int
lnet_peer_buffer_credits(lnet_ni_t *ni)
{
- /* NI option overrides LNet default */
- if (ni->ni_peerrtrcredits > 0)
- return ni->ni_peerrtrcredits;
- if (peer_buffer_credits > 0)
- return peer_buffer_credits;
-
- /* As an approximation, allow this peer the same number of router
- * buffers as it is allowed outstanding sends */
- return ni->ni_peertxcredits;
+ /* NI option overrides LNet default */
+ if (ni->ni_peerrtrcredits > 0)
+ return ni->ni_peerrtrcredits;
+ if (peer_buffer_credits > 0)
+ return peer_buffer_credits;
+
+ /* As an approximation, allow this peer the same number of router
+ * buffers as it is allowed outstanding sends */
+ return ni->ni_peertxcredits;
}
/* forward ref's */
int
lnet_peers_start_down(void)
{
- return check_routers_before_use;
+ return check_routers_before_use;
}
void
lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive, cfs_time_t when)
{
- if (cfs_time_before(when, lp->lp_timestamp)) { /* out of date information */
- CDEBUG(D_NET, "Out of date\n");
- return;
- }
-
- lp->lp_timestamp = when; /* update timestamp */
- lp->lp_ping_deadline = 0; /* disable ping timeout */
-
- if (lp->lp_alive_count != 0 && /* got old news */
- (!lp->lp_alive) == (!alive)) { /* new date for old news */
- CDEBUG(D_NET, "Old news\n");
- return;
- }
-
- /* Flag that notification is outstanding */
-
- lp->lp_alive_count++;
- lp->lp_alive = !(!alive); /* 1 bit! */
- lp->lp_notify = 1;
- lp->lp_notifylnd |= notifylnd;
+ if (cfs_time_before(when, lp->lp_timestamp)) { /* out of date information */
+ CDEBUG(D_NET, "Out of date\n");
+ return;
+ }
+
+ lp->lp_timestamp = when; /* update timestamp */
+ lp->lp_ping_deadline = 0; /* disable ping timeout */
+
+ if (lp->lp_alive_count != 0 && /* got old news */
+ (!lp->lp_alive) == (!alive)) { /* new date for old news */
+ CDEBUG(D_NET, "Old news\n");
+ return;
+ }
+
+ /* Flag that notification is outstanding */
+
+ lp->lp_alive_count++;
+ lp->lp_alive = !(!alive); /* 1 bit! */
+ lp->lp_notify = 1;
+ lp->lp_notifylnd |= notifylnd;
if (lp->lp_alive)
lp->lp_ping_feats = LNET_PING_FEAT_INVAL; /* reset */
static void
lnet_ni_notify_locked(lnet_ni_t *ni, lnet_peer_t *lp)
{
- int alive;
- int notifylnd;
+ int alive;
+ int notifylnd;
- /* Notify only in 1 thread at any time to ensure ordered notification.
- * NB individual events can be missed; the only guarantee is that you
- * always get the most recent news */
+ /* Notify only in 1 thread at any time to ensure ordered notification.
+ * NB individual events can be missed; the only guarantee is that you
+ * always get the most recent news */
if (lp->lp_notifying || ni == NULL)
- return;
+ return;
- lp->lp_notifying = 1;
+ lp->lp_notifying = 1;
- while (lp->lp_notify) {
- alive = lp->lp_alive;
- notifylnd = lp->lp_notifylnd;
+ while (lp->lp_notify) {
+ alive = lp->lp_alive;
+ notifylnd = lp->lp_notifylnd;
- lp->lp_notifylnd = 0;
- lp->lp_notify = 0;
+ lp->lp_notifylnd = 0;
+ lp->lp_notify = 0;
- if (notifylnd && ni->ni_lnd->lnd_notify != NULL) {
+ if (notifylnd && ni->ni_lnd->lnd_notify != NULL) {
lnet_net_unlock(lp->lp_cpt);
/* A new notification could happen now; I'll handle it
lnet_ni_t *ni;
struct list_head *tmp;
- if (seeded)
- return;
+ if (seeded)
+ return;
- cfs_get_random_bytes(seed, sizeof(seed));
+ cfs_get_random_bytes(seed, sizeof(seed));
/* Nodes with small feet have little entropy
* the NID for this node gives the most entropy in the low bits */
void
lnet_destroy_routes (void)
{
- lnet_del_route(LNET_NIDNET(LNET_NID_ANY), LNET_NID_ANY);
+ lnet_del_route(LNET_NIDNET(LNET_NID_ANY), LNET_NID_ANY);
}
int lnet_get_rtr_pool_cfg(int idx, struct lnet_ioctl_pool_cfg *pool_cfg)
void
lnet_swap_pinginfo(lnet_ping_info_t *info)
{
- int i;
+ int i;
lnet_ni_status_t *stat;
__swab32s(&info->pi_magic);
static void
lnet_wait_known_routerstate(void)
{
- lnet_peer_t *rtr;
+ lnet_peer_t *rtr;
struct list_head *entry;
- int all_known;
+ int all_known;
LASSERT(the_lnet.ln_rc_state == LNET_RC_STATE_RUNNING);
lnet_net_unlock(cpt);
if (all_known)
- return;
+ return;
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(cfs_time_seconds(1));
if (pi == NULL)
goto out;
- for (i = 0; i < LNET_MAX_RTR_NIS; i++) {
- pi->pi_ni[i].ns_nid = LNET_NID_ANY;
- pi->pi_ni[i].ns_status = LNET_NI_STATUS_INVALID;
- }
- rcd->rcd_pinginfo = pi;
-
- LASSERT (!LNetHandleIsInvalid(the_lnet.ln_rc_eqh));
- rc = LNetMDBind((lnet_md_t){.start = pi,
- .user_ptr = rcd,
- .length = LNET_PINGINFO_SIZE,
- .threshold = LNET_MD_THRESH_INF,
- .options = LNET_MD_TRUNCATE,
- .eq_handle = the_lnet.ln_rc_eqh},
- LNET_UNLINK,
- &rcd->rcd_mdh);
- if (rc < 0) {
- CERROR("Can't bind MD: %d\n", rc);
+ for (i = 0; i < LNET_MAX_RTR_NIS; i++) {
+ pi->pi_ni[i].ns_nid = LNET_NID_ANY;
+ pi->pi_ni[i].ns_status = LNET_NI_STATUS_INVALID;
+ }
+ rcd->rcd_pinginfo = pi;
+
+ LASSERT(!LNetHandleIsInvalid(the_lnet.ln_rc_eqh));
+ rc = LNetMDBind((lnet_md_t){.start = pi,
+ .user_ptr = rcd,
+ .length = LNET_PINGINFO_SIZE,
+ .threshold = LNET_MD_THRESH_INF,
+ .options = LNET_MD_TRUNCATE,
+ .eq_handle = the_lnet.ln_rc_eqh},
+ LNET_UNLINK,
+ &rcd->rcd_mdh);
+ if (rc < 0) {
+ CERROR("Can't bind MD: %d\n", rc);
goto out;
}
LASSERT(rc == 0);
static int
lnet_router_check_interval (lnet_peer_t *rtr)
{
- int secs;
+ int secs;
- secs = rtr->lp_alive ? live_router_check_interval :
- dead_router_check_interval;
- if (secs < 0)
- secs = 0;
+ secs = rtr->lp_alive ? live_router_check_interval :
+ dead_router_check_interval;
+ if (secs < 0)
+ secs = 0;
- return secs;
+ return secs;
}
static void
lnet_ping_router_locked (lnet_peer_t *rtr)
{
- lnet_rc_data_t *rcd = NULL;
- cfs_time_t now = cfs_time_current();
- int secs;
+ lnet_rc_data_t *rcd = NULL;
+ cfs_time_t now = cfs_time_current();
+ int secs;
- lnet_peer_addref_locked(rtr);
+ lnet_peer_addref_locked(rtr);
- if (rtr->lp_ping_deadline != 0 && /* ping timed out? */
- cfs_time_after(now, rtr->lp_ping_deadline))
- lnet_notify_locked(rtr, 1, 0, now);
+ if (rtr->lp_ping_deadline != 0 && /* ping timed out? */
+ cfs_time_after(now, rtr->lp_ping_deadline))
+ lnet_notify_locked(rtr, 1, 0, now);
/* Run any outstanding notifications */
lnet_ni_notify_locked(rtr->lp_ni, rtr);
if (rcd == NULL)
return;
- secs = lnet_router_check_interval(rtr);
+ secs = lnet_router_check_interval(rtr);
- CDEBUG(D_NET,
- "rtr %s %d: deadline %lu ping_notsent %d alive %d "
- "alive_count %d lp_ping_timestamp %lu\n",
- libcfs_nid2str(rtr->lp_nid), secs,
- rtr->lp_ping_deadline, rtr->lp_ping_notsent,
- rtr->lp_alive, rtr->lp_alive_count, rtr->lp_ping_timestamp);
+ CDEBUG(D_NET,
+ "rtr %s %d: deadline %lu ping_notsent %d alive %d "
+ "alive_count %d lp_ping_timestamp %lu\n",
+ libcfs_nid2str(rtr->lp_nid), secs,
+ rtr->lp_ping_deadline, rtr->lp_ping_notsent,
+ rtr->lp_alive, rtr->lp_alive_count, rtr->lp_ping_timestamp);
- if (secs != 0 && !rtr->lp_ping_notsent &&
- cfs_time_after(now, cfs_time_add(rtr->lp_ping_timestamp,
- cfs_time_seconds(secs)))) {
- int rc;
- lnet_process_id_t id;
- lnet_handle_md_t mdh;
+ if (secs != 0 && !rtr->lp_ping_notsent &&
+ cfs_time_after(now, cfs_time_add(rtr->lp_ping_timestamp,
+ cfs_time_seconds(secs)))) {
+ int rc;
+ lnet_process_id_t id;
+ lnet_handle_md_t mdh;
- id.nid = rtr->lp_nid;
+ id.nid = rtr->lp_nid;
id.pid = LNET_PID_LUSTRE;
- CDEBUG(D_NET, "Check: %s\n", libcfs_id2str(id));
+ CDEBUG(D_NET, "Check: %s\n", libcfs_id2str(id));
- rtr->lp_ping_notsent = 1;
- rtr->lp_ping_timestamp = now;
+ rtr->lp_ping_notsent = 1;
+ rtr->lp_ping_timestamp = now;
mdh = rcd->rcd_mdh;
LNET_PROTO_PING_MATCHBITS, 0);
lnet_net_lock(rtr->lp_cpt);
- if (rc != 0)
- rtr->lp_ping_notsent = 0; /* no event pending */
- }
+ if (rc != 0)
+ rtr->lp_ping_notsent = 0; /* no event pending */
+ }
- lnet_peer_decref_locked(rtr);
- return;
+ lnet_peer_decref_locked(rtr);
+ return;
}
int
LASSERT(the_lnet.ln_rc_state == LNET_RC_STATE_SHUTDOWN);
- if (check_routers_before_use &&
- dead_router_check_interval <= 0) {
- LCONSOLE_ERROR_MSG(0x10a, "'dead_router_check_interval' must be"
- " set if 'check_routers_before_use' is set"
- "\n");
- return -EINVAL;
- }
+ if (check_routers_before_use &&
+ dead_router_check_interval <= 0) {
+ LCONSOLE_ERROR_MSG(0x10a, "'dead_router_check_interval' must be"
+ " set if 'check_routers_before_use' is set"
+ "\n");
+ return -EINVAL;
+ }
sema_init(&the_lnet.ln_rc_signal, 0);
return -ENOMEM;
}
- if (check_routers_before_use) {
- /* Note that a helpful side-effect of pinging all known routers
- * at startup is that it makes them drop stale connections they
- * may have to a previous instance of me. */
- lnet_wait_known_routerstate();
- }
+ if (check_routers_before_use) {
+ /* Note that a helpful side-effect of pinging all known routers
+ * at startup is that it makes them drop stale connections they
+ * may have to a previous instance of me. */
+ lnet_wait_known_routerstate();
+ }
- return 0;
+ return 0;
}
void
down(&the_lnet.ln_rc_signal);
LASSERT(the_lnet.ln_rc_state == LNET_RC_STATE_SHUTDOWN);
- rc = LNetEQFree(the_lnet.ln_rc_eqh);
- LASSERT (rc == 0);
- return;
+ rc = LNetEQFree(the_lnet.ln_rc_eqh);
+ LASSERT(rc == 0);
+ return;
}
static void
static int
lnet_router_checker(void *arg)
{
- lnet_peer_t *rtr;
+ lnet_peer_t *rtr;
struct list_head *entry;
cfs_block_allsigs();
void
lnet_destroy_rtrbuf(lnet_rtrbuf_t *rb, int npages)
{
- int sz = offsetof(lnet_rtrbuf_t, rb_kiov[npages]);
+ int sz = offsetof(lnet_rtrbuf_t, rb_kiov[npages]);
- while (--npages >= 0)
+ while (--npages >= 0)
__free_page(rb->rb_kiov[npages].kiov_page);
- LIBCFS_FREE(rb, sz);
+ LIBCFS_FREE(rb, sz);
}
static lnet_rtrbuf_t *
lnet_new_rtrbuf(lnet_rtrbufpool_t *rbp, int cpt)
{
- int npages = rbp->rbp_npages;
- int sz = offsetof(lnet_rtrbuf_t, rb_kiov[npages]);
+ int npages = rbp->rbp_npages;
+ int sz = offsetof(lnet_rtrbuf_t, rb_kiov[npages]);
struct page *page;
lnet_rtrbuf_t *rb;
- int i;
+ int i;
LIBCFS_CPT_ALLOC(rb, lnet_cpt_table(), cpt, sz);
if (rb == NULL)
for (i = 0; i < npages; i++) {
page = cfs_page_cpt_alloc(lnet_cpt_table(), cpt,
GFP_KERNEL | __GFP_ZERO);
- if (page == NULL) {
- while (--i >= 0)
+ if (page == NULL) {
+ while (--i >= 0)
__free_page(rb->rb_kiov[i].kiov_page);
- LIBCFS_FREE(rb, sz);
- return NULL;
- }
+ LIBCFS_FREE(rb, sz);
+ return NULL;
+ }
rb->rb_kiov[i].kiov_len = PAGE_SIZE;
- rb->rb_kiov[i].kiov_offset = 0;
- rb->rb_kiov[i].kiov_page = page;
- }
+ rb->rb_kiov[i].kiov_offset = 0;
+ rb->rb_kiov[i].kiov_page = page;
+ }
- return rb;
+ return rb;
}
static void
INIT_LIST_HEAD(&rb_list);
- /* allocate the buffers on a local list first. If all buffers are
+ /* allocate the buffers on a local list first. If all buffers are
* allocated successfully then join this list to the rbp buffer
* list. If not then free all allocated buffers. */
while (num_rb-- > 0) {
libcfs_nid2str(nid),
alive ? "up" : "down");
- if (ni != NULL &&
- LNET_NIDNET(ni->ni_nid) != LNET_NIDNET(nid)) {
- CWARN ("Ignoring notification of %s %s by %s (different net)\n",
- libcfs_nid2str(nid), alive ? "birth" : "death",
- libcfs_nid2str(ni->ni_nid));
- return -EINVAL;
- }
-
- /* can't do predictions... */
- if (cfs_time_after(when, now)) {
- CWARN ("Ignoring prediction from %s of %s %s "
- "%ld seconds in the future\n",
- (ni == NULL) ? "userspace" : libcfs_nid2str(ni->ni_nid),
- libcfs_nid2str(nid), alive ? "up" : "down",
- cfs_duration_sec(cfs_time_sub(when, now)));
- return -EINVAL;
- }
-
- if (ni != NULL && !alive && /* LND telling me she's down */
- !auto_down) { /* auto-down disabled */
- CDEBUG(D_NET, "Auto-down disabled\n");
- return 0;
- }
+ if (ni != NULL &&
+ LNET_NIDNET(ni->ni_nid) != LNET_NIDNET(nid)) {
+ CWARN("Ignoring notification of %s %s by %s (different net)\n",
+ libcfs_nid2str(nid), alive ? "birth" : "death",
+ libcfs_nid2str(ni->ni_nid));
+ return -EINVAL;
+ }
+
+ /* can't do predictions... */
+ if (cfs_time_after(when, now)) {
+ CWARN("Ignoring prediction from %s of %s %s "
+ "%ld seconds in the future\n",
+ (ni == NULL) ? "userspace" : libcfs_nid2str(ni->ni_nid),
+ libcfs_nid2str(nid), alive ? "up" : "down",
+ cfs_duration_sec(cfs_time_sub(when, now)));
+ return -EINVAL;
+ }
+
+ if (ni != NULL && !alive && /* LND telling me she's down */
+ !auto_down) { /* auto-down disabled */
+ CDEBUG(D_NET, "Auto-down disabled\n");
+ return 0;
+ }
lnet_net_lock(cpt);
if (lp == NULL) {
/* nid not found */
lnet_net_unlock(cpt);
- CDEBUG(D_NET, "%s not found\n", libcfs_nid2str(nid));
- return 0;
- }
-
- /* We can't fully trust LND on reporting exact peer last_alive
- * if he notifies us about dead peer. For example ksocklnd can
- * call us with when == _time_when_the_node_was_booted_ if
- * no connections were successfully established */
- if (ni != NULL && !alive && when < lp->lp_last_alive)
- when = lp->lp_last_alive;
-
- lnet_notify_locked(lp, ni == NULL, alive, when);
+ CDEBUG(D_NET, "%s not found\n", libcfs_nid2str(nid));
+ return 0;
+ }
+
+ /* We can't fully trust LND on reporting exact peer last_alive
+ * if he notifies us about dead peer. For example ksocklnd can
+ * call us with when == _time_when_the_node_was_booted_ if
+ * no connections were successfully established */
+ if (ni != NULL && !alive && when < lp->lp_last_alive)
+ when = lp->lp_last_alive;
+
+ lnet_notify_locked(lp, ni == NULL, alive, when);
if (ni != NULL)
lnet_ni_notify_locked(ni, lp);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff