#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_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_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
+#define SOCKNAL_SYSCTL_BUFFER_SIZE 6
+#define SOCKNAL_SYSCTL_NAGLE 7
+#define SOCKNAL_SYSCTL_IRQ_AFFINITY 8
+#define SOCKNAL_SYSCTL_KEEPALIVE_IDLE 9
+#define SOCKNAL_SYSCTL_KEEPALIVE_COUNT 10
+#define SOCKNAL_SYSCTL_KEEPALIVE_INTVL 11
static ctl_table ksocknal_ctl_table[] = {
{SOCKNAL_SYSCTL_TIMEOUT, "timeout",
- &ksocknal_data.ksnd_io_timeout, sizeof (int),
+ &ksocknal_tunables.ksnd_io_timeout, sizeof (int),
0644, NULL, &proc_dointvec},
{SOCKNAL_SYSCTL_EAGER_ACK, "eager_ack",
- &ksocknal_data.ksnd_eager_ack, sizeof (int),
+ &ksocknal_tunables.ksnd_eager_ack, sizeof (int),
0644, NULL, &proc_dointvec},
#if SOCKNAL_ZC
- {SOCKNAL_SYSCTL_EAGER_ACK, "zero_copy",
- &ksocknal_data.ksnd_zc_min_frag, sizeof (int),
+ {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},
+ {SOCKNAL_SYSCTL_BUFFER_SIZE, "buffer_size",
+ &ksocknal_tunables.ksnd_buffer_size, sizeof(int),
+ 0644, NULL, &proc_dointvec},
+ {SOCKNAL_SYSCTL_NAGLE, "nagle",
+ &ksocknal_tunables.ksnd_nagle, sizeof(int),
+ 0644, NULL, &proc_dointvec},
+#if CPU_AFFINITY
+ {SOCKNAL_SYSCTL_IRQ_AFFINITY, "irq_affinity",
+ &ksocknal_tunables.ksnd_irq_affinity, sizeof(int),
0644, NULL, &proc_dointvec},
#endif
+ {SOCKNAL_SYSCTL_KEEPALIVE_IDLE, "keepalive_idle",
+ &ksocknal_tunables.ksnd_keepalive_idle, sizeof(int),
+ 0644, NULL, &proc_dointvec},
+ {SOCKNAL_SYSCTL_KEEPALIVE_COUNT, "keepalive_count",
+ &ksocknal_tunables.ksnd_keepalive_count, sizeof(int),
+ 0644, NULL, &proc_dointvec},
+ {SOCKNAL_SYSCTL_KEEPALIVE_INTVL, "keepalive_intvl",
+ &ksocknal_tunables.ksnd_keepalive_intvl, sizeof(int),
+ 0644, NULL, &proc_dointvec},
{ 0 }
};
{SOCKNAL_SYSCTL, "socknal", NULL, 0, 0555, ksocknal_ctl_table},
{ 0 }
};
-
-int
-ksocknal_api_forward(nal_t *nal, int id, void *args, size_t args_len,
- void *ret, size_t ret_len)
-{
- ksock_nal_data_t *k;
- nal_cb_t *nal_cb;
-
- k = nal->nal_data;
- nal_cb = k->ksnd_nal_cb;
-
- lib_dispatch(nal_cb, k, id, args, ret); /* ksocknal_send needs k */
- 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)
-{
- ksock_nal_data_t *k;
- nal_cb_t *nal_cb;
-
- k = nal->nal_data;
- nal_cb = k->ksnd_nal_cb;
- nal_cb->cb_cli(nal_cb,flags);
-}
-
-void
-ksocknal_api_unlock(nal_t *nal, unsigned long *flags)
-{
- ksock_nal_data_t *k;
- nal_cb_t *nal_cb;
-
- k = nal->nal_data;
- nal_cb = k->ksnd_nal_cb;
- 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)
-{
- 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);
-}
-
-/*
- * EXTRA functions follow
- */
+#endif
int
ksocknal_set_mynid(ptl_nid_t nid)
{
- lib_ni_t *ni = &ksocknal_lib.ni;
+ lib_ni_t *ni = &ksocknal_lib.libnal_ni;
/* FIXME: we have to do this because we call lib_init() at module
* insertion time, which is before we have 'mynid' available. lib_init
* problem. */
CDEBUG(D_IOCTL, "setting mynid to "LPX64" (old nid="LPX64")\n",
- nid, ni->nid);
+ nid, ni->ni_pid.nid);
- ni->nid = nid;
+ ni->ni_pid.nid = nid;
return (0);
}
{
#if (defined(CONFIG_SMP) && CPU_AFFINITY)
int bind;
+ int cpu;
unsigned long flags;
char cmdline[64];
ksock_irqinfo_t *info;
NULL};
LASSERT (irq < NR_IRQS);
- if (irq == 0) /* software NIC */
+ if (irq == 0) /* software NIC or affinity disabled */
return;
info = &ksocknal_data.ksnd_irqinfo[irq];
if (!bind) /* bound already */
return;
+ cpu = ksocknal_irqsched2cpu(info->ksni_sched);
snprintf (cmdline, sizeof (cmdline),
- "echo %d > /proc/irq/%u/smp_affinity", 1 << info->ksni_sched, irq);
+ "echo %d > /proc/irq/%u/smp_affinity", 1 << cpu, irq);
- printk (KERN_INFO "Binding irq %u to CPU %d with cmd: %s\n",
- irq, info->ksni_sched, cmdline);
+ printk (KERN_INFO "Lustre: Binding irq %u to CPU %d with cmd: %s\n",
+ irq, cpu, cmdline);
/* FIXME: Find a better method of setting IRQ affinity...
*/
- call_usermodehelper (argv[0], argv, envp);
+ USERMODEHELPER(argv[0], argv, envp);
#endif
}
+ksock_interface_t *
+ksocknal_ip2iface(__u32 ip)
+{
+ int i;
+ ksock_interface_t *iface;
+
+ for (i = 0; i < ksocknal_data.ksnd_ninterfaces; i++) {
+ LASSERT(i < SOCKNAL_MAX_INTERFACES);
+ iface = &ksocknal_data.ksnd_interfaces[i];
+
+ if (iface->ksni_ipaddr == ip)
+ return (iface);
+ }
+
+ return (NULL);
+}
+
ksock_route_t *
-ksocknal_create_route (__u32 ipaddr, int port, int buffer_size,
- int nonagel, int xchange_nids, int irq_affinity, int eager)
+ksocknal_create_route (__u32 ipaddr, int port)
{
ksock_route_t *route;
return (NULL);
atomic_set (&route->ksnr_refcount, 1);
- route->ksnr_sharecount = 0;
route->ksnr_peer = NULL;
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;
+ route->ksnr_share_count = 0;
return (route);
}
void
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))
if (peer == NULL)
return (NULL);
- memset (peer, 0, sizeof (*peer));
+ memset (peer, 0, sizeof (*peer)); /* NULL pointers/clear flags etc */
peer->ksnp_nid = nid;
atomic_set (&peer->ksnp_refcount, 1); /* 1 ref for caller */
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
peer = list_entry (tmp, ksock_peer_t, ksnp_list);
LASSERT (!peer->ksnp_closing);
- LASSERT (!(list_empty (&peer->ksnp_routes) &&
- list_empty (&peer->ksnp_conns)));
if (peer->ksnp_nid != nid)
continue;
void
ksocknal_unlink_peer_locked (ksock_peer_t *peer)
{
+ int i;
+ __u32 ip;
+
+ for (i = 0; i < peer->ksnp_n_passive_ips; i++) {
+ LASSERT (i < SOCKNAL_MAX_INTERFACES);
+ ip = peer->ksnp_passive_ips[i];
+
+ ksocknal_ip2iface(ip)->ksni_npeers--;
+ }
+
+ LASSERT (list_empty(&peer->ksnp_conns));
+ LASSERT (list_empty(&peer->ksnp_routes));
LASSERT (!peer->ksnp_closing);
peer->ksnp_closing = 1;
list_del (&peer->ksnp_list);
ksocknal_put_peer (peer);
}
-ksock_route_t *
-ksocknal_get_route_by_idx (int index)
+int
+ksocknal_get_peer_info (int index, ptl_nid_t *nid,
+ __u32 *myip, __u32 *peer_ip, int *port,
+ int *conn_count, int *share_count)
{
ksock_peer_t *peer;
struct list_head *ptmp;
ksock_route_t *route;
struct list_head *rtmp;
int i;
+ int j;
+ int rc = -ENOENT;
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]) {
peer = list_entry (ptmp, ksock_peer_t, ksnp_list);
- LASSERT (!(list_empty (&peer->ksnp_routes) &&
- list_empty (&peer->ksnp_conns)));
+ if (peer->ksnp_n_passive_ips == 0 &&
+ list_empty(&peer->ksnp_routes)) {
+ if (index-- > 0)
+ continue;
+
+ *nid = peer->ksnp_nid;
+ *myip = 0;
+ *peer_ip = 0;
+ *port = 0;
+ *conn_count = 0;
+ *share_count = 0;
+ rc = 0;
+ goto out;
+ }
+ for (j = 0; j < peer->ksnp_n_passive_ips; j++) {
+ if (index-- > 0)
+ continue;
+
+ *nid = peer->ksnp_nid;
+ *myip = peer->ksnp_passive_ips[j];
+ *peer_ip = 0;
+ *port = 0;
+ *conn_count = 0;
+ *share_count = 0;
+ rc = 0;
+ goto out;
+ }
+
list_for_each (rtmp, &peer->ksnp_routes) {
if (index-- > 0)
continue;
- route = list_entry (rtmp, ksock_route_t, ksnr_list);
- atomic_inc (&route->ksnr_refcount);
- read_unlock (&ksocknal_data.ksnd_global_lock);
- return (route);
+ route = list_entry(rtmp, ksock_route_t,
+ ksnr_list);
+
+ *nid = peer->ksnp_nid;
+ *myip = route->ksnr_myipaddr;
+ *peer_ip = route->ksnr_ipaddr;
+ *port = route->ksnr_port;
+ *conn_count = route->ksnr_conn_count;
+ *share_count = route->ksnr_share_count;
+ rc = 0;
+ goto out;
}
}
}
-
+ out:
read_unlock (&ksocknal_data.ksnd_global_lock);
- return (NULL);
+ return (rc);
+}
+
+void
+ksocknal_associate_route_conn_locked(ksock_route_t *route, ksock_conn_t *conn)
+{
+ ksock_peer_t *peer = route->ksnr_peer;
+ int type = conn->ksnc_type;
+ ksock_interface_t *iface;
+
+ conn->ksnc_route = route;
+ atomic_inc (&route->ksnr_refcount);
+
+ if (route->ksnr_myipaddr != conn->ksnc_myipaddr) {
+ if (route->ksnr_myipaddr == 0) {
+ /* route wasn't bound locally yet (the initial route) */
+ CWARN("Binding "LPX64" %u.%u.%u.%u to %u.%u.%u.%u\n",
+ peer->ksnp_nid,
+ HIPQUAD(route->ksnr_ipaddr),
+ HIPQUAD(conn->ksnc_myipaddr));
+ } else {
+ CWARN("Rebinding "LPX64" %u.%u.%u.%u from "
+ "%u.%u.%u.%u to %u.%u.%u.%u\n",
+ peer->ksnp_nid,
+ HIPQUAD(route->ksnr_ipaddr),
+ HIPQUAD(route->ksnr_myipaddr),
+ HIPQUAD(conn->ksnc_myipaddr));
+
+ iface = ksocknal_ip2iface(route->ksnr_myipaddr);
+ if (iface != NULL)
+ iface->ksni_nroutes--;
+ }
+ route->ksnr_myipaddr = conn->ksnc_myipaddr;
+ iface = ksocknal_ip2iface(route->ksnr_myipaddr);
+ if (iface != NULL)
+ iface->ksni_nroutes++;
+ }
+
+ route->ksnr_connected |= (1<<type);
+ route->ksnr_connecting &= ~(1<<type);
+ route->ksnr_conn_count++;
+
+ /* Successful connection => further attempts can
+ * proceed immediately */
+ route->ksnr_timeout = jiffies;
+ route->ksnr_retry_interval = SOCKNAL_MIN_RECONNECT_INTERVAL;
+}
+
+void
+ksocknal_add_route_locked (ksock_peer_t *peer, ksock_route_t *route)
+{
+ struct list_head *tmp;
+ ksock_conn_t *conn;
+ int type;
+ ksock_route_t *route2;
+
+ LASSERT (route->ksnr_peer == NULL);
+ LASSERT (route->ksnr_connecting == 0);
+ LASSERT (route->ksnr_connected == 0);
+
+ /* LASSERT(unique) */
+ list_for_each(tmp, &peer->ksnp_routes) {
+ route2 = list_entry(tmp, ksock_route_t, ksnr_list);
+
+ if (route2->ksnr_ipaddr == route->ksnr_ipaddr) {
+ CERROR ("Duplicate route "LPX64" %u.%u.%u.%u\n",
+ peer->ksnp_nid, HIPQUAD(route->ksnr_ipaddr));
+ LBUG();
+ }
+ }
+
+ route->ksnr_peer = peer;
+ atomic_inc (&peer->ksnp_refcount);
+ /* peer's routelist takes over my ref on 'route' */
+ list_add_tail(&route->ksnr_list, &peer->ksnp_routes);
+
+ list_for_each(tmp, &peer->ksnp_conns) {
+ conn = list_entry(tmp, ksock_conn_t, ksnc_list);
+ type = conn->ksnc_type;
+
+ if (conn->ksnc_ipaddr != route->ksnr_ipaddr)
+ continue;
+
+ ksocknal_associate_route_conn_locked(route, conn);
+ /* keep going (typed routes) */
+ }
+}
+
+void
+ksocknal_del_route_locked (ksock_route_t *route)
+{
+ ksock_peer_t *peer = route->ksnr_peer;
+ ksock_interface_t *iface;
+ ksock_conn_t *conn;
+ struct list_head *ctmp;
+ struct list_head *cnxt;
+
+ LASSERT (!route->ksnr_deleted);
+
+ /* Close associated conns */
+ list_for_each_safe (ctmp, cnxt, &peer->ksnp_conns) {
+ conn = list_entry(ctmp, ksock_conn_t, ksnc_list);
+
+ if (conn->ksnc_route != route)
+ continue;
+
+ ksocknal_close_conn_locked (conn, 0);
+ }
+
+ if (route->ksnr_myipaddr != 0) {
+ iface = ksocknal_ip2iface(route->ksnr_myipaddr);
+ if (iface != NULL)
+ iface->ksni_nroutes--;
+ }
+
+ route->ksnr_deleted = 1;
+ list_del (&route->ksnr_list);
+ ksocknal_put_route (route); /* drop peer's ref */
+
+ if (list_empty (&peer->ksnp_routes) &&
+ list_empty (&peer->ksnp_conns)) {
+ /* I've just removed the last autoconnect route of a peer
+ * with no active connections */
+ ksocknal_unlink_peer_locked (peer);
+ }
}
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 eager)
+ksocknal_add_peer (ptl_nid_t nid, __u32 ipaddr, int port)
{
unsigned long flags;
+ struct list_head *tmp;
ksock_peer_t *peer;
ksock_peer_t *peer2;
ksock_route_t *route;
- struct list_head *rtmp;
ksock_route_t *route2;
if (nid == PTL_NID_ANY)
if (peer == NULL)
return (-ENOMEM);
- route = ksocknal_create_route (ipaddr, port, bufnob, nonagle,
- xchange_nids, bind_irq, eager);
+ route = ksocknal_create_route (ipaddr, port);
if (route == NULL) {
ksocknal_put_peer (peer);
return (-ENOMEM);
ksocknal_put_peer (peer);
peer = peer2;
} else {
- /* peer table takes existing ref on peer */
- list_add (&peer->ksnp_list,
- ksocknal_nid2peerlist (nid));
+ /* peer table takes my ref on peer */
+ list_add_tail (&peer->ksnp_list,
+ ksocknal_nid2peerlist (nid));
}
route2 = NULL;
- if (share) {
- /* check for existing route to this NID via this ipaddr */
- list_for_each (rtmp, &peer->ksnp_routes) {
- route2 = list_entry (rtmp, ksock_route_t, ksnr_list);
-
- if (route2->ksnr_ipaddr == ipaddr)
- break;
-
- route2 = NULL;
- }
+ list_for_each (tmp, &peer->ksnp_routes) {
+ route2 = list_entry(tmp, ksock_route_t, ksnr_list);
+
+ if (route2->ksnr_ipaddr == ipaddr)
+ break;
+
+ route2 = NULL;
}
-
- if (route2 != NULL) {
- ksocknal_put_route (route);
- route = route2;
+ if (route2 == NULL) {
+ ksocknal_add_route_locked(peer, route);
+ route->ksnr_share_count++;
} else {
- /* route takes a ref on peer */
- 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);
+ ksocknal_put_route(route);
+ route2->ksnr_share_count++;
}
-
- route->ksnr_sharecount++;
write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock, flags);
}
void
-ksocknal_del_route_locked (ksock_route_t *route, int share, int keep_conn)
+ksocknal_del_peer_locked (ksock_peer_t *peer, __u32 ip, int single_share)
{
- ksock_peer_t *peer = route->ksnr_peer;
- ksock_conn_t *conn = route->ksnr_conn;
+ ksock_conn_t *conn;
+ ksock_route_t *route;
+ struct list_head *tmp;
+ struct list_head *nxt;
+ int nshared;
- if (!share)
- route->ksnr_sharecount = 0;
- else {
- route->ksnr_sharecount--;
- if (route->ksnr_sharecount != 0)
- return;
- }
+ LASSERT (!peer->ksnp_closing);
- if (conn != NULL) {
- if (!keep_conn)
- ksocknal_close_conn_locked (conn, 0);
- 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 (tmp, nxt, &peer->ksnp_routes) {
+ route = list_entry(tmp, ksock_route_t, ksnr_list);
+
+ if (single_share && route->ksnr_share_count == 0)
+ continue;
+
+ /* no match */
+ if (!(ip == 0 || route->ksnr_ipaddr == ip))
+ continue;
+
+ if (!single_share)
+ route->ksnr_share_count = 0;
+ else if (route->ksnr_share_count > 0)
+ route->ksnr_share_count--;
+
+ if (route->ksnr_share_count == 0) {
+ /* This deletes associated conns too */
+ ksocknal_del_route_locked (route);
}
+
+ if (single_share)
+ break;
}
- route->ksnr_deleted = 1;
- list_del (&route->ksnr_list);
- ksocknal_put_route (route); /* drop peer's ref */
+ nshared = 0;
+ list_for_each_safe (tmp, nxt, &peer->ksnp_routes) {
+ route = list_entry(tmp, ksock_route_t, ksnr_list);
+ nshared += route->ksnr_share_count;
+ }
+
+ if (nshared == 0) {
+ /* remove everything else if there are no explicit entries
+ * left */
- if (list_empty (&peer->ksnp_routes) &&
- list_empty (&peer->ksnp_conns)) {
- /* I've just removed the last autoconnect route of a peer
- * with no active connections */
- ksocknal_unlink_peer_locked (peer);
+ list_for_each_safe (tmp, nxt, &peer->ksnp_routes) {
+ route = list_entry(tmp, ksock_route_t, ksnr_list);
+
+ /* we should only be removing auto-entries */
+ LASSERT(route->ksnr_share_count == 0);
+ ksocknal_del_route_locked (route);
+ }
+
+ list_for_each_safe (tmp, nxt, &peer->ksnp_conns) {
+ conn = list_entry(tmp, ksock_conn_t, ksnc_list);
+
+ ksocknal_close_conn_locked(conn, 0);
+ }
}
+
+ /* NB peer unlinks itself when last conn/route is removed */
}
int
-ksocknal_del_route (ptl_nid_t nid, __u32 ipaddr, int share, int keep_conn)
+ksocknal_del_peer (ptl_nid_t nid, __u32 ip, int single_share)
{
unsigned long flags;
struct list_head *ptmp;
struct list_head *pnxt;
ksock_peer_t *peer;
- struct list_head *rtmp;
- struct list_head *rnxt;
- ksock_route_t *route;
int lo;
int hi;
int i;
if (!(nid == PTL_NID_ANY || peer->ksnp_nid == nid))
continue;
- list_for_each_safe (rtmp, rnxt, &peer->ksnp_routes) {
- route = list_entry (rtmp, ksock_route_t,
- ksnr_list);
-
- if (!(ipaddr == 0 ||
- route->ksnr_ipaddr == ipaddr))
- continue;
+ ksocknal_del_peer_locked (peer, ip, single_share);
+ rc = 0; /* matched! */
- ksocknal_del_route_locked (route, share, keep_conn);
- rc = 0; /* matched something */
- if (share)
- goto out;
- }
+ if (single_share)
+ break;
}
}
- out:
+
write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock, flags);
return (rc);
list_for_each (ptmp, &ksocknal_data.ksnd_peers[i]) {
peer = list_entry (ptmp, ksock_peer_t, ksnp_list);
- LASSERT (!(list_empty (&peer->ksnp_routes) &&
- list_empty (&peer->ksnp_conns)));
+ LASSERT (!peer->ksnp_closing);
list_for_each (ctmp, &peer->ksnp_conns) {
if (index-- > 0)
return (NULL);
}
-void
-ksocknal_get_peer_addr (ksock_conn_t *conn)
+int
+ksocknal_get_conn_addrs (ksock_conn_t *conn)
{
struct sockaddr_in sin;
int len = sizeof (sin);
(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));
if (rc != 0) {
CERROR ("Error %d getting sock peer IP\n", rc);
- return;
+ return rc;
}
conn->ksnc_ipaddr = ntohl (sin.sin_addr.s_addr);
conn->ksnc_port = ntohs (sin.sin_port);
+
+ rc = conn->ksnc_sock->ops->getname (conn->ksnc_sock,
+ (struct sockaddr *)&sin, &len, 0);
+ if (rc != 0) {
+ CERROR ("Error %d getting sock local IP\n", rc);
+ return rc;
+ }
+
+ conn->ksnc_myipaddr = ntohl (sin.sin_addr.s_addr);
+
+ return 0;
}
unsigned int
-ksocknal_conn_irq (ksock_conn_t *conn)
+ksocknal_sock_irq (struct socket *sock)
{
int irq = 0;
struct dst_entry *dst;
- dst = sk_dst_get (conn->ksnc_sock->sk);
+ if (!ksocknal_tunables.ksnd_irq_affinity)
+ return 0;
+
+ dst = sk_dst_get (sock->sk);
if (dst != NULL) {
if (dst->dev != NULL) {
irq = dst->dev->irq;
dst_release (dst);
}
- /* Didn't need the {get,put}connsock dance to deref ksnc_sock... */
- LASSERT (!conn->ksnc_closing);
return (irq);
}
/* software NIC (irq == 0) || not associated with a scheduler yet.
* Choose the CPU with the fewest connections... */
sched = &ksocknal_data.ksnd_schedulers[0];
- for (i = 1; i < SOCKNAL_N_SCHED; i++)
+ for (i = 1; i < ksocknal_data.ksnd_nschedulers; i++)
if (sched->kss_nconns >
ksocknal_data.ksnd_schedulers[i].kss_nconns)
sched = &ksocknal_data.ksnd_schedulers[i];
}
int
-ksocknal_create_conn (ptl_nid_t nid, ksock_route_t *route,
- struct socket *sock, int bind_irq)
+ksocknal_local_ipvec (__u32 *ipaddrs)
+{
+ int i;
+ int nip;
+
+ read_lock (&ksocknal_data.ksnd_global_lock);
+
+ nip = ksocknal_data.ksnd_ninterfaces;
+ for (i = 0; i < nip; i++) {
+ LASSERT (i < SOCKNAL_MAX_INTERFACES);
+
+ ipaddrs[i] = ksocknal_data.ksnd_interfaces[i].ksni_ipaddr;
+ LASSERT (ipaddrs[i] != 0);
+ }
+
+ read_unlock (&ksocknal_data.ksnd_global_lock);
+ return (nip);
+}
+
+int
+ksocknal_match_peerip (ksock_interface_t *iface, __u32 *ips, int nips)
+{
+ int best_netmatch = 0;
+ int best_xor = 0;
+ int best = -1;
+ int this_xor;
+ int this_netmatch;
+ int i;
+
+ for (i = 0; i < nips; i++) {
+ if (ips[i] == 0)
+ continue;
+
+ this_xor = (ips[i] ^ iface->ksni_ipaddr);
+ this_netmatch = ((this_xor & iface->ksni_netmask) == 0) ? 1 : 0;
+
+ if (!(best < 0 ||
+ best_netmatch < this_netmatch ||
+ (best_netmatch == this_netmatch &&
+ best_xor > this_xor)))
+ continue;
+
+ best = i;
+ best_netmatch = this_netmatch;
+ best_xor = this_xor;
+ }
+
+ LASSERT (best >= 0);
+ return (best);
+}
+
+int
+ksocknal_select_ips(ksock_peer_t *peer, __u32 *peerips, int n_peerips)
+{
+ rwlock_t *global_lock = &ksocknal_data.ksnd_global_lock;
+ unsigned long flags;
+ ksock_interface_t *iface;
+ ksock_interface_t *best_iface;
+ int n_ips;
+ int i;
+ int j;
+ int k;
+ __u32 ip;
+ __u32 xor;
+ int this_netmatch;
+ int best_netmatch;
+ int best_npeers;
+
+ /* CAVEAT EMPTOR: We do all our interface matching with an
+ * exclusive hold of global lock at IRQ priority. We're only
+ * expecting to be dealing with small numbers of interfaces, so the
+ * O(n**3)-ness shouldn't matter */
+
+ /* Also note that I'm not going to return more than n_peerips
+ * interfaces, even if I have more myself */
+
+ write_lock_irqsave(global_lock, flags);
+
+ LASSERT (n_peerips <= SOCKNAL_MAX_INTERFACES);
+ LASSERT (ksocknal_data.ksnd_ninterfaces <= SOCKNAL_MAX_INTERFACES);
+
+ n_ips = MIN(n_peerips, ksocknal_data.ksnd_ninterfaces);
+
+ for (i = 0; peer->ksnp_n_passive_ips < n_ips; i++) {
+ /* ^ yes really... */
+
+ /* If we have any new interfaces, first tick off all the
+ * peer IPs that match old interfaces, then choose new
+ * interfaces to match the remaining peer IPS.
+ * We don't forget interfaces we've stopped using; we might
+ * start using them again... */
+
+ if (i < peer->ksnp_n_passive_ips) {
+ /* Old interface. */
+ ip = peer->ksnp_passive_ips[i];
+ best_iface = ksocknal_ip2iface(ip);
+
+ /* peer passive ips are kept up to date */
+ LASSERT(best_iface != NULL);
+ } else {
+ /* choose a new interface */
+ LASSERT (i == peer->ksnp_n_passive_ips);
+
+ best_iface = NULL;
+ best_netmatch = 0;
+ best_npeers = 0;
+
+ for (j = 0; j < ksocknal_data.ksnd_ninterfaces; j++) {
+ iface = &ksocknal_data.ksnd_interfaces[j];
+ ip = iface->ksni_ipaddr;
+
+ for (k = 0; k < peer->ksnp_n_passive_ips; k++)
+ if (peer->ksnp_passive_ips[k] == ip)
+ break;
+
+ if (k < peer->ksnp_n_passive_ips) /* using it already */
+ continue;
+
+ k = ksocknal_match_peerip(iface, peerips, n_peerips);
+ xor = (ip ^ peerips[k]);
+ this_netmatch = ((xor & iface->ksni_netmask) == 0) ? 1 : 0;
+
+ if (!(best_iface == NULL ||
+ best_netmatch < this_netmatch ||
+ (best_netmatch == this_netmatch &&
+ best_npeers > iface->ksni_npeers)))
+ continue;
+
+ best_iface = iface;
+ best_netmatch = this_netmatch;
+ best_npeers = iface->ksni_npeers;
+ }
+
+ best_iface->ksni_npeers++;
+ ip = best_iface->ksni_ipaddr;
+ peer->ksnp_passive_ips[i] = ip;
+ peer->ksnp_n_passive_ips = i+1;
+ }
+
+ LASSERT (best_iface != NULL);
+
+ /* mark the best matching peer IP used */
+ j = ksocknal_match_peerip(best_iface, peerips, n_peerips);
+ peerips[j] = 0;
+ }
+
+ /* Overwrite input peer IP addresses */
+ memcpy(peerips, peer->ksnp_passive_ips, n_ips * sizeof(*peerips));
+
+ write_unlock_irqrestore(global_lock, flags);
+
+ return (n_ips);
+}
+
+void
+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;
+ unsigned long flags;
+ struct list_head *rtmp;
+ ksock_route_t *route;
+ ksock_interface_t *iface;
+ ksock_interface_t *best_iface;
+ int best_netmatch;
+ int this_netmatch;
+ int best_nroutes;
+ int i;
+ int j;
+
+ /* CAVEAT EMPTOR: We do all our interface matching with an
+ * exclusive hold of global lock at IRQ priority. We're only
+ * expecting to be dealing with small numbers of interfaces, so the
+ * O(n**3)-ness here shouldn't matter */
+
+ write_lock_irqsave(global_lock, flags);
+
+ LASSERT (npeer_ipaddrs <= SOCKNAL_MAX_INTERFACES);
+
+ for (i = 0; i < npeer_ipaddrs; i++) {
+ if (newroute != NULL) {
+ newroute->ksnr_ipaddr = peer_ipaddrs[i];
+ } else {
+ write_unlock_irqrestore(global_lock, flags);
+
+ newroute = ksocknal_create_route(peer_ipaddrs[i], port);
+ if (newroute == NULL)
+ return;
+
+ write_lock_irqsave(global_lock, flags);
+ }
+
+ /* Already got a route? */
+ route = NULL;
+ list_for_each(rtmp, &peer->ksnp_routes) {
+ route = list_entry(rtmp, ksock_route_t, ksnr_list);
+
+ if (route->ksnr_ipaddr == newroute->ksnr_ipaddr)
+ break;
+
+ route = NULL;
+ }
+ if (route != NULL)
+ continue;
+
+ best_iface = NULL;
+ best_nroutes = 0;
+ best_netmatch = 0;
+
+ LASSERT (ksocknal_data.ksnd_ninterfaces <= SOCKNAL_MAX_INTERFACES);
+
+ /* Select interface to connect from */
+ for (j = 0; j < ksocknal_data.ksnd_ninterfaces; j++) {
+ iface = &ksocknal_data.ksnd_interfaces[j];
+
+ /* Using this interface already? */
+ list_for_each(rtmp, &peer->ksnp_routes) {
+ route = list_entry(rtmp, ksock_route_t, ksnr_list);
+
+ if (route->ksnr_myipaddr == iface->ksni_ipaddr)
+ break;
+
+ route = NULL;
+ }
+ if (route != NULL)
+ continue;
+
+ this_netmatch = (((iface->ksni_ipaddr ^
+ newroute->ksnr_ipaddr) &
+ iface->ksni_netmask) == 0) ? 1 : 0;
+
+ if (!(best_iface == NULL ||
+ best_netmatch < this_netmatch ||
+ (best_netmatch == this_netmatch &&
+ best_nroutes > iface->ksni_nroutes)))
+ continue;
+
+ best_iface = iface;
+ best_netmatch = this_netmatch;
+ best_nroutes = iface->ksni_nroutes;
+ }
+
+ if (best_iface == NULL)
+ continue;
+
+ newroute->ksnr_myipaddr = best_iface->ksni_ipaddr;
+ best_iface->ksni_nroutes++;
+
+ ksocknal_add_route_locked(peer, newroute);
+ newroute = NULL;
+ }
+
+ write_unlock_irqrestore(global_lock, flags);
+ if (newroute != NULL)
+ ksocknal_put_route(newroute);
+}
+
+int
+ksocknal_create_conn (ksock_route_t *route, struct socket *sock, int type)
{
+ int passive = (type == SOCKNAL_CONN_NONE);
+ rwlock_t *global_lock = &ksocknal_data.ksnd_global_lock;
+ __u32 ipaddrs[SOCKNAL_MAX_INTERFACES];
+ int nipaddrs;
+ ptl_nid_t nid;
+ struct list_head *tmp;
+ __u64 incarnation;
unsigned long flags;
ksock_conn_t *conn;
- ksock_peer_t *peer;
+ ksock_conn_t *conn2;
+ ksock_peer_t *peer = NULL;
ksock_peer_t *peer2;
ksock_sched_t *sched;
unsigned int irq;
* it, and sock->file has that pre-cooked... */
LASSERT (sock->file != NULL);
LASSERT (file_count(sock->file) > 0);
+ LASSERT (route == NULL || !passive);
rc = ksocknal_setup_sock (sock);
if (rc != 0)
return (rc);
- peer = NULL;
- if (route == NULL) { /* not autoconnect */
- /* Assume this socket connects to a brand new peer */
- peer = ksocknal_create_peer (nid);
- if (peer == NULL)
- return (-ENOMEM);
- }
+ irq = ksocknal_sock_irq (sock);
PORTAL_ALLOC(conn, sizeof(*conn));
- if (conn == NULL) {
- if (peer != NULL)
- ksocknal_put_peer (peer);
+ if (conn == NULL)
return (-ENOMEM);
- }
memset (conn, 0, sizeof (*conn));
conn->ksnc_peer = NULL;
conn->ksnc_route = NULL;
conn->ksnc_sock = sock;
+ conn->ksnc_type = type;
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 */
conn->ksnc_tx_scheduled = 0;
atomic_set (&conn->ksnc_tx_nob, 0);
- ksocknal_get_peer_addr (conn);
-
- irq = ksocknal_conn_irq (conn);
+ /* stash conn's local and remote addrs */
+ rc = ksocknal_get_conn_addrs (conn);
+ if (rc != 0)
+ goto failed_0;
+
+ if (!passive) {
+ /* Active connection sends HELLO eagerly */
+ rc = ksocknal_local_ipvec(ipaddrs);
+ if (rc < 0)
+ goto failed_0;
+ nipaddrs = rc;
+
+ rc = ksocknal_send_hello (conn, ipaddrs, nipaddrs);
+ if (rc != 0)
+ goto failed_0;
+ }
- write_lock_irqsave (&ksocknal_data.ksnd_global_lock, flags);
+ /* Find out/confirm peer's NID and connection type and get the
+ * vector of interfaces she's willing to let me connect to */
+ nid = (route == NULL) ? PTL_NID_ANY : route->ksnr_peer->ksnp_nid;
+ rc = ksocknal_recv_hello (conn, &nid, &incarnation, ipaddrs);
+ if (rc < 0)
+ goto failed_0;
+ nipaddrs = rc;
+ LASSERT (nid != PTL_NID_ANY);
if (route != NULL) {
- /* Autoconnected! */
- LASSERT (route->ksnr_conn == NULL && route->ksnr_connecting);
-
- if (route->ksnr_deleted) {
- /* This conn was autoconnected, but the autoconnect
- * route got deleted while it was being
- * established! */
- write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock,
- flags);
- PORTAL_FREE (conn, sizeof (*conn));
- return (-ESTALE);
+ peer = route->ksnr_peer;
+ atomic_inc(&peer->ksnp_refcount);
+ } else {
+ peer = ksocknal_create_peer(nid);
+ if (peer == NULL) {
+ rc = -ENOMEM;
+ goto failed_0;
}
+ write_lock_irqsave(global_lock, flags);
- /* associate conn/route for auto-reconnect */
- route->ksnr_conn = conn;
- atomic_inc (&conn->ksnc_refcount);
- conn->ksnc_route = route;
- atomic_inc (&route->ksnr_refcount);
- route->ksnr_connecting = 0;
-
- route->ksnr_generation++;
- route->ksnr_retry_interval = SOCKNAL_MIN_RECONNECT_INTERVAL;
+ peer2 = ksocknal_find_peer_locked(nid);
+ if (peer2 == NULL) {
+ /* NB this puts an "empty" peer in the peer
+ * table (which takes my ref) */
+ list_add_tail(&peer->ksnp_list,
+ ksocknal_nid2peerlist(nid));
+ } else {
+ ksocknal_put_peer(peer);
+ peer = peer2;
+ }
+ /* +1 ref for me */
+ atomic_inc(&peer->ksnp_refcount);
- peer = route->ksnr_peer;
+ write_unlock_irqrestore(global_lock, flags);
+ }
+
+ if (!passive) {
+ ksocknal_create_routes(peer, conn->ksnc_port,
+ ipaddrs, nipaddrs);
+ rc = 0;
} else {
- /* Not an autoconnected connection; see if there is an
- * existing peer for this NID */
- peer2 = ksocknal_find_peer_locked (nid);
- if (peer2 != NULL) {
- ksocknal_put_peer (peer);
- peer = peer2;
- } else {
- list_add (&peer->ksnp_list,
- ksocknal_nid2peerlist (nid));
- /* peer list takes over existing ref */
+ rc = ksocknal_select_ips(peer, ipaddrs, nipaddrs);
+ LASSERT (rc >= 0);
+ rc = ksocknal_send_hello (conn, ipaddrs, rc);
+ }
+ if (rc < 0)
+ goto failed_1;
+
+ write_lock_irqsave (global_lock, flags);
+
+ if (peer->ksnp_closing ||
+ (route != NULL && route->ksnr_deleted)) {
+ /* route/peer got closed under me */
+ rc = -ESTALE;
+ goto failed_2;
+ }
+
+ /* Refuse to duplicate an existing connection (both sides might
+ * autoconnect at once), unless this is a loopback connection */
+ if (conn->ksnc_ipaddr != conn->ksnc_myipaddr) {
+ list_for_each(tmp, &peer->ksnp_conns) {
+ conn2 = list_entry(tmp, ksock_conn_t, ksnc_list);
+
+ if (conn2->ksnc_ipaddr != conn->ksnc_ipaddr ||
+ conn2->ksnc_myipaddr != conn->ksnc_myipaddr ||
+ conn2->ksnc_type != conn->ksnc_type ||
+ conn2->ksnc_incarnation != incarnation)
+ continue;
+
+ CWARN("Not creating duplicate connection to "
+ "%u.%u.%u.%u type %d\n",
+ HIPQUAD(conn->ksnc_ipaddr), conn->ksnc_type);
+ rc = -EALREADY;
+ goto failed_2;
}
}
- LASSERT (!peer->ksnp_closing);
+ /* If the connection created by this route didn't bind to the IP
+ * address the route connected to, the connection/route matching
+ * code below probably isn't going to work. */
+ if (route != NULL &&
+ route->ksnr_ipaddr != conn->ksnc_ipaddr) {
+ CERROR("Route "LPX64" %u.%u.%u.%u connected to %u.%u.%u.%u\n",
+ peer->ksnp_nid,
+ HIPQUAD(route->ksnr_ipaddr),
+ HIPQUAD(conn->ksnc_ipaddr));
+ }
- conn->ksnc_peer = peer;
- atomic_inc (&peer->ksnp_refcount);
+ /* Search for a route corresponding to the new connection and
+ * create an association. This allows incoming connections created
+ * by routes in my peer to match my own route entries so I don't
+ * continually create duplicate routes. */
+ list_for_each (tmp, &peer->ksnp_routes) {
+ route = list_entry(tmp, ksock_route_t, ksnr_list);
+
+ if (route->ksnr_ipaddr != conn->ksnc_ipaddr)
+ continue;
+
+ ksocknal_associate_route_conn_locked(route, conn);
+ break;
+ }
+
+ /* Give conn a ref on sock->file since we're going to return success */
+ get_file(sock->file);
+
+ conn->ksnc_peer = peer; /* conn takes my ref on peer */
+ conn->ksnc_incarnation = incarnation;
peer->ksnp_last_alive = jiffies;
peer->ksnp_error = 0;
- list_add (&conn->ksnc_list, &peer->ksnp_conns);
- atomic_inc (&conn->ksnc_refcount);
-
sched = ksocknal_choose_scheduler_locked (irq);
sched->kss_nconns++;
conn->ksnc_scheduler = sched;
+ /* Set the deadline for the outgoing HELLO to drain */
+ conn->ksnc_tx_bufnob = sock->sk->sk_wmem_queued;
+ conn->ksnc_tx_deadline = jiffies +
+ ksocknal_tunables.ksnd_io_timeout * HZ;
+ mb(); /* order with adding to peer's conn list */
+
+ list_add (&conn->ksnc_list, &peer->ksnp_conns);
+ atomic_inc (&conn->ksnc_refcount);
+
/* NB my callbacks block while I hold ksnd_global_lock */
sock->sk->sk_user_data = conn;
sock->sk->sk_data_ready = ksocknal_data_ready;
/* 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, however that
- * confuses the normal packet launching operation, which selects a
- * connection and queues the packet on it without needing an
- * exclusive lock on ksnd_global_lock. */
+ * 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);
ksocknal_queue_tx_locked (tx, conn);
}
- write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock, flags);
+ rc = ksocknal_close_stale_conns_locked(peer, incarnation);
+ 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));
+
+ write_unlock_irqrestore (global_lock, flags);
- if (bind_irq) /* irq binding required */
- ksocknal_bind_irq (irq);
+ ksocknal_bind_irq (irq);
/* Call the callbacks right now to get things going. */
- ksocknal_data_ready (sock->sk, 0);
- ksocknal_write_space (sock->sk);
+ if (ksocknal_getconnsock(conn) == 0) {
+ ksocknal_data_ready (sock->sk, 0);
+ ksocknal_write_space (sock->sk);
+ ksocknal_putconnsock(conn);
+ }
- CDEBUG(D_IOCTL, "conn [%p] registered for nid "LPX64"\n",
- conn, conn->ksnc_peer->ksnp_nid);
+ CWARN("New conn nid:"LPX64" %u.%u.%u.%u -> %u.%u.%u.%u/%d"
+ " incarnation:"LPX64" sched[%d]/%d\n",
+ nid, HIPQUAD(conn->ksnc_myipaddr),
+ HIPQUAD(conn->ksnc_ipaddr), conn->ksnc_port, incarnation,
+ (int)(conn->ksnc_scheduler - ksocknal_data.ksnd_schedulers), irq);
ksocknal_put_conn (conn);
return (0);
+
+ failed_2:
+ if (!peer->ksnp_closing &&
+ list_empty (&peer->ksnp_conns) &&
+ list_empty (&peer->ksnp_routes))
+ ksocknal_unlink_peer_locked(peer);
+ write_unlock_irqrestore(global_lock, flags);
+
+ failed_1:
+ ksocknal_put_peer (peer);
+
+ failed_0:
+ PORTAL_FREE (conn, sizeof(*conn));
+
+ LASSERT (rc != 0);
+ return (rc);
}
void
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;
+ ksock_peer_t *peer = conn->ksnc_peer;
+ ksock_route_t *route;
+ ksock_conn_t *conn2;
+ struct list_head *tmp;
LASSERT (peer->ksnp_error == 0);
LASSERT (!conn->ksnc_closing);
conn->ksnc_closing = 1;
atomic_inc (&ksocknal_data.ksnd_nclosing_conns);
+ /* ksnd_deathrow_conns takes over peer's ref */
+ list_del (&conn->ksnc_list);
+
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);
+
+ conn2 = NULL;
+ list_for_each(tmp, &peer->ksnp_conns) {
+ conn2 = list_entry(tmp, ksock_conn_t, ksnc_list);
+
+ if (conn2->ksnc_route == route &&
+ conn2->ksnc_type == conn->ksnc_type)
+ break;
+
+ conn2 = NULL;
+ }
+ if (conn2 == NULL)
+ route->ksnr_connected &= ~(1 << conn->ksnc_type);
- route->ksnr_conn = NULL;
conn->ksnc_route = NULL;
+#if 0 /* irrelevent with only eager routes */
+ list_del (&route->ksnr_list); /* make route least favourite */
+ list_add_tail (&route->ksnr_list, &peer->ksnp_routes);
+#endif
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)) {
/* No more connections to this 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, int why)
-{
- 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, why);
- }
-
- write_unlock_irqrestore (&ksocknal_data.ksnd_global_lock, flags);
-
- return (did_it);
+ spin_unlock (&ksocknal_data.ksnd_reaper_lock);
}
void
* 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) {
LASSERT (conn->ksnc_route == NULL);
LASSERT (!conn->ksnc_tx_scheduled);
LASSERT (!conn->ksnc_rx_scheduled);
-
- /* 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)
+{
+ 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)
{
- 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 (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, 0);
- }
+ 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
if (!alive) {
/* If the gateway crashed, close all open connections... */
- ksocknal_close_conn (gw_nid, 0);
+ ksocknal_close_matching_conns (gw_nid, 0);
return;
}
}
int
-ksocknal_cmd(struct portal_ioctl_data * data, void * private)
+ksocknal_add_interface(__u32 ipaddress, __u32 netmask)
+{
+ unsigned long flags;
+ ksock_interface_t *iface;
+ int rc;
+ int i;
+ int j;
+ struct list_head *ptmp;
+ ksock_peer_t *peer;
+ struct list_head *rtmp;
+ ksock_route_t *route;
+
+ if (ipaddress == 0 ||
+ netmask == 0)
+ return (-EINVAL);
+
+ write_lock_irqsave(&ksocknal_data.ksnd_global_lock, flags);
+
+ iface = ksocknal_ip2iface(ipaddress);
+ if (iface != NULL) {
+ /* silently ignore dups */
+ rc = 0;
+ } else if (ksocknal_data.ksnd_ninterfaces == SOCKNAL_MAX_INTERFACES) {
+ rc = -ENOSPC;
+ } else {
+ iface = &ksocknal_data.ksnd_interfaces[ksocknal_data.ksnd_ninterfaces++];
+
+ iface->ksni_ipaddr = ipaddress;
+ iface->ksni_netmask = netmask;
+ iface->ksni_nroutes = 0;
+ iface->ksni_npeers = 0;
+
+ for (i = 0; i < ksocknal_data.ksnd_peer_hash_size; i++) {
+ list_for_each(ptmp, &ksocknal_data.ksnd_peers[i]) {
+ peer = list_entry(ptmp, ksock_peer_t, ksnp_list);
+
+ for (j = 0; i < peer->ksnp_n_passive_ips; j++)
+ if (peer->ksnp_passive_ips[j] == ipaddress)
+ iface->ksni_npeers++;
+
+ list_for_each(rtmp, &peer->ksnp_routes) {
+ route = list_entry(rtmp, ksock_route_t, ksnr_list);
+
+ if (route->ksnr_myipaddr == ipaddress)
+ iface->ksni_nroutes++;
+ }
+ }
+ }
+
+ rc = 0;
+ /* NB only new connections will pay attention to the new interface! */
+ }
+
+ write_unlock_irqrestore(&ksocknal_data.ksnd_global_lock, flags);
+
+ return (rc);
+}
+
+void
+ksocknal_peer_del_interface_locked(ksock_peer_t *peer, __u32 ipaddr)
+{
+ struct list_head *tmp;
+ struct list_head *nxt;
+ ksock_route_t *route;
+ ksock_conn_t *conn;
+ int i;
+ int j;
+
+ for (i = 0; i < peer->ksnp_n_passive_ips; i++)
+ if (peer->ksnp_passive_ips[i] == ipaddr) {
+ for (j = i+1; j < peer->ksnp_n_passive_ips; j++)
+ peer->ksnp_passive_ips[j-1] =
+ peer->ksnp_passive_ips[j];
+ peer->ksnp_n_passive_ips--;
+ break;
+ }
+
+ list_for_each_safe(tmp, nxt, &peer->ksnp_routes) {
+ route = list_entry (tmp, ksock_route_t, ksnr_list);
+
+ if (route->ksnr_myipaddr != ipaddr)
+ continue;
+
+ if (route->ksnr_share_count != 0) {
+ /* Manually created; keep, but unbind */
+ route->ksnr_myipaddr = 0;
+ } else {
+ ksocknal_del_route_locked(route);
+ }
+ }
+
+ list_for_each_safe(tmp, nxt, &peer->ksnp_conns) {
+ conn = list_entry(tmp, ksock_conn_t, ksnc_list);
+
+ if (conn->ksnc_myipaddr == ipaddr)
+ ksocknal_close_conn_locked (conn, 0);
+ }
+}
+
+int
+ksocknal_del_interface(__u32 ipaddress)
+{
+ int rc = -ENOENT;
+ unsigned long flags;
+ struct list_head *tmp;
+ struct list_head *nxt;
+ ksock_peer_t *peer;
+ __u32 this_ip;
+ int i;
+ int j;
+
+ write_lock_irqsave(&ksocknal_data.ksnd_global_lock, flags);
+
+ for (i = 0; i < ksocknal_data.ksnd_ninterfaces; i++) {
+ this_ip = ksocknal_data.ksnd_interfaces[i].ksni_ipaddr;
+
+ if (!(ipaddress == 0 ||
+ ipaddress == this_ip))
+ continue;
+
+ rc = 0;
+
+ for (j = i+1; j < ksocknal_data.ksnd_ninterfaces; j++)
+ ksocknal_data.ksnd_interfaces[j-1] =
+ ksocknal_data.ksnd_interfaces[j];
+
+ ksocknal_data.ksnd_ninterfaces--;
+
+ for (j = 0; j < ksocknal_data.ksnd_peer_hash_size; j++) {
+ list_for_each_safe(tmp, nxt, &ksocknal_data.ksnd_peers[j]) {
+ peer = list_entry(tmp, ksock_peer_t, ksnp_list);
+
+ ksocknal_peer_del_interface_locked(peer, this_ip);
+ }
+ }
+ }
+
+ write_unlock_irqrestore(&ksocknal_data.ksnd_global_lock, flags);
+
+ return (rc);
+}
+
+int
+ksocknal_cmd(struct portals_cfg *pcfg, void * private)
{
- int rc = -EINVAL;
+ int rc;
- LASSERT (data != NULL);
+ switch(pcfg->pcfg_command) {
+ case NAL_CMD_GET_INTERFACE: {
+ ksock_interface_t *iface;
- switch(data->ioc_nal_cmd) {
- case NAL_CMD_GET_AUTOCONN: {
- ksock_route_t *route = ksocknal_get_route_by_idx (data->ioc_count);
+ read_lock (&ksocknal_data.ksnd_global_lock);
- if (route == NULL)
+ if (pcfg->pcfg_count < 0 ||
+ pcfg->pcfg_count >= ksocknal_data.ksnd_ninterfaces) {
rc = -ENOENT;
- else {
+ } 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) |
- (route->ksnr_eager ? 8 : 0);
- ksocknal_put_route (route);
+ iface = &ksocknal_data.ksnd_interfaces[pcfg->pcfg_count];
+
+ pcfg->pcfg_id = iface->ksni_ipaddr;
+ pcfg->pcfg_misc = iface->ksni_netmask;
+ pcfg->pcfg_fd = iface->ksni_npeers;
+ pcfg->pcfg_count = iface->ksni_nroutes;
}
+
+ read_unlock (&ksocknal_data.ksnd_global_lock);
+ break;
+ }
+ case NAL_CMD_ADD_INTERFACE: {
+ rc = ksocknal_add_interface(pcfg->pcfg_id, /* IP address */
+ pcfg->pcfg_misc); /* net mask */
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 & 0x01) != 0,
- (data->ioc_flags & 0x02) != 0,
- (data->ioc_flags & 0x04) != 0,
- (data->ioc_flags & 0x08) != 0,
- (data->ioc_flags & 0x10) != 0);
+ case NAL_CMD_DEL_INTERFACE: {
+ rc = ksocknal_del_interface(pcfg->pcfg_id); /* IP address */
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);
+ case NAL_CMD_GET_PEER: {
+ ptl_nid_t nid = 0;
+ __u32 myip = 0;
+ __u32 ip = 0;
+ int port = 0;
+ int conn_count = 0;
+ int share_count = 0;
+
+ rc = ksocknal_get_peer_info(pcfg->pcfg_count, &nid,
+ &myip, &ip, &port,
+ &conn_count, &share_count);
+ pcfg->pcfg_nid = nid;
+ pcfg->pcfg_size = myip;
+ pcfg->pcfg_id = ip;
+ pcfg->pcfg_misc = port;
+ pcfg->pcfg_count = conn_count;
+ pcfg->pcfg_wait = share_count;
+ break;
+ }
+ case NAL_CMD_ADD_PEER: {
+ rc = ksocknal_add_peer (pcfg->pcfg_nid,
+ pcfg->pcfg_id, /* IP */
+ pcfg->pcfg_misc); /* port */
+ break;
+ }
+ case NAL_CMD_DEL_PEER: {
+ rc = ksocknal_del_peer (pcfg->pcfg_nid,
+ pcfg->pcfg_id, /* IP */
+ pcfg->pcfg_flags); /* single_share? */
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 {
+ int txmem;
+ int rxmem;
+ int nagle;
+
+ ksocknal_get_conn_tunables(conn, &txmem, &rxmem, &nagle);
+
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_fd = conn->ksnc_myipaddr;
+ pcfg->pcfg_flags = conn->ksnc_type;
+ pcfg->pcfg_gw_nal = conn->ksnc_scheduler -
+ ksocknal_data.ksnd_schedulers;
+ pcfg->pcfg_count = txmem;
+ pcfg->pcfg_size = rxmem;
+ pcfg->pcfg_wait = nagle;
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)
+ break;
- if (sock != NULL) {
- rc = ksocknal_create_conn (data->ioc_nid, NULL,
- sock, data->ioc_flags);
- if (rc != 0)
- fput (sock->file);
+ 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, type);
+ break;
+ default:
+ rc = -EINVAL;
+ break;
}
+ 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;
}
+ default:
+ rc = -EINVAL;
+ break;
}
return rc;
}
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;
+ 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)) {
- 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]);
+ 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);
- PORTAL_FREE (ksocknal_data.ksnd_fmbs,
- sizeof (ksock_fmb_t) * (SOCKNAL_SMALL_FWD_NMSGS +
- SOCKNAL_LARGE_FWD_NMSGS));
+ 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,
- sizeof (ksock_sched_t) * SOCKNAL_N_SCHED);
+ sizeof (ksock_sched_t) * ksocknal_data.ksnd_nschedulers);
PORTAL_FREE (ksocknal_data.ksnd_peers,
sizeof (struct list_head) *
ksocknal_data.ksnd_peer_hash_size);
}
-void /*__exit*/
-ksocknal_module_fini (void)
+void
+ksocknal_api_shutdown (nal_t *nal)
{
- int i;
+ ksock_sched_t *sched;
+ 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:
-#if CONFIG_SYSCTL
- if (ksocknal_data.ksnd_sysctl != NULL)
- unregister_sysctl_table (ksocknal_data.ksnd_sysctl);
-#endif
- 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 peers */
+ ksocknal_del_peer(PTL_NID_ANY, 0, 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:
- /* Module refcount only gets to zero when all peers
- * have been closed so all lists must be empty */
LASSERT (atomic_read (&ksocknal_data.ksnd_npeers) == 0);
LASSERT (ksocknal_data.ksnd_peers != NULL);
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));
LASSERT (list_empty (&ksocknal_data.ksnd_large_fmp.fmp_blocked_conns));
if (ksocknal_data.ksnd_schedulers != NULL)
- for (i = 0; i < SOCKNAL_N_SCHED; i++) {
+ for (i = 0; i < ksocknal_data.ksnd_nschedulers; i++) {
ksock_sched_t *kss =
&ksocknal_data.ksnd_schedulers[i];
wake_up_all (&ksocknal_data.ksnd_autoconnectd_waitq);
wake_up_all (&ksocknal_data.ksnd_reaper_waitq);
- for (i = 0; i < SOCKNAL_N_SCHED; i++)
- wake_up_all(&ksocknal_data.ksnd_schedulers[i].kss_waitq);
+ for (i = 0; i < ksocknal_data.ksnd_nschedulers; i++) {
+ sched = &ksocknal_data.ksnd_schedulers[i];
+ wake_up_all(&sched->kss_waitq);
+ }
- while (atomic_read (&ksocknal_data.ksnd_nthreads) != 0) {
- CDEBUG (D_NET, "waitinf for %d threads to terminate\n",
- atomic_read (&ksocknal_data.ksnd_nthreads));
+ i = 4;
+ 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);
set_current_state (TASK_UNINTERRUPTIBLE);
schedule_timeout (HZ);
+ read_lock(&ksocknal_data.ksnd_global_lock);
}
+ read_unlock(&ksocknal_data.ksnd_global_lock);
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 following must be sizeof(int) for proc_dointvec() */
- LASSERT(sizeof (ksocknal_data.ksnd_io_timeout) == sizeof (int));
- LASSERT(sizeof (ksocknal_data.ksnd_eager_ack) == sizeof (int));
+ /* 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;
+
+ LASSERT (nal == &ksocknal_api);
- 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;
+ if (nal->nal_refct != 0) {
+ if (actual_limits != NULL)
+ *actual_limits = ksocknal_lib.libnal_ni.ni_actual_limits;
+ /* This module got the first ref */
+ PORTAL_MODULE_USE;
+ return (PTL_OK);
+ }
- ksocknal_lib.nal_data = &ksocknal_data;
+ LASSERT (ksocknal_data.ksnd_init == SOCKNAL_INIT_NOTHING);
memset (&ksocknal_data, 0, sizeof (ksocknal_data)); /* zero pointers */
- ksocknal_data.ksnd_io_timeout = SOCKNAL_IO_TIMEOUT;
- ksocknal_data.ksnd_eager_ack = SOCKNAL_EAGER_ACK;
-#if SOCKNAL_ZC
- ksocknal_data.ksnd_zc_min_frag = SOCKNAL_ZC_MIN_FRAG;
-#endif
-
+ 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]);
rwlock_init(&ksocknal_data.ksnd_global_lock);
- ksocknal_data.ksnd_nal_cb = &ksocknal_lib;
- spin_lock_init (&ksocknal_data.ksnd_nal_cb_lock);
-
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);
/* flag lists/ptrs/locks initialised */
ksocknal_data.ksnd_init = SOCKNAL_INIT_DATA;
+ ksocknal_data.ksnd_nschedulers = ksocknal_nsched();
PORTAL_ALLOC(ksocknal_data.ksnd_schedulers,
- sizeof(ksock_sched_t) * SOCKNAL_N_SCHED);
+ sizeof(ksock_sched_t) * ksocknal_data.ksnd_nschedulers);
if (ksocknal_data.ksnd_schedulers == NULL) {
- ksocknal_module_fini ();
- RETURN(-ENOMEM);
+ ksocknal_api_shutdown (nal);
+ return (-ENOMEM);
}
- for (i = 0; i < SOCKNAL_N_SCHED; i++) {
+ for (i = 0; i < ksocknal_data.ksnd_nschedulers; i++) {
ksock_sched_t *kss = &ksocknal_data.ksnd_schedulers[i];
spin_lock_init (&kss->kss_lock);
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 = requested_pid;
+ process_id.nid = 0;
+
+ rc = lib_init(&ksocknal_lib, nal, process_id,
+ requested_limits, actual_limits);
+ if (rc != PTL_OK) {
+ CERROR("lib_init failed: error %d\n", rc);
+ ksocknal_api_shutdown (nal);
+ 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++) {
+ for (i = 0; i < ksocknal_data.ksnd_nschedulers; i++) {
rc = ksocknal_thread_start (ksocknal_scheduler,
&ksocknal_data.ksnd_schedulers[i]);
if (rc != 0) {
CERROR("Can't spawn socknal scheduler[%d]: %d\n",
i, rc);
- ksocknal_module_fini ();
- RETURN (rc);
+ ksocknal_api_shutdown (nal);
+ 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 (nal);
+ 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 (nal);
+ 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(nal);
+ 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 (nal);
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 (nal);
return (rc);
}
- PORTAL_SYMBOL_REGISTER(ksocknal_ni);
+ /* flag everything initialised */
+ ksocknal_data.ksnd_init = SOCKNAL_INIT_ALL;
+
+ 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, ksocknal_data.ksnd_incarnation);
+
+ return (0);
+}
+void __exit
+ksocknal_module_fini (void)
+{
#ifdef CONFIG_SYSCTL
- /* Press on regardless even if registering sysctl doesn't work */
- ksocknal_data.ksnd_sysctl = register_sysctl_table (ksocknal_top_ctl_table, 0);
+ if (ksocknal_tunables.ksnd_sysctl != NULL)
+ unregister_sysctl_table (ksocknal_tunables.ksnd_sysctl);
#endif
- /* flag everything initialised */
- ksocknal_data.ksnd_init = SOCKNAL_INIT_ALL;
+ 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));
+ LASSERT(sizeof (ksocknal_tunables.ksnd_buffer_size) == sizeof (int));
+ LASSERT(sizeof (ksocknal_tunables.ksnd_nagle) == sizeof (int));
+ LASSERT(sizeof (ksocknal_tunables.ksnd_keepalive_idle) == sizeof (int));
+ LASSERT(sizeof (ksocknal_tunables.ksnd_keepalive_count) == sizeof (int));
+ LASSERT(sizeof (ksocknal_tunables.ksnd_keepalive_intvl) == sizeof (int));
+#if CPU_AFFINITY
+ LASSERT(sizeof (ksocknal_tunables.ksnd_irq_affinity) == sizeof (int));
+#endif
+#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);
- printk(KERN_INFO "Routing socket NAL loaded (Routing %s, initial "
- "mem %d)\n",
- kpr_routing (&ksocknal_data.ksnd_router) ?
- "enabled" : "disabled", pkmem);
+ ksocknal_api.nal_ni_init = ksocknal_api_startup;
+ ksocknal_api.nal_ni_fini = ksocknal_api_shutdown;
+
+ /* 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;
+ ksocknal_tunables.ksnd_buffer_size = SOCKNAL_BUFFER_SIZE;
+ ksocknal_tunables.ksnd_nagle = SOCKNAL_NAGLE;
+ ksocknal_tunables.ksnd_keepalive_idle = SOCKNAL_KEEPALIVE_IDLE;
+ ksocknal_tunables.ksnd_keepalive_count = SOCKNAL_KEEPALIVE_COUNT;
+ ksocknal_tunables.ksnd_keepalive_intvl = SOCKNAL_KEEPALIVE_INTVL;
+#if CPU_AFFINITY
+ ksocknal_tunables.ksnd_irq_affinity = SOCKNAL_IRQ_AFFINITY;
+#endif
+#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, LUSTRE_SRV_PTL_PID, 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