*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*
* lnet/lnet/lib-move.c
*
#include <lnet/lib-lnet.h>
#include <linux/nsproxy.h>
+#include <lnet/lnet_rdma.h>
#include <net/net_namespace.h>
static int local_nid_dist_zero = 1;
struct lnet_peer_ni *sd_gw_lpni;
struct lnet_peer_net *sd_peer_net;
struct lnet_msg *sd_msg;
- lnet_nid_t sd_dst_nid;
- lnet_nid_t sd_src_nid;
- lnet_nid_t sd_rtr_nid;
+ struct lnet_nid sd_dst_nid;
+ struct lnet_nid sd_src_nid;
+ struct lnet_nid sd_rtr_nid;
int sd_cpt;
int sd_md_cpt;
__u32 sd_send_case;
}
int
-lnet_fail_nid(lnet_nid_t nid, unsigned int threshold)
+lnet_fail_nid(lnet_nid_t nid4, unsigned int threshold)
{
struct lnet_test_peer *tp;
struct list_head *el;
struct list_head *next;
+ struct lnet_nid nid;
LIST_HEAD(cull);
+ lnet_nid4_to_nid(nid4, &nid);
/* NB: use lnet_net_lock(0) to serialize operations on test peers */
if (threshold != 0) {
/* Adding a new entry */
tp = list_entry(el, struct lnet_test_peer, tp_list);
if (tp->tp_threshold == 0 || /* needs culling anyway */
- nid == LNET_NID_ANY || /* removing all entries */
- tp->tp_nid == nid) { /* matched this one */
+ LNET_NID_IS_ANY(&nid) || /* removing all entries */
+ nid_same(&tp->tp_nid, &nid)) { /* matched this one */
list_move(&tp->tp_list, &cull);
}
}
lnet_net_unlock(0);
- while (!list_empty(&cull)) {
- tp = list_entry(cull.next, struct lnet_test_peer, tp_list);
-
+ while ((tp = list_first_entry_or_null(&cull,
+ struct lnet_test_peer,
+ tp_list)) != NULL) {
list_del(&tp->tp_list);
LIBCFS_FREE(tp, sizeof(*tp));
}
}
static int
-fail_peer (lnet_nid_t nid, int outgoing)
+fail_peer(struct lnet_nid *nid, int outgoing)
{
struct lnet_test_peer *tp;
struct list_head *el;
continue;
}
- if (tp->tp_nid == LNET_NID_ANY || /* fail every peer */
- nid == tp->tp_nid) { /* fail this peer */
+ if (LNET_NID_IS_ANY(&tp->tp_nid) || /* fail every peer */
+ nid_same(nid, &tp->tp_nid)) { /* fail this peer */
fail = 1;
if (tp->tp_threshold != LNET_MD_THRESH_INF) {
lnet_net_unlock(0);
- while (!list_empty(&cull)) {
- tp = list_entry(cull.next, struct lnet_test_peer, tp_list);
+ while ((tp = list_first_entry_or_null(&cull,
+ struct lnet_test_peer,
+ tp_list)) != NULL) {
list_del(&tp->tp_list);
-
LIBCFS_FREE(tp, sizeof(*tp));
}
}
void
-lnet_prep_send(struct lnet_msg *msg, int type, struct lnet_process_id target,
+lnet_prep_send(struct lnet_msg *msg, int type, struct lnet_processid *target,
unsigned int offset, unsigned int len)
{
msg->msg_type = type;
- msg->msg_target = target;
+ msg->msg_target = *target;
msg->msg_len = len;
msg->msg_offset = offset;
lnet_setpayloadbuffer(msg);
memset (&msg->msg_hdr, 0, sizeof (msg->msg_hdr));
- msg->msg_hdr.type = cpu_to_le32(type);
+ msg->msg_hdr.type = type;
/* dest_nid will be overwritten by lnet_select_pathway() */
- msg->msg_hdr.dest_nid = cpu_to_le64(target.nid);
- msg->msg_hdr.dest_pid = cpu_to_le32(target.pid);
+ msg->msg_hdr.dest_nid = target->nid;
+ msg->msg_hdr.dest_pid = target->pid;
/* src_nid will be set later */
- msg->msg_hdr.src_pid = cpu_to_le32(the_lnet.ln_pid);
- msg->msg_hdr.payload_length = cpu_to_le32(len);
+ msg->msg_hdr.src_pid = the_lnet.ln_pid;
+ msg->msg_hdr.payload_length = len;
}
-static void
+void
lnet_ni_send(struct lnet_ni *ni, struct lnet_msg *msg)
{
void *priv = msg->msg_private;
int rc;
LASSERT(!in_interrupt());
- LASSERT(ni->ni_nid == LNET_NID_LO_0 ||
+ LASSERT(nid_is_lo0(&ni->ni_nid) ||
(msg->msg_txcredit && msg->msg_peertxcredit));
rc = (ni->ni_net->net_lnd->lnd_send)(ni, priv, msg);
if (rc != 0) {
CERROR("recv from %s / send to %s aborted: "
"eager_recv failed %d\n",
- libcfs_nid2str(msg->msg_rxpeer->lpni_nid),
- libcfs_id2str(msg->msg_target), rc);
+ libcfs_nidstr(&msg->msg_rxpeer->lpni_nid),
+ libcfs_idstr(&msg->msg_target), rc);
LASSERT(rc < 0); /* required by my callers */
}
LASSERT(!do_send || msg->msg_tx_delayed);
LASSERT(!msg->msg_receiving);
LASSERT(msg->msg_tx_committed);
+
/* can't get here if we're sending to the loopback interface */
- LASSERT(lp->lpni_nid != the_lnet.ln_loni->ni_nid);
+ if (the_lnet.ln_loni)
+ LASSERT(!nid_same(&lp->lpni_nid, &the_lnet.ln_loni->ni_nid));
/* NB 'lp' is always the next hop */
if ((msg->msg_target.pid & LNET_PID_USERFLAG) == 0 &&
LNET_STATS_TYPE_DROP);
CNETERR("Dropping message for %s: peer not alive\n",
- libcfs_id2str(msg->msg_target));
+ libcfs_idstr(&msg->msg_target));
msg->msg_health_status = LNET_MSG_STATUS_REMOTE_DROPPED;
if (do_send)
lnet_finalize(msg, -EHOSTUNREACH);
CNETERR("Aborting message for %s: LNetM[DE]Unlink() already "
"called on the MD/ME.\n",
- libcfs_id2str(msg->msg_target));
+ libcfs_idstr(&msg->msg_target));
if (do_send) {
msg->msg_no_resend = true;
CDEBUG(D_NET, "msg %p to %s canceled and will not be resent\n",
- msg, libcfs_id2str(msg->msg_target));
+ msg, libcfs_idstr(&msg->msg_target));
lnet_finalize(msg, -ECANCELED);
}
!list_empty(&lp->lpni_txq));
msg->msg_peertxcredit = 1;
- lp->lpni_txqnob += msg->msg_len + sizeof(struct lnet_hdr);
+ lp->lpni_txqnob += msg->msg_len + sizeof(struct lnet_hdr_nid4);
lp->lpni_txcredits--;
if (lp->lpni_txcredits < lp->lpni_mintxcredits)
}
}
+ if (unlikely(!list_empty(&the_lnet.ln_delay_rules)) &&
+ lnet_delay_rule_match_locked(&msg->msg_hdr, msg)) {
+ msg->msg_tx_delayed = 1;
+ return LNET_CREDIT_WAIT;
+ }
+
/* unset the tx_delay flag as we're going to send it now */
msg->msg_tx_delayed = 0;
}
LASSERT(!list_empty(&rbp->rbp_bufs));
- rb = list_entry(rbp->rbp_bufs.next, struct lnet_rtrbuf, rb_list);
+ rb = list_first_entry(&rbp->rbp_bufs, struct lnet_rtrbuf, rb_list);
list_del(&rb->rb_list);
msg->msg_niov = rbp->rbp_npages;
tq->tq_credits++;
atomic_inc(&ni->ni_tx_credits);
if (tq->tq_credits <= 0) {
- msg2 = list_entry(tq->tq_delayed.next,
- struct lnet_msg, msg_list);
+ msg2 = list_first_entry(&tq->tq_delayed,
+ struct lnet_msg, msg_list);
list_del(&msg2->msg_list);
LASSERT(msg2->msg_txni == ni);
LASSERT((txpeer->lpni_txcredits < 0) ==
!list_empty(&txpeer->lpni_txq));
- txpeer->lpni_txqnob -= msg->msg_len + sizeof(struct lnet_hdr);
+ txpeer->lpni_txqnob -= msg->msg_len +
+ sizeof(struct lnet_hdr_nid4);
LASSERT(txpeer->lpni_txqnob >= 0);
txpeer->lpni_txcredits++;
if (txpeer->lpni_txcredits <= 0) {
int msg2_cpt;
- msg2 = list_entry(txpeer->lpni_txq.next,
- struct lnet_msg, msg_list);
+ msg2 = list_first_entry(&txpeer->lpni_txq,
+ struct lnet_msg, msg_list);
list_del(&msg2->msg_list);
spin_unlock(&txpeer->lpni_lock);
if (list_empty(&rbp->rbp_msgs))
return;
- msg = list_entry(rbp->rbp_msgs.next,
- struct lnet_msg, msg_list);
+ msg = list_first_entry(&rbp->rbp_msgs,
+ struct lnet_msg, msg_list);
list_del(&msg->msg_list);
(void)lnet_post_routed_recv_locked(msg, 1);
} else if (!list_empty(&lp->lp_rtrq)) {
int msg2_cpt;
- msg2 = list_entry(lp->lp_rtrq.next,
- struct lnet_msg, msg_list);
+ msg2 = list_first_entry(&lp->lp_rtrq,
+ struct lnet_msg, msg_list);
list_del(&msg2->msg_list);
msg2_cpt = msg2->msg_rx_cpt;
spin_unlock(&lp->lp_lock);
* preferred, then let's use it
*/
if (best_ni) {
- lpni_is_preferred = lnet_peer_is_pref_nid_locked(lpni,
- best_ni->ni_nid);
+ lpni_is_preferred = lnet_peer_is_pref_nid_locked(
+ lpni, &best_ni->ni_nid);
CDEBUG(D_NET, "%s lpni_is_preferred = %d\n",
- libcfs_nid2str(best_ni->ni_nid),
+ libcfs_nidstr(&best_ni->ni_nid),
lpni_is_preferred);
} else {
lpni_is_preferred = false;
if (best_lpni)
CDEBUG(D_NET, "n:[%s, %s] h:[%d, %d] p:[%d, %d] c:[%d, %d] s:[%d, %d]\n",
- libcfs_nid2str(lpni->lpni_nid),
- libcfs_nid2str(best_lpni->lpni_nid),
+ libcfs_nidstr(&lpni->lpni_nid),
+ libcfs_nidstr(&best_lpni->lpni_nid),
lpni_healthv, best_lpni_healthv,
lpni_sel_prio, best_sel_prio,
lpni->lpni_txcredits, best_lpni_credits,
}
CDEBUG(D_NET, "sd_best_lpni = %s\n",
- libcfs_nid2str(best_lpni->lpni_nid));
+ libcfs_nidstr(&best_lpni->lpni_nid));
return best_lpni;
}
struct lnet_route *route;
int rc;
bool best_rte_is_preferred = false;
- lnet_nid_t gw_pnid;
+ struct lnet_nid *gw_pnid;
CDEBUG(D_NET, "Looking up a route to %s, from %s\n",
libcfs_net2str(rnet->lrn_net), libcfs_net2str(src_net));
list_for_each_entry(route, &rnet->lrn_routes, lr_list) {
if (!lnet_is_route_alive(route))
continue;
- gw_pnid = route->lr_gateway->lp_primary_nid;
+ gw_pnid = &route->lr_gateway->lp_primary_nid;
/* no protection on below fields, but it's harmless */
if (last_route && (last_route->lr_seq - route->lr_seq < 0))
if (!lpni) {
CDEBUG(D_NET,
"Gateway %s does not have a peer NI on net %s\n",
- libcfs_nid2str(gw_pnid),
+ libcfs_nidstr(gw_pnid),
libcfs_net2str(src_net));
continue;
}
best_gw_ni = lpni;
best_rte_is_preferred = true;
CDEBUG(D_NET, "preferred gw = %s\n",
- libcfs_nid2str(gw_pnid));
+ libcfs_nidstr(gw_pnid));
continue;
} else if ((!rc) && best_rte_is_preferred)
/* The best route we found so far is in the preferred
if (!lpni) {
CDEBUG(D_NET,
"Gateway %s does not have a peer NI on net %s\n",
- libcfs_nid2str(gw_pnid),
+ libcfs_nidstr(gw_pnid),
libcfs_net2str(src_net));
continue;
}
return best_route;
}
+static inline unsigned int
+lnet_dev_prio_of_md(struct lnet_ni *ni, unsigned int dev_idx)
+{
+ if (dev_idx == UINT_MAX)
+ return UINT_MAX;
+
+ if (!ni || !ni->ni_net || !ni->ni_net->net_lnd ||
+ !ni->ni_net->net_lnd->lnd_get_dev_prio)
+ return UINT_MAX;
+
+ return ni->ni_net->net_lnd->lnd_get_dev_prio(ni, dev_idx);
+}
+
static struct lnet_ni *
lnet_get_best_ni(struct lnet_net *local_net, struct lnet_ni *best_ni,
struct lnet_peer *peer, struct lnet_peer_net *peer_net,
- int md_cpt)
+ struct lnet_msg *msg, int md_cpt)
{
- struct lnet_ni *ni = NULL;
+ struct lnet_libmd *md = msg->msg_md;
+ unsigned int offset = msg->msg_offset;
unsigned int shortest_distance;
+ struct lnet_ni *ni = NULL;
int best_credits;
int best_healthv;
__u32 best_sel_prio;
+ unsigned int best_dev_prio;
+ unsigned int dev_idx = UINT_MAX;
+ bool gpu = md ? (md->md_flags & LNET_MD_FLAG_GPU) : false;
+
+ if (gpu) {
+ struct page *page = lnet_get_first_page(md, offset);
+
+ dev_idx = lnet_get_dev_idx(page);
+ }
/*
* If there is no peer_ni that we can send to on this network,
if (best_ni == NULL) {
best_sel_prio = LNET_MAX_SELECTION_PRIORITY;
shortest_distance = UINT_MAX;
+ best_dev_prio = UINT_MAX;
best_credits = INT_MIN;
best_healthv = 0;
} else {
+ best_dev_prio = lnet_dev_prio_of_md(best_ni, dev_idx);
shortest_distance = cfs_cpt_distance(lnet_cpt_table(), md_cpt,
best_ni->ni_dev_cpt);
best_credits = atomic_read(&best_ni->ni_tx_credits);
int ni_healthv;
int ni_fatal;
__u32 ni_sel_prio;
+ unsigned int ni_dev_prio;
ni_credits = atomic_read(&ni->ni_tx_credits);
ni_healthv = atomic_read(&ni->ni_healthv);
md_cpt,
ni->ni_dev_cpt);
+ ni_dev_prio = lnet_dev_prio_of_md(ni, dev_idx);
+
/*
* All distances smaller than the NUMA range
* are treated equally.
*/
- if (distance < lnet_numa_range)
+ if (!gpu && distance < lnet_numa_range)
distance = lnet_numa_range;
/*
- * Select on health, shorter distance, available
- * credits, then round-robin.
+ * Select on health, selection policy, direct dma prio,
+ * shorter distance, available credits, then round-robin.
*/
if (ni_fatal)
continue;
if (best_ni)
- CDEBUG(D_NET, "compare ni %s [c:%d, d:%d, s:%d, p:%u] with best_ni %s [c:%d, d:%d, s:%d, p:%u]\n",
- libcfs_nid2str(ni->ni_nid), ni_credits, distance,
- ni->ni_seq, ni_sel_prio,
- (best_ni) ? libcfs_nid2str(best_ni->ni_nid)
+ CDEBUG(D_NET, "compare ni %s [c:%d, d:%d, s:%d, p:%u, g:%u, h:%d] with best_ni %s [c:%d, d:%d, s:%d, p:%u, g:%u, h:%d]\n",
+ libcfs_nidstr(&ni->ni_nid), ni_credits, distance,
+ ni->ni_seq, ni_sel_prio, ni_dev_prio, ni_healthv,
+ (best_ni) ? libcfs_nidstr(&best_ni->ni_nid)
: "not selected", best_credits, shortest_distance,
(best_ni) ? best_ni->ni_seq : 0,
- best_sel_prio);
+ best_sel_prio, best_dev_prio, best_healthv);
else
goto select_ni;
else if (ni_sel_prio < best_sel_prio)
goto select_ni;
+ if (ni_dev_prio > best_dev_prio)
+ continue;
+ else if (ni_dev_prio < best_dev_prio)
+ goto select_ni;
+
if (distance > shortest_distance)
continue;
else if (distance < shortest_distance)
select_ni:
best_sel_prio = ni_sel_prio;
+ best_dev_prio = ni_dev_prio;
shortest_distance = distance;
best_healthv = ni_healthv;
best_ni = ni;
}
CDEBUG(D_NET, "selected best_ni %s\n",
- (best_ni) ? libcfs_nid2str(best_ni->ni_nid) : "no selection");
+ (best_ni) ? libcfs_nidstr(&best_ni->ni_nid) : "no selection");
return best_ni;
}
+static bool
+lnet_reserved_msg(struct lnet_msg *msg)
+{
+ if (msg->msg_type == LNET_MSG_PUT) {
+ if (msg->msg_hdr.msg.put.ptl_index == LNET_RESERVED_PORTAL)
+ return true;
+ } else if (msg->msg_type == LNET_MSG_GET) {
+ if (msg->msg_hdr.msg.get.ptl_index == LNET_RESERVED_PORTAL)
+ return true;
+ }
+ return false;
+}
+
/*
* Traffic to the LNET_RESERVED_PORTAL may not trigger peer discovery,
* because such traffic is required to perform discovery. We therefore
static bool
lnet_msg_discovery(struct lnet_msg *msg)
{
- if (msg->msg_type == LNET_MSG_PUT) {
- if (msg->msg_hdr.msg.put.ptl_index != LNET_RESERVED_PORTAL)
- return true;
- } else if (msg->msg_type == LNET_MSG_GET) {
- if (msg->msg_hdr.msg.get.ptl_index != LNET_RESERVED_PORTAL)
- return true;
- }
- return false;
+ return !(lnet_reserved_msg(msg) || lnet_msg_is_response(msg));
}
#define SRC_SPEC 0x0001
struct lnet_msg *msg = sd->sd_msg;
int cpt = sd->sd_cpt;
+ if (the_lnet.ln_state != LNET_STATE_RUNNING)
+ return -ESHUTDOWN;
+
/* No send credit hassles with LOLND */
lnet_ni_addref_locked(the_lnet.ln_loni, cpt);
- msg->msg_hdr.dest_nid = cpu_to_le64(the_lnet.ln_loni->ni_nid);
+ msg->msg_hdr.dest_nid = the_lnet.ln_loni->ni_nid;
if (!msg->msg_routing)
- msg->msg_hdr.src_nid =
- cpu_to_le64(the_lnet.ln_loni->ni_nid);
+ msg->msg_hdr.src_nid = the_lnet.ln_loni->ni_nid;
msg->msg_target.nid = the_lnet.ln_loni->ni_nid;
lnet_msg_commit(msg, cpt);
msg->msg_txni = the_lnet.ln_loni;
__u32 send_case = sd->sd_send_case;
int rc;
__u32 routing = send_case & REMOTE_DST;
- struct lnet_rsp_tracker *rspt;
+ struct lnet_rsp_tracker *rspt;
- /*
- * Increment sequence number of the selected peer so that we
- * pick the next one in Round Robin.
+ /* Increment sequence number of the selected peer, peer net,
+ * local ni and local net so that we pick the next ones
+ * in Round Robin.
*/
- best_lpni->lpni_seq++;
+ best_lpni->lpni_peer_net->lpn_peer->lp_send_seq++;
+ best_lpni->lpni_peer_net->lpn_seq =
+ best_lpni->lpni_peer_net->lpn_peer->lp_send_seq;
+ best_lpni->lpni_seq = best_lpni->lpni_peer_net->lpn_seq;
+ the_lnet.ln_net_seq++;
+ best_ni->ni_net->net_seq = the_lnet.ln_net_seq;
+ best_ni->ni_seq = best_ni->ni_net->net_seq;
+
+ CDEBUG(D_NET, "%s NI seq info: [%d:%d:%d:%u] %s LPNI seq info [%d:%d:%d:%u]\n",
+ libcfs_nidstr(&best_ni->ni_nid),
+ best_ni->ni_seq, best_ni->ni_net->net_seq,
+ atomic_read(&best_ni->ni_tx_credits),
+ best_ni->ni_sel_priority,
+ libcfs_nidstr(&best_lpni->lpni_nid),
+ best_lpni->lpni_seq, best_lpni->lpni_peer_net->lpn_seq,
+ best_lpni->lpni_txcredits,
+ best_lpni->lpni_sel_priority);
/*
* grab a reference on the peer_ni so it sticks around even if
* the configuration has changed. We don't have a hold on the best_ni
* yet, and it may have vanished.
*/
- cpt2 = lnet_cpt_of_nid_locked(best_lpni->lpni_nid, best_ni);
+ cpt2 = lnet_cpt_of_nid_locked(&best_lpni->lpni_nid, best_ni);
if (sd->sd_cpt != cpt2) {
__u32 seq = lnet_get_dlc_seq_locked();
lnet_net_unlock(sd->sd_cpt);
* originator and set it here.
*/
if (!msg->msg_routing)
- msg->msg_hdr.src_nid = cpu_to_le64(msg->msg_txni->ni_nid);
+ msg->msg_hdr.src_nid = msg->msg_txni->ni_nid;
if (routing) {
msg->msg_target_is_router = 1;
* lnet_select_pathway() function and is never changed.
* It's safe to use it here.
*/
- msg->msg_hdr.dest_nid = cpu_to_le64(final_dst_lpni->lpni_nid);
+ final_dst_lpni->lpni_peer_net->lpn_peer->lp_send_seq++;
+ final_dst_lpni->lpni_peer_net->lpn_seq =
+ final_dst_lpni->lpni_peer_net->lpn_peer->lp_send_seq;
+ final_dst_lpni->lpni_seq =
+ final_dst_lpni->lpni_peer_net->lpn_seq;
+ msg->msg_hdr.dest_nid = final_dst_lpni->lpni_nid;
} else {
/*
* if we're not routing set the dest_nid to the best peer
* ni NID that we picked earlier in the algorithm.
*/
- msg->msg_hdr.dest_nid = cpu_to_le64(msg->msg_txpeer->lpni_nid);
+ msg->msg_hdr.dest_nid = msg->msg_txpeer->lpni_nid;
}
/*
if (msg->msg_md) {
rspt = msg->msg_md->md_rspt_ptr;
if (rspt) {
- rspt->rspt_next_hop_nid = msg->msg_txpeer->lpni_nid;
+ rspt->rspt_next_hop_nid =
+ msg->msg_txpeer->lpni_nid;
CDEBUG(D_NET, "rspt_next_hop_nid = %s\n",
- libcfs_nid2str(rspt->rspt_next_hop_nid));
+ libcfs_nidstr(&rspt->rspt_next_hop_nid));
}
}
if (!rc)
CDEBUG(D_NET, "TRACE: %s(%s:%s) -> %s(%s:%s) %s : %s try# %d\n",
- libcfs_nid2str(msg->msg_hdr.src_nid),
- libcfs_nid2str(msg->msg_txni->ni_nid),
- libcfs_nid2str(sd->sd_src_nid),
- libcfs_nid2str(msg->msg_hdr.dest_nid),
- libcfs_nid2str(sd->sd_dst_nid),
- libcfs_nid2str(msg->msg_txpeer->lpni_nid),
- libcfs_nid2str(sd->sd_rtr_nid),
+ libcfs_nidstr(&msg->msg_hdr.src_nid),
+ libcfs_nidstr(&msg->msg_txni->ni_nid),
+ libcfs_nidstr(&sd->sd_src_nid),
+ libcfs_nidstr(&msg->msg_hdr.dest_nid),
+ libcfs_nidstr(&sd->sd_dst_nid),
+ libcfs_nidstr(&msg->msg_txpeer->lpni_nid),
+ libcfs_nidstr(&sd->sd_rtr_nid),
lnet_msgtyp2str(msg->msg_type), msg->msg_retry_count);
return rc;
if (!lnet_peer_is_multi_rail(lpni->lpni_peer_net->lpn_peer) &&
!lnet_msg_is_response(msg) && lpni->lpni_pref_nnids == 0) {
CDEBUG(D_NET, "Setting preferred local NID %s on NMR peer %s\n",
- libcfs_nid2str(lni->ni_nid),
- libcfs_nid2str(lpni->lpni_nid));
- lnet_peer_ni_set_non_mr_pref_nid(lpni, lni->ni_nid);
+ libcfs_nidstr(&lni->ni_nid),
+ libcfs_nidstr(&lpni->lpni_nid));
+ lnet_peer_ni_set_non_mr_pref_nid(lpni, &lni->ni_nid);
}
}
/* the destination lpni is set before we get here. */
/* find local NI */
- sd->sd_best_ni = lnet_nid2ni_locked(sd->sd_src_nid, sd->sd_cpt);
+ sd->sd_best_ni = lnet_nid_to_ni_locked(&sd->sd_src_nid, sd->sd_cpt);
if (!sd->sd_best_ni) {
- CERROR("Can't send to %s: src %s is not a "
- "local nid\n", libcfs_nid2str(sd->sd_dst_nid),
- libcfs_nid2str(sd->sd_src_nid));
+ CERROR("Can't send to %s: src %s is not a local nid\n",
+ libcfs_nidstr(&sd->sd_dst_nid),
+ libcfs_nidstr(&sd->sd_src_nid));
return -EINVAL;
}
static int
lnet_handle_spec_local_mr_dst(struct lnet_send_data *sd)
{
- sd->sd_best_ni = lnet_nid2ni_locked(sd->sd_src_nid, sd->sd_cpt);
+ sd->sd_best_ni = lnet_nid_to_ni_locked(&sd->sd_src_nid, sd->sd_cpt);
if (!sd->sd_best_ni) {
- CERROR("Can't send to %s: src %s is not a "
- "local nid\n", libcfs_nid2str(sd->sd_dst_nid),
- libcfs_nid2str(sd->sd_src_nid));
+ CERROR("Can't send to %s: src %s is not a local nid\n",
+ libcfs_nidstr(&sd->sd_dst_nid),
+ libcfs_nidstr(&sd->sd_src_nid));
return -EINVAL;
}
if (sd->sd_best_lpni &&
- sd->sd_best_lpni->lpni_nid == the_lnet.ln_loni->ni_nid)
+ nid_same(&sd->sd_best_lpni->lpni_nid,
+ &the_lnet.ln_loni->ni_nid))
return lnet_handle_lo_send(sd);
else if (sd->sd_best_lpni)
return lnet_handle_send(sd);
CERROR("can't send to %s. no NI on %s\n",
- libcfs_nid2str(sd->sd_dst_nid),
+ libcfs_nidstr(&sd->sd_dst_nid),
libcfs_net2str(sd->sd_best_ni->ni_net->net_id));
return -EHOSTUNREACH;
lnet_find_best_ni_on_spec_net(struct lnet_ni *cur_best_ni,
struct lnet_peer *peer,
struct lnet_peer_net *peer_net,
- int cpt,
- bool incr_seq)
+ struct lnet_msg *msg,
+ int cpt)
{
struct lnet_net *local_net;
struct lnet_ni *best_ni;
* 3. Round Robin
*/
best_ni = lnet_get_best_ni(local_net, cur_best_ni,
- peer, peer_net, cpt);
-
- if (incr_seq && best_ni)
- best_ni->ni_seq++;
+ peer, peer_net, msg, cpt);
return best_ni;
}
int cpt)
{
struct lnet_peer *peer;
+ struct lnet_peer_ni *new_lpni;
int rc;
lnet_peer_ni_addref_locked(lpni);
lnet_peer_ni_decref_locked(lpni);
return rc;
}
- /* The peer may have changed. */
- peer = lpni->lpni_peer_net->lpn_peer;
+
+ new_lpni = lnet_peer_ni_find_locked(&lpni->lpni_nid);
+ if (!new_lpni) {
+ lnet_peer_ni_decref_locked(lpni);
+ return -ENOENT;
+ }
+
+ peer = new_lpni->lpni_peer_net->lpn_peer;
spin_lock(&peer->lp_lock);
- if (lnet_peer_is_uptodate_locked(peer)) {
+ if (lpni == new_lpni && lnet_peer_is_uptodate_locked(peer)) {
+ /* The peer NI did not change and the peer is up to date.
+ * Nothing more to do.
+ */
spin_unlock(&peer->lp_lock);
lnet_peer_ni_decref_locked(lpni);
+ lnet_peer_ni_decref_locked(new_lpni);
return 0;
}
- /* queue message and return */
+ spin_unlock(&peer->lp_lock);
+
+ /* Either the peer NI changed during discovery, or the peer isn't up
+ * to date. In both cases we want to queue the message on the
+ * (possibly new) peer's pending queue and queue the peer for discovery
+ */
msg->msg_sending = 0;
msg->msg_txpeer = NULL;
- list_add_tail(&msg->msg_list, &peer->lp_dc_pendq);
- spin_unlock(&peer->lp_lock);
+ lnet_net_unlock(cpt);
+ lnet_peer_queue_message(peer, msg);
+ lnet_net_lock(cpt);
lnet_peer_ni_decref_locked(lpni);
+ lnet_peer_ni_decref_locked(new_lpni);
CDEBUG(D_NET, "msg %p delayed. %s pending discovery\n",
- msg, libcfs_nid2str(peer->lp_primary_nid));
+ msg, libcfs_nidstr(&peer->lp_primary_nid));
return LNET_DC_WAIT;
}
static int
lnet_handle_find_routed_path(struct lnet_send_data *sd,
- lnet_nid_t dst_nid,
+ struct lnet_nid *dst_nid,
struct lnet_peer_ni **gw_lpni,
struct lnet_peer **gw_peer)
{
int rc;
- __u32 local_lnet;
struct lnet_peer *gw;
struct lnet_peer *lp;
struct lnet_peer_net *lpn;
struct lnet_peer_ni *lpni = NULL;
struct lnet_peer_ni *gwni = NULL;
bool route_found = false;
- lnet_nid_t src_nid = (sd->sd_src_nid != LNET_NID_ANY) ? sd->sd_src_nid :
- (sd->sd_best_ni != NULL) ? sd->sd_best_ni->ni_nid :
- LNET_NID_ANY;
+ struct lnet_nid *src_nid =
+ !LNET_NID_IS_ANY(&sd->sd_src_nid) || !sd->sd_best_ni
+ ? &sd->sd_src_nid
+ : &sd->sd_best_ni->ni_nid;
int best_lpn_healthv = 0;
__u32 best_lpn_sel_prio = LNET_MAX_SELECTION_PRIORITY;
- CDEBUG(D_NET, "using src nid %s for route restriction\n",
- libcfs_nid2str(src_nid));
+ CDEBUG(D_NET, "%s route (%s) from local NI %s to destination %s\n",
+ LNET_NID_IS_ANY(&sd->sd_rtr_nid) ? "Lookup" : "Specified",
+ libcfs_nidstr(&sd->sd_rtr_nid), libcfs_nidstr(src_nid),
+ libcfs_nidstr(&sd->sd_dst_nid));
/* If a router nid was specified then we are replying to a GET or
* sending an ACK. In this case we use the gateway associated with the
* specified router nid.
*/
- if (sd->sd_rtr_nid != LNET_NID_ANY) {
- gwni = lnet_find_peer_ni_locked(sd->sd_rtr_nid);
+ if (!LNET_NID_IS_ANY(&sd->sd_rtr_nid)) {
+ gwni = lnet_peer_ni_find_locked(&sd->sd_rtr_nid);
if (gwni) {
gw = gwni->lpni_peer_net->lpn_peer;
lnet_peer_ni_decref_locked(gwni);
- if (gw->lp_rtr_refcount) {
- local_lnet = LNET_NIDNET(sd->sd_rtr_nid);
+ if (gw->lp_rtr_refcount)
route_found = true;
- }
} else {
CWARN("No peer NI for gateway %s. Attempting to find an alternative route.\n",
- libcfs_nid2str(sd->sd_rtr_nid));
+ libcfs_nidstr(&sd->sd_rtr_nid));
}
}
if (!route_found) {
- if (sd->sd_msg->msg_routing) {
+ if (sd->sd_msg->msg_routing || !LNET_NID_IS_ANY(src_nid)) {
/* If I'm routing this message then I need to find the
* next hop based on the destination NID
+ *
+ * We also find next hop based on the destination NID
+ * if the source NI was specified
*/
- best_rnet = lnet_find_rnet_locked(LNET_NIDNET(sd->sd_dst_nid));
+ best_rnet = lnet_find_rnet_locked(LNET_NID_NET(&sd->sd_dst_nid));
if (!best_rnet) {
- CERROR("Unable to route message to %s - Route table may be misconfigured\n",
- libcfs_nid2str(sd->sd_dst_nid));
+ CERROR("Unable to send message from %s to %s - Route table may be misconfigured\n",
+ (src_nid && LNET_NID_IS_ANY(src_nid)) ?
+ "any local NI" :
+ libcfs_nidstr(src_nid),
+ libcfs_nidstr(&sd->sd_dst_nid));
return -EHOSTUNREACH;
}
+ CDEBUG(D_NET, "best_rnet %s\n",
+ libcfs_net2str(best_rnet->lrn_net));
} else {
/* we've already looked up the initial lpni using
* dst_nid
if (!rnet)
continue;
- if (!best_lpn) {
- best_lpn = lpn;
- best_rnet = rnet;
- }
+ if (!best_lpn)
+ goto use_lpn;
+ else
+ CDEBUG(D_NET, "n[%s, %s] h[%d, %d], p[%u, %u], s[%d, %d]\n",
+ libcfs_net2str(lpn->lpn_net_id),
+ libcfs_net2str(best_lpn->lpn_net_id),
+ lpn->lpn_healthv,
+ best_lpn->lpn_healthv,
+ lpn->lpn_sel_priority,
+ best_lpn->lpn_sel_priority,
+ lpn->lpn_seq,
+ best_lpn->lpn_seq);
/* select the preferred peer net */
if (best_lpn_healthv > lpn->lpn_healthv)
if (!best_lpn) {
CERROR("peer %s has no available nets\n",
- libcfs_nid2str(sd->sd_dst_nid));
+ libcfs_nidstr(&sd->sd_dst_nid));
return -EHOSTUNREACH;
}
+ CDEBUG(D_NET, "selected best_lpn %s\n",
+ libcfs_net2str(best_lpn->lpn_net_id));
+
sd->sd_best_lpni = lnet_find_best_lpni(sd->sd_best_ni,
- sd->sd_dst_nid,
+ lnet_nid_to_nid4(&sd->sd_dst_nid),
lp,
best_lpn->lpn_net_id);
if (!sd->sd_best_lpni) {
CERROR("peer %s is unreachable\n",
- libcfs_nid2str(sd->sd_dst_nid));
+ libcfs_nidstr(&sd->sd_dst_nid));
return -EHOSTUNREACH;
}
* NI's so update the final destination we selected
*/
sd->sd_final_dst_lpni = sd->sd_best_lpni;
-
- /* Increment the sequence number of the remote lpni so
- * we can round robin over the different interfaces of
- * the remote lpni
- */
- sd->sd_best_lpni->lpni_seq++;
}
/*
* when adding a route.
*/
best_route = lnet_find_route_locked(best_rnet,
- LNET_NIDNET(src_nid),
+ LNET_NID_NET(src_nid),
sd->sd_best_lpni,
&last_route, &gwni);
if (!best_route) {
CERROR("no route to %s from %s\n",
- libcfs_nid2str(dst_nid),
- libcfs_nid2str(src_nid));
+ libcfs_nidstr(dst_nid),
+ libcfs_nidstr(src_nid));
return -EHOSTUNREACH;
}
if (!gwni) {
CERROR("Internal Error. Route expected to %s from %s\n",
- libcfs_nid2str(dst_nid),
- libcfs_nid2str(src_nid));
+ libcfs_nidstr(dst_nid),
+ libcfs_nidstr(src_nid));
return -EFAULT;
}
gw = best_route->lr_gateway;
LASSERT(gw == gwni->lpni_peer_net->lpn_peer);
- local_lnet = best_route->lr_lnet;
}
/*
- * Discover this gateway if it hasn't already been discovered.
- * This means we might delay the message until discovery has
- * completed
+ * If the router checker is not active then discover the gateway here.
+ * This ensures we are able to take advantage of multi-rail routing, but
+ * if the router checker is active then we do not unecessarily delay
+ * messages while the gateway is being checked by the dedicated monitor
+ * thread.
+ *
+ * NB: We're only checking the alive_router_check_interval here, rather
+ * than calling lnet_router_checker_active(), because the other
+ * conditions that are checked by that function are either
+ * irrelevant (the_lnet.ln_routing) or must be true (list of routers
+ * is not empty)
*/
- sd->sd_msg->msg_src_nid_param = sd->sd_src_nid;
- rc = lnet_initiate_peer_discovery(gwni, sd->sd_msg, sd->sd_cpt);
- if (rc)
- return rc;
-
- if (!sd->sd_best_ni)
- sd->sd_best_ni = lnet_find_best_ni_on_spec_net(NULL, gw,
- lnet_peer_get_net_locked(gw,
- local_lnet),
- sd->sd_md_cpt,
- true);
+ if (alive_router_check_interval <= 0) {
+ rc = lnet_initiate_peer_discovery(gwni, sd->sd_msg, sd->sd_cpt);
+ if (rc)
+ return rc;
+ }
if (!sd->sd_best_ni) {
- CERROR("Internal Error. Expected local ni on %s but non found :%s\n",
- libcfs_net2str(local_lnet),
- libcfs_nid2str(sd->sd_src_nid));
- return -EFAULT;
+ lpn = gwni->lpni_peer_net;
+ sd->sd_best_ni = lnet_find_best_ni_on_spec_net(NULL, gw, lpn,
+ sd->sd_msg,
+ sd->sd_md_cpt);
+ if (!sd->sd_best_ni) {
+ CERROR("Internal Error. Expected local ni on %s but non found: %s\n",
+ libcfs_net2str(lpn->lpn_net_id),
+ libcfs_nidstr(&sd->sd_src_nid));
+ return -EFAULT;
+ }
}
*gw_lpni = gwni;
*gw_peer = gw;
/*
- * increment the sequence numbers since now we're sure we're
- * going to use this path
+ * increment the sequence number since now we're sure we're
+ * going to use this route
*/
- if (sd->sd_rtr_nid == LNET_NID_ANY) {
+ if (LNET_NID_IS_ANY(&sd->sd_rtr_nid)) {
LASSERT(best_route && last_route);
best_route->lr_seq = last_route->lr_seq + 1;
- if (best_lpn)
- best_lpn->lpn_seq++;
}
return 0;
struct lnet_peer *gw_peer = NULL;
/* find local NI */
- sd->sd_best_ni = lnet_nid2ni_locked(sd->sd_src_nid, sd->sd_cpt);
+ sd->sd_best_ni = lnet_nid_to_ni_locked(&sd->sd_src_nid, sd->sd_cpt);
if (!sd->sd_best_ni) {
- CERROR("Can't send to %s: src %s is not a "
- "local nid\n", libcfs_nid2str(sd->sd_dst_nid),
- libcfs_nid2str(sd->sd_src_nid));
+ CERROR("Can't send to %s: src %s is not a local nid\n",
+ libcfs_nidstr(&sd->sd_dst_nid),
+ libcfs_nidstr(&sd->sd_src_nid));
return -EINVAL;
}
- rc = lnet_handle_find_routed_path(sd, sd->sd_dst_nid, &gw_lpni,
- &gw_peer);
+ rc = lnet_handle_find_routed_path(sd, &sd->sd_dst_nid,
+ &gw_lpni, &gw_peer);
if (rc)
return rc;
struct lnet_ni *
lnet_find_best_ni_on_local_net(struct lnet_peer *peer, int md_cpt,
- bool discovery)
+ struct lnet_msg *msg, bool discovery)
{
- struct lnet_peer_net *peer_net = NULL;
+ struct lnet_peer_net *lpn = NULL;
+ struct lnet_peer_net *best_lpn = NULL;
+ struct lnet_net *net = NULL;
+ struct lnet_net *best_net = NULL;
struct lnet_ni *best_ni = NULL;
- int lpn_healthv = 0;
+ int best_lpn_healthv = 0;
+ int best_net_healthv = 0;
+ int net_healthv;
+ __u32 best_lpn_sel_prio = LNET_MAX_SELECTION_PRIORITY;
+ __u32 lpn_sel_prio;
+ __u32 best_net_sel_prio = LNET_MAX_SELECTION_PRIORITY;
+ __u32 net_sel_prio;
+
+ /* if this is a discovery message and lp_disc_net_id is
+ * specified then use that net to send the discovery on.
+ */
+ if (discovery && peer->lp_disc_net_id) {
+ best_lpn = lnet_peer_get_net_locked(peer, peer->lp_disc_net_id);
+ if (best_lpn && lnet_get_net_locked(best_lpn->lpn_net_id))
+ goto select_best_ni;
+ }
/*
* The peer can have multiple interfaces, some of them can be on
*/
/* go through all the peer nets and find the best_ni */
- list_for_each_entry(peer_net, &peer->lp_peer_nets, lpn_peer_nets) {
+ list_for_each_entry(lpn, &peer->lp_peer_nets, lpn_peer_nets) {
/*
* The peer's list of nets can contain non-local nets. We
* want to only examine the local ones.
*/
- if (!lnet_get_net_locked(peer_net->lpn_net_id))
+ net = lnet_get_net_locked(lpn->lpn_net_id);
+ if (!net)
continue;
- /* always select the lpn with the best health */
- if (lpn_healthv <= peer_net->lpn_healthv)
- lpn_healthv = peer_net->lpn_healthv;
+ lpn_sel_prio = lpn->lpn_sel_priority;
+ net_healthv = lnet_get_net_healthv_locked(net);
+ net_sel_prio = net->net_sel_priority;
+
+ if (!best_lpn)
+ goto select_lpn;
else
+ CDEBUG(D_NET,
+ "n[%s, %s] ph[%d, %d], pp[%u, %u], nh[%d, %d], np[%u, %u], ps[%u, %u], ns[%u, %u]\n",
+ libcfs_net2str(lpn->lpn_net_id),
+ libcfs_net2str(best_lpn->lpn_net_id),
+ lpn->lpn_healthv,
+ best_lpn_healthv,
+ lpn_sel_prio,
+ best_lpn_sel_prio,
+ net_healthv,
+ best_net_healthv,
+ net_sel_prio,
+ best_net_sel_prio,
+ lpn->lpn_seq,
+ best_lpn->lpn_seq,
+ net->net_seq,
+ best_net->net_seq);
+
+ /* always select the lpn with the best health */
+ if (best_lpn_healthv > lpn->lpn_healthv)
continue;
+ else if (best_lpn_healthv < lpn->lpn_healthv)
+ goto select_lpn;
- best_ni = lnet_find_best_ni_on_spec_net(best_ni, peer, peer_net,
- md_cpt, false);
+ /* select the preferred peer and local nets */
+ if (best_lpn_sel_prio < lpn_sel_prio)
+ continue;
+ else if (best_lpn_sel_prio > lpn_sel_prio)
+ goto select_lpn;
- /*
- * if this is a discovery message and lp_disc_net_id is
- * specified then use that net to send the discovery on.
- */
- if (peer->lp_disc_net_id == peer_net->lpn_net_id &&
- discovery)
- break;
+ if (best_net_healthv > net_healthv)
+ continue;
+ else if (best_net_healthv < net_healthv)
+ goto select_lpn;
+
+ if (best_net_sel_prio < net_sel_prio)
+ continue;
+ else if (best_net_sel_prio > net_sel_prio)
+ goto select_lpn;
+
+ if (best_lpn->lpn_seq < lpn->lpn_seq)
+ continue;
+ else if (best_lpn->lpn_seq > lpn->lpn_seq)
+ goto select_lpn;
+
+ /* round robin over the local networks */
+ if (best_net->net_seq <= net->net_seq)
+ continue;
+
+select_lpn:
+ best_net_healthv = net_healthv;
+ best_net_sel_prio = net_sel_prio;
+ best_lpn_healthv = lpn->lpn_healthv;
+ best_lpn_sel_prio = lpn_sel_prio;
+ best_lpn = lpn;
+ best_net = net;
}
- if (best_ni)
- /* increment sequence number so we can round robin */
- best_ni->ni_seq++;
+ if (best_lpn) {
+ /* Select the best NI on the same net as best_lpn chosen
+ * above
+ */
+select_best_ni:
+ CDEBUG(D_NET, "selected best_lpn %s\n",
+ libcfs_net2str(best_lpn->lpn_net_id));
+ best_ni = lnet_find_best_ni_on_spec_net(NULL, peer, best_lpn,
+ msg, md_cpt);
+ }
return best_ni;
}
if (lpni_entry->lpni_pref_nnids == 0)
continue;
LASSERT(lpni_entry->lpni_pref_nnids == 1);
- best_ni = lnet_nid2ni_locked(lpni_entry->lpni_pref.nid, cpt);
+ best_ni = lnet_nid_to_ni_locked(&lpni_entry->lpni_pref.nid,
+ cpt);
break;
}
lnet_select_preferred_best_ni(struct lnet_send_data *sd)
{
struct lnet_ni *best_ni = NULL;
- struct lnet_peer_ni *best_lpni = sd->sd_best_lpni;
/*
* We must use a consistent source address when sending to a
*
* So we need to pick the NI the peer prefers for this
* particular network.
+ *
+ * An exception is traffic on LNET_RESERVED_PORTAL. Internal LNet
+ * traffic doesn't care which source NI is used, and we don't actually
+ * want to restrict local recovery pings to a single source NI.
*/
+ if (!lnet_reserved_msg(sd->sd_msg))
+ best_ni = lnet_find_existing_preferred_best_ni(sd->sd_best_lpni,
+ sd->sd_cpt);
- best_ni = lnet_find_existing_preferred_best_ni(sd->sd_best_lpni,
- sd->sd_cpt);
+ if (!best_ni)
+ best_ni = lnet_find_best_ni_on_spec_net(NULL, sd->sd_peer,
+ sd->sd_best_lpni->lpni_peer_net,
+ sd->sd_msg,
+ sd->sd_md_cpt);
- /* if best_ni is still not set just pick one */
+ /* If there is no best_ni we don't have a route */
if (!best_ni) {
- best_ni =
- lnet_find_best_ni_on_spec_net(NULL, sd->sd_peer,
- sd->sd_best_lpni->lpni_peer_net,
- sd->sd_md_cpt, true);
- /* If there is no best_ni we don't have a route */
- if (!best_ni) {
- CERROR("no path to %s from net %s\n",
- libcfs_nid2str(best_lpni->lpni_nid),
- libcfs_net2str(best_lpni->lpni_net->net_id));
- return -EHOSTUNREACH;
- }
+ CERROR("no path to %s from net %s\n",
+ libcfs_nidstr(&sd->sd_best_lpni->lpni_nid),
+ libcfs_net2str(sd->sd_best_lpni->lpni_net->net_id));
+ return -EHOSTUNREACH;
}
sd->sd_best_ni = best_ni;
* output a relevant message and fail the send
*/
if (!sd->sd_best_lpni) {
- CERROR("Internal fault. Unable to send msg %s to %s. "
- "NID not known\n",
+ CERROR("Internal fault. Unable to send msg %s to %s. NID not known\n",
lnet_msgtyp2str(sd->sd_msg->msg_type),
- libcfs_nid2str(sd->sd_dst_nid));
+ libcfs_nidstr(&sd->sd_dst_nid));
return -EFAULT;
}
sd->sd_best_ni = lnet_find_best_ni_on_spec_net(NULL,
sd->sd_peer,
sd->sd_best_lpni->lpni_peer_net,
- sd->sd_md_cpt,
- true);
+ sd->sd_msg,
+ sd->sd_md_cpt);
if (!sd->sd_best_ni) {
CERROR("Unable to forward message to %s. No local NI available\n",
- libcfs_nid2str(sd->sd_dst_nid));
+ libcfs_nidstr(&sd->sd_dst_nid));
rc = -EHOSTUNREACH;
}
} else
sd->sd_best_ni =
lnet_find_best_ni_on_spec_net(NULL, sd->sd_peer,
sd->sd_best_lpni->lpni_peer_net,
- sd->sd_md_cpt, true);
+ sd->sd_msg,
+ sd->sd_md_cpt);
if (!sd->sd_best_ni) {
/*
* We're not going to deal with not able to send
* a response to the provided final destination
*/
- CERROR("Can't send response to %s. "
- "No local NI available\n",
- libcfs_nid2str(sd->sd_dst_nid));
+ CERROR("Can't send response to %s. No local NI available\n",
+ libcfs_nidstr(&sd->sd_dst_nid));
return -EHOSTUNREACH;
}
*/
sd->sd_best_ni = lnet_find_best_ni_on_local_net(sd->sd_peer,
sd->sd_md_cpt,
+ sd->sd_msg,
lnet_msg_discovery(sd->sd_msg));
if (sd->sd_best_ni) {
sd->sd_best_lpni =
- lnet_find_best_lpni(sd->sd_best_ni, sd->sd_dst_nid,
+ lnet_find_best_lpni(sd->sd_best_ni,
+ lnet_nid_to_nid4(&sd->sd_dst_nid),
sd->sd_peer,
sd->sd_best_ni->ni_net->net_id);
* network
*/
if (sd->sd_best_lpni &&
- sd->sd_best_lpni->lpni_nid == the_lnet.ln_loni->ni_nid) {
+ nid_same(&sd->sd_best_lpni->lpni_nid,
+ &the_lnet.ln_loni->ni_nid)) {
/*
* in case we initially started with a routed
* destination, let's reset to local
CERROR("Internal Error. Expected to have a best_lpni: "
"%s -> %s\n",
- libcfs_nid2str(sd->sd_src_nid),
- libcfs_nid2str(sd->sd_dst_nid));
+ libcfs_nidstr(&sd->sd_src_nid),
+ libcfs_nidstr(&sd->sd_dst_nid));
return -EFAULT;
}
struct lnet_peer_ni *gw;
struct lnet_peer *gw_peer;
- rc = lnet_handle_find_routed_path(sd, sd->sd_dst_nid, &gw,
- &gw_peer);
+ rc = lnet_handle_find_routed_path(
+ sd, &sd->sd_dst_nid, &gw, &gw_peer);
if (rc < 0) {
- CERROR("Can't send response to %s. "
- "No route available\n",
- libcfs_nid2str(sd->sd_dst_nid));
+ CERROR("Can't send response to %s. No route available\n",
+ libcfs_nidstr(&sd->sd_dst_nid));
return -EHOSTUNREACH;
} else if (rc > 0) {
return rc;
* need to select the destination which we can route to and if
* there are multiple, we need to round robin.
*/
- rc = lnet_handle_find_routed_path(sd, sd->sd_dst_nid, &gw_lpni,
- &gw_peer);
+ rc = lnet_handle_find_routed_path(sd, &sd->sd_dst_nid,
+ &gw_lpni, &gw_peer);
if (rc)
return rc;
* find the router and that'll find the best NI if we didn't find
* it already.
*/
- rc = lnet_handle_find_routed_path(sd, sd->sd_dst_nid, &gw_lpni,
+ rc = lnet_handle_find_routed_path(sd, &sd->sd_dst_nid, &gw_lpni,
&gw_peer);
if (rc)
return rc;
CDEBUG(D_NET, "Source %s%s to %s %s %s destination\n",
(send_case & SRC_SPEC) ? "Specified: " : "ANY",
- (send_case & SRC_SPEC) ? libcfs_nid2str(sd->sd_src_nid) : "",
+ (send_case & SRC_SPEC) ? libcfs_nidstr(&sd->sd_src_nid) : "",
(send_case & MR_DST) ? "MR: " : "NMR: ",
- libcfs_nid2str(sd->sd_dst_nid),
+ libcfs_nidstr(&sd->sd_dst_nid),
(send_case & LOCAL_DST) ? "local" : "routed");
switch (send_case) {
}
static int
-lnet_select_pathway(lnet_nid_t src_nid, lnet_nid_t dst_nid,
- struct lnet_msg *msg, lnet_nid_t rtr_nid)
+lnet_select_pathway(struct lnet_nid *src_nid,
+ struct lnet_nid *dst_nid,
+ struct lnet_msg *msg,
+ struct lnet_nid *rtr_nid)
{
struct lnet_peer_ni *lpni;
struct lnet_peer *peer;
*/
send_data.sd_msg = msg;
send_data.sd_cpt = cpt;
- if (dst_nid == LNET_NID_LO_0) {
+ if (nid_is_lo0(dst_nid)) {
rc = lnet_handle_lo_send(&send_data);
lnet_net_unlock(cpt);
return rc;
* created due to network traffic. This call will create the
* peer->peer_net->peer_ni tree.
*/
- lpni = lnet_nid2peerni_locked(dst_nid, LNET_NID_ANY, cpt);
+ lpni = lnet_peerni_by_nid_locked(dst_nid, NULL, cpt);
if (IS_ERR(lpni)) {
lnet_net_unlock(cpt);
return PTR_ERR(lpni);
* continuing the same sequence of messages. Similarly, rtr_nid will
* affect our choice of next hop.
*/
- msg->msg_src_nid_param = src_nid;
- msg->msg_rtr_nid_param = rtr_nid;
+ if (src_nid)
+ msg->msg_src_nid_param = *src_nid;
+ else
+ msg->msg_src_nid_param = LNET_ANY_NID;
+ if (rtr_nid)
+ msg->msg_rtr_nid_param = *rtr_nid;
+ else
+ msg->msg_rtr_nid_param = LNET_ANY_NID;
/*
* If necessary, perform discovery on the peer that owns this peer_ni.
/*
* Identify the different send cases
*/
- if (src_nid == LNET_NID_ANY)
+ if (!src_nid || LNET_NID_IS_ANY(src_nid)) {
send_case |= SRC_ANY;
- else
+ if (lnet_get_net_locked(LNET_NID_NET(dst_nid)))
+ send_case |= LOCAL_DST;
+ else
+ send_case |= REMOTE_DST;
+ } else {
send_case |= SRC_SPEC;
-
- if (lnet_get_net_locked(LNET_NIDNET(dst_nid)))
- send_case |= LOCAL_DST;
- else
- send_case |= REMOTE_DST;
+ if (LNET_NID_NET(src_nid) == LNET_NID_NET(dst_nid))
+ send_case |= LOCAL_DST;
+ else
+ send_case |= REMOTE_DST;
+ }
final_hop = false;
if (msg->msg_routing && (send_case & LOCAL_DST))
struct lnet_peer *src_lp;
struct lnet_peer_ni *src_lpni;
- src_lpni = lnet_nid2peerni_locked(msg->msg_hdr.src_nid,
- LNET_NID_ANY, cpt);
+ src_lpni = lnet_peerni_by_nid_locked(&msg->msg_hdr.src_nid,
+ NULL, cpt);
/* We don't fail the send if we hit any errors here. We'll just
* try to send it via non-multi-rail criteria
*/
if (!IS_ERR(src_lpni)) {
- /* Drop ref taken by lnet_nid2peerni_locked() */
+ /* Drop ref taken by lnet_peerni_by_nid_locked() */
lnet_peer_ni_decref_locked(src_lpni);
src_lp = lpni->lpni_peer_net->lpn_peer;
if (lnet_peer_is_multi_rail(src_lp) &&
send_case |= SND_RESP;
/* assign parameters to the send_data */
- send_data.sd_rtr_nid = rtr_nid;
- send_data.sd_src_nid = src_nid;
- send_data.sd_dst_nid = dst_nid;
+ if (rtr_nid)
+ send_data.sd_rtr_nid = *rtr_nid;
+ else
+ send_data.sd_rtr_nid = LNET_ANY_NID;
+ if (src_nid)
+ send_data.sd_src_nid = *src_nid;
+ else
+ send_data.sd_src_nid = LNET_ANY_NID;
+ send_data.sd_dst_nid = *dst_nid;
send_data.sd_best_lpni = lpni;
/*
* keep a pointer to the final destination in case we're going to
}
int
-lnet_send(lnet_nid_t src_nid, struct lnet_msg *msg, lnet_nid_t rtr_nid)
+lnet_send(struct lnet_nid *src_nid, struct lnet_msg *msg,
+ struct lnet_nid *rtr_nid)
{
- lnet_nid_t dst_nid = msg->msg_target.nid;
- int rc;
+ struct lnet_nid *dst_nid = &msg->msg_target.nid;
+ int rc;
- /*
- * NB: rtr_nid is set to LNET_NID_ANY for all current use-cases,
- * but we might want to use pre-determined router for ACK/REPLY
- * in the future
- */
/* NB: ni != NULL == interface pre-determined (ACK/REPLY) */
LASSERT(msg->msg_txpeer == NULL);
LASSERT(msg->msg_txni == NULL);
struct lnet_mt_event_info {
enum lnet_mt_event_type mt_type;
- lnet_nid_t mt_nid;
+ struct lnet_nid mt_nid;
};
/* called with res_lock held */
if (ktime_compare(now, rspt->rspt_deadline) >= 0 ||
the_lnet.ln_mt_state == LNET_MT_STATE_SHUTDOWN) {
struct lnet_peer_ni *lpni;
- lnet_nid_t nid;
+ struct lnet_nid nid;
md = lnet_handle2md(&rspt->rspt_mdh);
if (!md) {
CDEBUG(D_NET,
"Response timeout: md = %p: nid = %s\n",
- md, libcfs_nid2str(nid));
+ md, libcfs_nidstr(&nid));
/*
* If there is a timeout on the response
* value so that we don't use it
*/
lnet_net_lock(0);
- lpni = lnet_find_peer_ni_locked(nid);
+ lpni = lnet_peer_ni_find_locked(&nid);
if (lpni) {
lnet_handle_remote_failure_locked(lpni);
lnet_peer_ni_decref_locked(lpni);
list_del_init(&msg->msg_list);
- lpni = lnet_find_peer_ni_locked(msg->msg_hdr.dest_nid);
+ lpni = lnet_peer_ni_find_locked(&msg->msg_hdr.dest_nid);
if (!lpni) {
lnet_net_unlock(cpt);
CERROR("Expected that a peer is already created for %s\n",
- libcfs_nid2str(msg->msg_hdr.dest_nid));
+ libcfs_nidstr(&msg->msg_hdr.dest_nid));
msg->msg_no_resend = true;
lnet_finalize(msg, -EFAULT);
lnet_net_lock(cpt);
lnet_net_unlock(cpt);
CDEBUG(D_NET, "resending %s->%s: %s recovery %d try# %d\n",
- libcfs_nid2str(msg->msg_src_nid_param),
- libcfs_id2str(msg->msg_target),
+ libcfs_nidstr(&msg->msg_src_nid_param),
+ libcfs_idstr(&msg->msg_target),
lnet_msgtyp2str(msg->msg_type),
msg->msg_recovery,
msg->msg_retry_count);
- rc = lnet_send(msg->msg_src_nid_param, msg,
- msg->msg_rtr_nid_param);
+ rc = lnet_send(&msg->msg_src_nid_param, msg,
+ &msg->msg_rtr_nid_param);
if (rc) {
CERROR("Error sending %s to %s: %d\n",
lnet_msgtyp2str(msg->msg_type),
- libcfs_id2str(msg->msg_target), rc);
+ libcfs_idstr(&msg->msg_target), rc);
msg->msg_no_resend = true;
lnet_finalize(msg, rc);
}
struct lnet_handle_md mdh;
struct lnet_ni *tmp;
struct lnet_ni *ni;
- lnet_nid_t nid;
+ struct lnet_nid nid;
int healthv;
int rc;
+ time64_t now;
/*
* splice the recovery queue on a local queue. We will iterate
&local_queue);
lnet_net_unlock(0);
+ now = ktime_get_seconds();
+
list_for_each_entry_safe(ni, tmp, &local_queue, ni_recovery) {
/*
* if an NI is being deleted or it is now healthy, there
ni->ni_recovery_state &= ~LNET_NI_RECOVERY_FAILED;
}
+
lnet_ni_unlock(ni);
- lnet_net_unlock(0);
+ if (now < ni->ni_next_ping) {
+ lnet_net_unlock(0);
+ continue;
+ }
+
+ lnet_net_unlock(0);
CDEBUG(D_NET, "attempting to recover local ni: %s\n",
- libcfs_nid2str(ni->ni_nid));
+ libcfs_nidstr(&ni->ni_nid));
lnet_ni_lock(ni);
if (!(ni->ni_recovery_state & LNET_NI_RECOVERY_PENDING)) {
LIBCFS_ALLOC(ev_info, sizeof(*ev_info));
if (!ev_info) {
CERROR("out of memory. Can't recover %s\n",
- libcfs_nid2str(ni->ni_nid));
+ libcfs_nidstr(&ni->ni_nid));
lnet_ni_lock(ni);
ni->ni_recovery_state &=
~LNET_NI_RECOVERY_PENDING;
ev_info->mt_type = MT_TYPE_LOCAL_NI;
ev_info->mt_nid = nid;
- rc = lnet_send_ping(nid, &mdh, LNET_INTERFACES_MIN,
+ rc = lnet_send_ping(&nid, &mdh, LNET_INTERFACES_MIN,
ev_info, the_lnet.ln_mt_handler,
true);
/* lookup the nid again */
lnet_net_lock(0);
- ni = lnet_nid2ni_locked(nid, 0);
+ ni = lnet_nid_to_ni_locked(&nid, 0);
if (!ni) {
/*
* the NI has been deleted when we dropped
LNetMDUnlink(mdh);
continue;
}
- /*
- * Same note as in lnet_recover_peer_nis(). When
- * we're sending the ping, the NI is free to be
- * deleted or manipulated. By this point it
- * could've been added back on the recovery queue,
- * and a refcount taken on it.
- * So we can't just add it blindly again or we'll
- * corrupt the queue. We must check under lock if
- * it's not on any list and if not then add it
- * to the processed list, which will eventually be
- * spliced back on to the recovery queue.
- */
+ ni->ni_ping_count++;
+
ni->ni_ping_mdh = mdh;
- if (list_empty(&ni->ni_recovery)) {
- list_add_tail(&ni->ni_recovery, &processed_list);
- lnet_ni_addref_locked(ni, 0);
- }
- lnet_net_unlock(0);
+ lnet_ni_add_to_recoveryq_locked(ni, &processed_list,
+ now);
- lnet_ni_lock(ni);
- if (rc)
+ if (rc) {
+ lnet_ni_lock(ni);
ni->ni_recovery_state &= ~LNET_NI_RECOVERY_PENDING;
- }
- lnet_ni_unlock(ni);
+ lnet_ni_unlock(ni);
+ }
+ lnet_net_unlock(0);
+ } else
+ lnet_ni_unlock(ni);
}
/*
/* This is only called when the monitor thread has stopped */
lnet_net_lock(0);
- while (!list_empty(&the_lnet.ln_mt_localNIRecovq)) {
- ni = list_entry(the_lnet.ln_mt_localNIRecovq.next,
- struct lnet_ni, ni_recovery);
+ while ((ni = list_first_entry_or_null(&the_lnet.ln_mt_localNIRecovq,
+ struct lnet_ni,
+ ni_recovery)) != NULL) {
list_del_init(&ni->ni_recovery);
lnet_ni_lock(ni);
lnet_unlink_ni_recovery_mdh_locked(ni, 0, true);
struct lnet_handle_md mdh;
struct lnet_peer_ni *lpni;
struct lnet_peer_ni *tmp;
- lnet_nid_t nid;
+ struct lnet_nid nid;
int healthv;
int rc;
+ time64_t now;
/*
* Always use cpt 0 for locking across all interactions with
&local_queue);
lnet_net_unlock(0);
+ now = ktime_get_seconds();
+
list_for_each_entry_safe(lpni, tmp, &local_queue,
lpni_recovery) {
/*
}
spin_unlock(&lpni->lpni_lock);
+
+ if (now < lpni->lpni_next_ping) {
+ lnet_net_unlock(0);
+ continue;
+ }
+
lnet_net_unlock(0);
/*
LIBCFS_ALLOC(ev_info, sizeof(*ev_info));
if (!ev_info) {
CERROR("out of memory. Can't recover %s\n",
- libcfs_nid2str(lpni->lpni_nid));
+ libcfs_nidstr(&lpni->lpni_nid));
spin_lock(&lpni->lpni_lock);
lpni->lpni_state &= ~LNET_PEER_NI_RECOVERY_PENDING;
spin_unlock(&lpni->lpni_lock);
/* look at the comments in lnet_recover_local_nis() */
mdh = lpni->lpni_recovery_ping_mdh;
- LNetInvalidateMDHandle(&lpni->lpni_recovery_ping_mdh);
nid = lpni->lpni_nid;
+ LNetInvalidateMDHandle(&lpni->lpni_recovery_ping_mdh);
lnet_net_lock(0);
list_del_init(&lpni->lpni_recovery);
lnet_peer_ni_decref_locked(lpni);
ev_info->mt_type = MT_TYPE_PEER_NI;
ev_info->mt_nid = nid;
- rc = lnet_send_ping(nid, &mdh, LNET_INTERFACES_MIN,
+ rc = lnet_send_ping(&nid, &mdh, LNET_INTERFACES_MIN,
ev_info, the_lnet.ln_mt_handler,
true);
lnet_net_lock(0);
/*
- * lnet_find_peer_ni_locked() grabs a refcount for
+ * lnet_peer_ni_find_locked() grabs a refcount for
* us. No need to take it explicitly.
*/
- lpni = lnet_find_peer_ni_locked(nid);
+ lpni = lnet_peer_ni_find_locked(&nid);
if (!lpni) {
lnet_net_unlock(0);
LNetMDUnlink(mdh);
continue;
}
+ lpni->lpni_ping_count++;
+
lpni->lpni_recovery_ping_mdh = mdh;
- /*
- * While we're unlocked the lpni could've been
- * readded on the recovery queue. In this case we
- * don't need to add it to the local queue, since
- * it's already on there and the thread that added
- * it would've incremented the refcount on the
- * peer, which means we need to decref the refcount
- * that was implicitly grabbed by find_peer_ni_locked.
- * Otherwise, if the lpni is still not on
- * the recovery queue, then we'll add it to the
- * processed list.
- */
- if (list_empty(&lpni->lpni_recovery))
- list_add_tail(&lpni->lpni_recovery, &processed_list);
- else
- lnet_peer_ni_decref_locked(lpni);
- lnet_net_unlock(0);
- spin_lock(&lpni->lpni_lock);
- if (rc)
+ lnet_peer_ni_add_to_recoveryq_locked(lpni,
+ &processed_list,
+ now);
+ if (rc) {
+ spin_lock(&lpni->lpni_lock);
lpni->lpni_state &= ~LNET_PEER_NI_RECOVERY_PENDING;
- }
- spin_unlock(&lpni->lpni_lock);
+ spin_unlock(&lpni->lpni_lock);
+ }
+
+ /* Drop the ref taken by lnet_peer_ni_find_locked() */
+ lnet_peer_ni_decref_locked(lpni);
+ lnet_net_unlock(0);
+ } else
+ spin_unlock(&lpni->lpni_lock);
}
list_splice_init(&processed_list, &local_queue);
static int
lnet_monitor_thread(void *arg)
{
- time64_t recovery_timeout = 0;
time64_t rsp_timeout = 0;
- int interval;
time64_t now;
wait_for_completion(&the_lnet.ln_started);
rsp_timeout = now + (lnet_transaction_timeout / 2);
}
- if (now >= recovery_timeout) {
- lnet_recover_local_nis();
- lnet_recover_peer_nis();
- recovery_timeout = now + lnet_recovery_interval;
- }
+ lnet_recover_local_nis();
+ lnet_recover_peer_nis();
/*
* TODO do we need to check if we should sleep without
* if we wake up every 1 second? Although, we've seen
* cases where we get a complaint that an idle thread
* is waking up unnecessarily.
- *
- * Take into account the current net_count when you wake
- * up for alive router checking, since we need to check
- * possibly as many networks as we have configured.
*/
- interval = min(lnet_recovery_interval,
- min((unsigned int) alive_router_check_interval /
- lnet_current_net_count,
- lnet_transaction_timeout / 2));
wait_for_completion_interruptible_timeout(
&the_lnet.ln_mt_wait_complete,
- cfs_time_seconds(interval));
+ cfs_time_seconds(1));
/* Must re-init the completion before testing anything,
* including ln_mt_state.
*/
* Returns < 0 if LNetGet fails
*/
int
-lnet_send_ping(lnet_nid_t dest_nid,
+lnet_send_ping(struct lnet_nid *dest_nid,
struct lnet_handle_md *mdh, int nnis,
void *user_data, lnet_handler_t handler, bool recovery)
{
struct lnet_md md = { NULL };
- struct lnet_process_id id;
+ struct lnet_processid id;
struct lnet_ping_buffer *pbuf;
int rc;
- if (dest_nid == LNET_NID_ANY) {
+ if (LNET_NID_IS_ANY(dest_nid)) {
rc = -EHOSTUNREACH;
goto fail_error;
}
goto fail_error;
}
id.pid = LNET_PID_LUSTRE;
- id.nid = dest_nid;
+ id.nid = *dest_nid;
- rc = LNetGet(LNET_NID_ANY, *mdh, id,
+ rc = LNetGet(NULL, *mdh, &id,
LNET_RESERVED_PORTAL,
LNET_PROTO_PING_MATCHBITS, 0, recovery);
lnet_handle_recovery_reply(struct lnet_mt_event_info *ev_info,
int status, bool send, bool unlink_event)
{
- lnet_nid_t nid = ev_info->mt_nid;
+ struct lnet_nid *nid = &ev_info->mt_nid;
if (ev_info->mt_type == MT_TYPE_LOCAL_NI) {
struct lnet_ni *ni;
lnet_net_lock(0);
- ni = lnet_nid2ni_locked(nid, 0);
+ ni = lnet_nid_to_ni_locked(nid, 0);
if (!ni) {
lnet_net_unlock(0);
return;
if (status != 0) {
CERROR("local NI (%s) recovery failed with %d\n",
- libcfs_nid2str(nid), status);
+ libcfs_nidstr(nid), status);
return;
}
/*
int cpt;
cpt = lnet_net_lock_current();
- lpni = lnet_find_peer_ni_locked(nid);
+ lpni = lnet_peer_ni_find_locked(nid);
if (!lpni) {
lnet_net_unlock(cpt);
return;
if (status != 0)
CERROR("peer NI (%s) recovery failed with %d\n",
- libcfs_nid2str(nid), status);
+ libcfs_nidstr(nid), status);
}
}
switch (event->type) {
case LNET_EVENT_UNLINK:
CDEBUG(D_NET, "%s recovery ping unlinked\n",
- libcfs_nid2str(ev_info->mt_nid));
- /* fallthrough */
+ libcfs_nidstr(&ev_info->mt_nid));
+ fallthrough;
case LNET_EVENT_REPLY:
lnet_handle_recovery_reply(ev_info, event->status, false,
event->type == LNET_EVENT_UNLINK);
break;
case LNET_EVENT_SEND:
CDEBUG(D_NET, "%s recovery message sent %s:%d\n",
- libcfs_nid2str(ev_info->mt_nid),
+ libcfs_nidstr(&ev_info->mt_nid),
(event->status) ? "unsuccessfully" :
"successfully", event->status);
lnet_handle_recovery_reply(ev_info, event->status, true, false);
complete(&the_lnet.ln_mt_wait_complete);
/* block until monitor thread signals that it's done */
+ mutex_unlock(&the_lnet.ln_api_mutex);
down(&the_lnet.ln_mt_signal);
+ mutex_lock(&the_lnet.ln_api_mutex);
LASSERT(the_lnet.ln_mt_state == LNET_MT_STATE_SHUTDOWN);
/* perform cleanup tasks */
hdr->msg.put.offset = le32_to_cpu(hdr->msg.put.offset);
/* Primary peer NID. */
- info.mi_id.nid = msg->msg_initiator;
+ info.mi_id.nid = msg->msg_initiator;
info.mi_id.pid = hdr->src_pid;
info.mi_opc = LNET_MD_OP_PUT;
info.mi_portal = hdr->msg.put.ptl_index;
info.mi_rlength = hdr->payload_length;
info.mi_roffset = hdr->msg.put.offset;
info.mi_mbits = hdr->msg.put.match_bits;
- info.mi_cpt = lnet_cpt_of_nid(msg->msg_initiator, ni);
+ info.mi_cpt = lnet_nid2cpt(&msg->msg_initiator, ni);
msg->msg_rx_ready_delay = ni->ni_net->net_lnd->lnd_eager_recv == NULL;
ready_delay = msg->msg_rx_ready_delay;
ready_delay = true;
goto again;
}
- /* fall through */
+ fallthrough;
case LNET_MATCHMD_DROP:
CNETERR("Dropping PUT from %s portal %d match %llu"
" offset %d length %d: %d\n",
- libcfs_id2str(info.mi_id), info.mi_portal,
+ libcfs_idstr(&info.mi_id), info.mi_portal,
info.mi_mbits, info.mi_roffset, info.mi_rlength, rc);
return -ENOENT; /* -ve: OK but no match */
{
struct lnet_match_info info;
struct lnet_hdr *hdr = &msg->msg_hdr;
- struct lnet_process_id source_id;
+ struct lnet_processid source_id;
struct lnet_handle_wire reply_wmd;
int rc;
source_id.nid = hdr->src_nid;
source_id.pid = hdr->src_pid;
/* Primary peer NID */
- info.mi_id.nid = msg->msg_initiator;
+ info.mi_id.nid = msg->msg_initiator;
info.mi_id.pid = hdr->src_pid;
info.mi_opc = LNET_MD_OP_GET;
info.mi_portal = hdr->msg.get.ptl_index;
info.mi_rlength = hdr->msg.get.sink_length;
info.mi_roffset = hdr->msg.get.src_offset;
info.mi_mbits = hdr->msg.get.match_bits;
- info.mi_cpt = lnet_cpt_of_nid(msg->msg_initiator, ni);
+ info.mi_cpt = lnet_nid2cpt(&msg->msg_initiator, ni);
rc = lnet_ptl_match_md(&info, msg);
if (rc == LNET_MATCHMD_DROP) {
CNETERR("Dropping GET from %s portal %d match %llu"
" offset %d length %d\n",
- libcfs_id2str(info.mi_id), info.mi_portal,
+ libcfs_idstr(&info.mi_id), info.mi_portal,
info.mi_mbits, info.mi_roffset, info.mi_rlength);
return -ENOENT; /* -ve: OK but no match */
}
reply_wmd = hdr->msg.get.return_wmd;
- lnet_prep_send(msg, LNET_MSG_REPLY, source_id,
+ lnet_prep_send(msg, LNET_MSG_REPLY, &source_id,
msg->msg_offset, msg->msg_wanted);
msg->msg_hdr.msg.reply.dst_wmd = reply_wmd;
lnet_ni_recv(ni, msg->msg_private, NULL, 0, 0, 0, 0);
msg->msg_receiving = 0;
- rc = lnet_send(ni->ni_nid, msg, msg->msg_from);
+ rc = lnet_send(&ni->ni_nid, msg, &msg->msg_from);
if (rc < 0) {
/* didn't get as far as lnet_ni_send() */
CERROR("%s: Unable to send REPLY for GET from %s: %d\n",
- libcfs_nid2str(ni->ni_nid),
- libcfs_id2str(info.mi_id), rc);
+ libcfs_nidstr(&ni->ni_nid),
+ libcfs_idstr(&info.mi_id), rc);
lnet_finalize(msg, rc);
}
{
void *private = msg->msg_private;
struct lnet_hdr *hdr = &msg->msg_hdr;
- struct lnet_process_id src = {0};
+ struct lnet_processid src = {};
struct lnet_libmd *md;
unsigned int rlength;
unsigned int mlength;
if (md == NULL || md->md_threshold == 0 || md->md_me != NULL) {
CNETERR("%s: Dropping REPLY from %s for %s "
"MD %#llx.%#llx\n",
- libcfs_nid2str(ni->ni_nid), libcfs_id2str(src),
+ libcfs_nidstr(&ni->ni_nid), libcfs_idstr(&src),
(md == NULL) ? "invalid" : "inactive",
hdr->msg.reply.dst_wmd.wh_interface_cookie,
hdr->msg.reply.dst_wmd.wh_object_cookie);
(md->md_options & LNET_MD_TRUNCATE) == 0) {
CNETERR("%s: Dropping REPLY from %s length %d "
"for MD %#llx would overflow (%d)\n",
- libcfs_nid2str(ni->ni_nid), libcfs_id2str(src),
+ libcfs_nidstr(&ni->ni_nid), libcfs_idstr(&src),
rlength, hdr->msg.reply.dst_wmd.wh_object_cookie,
mlength);
lnet_res_unlock(cpt);
}
CDEBUG(D_NET, "%s: Reply from %s of length %d/%d into md %#llx\n",
- libcfs_nid2str(ni->ni_nid), libcfs_id2str(src),
+ libcfs_nidstr(&ni->ni_nid), libcfs_idstr(&src),
mlength, rlength, hdr->msg.reply.dst_wmd.wh_object_cookie);
lnet_msg_attach_md(msg, md, 0, mlength);
lnet_parse_ack(struct lnet_ni *ni, struct lnet_msg *msg)
{
struct lnet_hdr *hdr = &msg->msg_hdr;
- struct lnet_process_id src = {0};
+ struct lnet_processid src = {};
struct lnet_libmd *md;
int cpt;
/* Don't moan; this is expected */
CDEBUG(D_NET,
"%s: Dropping ACK from %s to %s MD %#llx.%#llx\n",
- libcfs_nid2str(ni->ni_nid), libcfs_id2str(src),
+ libcfs_nidstr(&ni->ni_nid), libcfs_idstr(&src),
(md == NULL) ? "invalid" : "inactive",
hdr->msg.ack.dst_wmd.wh_interface_cookie,
hdr->msg.ack.dst_wmd.wh_object_cookie);
}
CDEBUG(D_NET, "%s: ACK from %s into md %#llx\n",
- libcfs_nid2str(ni->ni_nid), libcfs_id2str(src),
+ libcfs_nidstr(&ni->ni_nid), libcfs_idstr(&src),
hdr->msg.ack.dst_wmd.wh_object_cookie);
lnet_msg_attach_md(msg, md, 0, 0);
return ("<UNKNOWN>");
}
}
+EXPORT_SYMBOL(lnet_msgtyp2str);
int
-lnet_parse(struct lnet_ni *ni, struct lnet_hdr *hdr, lnet_nid_t from_nid,
- void *private, int rdma_req)
+lnet_parse(struct lnet_ni *ni, struct lnet_hdr *hdr,
+ struct lnet_nid *from_nid, void *private, int rdma_req)
{
struct lnet_peer_ni *lpni;
struct lnet_msg *msg;
__u32 payload_length;
lnet_pid_t dest_pid;
- lnet_nid_t dest_nid;
- lnet_nid_t src_nid;
+ struct lnet_nid dest_nid;
+ struct lnet_nid src_nid;
bool push = false;
int for_me;
__u32 type;
int rc = 0;
int cpt;
+ time64_t now = ktime_get_seconds();
LASSERT (!in_interrupt ());
- type = le32_to_cpu(hdr->type);
- src_nid = le64_to_cpu(hdr->src_nid);
- dest_nid = le64_to_cpu(hdr->dest_nid);
- dest_pid = le32_to_cpu(hdr->dest_pid);
- payload_length = le32_to_cpu(hdr->payload_length);
+ type = hdr->type;
+ src_nid = hdr->src_nid;
+ dest_nid = hdr->dest_nid;
+ dest_pid = hdr->dest_pid;
+ payload_length = hdr->payload_length;
- for_me = (ni->ni_nid == dest_nid);
- cpt = lnet_cpt_of_nid(from_nid, ni);
+ for_me = nid_same(&ni->ni_nid, &dest_nid);
+ cpt = lnet_nid2cpt(from_nid, ni);
CDEBUG(D_NET, "TRACE: %s(%s) <- %s : %s - %s\n",
- libcfs_nid2str(dest_nid),
- libcfs_nid2str(ni->ni_nid),
- libcfs_nid2str(src_nid),
+ libcfs_nidstr(&dest_nid),
+ libcfs_nidstr(&ni->ni_nid),
+ libcfs_nidstr(&src_nid),
lnet_msgtyp2str(type),
(for_me) ? "for me" : "routed");
case LNET_MSG_GET:
if (payload_length > 0) {
CERROR("%s, src %s: bad %s payload %d (0 expected)\n",
- libcfs_nid2str(from_nid),
- libcfs_nid2str(src_nid),
+ libcfs_nidstr(from_nid),
+ libcfs_nidstr(&src_nid),
lnet_msgtyp2str(type), payload_length);
return -EPROTO;
}
(__u32)(for_me ? LNET_MAX_PAYLOAD : LNET_MTU)) {
CERROR("%s, src %s: bad %s payload %d "
"(%d max expected)\n",
- libcfs_nid2str(from_nid),
- libcfs_nid2str(src_nid),
+ libcfs_nidstr(from_nid),
+ libcfs_nidstr(&src_nid),
lnet_msgtyp2str(type),
payload_length,
for_me ? LNET_MAX_PAYLOAD : LNET_MTU);
default:
CERROR("%s, src %s: Bad message type 0x%x\n",
- libcfs_nid2str(from_nid),
- libcfs_nid2str(src_nid), type);
+ libcfs_nidstr(from_nid),
+ libcfs_nidstr(&src_nid), type);
return -EPROTO;
}
- if (the_lnet.ln_routing &&
- ni->ni_net->net_last_alive != ktime_get_real_seconds()) {
+ /* Only update net_last_alive for incoming GETs on the reserved portal
+ * (i.e. incoming lnet/discovery pings).
+ * This avoids situations where the router's own traffic results in NI
+ * status changes
+ */
+ if (the_lnet.ln_routing && type == LNET_MSG_GET &&
+ hdr->msg.get.ptl_index == LNET_RESERVED_PORTAL &&
+ !lnet_islocalnid(&src_nid) &&
+ ni->ni_net->net_last_alive != now) {
lnet_ni_lock(ni);
spin_lock(&ni->ni_net->net_lock);
- ni->ni_net->net_last_alive = ktime_get_real_seconds();
+ ni->ni_net->net_last_alive = now;
spin_unlock(&ni->ni_net->net_lock);
push = lnet_ni_set_status_locked(ni, LNET_NI_STATUS_UP);
lnet_ni_unlock(ni);
* or malicious so we chop them off at the knees :) */
if (!for_me) {
- if (LNET_NIDNET(dest_nid) == LNET_NIDNET(ni->ni_nid)) {
+ if (LNET_NID_NET(&dest_nid) == LNET_NID_NET(&ni->ni_nid)) {
/* should have gone direct */
CERROR("%s, src %s: Bad dest nid %s "
"(should have been sent direct)\n",
- libcfs_nid2str(from_nid),
- libcfs_nid2str(src_nid),
- libcfs_nid2str(dest_nid));
+ libcfs_nidstr(from_nid),
+ libcfs_nidstr(&src_nid),
+ libcfs_nidstr(&dest_nid));
return -EPROTO;
}
- if (lnet_islocalnid(dest_nid)) {
+ if (lnet_islocalnid(&dest_nid)) {
/* dest is another local NI; sender should have used
* this node's NID on its own network */
CERROR("%s, src %s: Bad dest nid %s "
"(it's my nid but on a different network)\n",
- libcfs_nid2str(from_nid),
- libcfs_nid2str(src_nid),
- libcfs_nid2str(dest_nid));
+ libcfs_nidstr(from_nid),
+ libcfs_nidstr(&src_nid),
+ libcfs_nidstr(&dest_nid));
return -EPROTO;
}
if (rdma_req && type == LNET_MSG_GET) {
CERROR("%s, src %s: Bad optimized GET for %s "
"(final destination must be me)\n",
- libcfs_nid2str(from_nid),
- libcfs_nid2str(src_nid),
- libcfs_nid2str(dest_nid));
+ libcfs_nidstr(from_nid),
+ libcfs_nidstr(&src_nid),
+ libcfs_nidstr(&dest_nid));
return -EPROTO;
}
if (!the_lnet.ln_routing) {
CERROR("%s, src %s: Dropping message for %s "
"(routing not enabled)\n",
- libcfs_nid2str(from_nid),
- libcfs_nid2str(src_nid),
- libcfs_nid2str(dest_nid));
+ libcfs_nidstr(from_nid),
+ libcfs_nidstr(&src_nid),
+ libcfs_nidstr(&dest_nid));
goto drop;
}
}
* call back lnd_recv() come what may... */
if (!list_empty(&the_lnet.ln_test_peers) && /* normally we don't */
- fail_peer(src_nid, 0)) { /* shall we now? */
+ fail_peer(&src_nid, 0)) { /* shall we now? */
CERROR("%s, src %s: Dropping %s to simulate failure\n",
- libcfs_nid2str(from_nid), libcfs_nid2str(src_nid),
+ libcfs_nidstr(from_nid), libcfs_nidstr(&src_nid),
lnet_msgtyp2str(type));
goto drop;
}
if (!list_empty(&the_lnet.ln_drop_rules) &&
- lnet_drop_rule_match(hdr, ni->ni_nid, NULL)) {
+ lnet_drop_rule_match(hdr, &ni->ni_nid, NULL)) {
CDEBUG(D_NET,
"%s, src %s, dst %s: Dropping %s to simulate silent message loss\n",
- libcfs_nid2str(from_nid), libcfs_nid2str(src_nid),
- libcfs_nid2str(dest_nid), lnet_msgtyp2str(type));
+ libcfs_nidstr(from_nid), libcfs_nidstr(&src_nid),
+ libcfs_nidstr(&dest_nid), lnet_msgtyp2str(type));
goto drop;
}
- if (lnet_drop_asym_route && for_me &&
- LNET_NIDNET(src_nid) != LNET_NIDNET(from_nid)) {
- struct lnet_net *net;
- struct lnet_remotenet *rnet;
- bool found = true;
-
- /* we are dealing with a routed message,
- * so see if route to reach src_nid goes through from_nid
- */
- lnet_net_lock(cpt);
- net = lnet_get_net_locked(LNET_NIDNET(ni->ni_nid));
- if (!net) {
- lnet_net_unlock(cpt);
- CERROR("net %s not found\n",
- libcfs_net2str(LNET_NIDNET(ni->ni_nid)));
- return -EPROTO;
- }
-
- rnet = lnet_find_rnet_locked(LNET_NIDNET(src_nid));
- if (rnet) {
- struct lnet_peer *gw = NULL;
- struct lnet_peer_ni *lpni = NULL;
- struct lnet_route *route;
-
- list_for_each_entry(route, &rnet->lrn_routes, lr_list) {
- found = false;
- gw = route->lr_gateway;
- if (route->lr_lnet != net->net_id)
- continue;
- /*
- * if the nid is one of the gateway's NIDs
- * then this is a valid gateway
- */
- while ((lpni = lnet_get_next_peer_ni_locked(gw,
- NULL, lpni)) != NULL) {
- if (lpni->lpni_nid == from_nid) {
- found = true;
- break;
- }
- }
- }
- }
- lnet_net_unlock(cpt);
- if (!found) {
- /* we would not use from_nid to route a message to
- * src_nid
- * => asymmetric routing detected but forbidden
- */
- CERROR("%s, src %s: Dropping asymmetrical route %s\n",
- libcfs_nid2str(from_nid),
- libcfs_nid2str(src_nid), lnet_msgtyp2str(type));
- goto drop;
- }
- }
-
msg = lnet_msg_alloc();
if (msg == NULL) {
CERROR("%s, src %s: Dropping %s (out of memory)\n",
- libcfs_nid2str(from_nid), libcfs_nid2str(src_nid),
+ libcfs_nidstr(from_nid), libcfs_nidstr(&src_nid),
lnet_msgtyp2str(type));
goto drop;
}
msg->msg_offset = 0;
msg->msg_hdr = *hdr;
/* for building message event */
- msg->msg_from = from_nid;
+ msg->msg_from = *from_nid;
if (!for_me) {
- msg->msg_target.pid = dest_pid;
- msg->msg_target.nid = dest_nid;
- msg->msg_routing = 1;
-
- } else {
- /* convert common msg->hdr fields to host byteorder */
- msg->msg_hdr.type = type;
- msg->msg_hdr.src_nid = src_nid;
- msg->msg_hdr.src_pid = le32_to_cpu(msg->msg_hdr.src_pid);
- msg->msg_hdr.dest_nid = dest_nid;
- msg->msg_hdr.dest_pid = dest_pid;
- msg->msg_hdr.payload_length = payload_length;
+ msg->msg_target.pid = dest_pid;
+ msg->msg_target.nid = dest_nid;
+ msg->msg_routing = 1;
}
lnet_net_lock(cpt);
- lpni = lnet_nid2peerni_locked(from_nid, ni->ni_nid, cpt);
+ lpni = lnet_peerni_by_nid_locked(from_nid, &ni->ni_nid, cpt);
if (IS_ERR(lpni)) {
lnet_net_unlock(cpt);
- CERROR("%s, src %s: Dropping %s "
- "(error %ld looking up sender)\n",
- libcfs_nid2str(from_nid), libcfs_nid2str(src_nid),
- lnet_msgtyp2str(type), PTR_ERR(lpni));
+ rc = PTR_ERR(lpni);
+ CERROR("%s, src %s: Dropping %s (error %d looking up sender)\n",
+ libcfs_nidstr(from_nid), libcfs_nidstr(&src_nid),
+ lnet_msgtyp2str(type), rc);
lnet_msg_free(msg);
if (rc == -ESHUTDOWN)
/* We are shutting down. Don't do anything more */
- return 0;
+ return rc;
goto drop;
}
- if (the_lnet.ln_routing)
- lpni->lpni_last_alive = ktime_get_seconds();
+ /* If this message was forwarded to us from a router then we may need
+ * to update router aliveness or check for an asymmetrical route
+ * (or both)
+ */
+ if (((lnet_drop_asym_route && for_me) ||
+ !lpni->lpni_peer_net->lpn_peer->lp_alive) &&
+ LNET_NID_NET(&src_nid) != LNET_NID_NET(from_nid)) {
+ __u32 src_net_id = LNET_NID_NET(&src_nid);
+ struct lnet_peer *gw = lpni->lpni_peer_net->lpn_peer;
+ struct lnet_route *route;
+ bool found = false;
+
+ list_for_each_entry(route, &gw->lp_routes, lr_gwlist) {
+ if (route->lr_net == src_net_id) {
+ found = true;
+ /* If we're transitioning the gateway from
+ * dead -> alive, and discovery is disabled
+ * locally or on the gateway, then we need to
+ * update the cached route aliveness for each
+ * route to the src_nid's net.
+ *
+ * Otherwise, we're only checking for
+ * symmetrical route, and we can break the
+ * loop
+ */
+ if (!gw->lp_alive &&
+ lnet_is_discovery_disabled(gw))
+ lnet_set_route_aliveness(route, true);
+ else
+ break;
+ }
+ }
+ if (lnet_drop_asym_route && for_me && !found) {
+ /* Drop ref taken by lnet_nid2peerni_locked() */
+ lnet_peer_ni_decref_locked(lpni);
+ lnet_net_unlock(cpt);
+ /* we would not use from_nid to route a message to
+ * src_nid
+ * => asymmetric routing detected but forbidden
+ */
+ CERROR("%s, src %s: Dropping asymmetrical route %s\n",
+ libcfs_nidstr(from_nid),
+ libcfs_nidstr(&src_nid), lnet_msgtyp2str(type));
+ lnet_msg_free(msg);
+ goto drop;
+ }
+ if (!gw->lp_alive) {
+ struct lnet_peer_net *lpn;
+ struct lnet_peer_ni *lpni2;
+
+ gw->lp_alive = true;
+ /* Mark all remote NIs on src_nid's net UP */
+ lpn = lnet_peer_get_net_locked(gw, src_net_id);
+ if (lpn)
+ list_for_each_entry(lpni2, &lpn->lpn_peer_nis,
+ lpni_peer_nis)
+ lpni2->lpni_ns_status = LNET_NI_STATUS_UP;
+ }
+ }
+
+ lpni->lpni_last_alive = now;
msg->msg_rxpeer = lpni;
msg->msg_rxni = ni;
lnet_ni_addref_locked(ni, cpt);
/* Multi-Rail: Primary NID of source. */
- msg->msg_initiator = lnet_peer_primary_nid_locked(src_nid);
+ lnet_peer_primary_nid_locked(&src_nid, &msg->msg_initiator);
/*
* mark the status of this lpni as UP since we received a message
void
lnet_drop_delayed_msg_list(struct list_head *head, char *reason)
{
- while (!list_empty(head)) {
- struct lnet_process_id id = {0};
- struct lnet_msg *msg;
+ struct lnet_msg *msg;
+
+ while ((msg = list_first_entry_or_null(head, struct lnet_msg,
+ msg_list)) != NULL) {
+ struct lnet_processid id = {};
- msg = list_entry(head->next, struct lnet_msg, msg_list);
list_del(&msg->msg_list);
id.nid = msg->msg_hdr.src_nid;
CWARN("Dropping delayed PUT from %s portal %d match %llu"
" offset %d length %d: %s\n",
- libcfs_id2str(id),
+ libcfs_idstr(&id),
msg->msg_hdr.msg.put.ptl_index,
msg->msg_hdr.msg.put.match_bits,
msg->msg_hdr.msg.put.offset,
void
lnet_recv_delayed_msg_list(struct list_head *head)
{
- while (!list_empty(head)) {
- struct lnet_msg *msg;
- struct lnet_process_id id;
+ struct lnet_msg *msg;
+
+ while ((msg = list_first_entry_or_null(head, struct lnet_msg,
+ msg_list)) != NULL) {
+ struct lnet_processid id;
- msg = list_entry(head->next, struct lnet_msg, msg_list);
list_del(&msg->msg_list);
/* md won't disappear under me, since each msg
CDEBUG(D_NET, "Resuming delayed PUT from %s portal %d "
"match %llu offset %d length %d.\n",
- libcfs_id2str(id), msg->msg_hdr.msg.put.ptl_index,
+ libcfs_idstr(&id), msg->msg_hdr.msg.put.ptl_index,
msg->msg_hdr.msg.put.match_bits,
msg->msg_hdr.msg.put.offset,
msg->msg_hdr.payload_length);
* \see struct lnet_event::hdr_data and lnet_event_kind_t.
*/
int
-LNetPut(lnet_nid_t self, struct lnet_handle_md mdh, enum lnet_ack_req ack,
- struct lnet_process_id target, unsigned int portal,
+LNetPut(struct lnet_nid *self, struct lnet_handle_md mdh, enum lnet_ack_req ack,
+ struct lnet_processid *target, unsigned int portal,
__u64 match_bits, unsigned int offset,
__u64 hdr_data)
{
LASSERT(the_lnet.ln_refcount > 0);
if (!list_empty(&the_lnet.ln_test_peers) && /* normally we don't */
- fail_peer(target.nid, 1)) { /* shall we now? */
+ fail_peer(&target->nid, 1)) { /* shall we now? */
CERROR("Dropping PUT to %s: simulated failure\n",
- libcfs_id2str(target));
+ libcfs_idstr(target));
return -EIO;
}
msg = lnet_msg_alloc();
if (msg == NULL) {
CERROR("Dropping PUT to %s: ENOMEM on struct lnet_msg\n",
- libcfs_id2str(target));
+ libcfs_idstr(target));
return -ENOMEM;
}
msg->msg_vmflush = !!(current->flags & PF_MEMALLOC);
rspt = lnet_rspt_alloc(cpt);
if (!rspt) {
CERROR("Dropping PUT to %s: ENOMEM on response tracker\n",
- libcfs_id2str(target));
+ libcfs_idstr(target));
return -ENOMEM;
}
INIT_LIST_HEAD(&rspt->rspt_on_list);
md = lnet_handle2md(&mdh);
if (md == NULL || md->md_threshold == 0 || md->md_me != NULL) {
CERROR("Dropping PUT (%llu:%d:%s): MD (%d) invalid\n",
- match_bits, portal, libcfs_id2str(target),
+ match_bits, portal, libcfs_idstr(target),
md == NULL ? -1 : md->md_threshold);
if (md != NULL && md->md_me != NULL)
CERROR("Source MD also attached to portal %d\n",
return -ENOENT;
}
- CDEBUG(D_NET, "LNetPut -> %s\n", libcfs_id2str(target));
+ CDEBUG(D_NET, "%s -> %s\n", __func__, libcfs_idstr(target));
lnet_msg_attach_md(msg, md, 0, 0);
CFS_FAIL_ONCE))
rc = -EIO;
else
- rc = lnet_send(self, msg, LNET_NID_ANY);
+ rc = lnet_send(self, msg, NULL);
if (rc != 0) {
CNETERR("Error sending PUT to %s: %d\n",
- libcfs_id2str(target), rc);
+ libcfs_idstr(target), rc);
msg->msg_no_resend = true;
lnet_finalize(msg, rc);
}
{
struct lnet_msg *msg = lnet_msg_alloc();
struct lnet_libmd *getmd = getmsg->msg_md;
- struct lnet_process_id peer_id = getmsg->msg_target;
+ struct lnet_processid *peer_id = &getmsg->msg_target;
int cpt;
LASSERT(!getmsg->msg_target_is_router);
if (msg == NULL) {
CERROR("%s: Dropping REPLY from %s: can't allocate msg\n",
- libcfs_nid2str(ni->ni_nid), libcfs_id2str(peer_id));
+ libcfs_nidstr(&ni->ni_nid), libcfs_idstr(peer_id));
goto drop;
}
if (getmd->md_threshold == 0) {
CERROR("%s: Dropping REPLY from %s for inactive MD %p\n",
- libcfs_nid2str(ni->ni_nid), libcfs_id2str(peer_id),
+ libcfs_nidstr(&ni->ni_nid), libcfs_idstr(peer_id),
getmd);
lnet_res_unlock(cpt);
goto drop;
LASSERT(getmd->md_offset == 0);
CDEBUG(D_NET, "%s: Reply from %s md %p\n",
- libcfs_nid2str(ni->ni_nid), libcfs_id2str(peer_id), getmd);
+ libcfs_nidstr(&ni->ni_nid), libcfs_idstr(peer_id), getmd);
/* setup information for lnet_build_msg_event */
- msg->msg_initiator = getmsg->msg_txpeer->lpni_peer_net->lpn_peer->lp_primary_nid;
- msg->msg_from = peer_id.nid;
+ msg->msg_initiator =
+ getmsg->msg_txpeer->lpni_peer_net->lpn_peer->lp_primary_nid;
+ msg->msg_from = peer_id->nid;
msg->msg_type = LNET_MSG_GET; /* flag this msg as an "optimized" GET */
- msg->msg_hdr.src_nid = peer_id.nid;
+ msg->msg_hdr.src_nid = peer_id->nid;
msg->msg_hdr.payload_length = getmd->md_length;
msg->msg_receiving = 1; /* required by lnet_msg_attach_md */
lnet_msg_attach_md(msg, getmd, getmd->md_offset, getmd->md_length);
lnet_res_unlock(cpt);
- cpt = lnet_cpt_of_nid(peer_id.nid, ni);
+ cpt = lnet_nid2cpt(&peer_id->nid, ni);
lnet_net_lock(cpt);
lnet_msg_commit(msg, cpt);
return msg;
drop:
- cpt = lnet_cpt_of_nid(peer_id.nid, ni);
+ cpt = lnet_nid2cpt(&peer_id->nid, ni);
lnet_net_lock(cpt);
lnet_incr_stats(&ni->ni_stats, LNET_MSG_GET, LNET_STATS_TYPE_DROP);
* \retval -ENOENT Invalid MD object.
*/
int
-LNetGet(lnet_nid_t self, struct lnet_handle_md mdh,
- struct lnet_process_id target, unsigned int portal,
+LNetGet(struct lnet_nid *self, struct lnet_handle_md mdh,
+ struct lnet_processid *target, unsigned int portal,
__u64 match_bits, unsigned int offset, bool recovery)
{
struct lnet_msg *msg;
LASSERT(the_lnet.ln_refcount > 0);
if (!list_empty(&the_lnet.ln_test_peers) && /* normally we don't */
- fail_peer(target.nid, 1)) /* shall we now? */
+ fail_peer(&target->nid, 1)) /* shall we now? */
{
CERROR("Dropping GET to %s: simulated failure\n",
- libcfs_id2str(target));
+ libcfs_idstr(target));
return -EIO;
}
msg = lnet_msg_alloc();
if (!msg) {
CERROR("Dropping GET to %s: ENOMEM on struct lnet_msg\n",
- libcfs_id2str(target));
+ libcfs_idstr(target));
return -ENOMEM;
}
rspt = lnet_rspt_alloc(cpt);
if (!rspt) {
CERROR("Dropping GET to %s: ENOMEM on response tracker\n",
- libcfs_id2str(target));
+ libcfs_idstr(target));
return -ENOMEM;
}
INIT_LIST_HEAD(&rspt->rspt_on_list);
md = lnet_handle2md(&mdh);
if (md == NULL || md->md_threshold == 0 || md->md_me != NULL) {
CERROR("Dropping GET (%llu:%d:%s): MD (%d) invalid\n",
- match_bits, portal, libcfs_id2str(target),
+ match_bits, portal, libcfs_idstr(target),
md == NULL ? -1 : md->md_threshold);
if (md != NULL && md->md_me != NULL)
CERROR("REPLY MD also attached to portal %d\n",
return -ENOENT;
}
- CDEBUG(D_NET, "LNetGet -> %s\n", libcfs_id2str(target));
+ CDEBUG(D_NET, "%s -> %s\n", __func__, libcfs_idstr(target));
lnet_msg_attach_md(msg, md, 0, 0);
else
lnet_rspt_free(rspt, cpt);
- rc = lnet_send(self, msg, LNET_NID_ANY);
+ rc = lnet_send(self, msg, NULL);
if (rc < 0) {
CNETERR("Error sending GET to %s: %d\n",
- libcfs_id2str(target), rc);
+ libcfs_idstr(target), rc);
msg->msg_no_resend = true;
lnet_finalize(msg, rc);
}
* \retval -EHOSTUNREACH If \a dstnid is not reachable.
*/
int
-LNetDist(lnet_nid_t dstnid, lnet_nid_t *srcnidp, __u32 *orderp)
+LNetDist(struct lnet_nid *dstnid, struct lnet_nid *srcnid, __u32 *orderp)
{
- struct list_head *e;
struct lnet_ni *ni = NULL;
struct lnet_remotenet *rnet;
- __u32 dstnet = LNET_NIDNET(dstnid);
+ __u32 dstnet = LNET_NID_NET(dstnid);
int hops;
int cpt;
__u32 order = 2;
struct list_head *rn_list;
+ struct lnet_ni *matched_dstnet = NULL;
/* if !local_nid_dist_zero, I don't return a distance of 0 ever
* (when lustre sees a distance of 0, it substitutes 0@lo), so I
* keep order 0 free for 0@lo and order 1 free for a local NID
- * match */
+ * match
+ * WARNING: dstnid and srcnid might point to same place.
+ * Don't set *srcnid until late.
+ */
LASSERT(the_lnet.ln_refcount > 0);
cpt = lnet_net_lock_current();
while ((ni = lnet_get_next_ni_locked(NULL, ni))) {
- if (ni->ni_nid == dstnid) {
- if (srcnidp != NULL)
- *srcnidp = dstnid;
+ if (nid_same(&ni->ni_nid, dstnid)) {
if (orderp != NULL) {
- if (dstnid == LNET_NID_LO_0)
+ if (nid_is_lo0(dstnid))
*orderp = 0;
else
*orderp = 1;
}
+ if (srcnid)
+ *srcnid = *dstnid;
lnet_net_unlock(cpt);
return local_nid_dist_zero ? 0 : 1;
}
- if (LNET_NIDNET(ni->ni_nid) == dstnet) {
- /* Check if ni was originally created in
- * current net namespace.
- * If not, assign order above 0xffff0000,
- * to make this ni not a priority. */
- if (current->nsproxy &&
- !net_eq(ni->ni_net_ns, current->nsproxy->net_ns))
- order += 0xffff0000;
- if (srcnidp != NULL)
- *srcnidp = ni->ni_nid;
- if (orderp != NULL)
- *orderp = order;
- lnet_net_unlock(cpt);
- return 1;
+ if (!matched_dstnet && LNET_NID_NET(&ni->ni_nid) == dstnet) {
+ matched_dstnet = ni;
+ /* We matched the destination net, but we may have
+ * additional local NIs to inspect.
+ *
+ * We record the order as appropriate, but
+ * they may be overwritten if we match local NI above.
+ */
+
+ if (orderp) {
+ /* Check if ni was originally created in
+ * current net namespace.
+ * If not, assign order above 0xffff0000,
+ * to make this ni not a priority.
+ */
+ if (current->nsproxy &&
+ !net_eq(ni->ni_net_ns,
+ current->nsproxy->net_ns))
+ *orderp = order + 0xffff0000;
+ else
+ *orderp = order;
+ }
}
order++;
}
- rn_list = lnet_net2rnethash(dstnet);
- list_for_each(e, rn_list) {
- rnet = list_entry(e, struct lnet_remotenet, lrn_list);
+ if (matched_dstnet) {
+ if (srcnid)
+ *srcnid = matched_dstnet->ni_nid;
+ lnet_net_unlock(cpt);
+ return 1;
+ }
+ rn_list = lnet_net2rnethash(dstnet);
+ list_for_each_entry(rnet, rn_list, lrn_list) {
if (rnet->lrn_net == dstnet) {
struct lnet_route *route;
struct lnet_route *shortest = NULL;
LASSERT(shortest != NULL);
hops = shortest_hops;
- if (srcnidp != NULL) {
+ if (srcnid) {
struct lnet_net *net;
net = lnet_get_net_locked(shortest->lr_lnet);
LASSERT(net);
ni = lnet_get_next_ni_locked(net, NULL);
- *srcnidp = ni->ni_nid;
+ *srcnid = ni->ni_nid;
}
if (orderp != NULL)
*orderp = order;
git://git.whamcloud.com / fs / lustre-release.git / blobdiff