#include "socknal.h"
+nal_t ksocknal_api;
+ksock_nal_data_t ksocknal_data;
ptl_handle_ni_t ksocknal_ni;
-static nal_t ksocknal_api;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
-ksock_nal_data_t ksocknal_data;
-#else
-static ksock_nal_data_t ksocknal_data;
-#endif
+ksock_tunables_t ksocknal_tunables;
kpr_nal_interface_t ksocknal_router_interface = {
kprni_nalid: SOCKNAL,
kprni_arg: &ksocknal_data,
kprni_fwd: ksocknal_fwd_packet,
+ kprni_notify: ksocknal_notify,
+};
+
+#ifdef CONFIG_SYSCTL
+#define SOCKNAL_SYSCTL 200
+
+#define SOCKNAL_SYSCTL_TIMEOUT 1
+#define SOCKNAL_SYSCTL_EAGER_ACK 2
+#define SOCKNAL_SYSCTL_ZERO_COPY 3
+#define SOCKNAL_SYSCTL_TYPED 4
+#define SOCKNAL_SYSCTL_MIN_BULK 5
+
+static ctl_table ksocknal_ctl_table[] = {
+ {SOCKNAL_SYSCTL_TIMEOUT, "timeout",
+ &ksocknal_tunables.ksnd_io_timeout, sizeof (int),
+ 0644, NULL, &proc_dointvec},
+ {SOCKNAL_SYSCTL_EAGER_ACK, "eager_ack",
+ &ksocknal_tunables.ksnd_eager_ack, sizeof (int),
+ 0644, NULL, &proc_dointvec},
+#if SOCKNAL_ZC
+ {SOCKNAL_SYSCTL_ZERO_COPY, "zero_copy",
+ &ksocknal_tunables.ksnd_zc_min_frag, sizeof (int),
+ 0644, NULL, &proc_dointvec},
+#endif
+ {SOCKNAL_SYSCTL_TYPED, "typed",
+ &ksocknal_tunables.ksnd_typed_conns, sizeof (int),
+ 0644, NULL, &proc_dointvec},
+ {SOCKNAL_SYSCTL_MIN_BULK, "min_bulk",
+ &ksocknal_tunables.ksnd_min_bulk, sizeof (int),
+ 0644, NULL, &proc_dointvec},
+ { 0 }
};
+static ctl_table ksocknal_top_ctl_table[] = {
+ {SOCKNAL_SYSCTL, "socknal", NULL, 0, 0555, ksocknal_ctl_table},
+ { 0 }
+};
+#endif
int
ksocknal_api_forward(nal_t *nal, int id, void *args, size_t args_len,
return PTL_OK;
}
-int
-ksocknal_api_shutdown(nal_t *nal, int ni)
-{
- CDEBUG (D_NET, "closing all connections\n");
-
- ksocknal_del_route (PTL_NID_ANY, 0, 0, 0);
- ksocknal_close_conn (PTL_NID_ANY, 0);
- return PTL_OK;
-}
-
-void
-ksocknal_api_yield(nal_t *nal)
-{
- our_cond_resched();
- return;
-}
-
void
ksocknal_api_lock(nal_t *nal, unsigned long *flags)
{
nal_cb->cb_sti(nal_cb,flags);
}
-nal_t *
-ksocknal_init(int interface, ptl_pt_index_t ptl_size,
- ptl_ac_index_t ac_size, ptl_pid_t requested_pid)
+int
+ksocknal_api_yield(nal_t *nal, unsigned long *flags, int milliseconds)
{
- CDEBUG(D_NET, "calling lib_init with nid "LPX64"\n", (ptl_nid_t)0);
- lib_init(&ksocknal_lib, (ptl_nid_t)0, 0, 10, ptl_size, ac_size);
- return (&ksocknal_api);
+ /* NB called holding statelock */
+ wait_queue_t wait;
+ unsigned long now = jiffies;
+
+ CDEBUG (D_NET, "yield\n");
+
+ if (milliseconds == 0) {
+ our_cond_resched();
+ return 0;
+ }
+
+ init_waitqueue_entry(&wait, current);
+ set_current_state (TASK_INTERRUPTIBLE);
+ add_wait_queue (&ksocknal_data.ksnd_yield_waitq, &wait);
+
+ ksocknal_api_unlock(nal, flags);
+
+ if (milliseconds < 0)
+ schedule ();
+ else
+ schedule_timeout((milliseconds * HZ) / 1000);
+
+ ksocknal_api_lock(nal, flags);
+
+ remove_wait_queue (&ksocknal_data.ksnd_yield_waitq, &wait);
+
+ if (milliseconds > 0) {
+ milliseconds -= ((jiffies - now) * 1000) / HZ;
+ if (milliseconds < 0)
+ milliseconds = 0;
+ }
+
+ return (milliseconds);
}
-/*
- * EXTRA functions follow
- */
-
int
ksocknal_set_mynid(ptl_nid_t nid)
{
snprintf (cmdline, sizeof (cmdline),
"echo %d > /proc/irq/%u/smp_affinity", 1 << info->ksni_sched, irq);
- printk (KERN_INFO "Binding irq %u to CPU %d with cmd: %s\n",
+ printk (KERN_INFO "Lustre: Binding irq %u to CPU %d with cmd: %s\n",
irq, info->ksni_sched, cmdline);
/* FIXME: Find a better method of setting IRQ affinity...
*/
- call_usermodehelper (argv[0], argv, envp);
+ USERMODEHELPER(argv[0], argv, envp);
#endif
}
ksock_route_t *
ksocknal_create_route (__u32 ipaddr, int port, int buffer_size,
- int irq_affinity, int xchange_nids, int nonagel)
+ int irq_affinity, int eager)
{
ksock_route_t *route;
atomic_set (&route->ksnr_refcount, 1);
route->ksnr_sharecount = 0;
route->ksnr_peer = NULL;
- route->ksnr_timeout = jiffies_64;
+ route->ksnr_timeout = jiffies;
route->ksnr_retry_interval = SOCKNAL_MIN_RECONNECT_INTERVAL;
route->ksnr_ipaddr = ipaddr;
route->ksnr_port = port;
route->ksnr_buffer_size = buffer_size;
route->ksnr_irq_affinity = irq_affinity;
- route->ksnr_xchange_nids = xchange_nids;
- route->ksnr_nonagel = nonagel;
+ route->ksnr_eager = eager;
route->ksnr_connecting = 0;
+ route->ksnr_connected = 0;
route->ksnr_deleted = 0;
- route->ksnr_generation = 0;
- route->ksnr_conn = NULL;
+ route->ksnr_conn_count = 0;
return (route);
}
ksocknal_destroy_route (ksock_route_t *route)
{
LASSERT (route->ksnr_sharecount == 0);
- LASSERT (route->ksnr_conn == NULL);
if (route->ksnr_peer != NULL)
ksocknal_put_peer (route->ksnr_peer);
void
ksocknal_put_route (ksock_route_t *route)
{
- CDEBUG (D_OTHER, "putting route[%p] -> "LPX64" (%d)\n",
- route, route->ksnr_peer->ksnp_nid,
- atomic_read (&route->ksnr_refcount));
+ CDEBUG (D_OTHER, "putting route[%p] (%d)\n",
+ route, atomic_read (&route->ksnr_refcount));
LASSERT (atomic_read (&route->ksnr_refcount) > 0);
if (!atomic_dec_and_test (&route->ksnr_refcount))
INIT_LIST_HEAD (&peer->ksnp_routes);
INIT_LIST_HEAD (&peer->ksnp_tx_queue);
- /* Can't unload while peers exist; ensures all I/O has terminated
- * before unload attempts */
- PORTAL_MODULE_USE;
atomic_inc (&ksocknal_data.ksnd_npeers);
return (peer);
}
* that _all_ state to do with this peer has been cleaned up when
* its refcount drops to zero. */
atomic_dec (&ksocknal_data.ksnd_npeers);
- PORTAL_MODULE_UNUSE;
}
void
int
ksocknal_add_route (ptl_nid_t nid, __u32 ipaddr, int port, int bufnob,
- int nonagle, int xchange_nids, int bind_irq, int share)
+ int bind_irq, int share, int eager)
{
unsigned long flags;
ksock_peer_t *peer;
if (peer == NULL)
return (-ENOMEM);
- route = ksocknal_create_route (ipaddr, port, bufnob,
- nonagle, xchange_nids, bind_irq);
+ route = ksocknal_create_route (ipaddr, port, bufnob,
+ bind_irq, eager);
if (route == NULL) {
ksocknal_put_peer (peer);
return (-ENOMEM);
route->ksnr_peer = peer;
atomic_inc (&peer->ksnp_refcount);
/* peer's route list takes existing ref on route */
- list_add (&route->ksnr_list, &peer->ksnp_routes);
+ list_add_tail (&route->ksnr_list, &peer->ksnp_routes);
}
route->ksnr_sharecount++;
void
ksocknal_del_route_locked (ksock_route_t *route, int share, int keep_conn)
{
- ksock_peer_t *peer = route->ksnr_peer;
- ksock_conn_t *conn = route->ksnr_conn;
+ ksock_peer_t *peer = route->ksnr_peer;
+ ksock_conn_t *conn;
+ struct list_head *ctmp;
+ struct list_head *cnxt;
if (!share)
route->ksnr_sharecount = 0;
return;
}
- if (conn != NULL) {
- if (!keep_conn)
- ksocknal_close_conn_locked (conn);
- else {
- /* keeping the conn; just dissociate it and route... */
- conn->ksnc_route = NULL;
- route->ksnr_conn = NULL;
- ksocknal_put_route (route); /* drop conn's ref on route */
- ksocknal_put_conn (conn); /* drop route's ref on conn */
+ list_for_each_safe (ctmp, cnxt, &peer->ksnp_conns) {
+ conn = list_entry(ctmp, ksock_conn_t, ksnc_list);
+
+ if (conn->ksnc_route != route)
+ continue;
+
+ if (!keep_conn) {
+ ksocknal_close_conn_locked (conn, 0);
+ continue;
}
+
+ /* keeping the conn; just dissociate it and route... */
+ conn->ksnc_route = NULL;
+ ksocknal_put_route (route); /* drop conn's ref on route */
}
-
+
route->ksnr_deleted = 1;
list_del (&route->ksnr_list);
ksocknal_put_route (route); /* drop peer's ref */
struct sockaddr_in sin;
int len = sizeof (sin);
int rc;
-
- rc = ksocknal_getconnsock (conn);
- LASSERT (rc == 0);
rc = conn->ksnc_sock->ops->getname (conn->ksnc_sock,
(struct sockaddr *)&sin, &len, 2);
+ /* Didn't need the {get,put}connsock dance to deref ksnc_sock... */
+ LASSERT (!conn->ksnc_closing);
LASSERT (len <= sizeof (sin));
- ksocknal_putconnsock (conn);
if (rc != 0) {
CERROR ("Error %d getting sock peer IP\n", rc);
ksocknal_conn_irq (ksock_conn_t *conn)
{
int irq = 0;
- int rc;
struct dst_entry *dst;
- rc = ksocknal_getconnsock (conn);
- LASSERT (rc == 0);
-
dst = sk_dst_get (conn->ksnc_sock->sk);
if (dst != NULL) {
if (dst->dev != NULL) {
dst_release (dst);
}
- ksocknal_putconnsock (conn);
+ /* Didn't need the {get,put}connsock dance to deref ksnc_sock... */
+ LASSERT (!conn->ksnc_closing);
return (irq);
}
}
int
-ksocknal_create_conn (ptl_nid_t nid, ksock_route_t *route,
- struct socket *sock, int bind_irq)
+ksocknal_create_conn (ksock_route_t *route, struct socket *sock,
+ int bind_irq, int type)
{
+ ptl_nid_t nid;
+ __u64 incarnation;
unsigned long flags;
ksock_conn_t *conn;
ksock_peer_t *peer;
int rc;
/* NB, sock has an associated file since (a) this connection might
- * have been created in userland and (b) we need the refcounting so
- * that we don't close the socket while I/O is being done on it. */
+ * have been created in userland and (b) we need to refcount the
+ * socket so that we don't close it while I/O is being done on
+ * it, and sock->file has that pre-cooked... */
LASSERT (sock->file != NULL);
+ LASSERT (file_count(sock->file) > 0);
- rc = ksocknal_set_linger (sock);
+ rc = ksocknal_setup_sock (sock);
if (rc != 0)
return (rc);
+ if (route == NULL) {
+ /* acceptor or explicit connect */
+ nid = PTL_NID_ANY;
+ } else {
+ LASSERT (type != SOCKNAL_CONN_NONE);
+ /* autoconnect: expect this nid on exchange */
+ nid = route->ksnr_peer->ksnp_nid;
+ }
+
+ rc = ksocknal_hello (sock, &nid, &type, &incarnation);
+ if (rc != 0)
+ return (rc);
+
peer = NULL;
if (route == NULL) { /* not autoconnect */
/* Assume this socket connects to a brand new peer */
conn->ksnc_peer = NULL;
conn->ksnc_route = NULL;
conn->ksnc_sock = sock;
+ conn->ksnc_type = type;
+ conn->ksnc_incarnation = incarnation;
conn->ksnc_saved_data_ready = sock->sk->sk_data_ready;
conn->ksnc_saved_write_space = sock->sk->sk_write_space;
atomic_set (&conn->ksnc_refcount, 1); /* 1 ref for me */
ksocknal_new_packet (conn, 0);
INIT_LIST_HEAD (&conn->ksnc_tx_queue);
-#if SOCKNAL_ZC
- INIT_LIST_HEAD (&conn->ksnc_tx_pending);
-#endif
conn->ksnc_tx_ready = 0;
conn->ksnc_tx_scheduled = 0;
atomic_set (&conn->ksnc_tx_nob, 0);
ksocknal_get_peer_addr (conn);
+ CWARN("New conn nid:"LPX64" ip:%08x/%d incarnation:"LPX64"\n",
+ nid, conn->ksnc_ipaddr, conn->ksnc_port, incarnation);
+
irq = ksocknal_conn_irq (conn);
write_lock_irqsave (&ksocknal_data.ksnd_global_lock, flags);
if (route != NULL) {
/* Autoconnected! */
- LASSERT (route->ksnr_conn == NULL && route->ksnr_connecting);
+ LASSERT ((route->ksnr_connected & (1 << type)) == 0);
+ LASSERT ((route->ksnr_connecting & (1 << type)) != 0);
if (route->ksnr_deleted) {
/* This conn was autoconnected, but the autoconnect
}
- /* associate conn/route for auto-reconnect */
- route->ksnr_conn = conn;
- atomic_inc (&conn->ksnc_refcount);
+ /* associate conn/route */
conn->ksnc_route = route;
atomic_inc (&route->ksnr_refcount);
- route->ksnr_connecting = 0;
- route->ksnr_generation++;
+ route->ksnr_connecting &= ~(1 << type);
+ route->ksnr_connected |= (1 << type);
+ route->ksnr_conn_count++;
route->ksnr_retry_interval = SOCKNAL_MIN_RECONNECT_INTERVAL;
peer = route->ksnr_peer;
conn->ksnc_peer = peer;
atomic_inc (&peer->ksnp_refcount);
+ peer->ksnp_last_alive = jiffies;
+ peer->ksnp_error = 0;
+
+ /* Set the deadline for the outgoing HELLO to drain */
+ conn->ksnc_tx_deadline = jiffies +
+ ksocknal_tunables.ksnd_io_timeout * HZ;
list_add (&conn->ksnc_list, &peer->ksnp_conns);
atomic_inc (&conn->ksnc_refcount);
ksocknal_queue_tx_locked (tx, conn);
}
+ rc = ksocknal_close_stale_conns_locked (peer, incarnation);
+
write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock, flags);
+ if (rc != 0)
+ CERROR ("Closed %d stale conns to nid "LPX64" ip %d.%d.%d.%d\n",
+ rc, conn->ksnc_peer->ksnp_nid,
+ HIPQUAD(conn->ksnc_ipaddr));
+
if (bind_irq) /* irq binding required */
ksocknal_bind_irq (irq);
ksocknal_data_ready (sock->sk, 0);
ksocknal_write_space (sock->sk);
- CDEBUG(D_IOCTL, "conn [%p] registered for nid "LPX64"\n",
- conn, conn->ksnc_peer->ksnp_nid);
+ CDEBUG(D_IOCTL, "conn [%p] registered for nid "LPX64" ip %d.%d.%d.%d\n",
+ conn, conn->ksnc_peer->ksnp_nid, HIPQUAD(conn->ksnc_ipaddr));
ksocknal_put_conn (conn);
return (0);
}
void
-ksocknal_close_conn_locked (ksock_conn_t *conn)
+ksocknal_close_conn_locked (ksock_conn_t *conn, int error)
{
/* This just does the immmediate housekeeping, and queues the
- * connection for the reaper to terminate.
+ * connection for the reaper to terminate.
* Caller holds ksnd_global_lock exclusively in irq context */
ksock_peer_t *peer = conn->ksnc_peer;
ksock_route_t *route;
+ LASSERT (peer->ksnp_error == 0);
LASSERT (!conn->ksnc_closing);
conn->ksnc_closing = 1;
atomic_inc (&ksocknal_data.ksnd_nclosing_conns);
route = conn->ksnc_route;
if (route != NULL) {
/* dissociate conn from route... */
- LASSERT (!route->ksnr_connecting &&
- !route->ksnr_deleted);
+ LASSERT (!route->ksnr_deleted);
+ LASSERT ((route->ksnr_connecting & (1 << conn->ksnc_type)) == 0);
+ LASSERT ((route->ksnr_connected & (1 << conn->ksnc_type)) != 0);
- route->ksnr_conn = NULL;
+ route->ksnr_connected &= ~(1 << conn->ksnc_type);
conn->ksnc_route = NULL;
+ list_del (&route->ksnr_list); /* make route least favourite */
+ list_add_tail (&route->ksnr_list, &peer->ksnp_routes);
+
ksocknal_put_route (route); /* drop conn's ref on route */
- ksocknal_put_conn (conn); /* drop route's ref on conn */
}
/* ksnd_deathrow_conns takes over peer's ref */
list_del (&conn->ksnc_list);
- if (list_empty (&peer->ksnp_conns) &&
- list_empty (&peer->ksnp_routes)) {
- /* I've just closed last conn belonging to a
- * non-autoconnecting peer */
- ksocknal_unlink_peer_locked (peer);
+ if (list_empty (&peer->ksnp_conns)) {
+ /* No more connections to this peer */
+
+ peer->ksnp_error = error; /* stash last conn close reason */
+
+ if (list_empty (&peer->ksnp_routes)) {
+ /* I've just closed last conn belonging to a
+ * non-autoconnecting peer */
+ ksocknal_unlink_peer_locked (peer);
+ }
}
spin_lock (&ksocknal_data.ksnd_reaper_lock);
list_add_tail (&conn->ksnc_list, &ksocknal_data.ksnd_deathrow_conns);
- if (waitqueue_active (&ksocknal_data.ksnd_reaper_waitq))
- wake_up (&ksocknal_data.ksnd_reaper_waitq);
+ wake_up (&ksocknal_data.ksnd_reaper_waitq);
spin_unlock (&ksocknal_data.ksnd_reaper_lock);
}
-int
-ksocknal_close_conn_unlocked (ksock_conn_t *conn)
-{
- unsigned long flags;
- int did_it = 0;
-
- write_lock_irqsave (&ksocknal_data.ksnd_global_lock, flags);
-
- if (!conn->ksnc_closing) {
- did_it = 1;
- ksocknal_close_conn_locked (conn);
- }
-
- write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock, flags);
-
- return (did_it);
-}
-
void
ksocknal_terminate_conn (ksock_conn_t *conn)
{
* ksnc_refcount will eventually hit zero, and then the reaper will
* destroy it. */
unsigned long flags;
+ ksock_peer_t *peer = conn->ksnc_peer;
+ ksock_sched_t *sched = conn->ksnc_scheduler;
+ struct timeval now;
+ time_t then = 0;
+ int notify = 0;
+
+ LASSERT(conn->ksnc_closing);
+
+ /* wake up the scheduler to "send" all remaining packets to /dev/null */
+ spin_lock_irqsave(&sched->kss_lock, flags);
+
+ 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 */
+ atomic_inc (&conn->ksnc_refcount);
+
+ wake_up (&sched->kss_waitq);
+ }
+
+ spin_unlock_irqrestore (&sched->kss_lock, flags);
/* serialise with callbacks */
write_lock_irqsave (&ksocknal_data.ksnd_global_lock, flags);
- LASSERT (conn->ksnc_closing);
-
/* Remove conn's network callbacks.
* NB I _have_ to restore the callback, rather than storing a noop,
* since the socket could survive past this module being unloaded!! */
* sk_user_data is NULL. */
conn->ksnc_sock->sk->sk_user_data = NULL;
+ /* OK, so this conn may not be completely disengaged from its
+ * scheduler yet, but it _has_ committed to terminate... */
conn->ksnc_scheduler->kss_nconns--;
+ if (peer->ksnp_error != 0) {
+ /* peer's last conn closed in error */
+ LASSERT (list_empty (&peer->ksnp_conns));
+
+ /* convert peer's last-known-alive timestamp from jiffies */
+ do_gettimeofday (&now);
+ then = now.tv_sec - (jiffies - peer->ksnp_last_alive)/HZ;
+ notify = 1;
+ }
+
write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock, flags);
/* The socket is closed on the final put; either here, or in
* immediately, aborting anything buffered in it. Any hung
* zero-copy transmits will therefore complete in finite time. */
ksocknal_putconnsock (conn);
+
+ if (notify)
+ kpr_notify (&ksocknal_data.ksnd_router, peer->ksnp_nid,
+ 0, then);
}
void
LASSERT (conn->ksnc_route == NULL);
LASSERT (!conn->ksnc_tx_scheduled);
LASSERT (!conn->ksnc_rx_scheduled);
-#if SOCKNAL_ZC
- LASSERT (list_empty (&conn->ksnc_tx_pending));
-#endif
- /* complete queued packets */
- while (!list_empty (&conn->ksnc_tx_queue)) {
- ksock_tx_t *tx = list_entry (conn->ksnc_tx_queue.next,
- ksock_tx_t, tx_list);
-
- CERROR ("Deleting packet type %d len %d ("LPX64"->"LPX64")\n",
- NTOH__u32 (tx->tx_hdr->type),
- NTOH__u32 (PTL_HDR_LENGTH(tx->tx_hdr)),
- NTOH__u64 (tx->tx_hdr->src_nid),
- NTOH__u64 (tx->tx_hdr->dest_nid));
-
- list_del (&tx->tx_list);
- ksocknal_tx_done (tx, 0);
- }
+ LASSERT (list_empty(&conn->ksnc_tx_queue));
/* complete current receive if any */
switch (conn->ksnc_rx_state) {
case SOCKNAL_RX_BODY:
- lib_finalize (&ksocknal_lib, NULL, conn->ksnc_cookie);
+ CERROR("Completing partial receive from "LPX64
+ ", ip %d.%d.%d.%d:%d, with error\n",
+ conn->ksnc_peer->ksnp_nid,
+ HIPQUAD(conn->ksnc_ipaddr), conn->ksnc_port);
+ lib_finalize (&ksocknal_lib, NULL, conn->ksnc_cookie, PTL_FAIL);
break;
case SOCKNAL_RX_BODY_FWD:
ksocknal_fmb_callback (conn->ksnc_cookie, -ECONNABORTED);
spin_lock_irqsave (&ksocknal_data.ksnd_reaper_lock, flags);
list_add (&conn->ksnc_list, &ksocknal_data.ksnd_zombie_conns);
- if (waitqueue_active (&ksocknal_data.ksnd_reaper_waitq))
- wake_up (&ksocknal_data.ksnd_reaper_waitq);
+ wake_up (&ksocknal_data.ksnd_reaper_waitq);
spin_unlock_irqrestore (&ksocknal_data.ksnd_reaper_lock, flags);
}
int
-ksocknal_close_conn (ptl_nid_t nid, __u32 ipaddr)
+ksocknal_close_peer_conns_locked (ksock_peer_t *peer, __u32 ipaddr, int why)
{
- unsigned long flags;
ksock_conn_t *conn;
struct list_head *ctmp;
struct list_head *cnxt;
+ int count = 0;
+
+ list_for_each_safe (ctmp, cnxt, &peer->ksnp_conns) {
+ conn = list_entry (ctmp, ksock_conn_t, ksnc_list);
+
+ if (ipaddr == 0 ||
+ conn->ksnc_ipaddr == ipaddr) {
+ count++;
+ ksocknal_close_conn_locked (conn, why);
+ }
+ }
+
+ return (count);
+}
+
+int
+ksocknal_close_stale_conns_locked (ksock_peer_t *peer, __u64 incarnation)
+{
+ ksock_conn_t *conn;
+ struct list_head *ctmp;
+ struct list_head *cnxt;
+ int count = 0;
+
+ list_for_each_safe (ctmp, cnxt, &peer->ksnp_conns) {
+ conn = list_entry (ctmp, ksock_conn_t, ksnc_list);
+
+ if (conn->ksnc_incarnation == incarnation)
+ continue;
+
+ CWARN("Closing stale conn nid:"LPX64" ip:%08x/%d "
+ "incarnation:"LPX64"("LPX64")\n",
+ peer->ksnp_nid, conn->ksnc_ipaddr, conn->ksnc_port,
+ conn->ksnc_incarnation, incarnation);
+
+ count++;
+ ksocknal_close_conn_locked (conn, -ESTALE);
+ }
+
+ return (count);
+}
+
+int
+ksocknal_close_conn_and_siblings (ksock_conn_t *conn, int why)
+{
+ ksock_peer_t *peer = conn->ksnc_peer;
+ __u32 ipaddr = conn->ksnc_ipaddr;
+ unsigned long flags;
+ int count;
+
+ write_lock_irqsave (&ksocknal_data.ksnd_global_lock, flags);
+
+ count = ksocknal_close_peer_conns_locked (peer, ipaddr, why);
+
+ write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock, flags);
+
+ return (count);
+}
+
+int
+ksocknal_close_matching_conns (ptl_nid_t nid, __u32 ipaddr)
+{
+ unsigned long flags;
ksock_peer_t *peer;
struct list_head *ptmp;
struct list_head *pnxt;
int lo;
int hi;
int i;
- int rc = -ENOENT;
+ int count = 0;
write_lock_irqsave (&ksocknal_data.ksnd_global_lock, flags);
if (!(nid == PTL_NID_ANY || nid == peer->ksnp_nid))
continue;
- list_for_each_safe (ctmp, cnxt, &peer->ksnp_conns) {
-
- conn = list_entry (ctmp, ksock_conn_t,
- ksnc_list);
-
- if (!(ipaddr == 0 ||
- conn->ksnc_ipaddr == ipaddr))
- continue;
-
- rc = 0;
- ksocknal_close_conn_locked (conn);
- }
+ count += ksocknal_close_peer_conns_locked (peer, ipaddr, 0);
}
}
write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock, flags);
- return (rc);
+ /* wildcards always succeed */
+ if (nid == PTL_NID_ANY || ipaddr == 0)
+ return (0);
+
+ return (count == 0 ? -ENOENT : 0);
+}
+
+void
+ksocknal_notify (void *arg, ptl_nid_t gw_nid, int alive)
+{
+ /* The router is telling me she's been notified of a change in
+ * gateway state.... */
+
+ CDEBUG (D_NET, "gw "LPX64" %s\n", gw_nid, alive ? "up" : "down");
+
+ if (!alive) {
+ /* If the gateway crashed, close all open connections... */
+ ksocknal_close_matching_conns (gw_nid, 0);
+ return;
+ }
+
+ /* ...otherwise do nothing. We can only establish new connections
+ * if we have autroutes, and these connect on demand. */
}
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
}
int
-ksocknal_cmd(struct portal_ioctl_data * data, void * private)
+ksocknal_cmd(struct portals_cfg *pcfg, void * private)
{
int rc = -EINVAL;
- LASSERT (data != NULL);
+ LASSERT (pcfg != NULL);
- switch(data->ioc_nal_cmd) {
+ switch(pcfg->pcfg_command) {
case NAL_CMD_GET_AUTOCONN: {
- ksock_route_t *route = ksocknal_get_route_by_idx (data->ioc_count);
+ ksock_route_t *route = ksocknal_get_route_by_idx (pcfg->pcfg_count);
if (route == NULL)
rc = -ENOENT;
else {
rc = 0;
- data->ioc_nid = route->ksnr_peer->ksnp_nid;
- data->ioc_id = route->ksnr_ipaddr;
- data->ioc_misc = route->ksnr_port;
- data->ioc_count = route->ksnr_generation;
- data->ioc_size = route->ksnr_buffer_size;
- data->ioc_wait = route->ksnr_sharecount;
- data->ioc_flags = (route->ksnr_nonagel ? 1 : 0) |
- (route->ksnr_xchange_nids ? 2 : 0) |
- (route->ksnr_irq_affinity ? 4 : 0);
+ pcfg->pcfg_nid = route->ksnr_peer->ksnp_nid;
+ pcfg->pcfg_id = route->ksnr_ipaddr;
+ pcfg->pcfg_misc = route->ksnr_port;
+ pcfg->pcfg_count = route->ksnr_conn_count;
+ pcfg->pcfg_size = route->ksnr_buffer_size;
+ pcfg->pcfg_wait = route->ksnr_sharecount;
+ pcfg->pcfg_flags = (route->ksnr_irq_affinity ? 2 : 0) |
+ (route->ksnr_eager ? 4 : 0);
ksocknal_put_route (route);
}
break;
}
case NAL_CMD_ADD_AUTOCONN: {
- rc = ksocknal_add_route (data->ioc_nid, data->ioc_id,
- data->ioc_misc, data->ioc_size,
- (data->ioc_flags & 1) != 0,
- (data->ioc_flags & 2) != 0,
- (data->ioc_flags & 4) != 0,
- (data->ioc_flags & 8) != 0);
+ rc = ksocknal_add_route (pcfg->pcfg_nid, pcfg->pcfg_id,
+ pcfg->pcfg_misc, pcfg->pcfg_size,
+ (pcfg->pcfg_flags & 0x02) != 0,
+ (pcfg->pcfg_flags & 0x04) != 0,
+ (pcfg->pcfg_flags & 0x08) != 0);
break;
}
case NAL_CMD_DEL_AUTOCONN: {
- rc = ksocknal_del_route (data->ioc_nid, data->ioc_id,
- (data->ioc_flags & 1) != 0,
- (data->ioc_flags & 2) != 0);
+ rc = ksocknal_del_route (pcfg->pcfg_nid, pcfg->pcfg_id,
+ (pcfg->pcfg_flags & 1) != 0,
+ (pcfg->pcfg_flags & 2) != 0);
break;
}
case NAL_CMD_GET_CONN: {
- ksock_conn_t *conn = ksocknal_get_conn_by_idx (data->ioc_count);
+ ksock_conn_t *conn = ksocknal_get_conn_by_idx (pcfg->pcfg_count);
if (conn == NULL)
rc = -ENOENT;
else {
rc = 0;
- data->ioc_nid = conn->ksnc_peer->ksnp_nid;
- data->ioc_id = conn->ksnc_ipaddr;
- data->ioc_misc = conn->ksnc_port;
+ pcfg->pcfg_nid = conn->ksnc_peer->ksnp_nid;
+ pcfg->pcfg_id = conn->ksnc_ipaddr;
+ pcfg->pcfg_misc = conn->ksnc_port;
+ pcfg->pcfg_flags = conn->ksnc_type;
ksocknal_put_conn (conn);
}
break;
}
case NAL_CMD_REGISTER_PEER_FD: {
- struct socket *sock = sockfd_lookup (data->ioc_fd, &rc);
+ struct socket *sock = sockfd_lookup (pcfg->pcfg_fd, &rc);
+ int type = pcfg->pcfg_misc;
- if (sock != NULL) {
- rc = ksocknal_create_conn (data->ioc_nid, NULL,
- sock, data->ioc_flags);
- if (rc != 0)
- fput (sock->file);
+ if (sock == NULL)
+ break;
+
+ switch (type) {
+ case SOCKNAL_CONN_NONE:
+ case SOCKNAL_CONN_ANY:
+ case SOCKNAL_CONN_CONTROL:
+ case SOCKNAL_CONN_BULK_IN:
+ case SOCKNAL_CONN_BULK_OUT:
+ rc = ksocknal_create_conn(NULL, sock, pcfg->pcfg_flags, type);
+ default:
+ break;
}
+ if (rc != 0)
+ fput (sock->file);
break;
}
case NAL_CMD_CLOSE_CONNECTION: {
- rc = ksocknal_close_conn (data->ioc_nid, data->ioc_id);
+ rc = ksocknal_close_matching_conns (pcfg->pcfg_nid,
+ pcfg->pcfg_id);
break;
}
case NAL_CMD_REGISTER_MYNID: {
- rc = ksocknal_set_mynid (data->ioc_nid);
+ rc = ksocknal_set_mynid (pcfg->pcfg_nid);
break;
}
case NAL_CMD_PUSH_CONNECTION: {
- rc = ksocknal_push (data->ioc_nid);
+ rc = ksocknal_push (pcfg->pcfg_nid);
break;
}
}
}
void
-ksocknal_free_buffers (void)
+ksocknal_free_fmbs (ksock_fmb_pool_t *p)
{
- if (ksocknal_data.ksnd_fmbs != NULL) {
- ksock_fmb_t *fmb = (ksock_fmb_t *)ksocknal_data.ksnd_fmbs;
- int i;
- int j;
-
- for (i = 0;
- i < (SOCKNAL_SMALL_FWD_NMSGS + SOCKNAL_LARGE_FWD_NMSGS);
- i++, fmb++)
- for (j = 0; j < fmb->fmb_npages; j++)
- if (fmb->fmb_pages[j] != NULL)
- __free_page (fmb->fmb_pages[j]);
-
- PORTAL_FREE (ksocknal_data.ksnd_fmbs,
- sizeof (ksock_fmb_t) * (SOCKNAL_SMALL_FWD_NMSGS +
- SOCKNAL_LARGE_FWD_NMSGS));
+ int npages = p->fmp_buff_pages;
+ ksock_fmb_t *fmb;
+ int i;
+
+ LASSERT (list_empty(&p->fmp_blocked_conns));
+ LASSERT (p->fmp_nactive_fmbs == 0);
+
+ while (!list_empty(&p->fmp_idle_fmbs)) {
+
+ fmb = list_entry(p->fmp_idle_fmbs.next,
+ ksock_fmb_t, fmb_list);
+
+ for (i = 0; i < npages; i++)
+ if (fmb->fmb_kiov[i].kiov_page != NULL)
+ __free_page(fmb->fmb_kiov[i].kiov_page);
+
+ list_del(&fmb->fmb_list);
+ PORTAL_FREE(fmb, offsetof(ksock_fmb_t, fmb_kiov[npages]));
}
+}
+
+void
+ksocknal_free_buffers (void)
+{
+ ksocknal_free_fmbs(&ksocknal_data.ksnd_small_fmp);
+ ksocknal_free_fmbs(&ksocknal_data.ksnd_large_fmp);
- LASSERT (ksocknal_data.ksnd_active_ltxs == 0);
- if (ksocknal_data.ksnd_ltxs != NULL)
- PORTAL_FREE (ksocknal_data.ksnd_ltxs,
- sizeof (ksock_ltx_t) * (SOCKNAL_NLTXS +
- SOCKNAL_NNBLK_LTXS));
+ LASSERT (atomic_read(&ksocknal_data.ksnd_nactive_ltxs) == 0);
if (ksocknal_data.ksnd_schedulers != NULL)
PORTAL_FREE (ksocknal_data.ksnd_schedulers,
ksocknal_data.ksnd_peer_hash_size);
}
-void /*__exit*/
-ksocknal_module_fini (void)
+void
+ksocknal_api_shutdown (nal_t *nal)
{
int i;
+ 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 == &ksocknal_api);
+
switch (ksocknal_data.ksnd_init) {
default:
LASSERT (0);
case SOCKNAL_INIT_ALL:
- kportal_nal_unregister(SOCKNAL);
- PORTAL_SYMBOL_UNREGISTER (ksocknal_ni);
+ libcfs_nal_cmd_unregister(SOCKNAL);
+
+ ksocknal_data.ksnd_init = SOCKNAL_INIT_LIB;
/* fall through */
- case SOCKNAL_INIT_PTL:
- PtlNIFini(ksocknal_ni);
+ case SOCKNAL_INIT_LIB:
+ /* No more calls to ksocknal_cmd() to create new
+ * autoroutes/connections since we're being unloaded. */
+
+ /* Delete all autoroute entries */
+ ksocknal_del_route(PTL_NID_ANY, 0, 0, 0);
+
+ /* Delete all connections */
+ ksocknal_close_matching_conns (PTL_NID_ANY, 0);
+
+ /* Wait for all peer state to clean up */
+ i = 2;
+ while (atomic_read (&ksocknal_data.ksnd_npeers) != 0) {
+ i++;
+ CDEBUG(((i & (-i)) == i) ? D_WARNING : D_NET, /* power of 2? */
+ "waiting for %d peers to disconnect\n",
+ atomic_read (&ksocknal_data.ksnd_npeers));
+ set_current_state (TASK_UNINTERRUPTIBLE);
+ schedule_timeout (HZ);
+ }
+
+ /* Tell lib we've stopped calling into her. */
lib_fini(&ksocknal_lib);
+
+ ksocknal_data.ksnd_init = SOCKNAL_INIT_DATA;
/* fall through */
case SOCKNAL_INIT_DATA:
for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) {
LASSERT (list_empty (&ksocknal_data.ksnd_peers[i]));
}
+ LASSERT (list_empty (&ksocknal_data.ksnd_enomem_conns));
LASSERT (list_empty (&ksocknal_data.ksnd_zombie_conns));
LASSERT (list_empty (&ksocknal_data.ksnd_autoconnectd_routes));
LASSERT (list_empty (&ksocknal_data.ksnd_small_fmp.fmp_blocked_conns));
kpr_deregister (&ksocknal_data.ksnd_router);
ksocknal_free_buffers();
+
+ ksocknal_data.ksnd_init = SOCKNAL_INIT_NOTHING;
/* fall through */
case SOCKNAL_INIT_NOTHING:
CDEBUG(D_MALLOC, "after NAL cleanup: kmem %d\n",
atomic_read (&portal_kmemory));
- printk(KERN_INFO "Routing socket NAL unloaded (final mem %d)\n",
+ printk(KERN_INFO "Lustre: Routing socket NAL unloaded (final mem %d)\n",
atomic_read(&portal_kmemory));
}
-int __init
-ksocknal_module_init (void)
+void
+ksocknal_init_incarnation (void)
{
- int pkmem = atomic_read(&portal_kmemory);
- int rc;
- int i;
- int j;
+ struct timeval tv;
- /* packet descriptor must fit in a router descriptor's scratchpad */
- LASSERT(sizeof (ksock_tx_t) <= sizeof (kprfd_scratch_t));
+ /* The incarnation number is the time this module loaded and it
+ * identifies this particular instance of the socknal. Hopefully
+ * we won't be able to reboot more frequently than 1MHz for the
+ * forseeable future :) */
+
+ do_gettimeofday(&tv);
+
+ ksocknal_data.ksnd_incarnation =
+ (((__u64)tv.tv_sec) * 1000000) + tv.tv_usec;
+}
- LASSERT (ksocknal_data.ksnd_init == SOCKNAL_INIT_NOTHING);
+int
+ksocknal_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;
+ int j;
- ksocknal_api.forward = ksocknal_api_forward;
- ksocknal_api.shutdown = ksocknal_api_shutdown;
- ksocknal_api.yield = ksocknal_api_yield;
- ksocknal_api.validate = NULL; /* our api validate is a NOOP */
- ksocknal_api.lock = ksocknal_api_lock;
- ksocknal_api.unlock = ksocknal_api_unlock;
- ksocknal_api.nal_data = &ksocknal_data;
+ LASSERT (nal == &ksocknal_api);
- ksocknal_lib.nal_data = &ksocknal_data;
+ if (nal->nal_refct != 0) {
+ if (actual_limits != NULL)
+ *actual_limits = ksocknal_lib.ni.actual_limits;
+ /* This module got the first ref */
+ PORTAL_MODULE_USE;
+ return (PTL_OK);
+ }
+
+ LASSERT (ksocknal_data.ksnd_init == SOCKNAL_INIT_NOTHING);
memset (&ksocknal_data, 0, sizeof (ksocknal_data)); /* zero pointers */
+ ksocknal_init_incarnation();
+
ksocknal_data.ksnd_peer_hash_size = SOCKNAL_PEER_HASH_SIZE;
PORTAL_ALLOC (ksocknal_data.ksnd_peers,
sizeof (struct list_head) * ksocknal_data.ksnd_peer_hash_size);
if (ksocknal_data.ksnd_peers == NULL)
- RETURN (-ENOMEM);
+ return (-ENOMEM);
for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++)
INIT_LIST_HEAD(&ksocknal_data.ksnd_peers[i]);
ksocknal_data.ksnd_nal_cb = &ksocknal_lib;
spin_lock_init (&ksocknal_data.ksnd_nal_cb_lock);
-
+ init_waitqueue_head(&ksocknal_data.ksnd_yield_waitq);
+
spin_lock_init(&ksocknal_data.ksnd_small_fmp.fmp_lock);
INIT_LIST_HEAD(&ksocknal_data.ksnd_small_fmp.fmp_idle_fmbs);
INIT_LIST_HEAD(&ksocknal_data.ksnd_small_fmp.fmp_blocked_conns);
+ ksocknal_data.ksnd_small_fmp.fmp_buff_pages = SOCKNAL_SMALL_FWD_PAGES;
spin_lock_init(&ksocknal_data.ksnd_large_fmp.fmp_lock);
INIT_LIST_HEAD(&ksocknal_data.ksnd_large_fmp.fmp_idle_fmbs);
INIT_LIST_HEAD(&ksocknal_data.ksnd_large_fmp.fmp_blocked_conns);
-
- spin_lock_init(&ksocknal_data.ksnd_idle_ltx_lock);
- INIT_LIST_HEAD(&ksocknal_data.ksnd_idle_nblk_ltx_list);
- INIT_LIST_HEAD(&ksocknal_data.ksnd_idle_ltx_list);
- init_waitqueue_head(&ksocknal_data.ksnd_idle_ltx_waitq);
+ ksocknal_data.ksnd_large_fmp.fmp_buff_pages = SOCKNAL_LARGE_FWD_PAGES;
spin_lock_init (&ksocknal_data.ksnd_reaper_lock);
+ INIT_LIST_HEAD (&ksocknal_data.ksnd_enomem_conns);
INIT_LIST_HEAD (&ksocknal_data.ksnd_zombie_conns);
INIT_LIST_HEAD (&ksocknal_data.ksnd_deathrow_conns);
init_waitqueue_head(&ksocknal_data.ksnd_reaper_waitq);
PORTAL_ALLOC(ksocknal_data.ksnd_schedulers,
sizeof(ksock_sched_t) * SOCKNAL_N_SCHED);
if (ksocknal_data.ksnd_schedulers == NULL) {
- ksocknal_module_fini ();
- RETURN(-ENOMEM);
+ ksocknal_api_shutdown (&ksocknal_api);
+ return (-ENOMEM);
}
for (i = 0; i < SOCKNAL_N_SCHED; i++) {
init_waitqueue_head (&kss->kss_waitq);
}
- CDEBUG (D_MALLOC, "ltx "LPSZ", total "LPSZ"\n", sizeof (ksock_ltx_t),
- sizeof (ksock_ltx_t) * (SOCKNAL_NLTXS + SOCKNAL_NNBLK_LTXS));
-
- PORTAL_ALLOC(ksocknal_data.ksnd_ltxs,
- sizeof(ksock_ltx_t) * (SOCKNAL_NLTXS +SOCKNAL_NNBLK_LTXS));
- if (ksocknal_data.ksnd_ltxs == NULL) {
- ksocknal_module_fini ();
- return (-ENOMEM);
- }
-
- /* Deterministic bugs please */
- memset (ksocknal_data.ksnd_ltxs, 0xeb,
- sizeof (ksock_ltx_t) * (SOCKNAL_NLTXS + SOCKNAL_NNBLK_LTXS));
-
- for (i = 0; i < SOCKNAL_NLTXS + SOCKNAL_NNBLK_LTXS; i++) {
- ksock_ltx_t *ltx = &((ksock_ltx_t *)ksocknal_data.ksnd_ltxs)[i];
-
- ltx->ltx_tx.tx_hdr = <x->ltx_hdr;
- ltx->ltx_idle = i < SOCKNAL_NLTXS ?
- &ksocknal_data.ksnd_idle_ltx_list :
- &ksocknal_data.ksnd_idle_nblk_ltx_list;
- list_add (<x->ltx_tx.tx_list, ltx->ltx_idle);
- }
-
- rc = PtlNIInit(ksocknal_init, 32, 4, 0, &ksocknal_ni);
- if (rc != 0) {
- CERROR("ksocknal: PtlNIInit failed: error %d\n", rc);
- ksocknal_module_fini ();
- RETURN (rc);
+ /* NB we have to wait to be told our true NID... */
+ process_id.pid = 0;
+ process_id.nid = 0;
+
+ rc = lib_init(&ksocknal_lib, process_id,
+ requested_limits, actual_limits);
+ if (rc != PTL_OK) {
+ CERROR("lib_init failed: error %d\n", rc);
+ ksocknal_api_shutdown (&ksocknal_api);
+ return (rc);
}
- PtlNIDebug(ksocknal_ni, ~0);
- ksocknal_data.ksnd_init = SOCKNAL_INIT_PTL; // flag PtlNIInit() called
+ ksocknal_data.ksnd_init = SOCKNAL_INIT_LIB; // flag lib_init() called
for (i = 0; i < SOCKNAL_N_SCHED; i++) {
rc = ksocknal_thread_start (ksocknal_scheduler,
if (rc != 0) {
CERROR("Can't spawn socknal scheduler[%d]: %d\n",
i, rc);
- ksocknal_module_fini ();
- RETURN (rc);
+ ksocknal_api_shutdown (&ksocknal_api);
+ return (rc);
}
}
rc = ksocknal_thread_start (ksocknal_autoconnectd, (void *)((long)i));
if (rc != 0) {
CERROR("Can't spawn socknal autoconnectd: %d\n", rc);
- ksocknal_module_fini ();
- RETURN (rc);
+ ksocknal_api_shutdown (&ksocknal_api);
+ return (rc);
}
}
rc = ksocknal_thread_start (ksocknal_reaper, NULL);
if (rc != 0) {
CERROR ("Can't spawn socknal reaper: %d\n", rc);
- ksocknal_module_fini ();
- RETURN (rc);
+ ksocknal_api_shutdown (&ksocknal_api);
+ return (rc);
}
rc = kpr_register(&ksocknal_data.ksnd_router,
CDEBUG(D_NET, "Can't initialise routing interface "
"(rc = %d): not routing\n", rc);
} else {
- /* Only allocate forwarding buffers if I'm on a gateway */
-
- PORTAL_ALLOC(ksocknal_data.ksnd_fmbs,
- sizeof(ksock_fmb_t) * (SOCKNAL_SMALL_FWD_NMSGS +
- SOCKNAL_LARGE_FWD_NMSGS));
- if (ksocknal_data.ksnd_fmbs == NULL) {
- ksocknal_module_fini ();
- RETURN(-ENOMEM);
- }
-
- /* NULL out buffer pointers etc */
- memset(ksocknal_data.ksnd_fmbs, 0,
- sizeof(ksock_fmb_t) * (SOCKNAL_SMALL_FWD_NMSGS +
- SOCKNAL_LARGE_FWD_NMSGS));
+ /* Only allocate forwarding buffers if there's a router */
for (i = 0; i < (SOCKNAL_SMALL_FWD_NMSGS +
SOCKNAL_LARGE_FWD_NMSGS); i++) {
- ksock_fmb_t *fmb =
- &((ksock_fmb_t *)ksocknal_data.ksnd_fmbs)[i];
-
- if (i < SOCKNAL_SMALL_FWD_NMSGS) {
- fmb->fmb_npages = SOCKNAL_SMALL_FWD_PAGES;
- fmb->fmb_pool = &ksocknal_data.ksnd_small_fmp;
- } else {
- fmb->fmb_npages = SOCKNAL_LARGE_FWD_PAGES;
- fmb->fmb_pool = &ksocknal_data.ksnd_large_fmp;
+ ksock_fmb_t *fmb;
+ ksock_fmb_pool_t *pool;
+
+
+ if (i < SOCKNAL_SMALL_FWD_NMSGS)
+ pool = &ksocknal_data.ksnd_small_fmp;
+ else
+ pool = &ksocknal_data.ksnd_large_fmp;
+
+ PORTAL_ALLOC(fmb, offsetof(ksock_fmb_t,
+ fmb_kiov[pool->fmp_buff_pages]));
+ if (fmb == NULL) {
+ ksocknal_api_shutdown(&ksocknal_api);
+ return (-ENOMEM);
}
- LASSERT (fmb->fmb_npages > 0);
- for (j = 0; j < fmb->fmb_npages; j++) {
- fmb->fmb_pages[j] = alloc_page(GFP_KERNEL);
+ fmb->fmb_pool = pool;
+
+ for (j = 0; j < pool->fmp_buff_pages; j++) {
+ fmb->fmb_kiov[j].kiov_page = alloc_page(GFP_KERNEL);
- if (fmb->fmb_pages[j] == NULL) {
- ksocknal_module_fini ();
+ if (fmb->fmb_kiov[j].kiov_page == NULL) {
+ ksocknal_api_shutdown (&ksocknal_api);
return (-ENOMEM);
}
- LASSERT(page_address (fmb->fmb_pages[j]) !=
- NULL);
+ LASSERT(page_address(fmb->fmb_kiov[j].kiov_page) != NULL);
}
- list_add(&fmb->fmb_list, &fmb->fmb_pool->fmp_idle_fmbs);
+ list_add(&fmb->fmb_list, &pool->fmp_idle_fmbs);
}
}
- rc = kportal_nal_register(SOCKNAL, &ksocknal_cmd, NULL);
+ rc = libcfs_nal_cmd_register(SOCKNAL, &ksocknal_cmd, NULL);
if (rc != 0) {
CERROR ("Can't initialise command interface (rc = %d)\n", rc);
- ksocknal_module_fini ();
+ ksocknal_api_shutdown (&ksocknal_api);
return (rc);
}
- PORTAL_SYMBOL_REGISTER(ksocknal_ni);
-
/* flag everything initialised */
ksocknal_data.ksnd_init = SOCKNAL_INIT_ALL;
- printk(KERN_INFO "Routing socket NAL loaded (Routing %s, initial "
- "mem %d)\n",
+ printk(KERN_INFO "Lustre: Routing socket NAL loaded "
+ "(Routing %s, initial mem %d, incarnation "LPX64")\n",
kpr_routing (&ksocknal_data.ksnd_router) ?
- "enabled" : "disabled", pkmem);
+ "enabled" : "disabled", pkmem, ksocknal_data.ksnd_incarnation);
+
+ return (0);
+}
+void __exit
+ksocknal_module_fini (void)
+{
+#ifdef CONFIG_SYSCTL
+ if (ksocknal_tunables.ksnd_sysctl != NULL)
+ unregister_sysctl_table (ksocknal_tunables.ksnd_sysctl);
+#endif
+ PtlNIFini(ksocknal_ni);
+
+ ptl_unregister_nal(SOCKNAL);
+}
+
+int __init
+ksocknal_module_init (void)
+{
+ int rc;
+
+ /* packet descriptor must fit in a router descriptor's scratchpad */
+ LASSERT(sizeof (ksock_tx_t) <= sizeof (kprfd_scratch_t));
+ /* the following must be sizeof(int) for proc_dointvec() */
+ LASSERT(sizeof (ksocknal_tunables.ksnd_io_timeout) == sizeof (int));
+ LASSERT(sizeof (ksocknal_tunables.ksnd_eager_ack) == sizeof (int));
+ LASSERT(sizeof (ksocknal_tunables.ksnd_typed_conns) == sizeof (int));
+ LASSERT(sizeof (ksocknal_tunables.ksnd_min_bulk) == sizeof (int));
+#if SOCKNAL_ZC
+ LASSERT(sizeof (ksocknal_tunables.ksnd_zc_min_frag) == sizeof (int));
+#endif
+ /* check ksnr_connected/connecting field large enough */
+ LASSERT(SOCKNAL_CONN_NTYPES <= 4);
+
+ ksocknal_api.startup = ksocknal_api_startup;
+ ksocknal_api.forward = ksocknal_api_forward;
+ ksocknal_api.shutdown = ksocknal_api_shutdown;
+ ksocknal_api.lock = ksocknal_api_lock;
+ ksocknal_api.unlock = ksocknal_api_unlock;
+ ksocknal_api.nal_data = &ksocknal_data;
+
+ ksocknal_lib.nal_data = &ksocknal_data;
+
+ /* Initialise dynamic tunables to defaults once only */
+ ksocknal_tunables.ksnd_io_timeout = SOCKNAL_IO_TIMEOUT;
+ ksocknal_tunables.ksnd_eager_ack = SOCKNAL_EAGER_ACK;
+ ksocknal_tunables.ksnd_typed_conns = SOCKNAL_TYPED_CONNS;
+ ksocknal_tunables.ksnd_min_bulk = SOCKNAL_MIN_BULK;
+#if SOCKNAL_ZC
+ ksocknal_tunables.ksnd_zc_min_frag = SOCKNAL_ZC_MIN_FRAG;
+#endif
+
+ rc = ptl_register_nal(SOCKNAL, &ksocknal_api);
+ if (rc != PTL_OK) {
+ CERROR("Can't register SOCKNAL: %d\n", rc);
+ return (-ENOMEM); /* or something... */
+ }
+
+ /* Pure gateways want the NAL started up at module load time... */
+ rc = PtlNIInit(SOCKNAL, 0, NULL, NULL, &ksocknal_ni);
+ if (rc != PTL_OK && rc != PTL_IFACE_DUP) {
+ ptl_unregister_nal(SOCKNAL);
+ return (-ENODEV);
+ }
+
+#ifdef CONFIG_SYSCTL
+ /* Press on regardless even if registering sysctl doesn't work */
+ ksocknal_tunables.ksnd_sysctl =
+ register_sysctl_table (ksocknal_top_ctl_table, 0);
+#endif
return (0);
}
module_init(ksocknal_module_init);
module_exit(ksocknal_module_fini);
-EXPORT_SYMBOL (ksocknal_ni);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff