#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
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_ZERO_COPY, "zero_copy",
- &ksocknal_data.ksnd_zc_min_frag, sizeof (int),
+ &ksocknal_tunables.ksnd_zc_min_frag, sizeof (int),
0644, NULL, &proc_dointvec},
#endif
{SOCKNAL_SYSCTL_TYPED, "typed",
- &ksocknal_data.ksnd_typed_conns, sizeof (int),
+ &ksocknal_tunables.ksnd_typed_conns, sizeof (int),
0644, NULL, &proc_dointvec},
{SOCKNAL_SYSCTL_MIN_BULK, "min_bulk",
- &ksocknal_data.ksnd_min_bulk, sizeof (int),
+ &ksocknal_tunables.ksnd_min_bulk, sizeof (int),
0644, NULL, &proc_dointvec},
{ 0 }
};
{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)
-{
- return PTL_OK;
-}
-
void
ksocknal_api_lock(nal_t *nal, unsigned long *flags)
{
return (milliseconds);
}
-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
- */
-
int
ksocknal_set_mynid(ptl_nid_t nid)
{
/* Set the deadline for the outgoing HELLO to drain */
conn->ksnc_tx_deadline = jiffies +
- ksocknal_data.ksnd_io_timeout * HZ;
+ ksocknal_tunables.ksnd_io_timeout * HZ;
list_add (&conn->ksnc_list, &peer->ksnp_conns);
atomic_inc (&conn->ksnc_refcount);
}
void
-ksocknal_module_fini (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:
-#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:
+ case SOCKNAL_INIT_LIB:
/* No more calls to ksocknal_cmd() to create new
* autoroutes/connections since we're being unloaded. */
- PtlNIFini(ksocknal_ni);
/* Delete all autoroute entries */
ksocknal_del_route(PTL_NID_ANY, 0, 0, 0);
/* 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:
kpr_deregister (&ksocknal_data.ksnd_router);
ksocknal_free_buffers();
+
+ ksocknal_data.ksnd_init = SOCKNAL_INIT_NOTHING;
/* fall through */
case SOCKNAL_INIT_NOTHING:
}
-void __init
+void
ksocknal_init_incarnation (void)
{
struct timeval tv;
(((__u64)tv.tv_sec) * 1000000) + tv.tv_usec;
}
-int __init
-ksocknal_module_init (void)
+int
+ksocknal_api_startup (nal_t *nal, ptl_pid_t requested_pid,
+ ptl_ni_limits_t *requested_limits,
+ ptl_ni_limits_t *actual_limits)
{
- int pkmem = atomic_read(&portal_kmemory);
- int rc;
- int i;
- int j;
+ ptl_process_id_t process_id;
+ int pkmem = atomic_read(&portal_kmemory);
+ int rc;
+ int i;
+ int j;
- /* 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));
- /* check ksnr_connected/connecting field large enough */
- LASSERT(SOCKNAL_CONN_NTYPES <= 4);
-
- LASSERT (ksocknal_data.ksnd_init == SOCKNAL_INIT_NOTHING);
+ LASSERT (nal == &ksocknal_api);
- ksocknal_api.forward = ksocknal_api_forward;
- ksocknal_api.shutdown = ksocknal_api_shutdown;
- 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.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;
- ksocknal_data.ksnd_typed_conns = SOCKNAL_TYPED_CONNS;
- ksocknal_data.ksnd_min_bulk = SOCKNAL_MIN_BULK;
-#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_schedulers,
sizeof(ksock_sched_t) * SOCKNAL_N_SCHED);
if (ksocknal_data.ksnd_schedulers == NULL) {
- ksocknal_module_fini ();
+ ksocknal_api_shutdown (&ksocknal_api);
return (-ENOMEM);
}
init_waitqueue_head (&kss->kss_waitq);
}
- rc = PtlNIInit(ksocknal_init, 32, 4, 0, &ksocknal_ni);
- if (rc != 0) {
- CERROR("ksocknal: PtlNIInit failed: error %d\n", rc);
- ksocknal_module_fini ();
+ /* 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 ();
+ 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 ();
+ 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 ();
+ ksocknal_api_shutdown (&ksocknal_api);
return (rc);
}
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 */
+ /* Only allocate forwarding buffers if there's a router */
for (i = 0; i < (SOCKNAL_SMALL_FWD_NMSGS +
SOCKNAL_LARGE_FWD_NMSGS); i++) {
PORTAL_ALLOC(fmb, offsetof(ksock_fmb_t,
fmb_kiov[pool->fmp_buff_pages]));
if (fmb == NULL) {
- ksocknal_module_fini();
+ ksocknal_api_shutdown(&ksocknal_api);
return (-ENOMEM);
}
fmb->fmb_kiov[j].kiov_page = alloc_page(GFP_KERNEL);
if (fmb->fmb_kiov[j].kiov_page == NULL) {
- ksocknal_module_fini ();
+ ksocknal_api_shutdown (&ksocknal_api);
return (-ENOMEM);
}
}
}
- 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);
-
-#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);
-#endif
/* flag everything initialised */
ksocknal_data.ksnd_init = SOCKNAL_INIT_ALL;
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_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
MODULE_DESCRIPTION("Kernel TCP Socket NAL v0.01");
MODULE_LICENSE("GPL");
module_init(ksocknal_module_init);
module_exit(ksocknal_module_fini);
-EXPORT_SYMBOL (ksocknal_ni);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff