Whamcloud - gitweb
b=17087
[fs/lustre-release.git] / lnet / klnds / socklnd / socklnd.c
index 00a260a..1e8128c 100644 (file)
@@ -1,41 +1,49 @@
 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
  * vim:expandtab:shiftwidth=8:tabstop=8:
  *
- * Copyright (C) 2001, 2002 Cluster File Systems, Inc.
- *   Author: Zach Brown <zab@zabbo.net>
- *   Author: Peter J. Braam <braam@clusterfs.com>
- *   Author: Phil Schwan <phil@clusterfs.com>
- *   Author: Eric Barton <eric@bartonsoftware.com>
+ * GPL HEADER START
  *
- *   This file is part of Portals, http://www.sf.net/projects/sandiaportals/
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
- *   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.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * 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.
+ * This program 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 version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
  *
- *   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.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lnet/klnds/socklnd/socklnd.c
+ *
+ * Author: Zach Brown <zab@zabbo.net>
+ * Author: Peter J. Braam <braam@clusterfs.com>
+ * Author: Phil Schwan <phil@clusterfs.com>
+ * Author: Eric Barton <eric@bartonsoftware.com>
  */
 
 #include "socklnd.h"
 
-lnd_t the_ksocklnd = {
-        .lnd_type       = SOCKLND,
-        .lnd_startup    = ksocknal_startup,
-        .lnd_shutdown   = ksocknal_shutdown,
-        .lnd_ctl        = ksocknal_ctl,
-        .lnd_send       = ksocknal_send,
-        .lnd_recv       = ksocknal_recv,
-        .lnd_notify     = ksocknal_notify,
-        .lnd_accept     = ksocknal_accept,
-};
-
+lnd_t                   the_ksocklnd;
 ksock_nal_data_t        ksocknal_data;
 
 ksock_interface_t *
@@ -65,7 +73,7 @@ ksocknal_create_route (__u32 ipaddr, int port)
         if (route == NULL)
                 return (NULL);
 
-        atomic_set (&route->ksnr_refcount, 1);
+        cfs_atomic_set (&route->ksnr_refcount, 1);
         route->ksnr_peer = NULL;
         route->ksnr_retry_interval = 0;         /* OK to connect at any time */
         route->ksnr_ipaddr = ipaddr;
@@ -83,7 +91,7 @@ ksocknal_create_route (__u32 ipaddr, int port)
 void
 ksocknal_destroy_route (ksock_route_t *route)
 {
-        LASSERT (atomic_read(&route->ksnr_refcount) == 0);
+        LASSERT (cfs_atomic_read(&route->ksnr_refcount) == 0);
 
         if (route->ksnr_peer != NULL)
                 ksocknal_peer_decref(route->ksnr_peer);
@@ -99,7 +107,7 @@ ksocknal_create_peer (ksock_peer_t **peerp, lnet_ni_t *ni, lnet_process_id_t id)
 
         LASSERT (id.nid != LNET_NID_ANY);
         LASSERT (id.pid != LNET_PID_ANY);
-        LASSERT (!in_interrupt());
+        LASSERT (!cfs_in_interrupt());
 
         LIBCFS_ALLOC (peer, sizeof (*peer));
         if (peer == NULL)
@@ -109,22 +117,23 @@ ksocknal_create_peer (ksock_peer_t **peerp, lnet_ni_t *ni, lnet_process_id_t id)
 
         peer->ksnp_ni = ni;
         peer->ksnp_id = id;
-        atomic_set (&peer->ksnp_refcount, 1);   /* 1 ref for caller */
+        cfs_atomic_set (&peer->ksnp_refcount, 1);   /* 1 ref for caller */
         peer->ksnp_closing = 0;
         peer->ksnp_accepting = 0;
-        peer->ksnp_zc_next_cookie = 1;
         peer->ksnp_proto = NULL;
+        peer->ksnp_zc_next_cookie = SOCKNAL_KEEPALIVE_PING + 1;
+
         CFS_INIT_LIST_HEAD (&peer->ksnp_conns);
         CFS_INIT_LIST_HEAD (&peer->ksnp_routes);
         CFS_INIT_LIST_HEAD (&peer->ksnp_tx_queue);
         CFS_INIT_LIST_HEAD (&peer->ksnp_zc_req_list);
-        spin_lock_init(&peer->ksnp_lock);
+        cfs_spin_lock_init(&peer->ksnp_lock);
 
-        spin_lock_bh (&net->ksnn_lock);
+        cfs_spin_lock_bh (&net->ksnn_lock);
 
         if (net->ksnn_shutdown) {
-                spin_unlock_bh (&net->ksnn_lock);
-                
+                cfs_spin_unlock_bh (&net->ksnn_lock);
+
                 LIBCFS_FREE(peer, sizeof(*peer));
                 CERROR("Can't create peer: network shutdown\n");
                 return -ESHUTDOWN;
@@ -132,7 +141,7 @@ ksocknal_create_peer (ksock_peer_t **peerp, lnet_ni_t *ni, lnet_process_id_t id)
 
         net->ksnn_npeers++;
 
-        spin_unlock_bh (&net->ksnn_lock);
+        cfs_spin_unlock_bh (&net->ksnn_lock);
 
         *peerp = peer;
         return 0;
@@ -143,10 +152,10 @@ ksocknal_destroy_peer (ksock_peer_t *peer)
 {
         ksock_net_t    *net = peer->ksnp_ni->ni_data;
 
-        CDEBUG (D_NET, "peer %s %p deleted\n", 
+        CDEBUG (D_NET, "peer %s %p deleted\n",
                 libcfs_id2str(peer->ksnp_id), peer);
 
-        LASSERT (atomic_read (&peer->ksnp_refcount) == 0);
+        LASSERT (cfs_atomic_read (&peer->ksnp_refcount) == 0);
         LASSERT (peer->ksnp_accepting == 0);
         LASSERT (list_empty (&peer->ksnp_conns));
         LASSERT (list_empty (&peer->ksnp_routes));
@@ -159,9 +168,9 @@ ksocknal_destroy_peer (ksock_peer_t *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. */
-        spin_lock_bh (&net->ksnn_lock);
+        cfs_spin_lock_bh (&net->ksnn_lock);
         net->ksnn_npeers--;
-        spin_unlock_bh (&net->ksnn_lock);
+        cfs_spin_unlock_bh (&net->ksnn_lock);
 }
 
 ksock_peer_t *
@@ -185,8 +194,8 @@ ksocknal_find_peer_locked (lnet_ni_t *ni, lnet_process_id_t id)
                         continue;
 
                 CDEBUG(D_NET, "got peer [%p] -> %s (%d)\n",
-                       peer, libcfs_id2str(id), 
-                       atomic_read(&peer->ksnp_refcount));
+                       peer, libcfs_id2str(id),
+                       cfs_atomic_read(&peer->ksnp_refcount));
                 return (peer);
         }
         return (NULL);
@@ -197,11 +206,11 @@ ksocknal_find_peer (lnet_ni_t *ni, lnet_process_id_t id)
 {
         ksock_peer_t     *peer;
 
-        read_lock (&ksocknal_data.ksnd_global_lock);
+        cfs_read_lock (&ksocknal_data.ksnd_global_lock);
         peer = ksocknal_find_peer_locked (ni, id);
         if (peer != NULL)                       /* +1 ref for caller? */
                 ksocknal_peer_addref(peer);
-        read_unlock (&ksocknal_data.ksnd_global_lock);
+        cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
 
         return (peer);
 }
@@ -211,12 +220,20 @@ ksocknal_unlink_peer_locked (ksock_peer_t *peer)
 {
         int                i;
         __u32              ip;
+        ksock_interface_t *iface;
 
         for (i = 0; i < peer->ksnp_n_passive_ips; i++) {
                 LASSERT (i < LNET_MAX_INTERFACES);
                 ip = peer->ksnp_passive_ips[i];
 
-                ksocknal_ip2iface(peer->ksnp_ni, ip)->ksni_npeers--;
+                iface = ksocknal_ip2iface(peer->ksnp_ni, ip);
+                /* All IPs in peer->ksnp_passive_ips[] come from the
+                 * interface list, therefore the call must succeed. */
+                LASSERT (iface != NULL);
+
+                CDEBUG(D_NET, "peer=%p iface=%p ksni_nroutes=%d\n",
+                       peer, iface, iface->ksni_nroutes);
+                iface->ksni_npeers--;
         }
 
         LASSERT (list_empty(&peer->ksnp_conns));
@@ -229,7 +246,7 @@ ksocknal_unlink_peer_locked (ksock_peer_t *peer)
 }
 
 int
-ksocknal_get_peer_info (lnet_ni_t *ni, int index, 
+ksocknal_get_peer_info (lnet_ni_t *ni, int index,
                         lnet_process_id_t *id, __u32 *myip, __u32 *peer_ip, int *port,
                         int *conn_count, int *share_count)
 {
@@ -241,7 +258,7 @@ ksocknal_get_peer_info (lnet_ni_t *ni, int index,
         int                j;
         int                rc = -ENOENT;
 
-        read_lock (&ksocknal_data.ksnd_global_lock);
+        cfs_read_lock (&ksocknal_data.ksnd_global_lock);
 
         for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) {
 
@@ -299,7 +316,7 @@ ksocknal_get_peer_info (lnet_ni_t *ni, int index,
                 }
         }
  out:
-        read_unlock (&ksocknal_data.ksnd_global_lock);
+        cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
         return (rc);
 }
 
@@ -367,7 +384,7 @@ ksocknal_add_route_locked (ksock_peer_t *peer, ksock_route_t *route)
 
                 if (route2->ksnr_ipaddr == route->ksnr_ipaddr) {
                         CERROR ("Duplicate route %s %u.%u.%u.%u\n",
-                                libcfs_id2str(peer->ksnp_id), 
+                                libcfs_id2str(peer->ksnp_id),
                                 HIPQUAD(route->ksnr_ipaddr));
                         LBUG();
                 }
@@ -454,7 +471,7 @@ ksocknal_add_peer (lnet_ni_t *ni, lnet_process_id_t id, __u32 ipaddr, int port)
                 return (-ENOMEM);
         }
 
-        write_lock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_lock_bh (&ksocknal_data.ksnd_global_lock);
 
         /* always called with a ref on ni, so shutdown can't have started */
         LASSERT (((ksock_net_t *) ni->ni_data)->ksnn_shutdown == 0);
@@ -486,7 +503,7 @@ ksocknal_add_peer (lnet_ni_t *ni, lnet_process_id_t id, __u32 ipaddr, int port)
                 route2->ksnr_share_count++;
         }
 
-        write_unlock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_unlock_bh (&ksocknal_data.ksnd_global_lock);
 
         return (0);
 }
@@ -558,10 +575,10 @@ ksocknal_del_peer (lnet_ni_t *ni, lnet_process_id_t id, __u32 ip)
         int                i;
         int                rc = -ENOENT;
 
-        write_lock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_lock_bh (&ksocknal_data.ksnd_global_lock);
 
         if (id.nid != LNET_NID_ANY)
-                lo = hi = ksocknal_nid2peerlist(id.nid) - ksocknal_data.ksnd_peers;
+                lo = hi = (int)(ksocknal_nid2peerlist(id.nid) - ksocknal_data.ksnd_peers);
         else {
                 lo = 0;
                 hi = ksocknal_data.ksnd_peer_hash_size - 1;
@@ -595,7 +612,7 @@ ksocknal_del_peer (lnet_ni_t *ni, lnet_process_id_t id, __u32 ip)
                 }
         }
 
-        write_unlock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_unlock_bh (&ksocknal_data.ksnd_global_lock);
 
         ksocknal_txlist_done(ni, &zombies, 1);
 
@@ -611,7 +628,7 @@ ksocknal_get_conn_by_idx (lnet_ni_t *ni, int index)
         struct list_head  *ctmp;
         int                i;
 
-        read_lock (&ksocknal_data.ksnd_global_lock);
+        cfs_read_lock (&ksocknal_data.ksnd_global_lock);
 
         for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) {
                 list_for_each (ptmp, &ksocknal_data.ksnd_peers[i]) {
@@ -628,13 +645,13 @@ ksocknal_get_conn_by_idx (lnet_ni_t *ni, int index)
 
                                 conn = list_entry (ctmp, ksock_conn_t, ksnc_list);
                                 ksocknal_conn_addref(conn);
-                                read_unlock (&ksocknal_data.ksnd_global_lock);
+                                cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
                                 return (conn);
                         }
                 }
         }
 
-        read_unlock (&ksocknal_data.ksnd_global_lock);
+        cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
         return (NULL);
 }
 
@@ -663,10 +680,10 @@ ksocknal_choose_scheduler_locked (unsigned int irq)
 
         if (irq != 0) {                         /* Hardware NIC */
                 info->ksni_valid = 1;
-                info->ksni_sched = sched - ksocknal_data.ksnd_schedulers;
+                info->ksni_sched = (unsigned int)(sched - ksocknal_data.ksnd_schedulers);
 
                 /* no overflow... */
-                LASSERT (info->ksni_sched == sched - ksocknal_data.ksnd_schedulers);
+                LASSERT (info->ksni_sched == (unsigned int)(sched - ksocknal_data.ksnd_schedulers));
         }
 
         return (sched);
@@ -679,7 +696,7 @@ ksocknal_local_ipvec (lnet_ni_t *ni, __u32 *ipaddrs)
         int                i;
         int                nip;
 
-        read_lock (&ksocknal_data.ksnd_global_lock);
+        cfs_read_lock (&ksocknal_data.ksnd_global_lock);
 
         nip = net->ksnn_ninterfaces;
         LASSERT (nip <= LNET_MAX_INTERFACES);
@@ -687,16 +704,16 @@ ksocknal_local_ipvec (lnet_ni_t *ni, __u32 *ipaddrs)
         /* Only offer interfaces for additional connections if I have 
          * more than one. */
         if (nip < 2) {
-                read_unlock (&ksocknal_data.ksnd_global_lock);
+                cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
                 return 0;
         }
-        
+
         for (i = 0; i < nip; i++) {
                 ipaddrs[i] = net->ksnn_interfaces[i].ksni_ipaddr;
                 LASSERT (ipaddrs[i] != 0);
         }
 
-        read_unlock (&ksocknal_data.ksnd_global_lock);
+        cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
         return (nip);
 }
 
@@ -735,7 +752,7 @@ ksocknal_match_peerip (ksock_interface_t *iface, __u32 *ips, int nips)
 int
 ksocknal_select_ips(ksock_peer_t *peer, __u32 *peerips, int n_peerips)
 {
-        rwlock_t           *global_lock = &ksocknal_data.ksnd_global_lock;
+        cfs_rwlock_t       *global_lock = &ksocknal_data.ksnd_global_lock;
         ksock_net_t        *net = peer->ksnp_ni->ni_data;
         ksock_interface_t  *iface;
         ksock_interface_t  *best_iface;
@@ -757,7 +774,7 @@ ksocknal_select_ips(ksock_peer_t *peer, __u32 *peerips, int n_peerips)
         /* Also note that I'm not going to return more than n_peerips
          * interfaces, even if I have more myself */
 
-        write_lock_bh (global_lock);
+        cfs_write_lock_bh (global_lock);
 
         LASSERT (n_peerips <= LNET_MAX_INTERFACES);
         LASSERT (net->ksnn_ninterfaces <= LNET_MAX_INTERFACES);
@@ -833,7 +850,7 @@ ksocknal_select_ips(ksock_peer_t *peer, __u32 *peerips, int n_peerips)
         /* Overwrite input peer IP addresses */
         memcpy(peerips, peer->ksnp_passive_ips, n_ips * sizeof(*peerips));
 
-        write_unlock_bh (global_lock);
+        cfs_write_unlock_bh (global_lock);
 
         return (n_ips);
 }
@@ -843,7 +860,7 @@ ksocknal_create_routes(ksock_peer_t *peer, int port,
                        __u32 *peer_ipaddrs, int npeer_ipaddrs)
 {
         ksock_route_t      *newroute = NULL;
-        rwlock_t           *global_lock = &ksocknal_data.ksnd_global_lock;
+        cfs_rwlock_t       *global_lock = &ksocknal_data.ksnd_global_lock;
         lnet_ni_t          *ni = peer->ksnp_ni;
         ksock_net_t        *net = ni->ni_data;
         struct list_head   *rtmp;
@@ -861,28 +878,28 @@ ksocknal_create_routes(ksock_peer_t *peer, int port,
          * expecting to be dealing with small numbers of interfaces, so the
          * O(n**3)-ness here shouldn't matter */
 
-        write_lock_bh (global_lock);
+        cfs_write_lock_bh (global_lock);
 
         if (net->ksnn_ninterfaces < 2) {
                 /* Only create additional connections 
                  * if I have > 1 interface */
-                write_unlock_bh (global_lock);
+                cfs_write_unlock_bh (global_lock);
                 return;
         }
-        
+
         LASSERT (npeer_ipaddrs <= LNET_MAX_INTERFACES);
 
         for (i = 0; i < npeer_ipaddrs; i++) {
                 if (newroute != NULL) {
                         newroute->ksnr_ipaddr = peer_ipaddrs[i];
                 } else {
-                        write_unlock_bh (global_lock);
+                        cfs_write_unlock_bh (global_lock);
 
                         newroute = ksocknal_create_route(peer_ipaddrs[i], port);
                         if (newroute == NULL)
                                 return;
 
-                        write_lock_bh (global_lock);
+                        cfs_write_lock_bh (global_lock);
                 }
 
                 if (peer->ksnp_closing) {
@@ -950,7 +967,7 @@ ksocknal_create_routes(ksock_peer_t *peer, int port,
                 newroute = NULL;
         }
 
-        write_unlock_bh (global_lock);
+        cfs_write_unlock_bh (global_lock);
         if (newroute != NULL)
                 ksocknal_route_decref(newroute);
 }
@@ -978,21 +995,22 @@ ksocknal_accept (lnet_ni_t *ni, cfs_socket_t *sock)
         cr->ksncr_ni   = ni;
         cr->ksncr_sock = sock;
 
-        spin_lock_bh (&ksocknal_data.ksnd_connd_lock);
+        cfs_spin_lock_bh (&ksocknal_data.ksnd_connd_lock);
 
         list_add_tail(&cr->ksncr_list, &ksocknal_data.ksnd_connd_connreqs);
         cfs_waitq_signal(&ksocknal_data.ksnd_connd_waitq);
-                        
-        spin_unlock_bh (&ksocknal_data.ksnd_connd_lock);
+
+        cfs_spin_unlock_bh (&ksocknal_data.ksnd_connd_lock);
         return 0;
 }
 
 int
-ksocknal_connecting (ksock_peer_t *peer, __u32 ipaddr) 
+ksocknal_connecting (ksock_peer_t *peer, __u32 ipaddr)
 {
         ksock_route_t   *route;
-        
-        list_for_each_entry (route, &peer->ksnp_routes, ksnr_list) {
+
+        cfs_list_for_each_entry_typed (route, &peer->ksnp_routes,
+                                       ksock_route_t, ksnr_list) {
 
                 if (route->ksnr_ipaddr == ipaddr)
                         return route->ksnr_connecting;
@@ -1001,10 +1019,10 @@ ksocknal_connecting (ksock_peer_t *peer, __u32 ipaddr)
 }
 
 int
-ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route, 
+ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
                       cfs_socket_t *sock, int type)
 {
-        rwlock_t          *global_lock = &ksocknal_data.ksnd_global_lock;
+        cfs_rwlock_t      *global_lock = &ksocknal_data.ksnd_global_lock;
         CFS_LIST_HEAD     (zombies);
         lnet_process_id_t  peerid;
         struct list_head  *tmp;
@@ -1017,6 +1035,7 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
         ksock_hello_msg_t *hello;
         unsigned int       irq;
         ksock_tx_t        *tx;
+        ksock_tx_t        *txtmp;
         int                rc;
         int                active;
         char              *warn = NULL;
@@ -1034,23 +1053,25 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
         }
 
         memset (conn, 0, sizeof (*conn));
+
         conn->ksnc_peer = NULL;
         conn->ksnc_route = NULL;
         conn->ksnc_sock = sock;
-        atomic_set (&conn->ksnc_sock_refcount, 1); /* 1 ref for conn */
+        /* 2 ref, 1 for conn, another extra ref prevents socket
+         * being closed before establishment of connection */
+        cfs_atomic_set (&conn->ksnc_sock_refcount, 2);
         conn->ksnc_type = type;
         ksocknal_lib_save_callback(sock, conn);
-        atomic_set (&conn->ksnc_conn_refcount, 1); /* 1 ref for me */
+        cfs_atomic_set (&conn->ksnc_conn_refcount, 1); /* 1 ref for me */
 
-        conn->ksnc_zc_capable = ksocknal_lib_zc_capable(sock);
         conn->ksnc_rx_ready = 0;
         conn->ksnc_rx_scheduled = 0;
 
         CFS_INIT_LIST_HEAD (&conn->ksnc_tx_queue);
         conn->ksnc_tx_ready = 0;
         conn->ksnc_tx_scheduled = 0;
-        conn->ksnc_tx_mono = NULL;
-        atomic_set (&conn->ksnc_tx_nob, 0);
+        conn->ksnc_tx_carrier = NULL;
+        cfs_atomic_set (&conn->ksnc_tx_nob, 0);
 
         LIBCFS_ALLOC(hello, offsetof(ksock_hello_msg_t,
                                      kshm_ips[LNET_MAX_INTERFACES]));
@@ -1077,15 +1098,17 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
                 hello->kshm_nips = ksocknal_local_ipvec(ni, hello->kshm_ips);
                 peerid = peer->ksnp_id;
 
-                write_lock_bh(global_lock);
+                cfs_write_lock_bh(global_lock);
                 conn->ksnc_proto = peer->ksnp_proto;
-                write_unlock_bh(global_lock);
-                
+                cfs_write_unlock_bh(global_lock);
+
                 if (conn->ksnc_proto == NULL) {
-                        conn->ksnc_proto = &ksocknal_protocol_v2x;
+                         conn->ksnc_proto = &ksocknal_protocol_v3x;
 #if SOCKNAL_VERSION_DEBUG
-                        if (*ksocknal_tunables.ksnd_protocol != 2)
-                                conn->ksnc_proto = &ksocknal_protocol_v1x;
+                         if (*ksocknal_tunables.ksnd_protocol == 2)
+                                 conn->ksnc_proto = &ksocknal_protocol_v2x;
+                         else if (*ksocknal_tunables.ksnd_protocol == 1)
+                                 conn->ksnc_proto = &ksocknal_protocol_v1x;
 #endif
                 }
 
@@ -1110,13 +1133,13 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
 
         if (active) {
                 ksocknal_peer_addref(peer);
-                write_lock_bh (global_lock);
+                cfs_write_lock_bh (global_lock);
         } else {
                 rc = ksocknal_create_peer(&peer, ni, peerid);
                 if (rc != 0)
                         goto failed_1;
 
-                write_lock_bh (global_lock);
+                cfs_write_lock_bh (global_lock);
 
                 /* called with a ref on ni, so shutdown can't have started */
                 LASSERT (((ksock_net_t *) ni->ni_data)->ksnn_shutdown == 0);
@@ -1135,7 +1158,7 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
                 /* +1 ref for me */
                 ksocknal_peer_addref(peer);
                 peer->ksnp_accepting++;
-                
+
                 /* Am I already connecting to this guy?  Resolve in
                  * favour of higher NID... */
                 if (peerid.nid < ni->ni_nid &&
@@ -1154,13 +1177,13 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
                 goto failed_2;
         }
 
-        if (peer->ksnp_proto == NULL) { 
+        if (peer->ksnp_proto == NULL) {
                 /* Never connected before.
                  * NB recv_hello may have returned EPROTO to signal my peer
                  * wants a different protocol than the one I asked for.
                  */
                 LASSERT (list_empty(&peer->ksnp_conns));
-                
+
                 peer->ksnp_proto = conn->ksnc_proto;
                 peer->ksnp_incarnation = incarnation;
         }
@@ -1172,7 +1195,7 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
 
                 peer->ksnp_proto = NULL;
                 rc = ESTALE;
-                warn = peer->ksnp_incarnation != incarnation ? 
+                warn = peer->ksnp_incarnation != incarnation ?
                        "peer rebooted" :
                        "wrong proto version";
                 goto failed_2;
@@ -1240,34 +1263,36 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
 
         conn->ksnc_peer = peer;                 /* conn takes my ref on peer */
         peer->ksnp_last_alive = cfs_time_current();
+        peer->ksnp_send_keepalive = 0;
         peer->ksnp_error = 0;
 
         sched = ksocknal_choose_scheduler_locked (irq);
         sched->kss_nconns++;
         conn->ksnc_scheduler = sched;
 
+        conn->ksnc_tx_last_post = cfs_time_current();
         /* Set the deadline for the outgoing HELLO to drain */
-        conn->ksnc_tx_bufnob = SOCK_WMEM_QUEUED(sock);
+        conn->ksnc_tx_bufnob = libcfs_sock_wmem_queued(sock);
         conn->ksnc_tx_deadline = cfs_time_shift(*ksocknal_tunables.ksnd_timeout);
-        mb();       /* order with adding to peer's conn list */
+        cfs_mb();   /* order with adding to peer's conn list */
 
         list_add (&conn->ksnc_list, &peer->ksnp_conns);
         ksocknal_conn_addref(conn);
 
         ksocknal_new_packet(conn, 0);
 
-        /* Take all the packets blocking for a connection.
-         * NB, it might be nicer to share these blocked packets among any
-         * other connections that are becoming established. */
-        while (!list_empty (&peer->ksnp_tx_queue)) {
-                tx = list_entry (peer->ksnp_tx_queue.next,
-                                 ksock_tx_t, tx_list);
+        conn->ksnc_zc_capable = ksocknal_lib_zc_capable(conn);
+
+        /* Take packets blocking for this connection. */
+        list_for_each_entry_safe(tx, txtmp, &peer->ksnp_tx_queue, tx_list) {
+                if (conn->ksnc_proto->pro_match_tx(conn, tx, tx->tx_nonblk) == SOCKNAL_MATCH_NO)
+                                continue;
 
                 list_del (&tx->tx_list);
                 ksocknal_queue_tx_locked (tx, conn);
         }
 
-        write_unlock_bh (global_lock);
+        cfs_write_unlock_bh (global_lock);
 
         /* We've now got a new connection.  Any errors from here on are just
          * like "normal" comms errors and we close the connection normally.
@@ -1295,7 +1320,7 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
                                                        hello->kshm_nips);
                 rc = ksocknal_send_hello(ni, conn, peerid.nid, hello);
         }
-        
+
         LIBCFS_FREE(hello, offsetof(ksock_hello_msg_t,
                                     kshm_ips[LNET_MAX_INTERFACES]));
 
@@ -1307,7 +1332,7 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
         if (rc == 0)
                 rc = ksocknal_lib_setup_sock(sock);
 
-        write_lock_bh(global_lock);
+        cfs_write_lock_bh(global_lock);
 
         /* NB my callbacks block while I hold ksnd_global_lock */
         ksocknal_lib_set_callback(sock, conn);
@@ -1315,12 +1340,12 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
         if (!active)
                 peer->ksnp_accepting--;
 
-        write_unlock_bh(global_lock);
+        cfs_write_unlock_bh(global_lock);
 
         if (rc != 0) {
-                write_lock_bh(global_lock);
+                cfs_write_lock_bh(global_lock);
                 ksocknal_close_conn_locked(conn, rc);
-                write_unlock_bh(global_lock);
+                cfs_write_unlock_bh(global_lock);
         } else if (ksocknal_connsock_addref(conn) == 0) {
                 /* Allow I/O to proceed. */
                 ksocknal_read_callback(conn);
@@ -1328,6 +1353,7 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
                 ksocknal_connsock_decref(conn);
         }
 
+        ksocknal_connsock_decref(conn);
         ksocknal_conn_decref(conn);
         return rc;
 
@@ -1339,8 +1365,8 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
                 list_del_init(&peer->ksnp_tx_queue);
                 ksocknal_unlink_peer_locked(peer);
         }
-        
-        write_unlock_bh (global_lock);
+
+        cfs_write_unlock_bh (global_lock);
 
         if (warn != NULL) {
                 if (rc < 0)
@@ -1360,11 +1386,11 @@ ksocknal_create_conn (lnet_ni_t *ni, ksock_route_t *route,
                         ksocknal_send_hello(ni, conn, peerid.nid, hello);
                 }
 
-                write_lock_bh(global_lock);
+                cfs_write_lock_bh(global_lock);
                 peer->ksnp_accepting--;
-                write_unlock_bh(global_lock);
+                cfs_write_unlock_bh(global_lock);
         }
-        
+
         ksocknal_txlist_done(ni, &zombies, 1);
         ksocknal_peer_decref(peer);
 
@@ -1429,6 +1455,21 @@ ksocknal_close_conn_locked (ksock_conn_t *conn, int error)
         if (list_empty (&peer->ksnp_conns)) {
                 /* No more connections to this peer */
 
+                if (!list_empty(&peer->ksnp_tx_queue)) {
+                        ksock_tx_t *tx;
+
+                        LASSERT (conn->ksnc_proto == &ksocknal_protocol_v3x);
+
+                        /* throw them to the last connection...,
+                         * these TXs will be send to /dev/null by scheduler */
+                        list_for_each_entry(tx, &peer->ksnp_tx_queue, tx_list)
+                                ksocknal_tx_prep(conn, tx);
+
+                        spin_lock_bh(&conn->ksnc_scheduler->kss_lock);
+                        list_splice_init(&peer->ksnp_tx_queue, &conn->ksnc_tx_queue);
+                        spin_unlock_bh(&conn->ksnc_scheduler->kss_lock);
+                }
+
                 peer->ksnp_proto = NULL;        /* renegotiate protocol version */
                 peer->ksnp_error = error;       /* stash last conn close reason */
 
@@ -1439,12 +1480,12 @@ ksocknal_close_conn_locked (ksock_conn_t *conn, int error)
                 }
         }
 
-        spin_lock_bh (&ksocknal_data.ksnd_reaper_lock);
+        cfs_spin_lock_bh (&ksocknal_data.ksnd_reaper_lock);
 
         list_add_tail (&conn->ksnc_list, &ksocknal_data.ksnd_deathrow_conns);
         cfs_waitq_signal (&ksocknal_data.ksnd_reaper_waitq);
 
-        spin_unlock_bh (&ksocknal_data.ksnd_reaper_lock);
+        cfs_spin_unlock_bh (&ksocknal_data.ksnd_reaper_lock);
 }
 
 void
@@ -1456,20 +1497,20 @@ ksocknal_peer_failed (ksock_peer_t *peer)
         /* There has been a connection failure or comms error; but I'll only
          * tell LNET I think the peer is dead if it's to another kernel and
          * there are no connections or connection attempts in existance. */
-        
-        read_lock (&ksocknal_data.ksnd_global_lock);
+
+        cfs_read_lock (&ksocknal_data.ksnd_global_lock);
 
         if ((peer->ksnp_id.pid & LNET_PID_USERFLAG) == 0 &&
             list_empty(&peer->ksnp_conns) &&
             peer->ksnp_accepting == 0 &&
             ksocknal_find_connecting_route_locked(peer) == NULL) {
                 notify = 1;
-                last_alive = cfs_time_current_sec() -
+                last_alive = (time_t) (cfs_time_current_sec() -
                         cfs_duration_sec(cfs_time_current() -
-                                         peer->ksnp_last_alive);
+                                         peer->ksnp_last_alive));
         }
-        
-        read_unlock (&ksocknal_data.ksnd_global_lock);
+
+        cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
 
         if (notify)
                 lnet_notify (peer->ksnp_ni, peer->ksnp_id.nid, 0,
@@ -1477,6 +1518,42 @@ ksocknal_peer_failed (ksock_peer_t *peer)
 }
 
 void
+ksocknal_finalize_zcreq(ksock_conn_t *conn)
+{
+        ksock_peer_t     *peer = conn->ksnc_peer;
+        ksock_tx_t       *tx;
+        ksock_tx_t       *tmp;
+        CFS_LIST_HEAD    (zlist);
+
+        /* NB safe to finalize TXs because closing of socket will
+         * abort all buffered data */
+        LASSERT (conn->ksnc_sock == NULL);
+
+        cfs_spin_lock(&peer->ksnp_lock);
+
+        cfs_list_for_each_entry_safe_typed(tx, tmp, &peer->ksnp_zc_req_list,
+                                           ksock_tx_t, tx_zc_list) {
+                if (tx->tx_conn != conn)
+                        continue;
+
+                LASSERT (tx->tx_msg.ksm_zc_cookies[0] != 0);
+
+                tx->tx_msg.ksm_zc_cookies[0] = 0;
+                list_del(&tx->tx_zc_list);
+                list_add(&tx->tx_zc_list, &zlist);
+        }
+
+        cfs_spin_unlock(&peer->ksnp_lock);
+
+        while (!list_empty(&zlist)) {
+                tx = list_entry(zlist.next, ksock_tx_t, tx_zc_list);
+
+                list_del(&tx->tx_zc_list);
+                ksocknal_tx_decref(tx);
+        }
+}
+
+void
 ksocknal_terminate_conn (ksock_conn_t *conn)
 {
         /* This gets called by the reaper (guaranteed thread context) to
@@ -1486,22 +1563,19 @@ ksocknal_terminate_conn (ksock_conn_t *conn)
         ksock_peer_t     *peer = conn->ksnc_peer;
         ksock_sched_t    *sched = conn->ksnc_scheduler;
         int               failed = 0;
-        struct list_head *tmp;
-        struct list_head *nxt;
-        ksock_tx_t       *tx;
-        LIST_HEAD        (zlist);
 
         LASSERT(conn->ksnc_closing);
 
         /* wake up the scheduler to "send" all remaining packets to /dev/null */
-        spin_lock_bh (&sched->kss_lock);
+        cfs_spin_lock_bh (&sched->kss_lock);
+
+        /* a closing conn is always ready to tx */
+        conn->ksnc_tx_ready = 1;
 
         if (!conn->ksnc_tx_scheduled &&
             !list_empty(&conn->ksnc_tx_queue)){
                 list_add_tail (&conn->ksnc_tx_list,
                                &sched->kss_tx_conns);
-                /* a closing conn is always ready to tx */
-                conn->ksnc_tx_ready = 1;
                 conn->ksnc_tx_scheduled = 1;
                 /* extra ref for scheduler */
                 ksocknal_conn_addref(conn);
@@ -1509,34 +1583,10 @@ ksocknal_terminate_conn (ksock_conn_t *conn)
                 cfs_waitq_signal (&sched->kss_waitq);
         }
 
-        spin_unlock_bh (&sched->kss_lock);
-
-        spin_lock(&peer->ksnp_lock);
-
-        list_for_each_safe(tmp, nxt, &peer->ksnp_zc_req_list) {
-                tx = list_entry(tmp, ksock_tx_t, tx_zc_list);
-
-                if (tx->tx_conn != conn)
-                        continue;
-
-                LASSERT (tx->tx_msg.ksm_zc_req_cookie != 0);
-
-                tx->tx_msg.ksm_zc_req_cookie = 0;
-                list_del(&tx->tx_zc_list);
-                list_add(&tx->tx_zc_list, &zlist);
-        }
-
-        spin_unlock(&peer->ksnp_lock);
-
-        list_for_each_safe(tmp, nxt, &zlist) {
-                tx = list_entry(tmp, ksock_tx_t, tx_zc_list);
-
-                list_del(&tx->tx_zc_list);
-                ksocknal_tx_decref(tx);
-        }
+        cfs_spin_unlock_bh (&sched->kss_lock);
 
         /* serialise with callbacks */
-        write_lock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_lock_bh (&ksocknal_data.ksnd_global_lock);
 
         ksocknal_lib_reset_callback(conn->ksnc_sock, conn);
 
@@ -1551,7 +1601,7 @@ ksocknal_terminate_conn (ksock_conn_t *conn)
                 peer->ksnp_error = 0;     /* avoid multiple notifications */
         }
 
-        write_unlock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_unlock_bh (&ksocknal_data.ksnd_global_lock);
 
         if (failed)
                 ksocknal_peer_failed(peer);
@@ -1569,13 +1619,13 @@ ksocknal_queue_zombie_conn (ksock_conn_t *conn)
 {
         /* Queue the conn for the reaper to destroy */
 
-        LASSERT (atomic_read(&conn->ksnc_conn_refcount) == 0);
-        spin_lock_bh (&ksocknal_data.ksnd_reaper_lock);
+        LASSERT (cfs_atomic_read(&conn->ksnc_conn_refcount) == 0);
+        cfs_spin_lock_bh (&ksocknal_data.ksnd_reaper_lock);
 
         list_add_tail(&conn->ksnc_list, &ksocknal_data.ksnd_zombie_conns);
         cfs_waitq_signal(&ksocknal_data.ksnd_reaper_waitq);
-        
-        spin_unlock_bh (&ksocknal_data.ksnd_reaper_lock);
+
+        cfs_spin_unlock_bh (&ksocknal_data.ksnd_reaper_lock);
 }
 
 void
@@ -1584,8 +1634,8 @@ ksocknal_destroy_conn (ksock_conn_t *conn)
         /* Final coup-de-grace of the reaper */
         CDEBUG (D_NET, "connection %p\n", conn);
 
-        LASSERT (atomic_read (&conn->ksnc_conn_refcount) == 0);
-        LASSERT (atomic_read (&conn->ksnc_sock_refcount) == 0);
+        LASSERT (cfs_atomic_read (&conn->ksnc_conn_refcount) == 0);
+        LASSERT (cfs_atomic_read (&conn->ksnc_sock_refcount) == 0);
         LASSERT (conn->ksnc_sock == NULL);
         LASSERT (conn->ksnc_route == NULL);
         LASSERT (!conn->ksnc_tx_scheduled);
@@ -1599,7 +1649,7 @@ ksocknal_destroy_conn (ksock_conn_t *conn)
                        ", ip %d.%d.%d.%d:%d, with error\n",
                        libcfs_id2str(conn->ksnc_peer->ksnp_id),
                        HIPQUAD(conn->ksnc_ipaddr), conn->ksnc_port);
-                lnet_finalize (conn->ksnc_peer->ksnp_ni, 
+                lnet_finalize (conn->ksnc_peer->ksnp_ni,
                                conn->ksnc_cookie, -EIO);
                 break;
         case SOCKNAL_RX_LNET_HEADER:
@@ -1663,11 +1713,11 @@ ksocknal_close_conn_and_siblings (ksock_conn_t *conn, int why)
         __u32             ipaddr = conn->ksnc_ipaddr;
         int               count;
 
-        write_lock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_lock_bh (&ksocknal_data.ksnd_global_lock);
 
         count = ksocknal_close_peer_conns_locked (peer, ipaddr, why);
 
-        write_unlock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_unlock_bh (&ksocknal_data.ksnd_global_lock);
 
         return (count);
 }
@@ -1683,10 +1733,10 @@ ksocknal_close_matching_conns (lnet_process_id_t id, __u32 ipaddr)
         int                 i;
         int                 count = 0;
 
-        write_lock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_lock_bh (&ksocknal_data.ksnd_global_lock);
 
         if (id.nid != LNET_NID_ANY)
-                lo = hi = ksocknal_nid2peerlist(id.nid) - ksocknal_data.ksnd_peers;
+                lo = hi = (int)(ksocknal_nid2peerlist(id.nid) - ksocknal_data.ksnd_peers);
         else {
                 lo = 0;
                 hi = ksocknal_data.ksnd_peer_hash_size - 1;
@@ -1705,7 +1755,7 @@ ksocknal_close_matching_conns (lnet_process_id_t id, __u32 ipaddr)
                 }
         }
 
-        write_unlock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_unlock_bh (&ksocknal_data.ksnd_global_lock);
 
         /* wildcards always succeed */
         if (id.nid == LNET_NID_ANY || id.pid == LNET_PID_ANY || ipaddr == 0)
@@ -1719,9 +1769,12 @@ ksocknal_notify (lnet_ni_t *ni, lnet_nid_t gw_nid, int alive)
 {
         /* The router is telling me she's been notified of a change in
          * gateway state.... */
-        lnet_process_id_t  id = {.nid = gw_nid, .pid = LNET_PID_ANY};
+        lnet_process_id_t  id = {0};
+
+        id.nid = gw_nid;
+        id.pid = LNET_PID_ANY;
 
-        CDEBUG (D_NET, "gw %s %s\n", libcfs_nid2str(gw_nid), 
+        CDEBUG (D_NET, "gw %s %s\n", libcfs_nid2str(gw_nid),
                 alive ? "up" : "down");
 
         if (!alive) {
@@ -1743,7 +1796,7 @@ ksocknal_push_peer (ksock_peer_t *peer)
         ksock_conn_t     *conn;
 
         for (index = 0; ; index++) {
-                read_lock (&ksocknal_data.ksnd_global_lock);
+                cfs_read_lock (&ksocknal_data.ksnd_global_lock);
 
                 i = 0;
                 conn = NULL;
@@ -1756,7 +1809,7 @@ ksocknal_push_peer (ksock_peer_t *peer)
                         }
                 }
 
-                read_unlock (&ksocknal_data.ksnd_global_lock);
+                cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
 
                 if (conn == NULL)
                         break;
@@ -1778,7 +1831,7 @@ ksocknal_push (lnet_ni_t *ni, lnet_process_id_t id)
 
         for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) {
                 for (j = 0; ; j++) {
-                        read_lock (&ksocknal_data.ksnd_global_lock);
+                        cfs_read_lock (&ksocknal_data.ksnd_global_lock);
 
                         index = 0;
                         peer = NULL;
@@ -1801,7 +1854,7 @@ ksocknal_push (lnet_ni_t *ni, lnet_process_id_t id)
                                 }
                         }
 
-                        read_unlock (&ksocknal_data.ksnd_global_lock);
+                        cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
 
                         if (peer != NULL) {
                                 rc = 0;
@@ -1832,7 +1885,7 @@ ksocknal_add_interface(lnet_ni_t *ni, __u32 ipaddress, __u32 netmask)
             netmask == 0)
                 return (-EINVAL);
 
-        write_lock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_lock_bh (&ksocknal_data.ksnd_global_lock);
 
         iface = ksocknal_ip2iface(ni, ipaddress);
         if (iface != NULL) {
@@ -1869,7 +1922,7 @@ ksocknal_add_interface(lnet_ni_t *ni, __u32 ipaddress, __u32 netmask)
                 /* NB only new connections will pay attention to the new interface! */
         }
 
-        write_unlock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_unlock_bh (&ksocknal_data.ksnd_global_lock);
 
         return (rc);
 }
@@ -1927,7 +1980,7 @@ ksocknal_del_interface(lnet_ni_t *ni, __u32 ipaddress)
         int                i;
         int                j;
 
-        write_lock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_lock_bh (&ksocknal_data.ksnd_global_lock);
 
         for (i = 0; i < net->ksnn_ninterfaces; i++) {
                 this_ip = net->ksnn_interfaces[i].ksni_ipaddr;
@@ -1956,7 +2009,7 @@ ksocknal_del_interface(lnet_ni_t *ni, __u32 ipaddress)
                 }
         }
 
-        write_unlock_bh (&ksocknal_data.ksnd_global_lock);
+        cfs_write_unlock_bh (&ksocknal_data.ksnd_global_lock);
 
         return (rc);
 }
@@ -1964,6 +2017,7 @@ ksocknal_del_interface(lnet_ni_t *ni, __u32 ipaddress)
 int
 ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg)
 {
+        lnet_process_id_t id = {0}; 
         struct libcfs_ioctl_data *data = arg;
         int rc;
 
@@ -1972,10 +2026,9 @@ ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg)
                 ksock_net_t       *net = ni->ni_data;
                 ksock_interface_t *iface;
 
-                read_lock (&ksocknal_data.ksnd_global_lock);
+                cfs_read_lock (&ksocknal_data.ksnd_global_lock);
 
-                if (data->ioc_count < 0 ||
-                    data->ioc_count >= net->ksnn_ninterfaces) {
+                if (data->ioc_count >= (__u32)net->ksnn_ninterfaces) {
                         rc = -ENOENT;
                 } else {
                         rc = 0;
@@ -1987,7 +2040,7 @@ ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg)
                         data->ioc_u32[3] = iface->ksni_nroutes;
                 }
 
-                read_unlock (&ksocknal_data.ksnd_global_lock);
+                cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
                 return rc;
         }
 
@@ -1997,11 +2050,10 @@ ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg)
                                               data->ioc_u32[1]); /* net mask */
 
         case IOC_LIBCFS_DEL_INTERFACE:
-                return ksocknal_del_interface(ni, 
+                return ksocknal_del_interface(ni,
                                               data->ioc_u32[0]); /* IP address */
 
         case IOC_LIBCFS_GET_PEER: {
-                lnet_process_id_t id = {0,};
                 __u32            myip = 0;
                 __u32            ip = 0;
                 int              port = 0;
@@ -2013,7 +2065,7 @@ ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg)
                                             &conn_count,  &share_count);
                 if (rc != 0)
                         return rc;
-                        
+
                 data->ioc_nid    = id.nid;
                 data->ioc_count  = share_count;
                 data->ioc_u32[0] = ip;
@@ -2024,19 +2076,19 @@ ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg)
                 return 0;
         }
 
-        case IOC_LIBCFS_ADD_PEER: {
-                lnet_process_id_t  id = {.nid = data->ioc_nid,
-                                         .pid = LUSTRE_SRV_LNET_PID};
+        case IOC_LIBCFS_ADD_PEER:
+                id.nid = data->ioc_nid;
+                id.pid = LUSTRE_SRV_LNET_PID;
                 return ksocknal_add_peer (ni, id,
                                           data->ioc_u32[0], /* IP */
                                           data->ioc_u32[1]); /* port */
-        }
-        case IOC_LIBCFS_DEL_PEER: {
-                lnet_process_id_t  id = {.nid = data->ioc_nid,
-                                         .pid = LNET_PID_ANY};
+
+        case IOC_LIBCFS_DEL_PEER:
+                id.nid = data->ioc_nid;
+                id.pid = LNET_PID_ANY;
                 return ksocknal_del_peer (ni, id,
                                           data->ioc_u32[0]); /* IP */
-        }
+
         case IOC_LIBCFS_GET_CONN: {
                 int           txmem;
                 int           rxmem;
@@ -2055,37 +2107,35 @@ ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg)
                 data->ioc_u32[1] = conn->ksnc_port;
                 data->ioc_u32[2] = conn->ksnc_myipaddr;
                 data->ioc_u32[3] = conn->ksnc_type;
-                data->ioc_u32[4] = conn->ksnc_scheduler -
-                                   ksocknal_data.ksnd_schedulers;
+                data->ioc_u32[4] = (__u32)(conn->ksnc_scheduler -
+                                   ksocknal_data.ksnd_schedulers);
                 data->ioc_u32[5] = rxmem;
                 data->ioc_u32[6] = conn->ksnc_peer->ksnp_id.pid;
                 ksocknal_conn_decref(conn);
                 return 0;
         }
 
-        case IOC_LIBCFS_CLOSE_CONNECTION: {
-                lnet_process_id_t  id = {.nid = data->ioc_nid,
-                                        .pid = LNET_PID_ANY};
-
+        case IOC_LIBCFS_CLOSE_CONNECTION:
+                id.nid = data->ioc_nid;
+                id.pid = LNET_PID_ANY;
                 return ksocknal_close_matching_conns (id,
                                                       data->ioc_u32[0]);
-        }
+
         case IOC_LIBCFS_REGISTER_MYNID:
                 /* Ignore if this is a noop */
-               if (data->ioc_nid == ni->ni_nid)
-                       return 0;
-
-               CERROR("obsolete IOC_LIBCFS_REGISTER_MYNID: %s(%s)\n",
-                      libcfs_nid2str(data->ioc_nid),
-                      libcfs_nid2str(ni->ni_nid));
-               return -EINVAL;
-
-        case IOC_LIBCFS_PUSH_CONNECTION: {
-                lnet_process_id_t  id = {.nid = data->ioc_nid,
-                                        .pid = LNET_PID_ANY};
-                
+                if (data->ioc_nid == ni->ni_nid)
+                        return 0;
+
+                CERROR("obsolete IOC_LIBCFS_REGISTER_MYNID: %s(%s)\n",
+                       libcfs_nid2str(data->ioc_nid),
+                       libcfs_nid2str(ni->ni_nid));
+                return -EINVAL;
+
+        case IOC_LIBCFS_PUSH_CONNECTION:
+                id.nid = data->ioc_nid;
+                id.pid = LNET_PID_ANY;
                 return ksocknal_push(ni, id);
-        }
+
         default:
                 return -EINVAL;
         }
@@ -2095,7 +2145,7 @@ ksocknal_ctl(lnet_ni_t *ni, unsigned int cmd, void *arg)
 void
 ksocknal_free_buffers (void)
 {
-        LASSERT (atomic_read(&ksocknal_data.ksnd_nactive_txs) == 0);
+        LASSERT (cfs_atomic_read(&ksocknal_data.ksnd_nactive_txs) == 0);
 
         if (ksocknal_data.ksnd_schedulers != NULL)
                 LIBCFS_FREE (ksocknal_data.ksnd_schedulers,
@@ -2105,7 +2155,7 @@ ksocknal_free_buffers (void)
                      sizeof (struct list_head) *
                      ksocknal_data.ksnd_peer_hash_size);
 
-        spin_lock(&ksocknal_data.ksnd_tx_lock);
+        cfs_spin_lock(&ksocknal_data.ksnd_tx_lock);
 
         if (!list_empty(&ksocknal_data.ksnd_idle_noop_txs)) {
                 struct list_head  zlist;
@@ -2113,7 +2163,7 @@ ksocknal_free_buffers (void)
 
                 list_add(&zlist, &ksocknal_data.ksnd_idle_noop_txs);
                 list_del_init(&ksocknal_data.ksnd_idle_noop_txs);
-                spin_unlock(&ksocknal_data.ksnd_tx_lock);
+                cfs_spin_unlock(&ksocknal_data.ksnd_tx_lock);
 
                 while(!list_empty(&zlist)) {
                         tx = list_entry(zlist.next, ksock_tx_t, tx_list);
@@ -2121,7 +2171,7 @@ ksocknal_free_buffers (void)
                         LIBCFS_FREE(tx, tx->tx_desc_size);
                 }
         } else {
-                spin_unlock(&ksocknal_data.ksnd_tx_lock);
+                cfs_spin_unlock(&ksocknal_data.ksnd_tx_lock);
         }
 }
 
@@ -2132,7 +2182,7 @@ ksocknal_base_shutdown (void)
         int            i;
 
         CDEBUG(D_MALLOC, "before NAL cleanup: kmem %d\n",
-               atomic_read (&libcfs_kmemory));
+               cfs_atomic_read (&libcfs_kmemory));
         LASSERT (ksocknal_data.ksnd_nnets == 0);
 
         switch (ksocknal_data.ksnd_init) {
@@ -2173,17 +2223,17 @@ ksocknal_base_shutdown (void)
                         }
 
                 i = 4;
-                read_lock (&ksocknal_data.ksnd_global_lock);
+                cfs_read_lock (&ksocknal_data.ksnd_global_lock);
                 while (ksocknal_data.ksnd_nthreads != 0) {
                         i++;
                         CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, /* power of 2? */
                                "waiting for %d threads to terminate\n",
                                 ksocknal_data.ksnd_nthreads);
-                        read_unlock (&ksocknal_data.ksnd_global_lock);
+                        cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
                         cfs_pause(cfs_time_seconds(1));
-                        read_lock (&ksocknal_data.ksnd_global_lock);
+                        cfs_read_lock (&ksocknal_data.ksnd_global_lock);
                 }
-                read_unlock (&ksocknal_data.ksnd_global_lock);
+                cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
 
                 ksocknal_free_buffers();
 
@@ -2192,12 +2242,11 @@ ksocknal_base_shutdown (void)
         }
 
         CDEBUG(D_MALLOC, "after NAL cleanup: kmem %d\n",
-               atomic_read (&libcfs_kmemory));
+               cfs_atomic_read (&libcfs_kmemory));
 
         PORTAL_MODULE_UNUSE;
 }
 
-
 __u64
 ksocknal_new_incarnation (void)
 {
@@ -2208,7 +2257,7 @@ ksocknal_new_incarnation (void)
          * we won't be able to reboot more frequently than 1MHz for the
          * forseeable future :) */
 
-        do_gettimeofday(&tv);
+        cfs_do_gettimeofday(&tv);
 
         return (((__u64)tv.tv_sec) * 1000000) + tv.tv_usec;
 }
@@ -2233,20 +2282,20 @@ ksocknal_base_startup (void)
         for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++)
                 CFS_INIT_LIST_HEAD(&ksocknal_data.ksnd_peers[i]);
 
-        rwlock_init(&ksocknal_data.ksnd_global_lock);
+        cfs_rwlock_init(&ksocknal_data.ksnd_global_lock);
 
-        spin_lock_init (&ksocknal_data.ksnd_reaper_lock);
+        cfs_spin_lock_init (&ksocknal_data.ksnd_reaper_lock);
         CFS_INIT_LIST_HEAD (&ksocknal_data.ksnd_enomem_conns);
         CFS_INIT_LIST_HEAD (&ksocknal_data.ksnd_zombie_conns);
         CFS_INIT_LIST_HEAD (&ksocknal_data.ksnd_deathrow_conns);
         cfs_waitq_init(&ksocknal_data.ksnd_reaper_waitq);
 
-        spin_lock_init (&ksocknal_data.ksnd_connd_lock);
+        cfs_spin_lock_init (&ksocknal_data.ksnd_connd_lock);
         CFS_INIT_LIST_HEAD (&ksocknal_data.ksnd_connd_connreqs);
         CFS_INIT_LIST_HEAD (&ksocknal_data.ksnd_connd_routes);
         cfs_waitq_init(&ksocknal_data.ksnd_connd_waitq);
 
-        spin_lock_init (&ksocknal_data.ksnd_tx_lock);
+        cfs_spin_lock_init (&ksocknal_data.ksnd_tx_lock);
         CFS_INIT_LIST_HEAD (&ksocknal_data.ksnd_idle_noop_txs);
 
         /* NB memset above zeros whole of ksocknal_data, including
@@ -2265,7 +2314,7 @@ ksocknal_base_startup (void)
         for (i = 0; i < ksocknal_data.ksnd_nschedulers; i++) {
                 ksock_sched_t *kss = &ksocknal_data.ksnd_schedulers[i];
 
-                spin_lock_init (&kss->kss_lock);
+                cfs_spin_lock_init (&kss->kss_lock);
                 CFS_INIT_LIST_HEAD (&kss->kss_rx_conns);
                 CFS_INIT_LIST_HEAD (&kss->kss_tx_conns);
                 CFS_INIT_LIST_HEAD (&kss->kss_zombie_noop_txs);
@@ -2286,9 +2335,10 @@ ksocknal_base_startup (void)
          * connecting */
         if (*ksocknal_tunables.ksnd_nconnds < 2)
                 *ksocknal_tunables.ksnd_nconnds = 2;
-        
+
         for (i = 0; i < *ksocknal_tunables.ksnd_nconnds; i++) {
-                rc = ksocknal_thread_start (ksocknal_connd, (void *)((long)i));
+                rc = ksocknal_thread_start (ksocknal_connd,
+                                            (void *)((ulong_ptr_t)i));
                 if (rc != 0) {
                         CERROR("Can't spawn socknal connd: %d\n", rc);
                         goto failed;
@@ -2318,7 +2368,7 @@ ksocknal_debug_peerhash (lnet_ni_t *ni)
         struct list_head *tmp;
         int               i;
 
-        read_lock (&ksocknal_data.ksnd_global_lock);
+        cfs_read_lock (&ksocknal_data.ksnd_global_lock);
 
         for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) {
                 list_for_each (tmp, &ksocknal_data.ksnd_peers[i]) {
@@ -2337,7 +2387,7 @@ ksocknal_debug_peerhash (lnet_ni_t *ni)
                 CWARN ("Active peer on shutdown: %s, ref %d, scnt %d, "
                        "closing %d, accepting %d, err %d, zcookie "LPU64", "
                        "txq %d, zc_req %d\n", libcfs_id2str(peer->ksnp_id),
-                       atomic_read(&peer->ksnp_refcount),
+                       cfs_atomic_read(&peer->ksnp_refcount),
                        peer->ksnp_sharecount, peer->ksnp_closing,
                        peer->ksnp_accepting, peer->ksnp_error,
                        peer->ksnp_zc_next_cookie,
@@ -2347,7 +2397,7 @@ ksocknal_debug_peerhash (lnet_ni_t *ni)
                 list_for_each (tmp, &peer->ksnp_routes) {
                         route = list_entry(tmp, ksock_route_t, ksnr_list);
                         CWARN ("Route: ref %d, schd %d, conn %d, cnted %d, "
-                               "del %d\n", atomic_read(&route->ksnr_refcount),
+                               "del %d\n", cfs_atomic_read(&route->ksnr_refcount),
                                route->ksnr_scheduled, route->ksnr_connecting,
                                route->ksnr_connected, route->ksnr_deleted);
                 }
@@ -2355,13 +2405,13 @@ ksocknal_debug_peerhash (lnet_ni_t *ni)
                 list_for_each (tmp, &peer->ksnp_conns) {
                         conn = list_entry(tmp, ksock_conn_t, ksnc_list);
                         CWARN ("Conn: ref %d, sref %d, t %d, c %d\n",
-                               atomic_read(&conn->ksnc_conn_refcount),
-                               atomic_read(&conn->ksnc_sock_refcount),
+                               cfs_atomic_read(&conn->ksnc_conn_refcount),
+                               cfs_atomic_read(&conn->ksnc_sock_refcount),
                                conn->ksnc_type, conn->ksnc_closing);
                 }
         }
 
-        read_unlock (&ksocknal_data.ksnd_global_lock);
+        cfs_read_unlock (&ksocknal_data.ksnd_global_lock);
         return;
 }
 
@@ -2370,24 +2420,26 @@ ksocknal_shutdown (lnet_ni_t *ni)
 {
         ksock_net_t      *net = ni->ni_data;
         int               i;
-        lnet_process_id_t  anyid = {.nid = LNET_NID_ANY,
-                                   .pid = LNET_PID_ANY};
+        lnet_process_id_t anyid = {0};
+
+        anyid.nid =  LNET_NID_ANY;
+        anyid.pid =  LNET_PID_ANY;
 
         LASSERT(ksocknal_data.ksnd_init == SOCKNAL_INIT_ALL);
         LASSERT(ksocknal_data.ksnd_nnets > 0);
 
-        spin_lock_bh (&net->ksnn_lock);
+        cfs_spin_lock_bh (&net->ksnn_lock);
         net->ksnn_shutdown = 1;                 /* prevent new peers */
-        spin_unlock_bh (&net->ksnn_lock);
+        cfs_spin_unlock_bh (&net->ksnn_lock);
 
         /* Delete all peers */
         ksocknal_del_peer(ni, anyid, 0);
 
         /* Wait for all peer state to clean up */
         i = 2;
-        spin_lock_bh (&net->ksnn_lock);
+        cfs_spin_lock_bh (&net->ksnn_lock);
         while (net->ksnn_npeers != 0) {
-                spin_unlock_bh (&net->ksnn_lock);
+                cfs_spin_unlock_bh (&net->ksnn_lock);
 
                 i++;
                 CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, /* power of 2? */
@@ -2397,9 +2449,9 @@ ksocknal_shutdown (lnet_ni_t *ni)
 
                 ksocknal_debug_peerhash(ni);
 
-                spin_lock_bh (&net->ksnn_lock);
+                cfs_spin_lock_bh (&net->ksnn_lock);
         }
-        spin_unlock_bh (&net->ksnn_lock);
+        cfs_spin_unlock_bh (&net->ksnn_lock);
 
         for (i = 0; i < net->ksnn_ninterfaces; i++) {
                 LASSERT (net->ksnn_interfaces[i].ksni_npeers == 0);
@@ -2407,7 +2459,7 @@ ksocknal_shutdown (lnet_ni_t *ni)
         }
 
         LIBCFS_FREE(net, sizeof(*net));
-        
+
         ksocknal_data.ksnd_nnets--;
         if (ksocknal_data.ksnd_nnets == 0)
                 ksocknal_base_shutdown();
@@ -2421,7 +2473,7 @@ ksocknal_enumerate_interfaces(ksock_net_t *net)
         int         j;
         int         rc;
         int         n;
-                
+
         n = libcfs_ipif_enumerate(&names);
         if (n <= 0) {
                 CERROR("Can't enumerate interfaces: %d\n", n);
@@ -2442,7 +2494,7 @@ ksocknal_enumerate_interfaces(ksock_net_t *net)
                               names[i], rc);
                         continue;
                 }
-                
+
                 if (!up) {
                         CWARN("Ignoring interface %s (down)\n",
                               names[i]);
@@ -2461,10 +2513,10 @@ ksocknal_enumerate_interfaces(ksock_net_t *net)
         }
 
         libcfs_ipif_free_enumeration(names, n);
-        
+
         if (j == 0)
                 CERROR("Can't find any usable interfaces\n");
-        
+
         return j;
 }
 
@@ -2482,18 +2534,18 @@ ksocknal_startup (lnet_ni_t *ni)
                 if (rc != 0)
                         return rc;
         }
-        
+
         LIBCFS_ALLOC(net, sizeof(*net));
         if (net == NULL)
                 goto fail_0;
-                
+
         memset(net, 0, sizeof(*net));
-        spin_lock_init(&net->ksnn_lock);
+        cfs_spin_lock_init(&net->ksnn_lock);
         net->ksnn_incarnation = ksocknal_new_incarnation();
         ni->ni_data = net;
         ni->ni_maxtxcredits = *ksocknal_tunables.ksnd_credits;
         ni->ni_peertxcredits = *ksocknal_tunables.ksnd_peercredits;
-        
+
         if (ni->ni_interfaces[0] == NULL) {
                 rc = ksocknal_enumerate_interfaces(net);
                 if (rc <= 0)
@@ -2511,13 +2563,13 @@ ksocknal_startup (lnet_ni_t *ni)
                                 ni->ni_interfaces[i], &up,
                                 &net->ksnn_interfaces[i].ksni_ipaddr,
                                 &net->ksnn_interfaces[i].ksni_netmask);
-                        
+
                         if (rc != 0) {
                                 CERROR("Can't get interface %s info: %d\n",
                                        ni->ni_interfaces[i], rc);
                                 goto fail_1;
                         }
-                        
+
                         if (!up) {
                                 CERROR("Interface %s is down\n",
                                        ni->ni_interfaces[i]);
@@ -2533,7 +2585,7 @@ ksocknal_startup (lnet_ni_t *ni)
         ksocknal_data.ksnd_nnets++;
 
         return 0;
-        
+
  fail_1:
         LIBCFS_FREE(net, sizeof(*net));
  fail_0:
@@ -2548,7 +2600,7 @@ void __exit
 ksocknal_module_fini (void)
 {
         lnet_unregister_lnd(&the_ksocklnd);
-        ksocknal_lib_tunables_fini();
+        ksocknal_tunables_fini();
 }
 
 int __init
@@ -2557,9 +2609,20 @@ ksocknal_module_init (void)
         int    rc;
 
         /* check ksnr_connected/connecting field large enough */
-        CLASSERT(SOCKLND_CONN_NTYPES <= 4);
-        
-        rc = ksocknal_lib_tunables_init();
+        CLASSERT (SOCKLND_CONN_NTYPES <= 4);
+        CLASSERT (SOCKLND_CONN_ACK == SOCKLND_CONN_BULK_IN);
+
+        /* initialize the_ksocklnd */
+        the_ksocklnd.lnd_type     = SOCKLND;
+        the_ksocklnd.lnd_startup  = ksocknal_startup;
+        the_ksocklnd.lnd_shutdown = ksocknal_shutdown;
+        the_ksocklnd.lnd_ctl      = ksocknal_ctl;
+        the_ksocklnd.lnd_send     = ksocknal_send;
+        the_ksocklnd.lnd_recv     = ksocknal_recv;
+        the_ksocklnd.lnd_notify   = ksocknal_notify;
+        the_ksocklnd.lnd_accept   = ksocknal_accept;
+
+        rc = ksocknal_tunables_init();
         if (rc != 0)
                 return rc;
 
@@ -2568,8 +2631,8 @@ ksocknal_module_init (void)
         return 0;
 }
 
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
-MODULE_DESCRIPTION("Kernel TCP Socket LND v2.0.0");
+MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
+MODULE_DESCRIPTION("Kernel TCP Socket LND v3.0.0");
 MODULE_LICENSE("GPL");
 
-cfs_module(ksocknal, "2.0.0", ksocknal_module_init, ksocknal_module_fini);
+cfs_module(ksocknal, "3.0.0", ksocknal_module_init, ksocknal_module_fini);