_STACK,
-                          "ASSERTION(%s) failed\n", expr);
-        LBUG_WITH_LOC(file, func, line);
-}
-#endif
+#define DEBUG_SUBSYSTEM S_LNET
 
-void
-kportal_daemonize (char *str) 
-{
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,63))
-        daemonize(str);
-#else
-        daemonize();
-        snprintf (current->comm, sizeof (current->comm), "%s", str);
-#endif
-}
+#include <lnet/lib-lnet.h>
+#include <lnet/lnet.h>
+#include <libcfs/kp30.h>
+#include "tracefile.h"
 
 void
-kportal_memhog_free (struct portals_device_userstate *pdu)
+kportal_memhog_free (struct libcfs_device_userstate *ldu)
 {
-        struct page **level0p = &pdu->pdu_memhog_root_page;
-        struct page **level1p;
-        struct page **level2p;
+        cfs_page_t **level0p = &ldu->ldu_memhog_root_page;
+        cfs_page_t **level1p;
+        cfs_page_t **level2p;
         int           count1;
         int           count2;
-        
+
         if (*level0p != NULL) {
 
-                level1p = (struct page **)page_address(*level0p);
+                level1p = (cfs_page_t **)cfs_page_address(*level0p);
                 count1 = 0;
-                
-                while (count1 < PAGE_SIZE/sizeof(struct page *) &&
+
+                while (count1 < CFS_PAGE_SIZE/sizeof(cfs_page_t *) &&
                        *level1p != NULL) {
 
-                        level2p = (struct page **)page_address(*level1p);
+                        level2p = (cfs_page_t **)cfs_page_address(*level1p);
                         count2 = 0;
-                        
-                        while (count2 < PAGE_SIZE/sizeof(struct page *) &&
+
+                        while (count2 < CFS_PAGE_SIZE/sizeof(cfs_page_t *) &&
                                *level2p != NULL) {
-                                
-                                __free_page(*level2p);
-                                pdu->pdu_memhog_pages--;
+
+                                cfs_free_page(*level2p);
+                                ldu->ldu_memhog_pages--;
                                 level2p++;
                                 count2++;
                         }
-                        
-                        __free_page(*level1p);
-                        pdu->pdu_memhog_pages--;
+
+                        cfs_free_page(*level1p);
+                        ldu->ldu_memhog_pages--;
                         level1p++;
                         count1++;
                 }
-                
-                __free_page(*level0p);
-                pdu->pdu_memhog_pages--;
+
+                cfs_free_page(*level0p);
+                ldu->ldu_memhog_pages--;
 
                 *level0p = NULL;
         }
-        
-        LASSERT (pdu->pdu_memhog_pages == 0);
+
+        LASSERT (ldu->ldu_memhog_pages == 0);
 }
 
 int
-kportal_memhog_alloc (struct portals_device_userstate *pdu, int npages, int flags)
+kportal_memhog_alloc (struct libcfs_device_userstate *ldu, int npages, int flags)
 {
-        struct page **level0p;
-        struct page **level1p;
-        struct page **level2p;
+        cfs_page_t **level0p;
+        cfs_page_t **level1p;
+        cfs_page_t **level2p;
         int           count1;
         int           count2;
-        
-        LASSERT (pdu->pdu_memhog_pages == 0);
-        LASSERT (pdu->pdu_memhog_root_page == NULL);
+
+        LASSERT (ldu->ldu_memhog_pages == 0);
+        LASSERT (ldu->ldu_memhog_root_page == NULL);
 
         if (npages < 0)
                 return -EINVAL;
@@ -144,46 +91,46 @@ kportal_memhog_alloc (struct portals_device_userstate *pdu, int npages, int flag
         if (npages == 0)
                 return 0;
 
-        level0p = &pdu->pdu_memhog_root_page;
-        *level0p = alloc_page(flags);
+        level0p = &ldu->ldu_memhog_root_page;
+        *level0p = cfs_alloc_page(flags);
         if (*level0p == NULL)
                 return -ENOMEM;
-        pdu->pdu_memhog_pages++;
+        ldu->ldu_memhog_pages++;
 
-        level1p = (struct page **)page_address(*level0p);
+        level1p = (cfs_page_t **)cfs_page_address(*level0p);
         count1 = 0;
-        memset(level1p, 0, PAGE_SIZE);
-        
-        while (pdu->pdu_memhog_pages < npages &&
-               count1 < PAGE_SIZE/sizeof(struct page *)) {
+        memset(level1p, 0, CFS_PAGE_SIZE);
 
-                if (signal_pending(current))
+        while (ldu->ldu_memhog_pages < npages &&
+               count1 < CFS_PAGE_SIZE/sizeof(cfs_page_t *)) {
+
+                if (cfs_signal_pending())
                         return (-EINTR);
-                
-                *level1p = alloc_page(flags);
+
+                *level1p = cfs_alloc_page(flags);
                 if (*level1p == NULL)
                         return -ENOMEM;
-                pdu->pdu_memhog_pages++;
+                ldu->ldu_memhog_pages++;
 
-                level2p = (struct page **)page_address(*level1p);
+                level2p = (cfs_page_t **)cfs_page_address(*level1p);
                 count2 = 0;
-                memset(level2p, 0, PAGE_SIZE);
-                
-                while (pdu->pdu_memhog_pages < npages &&
-                       count2 < PAGE_SIZE/sizeof(struct page *)) {
-                        
-                        if (signal_pending(current))
+                memset(level2p, 0, CFS_PAGE_SIZE);
+
+                while (ldu->ldu_memhog_pages < npages &&
+                       count2 < CFS_PAGE_SIZE/sizeof(cfs_page_t *)) {
+
+                        if (cfs_signal_pending())
                                 return (-EINTR);
 
-                        *level2p = alloc_page(flags);
+                        *level2p = cfs_alloc_page(flags);
                         if (*level2p == NULL)
                                 return (-ENOMEM);
-                        pdu->pdu_memhog_pages++;
-                        
+                        ldu->ldu_memhog_pages++;
+
                         level2p++;
                         count2++;
                 }
-                
+
                 level1p++;
                 count1++;
         }
@@ -191,506 +138,195 @@ kportal_memhog_alloc (struct portals_device_userstate *pdu, int npages, int flag
         return 0;
 }
 
-void
-kportal_blockallsigs ()
-{
-        unsigned long  flags;
-
-        SIGNAL_MASK_LOCK(current, flags);
-        sigfillset(&current->blocked);
-        RECALC_SIGPENDING;
-        SIGNAL_MASK_UNLOCK(current, flags);
-}
-
 /* called when opening /dev/device */
-static int kportal_psdev_open(struct inode * inode, struct file * file)
+static int libcfs_psdev_open(unsigned long flags, void *args)
 {
-        struct portals_device_userstate *pdu;
+        struct libcfs_device_userstate *ldu;
         ENTRY;
-        
-        if (!inode)
-                RETURN(-EINVAL);
 
         PORTAL_MODULE_USE;
 
-        PORTAL_ALLOC(pdu, sizeof(*pdu));
-        if (pdu != NULL) {
-                pdu->pdu_memhog_pages = 0;
-                pdu->pdu_memhog_root_page = NULL;
+        LIBCFS_ALLOC(ldu, sizeof(*ldu));
+        if (ldu != NULL) {
+                ldu->ldu_memhog_pages = 0;
+                ldu->ldu_memhog_root_page = NULL;
         }
-        file->private_data = pdu;
-        
+        *(struct libcfs_device_userstate **)args = ldu;
+
         RETURN(0);
 }
 
 /* called when closing /dev/device */
-static int kportal_psdev_release(struct inode * inode, struct file * file)
+static int libcfs_psdev_release(unsigned long flags, void *args)
 {
-        struct portals_device_userstate *pdu;
+        struct libcfs_device_userstate *ldu;
         ENTRY;
 
-        if (!inode)
-                RETURN(-EINVAL);
-
-        pdu = file->private_data;
-        if (pdu != NULL) {
-                kportal_memhog_free(pdu);
-                PORTAL_FREE(pdu, sizeof(*pdu));
+        ldu = (struct libcfs_device_userstate *)args;
+        if (ldu != NULL) {
+                kportal_memhog_free(ldu);
+                LIBCFS_FREE(ldu, sizeof(*ldu));
         }
-        
+
         PORTAL_MODULE_UNUSE;
         RETURN(0);
 }
 
-static inline void freedata(void *data, int len)
-{
-        PORTAL_FREE(data, len);
-}
-
-static int
-kportal_add_route(int gateway_nalid, ptl_nid_t gateway_nid, 
-                  ptl_nid_t lo_nid, ptl_nid_t hi_nid)
-{
-        int rc;
-        kpr_control_interface_t *ci;
-
-        ci = (kpr_control_interface_t *) PORTAL_SYMBOL_GET (kpr_control_interface);
-        if (ci == NULL)
-                return (-ENODEV);
-
-        rc = ci->kprci_add_route (gateway_nalid, gateway_nid, lo_nid, hi_nid);
-
-        PORTAL_SYMBOL_PUT(kpr_control_interface);
-        return (rc);
-}
-
-static int
-kportal_del_route(int gw_nalid, ptl_nid_t gw_nid, 
-                  ptl_nid_t lo, ptl_nid_t hi)
-{
-        int rc;
-        kpr_control_interface_t *ci;
-
-        ci = (kpr_control_interface_t *)PORTAL_SYMBOL_GET(kpr_control_interface);
-        if (ci == NULL)
-                return (-ENODEV);
-
-        rc = ci->kprci_del_route (gw_nalid, gw_nid, lo, hi);
-
-        PORTAL_SYMBOL_PUT(kpr_control_interface);
-        return (rc);
-}
-
-static int
-kportal_notify_router (int gw_nalid, ptl_nid_t gw_nid,
-                       int alive, time_t when)
-{
-        int rc;
-        kpr_control_interface_t *ci;
-
-        /* No error if router not preset.  Sysadmin is allowed to notify
-         * _everywhere_ when a NID boots or crashes, even if they know
-         * nothing of the peer. */
-        ci = (kpr_control_interface_t *)PORTAL_SYMBOL_GET(kpr_control_interface);
-        if (ci == NULL)
-                return (0);
-
-        rc = ci->kprci_notify (gw_nalid, gw_nid, alive, when);
-
-        PORTAL_SYMBOL_PUT(kpr_control_interface);
-        return (rc);
-}
-
-static int
-kportal_get_route(int index, __u32 *gateway_nalidp, ptl_nid_t *gateway_nidp,
-                  ptl_nid_t *lo_nidp, ptl_nid_t *hi_nidp, int *alivep)
-{
-        int       gateway_nalid;
-        ptl_nid_t gateway_nid;
-        ptl_nid_t lo_nid;
-        ptl_nid_t hi_nid;
-        int       alive;
-        int       rc;
-        kpr_control_interface_t *ci;
-
-        ci = (kpr_control_interface_t *) PORTAL_SYMBOL_GET(kpr_control_interface);
-        if (ci == NULL)
-                return (-ENODEV);
-
-        rc = ci->kprci_get_route(index, &gateway_nalid, &gateway_nid,
-                                 &lo_nid, &hi_nid, &alive);
-
-        if (rc == 0) {
-                CDEBUG(D_IOCTL, "got route [%d] %d "LPX64":"LPX64" - "LPX64", %s\n",
-                       index, gateway_nalid, gateway_nid, lo_nid, hi_nid,
-                       alive ? "up" : "down");
-
-                *gateway_nalidp = (__u32)gateway_nalid;
-                *gateway_nidp   = gateway_nid;
-                *lo_nidp        = lo_nid;
-                *hi_nidp        = hi_nid;
-                *alivep         = alive;
-        }
-
-        PORTAL_SYMBOL_PUT (kpr_control_interface);
-        return (rc);
-}
-
-static int 
-kportal_router_cmd(struct portals_cfg *pcfg, void * private)
-{
-        int err = -EINVAL;
-        ENTRY;
-
-        switch(pcfg->pcfg_command) {
-        default:
-                CDEBUG(D_IOCTL, "Inappropriate cmd: %d\n", pcfg->pcfg_command);
-                break;
-                
-        case NAL_CMD_ADD_ROUTE:
-                CDEBUG(D_IOCTL, "Adding route: [%d] "LPU64" : "LPU64" - "LPU64"\n",
-                       pcfg->pcfg_nal, pcfg->pcfg_nid, 
-                       pcfg->pcfg_nid2, pcfg->pcfg_nid3);
-                err = kportal_add_route(pcfg->pcfg_gw_nal, pcfg->pcfg_nid,
-                                        pcfg->pcfg_nid2, pcfg->pcfg_nid3);
-                break;
-
-        case NAL_CMD_DEL_ROUTE:
-                CDEBUG (D_IOCTL, "Removing routes via [%d] "LPU64" : "LPU64" - "LPU64"\n",
-                        pcfg->pcfg_gw_nal, pcfg->pcfg_nid, 
-                        pcfg->pcfg_nid2, pcfg->pcfg_nid3);
-                err = kportal_del_route (pcfg->pcfg_gw_nal, pcfg->pcfg_nid,
-                                         pcfg->pcfg_nid2, pcfg->pcfg_nid3);
-                break;
-
-        case NAL_CMD_NOTIFY_ROUTER: {
-                CDEBUG (D_IOCTL, "Notifying peer [%d] "LPU64" %s @ %ld\n",
-                        pcfg->pcfg_gw_nal, pcfg->pcfg_nid,
-                        pcfg->pcfg_flags ? "Enabling" : "Disabling",
-                        (time_t)pcfg->pcfg_nid3);
-                
-                err = kportal_notify_router (pcfg->pcfg_gw_nal, pcfg->pcfg_nid,
-                                             pcfg->pcfg_flags, 
-                                             (time_t)pcfg->pcfg_nid3);
-                break;
-        }
-                
-        case NAL_CMD_GET_ROUTE:
-                CDEBUG (D_IOCTL, "Getting route [%d]\n", pcfg->pcfg_count);
-                err = kportal_get_route(pcfg->pcfg_count, &pcfg->pcfg_gw_nal,
-                                        &pcfg->pcfg_nid, 
-                                        &pcfg->pcfg_nid2, &pcfg->pcfg_nid3,
-                                        &pcfg->pcfg_flags);
-                break;
-        }
-        RETURN(err);
-}
-
-int
-kportal_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) {
-                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);
-}
-
-ptl_handle_ni_t *
-kportal_get_ni (int nal)
-{
-
-        switch (nal)
-        {
-        case QSWNAL:
-                return (PORTAL_SYMBOL_GET(kqswnal_ni));
-        case SOCKNAL:
-                return (PORTAL_SYMBOL_GET(ksocknal_ni));
-        case TOENAL:
-                return  (PORTAL_SYMBOL_GET(ktoenal_ni));
-        case GMNAL:
-                return  (PORTAL_SYMBOL_GET(kgmnal_ni));
-        case IBNAL:
-                return  (PORTAL_SYMBOL_GET(kibnal_ni));
-        case TCPNAL:
-                /* userspace NAL */
-                return (NULL);
-        case SCIMACNAL:
-                return  (PORTAL_SYMBOL_GET(kscimacnal_ni));
-        default:
-                /* A warning to a naive caller */
-                CERROR ("unknown nal: %d\n", nal);
-                return (NULL);
-        }
-}
-
-void
-kportal_put_ni (int nal)
-{
-
-        switch (nal)
-        {
-        case QSWNAL:
-                PORTAL_SYMBOL_PUT(kqswnal_ni);
-                break;
-        case SOCKNAL:
-                PORTAL_SYMBOL_PUT(ksocknal_ni);
-                break;
-        case TOENAL:
-                PORTAL_SYMBOL_PUT(ktoenal_ni);
-                break;
-        case GMNAL:
-                PORTAL_SYMBOL_PUT(kgmnal_ni);
-                break;
-        case IBNAL:
-                PORTAL_SYMBOL_PUT(kibnal_ni);
-                break;
-        case TCPNAL:
-                /* A lesson to a malicious caller */
-                LBUG ();
-        case SCIMACNAL:
-                PORTAL_SYMBOL_PUT(kscimacnal_ni);
-                break;
-        default:
-                CERROR ("unknown nal: %d\n", nal);
-        }
-}
+static struct rw_semaphore ioctl_list_sem;
+static struct list_head ioctl_list;
 
-int
-kportal_nal_register(int nal, nal_cmd_handler_t handler, void * private)
+int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand)
 {
         int rc = 0;
 
-        CDEBUG(D_IOCTL, "Register NAL %d, handler: %p\n", nal, handler);
+        down_write(&ioctl_list_sem);
+        if (!list_empty(&hand->item))
+                rc = -EBUSY;
+        else
+                list_add_tail(&hand->item, &ioctl_list);
+        up_write(&ioctl_list_sem);
 
-        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_register_ioctl);
 
-int
-kportal_nal_unregister(int nal)
+int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand)
 {
         int rc = 0;
 
-        CDEBUG(D_IOCTL, "Unregister NAL %d\n", nal);
+        down_write(&ioctl_list_sem);
+        if (list_empty(&hand->item))
+                rc = -ENOENT;
+        else
+                list_del_init(&hand->item);
+        up_write(&ioctl_list_sem);
 
-        if (nal > 0  && nal <= NAL_MAX_NR) {
-                down(&nal_cmd_sem);
-                nal_cmd[nal].nch_handler = NULL;
-                nal_cmd[nal].nch_private = NULL;
-                up(&nal_cmd_sem);
-        }
         return rc;
 }
+EXPORT_SYMBOL(libcfs_deregister_ioctl);
 
-
-static int kportal_ioctl(struct inode *inode, struct file *file,
-                         unsigned int cmd, unsigned long arg)
+static int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd, void *arg)
 {
-        int err = 0;
-        char buf[1024];
-        struct portal_ioctl_data *data;
-        char str[PTL_NALFMT_SIZE];
-
+        char    buf[1024];
+        int err = -EINVAL;
+        struct libcfs_ioctl_data *data;
         ENTRY;
 
-        if (current->fsuid != 0)
-                RETURN(err = -EACCES);
-
-        if ( _IOC_TYPE(cmd) != IOC_PORTAL_TYPE ||
-             _IOC_NR(cmd) < IOC_PORTAL_MIN_NR  ||
-             _IOC_NR(cmd) > IOC_PORTAL_MAX_NR ) {
-                CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
-                                _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
-                RETURN(-EINVAL);
-        }
+        /* 'cmd' and permissions get checked in our arch-specific caller */
 
-        if (portal_ioctl_getdata(buf, buf + 800, (void *)arg)) {
+        if (libcfs_ioctl_getdata(buf, buf + 800, (void *)arg)) {
                 CERROR("PORTALS ioctl: data error\n");
                 RETURN(-EINVAL);
         }
-
-        data = (struct portal_ioctl_data *)buf;
+        data = (struct libcfs_ioctl_data *)buf;
 
         switch (cmd) {
-        case IOC_PORTAL_SET_DAEMON: 
-                RETURN (portals_debug_set_daemon ( 
-                                        (unsigned int) data->ioc_count,
-                                        (unsigned int) data->ioc_inllen1,
-                                        (char *) data->ioc_inlbuf1,
-                                        (unsigned int) data->ioc_misc)); 
-        case IOC_PORTAL_GET_DEBUG: {
-                __s32 size = portals_debug_copy_to_user(data->ioc_pbuf1,
-                                                        data->ioc_plen1);
-
-                if (size < 0)
-                        RETURN(size);
-
-                data->ioc_size = size;
-                err = copy_to_user((char *)arg, data, sizeof(*data));
-                RETURN(err);
-        }
-        case IOC_PORTAL_CLEAR_DEBUG:
-                portals_debug_clear_buffer();
+        case IOC_LIBCFS_CLEAR_DEBUG:
+                libcfs_debug_clear_buffer();
                 RETURN(0);
-        case IOC_PORTAL_PANIC:
-                if (!capable (CAP_SYS_BOOT))
-                        RETURN (-EPERM);
-                panic("debugctl-invoked panic");
-                RETURN(0);
-        case IOC_PORTAL_MARK_DEBUG:
+        /*
+         * case IOC_LIBCFS_PANIC:
+         * Handled in arch/cfs_module.c
+         */
+        case IOC_LIBCFS_MARK_DEBUG:
                 if (data->ioc_inlbuf1 == NULL ||
                     data->ioc_inlbuf1[data->ioc_inllen1 - 1] != '\0')
                         RETURN(-EINVAL);
-                portals_debug_mark_buffer(data->ioc_inlbuf1);
+                libcfs_debug_mark_buffer(data->ioc_inlbuf1);
                 RETURN(0);
-        case IOC_PORTAL_PING: {
-                void (*ping)(struct portal_ioctl_data *);
-
-                CDEBUG(D_IOCTL, "doing %d pings to nid "LPX64" (%s)\n",
-                       data->ioc_count, data->ioc_nid,
-                       portals_nid2str(data->ioc_nal, data->ioc_nid, str));
-                ping = PORTAL_SYMBOL_GET(kping_client);
-                if (!ping)
-                        CERROR("PORTAL_SYMBOL_GET failed\n");
-                else {
-                        ping(data);
-                        PORTAL_SYMBOL_PUT(kping_client);
-                }
-                RETURN(0);
-        }
-
-        case IOC_PORTAL_GET_NID: {
-                const ptl_handle_ni_t *nip;
-                ptl_process_id_t       pid;
-
-                CDEBUG (D_IOCTL, "Getting nid for nal [%d]\n", data->ioc_nal);
-
-                nip = kportal_get_ni (data->ioc_nal);
-                if (nip == NULL)
-                        RETURN (-EINVAL);
-
-                err = PtlGetId (*nip, &pid);
-                LASSERT (err == PTL_OK);
-                kportal_put_ni (data->ioc_nal);
-
-                data->ioc_nid = pid.nid;
-                if (copy_to_user ((char *)arg, data, sizeof (*data)))
-                        err = -EFAULT;
+#if LWT_SUPPORT
+        case IOC_LIBCFS_LWT_CONTROL:
+                err = lwt_control ((data->ioc_flags & 1) != 0, 
+                                   (data->ioc_flags & 2) != 0);
                 break;
-        }
 
-        case IOC_PORTAL_NAL_CMD: {
-                struct portals_cfg pcfg;
+        case IOC_LIBCFS_LWT_SNAPSHOT: {
+                cycles_t   now;
+                int        ncpu;
+                int        total_size;
 
-                LASSERT (data->ioc_plen1 == sizeof(pcfg));
-                err = copy_from_user(&pcfg, (void *)data->ioc_pbuf1, 
-                                     sizeof(pcfg));
-                if ( err ) {
-                        EXIT;
-                        return err;
-                }
-
-                CDEBUG (D_IOCTL, "nal command nal %d cmd %d\n", pcfg.pcfg_nal,
-                        pcfg.pcfg_command);
-                err = kportal_nal_cmd(&pcfg);
-                if (err == 0) {
-                        if (copy_to_user((char *)data->ioc_pbuf1, &pcfg, 
-                                         sizeof (pcfg)))
-                                err = -EFAULT;
-                        if (copy_to_user((char *)arg, data, sizeof (*data)))
-                                err = -EFAULT;
-                }
-                break;
-        }
-        case IOC_PORTAL_FAIL_NID: {
-                const ptl_handle_ni_t *nip;
-
-                CDEBUG (D_IOCTL, "fail nid: [%d] "LPU64" count %d\n",
-                        data->ioc_nal, data->ioc_nid, data->ioc_count);
+                err = lwt_snapshot (&now, &ncpu, &total_size,
+                                    data->ioc_pbuf1, data->ioc_plen1);
+                data->ioc_u64[0] = now;
+                data->ioc_u32[0] = ncpu;
+                data->ioc_u32[1] = total_size;
 
-                nip = kportal_get_ni (data->ioc_nal);
-                if (nip == NULL)
-                        return (-EINVAL);
+                /* Hedge against broken user/kernel typedefs (e.g. cycles_t) */
+                data->ioc_u32[2] = sizeof(lwt_event_t);
+                data->ioc_u32[3] = offsetof(lwt_event_t, lwte_where);
 
-                err = PtlFailNid (*nip, data->ioc_nid, data->ioc_count);
-                kportal_put_ni (data->ioc_nal);
-                break;
-        }
-#if LWT_SUPPORT
-        case IOC_PORTAL_LWT_CONTROL: 
-                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,
-                                    data->ioc_pbuf1, data->ioc_plen1);
                 if (err == 0 &&
-                    copy_to_user((char *)arg, data, sizeof (*data)))
+                    libcfs_ioctl_popdata(arg, data, sizeof (*data)))
                         err = -EFAULT;
                 break;
-                
-        case IOC_PORTAL_LWT_LOOKUP_STRING:
+        }
+
+        case IOC_LIBCFS_LWT_LOOKUP_STRING:
                 err = lwt_lookup_string (&data->ioc_count, data->ioc_pbuf1,
                                          data->ioc_pbuf2, data->ioc_plen2);
                 if (err == 0 &&
-                    copy_to_user((char *)arg, data, sizeof (*data)))
+                    libcfs_ioctl_popdata(arg, data, sizeof (*data)))
                         err = -EFAULT;
                 break;
 #endif
-        case IOC_PORTAL_MEMHOG:
-                if (!capable (CAP_SYS_ADMIN))
-                        err = -EPERM;
-                else if (file->private_data == NULL) {
+        case IOC_LIBCFS_MEMHOG:
+                if (pfile->private_data == NULL) {
                         err = -EINVAL;
                 } else {
-                        kportal_memhog_free(file->private_data);
-                        err = kportal_memhog_alloc(file->private_data,
+                        kportal_memhog_free(pfile->private_data);
+                        /* XXX The ioc_flags is not GFP flags now, need to be fixed */
+                        err = kportal_memhog_alloc(pfile->private_data,
                                                    data->ioc_count,
                                                    data->ioc_flags);
                         if (err != 0)
-                                kportal_memhog_free(file->private_data);
+                                kportal_memhog_free(pfile->private_data);
                 }
                 break;
 
-        default:
+        case IOC_LIBCFS_PING_TEST: {
+                extern void (kping_client)(struct libcfs_ioctl_data *);
+                void (*ping)(struct libcfs_ioctl_data *);
+
+                CDEBUG(D_IOCTL, "doing %d pings to nid %s (%s)\n",
+                       data->ioc_count, libcfs_nid2str(data->ioc_nid),
+                       libcfs_nid2str(data->ioc_nid));
+                ping = PORTAL_SYMBOL_GET(kping_client);
+                if (!ping)
+                        CERROR("PORTAL_SYMBOL_GET failed\n");
+                else {
+                        ping(data);
+                        PORTAL_SYMBOL_PUT(kping_client);
+                }
+                RETURN(0);
+        }
+
+        default: {
+                struct libcfs_ioctl_handler *hand;
                 err = -EINVAL;
+                down_read(&ioctl_list_sem);
+                list_for_each_entry(hand, &ioctl_list, item) {
+                        err = hand->handle_ioctl(cmd, data);
+                        if (err != -EINVAL) {
+                                if (err == 0)
+                                        err = libcfs_ioctl_popdata(arg, 
+                                                        data, sizeof (*data));
+                                break;
+                        }
+                }
+                up_read(&ioctl_list_sem);
                 break;
         }
+        }
 
         RETURN(err);
 }
 
-
-static struct file_operations portalsdev_fops = {
-        ioctl:   kportal_ioctl,
-        open:    kportal_psdev_open,
-        release: kportal_psdev_release
-};
-
-
-static struct miscdevice portal_dev = {
-        PORTAL_MINOR,
-        "portals",
-        &portalsdev_fops
+struct cfs_psdev_ops libcfs_psdev_ops = {
+        libcfs_psdev_open,
+        libcfs_psdev_release,
+        NULL,
+        NULL,
+        libcfs_ioctl
 };
 
 extern int insert_proc(void);
@@ -699,13 +335,28 @@ MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
 MODULE_DESCRIPTION("Portals v3.1");
 MODULE_LICENSE("GPL");
 
-static int init_kportals_module(void)
+extern cfs_psdev_t libcfs_dev;
+extern struct rw_semaphore tracefile_sem;
+extern struct semaphore trace_thread_sem;
+
+extern void libcfs_init_nidstrings(void);
+extern int libcfs_arch_init(void);
+extern void libcfs_arch_cleanup(void);
+
+static int init_libcfs_module(void)
 {
         int rc;
 
-        rc = portals_debug_init(5 * 1024 * 1024);
+        libcfs_arch_init();
+        libcfs_init_nidstrings();
+        init_rwsem(&tracefile_sem);
+        init_mutex(&trace_thread_sem);
+        init_rwsem(&ioctl_list_sem);
+        CFS_INIT_LIST_HEAD(&ioctl_list);
+
+        rc = libcfs_debug_init(5 * 1024 * 1024);
         if (rc < 0) {
-                printk(KERN_ERR "LustreError: portals_debug_init: %d\n", rc);
+                printk(KERN_ERR "LustreError: libcfs_debug_init: %d\n", rc);
                 return (rc);
         }
 
@@ -716,63 +367,42 @@ static int init_kportals_module(void)
                 goto cleanup_debug;
         }
 #endif
-        sema_init(&nal_cmd_sem, 1);
-
-        rc = misc_register(&portal_dev);
+        rc = cfs_psdev_register(&libcfs_dev);
         if (rc) {
                 CERROR("misc_register: error %d\n", rc);
                 goto cleanup_lwt;
         }
 
-        rc = PtlInit();
-        if (rc) {
-                CERROR("PtlInit: error %d\n", rc);
-                goto cleanup_deregister;
-        }
-
         rc = insert_proc();
         if (rc) {
                 CERROR("insert_proc: error %d\n", rc);
-                goto cleanup_fini;
-        }
-
-        rc = kportal_nal_register(ROUTER, kportal_router_cmd, NULL);
-        if (rc) {
-                CERROR("kportal_nal_registre: ROUTER error %d\n", rc);
-                goto cleanup_proc;
+                goto cleanup_deregister;
         }
 
         CDEBUG (D_OTHER, "portals setup OK\n");
         return (0);
 
- cleanup_proc:
-        remove_proc();
- cleanup_fini:
-        PtlFini();
  cleanup_deregister:
-        misc_deregister(&portal_dev);
+        cfs_psdev_deregister(&libcfs_dev);
  cleanup_lwt:
 #if LWT_SUPPORT
         lwt_fini();
  cleanup_debug:
 #endif
-        portals_debug_cleanup();
+        libcfs_debug_cleanup();
         return rc;
 }
 
-static void exit_kportals_module(void)
+static void exit_libcfs_module(void)
 {
         int rc;
 
-        kportal_nal_unregister(ROUTER);
         remove_proc();
-        PtlFini();
 
         CDEBUG(D_MALLOC, "before Portals cleanup: kmem %d\n",
-               atomic_read(&portal_kmemory));
-
+               atomic_read(&libcfs_kmemory));
 
-        rc = misc_deregister(&portal_dev);
+        rc = cfs_psdev_deregister(&libcfs_dev);
         if (rc)
                 CERROR("misc_deregister error %d\n", rc);
 
@@ -780,61 +410,14 @@ static void exit_kportals_module(void)
         lwt_fini();
 #endif
 
-        if (atomic_read(&portal_kmemory) != 0)
+        if (atomic_read(&libcfs_kmemory) != 0)
                 CERROR("Portals memory leaked: %d bytes\n",
-                       atomic_read(&portal_kmemory));
+                       atomic_read(&libcfs_kmemory));
 
-        rc = portals_debug_cleanup();
+        rc = libcfs_debug_cleanup();
         if (rc)
-                printk(KERN_ERR "LustreError: portals_debug_cleanup: %d\n", rc);
+                printk(KERN_ERR "LustreError: libcfs_debug_cleanup: %d\n", rc);
+        libcfs_arch_cleanup();
 }
 
-EXPORT_SYMBOL(lib_dispatch);
-EXPORT_SYMBOL(PtlMEAttach);
-EXPORT_SYMBOL(PtlMEInsert);
-EXPORT_SYMBOL(PtlMEUnlink);
-EXPORT_SYMBOL(PtlEQAlloc);
-EXPORT_SYMBOL(PtlMDAttach);
-EXPORT_SYMBOL(PtlMDUnlink);
-EXPORT_SYMBOL(PtlNIInit);
-EXPORT_SYMBOL(PtlNIFini);
-EXPORT_SYMBOL(PtlNIDebug);
-EXPORT_SYMBOL(PtlInit);
-EXPORT_SYMBOL(PtlFini);
-EXPORT_SYMBOL(PtlPut);
-EXPORT_SYMBOL(PtlGet);
-EXPORT_SYMBOL(ptl_err_str);
-EXPORT_SYMBOL(portal_subsystem_debug);
-EXPORT_SYMBOL(portal_debug);
-EXPORT_SYMBOL(portal_stack);
-EXPORT_SYMBOL(portal_printk);
-EXPORT_SYMBOL(portal_cerror);
-EXPORT_SYMBOL(PtlEQWait);
-EXPORT_SYMBOL(PtlEQFree);
-EXPORT_SYMBOL(PtlEQGet);
-EXPORT_SYMBOL(PtlGetId);
-EXPORT_SYMBOL(PtlMDBind);
-EXPORT_SYMBOL(lib_iov_nob);
-EXPORT_SYMBOL(lib_copy_iov2buf);
-EXPORT_SYMBOL(lib_copy_buf2iov);
-EXPORT_SYMBOL(lib_kiov_nob);
-EXPORT_SYMBOL(lib_copy_kiov2buf);
-EXPORT_SYMBOL(lib_copy_buf2kiov);
-EXPORT_SYMBOL(lib_finalize);
-EXPORT_SYMBOL(lib_parse);
-EXPORT_SYMBOL(lib_fake_reply_msg);
-EXPORT_SYMBOL(lib_init);
-EXPORT_SYMBOL(lib_fini);
-EXPORT_SYMBOL(portal_kmemory);
-EXPORT_SYMBOL(kportal_daemonize);
-EXPORT_SYMBOL(kportal_blockallsigs);
-EXPORT_SYMBOL(kportal_nal_register);
-EXPORT_SYMBOL(kportal_nal_unregister);
-EXPORT_SYMBOL(kportal_assertion_failed);
-EXPORT_SYMBOL(dispatch_name);
-EXPORT_SYMBOL(kportal_get_ni);
-EXPORT_SYMBOL(kportal_put_ni);
-EXPORT_SYMBOL(kportal_nal_cmd);
-
-module_init(init_kportals_module);
-module_exit (exit_kportals_module);
+cfs_module(libcfs, "1.0.0", init_libcfs_module, exit_libcfs_module);