-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
}
kib_tx_t *
-kiblnd_get_idle_tx (lnet_ni_t *ni)
+kiblnd_get_idle_tx(lnet_ni_t *ni, lnet_nid_t target)
{
- kib_net_t *net = (kib_net_t *)ni->ni_data;
- cfs_list_t *node;
- kib_tx_t *tx;
+ kib_net_t *net = (kib_net_t *)ni->ni_data;
+ cfs_list_t *node;
+ kib_tx_t *tx;
+ kib_tx_poolset_t *tps;
- node = kiblnd_pool_alloc_node(&net->ibn_tx_ps.tps_poolset);
+ tps = net->ibn_tx_ps[lnet_cpt_of_nid(target)];
+ node = kiblnd_pool_alloc_node(&tps->tps_poolset);
if (node == NULL)
return NULL;
tx = container_of(node, kib_tx_t, tx_list);
}
void
-kiblnd_drop_rx (kib_rx_t *rx)
+kiblnd_drop_rx(kib_rx_t *rx)
{
- kib_conn_t *conn = rx->rx_conn;
- unsigned long flags;
-
- cfs_spin_lock_irqsave(&kiblnd_data.kib_sched_lock, flags);
- LASSERT (conn->ibc_nrx > 0);
- conn->ibc_nrx--;
- cfs_spin_unlock_irqrestore(&kiblnd_data.kib_sched_lock, flags);
+ kib_conn_t *conn = rx->rx_conn;
+ struct kib_sched_info *sched = conn->ibc_sched;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sched->ibs_lock, flags);
+ LASSERT(conn->ibc_nrx > 0);
+ conn->ibc_nrx--;
+ spin_unlock_irqrestore(&sched->ibs_lock, flags);
- kiblnd_conn_decref(conn);
+ kiblnd_conn_decref(conn);
}
int
credit == IBLND_POSTRX_PEER_CREDIT ||
credit == IBLND_POSTRX_RSRVD_CREDIT);
- mr = kiblnd_find_dma_mr(net, rx->rx_msgaddr, IBLND_MSG_SIZE);
+ mr = kiblnd_find_dma_mr(conn->ibc_hdev, rx->rx_msgaddr, IBLND_MSG_SIZE);
LASSERT (mr != NULL);
rx->rx_sge.lkey = mr->lkey;
if (credit == IBLND_POSTRX_NO_CREDIT)
return 0;
- cfs_spin_lock(&conn->ibc_lock);
- if (credit == IBLND_POSTRX_PEER_CREDIT)
- conn->ibc_outstanding_credits++;
- else
- conn->ibc_reserved_credits++;
- cfs_spin_unlock(&conn->ibc_lock);
+ spin_lock(&conn->ibc_lock);
+ if (credit == IBLND_POSTRX_PEER_CREDIT)
+ conn->ibc_outstanding_credits++;
+ else
+ conn->ibc_reserved_credits++;
+ spin_unlock(&conn->ibc_lock);
- kiblnd_check_sends(conn);
- return 0;
+ kiblnd_check_sends(conn);
+ return 0;
}
kib_tx_t *
void
kiblnd_handle_completion(kib_conn_t *conn, int txtype, int status, __u64 cookie)
{
- kib_tx_t *tx;
- lnet_ni_t *ni = conn->ibc_peer->ibp_ni;
- int idle;
+ kib_tx_t *tx;
+ lnet_ni_t *ni = conn->ibc_peer->ibp_ni;
+ int idle;
- cfs_spin_lock(&conn->ibc_lock);
+ spin_lock(&conn->ibc_lock);
- tx = kiblnd_find_waiting_tx_locked(conn, txtype, cookie);
- if (tx == NULL) {
- cfs_spin_unlock(&conn->ibc_lock);
+ tx = kiblnd_find_waiting_tx_locked(conn, txtype, cookie);
+ if (tx == NULL) {
+ spin_unlock(&conn->ibc_lock);
CWARN("Unmatched completion type %x cookie "LPX64" from %s\n",
txtype, cookie, libcfs_nid2str(conn->ibc_peer->ibp_nid));
if (idle)
cfs_list_del(&tx->tx_list);
- cfs_spin_unlock(&conn->ibc_lock);
+ spin_unlock(&conn->ibc_lock);
- if (idle)
- kiblnd_tx_done(ni, tx);
+ if (idle)
+ kiblnd_tx_done(ni, tx);
}
void
-kiblnd_send_completion (kib_conn_t *conn, int type, int status, __u64 cookie)
+kiblnd_send_completion(kib_conn_t *conn, int type, int status, __u64 cookie)
{
- lnet_ni_t *ni = conn->ibc_peer->ibp_ni;
- kib_tx_t *tx = kiblnd_get_idle_tx(ni);
+ lnet_ni_t *ni = conn->ibc_peer->ibp_ni;
+ kib_tx_t *tx = kiblnd_get_idle_tx(ni, conn->ibc_peer->ibp_nid);
if (tx == NULL) {
CERROR("Can't get tx for completion %x for %s\n",
if (credits != 0) {
/* Have I received credits that will let me send? */
- cfs_spin_lock(&conn->ibc_lock);
+ spin_lock(&conn->ibc_lock);
- if (conn->ibc_credits + credits >
- IBLND_MSG_QUEUE_SIZE(conn->ibc_version)) {
- rc2 = conn->ibc_credits;
- cfs_spin_unlock(&conn->ibc_lock);
+ if (conn->ibc_credits + credits >
+ IBLND_MSG_QUEUE_SIZE(conn->ibc_version)) {
+ rc2 = conn->ibc_credits;
+ spin_unlock(&conn->ibc_lock);
CERROR("Bad credits from %s: %d + %d > %d\n",
libcfs_nid2str(conn->ibc_peer->ibp_nid),
conn->ibc_credits += credits;
- cfs_spin_unlock(&conn->ibc_lock);
+ /* This ensures the credit taken by NOOP can be returned */
+ if (msg->ibm_type == IBLND_MSG_NOOP &&
+ !IBLND_OOB_CAPABLE(conn->ibc_version)) /* v1 only */
+ conn->ibc_outstanding_credits++;
+
+ spin_unlock(&conn->ibc_lock);
kiblnd_check_sends(conn);
}
break;
case IBLND_MSG_NOOP:
- if (IBLND_OOB_CAPABLE(conn->ibc_version))
+ if (IBLND_OOB_CAPABLE(conn->ibc_version)) {
post_credit = IBLND_POSTRX_NO_CREDIT;
- else
+ break;
+ }
+
+ if (credits != 0) /* credit already posted */
+ post_credit = IBLND_POSTRX_NO_CREDIT;
+ else /* a keepalive NOOP */
post_credit = IBLND_POSTRX_PEER_CREDIT;
break;
case IBLND_MSG_PUT_ACK:
post_credit = IBLND_POSTRX_RSRVD_CREDIT;
- cfs_spin_lock(&conn->ibc_lock);
- tx = kiblnd_find_waiting_tx_locked(conn, IBLND_MSG_PUT_REQ,
- msg->ibm_u.putack.ibpam_src_cookie);
- if (tx != NULL)
- cfs_list_del(&tx->tx_list);
- cfs_spin_unlock(&conn->ibc_lock);
+ spin_lock(&conn->ibc_lock);
+ tx = kiblnd_find_waiting_tx_locked(conn, IBLND_MSG_PUT_REQ,
+ msg->ibm_u.putack.ibpam_src_cookie);
+ if (tx != NULL)
+ cfs_list_del(&tx->tx_list);
+ spin_unlock(&conn->ibc_lock);
if (tx == NULL) {
CERROR("Unmatched PUT_ACK from %s\n",
CERROR("Can't setup rdma for PUT to %s: %d\n",
libcfs_nid2str(conn->ibc_peer->ibp_nid), rc2);
- cfs_spin_lock(&conn->ibc_lock);
- tx->tx_waiting = 0; /* clear waiting and queue atomically */
- kiblnd_queue_tx_locked(tx, conn);
- cfs_spin_unlock(&conn->ibc_lock);
- break;
+ spin_lock(&conn->ibc_lock);
+ tx->tx_waiting = 0; /* clear waiting and queue atomically */
+ kiblnd_queue_tx_locked(tx, conn);
+ spin_unlock(&conn->ibc_lock);
+ break;
case IBLND_MSG_PUT_DONE:
post_credit = IBLND_POSTRX_PEER_CREDIT;
goto ignore;
if (status != IB_WC_SUCCESS) {
- CDEBUG(D_NETERROR, "Rx from %s failed: %d\n",
- libcfs_nid2str(conn->ibc_peer->ibp_nid), status);
+ CNETERR("Rx from %s failed: %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid), status);
goto failed;
}
/* racing with connection establishment/teardown! */
if (conn->ibc_state < IBLND_CONN_ESTABLISHED) {
- cfs_rwlock_t *g_lock = &kiblnd_data.kib_global_lock;
- unsigned long flags;
-
- cfs_write_lock_irqsave(g_lock, flags);
- /* must check holding global lock to eliminate race */
- if (conn->ibc_state < IBLND_CONN_ESTABLISHED) {
- cfs_list_add_tail(&rx->rx_list, &conn->ibc_early_rxs);
- cfs_write_unlock_irqrestore(g_lock, flags);
- return;
- }
- cfs_write_unlock_irqrestore(g_lock, flags);
+ rwlock_t *g_lock = &kiblnd_data.kib_global_lock;
+ unsigned long flags;
+
+ write_lock_irqsave(g_lock, flags);
+ /* must check holding global lock to eliminate race */
+ if (conn->ibc_state < IBLND_CONN_ESTABLISHED) {
+ cfs_list_add_tail(&rx->rx_list, &conn->ibc_early_rxs);
+ write_unlock_irqrestore(g_lock, flags);
+ return;
+ }
+ write_unlock_irqrestore(g_lock, flags);
}
kiblnd_handle_rx(rx);
return;
static int
kiblnd_fmr_map_tx(kib_net_t *net, kib_tx_t *tx, kib_rdma_desc_t *rd, int nob)
{
- kib_dev_t *ibdev = net->ibn_dev;
- __u64 *pages = tx->tx_pages;
- int npages;
- int size;
- int rc;
- int i;
+ kib_hca_dev_t *hdev;
+ __u64 *pages = tx->tx_pages;
+ kib_fmr_poolset_t *fps;
+ int npages;
+ int size;
+ int cpt;
+ int rc;
+ int i;
+
+ LASSERT(tx->tx_pool != NULL);
+ LASSERT(tx->tx_pool->tpo_pool.po_owner != NULL);
+
+ hdev = tx->tx_pool->tpo_hdev;
for (i = 0, npages = 0; i < rd->rd_nfrags; i++) {
for (size = 0; size < rd->rd_frags[i].rf_nob;
- size += ibdev->ibd_page_size) {
+ size += hdev->ibh_page_size) {
pages[npages ++] = (rd->rd_frags[i].rf_addr &
- ibdev->ibd_page_mask) + size;
+ hdev->ibh_page_mask) + size;
}
}
- rc = kiblnd_fmr_pool_map(&net->ibn_fmr_ps, pages, npages, 0, &tx->tx_u.fmr);
+ cpt = tx->tx_pool->tpo_pool.po_owner->ps_cpt;
+
+ fps = net->ibn_fmr_ps[cpt];
+ rc = kiblnd_fmr_pool_map(fps, pages, npages, 0, &tx->tx_u.fmr);
if (rc != 0) {
CERROR ("Can't map %d pages: %d\n", npages, rc);
return rc;
* the rkey */
rd->rd_key = (rd != tx->tx_rd) ? tx->tx_u.fmr.fmr_pfmr->fmr->rkey :
tx->tx_u.fmr.fmr_pfmr->fmr->lkey;
- rd->rd_frags[0].rf_addr &= ~ibdev->ibd_page_mask;
+ rd->rd_frags[0].rf_addr &= ~hdev->ibh_page_mask;
rd->rd_frags[0].rf_nob = nob;
rd->rd_nfrags = 1;
static int
kiblnd_pmr_map_tx(kib_net_t *net, kib_tx_t *tx, kib_rdma_desc_t *rd, int nob)
{
- __u64 iova;
- int rc;
+ kib_hca_dev_t *hdev;
+ kib_pmr_poolset_t *pps;
+ __u64 iova;
+ int cpt;
+ int rc;
+
+ LASSERT(tx->tx_pool != NULL);
+ LASSERT(tx->tx_pool->tpo_pool.po_owner != NULL);
+
+ hdev = tx->tx_pool->tpo_hdev;
- iova = rd->rd_frags[0].rf_addr & ~net->ibn_dev->ibd_page_mask;
+ iova = rd->rd_frags[0].rf_addr & ~hdev->ibh_page_mask;
- rc = kiblnd_pmr_pool_map(&net->ibn_pmr_ps, rd, &iova, &tx->tx_u.pmr);
+ cpt = tx->tx_pool->tpo_pool.po_owner->ps_cpt;
+
+ pps = net->ibn_pmr_ps[cpt];
+ rc = kiblnd_pmr_pool_map(pps, hdev, rd, &iova, &tx->tx_u.pmr);
if (rc != 0) {
CERROR("Failed to create MR by phybuf: %d\n", rc);
return rc;
void
kiblnd_unmap_tx(lnet_ni_t *ni, kib_tx_t *tx)
{
- kib_net_t *net = ni->ni_data;
+ kib_net_t *net = ni->ni_data;
- LASSERT (net != NULL);
+ LASSERT(net != NULL);
- if (net->ibn_with_fmr && tx->tx_u.fmr.fmr_pfmr != NULL) {
- kiblnd_fmr_pool_unmap(&tx->tx_u.fmr, tx->tx_status);
- tx->tx_u.fmr.fmr_pfmr = NULL;
- } else if (net->ibn_with_pmr && tx->tx_u.pmr != NULL) {
- kiblnd_pmr_pool_unmap(tx->tx_u.pmr);
- tx->tx_u.pmr = NULL;
- }
+ if (net->ibn_fmr_ps != NULL && tx->tx_u.fmr.fmr_pfmr != NULL) {
+ kiblnd_fmr_pool_unmap(&tx->tx_u.fmr, tx->tx_status);
+ tx->tx_u.fmr.fmr_pfmr = NULL;
+
+ } else if (net->ibn_pmr_ps != NULL && tx->tx_u.pmr != NULL) {
+ kiblnd_pmr_pool_unmap(tx->tx_u.pmr);
+ tx->tx_u.pmr = NULL;
+ }
if (tx->tx_nfrags != 0) {
- kiblnd_dma_unmap_sg(net->ibn_dev->ibd_cmid->device,
+ kiblnd_dma_unmap_sg(tx->tx_pool->tpo_hdev->ibh_ibdev,
tx->tx_frags, tx->tx_nfrags, tx->tx_dmadir);
tx->tx_nfrags = 0;
}
kiblnd_map_tx(lnet_ni_t *ni, kib_tx_t *tx,
kib_rdma_desc_t *rd, int nfrags)
{
+ kib_hca_dev_t *hdev = tx->tx_pool->tpo_hdev;
kib_net_t *net = ni->ni_data;
struct ib_mr *mr = NULL;
__u32 nob;
tx->tx_nfrags = nfrags;
rd->rd_nfrags =
- kiblnd_dma_map_sg(net->ibn_dev->ibd_cmid->device,
+ kiblnd_dma_map_sg(hdev->ibh_ibdev,
tx->tx_frags, tx->tx_nfrags, tx->tx_dmadir);
for (i = 0, nob = 0; i < rd->rd_nfrags; i++) {
rd->rd_frags[i].rf_nob = kiblnd_sg_dma_len(
- net->ibn_dev->ibd_cmid->device, &tx->tx_frags[i]);
+ hdev->ibh_ibdev, &tx->tx_frags[i]);
rd->rd_frags[i].rf_addr = kiblnd_sg_dma_address(
- net->ibn_dev->ibd_cmid->device, &tx->tx_frags[i]);
+ hdev->ibh_ibdev, &tx->tx_frags[i]);
nob += rd->rd_frags[i].rf_nob;
}
/* looking for pre-mapping MR */
- mr = kiblnd_find_rd_dma_mr(net, rd);
+ mr = kiblnd_find_rd_dma_mr(hdev, rd);
if (mr != NULL) {
/* found pre-mapping MR */
rd->rd_key = (rd != tx->tx_rd) ? mr->rkey : mr->lkey;
return 0;
}
- if (net->ibn_with_fmr)
- return kiblnd_fmr_map_tx(net, tx, rd, nob);
- else if (net->ibn_with_pmr)
- return kiblnd_pmr_map_tx(net, tx, rd, nob);
+ if (net->ibn_fmr_ps != NULL)
+ return kiblnd_fmr_map_tx(net, tx, rd, nob);
+ else if (net->ibn_pmr_ps != NULL)
+ return kiblnd_pmr_map_tx(net, tx, rd, nob);
- return -EINVAL;
+ return -EINVAL;
}
fragnob = min((int)(kiov->kiov_len - offset), nob);
- memset(sg, 0, sizeof(*sg));
sg_set_page(sg, kiov->kiov_page, fragnob,
kiov->kiov_offset + offset);
sg++;
}
if (credit != 0 && !IBLND_OOB_CAPABLE(ver) &&
- conn->ibc_credits == 1 && /* last credit reserved for */
- conn->ibc_outstanding_credits == 0) { /* giving back credits */
+ conn->ibc_credits == 1 && /* last credit reserved */
+ msg->ibm_type != IBLND_MSG_NOOP) { /* for NOOP */
CDEBUG(D_NET, "%s: not using last credit\n",
libcfs_nid2str(peer->ibp_nid));
return -EAGAIN;
tx->tx_queued = 0;
if (msg->ibm_type == IBLND_MSG_NOOP &&
- (!kiblnd_send_noop(conn) || /* redundant NOOP */
+ (!kiblnd_need_noop(conn) || /* redundant NOOP */
(IBLND_OOB_CAPABLE(ver) && /* posted enough NOOP */
conn->ibc_noops_posted == IBLND_OOB_MSGS(ver)))) {
/* OK to drop when posted enough NOOPs, since
* kiblnd_check_sends will queue NOOP again when
* posted NOOPs complete */
- cfs_spin_unlock(&conn->ibc_lock);
- kiblnd_tx_done(peer->ibp_ni, tx);
- cfs_spin_lock(&conn->ibc_lock);
+ spin_unlock(&conn->ibc_lock);
+ kiblnd_tx_done(peer->ibp_ni, tx);
+ spin_lock(&conn->ibc_lock);
CDEBUG(D_NET, "%s(%d): redundant or enough NOOP\n",
libcfs_nid2str(peer->ibp_nid),
conn->ibc_noops_posted);
cfs_list_add(&tx->tx_list, &conn->ibc_active_txs);
/* I'm still holding ibc_lock! */
- if (conn->ibc_state != IBLND_CONN_ESTABLISHED)
+ if (conn->ibc_state != IBLND_CONN_ESTABLISHED) {
rc = -ECONNABORTED;
- else
+ } else if (tx->tx_pool->tpo_pool.po_failed ||
+ conn->ibc_hdev != tx->tx_pool->tpo_hdev) {
+ /* close_conn will launch failover */
+ rc = -ENETDOWN;
+ } else {
rc = ib_post_send(conn->ibc_cmid->qp,
tx->tx_wrq, &bad_wrq);
+ }
+
conn->ibc_last_send = jiffies;
if (rc == 0)
if (done)
cfs_list_del(&tx->tx_list);
- cfs_spin_unlock(&conn->ibc_lock);
+ spin_unlock(&conn->ibc_lock);
if (conn->ibc_state == IBLND_CONN_ESTABLISHED)
CERROR("Error %d posting transmit to %s\n",
if (done)
kiblnd_tx_done(peer->ibp_ni, tx);
- cfs_spin_lock(&conn->ibc_lock);
+ spin_lock(&conn->ibc_lock);
- return -EIO;
+ return -EIO;
}
void
return;
}
- cfs_spin_lock(&conn->ibc_lock);
+ spin_lock(&conn->ibc_lock);
LASSERT (conn->ibc_nsends_posted <= IBLND_CONCURRENT_SENDS(ver));
LASSERT (!IBLND_OOB_CAPABLE(ver) ||
conn->ibc_reserved_credits--;
}
- if (kiblnd_send_noop(conn)) {
- cfs_spin_unlock(&conn->ibc_lock);
+ if (kiblnd_need_noop(conn)) {
+ spin_unlock(&conn->ibc_lock);
- tx = kiblnd_get_idle_tx(ni);
- if (tx != NULL)
- kiblnd_init_tx_msg(ni, tx, IBLND_MSG_NOOP, 0);
+ tx = kiblnd_get_idle_tx(ni, conn->ibc_peer->ibp_nid);
+ if (tx != NULL)
+ kiblnd_init_tx_msg(ni, tx, IBLND_MSG_NOOP, 0);
- cfs_spin_lock(&conn->ibc_lock);
+ spin_lock(&conn->ibc_lock);
if (tx != NULL)
kiblnd_queue_tx_locked(tx, conn);
}
credit = 0;
tx = cfs_list_entry(conn->ibc_tx_queue_nocred.next,
kib_tx_t, tx_list);
+ } else if (!cfs_list_empty(&conn->ibc_tx_noops)) {
+ LASSERT (!IBLND_OOB_CAPABLE(ver));
+ credit = 1;
+ tx = cfs_list_entry(conn->ibc_tx_noops.next,
+ kib_tx_t, tx_list);
} else if (!cfs_list_empty(&conn->ibc_tx_queue)) {
credit = 1;
tx = cfs_list_entry(conn->ibc_tx_queue.next,
break;
}
- cfs_spin_unlock(&conn->ibc_lock);
+ spin_unlock(&conn->ibc_lock);
- kiblnd_conn_decref(conn); /* ...until here */
+ kiblnd_conn_decref(conn); /* ...until here */
}
void
if (failed) {
if (conn->ibc_state == IBLND_CONN_ESTABLISHED)
- CDEBUG(D_NETERROR, "Tx -> %s cookie "LPX64
- " sending %d waiting %d: failed %d\n",
- libcfs_nid2str(conn->ibc_peer->ibp_nid),
- tx->tx_cookie, tx->tx_sending, tx->tx_waiting,
- status);
+ CNETERR("Tx -> %s cookie "LPX64
+ " sending %d waiting %d: failed %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid),
+ tx->tx_cookie, tx->tx_sending, tx->tx_waiting,
+ status);
kiblnd_close_conn(conn, -EIO);
} else {
kiblnd_peer_alive(conn->ibc_peer);
}
- cfs_spin_lock(&conn->ibc_lock);
+ spin_lock(&conn->ibc_lock);
/* I could be racing with rdma completion. Whoever makes 'tx' idle
* gets to free it, which also drops its ref on 'conn'. */
kiblnd_conn_addref(conn); /* 1 ref for me.... */
- cfs_spin_unlock(&conn->ibc_lock);
+ spin_unlock(&conn->ibc_lock);
if (idle)
kiblnd_tx_done(conn->ibc_peer->ibp_ni, tx);
void
kiblnd_init_tx_msg (lnet_ni_t *ni, kib_tx_t *tx, int type, int body_nob)
{
- kib_net_t *net = ni->ni_data;
+ kib_hca_dev_t *hdev = tx->tx_pool->tpo_hdev;
struct ib_sge *sge = &tx->tx_sge[tx->tx_nwrq];
struct ib_send_wr *wrq = &tx->tx_wrq[tx->tx_nwrq];
int nob = offsetof (kib_msg_t, ibm_u) + body_nob;
struct ib_mr *mr;
- LASSERT (net != NULL);
LASSERT (tx->tx_nwrq >= 0);
LASSERT (tx->tx_nwrq < IBLND_MAX_RDMA_FRAGS + 1);
LASSERT (nob <= IBLND_MSG_SIZE);
kiblnd_init_msg(tx->tx_msg, type, body_nob);
- mr = kiblnd_find_dma_mr(net, tx->tx_msgaddr, nob);
+ mr = kiblnd_find_dma_mr(hdev, tx->tx_msgaddr, nob);
LASSERT (mr != NULL);
sge->lkey = mr->lkey;
LASSERT (!tx->tx_queued); /* not queued for sending already */
LASSERT (conn->ibc_state >= IBLND_CONN_ESTABLISHED);
- tx->tx_queued = 1;
- tx->tx_deadline = jiffies + (*kiblnd_tunables.kib_timeout * CFS_HZ);
+ tx->tx_queued = 1;
+ tx->tx_deadline = jiffies + (*kiblnd_tunables.kib_timeout * HZ);
if (tx->tx_conn == NULL) {
kiblnd_conn_addref(conn);
if (IBLND_OOB_CAPABLE(conn->ibc_version))
q = &conn->ibc_tx_queue_nocred;
else
- q = &conn->ibc_tx_queue;
+ q = &conn->ibc_tx_noops;
break;
case IBLND_MSG_IMMEDIATE:
void
kiblnd_queue_tx (kib_tx_t *tx, kib_conn_t *conn)
{
- cfs_spin_lock(&conn->ibc_lock);
- kiblnd_queue_tx_locked(tx, conn);
- cfs_spin_unlock(&conn->ibc_lock);
+ spin_lock(&conn->ibc_lock);
+ kiblnd_queue_tx_locked(tx, conn);
+ spin_unlock(&conn->ibc_lock);
- kiblnd_check_sends(conn);
+ kiblnd_check_sends(conn);
+}
+
+static int kiblnd_resolve_addr(struct rdma_cm_id *cmid,
+ struct sockaddr_in *srcaddr,
+ struct sockaddr_in *dstaddr,
+ int timeout_ms)
+{
+ unsigned short port;
+ int rc;
+
+#ifdef HAVE_OFED_RDMA_SET_REUSEADDR
+ /* allow the port to be reused */
+ rc = rdma_set_reuseaddr(cmid, 1);
+ if (rc != 0) {
+ CERROR("Unable to set reuse on cmid: %d\n", rc);
+ return rc;
+ }
+#endif
+
+ /* look for a free privileged port */
+ for (port = PROT_SOCK-1; port > 0; port--) {
+ srcaddr->sin_port = htons(port);
+ rc = rdma_resolve_addr(cmid,
+ (struct sockaddr *)srcaddr,
+ (struct sockaddr *)dstaddr,
+ timeout_ms);
+ if (rc == 0) {
+ CDEBUG(D_NET, "bound to port %hu\n", port);
+ return 0;
+ } else if (rc == -EADDRINUSE || rc == -EADDRNOTAVAIL) {
+ CDEBUG(D_NET, "bind to port %hu failed: %d\n",
+ port, rc);
+ } else {
+ return rc;
+ }
+ }
+
+ CERROR("Failed to bind to a free privileged port\n");
+#ifndef HAVE_OFED_RDMA_SET_REUSEADDR
+ CERROR("You may need IB verbs that supports rdma_set_reuseaddr()\n");
+#endif
+ return rc;
}
void
LASSERT (net != NULL);
LASSERT (peer->ibp_connecting > 0);
- cmid = rdma_create_id(kiblnd_cm_callback, peer, RDMA_PS_TCP);
+ cmid = kiblnd_rdma_create_id(kiblnd_cm_callback, peer, RDMA_PS_TCP,
+ IB_QPT_RC);
+
if (IS_ERR(cmid)) {
CERROR("Can't create CMID for %s: %ld\n",
libcfs_nid2str(peer->ibp_nid), PTR_ERR(cmid));
kiblnd_peer_addref(peer); /* cmid's ref */
- rc = rdma_resolve_addr(cmid,
- (struct sockaddr *)&srcaddr,
- (struct sockaddr *)&dstaddr,
- *kiblnd_tunables.kib_timeout * 1000);
- if (rc == 0) {
- LASSERT (cmid->device != NULL);
- CDEBUG(D_NET, "%s: connection bound to %s:%u.%u.%u.%u:%s\n",
- libcfs_nid2str(peer->ibp_nid), dev->ibd_ifname,
- HIPQUAD(dev->ibd_ifip), cmid->device->name);
- return;
+ if (*kiblnd_tunables.kib_use_priv_port) {
+ rc = kiblnd_resolve_addr(cmid, &srcaddr, &dstaddr,
+ *kiblnd_tunables.kib_timeout * 1000);
+ } else {
+ rc = rdma_resolve_addr(cmid,
+ (struct sockaddr *)&srcaddr,
+ (struct sockaddr *)&dstaddr,
+ *kiblnd_tunables.kib_timeout * 1000);
+ }
+ if (rc != 0) {
+ /* Can't initiate address resolution: */
+ CERROR("Can't resolve addr for %s: %d\n",
+ libcfs_nid2str(peer->ibp_nid), rc);
+ goto failed2;
}
- /* Can't initiate address resolution: */
- CERROR("Can't resolve addr for %s: %d\n",
- libcfs_nid2str(peer->ibp_nid), rc);
+ LASSERT (cmid->device != NULL);
+ CDEBUG(D_NET, "%s: connection bound to %s:%u.%u.%u.%u:%s\n",
+ libcfs_nid2str(peer->ibp_nid), dev->ibd_ifname,
+ HIPQUAD(dev->ibd_ifip), cmid->device->name);
+ return;
+
+ failed2:
kiblnd_peer_decref(peer); /* cmid's ref */
rdma_destroy_id(cmid);
failed:
kib_peer_t *peer;
kib_peer_t *peer2;
kib_conn_t *conn;
- cfs_rwlock_t *g_lock = &kiblnd_data.kib_global_lock;
+ rwlock_t *g_lock = &kiblnd_data.kib_global_lock;
unsigned long flags;
int rc;
/* First time, just use a read lock since I expect to find my peer
* connected */
- cfs_read_lock_irqsave(g_lock, flags);
+ read_lock_irqsave(g_lock, flags);
peer = kiblnd_find_peer_locked(nid);
if (peer != NULL && !cfs_list_empty(&peer->ibp_conns)) {
conn = kiblnd_get_conn_locked(peer);
kiblnd_conn_addref(conn); /* 1 ref for me... */
- cfs_read_unlock_irqrestore(g_lock, flags);
+ read_unlock_irqrestore(g_lock, flags);
if (tx != NULL)
kiblnd_queue_tx(tx, conn);
return;
}
- cfs_read_unlock(g_lock);
- /* Re-try with a write lock */
- cfs_write_lock(g_lock);
+ read_unlock(g_lock);
+ /* Re-try with a write lock */
+ write_lock(g_lock);
peer = kiblnd_find_peer_locked(nid);
if (peer != NULL) {
if (tx != NULL)
cfs_list_add_tail(&tx->tx_list,
&peer->ibp_tx_queue);
- cfs_write_unlock_irqrestore(g_lock, flags);
- } else {
- conn = kiblnd_get_conn_locked(peer);
- kiblnd_conn_addref(conn); /* 1 ref for me... */
+ write_unlock_irqrestore(g_lock, flags);
+ } else {
+ conn = kiblnd_get_conn_locked(peer);
+ kiblnd_conn_addref(conn); /* 1 ref for me... */
- cfs_write_unlock_irqrestore(g_lock, flags);
+ write_unlock_irqrestore(g_lock, flags);
if (tx != NULL)
kiblnd_queue_tx(tx, conn);
return;
}
- cfs_write_unlock_irqrestore(g_lock, flags);
+ write_unlock_irqrestore(g_lock, flags);
/* Allocate a peer ready to add to the peer table and retry */
rc = kiblnd_create_peer(ni, &peer, nid);
return;
}
- cfs_write_lock_irqsave(g_lock, flags);
+ write_lock_irqsave(g_lock, flags);
peer2 = kiblnd_find_peer_locked(nid);
if (peer2 != NULL) {
if (tx != NULL)
cfs_list_add_tail(&tx->tx_list,
&peer2->ibp_tx_queue);
- cfs_write_unlock_irqrestore(g_lock, flags);
- } else {
- conn = kiblnd_get_conn_locked(peer2);
- kiblnd_conn_addref(conn); /* 1 ref for me... */
+ write_unlock_irqrestore(g_lock, flags);
+ } else {
+ conn = kiblnd_get_conn_locked(peer2);
+ kiblnd_conn_addref(conn); /* 1 ref for me... */
- cfs_write_unlock_irqrestore(g_lock, flags);
+ write_unlock_irqrestore(g_lock, flags);
if (tx != NULL)
kiblnd_queue_tx(tx, conn);
kiblnd_peer_addref(peer);
cfs_list_add_tail(&peer->ibp_list, kiblnd_nid2peerlist(nid));
- cfs_write_unlock_irqrestore(g_lock, flags);
+ write_unlock_irqrestore(g_lock, flags);
kiblnd_connect_peer(peer);
kiblnd_peer_decref(peer);
if (nob <= IBLND_MSG_SIZE)
break; /* send IMMEDIATE */
- tx = kiblnd_get_idle_tx(ni);
- if (tx == NULL) {
- CERROR("Can't allocate txd for GET to %s: \n",
- libcfs_nid2str(target.nid));
- return -ENOMEM;
- }
+ tx = kiblnd_get_idle_tx(ni, target.nid);
+ if (tx == NULL) {
+ CERROR("Can't allocate txd for GET to %s\n",
+ libcfs_nid2str(target.nid));
+ return -ENOMEM;
+ }
ibmsg = tx->tx_msg;
if (nob <= IBLND_MSG_SIZE)
break; /* send IMMEDIATE */
- tx = kiblnd_get_idle_tx(ni);
+ tx = kiblnd_get_idle_tx(ni, target.nid);
if (tx == NULL) {
CERROR("Can't allocate %s txd for %s\n",
type == LNET_MSG_PUT ? "PUT" : "REPLY",
LASSERT (offsetof(kib_msg_t, ibm_u.immediate.ibim_payload[payload_nob])
<= IBLND_MSG_SIZE);
- tx = kiblnd_get_idle_tx(ni);
+ tx = kiblnd_get_idle_tx(ni, target.nid);
if (tx == NULL) {
CERROR ("Can't send %d to %s: tx descs exhausted\n",
type, libcfs_nid2str(target.nid));
kib_tx_t *tx;
int rc;
- tx = kiblnd_get_idle_tx(ni);
+ tx = kiblnd_get_idle_tx(ni, rx->rx_conn->ibc_peer->ibp_nid);
if (tx == NULL) {
CERROR("Can't get tx for REPLY to %s\n",
libcfs_nid2str(target.nid));
break;
}
- tx = kiblnd_get_idle_tx(ni);
+ tx = kiblnd_get_idle_tx(ni, conn->ibc_peer->ibp_nid);
if (tx == NULL) {
CERROR("Can't allocate tx for %s\n",
libcfs_nid2str(conn->ibc_peer->ibp_nid));
}
int
-kiblnd_thread_start (int (*fn)(void *arg), void *arg)
+kiblnd_thread_start(int (*fn)(void *arg), void *arg, char *name)
{
- long pid = cfs_kernel_thread (fn, arg, 0);
+ struct task_struct *task = kthread_run(fn, arg, name);
- if (pid < 0)
- return ((int)pid);
+ if (IS_ERR(task))
+ return PTR_ERR(task);
- cfs_atomic_inc (&kiblnd_data.kib_nthreads);
- return (0);
+ cfs_atomic_inc(&kiblnd_data.kib_nthreads);
+ return 0;
}
void
cfs_time_t last_alive = 0;
unsigned long flags;
- cfs_read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
+ read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
if (cfs_list_empty(&peer->ibp_conns) &&
peer->ibp_accepting == 0 &&
last_alive = peer->ibp_last_alive;
}
- cfs_read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
+ read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
if (error != 0)
lnet_notify(peer->ibp_ni,
* connection to be finished off by the connd. Otherwise the connd is
* already dealing with it (either to set it up or tear it down).
* Caller holds kib_global_lock exclusively in irq context */
- unsigned long flags;
kib_peer_t *peer = conn->ibc_peer;
+ kib_dev_t *dev;
+ unsigned long flags;
LASSERT (error != 0 || conn->ibc_state >= IBLND_CONN_ESTABLISHED);
return; /* already being handled */
if (error == 0 &&
+ cfs_list_empty(&conn->ibc_tx_noops) &&
cfs_list_empty(&conn->ibc_tx_queue) &&
cfs_list_empty(&conn->ibc_tx_queue_rsrvd) &&
cfs_list_empty(&conn->ibc_tx_queue_nocred) &&
CDEBUG(D_NET, "closing conn to %s\n",
libcfs_nid2str(peer->ibp_nid));
} else {
- CDEBUG(D_NETERROR, "Closing conn to %s: error %d%s%s%s%s\n",
+ CNETERR("Closing conn to %s: error %d%s%s%s%s%s\n",
libcfs_nid2str(peer->ibp_nid), error,
cfs_list_empty(&conn->ibc_tx_queue) ? "" : "(sending)",
+ cfs_list_empty(&conn->ibc_tx_noops) ? "" : "(sending_noops)",
cfs_list_empty(&conn->ibc_tx_queue_rsrvd) ? "" : "(sending_rsrvd)",
cfs_list_empty(&conn->ibc_tx_queue_nocred) ? "" : "(sending_nocred)",
cfs_list_empty(&conn->ibc_active_txs) ? "" : "(waiting)");
}
+ dev = ((kib_net_t *)peer->ibp_ni->ni_data)->ibn_dev;
cfs_list_del(&conn->ibc_list);
/* connd (see below) takes over ibc_list's ref */
kiblnd_set_conn_state(conn, IBLND_CONN_CLOSING);
- cfs_spin_lock_irqsave(&kiblnd_data.kib_connd_lock, flags);
+ if (error != 0 &&
+ kiblnd_dev_can_failover(dev)) {
+ cfs_list_add_tail(&dev->ibd_fail_list,
+ &kiblnd_data.kib_failed_devs);
+ wake_up(&kiblnd_data.kib_failover_waitq);
+ }
+
+ spin_lock_irqsave(&kiblnd_data.kib_connd_lock, flags);
- cfs_list_add_tail (&conn->ibc_list, &kiblnd_data.kib_connd_conns);
- cfs_waitq_signal (&kiblnd_data.kib_connd_waitq);
+ cfs_list_add_tail(&conn->ibc_list, &kiblnd_data.kib_connd_conns);
+ wake_up(&kiblnd_data.kib_connd_waitq);
- cfs_spin_unlock_irqrestore(&kiblnd_data.kib_connd_lock, flags);
+ spin_unlock_irqrestore(&kiblnd_data.kib_connd_lock, flags);
}
void
-kiblnd_close_conn (kib_conn_t *conn, int error)
+kiblnd_close_conn(kib_conn_t *conn, int error)
{
- unsigned long flags;
+ unsigned long flags;
- cfs_write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
+ write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
- kiblnd_close_conn_locked(conn, error);
+ kiblnd_close_conn_locked(conn, error);
- cfs_write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
+ write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
}
void
kiblnd_handle_early_rxs(kib_conn_t *conn)
{
- unsigned long flags;
- kib_rx_t *rx;
+ unsigned long flags;
+ kib_rx_t *rx;
- LASSERT (!cfs_in_interrupt());
- LASSERT (conn->ibc_state >= IBLND_CONN_ESTABLISHED);
+ LASSERT(!cfs_in_interrupt());
+ LASSERT(conn->ibc_state >= IBLND_CONN_ESTABLISHED);
- cfs_write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
- while (!cfs_list_empty(&conn->ibc_early_rxs)) {
- rx = cfs_list_entry(conn->ibc_early_rxs.next,
- kib_rx_t, rx_list);
- cfs_list_del(&rx->rx_list);
- cfs_write_unlock_irqrestore(&kiblnd_data.kib_global_lock,
- flags);
+ write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
+ while (!cfs_list_empty(&conn->ibc_early_rxs)) {
+ rx = cfs_list_entry(conn->ibc_early_rxs.next,
+ kib_rx_t, rx_list);
+ cfs_list_del(&rx->rx_list);
+ write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
- kiblnd_handle_rx(rx);
+ kiblnd_handle_rx(rx);
- cfs_write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
+ write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
}
- cfs_write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
+ write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
}
void
cfs_list_t *nxt;
kib_tx_t *tx;
- cfs_spin_lock(&conn->ibc_lock);
+ spin_lock(&conn->ibc_lock);
cfs_list_for_each_safe (tmp, nxt, txs) {
tx = cfs_list_entry (tmp, kib_tx_t, tx_list);
}
}
- cfs_spin_unlock(&conn->ibc_lock);
+ spin_unlock(&conn->ibc_lock);
- kiblnd_txlist_done(conn->ibc_peer->ibp_ni,
- &zombies, -ECONNABORTED);
+ kiblnd_txlist_done(conn->ibc_peer->ibp_ni, &zombies, -ECONNABORTED);
}
void
/* Complete all tx descs not waiting for sends to complete.
* NB we should be safe from RDMA now that the QP has changed state */
+ kiblnd_abort_txs(conn, &conn->ibc_tx_noops);
kiblnd_abort_txs(conn, &conn->ibc_tx_queue);
kiblnd_abort_txs(conn, &conn->ibc_tx_queue_rsrvd);
kiblnd_abort_txs(conn, &conn->ibc_tx_queue_nocred);
LASSERT (error != 0);
LASSERT (!cfs_in_interrupt());
- cfs_write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
+ write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
if (active) {
LASSERT (peer->ibp_connecting > 0);
if (peer->ibp_connecting != 0 ||
peer->ibp_accepting != 0) {
/* another connection attempt under way... */
- cfs_write_unlock_irqrestore(&kiblnd_data.kib_global_lock,
+ write_unlock_irqrestore(&kiblnd_data.kib_global_lock,
flags);
return;
}
LASSERT (cfs_list_empty(&peer->ibp_tx_queue));
}
- cfs_write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
+ write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
kiblnd_peer_notify(peer);
if (cfs_list_empty (&zombies))
return;
- CDEBUG (D_NETERROR, "Deleting messages for %s: connection failed\n",
+ CNETERR("Deleting messages for %s: connection failed\n",
libcfs_nid2str(peer->ibp_nid));
kiblnd_txlist_done(peer->ibp_ni, &zombies, -EHOSTUNREACH);
}
/* connection established */
- cfs_write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
+ write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
conn->ibc_last_send = jiffies;
kiblnd_set_conn_state(conn, IBLND_CONN_ESTABLISHED);
/* start to shut down connection */
kiblnd_close_conn_locked(conn, -ECONNABORTED);
- cfs_write_unlock_irqrestore(&kiblnd_data.kib_global_lock,
- flags);
+ write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
- kiblnd_txlist_done(ni, &txs, -ECONNABORTED);
+ kiblnd_txlist_done(ni, &txs, -ECONNABORTED);
- return;
- }
+ return;
+ }
- cfs_write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
+ write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
- /* Schedule blocked txs */
- cfs_spin_lock (&conn->ibc_lock);
- while (!cfs_list_empty (&txs)) {
- tx = cfs_list_entry (txs.next, kib_tx_t, tx_list);
- cfs_list_del(&tx->tx_list);
+ /* Schedule blocked txs */
+ spin_lock(&conn->ibc_lock);
+ while (!cfs_list_empty(&txs)) {
+ tx = cfs_list_entry(txs.next, kib_tx_t, tx_list);
+ cfs_list_del(&tx->tx_list);
- kiblnd_queue_tx_locked(tx, conn);
- }
- cfs_spin_unlock (&conn->ibc_lock);
+ kiblnd_queue_tx_locked(tx, conn);
+ }
+ spin_unlock(&conn->ibc_lock);
- kiblnd_check_sends(conn);
+ kiblnd_check_sends(conn);
- /* schedule blocked rxs */
- kiblnd_handle_early_rxs(conn);
+ /* schedule blocked rxs */
+ kiblnd_handle_early_rxs(conn);
}
void
int
kiblnd_passive_connect (struct rdma_cm_id *cmid, void *priv, int priv_nob)
{
- cfs_rwlock_t *g_lock = &kiblnd_data.kib_global_lock;
+ rwlock_t *g_lock = &kiblnd_data.kib_global_lock;
kib_msg_t *reqmsg = priv;
kib_msg_t *ackmsg;
kib_dev_t *ibdev;
int version = IBLND_MSG_VERSION;
unsigned long flags;
int rc;
-
+ struct sockaddr_in *peer_addr;
LASSERT (!cfs_in_interrupt());
/* cmid inherits 'context' from the corresponding listener id */
rej.ibr_why = IBLND_REJECT_FATAL;
rej.ibr_cp.ibcp_max_msg_size = IBLND_MSG_SIZE;
+ peer_addr = (struct sockaddr_in *)&(cmid->route.addr.dst_addr);
+ if (*kiblnd_tunables.kib_require_priv_port &&
+ ntohs(peer_addr->sin_port) >= PROT_SOCK) {
+ __u32 ip = ntohl(peer_addr->sin_addr.s_addr);
+ CERROR("Peer's port (%u.%u.%u.%u:%hu) is not privileged\n",
+ HIPQUAD(ip), ntohs(peer_addr->sin_port));
+ goto failed;
+ }
+
if (priv_nob < offsetof(kib_msg_t, ibm_type)) {
CERROR("Short connection request\n");
goto failed;
goto failed;
}
- cfs_write_lock_irqsave(g_lock, flags);
+ write_lock_irqsave(g_lock, flags);
peer2 = kiblnd_find_peer_locked(nid);
if (peer2 != NULL) {
if (peer2->ibp_incarnation != reqmsg->ibm_srcstamp ||
peer2->ibp_version != version) {
kiblnd_close_peer_conns_locked(peer2, -ESTALE);
- cfs_write_unlock_irqrestore(g_lock, flags);
+ write_unlock_irqrestore(g_lock, flags);
CWARN("Conn stale %s [old ver: %x, new ver: %x]\n",
libcfs_nid2str(nid), peer2->ibp_version, version);
/* tie-break connection race in favour of the higher NID */
if (peer2->ibp_connecting != 0 &&
nid < ni->ni_nid) {
- cfs_write_unlock_irqrestore(g_lock, flags);
+ write_unlock_irqrestore(g_lock, flags);
CWARN("Conn race %s\n", libcfs_nid2str(peer2->ibp_nid));
peer2->ibp_accepting++;
kiblnd_peer_addref(peer2);
- cfs_write_unlock_irqrestore(g_lock, flags);
+ write_unlock_irqrestore(g_lock, flags);
kiblnd_peer_decref(peer);
peer = peer2;
} else {
kiblnd_peer_addref(peer);
cfs_list_add_tail(&peer->ibp_list, kiblnd_nid2peerlist(nid));
- cfs_write_unlock_irqrestore(g_lock, flags);
+ write_unlock_irqrestore(g_lock, flags);
}
conn = kiblnd_create_conn(peer, cmid, IBLND_CONN_PASSIVE_WAIT, version);
LASSERT (conn->ibc_state == IBLND_CONN_ACTIVE_CONNECT);
LASSERT (peer->ibp_connecting > 0); /* 'conn' at least */
- cfs_write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
+ write_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
/* retry connection if it's still needed and no other connection
- * attempts (active or passive) are in progress */
- if (!cfs_list_empty(&peer->ibp_tx_queue) &&
+ * attempts (active or passive) are in progress
+ * NB: reconnect is still needed even when ibp_tx_queue is
+ * empty if ibp_version != version because reconnect may be
+ * initiated by kiblnd_query() */
+ if ((!cfs_list_empty(&peer->ibp_tx_queue) ||
+ peer->ibp_version != version) &&
peer->ibp_connecting == 1 &&
peer->ibp_accepting == 0) {
retry = 1;
peer->ibp_incarnation = incarnation;
}
- cfs_write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
+ write_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
if (!retry)
return;
break;
}
- CDEBUG(D_NETERROR, "%s: retrying (%s), %x, %x, "
- "queue_dep: %d, max_frag: %d, msg_size: %d\n",
- libcfs_nid2str(peer->ibp_nid),
- reason, IBLND_MSG_VERSION, version,
- cp != NULL ? cp->ibcp_queue_depth : IBLND_MSG_QUEUE_SIZE(version),
- cp != NULL ? cp->ibcp_max_frags : IBLND_RDMA_FRAGS(version),
- cp != NULL ? cp->ibcp_max_msg_size: IBLND_MSG_SIZE);
+ CNETERR("%s: retrying (%s), %x, %x, "
+ "queue_dep: %d, max_frag: %d, msg_size: %d\n",
+ libcfs_nid2str(peer->ibp_nid),
+ reason, IBLND_MSG_VERSION, version,
+ cp != NULL? cp->ibcp_queue_depth :IBLND_MSG_QUEUE_SIZE(version),
+ cp != NULL? cp->ibcp_max_frags : IBLND_RDMA_FRAGS(version),
+ cp != NULL? cp->ibcp_max_msg_size: IBLND_MSG_SIZE);
kiblnd_connect_peer(peer);
}
break;
case IB_CM_REJ_INVALID_SERVICE_ID:
- CDEBUG(D_NETERROR, "%s rejected: no listener at %d\n",
- libcfs_nid2str(peer->ibp_nid),
- *kiblnd_tunables.kib_service);
+ CNETERR("%s rejected: no listener at %d\n",
+ libcfs_nid2str(peer->ibp_nid),
+ *kiblnd_tunables.kib_service);
break;
case IB_CM_REJ_CONSUMER_DEFINED:
}
/* fall through */
default:
- CDEBUG(D_NETERROR, "%s rejected: reason %d, size %d\n",
- libcfs_nid2str(peer->ibp_nid), reason, priv_nob);
+ CNETERR("%s rejected: reason %d, size %d\n",
+ libcfs_nid2str(peer->ibp_nid), reason, priv_nob);
break;
}
goto failed;
}
- cfs_read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
- if (msg->ibm_dstnid == ni->ni_nid &&
- msg->ibm_dststamp == net->ibn_incarnation)
- rc = 0;
- else
- rc = -ESTALE;
- cfs_read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
+ read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
+ if (msg->ibm_dstnid == ni->ni_nid &&
+ msg->ibm_dststamp == net->ibn_incarnation)
+ rc = 0;
+ else
+ rc = -ESTALE;
+ read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
if (rc != 0) {
CERROR("Bad connection reply from %s, rc = %d, "
unsigned long flags;
int rc;
- cfs_read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
+ read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
- incarnation = peer->ibp_incarnation;
- version = (peer->ibp_version == 0) ? IBLND_MSG_VERSION : peer->ibp_version;
+ incarnation = peer->ibp_incarnation;
+ version = (peer->ibp_version == 0) ? IBLND_MSG_VERSION :
+ peer->ibp_version;
- cfs_read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
+ read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
conn = kiblnd_create_conn(peer, cmid, IBLND_CONN_ACTIVE_CONNECT, version);
if (conn == NULL) {
case RDMA_CM_EVENT_ADDR_ERROR:
peer = (kib_peer_t *)cmid->context;
- CDEBUG(D_NETERROR, "%s: ADDR ERROR %d\n",
+ CNETERR("%s: ADDR ERROR %d\n",
libcfs_nid2str(peer->ibp_nid), event->status);
kiblnd_peer_connect_failed(peer, 1, -EHOSTUNREACH);
kiblnd_peer_decref(peer);
libcfs_nid2str(peer->ibp_nid), event->status);
if (event->status != 0) {
- CDEBUG(D_NETERROR, "Can't resolve address for %s: %d\n",
- libcfs_nid2str(peer->ibp_nid), event->status);
+ CNETERR("Can't resolve address for %s: %d\n",
+ libcfs_nid2str(peer->ibp_nid), event->status);
rc = event->status;
} else {
rc = rdma_resolve_route(
case RDMA_CM_EVENT_ROUTE_ERROR:
peer = (kib_peer_t *)cmid->context;
- CDEBUG(D_NETERROR, "%s: ROUTE ERROR %d\n",
- libcfs_nid2str(peer->ibp_nid), event->status);
+ CNETERR("%s: ROUTE ERROR %d\n",
+ libcfs_nid2str(peer->ibp_nid), event->status);
kiblnd_peer_connect_failed(peer, 1, -EHOSTUNREACH);
kiblnd_peer_decref(peer);
return -EHOSTUNREACH; /* rc != 0 destroys cmid */
if (event->status == 0)
return kiblnd_active_connect(cmid);
- CDEBUG(D_NETERROR, "Can't resolve route for %s: %d\n",
+ CNETERR("Can't resolve route for %s: %d\n",
libcfs_nid2str(peer->ibp_nid), event->status);
kiblnd_peer_connect_failed(peer, 1, event->status);
kiblnd_peer_decref(peer);
conn = (kib_conn_t *)cmid->context;
LASSERT(conn->ibc_state == IBLND_CONN_ACTIVE_CONNECT ||
conn->ibc_state == IBLND_CONN_PASSIVE_WAIT);
- CDEBUG(D_NETERROR, "%s: UNREACHABLE %d\n",
+ CNETERR("%s: UNREACHABLE %d\n",
libcfs_nid2str(conn->ibc_peer->ibp_nid), event->status);
kiblnd_connreq_done(conn, -ENETDOWN);
kiblnd_conn_decref(conn);
conn = (kib_conn_t *)cmid->context;
LASSERT(conn->ibc_state == IBLND_CONN_ACTIVE_CONNECT ||
conn->ibc_state == IBLND_CONN_PASSIVE_WAIT);
- CDEBUG(D_NETERROR, "%s: CONNECT ERROR %d\n",
- libcfs_nid2str(conn->ibc_peer->ibp_nid), event->status);
+ CNETERR("%s: CONNECT ERROR %d\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid), event->status);
kiblnd_connreq_done(conn, -ENOTCONN);
kiblnd_conn_decref(conn);
return 0;
}
}
-int
-kiblnd_check_txs (kib_conn_t *conn, cfs_list_t *txs)
+static int
+kiblnd_check_txs_locked(kib_conn_t *conn, cfs_list_t *txs)
{
kib_tx_t *tx;
cfs_list_t *ttmp;
- int timed_out = 0;
-
- cfs_spin_lock(&conn->ibc_lock);
cfs_list_for_each (ttmp, txs) {
tx = cfs_list_entry (ttmp, kib_tx_t, tx_list);
}
if (cfs_time_aftereq (jiffies, tx->tx_deadline)) {
- timed_out = 1;
CERROR("Timed out tx: %s, %lu seconds\n",
kiblnd_queue2str(conn, txs),
cfs_duration_sec(jiffies - tx->tx_deadline));
- break;
+ return 1;
}
}
- cfs_spin_unlock(&conn->ibc_lock);
- return timed_out;
+ return 0;
}
-int
-kiblnd_conn_timed_out (kib_conn_t *conn)
+static int
+kiblnd_conn_timed_out_locked(kib_conn_t *conn)
{
- return kiblnd_check_txs(conn, &conn->ibc_tx_queue) ||
- kiblnd_check_txs(conn, &conn->ibc_tx_queue_rsrvd) ||
- kiblnd_check_txs(conn, &conn->ibc_tx_queue_nocred) ||
- kiblnd_check_txs(conn, &conn->ibc_active_txs);
+ return kiblnd_check_txs_locked(conn, &conn->ibc_tx_queue) ||
+ kiblnd_check_txs_locked(conn, &conn->ibc_tx_noops) ||
+ kiblnd_check_txs_locked(conn, &conn->ibc_tx_queue_rsrvd) ||
+ kiblnd_check_txs_locked(conn, &conn->ibc_tx_queue_nocred) ||
+ kiblnd_check_txs_locked(conn, &conn->ibc_active_txs);
}
void
kiblnd_check_conns (int idx)
{
- cfs_list_t *peers = &kiblnd_data.kib_peers[idx];
- cfs_list_t *ptmp;
- kib_peer_t *peer;
- kib_conn_t *conn;
- cfs_list_t *ctmp;
- unsigned long flags;
+ CFS_LIST_HEAD (closes);
+ CFS_LIST_HEAD (checksends);
+ cfs_list_t *peers = &kiblnd_data.kib_peers[idx];
+ cfs_list_t *ptmp;
+ kib_peer_t *peer;
+ kib_conn_t *conn;
+ cfs_list_t *ctmp;
+ unsigned long flags;
- again:
/* NB. We expect to have a look at all the peers and not find any
- * rdmas to time out, so we just use a shared lock while we
+ * RDMAs to time out, so we just use a shared lock while we
* take a look... */
- cfs_read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
+ read_lock_irqsave(&kiblnd_data.kib_global_lock, flags);
cfs_list_for_each (ptmp, peers) {
peer = cfs_list_entry (ptmp, kib_peer_t, ibp_list);
cfs_list_for_each (ctmp, &peer->ibp_conns) {
- conn = cfs_list_entry (ctmp, kib_conn_t, ibc_list);
+ int timedout;
+ int sendnoop;
+
+ conn = cfs_list_entry(ctmp, kib_conn_t, ibc_list);
LASSERT (conn->ibc_state == IBLND_CONN_ESTABLISHED);
- /* In case we have enough credits to return via a
- * NOOP, but there were no non-blocking tx descs
- * free to do it last time... */
- kiblnd_check_sends(conn);
+ spin_lock(&conn->ibc_lock);
- if (!kiblnd_conn_timed_out(conn))
+ sendnoop = kiblnd_need_noop(conn);
+ timedout = kiblnd_conn_timed_out_locked(conn);
+ if (!sendnoop && !timedout) {
+ spin_unlock(&conn->ibc_lock);
continue;
+ }
- /* Handle timeout by closing the whole connection. We
- * can only be sure RDMA activity has ceased once the
- * QP has been modified. */
-
- kiblnd_conn_addref(conn); /* 1 ref for me... */
-
- cfs_read_unlock_irqrestore(&kiblnd_data.kib_global_lock,
- flags);
-
- CERROR("Timed out RDMA with %s (%lu)\n",
- libcfs_nid2str(peer->ibp_nid),
- cfs_duration_sec(cfs_time_current() -
- peer->ibp_last_alive));
-
- kiblnd_close_conn(conn, -ETIMEDOUT);
- kiblnd_conn_decref(conn); /* ...until here */
-
- /* start again now I've dropped the lock */
- goto again;
- }
+ if (timedout) {
+ CERROR("Timed out RDMA with %s (%lu): "
+ "c: %u, oc: %u, rc: %u\n",
+ libcfs_nid2str(peer->ibp_nid),
+ cfs_duration_sec(cfs_time_current() -
+ peer->ibp_last_alive),
+ conn->ibc_credits,
+ conn->ibc_outstanding_credits,
+ conn->ibc_reserved_credits);
+ cfs_list_add(&conn->ibc_connd_list, &closes);
+ } else {
+ cfs_list_add(&conn->ibc_connd_list,
+ &checksends);
+ }
+ /* +ref for 'closes' or 'checksends' */
+ kiblnd_conn_addref(conn);
+
+ spin_unlock(&conn->ibc_lock);
+ }
+ }
+
+ read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
+
+ /* Handle timeout by closing the whole
+ * connection. We can only be sure RDMA activity
+ * has ceased once the QP has been modified. */
+ while (!cfs_list_empty(&closes)) {
+ conn = cfs_list_entry(closes.next,
+ kib_conn_t, ibc_connd_list);
+ cfs_list_del(&conn->ibc_connd_list);
+ kiblnd_close_conn(conn, -ETIMEDOUT);
+ kiblnd_conn_decref(conn);
}
- cfs_read_unlock_irqrestore(&kiblnd_data.kib_global_lock, flags);
+ /* In case we have enough credits to return via a
+ * NOOP, but there were no non-blocking tx descs
+ * free to do it last time... */
+ while (!cfs_list_empty(&checksends)) {
+ conn = cfs_list_entry(checksends.next,
+ kib_conn_t, ibc_connd_list);
+ cfs_list_del(&conn->ibc_connd_list);
+ kiblnd_check_sends(conn);
+ kiblnd_conn_decref(conn);
+ }
}
void
int
kiblnd_connd (void *arg)
{
- cfs_waitlink_t wait;
- unsigned long flags;
- kib_conn_t *conn;
- int timeout;
- int i;
- int dropped_lock;
- int peer_index = 0;
- unsigned long deadline = jiffies;
+ wait_queue_t wait;
+ unsigned long flags;
+ kib_conn_t *conn;
+ int timeout;
+ int i;
+ int dropped_lock;
+ int peer_index = 0;
+ unsigned long deadline = jiffies;
- cfs_daemonize ("kiblnd_connd");
- cfs_block_allsigs ();
+ cfs_block_allsigs ();
- cfs_waitlink_init (&wait);
- kiblnd_data.kib_connd = current;
+ init_waitqueue_entry_current (&wait);
+ kiblnd_data.kib_connd = current;
- cfs_spin_lock_irqsave(&kiblnd_data.kib_connd_lock, flags);
+ spin_lock_irqsave(&kiblnd_data.kib_connd_lock, flags);
while (!kiblnd_data.kib_shutdown) {
kib_conn_t, ibc_list);
cfs_list_del(&conn->ibc_list);
- cfs_spin_unlock_irqrestore (&kiblnd_data.kib_connd_lock,
- flags);
- dropped_lock = 1;
+ spin_unlock_irqrestore(&kiblnd_data.kib_connd_lock,
+ flags);
+ dropped_lock = 1;
- kiblnd_destroy_conn(conn);
+ kiblnd_destroy_conn(conn);
- cfs_spin_lock_irqsave (&kiblnd_data.kib_connd_lock,
- flags);
- }
+ spin_lock_irqsave(&kiblnd_data.kib_connd_lock, flags);
+ }
- if (!cfs_list_empty (&kiblnd_data.kib_connd_conns)) {
- conn = cfs_list_entry (kiblnd_data.kib_connd_conns.next,
- kib_conn_t, ibc_list);
- cfs_list_del(&conn->ibc_list);
+ if (!cfs_list_empty(&kiblnd_data.kib_connd_conns)) {
+ conn = cfs_list_entry(kiblnd_data.kib_connd_conns.next,
+ kib_conn_t, ibc_list);
+ cfs_list_del(&conn->ibc_list);
- cfs_spin_unlock_irqrestore (&kiblnd_data.kib_connd_lock,
- flags);
- dropped_lock = 1;
+ spin_unlock_irqrestore(&kiblnd_data.kib_connd_lock,
+ flags);
+ dropped_lock = 1;
- kiblnd_disconnect_conn(conn);
- kiblnd_conn_decref(conn);
+ kiblnd_disconnect_conn(conn);
+ kiblnd_conn_decref(conn);
- cfs_spin_lock_irqsave (&kiblnd_data.kib_connd_lock,
- flags);
+ spin_lock_irqsave(&kiblnd_data.kib_connd_lock, flags);
}
/* careful with the jiffy wrap... */
const int p = 1;
int chunk = kiblnd_data.kib_peer_hash_size;
- cfs_spin_unlock_irqrestore(&kiblnd_data.kib_connd_lock, flags);
+ spin_unlock_irqrestore(&kiblnd_data.kib_connd_lock, flags);
dropped_lock = 1;
/* Time to check for RDMA timeouts on a few more
if (chunk == 0)
chunk = 1;
- for (i = 0; i < chunk; i++) {
- kiblnd_check_conns(peer_index);
- peer_index = (peer_index + 1) %
- kiblnd_data.kib_peer_hash_size;
- }
+ for (i = 0; i < chunk; i++) {
+ kiblnd_check_conns(peer_index);
+ peer_index = (peer_index + 1) %
+ kiblnd_data.kib_peer_hash_size;
+ }
- deadline += p * CFS_HZ;
- cfs_spin_lock_irqsave(&kiblnd_data.kib_connd_lock,
- flags);
- }
+ deadline += p * HZ;
+ spin_lock_irqsave(&kiblnd_data.kib_connd_lock, flags);
+ }
- if (dropped_lock)
- continue;
+ if (dropped_lock)
+ continue;
- /* Nothing to do for 'timeout' */
- cfs_set_current_state (CFS_TASK_INTERRUPTIBLE);
- cfs_waitq_add (&kiblnd_data.kib_connd_waitq, &wait);
- cfs_spin_unlock_irqrestore (&kiblnd_data.kib_connd_lock, flags);
+ /* Nothing to do for 'timeout' */
+ set_current_state(TASK_INTERRUPTIBLE);
+ add_wait_queue(&kiblnd_data.kib_connd_waitq, &wait);
+ spin_unlock_irqrestore(&kiblnd_data.kib_connd_lock, flags);
- cfs_waitq_timedwait(&wait, CFS_TASK_INTERRUPTIBLE, timeout);
+ waitq_timedwait(&wait, TASK_INTERRUPTIBLE, timeout);
- cfs_set_current_state (CFS_TASK_RUNNING);
- cfs_waitq_del (&kiblnd_data.kib_connd_waitq, &wait);
- cfs_spin_lock_irqsave (&kiblnd_data.kib_connd_lock, flags);
- }
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&kiblnd_data.kib_connd_waitq, &wait);
+ spin_lock_irqsave(&kiblnd_data.kib_connd_lock, flags);
+ }
- cfs_spin_unlock_irqrestore (&kiblnd_data.kib_connd_lock, flags);
+ spin_unlock_irqrestore(&kiblnd_data.kib_connd_lock, flags);
- kiblnd_thread_fini();
- return (0);
+ kiblnd_thread_fini();
+ return 0;
}
void
CDEBUG(D_NET, "%s established\n",
libcfs_nid2str(conn->ibc_peer->ibp_nid));
return;
-
+
default:
CERROR("%s: Async QP event type %d\n",
libcfs_nid2str(conn->ibc_peer->ibp_nid), event->event);
* failing RDMA because 'tx' might be back on the idle list or
* even reused already if we didn't manage to post all our work
* items */
- CDEBUG(D_NETERROR, "RDMA (tx: %p) failed: %d\n",
- kiblnd_wreqid2ptr(wc->wr_id), wc->status);
+ CNETERR("RDMA (tx: %p) failed: %d\n",
+ kiblnd_wreqid2ptr(wc->wr_id), wc->status);
return;
case IBLND_WID_TX:
}
void
-kiblnd_cq_completion (struct ib_cq *cq, void *arg)
+kiblnd_cq_completion(struct ib_cq *cq, void *arg)
{
- /* NB I'm not allowed to schedule this conn once its refcount has
- * reached 0. Since fundamentally I'm racing with scheduler threads
- * consuming my CQ I could be called after all completions have
- * occurred. But in this case, ibc_nrx == 0 && ibc_nsends_posted == 0
- * and this CQ is about to be destroyed so I NOOP. */
- kib_conn_t *conn = (kib_conn_t *)arg;
- unsigned long flags;
+ /* NB I'm not allowed to schedule this conn once its refcount has
+ * reached 0. Since fundamentally I'm racing with scheduler threads
+ * consuming my CQ I could be called after all completions have
+ * occurred. But in this case, ibc_nrx == 0 && ibc_nsends_posted == 0
+ * and this CQ is about to be destroyed so I NOOP. */
+ kib_conn_t *conn = (kib_conn_t *)arg;
+ struct kib_sched_info *sched = conn->ibc_sched;
+ unsigned long flags;
- LASSERT (cq == conn->ibc_cq);
+ LASSERT(cq == conn->ibc_cq);
- cfs_spin_lock_irqsave(&kiblnd_data.kib_sched_lock, flags);
+ spin_lock_irqsave(&sched->ibs_lock, flags);
- conn->ibc_ready = 1;
+ conn->ibc_ready = 1;
- if (!conn->ibc_scheduled &&
- (conn->ibc_nrx > 0 ||
- conn->ibc_nsends_posted > 0)) {
- kiblnd_conn_addref(conn); /* +1 ref for sched_conns */
- conn->ibc_scheduled = 1;
- cfs_list_add_tail(&conn->ibc_sched_list,
- &kiblnd_data.kib_sched_conns);
- cfs_waitq_signal(&kiblnd_data.kib_sched_waitq);
- }
+ if (!conn->ibc_scheduled &&
+ (conn->ibc_nrx > 0 ||
+ conn->ibc_nsends_posted > 0)) {
+ kiblnd_conn_addref(conn); /* +1 ref for sched_conns */
+ conn->ibc_scheduled = 1;
+ cfs_list_add_tail(&conn->ibc_sched_list, &sched->ibs_conns);
+
+ if (waitqueue_active(&sched->ibs_waitq))
+ wake_up(&sched->ibs_waitq);
+ }
- cfs_spin_unlock_irqrestore(&kiblnd_data.kib_sched_lock, flags);
+ spin_unlock_irqrestore(&sched->ibs_lock, flags);
}
void
int
kiblnd_scheduler(void *arg)
{
- long id = (long)arg;
- cfs_waitlink_t wait;
- char name[16];
- unsigned long flags;
- kib_conn_t *conn;
- struct ib_wc wc;
- int rc;
- int did_something;
- int busy_loops = 0;
+ long id = (long)arg;
+ struct kib_sched_info *sched;
+ kib_conn_t *conn;
+ wait_queue_t wait;
+ unsigned long flags;
+ struct ib_wc wc;
+ int did_something;
+ int busy_loops = 0;
+ int rc;
- snprintf(name, sizeof(name), "kiblnd_sd_%02ld", id);
- cfs_daemonize(name);
- cfs_block_allsigs();
+ cfs_block_allsigs();
- cfs_waitlink_init(&wait);
+ init_waitqueue_entry_current(&wait);
- cfs_spin_lock_irqsave(&kiblnd_data.kib_sched_lock, flags);
+ sched = kiblnd_data.kib_scheds[KIB_THREAD_CPT(id)];
- while (!kiblnd_data.kib_shutdown) {
- if (busy_loops++ >= IBLND_RESCHED) {
- cfs_spin_unlock_irqrestore(&kiblnd_data.kib_sched_lock,
- flags);
+ rc = cfs_cpt_bind(lnet_cpt_table(), sched->ibs_cpt);
+ if (rc != 0) {
+ CWARN("Failed to bind on CPT %d, please verify whether "
+ "all CPUs are healthy and reload modules if necessary, "
+ "otherwise your system might under risk of low "
+ "performance\n", sched->ibs_cpt);
+ }
- cfs_cond_resched();
- busy_loops = 0;
+ spin_lock_irqsave(&sched->ibs_lock, flags);
- cfs_spin_lock_irqsave(&kiblnd_data.kib_sched_lock,
- flags);
- }
+ while (!kiblnd_data.kib_shutdown) {
+ if (busy_loops++ >= IBLND_RESCHED) {
+ spin_unlock_irqrestore(&sched->ibs_lock, flags);
+
+ cond_resched();
+ busy_loops = 0;
+
+ spin_lock_irqsave(&sched->ibs_lock, flags);
+ }
- did_something = 0;
+ did_something = 0;
- if (!cfs_list_empty(&kiblnd_data.kib_sched_conns)) {
- conn = cfs_list_entry(kiblnd_data.kib_sched_conns.next,
- kib_conn_t, ibc_sched_list);
- /* take over kib_sched_conns' ref on conn... */
- LASSERT(conn->ibc_scheduled);
- cfs_list_del(&conn->ibc_sched_list);
- conn->ibc_ready = 0;
+ if (!cfs_list_empty(&sched->ibs_conns)) {
+ conn = cfs_list_entry(sched->ibs_conns.next,
+ kib_conn_t, ibc_sched_list);
+ /* take over kib_sched_conns' ref on conn... */
+ LASSERT(conn->ibc_scheduled);
+ cfs_list_del(&conn->ibc_sched_list);
+ conn->ibc_ready = 0;
- cfs_spin_unlock_irqrestore(&kiblnd_data.kib_sched_lock,
- flags);
+ spin_unlock_irqrestore(&sched->ibs_lock, flags);
rc = ib_poll_cq(conn->ibc_cq, 1, &wc);
if (rc == 0) {
libcfs_nid2str(conn->ibc_peer->ibp_nid), rc);
kiblnd_close_conn(conn, -EIO);
kiblnd_conn_decref(conn);
- cfs_spin_lock_irqsave(&kiblnd_data. \
- kib_sched_lock,
- flags);
- continue;
- }
-
- rc = ib_poll_cq(conn->ibc_cq, 1, &wc);
+ spin_lock_irqsave(&sched->ibs_lock,
+ flags);
+ continue;
+ }
+
+ rc = ib_poll_cq(conn->ibc_cq, 1, &wc);
+ }
+
+ if (rc < 0) {
+ CWARN("%s: ib_poll_cq failed: %d, "
+ "closing connection\n",
+ libcfs_nid2str(conn->ibc_peer->ibp_nid),
+ rc);
+ kiblnd_close_conn(conn, -EIO);
+ kiblnd_conn_decref(conn);
+ spin_lock_irqsave(&sched->ibs_lock, flags);
+ continue;
+ }
+
+ spin_lock_irqsave(&sched->ibs_lock, flags);
+
+ if (rc != 0 || conn->ibc_ready) {
+ /* There may be another completion waiting; get
+ * another scheduler to check while I handle
+ * this one... */
+ /* +1 ref for sched_conns */
+ kiblnd_conn_addref(conn);
+ cfs_list_add_tail(&conn->ibc_sched_list,
+ &sched->ibs_conns);
+ if (waitqueue_active(&sched->ibs_waitq))
+ wake_up(&sched->ibs_waitq);
+ } else {
+ conn->ibc_scheduled = 0;
+ }
+
+ if (rc != 0) {
+ spin_unlock_irqrestore(&sched->ibs_lock, flags);
+ kiblnd_complete(&wc);
+
+ spin_lock_irqsave(&sched->ibs_lock, flags);
}
- if (rc < 0) {
- CWARN("%s: ib_poll_cq failed: %d, "
- "closing connection\n",
- libcfs_nid2str(conn->ibc_peer->ibp_nid),
- rc);
- kiblnd_close_conn(conn, -EIO);
- kiblnd_conn_decref(conn);
- cfs_spin_lock_irqsave(&kiblnd_data. \
- kib_sched_lock, flags);
+ kiblnd_conn_decref(conn); /* ...drop my ref from above */
+ did_something = 1;
+ }
+
+ if (did_something)
+ continue;
+
+ set_current_state(TASK_INTERRUPTIBLE);
+ add_wait_queue_exclusive(&sched->ibs_waitq, &wait);
+ spin_unlock_irqrestore(&sched->ibs_lock, flags);
+
+ waitq_wait(&wait, TASK_INTERRUPTIBLE);
+ busy_loops = 0;
+
+ remove_wait_queue(&sched->ibs_waitq, &wait);
+ set_current_state(TASK_RUNNING);
+ spin_lock_irqsave(&sched->ibs_lock, flags);
+ }
+
+ spin_unlock_irqrestore(&sched->ibs_lock, flags);
+
+ kiblnd_thread_fini();
+ return 0;
+}
+
+int
+kiblnd_failover_thread(void *arg)
+{
+ rwlock_t *glock = &kiblnd_data.kib_global_lock;
+ kib_dev_t *dev;
+ wait_queue_t wait;
+ unsigned long flags;
+ int rc;
+
+ LASSERT (*kiblnd_tunables.kib_dev_failover != 0);
+
+ cfs_block_allsigs ();
+
+ init_waitqueue_entry_current(&wait);
+ write_lock_irqsave(glock, flags);
+
+ while (!kiblnd_data.kib_shutdown) {
+ int do_failover = 0;
+ int long_sleep;
+
+ cfs_list_for_each_entry(dev, &kiblnd_data.kib_failed_devs,
+ ibd_fail_list) {
+ if (cfs_time_before(cfs_time_current(),
+ dev->ibd_next_failover))
continue;
- }
+ do_failover = 1;
+ break;
+ }
- cfs_spin_lock_irqsave(&kiblnd_data.kib_sched_lock,
- flags);
-
- if (rc != 0 || conn->ibc_ready) {
- /* There may be another completion waiting; get
- * another scheduler to check while I handle
- * this one... */
- kiblnd_conn_addref(conn); /* +1 ref for sched_conns */
- cfs_list_add_tail(&conn->ibc_sched_list,
- &kiblnd_data.kib_sched_conns);
- cfs_waitq_signal(&kiblnd_data.kib_sched_waitq);
- } else {
- conn->ibc_scheduled = 0;
- }
+ if (do_failover) {
+ cfs_list_del_init(&dev->ibd_fail_list);
+ dev->ibd_failover = 1;
+ write_unlock_irqrestore(glock, flags);
- if (rc != 0) {
- cfs_spin_unlock_irqrestore(&kiblnd_data. \
- kib_sched_lock,
- flags);
+ rc = kiblnd_dev_failover(dev);
- kiblnd_complete(&wc);
+ write_lock_irqsave(glock, flags);
- cfs_spin_lock_irqsave(&kiblnd_data. \
- kib_sched_lock,
- flags);
+ LASSERT (dev->ibd_failover);
+ dev->ibd_failover = 0;
+ if (rc >= 0) { /* Device is OK or failover succeed */
+ dev->ibd_next_failover = cfs_time_shift(3);
+ continue;
}
- kiblnd_conn_decref(conn); /* ...drop my ref from above */
- did_something = 1;
- }
+ /* failed to failover, retry later */
+ dev->ibd_next_failover =
+ cfs_time_shift(min(dev->ibd_failed_failover, 10));
+ if (kiblnd_dev_can_failover(dev)) {
+ cfs_list_add_tail(&dev->ibd_fail_list,
+ &kiblnd_data.kib_failed_devs);
+ }
- if (did_something)
continue;
+ }
+
+ /* long sleep if no more pending failover */
+ long_sleep = cfs_list_empty(&kiblnd_data.kib_failed_devs);
- cfs_set_current_state(CFS_TASK_INTERRUPTIBLE);
- cfs_waitq_add_exclusive(&kiblnd_data.kib_sched_waitq, &wait);
- cfs_spin_unlock_irqrestore(&kiblnd_data.kib_sched_lock, flags);
+ set_current_state(TASK_INTERRUPTIBLE);
+ add_wait_queue(&kiblnd_data.kib_failover_waitq, &wait);
+ write_unlock_irqrestore(glock, flags);
- cfs_waitq_wait(&wait, CFS_TASK_INTERRUPTIBLE);
- busy_loops = 0;
+ rc = schedule_timeout(long_sleep ? cfs_time_seconds(10) :
+ cfs_time_seconds(1));
+ set_current_state(TASK_RUNNING);
+ remove_wait_queue(&kiblnd_data.kib_failover_waitq, &wait);
+ write_lock_irqsave(glock, flags);
- cfs_waitq_del(&kiblnd_data.kib_sched_waitq, &wait);
- cfs_set_current_state(CFS_TASK_RUNNING);
- cfs_spin_lock_irqsave(&kiblnd_data.kib_sched_lock, flags);
+ if (!long_sleep || rc != 0)
+ continue;
+
+ /* have a long sleep, routine check all active devices,
+ * we need checking like this because if there is not active
+ * connection on the dev and no SEND from local, we may listen
+ * on wrong HCA for ever while there is a bonding failover */
+ cfs_list_for_each_entry(dev, &kiblnd_data.kib_devs, ibd_list) {
+ if (kiblnd_dev_can_failover(dev)) {
+ cfs_list_add_tail(&dev->ibd_fail_list,
+ &kiblnd_data.kib_failed_devs);
+ }
+ }
}
- cfs_spin_unlock_irqrestore(&kiblnd_data.kib_sched_lock, flags);
+ write_unlock_irqrestore(glock, flags);
kiblnd_thread_fini();
- return (0);
+ return 0;
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff