+++ /dev/null
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
- * Copyright (C) 2004 Cluster File Systems, Inc.
- * Author: Eric Barton <eric@bartonsoftware.com>
- *
- * This file is part of Lustre, http://www.lustre.org.
- *
- * Lustre 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.
- *
- * Lustre 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 Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#include "openibnal.h"
-
-nal_t kibnal_api;
-ptl_handle_ni_t kibnal_ni;
-kib_data_t kibnal_data;
-kib_tunables_t kibnal_tunables;
-
-#ifdef CONFIG_SYSCTL
-#define IBNAL_SYSCTL 202
-
-#define IBNAL_SYSCTL_TIMEOUT 1
-
-static ctl_table kibnal_ctl_table[] = {
- {IBNAL_SYSCTL_TIMEOUT, "timeout",
- &kibnal_tunables.kib_io_timeout, sizeof (int),
- 0644, NULL, &proc_dointvec},
- { 0 }
-};
-
-static ctl_table kibnal_top_ctl_table[] = {
- {IBNAL_SYSCTL, "openibnal", NULL, 0, 0555, kibnal_ctl_table},
- { 0 }
-};
-#endif
-
-void
-print_service(struct ib_common_attrib_service *service, char *tag, int rc)
-{
- char name[32];
-
- if (service == NULL)
- {
- CWARN("tag : %s\n"
- "status : %d (NULL)\n", tag, rc);
- return;
- }
- strncpy (name, service->service_name, sizeof(name)-1);
- name[sizeof(name)-1] = 0;
-
- CWARN("tag : %s\n"
- "status : %d\n"
- "service id: "LPX64"\n"
- "name : %s\n"
- "NID : "LPX64"\n", tag, rc,
- service->service_id, name,
- *kibnal_service_nid_field(service));
-}
-
-void
-kibnal_service_setunset_done (tTS_IB_CLIENT_QUERY_TID tid, int status,
- struct ib_common_attrib_service *service, void *arg)
-{
- *(int *)arg = status;
- up (&kibnal_data.kib_nid_signal);
-}
-
-#if IBNAL_CHECK_ADVERT
-void
-kibnal_check_advert (void)
-{
- struct ib_common_attrib_service *svc;
- __u64 tid;
- int rc;
- int rc2;
-
- PORTAL_ALLOC(svc, sizeof(*svc));
- if (svc == NULL)
- return;
-
- memset (svc, 0, sizeof (*svc));
- kibnal_set_service_keys(svc, kibnal_data.kib_nid);
-
- rc = ib_service_get (kibnal_data.kib_device,
- kibnal_data.kib_port,
- svc,
- KIBNAL_SERVICE_KEY_MASK,
- kibnal_tunables.kib_io_timeout * HZ,
- kibnal_service_setunset_done, &rc2,
- &tid);
-
- if (rc != 0) {
- CERROR ("Immediate error %d checking SM service\n", rc);
- } else {
- down (&kibnal_data.kib_nid_signal);
- rc = rc2;
-
- if (rc != 0)
- CERROR ("Error %d checking SM service\n", rc);
- }
-
- PORTAL_FREE(svc, sizeof(*svc));
-}
-#endif
-
-int
-kibnal_advertise (void)
-{
- struct ib_common_attrib_service *svc;
- __u64 tid;
- int rc;
- int rc2;
-
- LASSERT (kibnal_data.kib_nid != PTL_NID_ANY);
-
- PORTAL_ALLOC(svc, sizeof(*svc));
- if (svc == NULL)
- return (-ENOMEM);
-
- memset (svc, 0, sizeof (*svc));
-
- svc->service_id = kibnal_data.kib_service_id;
-
- rc = ib_cached_gid_get(kibnal_data.kib_device,
- kibnal_data.kib_port,
- 0,
- svc->service_gid);
- if (rc != 0) {
- CERROR ("Can't get port %d GID: %d\n",
- kibnal_data.kib_port, rc);
- goto out;
- }
-
- rc = ib_cached_pkey_get(kibnal_data.kib_device,
- kibnal_data.kib_port,
- 0,
- &svc->service_pkey);
- if (rc != 0) {
- CERROR ("Can't get port %d PKEY: %d\n",
- kibnal_data.kib_port, rc);
- goto out;
- }
-
- svc->service_lease = 0xffffffff;
-
- kibnal_set_service_keys(svc, kibnal_data.kib_nid);
-
- CDEBUG(D_NET, "Advertising service id "LPX64" %s:"LPX64"\n",
- svc->service_id,
- svc->service_name, *kibnal_service_nid_field(svc));
-
- rc = ib_service_set (kibnal_data.kib_device,
- kibnal_data.kib_port,
- svc,
- IB_SA_SERVICE_COMP_MASK_ID |
- IB_SA_SERVICE_COMP_MASK_GID |
- IB_SA_SERVICE_COMP_MASK_PKEY |
- IB_SA_SERVICE_COMP_MASK_LEASE |
- KIBNAL_SERVICE_KEY_MASK,
- kibnal_tunables.kib_io_timeout * HZ,
- kibnal_service_setunset_done, &rc2, &tid);
-
- if (rc != 0) {
- CERROR ("Immediate error %d advertising NID "LPX64"\n",
- rc, kibnal_data.kib_nid);
- goto out;
- }
-
- down (&kibnal_data.kib_nid_signal);
-
- rc = rc2;
- if (rc != 0)
- CERROR ("Error %d advertising NID "LPX64"\n",
- rc, kibnal_data.kib_nid);
- out:
- PORTAL_FREE(svc, sizeof(*svc));
- return (rc);
-}
-
-void
-kibnal_unadvertise (int expect_success)
-{
- struct ib_common_attrib_service *svc;
- __u64 tid;
- int rc;
- int rc2;
-
- LASSERT (kibnal_data.kib_nid != PTL_NID_ANY);
-
- PORTAL_ALLOC(svc, sizeof(*svc));
- if (svc == NULL)
- return;
-
- memset (svc, 0, sizeof(*svc));
-
- kibnal_set_service_keys(svc, kibnal_data.kib_nid);
-
- CDEBUG(D_NET, "Unadvertising service %s:"LPX64"\n",
- svc->service_name, *kibnal_service_nid_field(svc));
-
- rc = ib_service_delete (kibnal_data.kib_device,
- kibnal_data.kib_port,
- svc,
- KIBNAL_SERVICE_KEY_MASK,
- kibnal_tunables.kib_io_timeout * HZ,
- kibnal_service_setunset_done, &rc2, &tid);
- if (rc != 0) {
- CERROR ("Immediate error %d unadvertising NID "LPX64"\n",
- rc, kibnal_data.kib_nid);
- goto out;
- }
-
- down (&kibnal_data.kib_nid_signal);
-
- if ((rc2 == 0) == !!expect_success)
- goto out; /* success: rc == 0 */
-
- if (expect_success)
- CERROR("Error %d unadvertising NID "LPX64"\n",
- rc, kibnal_data.kib_nid);
- else
- CWARN("Removed conflicting NID "LPX64"\n",
- kibnal_data.kib_nid);
- out:
- PORTAL_FREE(svc, sizeof(*svc));
-}
-
-int
-kibnal_set_mynid(ptl_nid_t nid)
-{
- struct timeval tv;
- lib_ni_t *ni = &kibnal_lib.libnal_ni;
- int rc;
-
- CDEBUG(D_IOCTL, "setting mynid to "LPX64" (old nid="LPX64")\n",
- nid, ni->ni_pid.nid);
-
- do_gettimeofday(&tv);
-
- down (&kibnal_data.kib_nid_mutex);
-
- if (nid == kibnal_data.kib_nid) {
- /* no change of NID */
- up (&kibnal_data.kib_nid_mutex);
- return (0);
- }
-
- CDEBUG(D_NET, "NID "LPX64"("LPX64")\n",
- kibnal_data.kib_nid, nid);
-
- if (kibnal_data.kib_nid != PTL_NID_ANY) {
-
- kibnal_unadvertise (1);
-
- rc = ib_cm_listen_stop (kibnal_data.kib_listen_handle);
- if (rc != 0)
- CERROR ("Error %d stopping listener\n", rc);
- }
-
- kibnal_data.kib_nid = ni->ni_pid.nid = nid;
- kibnal_data.kib_incarnation = (((__u64)tv.tv_sec) * 1000000) + tv.tv_usec;
-
- /* Delete all existing peers and their connections after new
- * NID/incarnation set to ensure no old connections in our brave
- * new world. */
- kibnal_del_peer (PTL_NID_ANY, 0);
-
- if (kibnal_data.kib_nid == PTL_NID_ANY) {
- /* No new NID to install */
- up (&kibnal_data.kib_nid_mutex);
- return (0);
- }
-
- /* remove any previous advert (crashed node etc) */
- kibnal_unadvertise(0);
-
- /* Assign new service number */
- kibnal_data.kib_service_id = ib_cm_service_assign();
- CDEBUG(D_NET, "service_id "LPX64"\n", kibnal_data.kib_service_id);
-
- rc = ib_cm_listen(kibnal_data.kib_service_id,
- TS_IB_CM_SERVICE_EXACT_MASK,
- kibnal_passive_conn_callback, NULL,
- &kibnal_data.kib_listen_handle);
- if (rc == 0) {
- rc = kibnal_advertise();
- if (rc == 0) {
-#if IBNAL_CHECK_ADVERT
- kibnal_check_advert();
-#endif
- up (&kibnal_data.kib_nid_mutex);
- return (0);
- }
-
- ib_cm_listen_stop(kibnal_data.kib_listen_handle);
- /* remove any peers that sprung up while I failed to
- * advertise myself */
- kibnal_del_peer (PTL_NID_ANY, 0);
- }
-
- kibnal_data.kib_nid = PTL_NID_ANY;
- up (&kibnal_data.kib_nid_mutex);
- return (rc);
-}
-
-kib_peer_t *
-kibnal_create_peer (ptl_nid_t nid)
-{
- kib_peer_t *peer;
-
- LASSERT (nid != PTL_NID_ANY);
-
- PORTAL_ALLOC (peer, sizeof (*peer));
- if (peer == NULL)
- return (NULL);
-
- memset(peer, 0, sizeof(*peer)); /* zero flags etc */
-
- peer->ibp_nid = nid;
- atomic_set (&peer->ibp_refcount, 1); /* 1 ref for caller */
-
- INIT_LIST_HEAD (&peer->ibp_list); /* not in the peer table yet */
- INIT_LIST_HEAD (&peer->ibp_conns);
- INIT_LIST_HEAD (&peer->ibp_tx_queue);
-
- peer->ibp_reconnect_time = jiffies;
- peer->ibp_reconnect_interval = IBNAL_MIN_RECONNECT_INTERVAL;
-
- atomic_inc (&kibnal_data.kib_npeers);
- return (peer);
-}
-
-void
-kibnal_destroy_peer (kib_peer_t *peer)
-{
- CDEBUG (D_NET, "peer "LPX64" %p deleted\n", peer->ibp_nid, peer);
-
- LASSERT (atomic_read (&peer->ibp_refcount) == 0);
- LASSERT (peer->ibp_persistence == 0);
- LASSERT (!kibnal_peer_active(peer));
- LASSERT (peer->ibp_connecting == 0);
- LASSERT (list_empty (&peer->ibp_conns));
- LASSERT (list_empty (&peer->ibp_tx_queue));
-
- PORTAL_FREE (peer, sizeof (*peer));
-
- /* NB a peer's connections keep a reference on their peer until
- * they are destroyed, so we can be assured that _all_ state to do
- * with this peer has been cleaned up when its refcount drops to
- * zero. */
- atomic_dec (&kibnal_data.kib_npeers);
-}
-
-void
-kibnal_put_peer (kib_peer_t *peer)
-{
- CDEBUG (D_OTHER, "putting peer[%p] -> "LPX64" (%d)\n",
- peer, peer->ibp_nid,
- atomic_read (&peer->ibp_refcount));
-
- LASSERT (atomic_read (&peer->ibp_refcount) > 0);
- if (!atomic_dec_and_test (&peer->ibp_refcount))
- return;
-
- kibnal_destroy_peer (peer);
-}
-
-kib_peer_t *
-kibnal_find_peer_locked (ptl_nid_t nid)
-{
- struct list_head *peer_list = kibnal_nid2peerlist (nid);
- struct list_head *tmp;
- kib_peer_t *peer;
-
- list_for_each (tmp, peer_list) {
-
- peer = list_entry (tmp, kib_peer_t, ibp_list);
-
- LASSERT (peer->ibp_persistence != 0 || /* persistent peer */
- peer->ibp_connecting != 0 || /* creating conns */
- !list_empty (&peer->ibp_conns)); /* active conn */
-
- if (peer->ibp_nid != nid)
- continue;
-
- CDEBUG(D_NET, "got peer [%p] -> "LPX64" (%d)\n",
- peer, nid, atomic_read (&peer->ibp_refcount));
- return (peer);
- }
- return (NULL);
-}
-
-kib_peer_t *
-kibnal_get_peer (ptl_nid_t nid)
-{
- kib_peer_t *peer;
-
- read_lock (&kibnal_data.kib_global_lock);
- peer = kibnal_find_peer_locked (nid);
- if (peer != NULL) /* +1 ref for caller? */
- atomic_inc (&peer->ibp_refcount);
- read_unlock (&kibnal_data.kib_global_lock);
-
- return (peer);
-}
-
-void
-kibnal_unlink_peer_locked (kib_peer_t *peer)
-{
- LASSERT (peer->ibp_persistence == 0);
- LASSERT (list_empty(&peer->ibp_conns));
-
- LASSERT (kibnal_peer_active(peer));
- list_del_init (&peer->ibp_list);
- /* lose peerlist's ref */
- kibnal_put_peer (peer);
-}
-
-int
-kibnal_get_peer_info (int index, ptl_nid_t *nidp, int *persistencep)
-{
- kib_peer_t *peer;
- struct list_head *ptmp;
- int i;
-
- read_lock (&kibnal_data.kib_global_lock);
-
- for (i = 0; i < kibnal_data.kib_peer_hash_size; i++) {
-
- list_for_each (ptmp, &kibnal_data.kib_peers[i]) {
-
- peer = list_entry (ptmp, kib_peer_t, ibp_list);
- LASSERT (peer->ibp_persistence != 0 ||
- peer->ibp_connecting != 0 ||
- !list_empty (&peer->ibp_conns));
-
- if (index-- > 0)
- continue;
-
- *nidp = peer->ibp_nid;
- *persistencep = peer->ibp_persistence;
-
- read_unlock (&kibnal_data.kib_global_lock);
- return (0);
- }
- }
-
- read_unlock (&kibnal_data.kib_global_lock);
- return (-ENOENT);
-}
-
-int
-kibnal_add_persistent_peer (ptl_nid_t nid)
-{
- unsigned long flags;
- kib_peer_t *peer;
- kib_peer_t *peer2;
-
- if (nid == PTL_NID_ANY)
- return (-EINVAL);
-
- peer = kibnal_create_peer (nid);
- if (peer == NULL)
- return (-ENOMEM);
-
- write_lock_irqsave (&kibnal_data.kib_global_lock, flags);
-
- peer2 = kibnal_find_peer_locked (nid);
- if (peer2 != NULL) {
- kibnal_put_peer (peer);
- peer = peer2;
- } else {
- /* peer table takes existing ref on peer */
- list_add_tail (&peer->ibp_list,
- kibnal_nid2peerlist (nid));
- }
-
- peer->ibp_persistence++;
-
- write_unlock_irqrestore (&kibnal_data.kib_global_lock, flags);
- return (0);
-}
-
-void
-kibnal_del_peer_locked (kib_peer_t *peer, int single_share)
-{
- struct list_head *ctmp;
- struct list_head *cnxt;
- kib_conn_t *conn;
-
- if (!single_share)
- peer->ibp_persistence = 0;
- else if (peer->ibp_persistence > 0)
- peer->ibp_persistence--;
-
- if (peer->ibp_persistence != 0)
- return;
-
- list_for_each_safe (ctmp, cnxt, &peer->ibp_conns) {
- conn = list_entry(ctmp, kib_conn_t, ibc_list);
-
- kibnal_close_conn_locked (conn, 0);
- }
-
- /* NB peer unlinks itself when last conn is closed */
-}
-
-int
-kibnal_del_peer (ptl_nid_t nid, int single_share)
-{
- unsigned long flags;
- struct list_head *ptmp;
- struct list_head *pnxt;
- kib_peer_t *peer;
- int lo;
- int hi;
- int i;
- int rc = -ENOENT;
-
- write_lock_irqsave (&kibnal_data.kib_global_lock, flags);
-
- if (nid != PTL_NID_ANY)
- lo = hi = kibnal_nid2peerlist(nid) - kibnal_data.kib_peers;
- else {
- lo = 0;
- hi = kibnal_data.kib_peer_hash_size - 1;
- }
-
- for (i = lo; i <= hi; i++) {
- list_for_each_safe (ptmp, pnxt, &kibnal_data.kib_peers[i]) {
- peer = list_entry (ptmp, kib_peer_t, ibp_list);
- LASSERT (peer->ibp_persistence != 0 ||
- peer->ibp_connecting != 0 ||
- !list_empty (&peer->ibp_conns));
-
- if (!(nid == PTL_NID_ANY || peer->ibp_nid == nid))
- continue;
-
- kibnal_del_peer_locked (peer, single_share);
- rc = 0; /* matched something */
-
- if (single_share)
- goto out;
- }
- }
- out:
- write_unlock_irqrestore (&kibnal_data.kib_global_lock, flags);
-
- return (rc);
-}
-
-kib_conn_t *
-kibnal_get_conn_by_idx (int index)
-{
- kib_peer_t *peer;
- struct list_head *ptmp;
- kib_conn_t *conn;
- struct list_head *ctmp;
- int i;
-
- read_lock (&kibnal_data.kib_global_lock);
-
- for (i = 0; i < kibnal_data.kib_peer_hash_size; i++) {
- list_for_each (ptmp, &kibnal_data.kib_peers[i]) {
-
- peer = list_entry (ptmp, kib_peer_t, ibp_list);
- LASSERT (peer->ibp_persistence > 0 ||
- peer->ibp_connecting != 0 ||
- !list_empty (&peer->ibp_conns));
-
- list_for_each (ctmp, &peer->ibp_conns) {
- if (index-- > 0)
- continue;
-
- conn = list_entry (ctmp, kib_conn_t, ibc_list);
- CDEBUG(D_NET, "++conn[%p] state %d -> "LPX64" (%d)\n",
- conn, conn->ibc_state, conn->ibc_peer->ibp_nid,
- atomic_read (&conn->ibc_refcount));
- atomic_inc (&conn->ibc_refcount);
- read_unlock (&kibnal_data.kib_global_lock);
- return (conn);
- }
- }
- }
-
- read_unlock (&kibnal_data.kib_global_lock);
- return (NULL);
-}
-
-kib_conn_t *
-kibnal_create_conn (void)
-{
- kib_conn_t *conn;
- int i;
- __u64 vaddr = 0;
- __u64 vaddr_base;
- int page_offset;
- int ipage;
- int rc;
- union {
- struct ib_qp_create_param qp_create;
- struct ib_qp_attribute qp_attr;
- } params;
-
- PORTAL_ALLOC (conn, sizeof (*conn));
- if (conn == NULL) {
- CERROR ("Can't allocate connection\n");
- return (NULL);
- }
-
- /* zero flags, NULL pointers etc... */
- memset (conn, 0, sizeof (*conn));
-
- INIT_LIST_HEAD (&conn->ibc_tx_queue);
- INIT_LIST_HEAD (&conn->ibc_active_txs);
- spin_lock_init (&conn->ibc_lock);
-
- atomic_inc (&kibnal_data.kib_nconns);
- /* well not really, but I call destroy() on failure, which decrements */
-
- PORTAL_ALLOC (conn->ibc_rxs, IBNAL_RX_MSGS * sizeof (kib_rx_t));
- if (conn->ibc_rxs == NULL)
- goto failed;
- memset (conn->ibc_rxs, 0, IBNAL_RX_MSGS * sizeof(kib_rx_t));
-
- rc = kibnal_alloc_pages(&conn->ibc_rx_pages,
- IBNAL_RX_MSG_PAGES,
- IB_ACCESS_LOCAL_WRITE);
- if (rc != 0)
- goto failed;
-
- vaddr_base = vaddr = conn->ibc_rx_pages->ibp_vaddr;
-
- for (i = ipage = page_offset = 0; i < IBNAL_RX_MSGS; i++) {
- struct page *page = conn->ibc_rx_pages->ibp_pages[ipage];
- kib_rx_t *rx = &conn->ibc_rxs[i];
-
- rx->rx_conn = conn;
- rx->rx_vaddr = vaddr;
- rx->rx_msg = (kib_msg_t *)(((char *)page_address(page)) + page_offset);
-
- vaddr += IBNAL_MSG_SIZE;
- LASSERT (vaddr <= vaddr_base + IBNAL_RX_MSG_BYTES);
-
- page_offset += IBNAL_MSG_SIZE;
- LASSERT (page_offset <= PAGE_SIZE);
-
- if (page_offset == PAGE_SIZE) {
- page_offset = 0;
- ipage++;
- LASSERT (ipage <= IBNAL_RX_MSG_PAGES);
- }
- }
-
- params.qp_create = (struct ib_qp_create_param) {
- .limit = {
- /* Sends have an optional RDMA */
- .max_outstanding_send_request = 2 * IBNAL_MSG_QUEUE_SIZE,
- .max_outstanding_receive_request = IBNAL_MSG_QUEUE_SIZE,
- .max_send_gather_element = 1,
- .max_receive_scatter_element = 1,
- },
- .pd = kibnal_data.kib_pd,
- .send_queue = kibnal_data.kib_cq,
- .receive_queue = kibnal_data.kib_cq,
- .send_policy = IB_WQ_SIGNAL_SELECTABLE,
- .receive_policy = IB_WQ_SIGNAL_SELECTABLE,
- .rd_domain = 0,
- .transport = IB_TRANSPORT_RC,
- .device_specific = NULL,
- };
-
- rc = ib_qp_create (¶ms.qp_create, &conn->ibc_qp, &conn->ibc_qpn);
- if (rc != 0) {
- CERROR ("Failed to create queue pair: %d\n", rc);
- goto failed;
- }
-
- /* Mark QP created */
- conn->ibc_state = IBNAL_CONN_INIT_QP;
-
- params.qp_attr = (struct ib_qp_attribute) {
- .state = IB_QP_STATE_INIT,
- .port = kibnal_data.kib_port,
- .enable_rdma_read = 1,
- .enable_rdma_write = 1,
- .valid_fields = (IB_QP_ATTRIBUTE_STATE |
- IB_QP_ATTRIBUTE_PORT |
- IB_QP_ATTRIBUTE_PKEY_INDEX |
- IB_QP_ATTRIBUTE_RDMA_ATOMIC_ENABLE),
- };
- rc = ib_qp_modify(conn->ibc_qp, ¶ms.qp_attr);
- if (rc != 0) {
- CERROR ("Failed to modify queue pair: %d\n", rc);
- goto failed;
- }
-
- /* 1 ref for caller */
- atomic_set (&conn->ibc_refcount, 1);
- return (conn);
-
- failed:
- kibnal_destroy_conn (conn);
- return (NULL);
-}
-
-void
-kibnal_destroy_conn (kib_conn_t *conn)
-{
- int rc;
-
- CDEBUG (D_NET, "connection %p\n", conn);
-
- LASSERT (atomic_read (&conn->ibc_refcount) == 0);
- LASSERT (list_empty(&conn->ibc_tx_queue));
- LASSERT (list_empty(&conn->ibc_active_txs));
- LASSERT (conn->ibc_nsends_posted == 0);
- LASSERT (conn->ibc_connreq == NULL);
-
- switch (conn->ibc_state) {
- case IBNAL_CONN_ZOMBIE:
- /* called after connection sequence initiated */
-
- case IBNAL_CONN_INIT_QP:
- rc = ib_qp_destroy(conn->ibc_qp);
- if (rc != 0)
- CERROR("Can't destroy QP: %d\n", rc);
- /* fall through */
-
- case IBNAL_CONN_INIT_NOTHING:
- break;
-
- default:
- LASSERT (0);
- }
-
- if (conn->ibc_rx_pages != NULL)
- kibnal_free_pages(conn->ibc_rx_pages);
-
- if (conn->ibc_rxs != NULL)
- PORTAL_FREE(conn->ibc_rxs,
- IBNAL_RX_MSGS * sizeof(kib_rx_t));
-
- if (conn->ibc_peer != NULL)
- kibnal_put_peer(conn->ibc_peer);
-
- PORTAL_FREE(conn, sizeof (*conn));
-
- atomic_dec(&kibnal_data.kib_nconns);
-
- if (atomic_read (&kibnal_data.kib_nconns) == 0 &&
- kibnal_data.kib_shutdown) {
- /* I just nuked the last connection on shutdown; wake up
- * everyone so they can exit. */
- wake_up_all(&kibnal_data.kib_sched_waitq);
- wake_up_all(&kibnal_data.kib_connd_waitq);
- }
-}
-
-void
-kibnal_put_conn (kib_conn_t *conn)
-{
- unsigned long flags;
-
- CDEBUG (D_NET, "putting conn[%p] state %d -> "LPX64" (%d)\n",
- conn, conn->ibc_state, conn->ibc_peer->ibp_nid,
- atomic_read (&conn->ibc_refcount));
-
- LASSERT (atomic_read (&conn->ibc_refcount) > 0);
- if (!atomic_dec_and_test (&conn->ibc_refcount))
- return;
-
- /* last ref only goes on zombies */
- LASSERT (conn->ibc_state == IBNAL_CONN_ZOMBIE);
-
- spin_lock_irqsave (&kibnal_data.kib_connd_lock, flags);
-
- list_add (&conn->ibc_list, &kibnal_data.kib_connd_conns);
- wake_up (&kibnal_data.kib_connd_waitq);
-
- spin_unlock_irqrestore (&kibnal_data.kib_connd_lock, flags);
-}
-
-int
-kibnal_close_peer_conns_locked (kib_peer_t *peer, int why)
-{
- kib_conn_t *conn;
- struct list_head *ctmp;
- struct list_head *cnxt;
- int count = 0;
-
- list_for_each_safe (ctmp, cnxt, &peer->ibp_conns) {
- conn = list_entry (ctmp, kib_conn_t, ibc_list);
-
- count++;
- kibnal_close_conn_locked (conn, why);
- }
-
- return (count);
-}
-
-int
-kibnal_close_stale_conns_locked (kib_peer_t *peer, __u64 incarnation)
-{
- kib_conn_t *conn;
- struct list_head *ctmp;
- struct list_head *cnxt;
- int count = 0;
-
- list_for_each_safe (ctmp, cnxt, &peer->ibp_conns) {
- conn = list_entry (ctmp, kib_conn_t, ibc_list);
-
- if (conn->ibc_incarnation == incarnation)
- continue;
-
- CDEBUG(D_NET, "Closing stale conn nid:"LPX64" incarnation:"LPX64"("LPX64")\n",
- peer->ibp_nid, conn->ibc_incarnation, incarnation);
-
- count++;
- kibnal_close_conn_locked (conn, -ESTALE);
- }
-
- return (count);
-}
-
-int
-kibnal_close_matching_conns (ptl_nid_t nid)
-{
- unsigned long flags;
- kib_peer_t *peer;
- struct list_head *ptmp;
- struct list_head *pnxt;
- int lo;
- int hi;
- int i;
- int count = 0;
-
- write_lock_irqsave (&kibnal_data.kib_global_lock, flags);
-
- if (nid != PTL_NID_ANY)
- lo = hi = kibnal_nid2peerlist(nid) - kibnal_data.kib_peers;
- else {
- lo = 0;
- hi = kibnal_data.kib_peer_hash_size - 1;
- }
-
- for (i = lo; i <= hi; i++) {
- list_for_each_safe (ptmp, pnxt, &kibnal_data.kib_peers[i]) {
-
- peer = list_entry (ptmp, kib_peer_t, ibp_list);
- LASSERT (peer->ibp_persistence != 0 ||
- peer->ibp_connecting != 0 ||
- !list_empty (&peer->ibp_conns));
-
- if (!(nid == PTL_NID_ANY || nid == peer->ibp_nid))
- continue;
-
- count += kibnal_close_peer_conns_locked (peer, 0);
- }
- }
-
- write_unlock_irqrestore (&kibnal_data.kib_global_lock, flags);
-
- /* wildcards always succeed */
- if (nid == PTL_NID_ANY)
- return (0);
-
- return (count == 0 ? -ENOENT : 0);
-}
-
-int
-kibnal_cmd(struct portals_cfg *pcfg, void * private)
-{
- int rc = -EINVAL;
-
- LASSERT (pcfg != NULL);
-
- switch(pcfg->pcfg_command) {
- case NAL_CMD_GET_PEER: {
- ptl_nid_t nid = 0;
- int share_count = 0;
-
- rc = kibnal_get_peer_info(pcfg->pcfg_count,
- &nid, &share_count);
- pcfg->pcfg_nid = nid;
- pcfg->pcfg_size = 0;
- pcfg->pcfg_id = 0;
- pcfg->pcfg_misc = 0;
- pcfg->pcfg_count = 0;
- pcfg->pcfg_wait = share_count;
- break;
- }
- case NAL_CMD_ADD_PEER: {
- rc = kibnal_add_persistent_peer (pcfg->pcfg_nid);
- break;
- }
- case NAL_CMD_DEL_PEER: {
- rc = kibnal_del_peer (pcfg->pcfg_nid,
- /* flags == single_share */
- pcfg->pcfg_flags != 0);
- break;
- }
- case NAL_CMD_GET_CONN: {
- kib_conn_t *conn = kibnal_get_conn_by_idx (pcfg->pcfg_count);
-
- if (conn == NULL)
- rc = -ENOENT;
- else {
- rc = 0;
- pcfg->pcfg_nid = conn->ibc_peer->ibp_nid;
- pcfg->pcfg_id = 0;
- pcfg->pcfg_misc = 0;
- pcfg->pcfg_flags = 0;
- kibnal_put_conn (conn);
- }
- break;
- }
- case NAL_CMD_CLOSE_CONNECTION: {
- rc = kibnal_close_matching_conns (pcfg->pcfg_nid);
- break;
- }
- case NAL_CMD_REGISTER_MYNID: {
- if (pcfg->pcfg_nid == PTL_NID_ANY)
- rc = -EINVAL;
- else
- rc = kibnal_set_mynid (pcfg->pcfg_nid);
- break;
- }
- }
-
- return rc;
-}
-
-void
-kibnal_free_pages (kib_pages_t *p)
-{
- int npages = p->ibp_npages;
- int rc;
- int i;
-
- if (p->ibp_mapped) {
- rc = ib_memory_deregister(p->ibp_handle);
- if (rc != 0)
- CERROR ("Deregister error: %d\n", rc);
- }
-
- for (i = 0; i < npages; i++)
- if (p->ibp_pages[i] != NULL)
- __free_page(p->ibp_pages[i]);
-
- PORTAL_FREE (p, offsetof(kib_pages_t, ibp_pages[npages]));
-}
-
-int
-kibnal_alloc_pages (kib_pages_t **pp, int npages, int access)
-{
- kib_pages_t *p;
- struct ib_physical_buffer *phys_pages;
- int i;
- int rc;
-
- PORTAL_ALLOC(p, offsetof(kib_pages_t, ibp_pages[npages]));
- if (p == NULL) {
- CERROR ("Can't allocate buffer %d\n", npages);
- return (-ENOMEM);
- }
-
- memset (p, 0, offsetof(kib_pages_t, ibp_pages[npages]));
- p->ibp_npages = npages;
-
- for (i = 0; i < npages; i++) {
- p->ibp_pages[i] = alloc_page (GFP_KERNEL);
- if (p->ibp_pages[i] == NULL) {
- CERROR ("Can't allocate page %d of %d\n", i, npages);
- kibnal_free_pages(p);
- return (-ENOMEM);
- }
- }
-
- PORTAL_ALLOC(phys_pages, npages * sizeof(*phys_pages));
- if (phys_pages == NULL) {
- CERROR ("Can't allocate physarray for %d pages\n", npages);
- kibnal_free_pages(p);
- return (-ENOMEM);
- }
-
- for (i = 0; i < npages; i++) {
- phys_pages[i].size = PAGE_SIZE;
- phys_pages[i].address =
- kibnal_page2phys(p->ibp_pages[i]);
- }
-
- p->ibp_vaddr = 0;
- rc = ib_memory_register_physical(kibnal_data.kib_pd,
- phys_pages, npages,
- &p->ibp_vaddr,
- npages * PAGE_SIZE, 0,
- access,
- &p->ibp_handle,
- &p->ibp_lkey,
- &p->ibp_rkey);
-
- PORTAL_FREE(phys_pages, npages * sizeof(*phys_pages));
-
- if (rc != 0) {
- CERROR ("Error %d mapping %d pages\n", rc, npages);
- kibnal_free_pages(p);
- return (rc);
- }
-
- p->ibp_mapped = 1;
- *pp = p;
- return (0);
-}
-
-int
-kibnal_setup_tx_descs (void)
-{
- int ipage = 0;
- int page_offset = 0;
- __u64 vaddr;
- __u64 vaddr_base;
- struct page *page;
- kib_tx_t *tx;
- int i;
- int rc;
-
- /* pre-mapped messages are not bigger than 1 page */
- LASSERT (IBNAL_MSG_SIZE <= PAGE_SIZE);
-
- /* No fancy arithmetic when we do the buffer calculations */
- LASSERT (PAGE_SIZE % IBNAL_MSG_SIZE == 0);
-
- rc = kibnal_alloc_pages(&kibnal_data.kib_tx_pages,
- IBNAL_TX_MSG_PAGES,
- 0); /* local read access only */
- if (rc != 0)
- return (rc);
-
- vaddr = vaddr_base = kibnal_data.kib_tx_pages->ibp_vaddr;
-
- for (i = 0; i < IBNAL_TX_MSGS; i++) {
- page = kibnal_data.kib_tx_pages->ibp_pages[ipage];
- tx = &kibnal_data.kib_tx_descs[i];
-
- memset (tx, 0, sizeof(*tx)); /* zero flags etc */
-
- tx->tx_msg = (kib_msg_t *)(((char *)page_address(page)) + page_offset);
- tx->tx_vaddr = vaddr;
- tx->tx_isnblk = (i >= IBNAL_NTX);
- tx->tx_mapped = KIB_TX_UNMAPPED;
-
- CDEBUG(D_NET, "Tx[%d] %p->%p - "LPX64"\n",
- i, tx, tx->tx_msg, tx->tx_vaddr);
-
- if (tx->tx_isnblk)
- list_add (&tx->tx_list,
- &kibnal_data.kib_idle_nblk_txs);
- else
- list_add (&tx->tx_list,
- &kibnal_data.kib_idle_txs);
-
- vaddr += IBNAL_MSG_SIZE;
- LASSERT (vaddr <= vaddr_base + IBNAL_TX_MSG_BYTES);
-
- page_offset += IBNAL_MSG_SIZE;
- LASSERT (page_offset <= PAGE_SIZE);
-
- if (page_offset == PAGE_SIZE) {
- page_offset = 0;
- ipage++;
- LASSERT (ipage <= IBNAL_TX_MSG_PAGES);
- }
- }
-
- return (0);
-}
-
-void
-kibnal_api_shutdown (nal_t *nal)
-{
- int i;
- int rc;
-
- if (nal->nal_refct != 0) {
- /* This module got the first ref */
- PORTAL_MODULE_UNUSE;
- return;
- }
-
- CDEBUG(D_MALLOC, "before NAL cleanup: kmem %d\n",
- atomic_read (&portal_kmemory));
-
- LASSERT(nal == &kibnal_api);
-
- switch (kibnal_data.kib_init) {
- default:
- CERROR ("Unexpected state %d\n", kibnal_data.kib_init);
- LBUG();
-
- case IBNAL_INIT_ALL:
- /* stop calls to nal_cmd */
- libcfs_nal_cmd_unregister(OPENIBNAL);
- /* No new peers */
-
- /* resetting my NID to unadvertises me, removes my
- * listener and nukes all current peers */
- kibnal_set_mynid (PTL_NID_ANY);
-
- /* Wait for all peer state to clean up */
- i = 2;
- while (atomic_read (&kibnal_data.kib_npeers) != 0) {
- i++;
- CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, /* power of 2? */
- "waiting for %d peers to close down\n",
- atomic_read (&kibnal_data.kib_npeers));
- set_current_state (TASK_INTERRUPTIBLE);
- schedule_timeout (HZ);
- }
- /* fall through */
-
- case IBNAL_INIT_CQ:
- rc = ib_cq_destroy (kibnal_data.kib_cq);
- if (rc != 0)
- CERROR ("Destroy CQ error: %d\n", rc);
- /* fall through */
-
- case IBNAL_INIT_TXD:
- kibnal_free_pages (kibnal_data.kib_tx_pages);
- /* fall through */
-#if IBNAL_FMR
- case IBNAL_INIT_FMR:
- rc = ib_fmr_pool_destroy (kibnal_data.kib_fmr_pool);
- if (rc != 0)
- CERROR ("Destroy FMR pool error: %d\n", rc);
- /* fall through */
-#endif
- case IBNAL_INIT_PD:
- rc = ib_pd_destroy(kibnal_data.kib_pd);
- if (rc != 0)
- CERROR ("Destroy PD error: %d\n", rc);
- /* fall through */
-
- case IBNAL_INIT_LIB:
- lib_fini(&kibnal_lib);
- /* fall through */
-
- case IBNAL_INIT_DATA:
- /* Module refcount only gets to zero when all peers
- * have been closed so all lists must be empty */
- LASSERT (atomic_read (&kibnal_data.kib_npeers) == 0);
- LASSERT (kibnal_data.kib_peers != NULL);
- for (i = 0; i < kibnal_data.kib_peer_hash_size; i++) {
- LASSERT (list_empty (&kibnal_data.kib_peers[i]));
- }
- LASSERT (atomic_read (&kibnal_data.kib_nconns) == 0);
- LASSERT (list_empty (&kibnal_data.kib_sched_rxq));
- LASSERT (list_empty (&kibnal_data.kib_sched_txq));
- LASSERT (list_empty (&kibnal_data.kib_connd_conns));
- LASSERT (list_empty (&kibnal_data.kib_connd_peers));
-
- /* flag threads to terminate; wake and wait for them to die */
- kibnal_data.kib_shutdown = 1;
- wake_up_all (&kibnal_data.kib_sched_waitq);
- wake_up_all (&kibnal_data.kib_connd_waitq);
-
- i = 2;
- while (atomic_read (&kibnal_data.kib_nthreads) != 0) {
- i++;
- CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, /* power of 2? */
- "Waiting for %d threads to terminate\n",
- atomic_read (&kibnal_data.kib_nthreads));
- set_current_state (TASK_INTERRUPTIBLE);
- schedule_timeout (HZ);
- }
- /* fall through */
-
- case IBNAL_INIT_NOTHING:
- break;
- }
-
- if (kibnal_data.kib_tx_descs != NULL)
- PORTAL_FREE (kibnal_data.kib_tx_descs,
- IBNAL_TX_MSGS * sizeof(kib_tx_t));
-
- if (kibnal_data.kib_peers != NULL)
- PORTAL_FREE (kibnal_data.kib_peers,
- sizeof (struct list_head) *
- kibnal_data.kib_peer_hash_size);
-
- CDEBUG(D_MALLOC, "after NAL cleanup: kmem %d\n",
- atomic_read (&portal_kmemory));
- printk(KERN_INFO "Lustre: OpenIB NAL unloaded (final mem %d)\n",
- atomic_read(&portal_kmemory));
-
- kibnal_data.kib_init = IBNAL_INIT_NOTHING;
-}
-
-int
-kibnal_api_startup (nal_t *nal, ptl_pid_t requested_pid,
- ptl_ni_limits_t *requested_limits,
- ptl_ni_limits_t *actual_limits)
-{
- ptl_process_id_t process_id;
- int pkmem = atomic_read(&portal_kmemory);
- int rc;
- int i;
-
- LASSERT (nal == &kibnal_api);
-
- if (nal->nal_refct != 0) {
- if (actual_limits != NULL)
- *actual_limits = kibnal_lib.libnal_ni.ni_actual_limits;
- /* This module got the first ref */
- PORTAL_MODULE_USE;
- return (PTL_OK);
- }
-
- LASSERT (kibnal_data.kib_init == IBNAL_INIT_NOTHING);
-
- memset (&kibnal_data, 0, sizeof (kibnal_data)); /* zero pointers, flags etc */
-
- init_MUTEX (&kibnal_data.kib_nid_mutex);
- init_MUTEX_LOCKED (&kibnal_data.kib_nid_signal);
- kibnal_data.kib_nid = PTL_NID_ANY;
-
- rwlock_init(&kibnal_data.kib_global_lock);
-
- kibnal_data.kib_peer_hash_size = IBNAL_PEER_HASH_SIZE;
- PORTAL_ALLOC (kibnal_data.kib_peers,
- sizeof (struct list_head) * kibnal_data.kib_peer_hash_size);
- if (kibnal_data.kib_peers == NULL) {
- goto failed;
- }
- for (i = 0; i < kibnal_data.kib_peer_hash_size; i++)
- INIT_LIST_HEAD(&kibnal_data.kib_peers[i]);
-
- spin_lock_init (&kibnal_data.kib_connd_lock);
- INIT_LIST_HEAD (&kibnal_data.kib_connd_peers);
- INIT_LIST_HEAD (&kibnal_data.kib_connd_conns);
- init_waitqueue_head (&kibnal_data.kib_connd_waitq);
-
- spin_lock_init (&kibnal_data.kib_sched_lock);
- INIT_LIST_HEAD (&kibnal_data.kib_sched_txq);
- INIT_LIST_HEAD (&kibnal_data.kib_sched_rxq);
- init_waitqueue_head (&kibnal_data.kib_sched_waitq);
-
- spin_lock_init (&kibnal_data.kib_tx_lock);
- INIT_LIST_HEAD (&kibnal_data.kib_idle_txs);
- INIT_LIST_HEAD (&kibnal_data.kib_idle_nblk_txs);
- init_waitqueue_head(&kibnal_data.kib_idle_tx_waitq);
-
- PORTAL_ALLOC (kibnal_data.kib_tx_descs,
- IBNAL_TX_MSGS * sizeof(kib_tx_t));
- if (kibnal_data.kib_tx_descs == NULL) {
- CERROR ("Can't allocate tx descs\n");
- goto failed;
- }
-
- /* lists/ptrs/locks initialised */
- kibnal_data.kib_init = IBNAL_INIT_DATA;
- /*****************************************************/
-
-
- process_id.pid = requested_pid;
- process_id.nid = kibnal_data.kib_nid;
-
- rc = lib_init(&kibnal_lib, nal, process_id,
- requested_limits, actual_limits);
- if (rc != PTL_OK) {
- CERROR("lib_init failed: error %d\n", rc);
- goto failed;
- }
-
- /* lib interface initialised */
- kibnal_data.kib_init = IBNAL_INIT_LIB;
- /*****************************************************/
-
- for (i = 0; i < IBNAL_N_SCHED; i++) {
- rc = kibnal_thread_start (kibnal_scheduler, (void *)i);
- if (rc != 0) {
- CERROR("Can't spawn openibnal scheduler[%d]: %d\n",
- i, rc);
- goto failed;
- }
- }
-
- rc = kibnal_thread_start (kibnal_connd, NULL);
- if (rc != 0) {
- CERROR ("Can't spawn openibnal connd: %d\n", rc);
- goto failed;
- }
-
- kibnal_data.kib_device = ib_device_get_by_index(0);
- if (kibnal_data.kib_device == NULL) {
- CERROR ("Can't open ib device 0\n");
- goto failed;
- }
-
- rc = ib_device_properties_get(kibnal_data.kib_device,
- &kibnal_data.kib_device_props);
- if (rc != 0) {
- CERROR ("Can't get device props: %d\n", rc);
- goto failed;
- }
-
- CDEBUG(D_NET, "Max Initiator: %d Max Responder %d\n",
- kibnal_data.kib_device_props.max_initiator_per_qp,
- kibnal_data.kib_device_props.max_responder_per_qp);
-
- kibnal_data.kib_port = 0;
- for (i = 1; i <= 2; i++) {
- rc = ib_port_properties_get(kibnal_data.kib_device, i,
- &kibnal_data.kib_port_props);
- if (rc == 0) {
- kibnal_data.kib_port = i;
- break;
- }
- }
- if (kibnal_data.kib_port == 0) {
- CERROR ("Can't find a port\n");
- goto failed;
- }
-
- rc = ib_pd_create(kibnal_data.kib_device,
- NULL, &kibnal_data.kib_pd);
- if (rc != 0) {
- CERROR ("Can't create PD: %d\n", rc);
- goto failed;
- }
-
- /* flag PD initialised */
- kibnal_data.kib_init = IBNAL_INIT_PD;
- /*****************************************************/
-#if IBNAL_FMR
- {
- const int pool_size = IBNAL_NTX + IBNAL_NTX_NBLK;
- struct ib_fmr_pool_param params = {
- .max_pages_per_fmr = PTL_MTU/PAGE_SIZE,
- .access = (IB_ACCESS_LOCAL_WRITE |
- IB_ACCESS_REMOTE_WRITE |
- IB_ACCESS_REMOTE_READ),
- .pool_size = pool_size,
- .dirty_watermark = (pool_size * 3)/4,
- .flush_function = NULL,
- .flush_arg = NULL,
- .cache = 1,
- };
- rc = ib_fmr_pool_create(kibnal_data.kib_pd, ¶ms,
- &kibnal_data.kib_fmr_pool);
- if (rc != 0) {
- CERROR ("Can't create FMR pool size %d: %d\n",
- pool_size, rc);
- goto failed;
- }
- }
-
- /* flag FMR pool initialised */
- kibnal_data.kib_init = IBNAL_INIT_FMR;
-#endif
- /*****************************************************/
-
- rc = kibnal_setup_tx_descs();
- if (rc != 0) {
- CERROR ("Can't register tx descs: %d\n", rc);
- goto failed;
- }
-
- /* flag TX descs initialised */
- kibnal_data.kib_init = IBNAL_INIT_TXD;
- /*****************************************************/
-
- {
- struct ib_cq_callback callback = {
- .context = IBNAL_CALLBACK_CTXT,
- .policy = IB_CQ_PROVIDER_REARM,
- .function = {
- .entry = kibnal_callback,
- },
- .arg = NULL,
- };
- int nentries = IBNAL_CQ_ENTRIES;
-
- rc = ib_cq_create (kibnal_data.kib_device,
- &nentries, &callback, NULL,
- &kibnal_data.kib_cq);
- if (rc != 0) {
- CERROR ("Can't create CQ: %d\n", rc);
- goto failed;
- }
-
- /* I only want solicited events */
- rc = ib_cq_request_notification(kibnal_data.kib_cq, 1);
- LASSERT (rc == 0);
- }
-
- /* flag CQ initialised */
- kibnal_data.kib_init = IBNAL_INIT_CQ;
- /*****************************************************/
-
- rc = libcfs_nal_cmd_register(OPENIBNAL, &kibnal_cmd, NULL);
- if (rc != 0) {
- CERROR ("Can't initialise command interface (rc = %d)\n", rc);
- goto failed;
- }
-
- /* flag everything initialised */
- kibnal_data.kib_init = IBNAL_INIT_ALL;
- /*****************************************************/
-
- printk(KERN_INFO "Lustre: OpenIB NAL loaded "
- "(initial mem %d)\n", pkmem);
-
- return (PTL_OK);
-
- failed:
- kibnal_api_shutdown (&kibnal_api);
- return (PTL_FAIL);
-}
-
-void __exit
-kibnal_module_fini (void)
-{
-#ifdef CONFIG_SYSCTL
- if (kibnal_tunables.kib_sysctl != NULL)
- unregister_sysctl_table (kibnal_tunables.kib_sysctl);
-#endif
- PtlNIFini(kibnal_ni);
-
- ptl_unregister_nal(OPENIBNAL);
-}
-
-int __init
-kibnal_module_init (void)
-{
- int rc;
-
- /* the following must be sizeof(int) for proc_dointvec() */
- LASSERT(sizeof (kibnal_tunables.kib_io_timeout) == sizeof (int));
-
- kibnal_api.nal_ni_init = kibnal_api_startup;
- kibnal_api.nal_ni_fini = kibnal_api_shutdown;
-
- /* Initialise dynamic tunables to defaults once only */
- kibnal_tunables.kib_io_timeout = IBNAL_IO_TIMEOUT;
-
- rc = ptl_register_nal(OPENIBNAL, &kibnal_api);
- if (rc != PTL_OK) {
- CERROR("Can't register IBNAL: %d\n", rc);
- return (-ENOMEM); /* or something... */
- }
-
- /* Pure gateways want the NAL started up at module load time... */
- rc = PtlNIInit(OPENIBNAL, LUSTRE_SRV_PTL_PID, NULL, NULL, &kibnal_ni);
- if (rc != PTL_OK && rc != PTL_IFACE_DUP) {
- ptl_unregister_nal(OPENIBNAL);
- return (-ENODEV);
- }
-
-#ifdef CONFIG_SYSCTL
- /* Press on regardless even if registering sysctl doesn't work */
- kibnal_tunables.kib_sysctl =
- register_sysctl_table (kibnal_top_ctl_table, 0);
-#endif
- return (0);
-}
-
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
-MODULE_DESCRIPTION("Kernel OpenIB NAL v0.01");
-MODULE_LICENSE("GPL");
-
-module_init(kibnal_module_init);
-module_exit(kibnal_module_fini);
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff