+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:cindent:
- *
- * Copyright (C) 2003 High Performance Computing Center North (HPC2N)
- * Author: Niklas Edmundsson <nikke@hpc2n.umu.se>
-
- * Based on gmnal, which is based on ksocknal and qswnal
- *
- * This file is part of Portals, http://www.sf.net/projects/lustre/
- *
- * Portals is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * Portals is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Portals; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-
-#include "scimacnal.h"
-
-nal_t kscimacnal_api;
-
-kscimacnal_data_t kscimacnal_data;
-
-kpr_nal_interface_t kscimacnal_router_interface = {
- kprni_nalid: SCIMACNAL,
- kprni_arg: NULL,
- kprni_fwd: kscimacnal_fwd_packet,
-};
-
-
-int kscimacnal_cmd (struct portal_ioctl_data *data, void *private)
-{
- LASSERT (data != NULL);
-
- switch (data->ioc_nal_cmd) {
- case NAL_CMD_REGISTER_MYNID:
- if(kscimacnal_lib.ni.nid == data->ioc_nid) {
- break;
- }
- CDEBUG (D_IOCTL, "Can't change NID from "LPX64" to "LPX64")\n", kscimacnal_lib.ni.nid, data->ioc_nid);
- return(-EINVAL);
- default:
- return(-EINVAL);
- }
-
- return(0);
-}
-
-static int kscimacnal_forward(nal_t *nal,
- int id,
- void *args, size_t args_len,
- void *ret, size_t ret_len)
-{
- kscimacnal_data_t *ksci = nal->nal_data;
- nal_cb_t *nal_cb = ksci->ksci_cb;
-
- LASSERT (nal == &kscimacnal_api);
- LASSERT (ksci == &kscimacnal_data);
- LASSERT (nal_cb == &kscimacnal_lib);
-
- lib_dispatch(nal_cb, ksci, id, args, ret); /* nal needs ksci */
- return PTL_OK;
-}
-
-
-static void kscimacnal_lock(nal_t *nal, unsigned long *flags)
-{
- kscimacnal_data_t *ksci = nal->nal_data;
- nal_cb_t *nal_cb = ksci->ksci_cb;
-
-
- LASSERT (nal == &kscimacnal_api);
- LASSERT (ksci == &kscimacnal_data);
- LASSERT (nal_cb == &kscimacnal_lib);
-
- nal_cb->cb_cli(nal_cb,flags);
-}
-
-
-static void kscimacnal_unlock(nal_t *nal, unsigned long *flags)
-{
- kscimacnal_data_t *ksci = nal->nal_data;
- nal_cb_t *nal_cb = ksci->ksci_cb;
-
-
- LASSERT (nal == &kscimacnal_api);
- LASSERT (ksci == &kscimacnal_data);
- LASSERT (nal_cb == &kscimacnal_lib);
-
- nal_cb->cb_sti(nal_cb,flags);
-}
-
-
-static void kscimacnal_shutdown(nal_t *nal, int ni)
-{
- LASSERT (nal == &kscimacnal_api);
- LASSERT (kscimacnal_data.ksci_init);
-
- if (nal->nal_refct != 0)
- return;
-
- /* Called on last matching PtlNIFini() */
-
- /* FIXME: How should the shutdown procedure really look?
- */
- kscimacnal_data.ksci_shuttingdown=1;
-
- /* Stop handling ioctls */
- libcfs_nal_cmd_unregister(SCIMACNAL);
-
- mac_finish(kscimacnal_data.ksci_machandle);
-
- /* finalise lib after net shuts up */
- lib_fini(&kscimacnal_lib);
-
- kscimacnal_data.ksci_init = 0;
-
- /* Allow unload */
- PORTAL_MODULE_UNUSE;
-
- return;
-}
-
-
-static void kscimacnal_yield( nal_t *nal, unsigned long *flags, int milliseconds )
-{
- LASSERT (nal == &kscimacnal_api);
-
- if (milliseconds != 0) {
- CERROR ("Blocking yield not implemented yet\n");
- LBUG();
- }
-
- if (current->need_resched)
- schedule();
- return;
-}
-
-
-static int kscimacnal_startup(nal_t *nal, ptl_pid_t requested_pid,
- ptl_ni_limits_t *requested_limits,
- ptl_ni_limits_t *actual_limits)
-{
- int rc;
- mac_physaddr_t mac_physaddr;
- ptl_process_id_t process_id;
- mac_handle_t *machandle = NULL;
-
- if (nal->nal_refct != 0) {
- if (actual_limits != NULL)
- *actual_limits = kscimacnal_lib.ni.actual_limits;
- return (PTL_OK);
- }
-
- /* Called on first PtlNIInit(SCIMACNAL) */
-
- LASSERT (nal == kscimacnal_api);
- LASSERT (!kscimacnal_data.ksci_init);
-
- kscimacnal_lib.nal_data = &kscimacnal_data;
-
- memset(&kscimacnal_data, 0, sizeof(kscimacnal_data));
-
- kscimacnal_data.ksci_cb = &kscimacnal_lib;
-
- /* We're not using this, but cli/sti callbacks does... ??? */
- spin_lock_init(&kscimacnal_data.ksci_dispatch_lock);
-
- /* FIXME: We only support one adapter for now */
- machandle = mac_init(0, MAC_SAPID_LUSTRE, kscimacnal_rx,
- &kscimacnal_data);
-
- if(!machandle) {
- CERROR("mac_init() failed\n");
- return PTL_FAIL;
- }
-
- kscimacnal_data.ksci_machandle = machandle;
-
- /* Make sure the scimac MTU is tuned */
- if(mac_get_mtusize(machandle) < SCIMACNAL_MTU) {
- CERROR("scimac mtu of %ld smaller than SCIMACNAL MTU of %d\n",
- mac_get_mtusize(machandle), SCIMACNAL_MTU);
- CERROR("Consult README.scimacnal for more information\n");
- mac_finish(machandle);
- return PTL_FAIL;
- }
-
- /* Get the node ID */
- /* mac_get_physaddrlen() is a function instead of define, sigh */
- LASSERT(mac_get_physaddrlen(machandle) <= sizeof(mac_physaddr));
- if(mac_get_physaddr(machandle, &mac_physaddr)) {
- CERROR("mac_get_physaddr() failed\n");
- mac_finish(machandle);
- return PTL_FAIL;
- }
- kscimacnal_data.ksci_nid = (ptl_nid_t)(ntohl(mac_physaddr));
-
- process_id.pid = 0;
- process_id.nid = kscimacnal_data.ksci_nid;
-
- CDEBUG(D_NET, "calling lib_init with nid "LPX64"\n",
- kscimacnal_data.ksci_nid);
-
- rc = lib_init(&kscimacnal_lib, process_id,
- requested_limits, actual_limits);
- if (rc != PTL_OK) {
- CERROR("PtlNIInit failed %d\n", rc);
- mac_finish(machandle);
- return (rc);
- }
-
- /* Init command interface */
- rc = libcfs_nal_cmd_register (SCIMACNAL, &kscimacnal_cmd, NULL);
- if (rc != 0) {
- CERROR ("Can't initialise command interface (rc = %d)\n", rc);
- lib_fini(&kscimacnal_lib);
- mac_finish(machandle);
- return (PTL_FAIL);
- }
-
- /* We're done now, it's OK for the RX callback to do stuff */
- kscimacnal_data.ksci_init = 1;
-
- /* Prevent unload before matching PtlNIFini() */
- PORTAL_MODULE_USE;
-
- return (PTL_OK);
-}
-
-
-/* Called by kernel at module unload time */
-static void /*__exit*/
-kscimacnal_finalize(void)
-{
- LASSERT (!kscimacnal_data.ksci_init);
-
- ptl_unregister_nal(SCIMACNAL);
-
- CDEBUG (D_MALLOC, "done kmem %d\n", atomic_read (&portal_kmemory));
-
- return;
-}
-
-
-/* Called by kernel at module insertion time */
-static int __init
-kscimacnal_initialize(void)
-{
- int rc;
-
- CDEBUG (D_MALLOC, "start kmem %d\n", atomic_read (&portal_kmemory));
-
- kscimacnal_api.startup = kscimacnal_startup;
- kscimacnal_api.forward = kscimacnal_forward;
- kscimacnal_api.shutdown = kscimacnal_shutdown;
- kscimacnal_api.yield = kscimacnal_yield;
- kscimacnal_api.lock= kscimacnal_lock;
- kscimacnal_api.unlock= kscimacnal_unlock;
- kscimacnal_api.nal_data = &kscimacnal_data;
-
- rc = ptl_register_nal(SCIMACNAL, &kscimacnal_api);
- if (rc != PTL_OK) {
- CERROR("Can't register SCIMACNAL: %d\n", rc);
- return (-ENODEV);
- }
-
- return 0;
-}
-
-
-MODULE_AUTHOR("Niklas Edmundsson <nikke@hpc2n.umu.se>");
-MODULE_DESCRIPTION("Kernel Scali ScaMAC SCI NAL v0.1");
-MODULE_LICENSE("GPL");
-
-module_init (kscimacnal_initialize);
-module_exit (kscimacnal_finalize);
-
-EXPORT_SYMBOL(kscimacnal_ni);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff