Index: head/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_ib.c =================================================================== --- head/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_ib.c (revision 341537) +++ head/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_ib.c (revision 341538) @@ -1,1006 +1,1030 @@ /*- * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0 * * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. * Copyright (c) 2005 Mellanox Technologies. All rights reserved. * Copyright (c) 2004, 2005 Voltaire, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include __FBSDID("$FreeBSD$"); #include "ipoib.h" #include #include #include #include #ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA static int data_debug_level; module_param(data_debug_level, int, 0644); MODULE_PARM_DESC(data_debug_level, "Enable data path debug tracing if > 0"); #endif static DEFINE_MUTEX(pkey_mutex); struct ipoib_ah *ipoib_create_ah(struct ipoib_dev_priv *priv, struct ib_pd *pd, struct ib_ah_attr *attr) { struct ipoib_ah *ah; ah = kmalloc(sizeof *ah, GFP_KERNEL); if (!ah) return NULL; ah->priv = priv; ah->last_send = 0; kref_init(&ah->ref); ah->ah = ib_create_ah(pd, attr); if (IS_ERR(ah->ah)) { kfree(ah); ah = NULL; } else ipoib_dbg(priv, "Created ah %p\n", ah->ah); return ah; } void ipoib_free_ah(struct kref *kref) { struct ipoib_ah *ah = container_of(kref, struct ipoib_ah, ref); struct ipoib_dev_priv *priv = ah->priv; unsigned long flags; spin_lock_irqsave(&priv->lock, flags); list_add_tail(&ah->list, &priv->dead_ahs); spin_unlock_irqrestore(&priv->lock, flags); } void ipoib_dma_unmap_rx(struct ipoib_dev_priv *priv, struct ipoib_rx_buf *rx_req) { struct mbuf *m; int i; for (i = 0, m = rx_req->mb; m != NULL; m = m->m_next, i++) ib_dma_unmap_single(priv->ca, rx_req->mapping[i], m->m_len, DMA_FROM_DEVICE); } void ipoib_dma_mb(struct ipoib_dev_priv *priv, struct mbuf *mb, unsigned int length) { m_adj(mb, -(mb->m_pkthdr.len - length)); } struct mbuf * ipoib_alloc_map_mb(struct ipoib_dev_priv *priv, struct ipoib_rx_buf *rx_req, int size) { struct mbuf *mb, *m; int i, j; rx_req->mb = NULL; mb = m_getm2(NULL, size, M_NOWAIT, MT_DATA, M_PKTHDR); if (mb == NULL) return (NULL); for (i = 0, m = mb; m != NULL; m = m->m_next, i++) { m->m_len = M_SIZE(m); mb->m_pkthdr.len += m->m_len; rx_req->mapping[i] = ib_dma_map_single(priv->ca, mtod(m, void *), m->m_len, DMA_FROM_DEVICE); if (unlikely(ib_dma_mapping_error(priv->ca, rx_req->mapping[i]))) goto error; } rx_req->mb = mb; return (mb); error: for (j = 0, m = mb; j < i; m = m->m_next, j++) ib_dma_unmap_single(priv->ca, rx_req->mapping[j], m->m_len, DMA_FROM_DEVICE); m_freem(mb); return (NULL); } static int ipoib_ib_post_receive(struct ipoib_dev_priv *priv, int id) { struct ipoib_rx_buf *rx_req; struct ib_recv_wr *bad_wr; struct mbuf *m; int ret; int i; rx_req = &priv->rx_ring[id]; for (m = rx_req->mb, i = 0; m != NULL; m = m->m_next, i++) { priv->rx_sge[i].addr = rx_req->mapping[i]; priv->rx_sge[i].length = m->m_len; } priv->rx_wr.num_sge = i; priv->rx_wr.wr_id = id | IPOIB_OP_RECV; ret = ib_post_recv(priv->qp, &priv->rx_wr, &bad_wr); if (unlikely(ret)) { ipoib_warn(priv, "receive failed for buf %d (%d)\n", id, ret); ipoib_dma_unmap_rx(priv, &priv->rx_ring[id]); m_freem(priv->rx_ring[id].mb); priv->rx_ring[id].mb = NULL; } return ret; } static struct mbuf * ipoib_alloc_rx_mb(struct ipoib_dev_priv *priv, int id) { return ipoib_alloc_map_mb(priv, &priv->rx_ring[id], priv->max_ib_mtu + IB_GRH_BYTES); } static int ipoib_ib_post_receives(struct ipoib_dev_priv *priv) { int i; for (i = 0; i < ipoib_recvq_size; ++i) { if (!ipoib_alloc_rx_mb(priv, i)) { ipoib_warn(priv, "failed to allocate receive buffer %d\n", i); return -ENOMEM; } if (ipoib_ib_post_receive(priv, i)) { ipoib_warn(priv, "ipoib_ib_post_receive failed for buf %d\n", i); return -EIO; } } return 0; } static void ipoib_ib_handle_rx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc) { struct ipoib_rx_buf saverx; unsigned int wr_id = wc->wr_id & ~IPOIB_OP_RECV; struct ifnet *dev = priv->dev; struct ipoib_header *eh; struct mbuf *mb; ipoib_dbg_data(priv, "recv completion: id %d, status: %d\n", wr_id, wc->status); if (unlikely(wr_id >= ipoib_recvq_size)) { ipoib_warn(priv, "recv completion event with wrid %d (> %d)\n", wr_id, ipoib_recvq_size); return; } mb = priv->rx_ring[wr_id].mb; if (unlikely(wc->status != IB_WC_SUCCESS)) { if (wc->status != IB_WC_WR_FLUSH_ERR) { ipoib_warn(priv, "failed recv event " "(status=%d, wrid=%d vend_err %x)\n", wc->status, wr_id, wc->vendor_err); goto repost; } if (mb) { ipoib_dma_unmap_rx(priv, &priv->rx_ring[wr_id]); m_freem(mb); priv->rx_ring[wr_id].mb = NULL; } return; } /* * Drop packets that this interface sent, ie multicast packets * that the HCA has replicated. */ if (wc->slid == priv->local_lid && wc->src_qp == priv->qp->qp_num) goto repost; memcpy(&saverx, &priv->rx_ring[wr_id], sizeof(saverx)); /* * If we can't allocate a new RX buffer, dump * this packet and reuse the old buffer. */ if (unlikely(!ipoib_alloc_rx_mb(priv, wr_id))) { memcpy(&priv->rx_ring[wr_id], &saverx, sizeof(saverx)); if_inc_counter(dev, IFCOUNTER_IQDROPS, 1); goto repost; } ipoib_dbg_data(priv, "received %d bytes, SLID 0x%04x\n", wc->byte_len, wc->slid); ipoib_dma_unmap_rx(priv, &saverx); ipoib_dma_mb(priv, mb, wc->byte_len); if_inc_counter(dev, IFCOUNTER_IPACKETS, 1); if_inc_counter(dev, IFCOUNTER_IBYTES, mb->m_pkthdr.len); mb->m_pkthdr.rcvif = dev; m_adj(mb, sizeof(struct ib_grh) - INFINIBAND_ALEN); eh = mtod(mb, struct ipoib_header *); bzero(eh->hwaddr, 4); /* Zero the queue pair, only dgid is in grh */ if (test_bit(IPOIB_FLAG_CSUM, &priv->flags) && likely(wc->wc_flags & IB_WC_IP_CSUM_OK)) mb->m_pkthdr.csum_flags = CSUM_IP_CHECKED | CSUM_IP_VALID; dev->if_input(dev, mb); repost: if (unlikely(ipoib_ib_post_receive(priv, wr_id))) ipoib_warn(priv, "ipoib_ib_post_receive failed " "for buf %d\n", wr_id); } int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req, int max) { struct mbuf *mb = tx_req->mb; u64 *mapping = tx_req->mapping; struct mbuf *m, *p; int error; int i; for (m = mb, p = NULL, i = 0; m != NULL; p = m, m = m->m_next, i++) { if (m->m_len != 0) continue; if (p == NULL) panic("ipoib_dma_map_tx: First mbuf empty\n"); p->m_next = m_free(m); m = p; i--; } i--; if (i >= max) { tx_req->mb = mb = m_defrag(mb, M_NOWAIT); if (mb == NULL) return -EIO; for (m = mb, i = 0; m != NULL; m = m->m_next, i++); if (i >= max) return -EIO; } error = 0; for (m = mb, i = 0; m != NULL; m = m->m_next, i++) { mapping[i] = ib_dma_map_single(ca, mtod(m, void *), m->m_len, DMA_TO_DEVICE); if (unlikely(ib_dma_mapping_error(ca, mapping[i]))) { error = -EIO; break; } } if (error) { int end; end = i; for (m = mb, i = 0; i < end; m = m->m_next, i++) ib_dma_unmap_single(ca, mapping[i], m->m_len, DMA_TO_DEVICE); } return error; } void ipoib_dma_unmap_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req) { struct mbuf *mb = tx_req->mb; u64 *mapping = tx_req->mapping; struct mbuf *m; int i; for (m = mb, i = 0; m != NULL; m = m->m_next, i++) ib_dma_unmap_single(ca, mapping[i], m->m_len, DMA_TO_DEVICE); } static void ipoib_ib_handle_tx_wc(struct ipoib_dev_priv *priv, struct ib_wc *wc) { struct ifnet *dev = priv->dev; unsigned int wr_id = wc->wr_id; struct ipoib_tx_buf *tx_req; ipoib_dbg_data(priv, "send completion: id %d, status: %d\n", wr_id, wc->status); if (unlikely(wr_id >= ipoib_sendq_size)) { ipoib_warn(priv, "send completion event with wrid %d (> %d)\n", wr_id, ipoib_sendq_size); return; } tx_req = &priv->tx_ring[wr_id]; ipoib_dma_unmap_tx(priv->ca, tx_req); if_inc_counter(dev, IFCOUNTER_OPACKETS, 1); m_freem(tx_req->mb); ++priv->tx_tail; if (unlikely(--priv->tx_outstanding == ipoib_sendq_size >> 1) && (dev->if_drv_flags & IFF_DRV_OACTIVE) && test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) dev->if_drv_flags &= ~IFF_DRV_OACTIVE; if (wc->status != IB_WC_SUCCESS && wc->status != IB_WC_WR_FLUSH_ERR) ipoib_warn(priv, "failed send event " "(status=%d, wrid=%d vend_err %x)\n", wc->status, wr_id, wc->vendor_err); } int ipoib_poll_tx(struct ipoib_dev_priv *priv) { int n, i; n = ib_poll_cq(priv->send_cq, MAX_SEND_CQE, priv->send_wc); for (i = 0; i < n; ++i) { struct ib_wc *wc = priv->send_wc + i; if (wc->wr_id & IPOIB_OP_CM) ipoib_cm_handle_tx_wc(priv, wc); else ipoib_ib_handle_tx_wc(priv, wc); } return n == MAX_SEND_CQE; } static void ipoib_poll(struct ipoib_dev_priv *priv) { int n, i; poll_more: spin_lock(&priv->drain_lock); for (;;) { n = ib_poll_cq(priv->recv_cq, IPOIB_NUM_WC, priv->ibwc); for (i = 0; i < n; i++) { struct ib_wc *wc = priv->ibwc + i; if ((wc->wr_id & IPOIB_OP_RECV) == 0) panic("ipoib_poll: Bad wr_id 0x%jX\n", (intmax_t)wc->wr_id); if (wc->wr_id & IPOIB_OP_CM) ipoib_cm_handle_rx_wc(priv, wc); else ipoib_ib_handle_rx_wc(priv, wc); } if (n != IPOIB_NUM_WC) break; } spin_unlock(&priv->drain_lock); if (ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP | IB_CQ_REPORT_MISSED_EVENTS)) goto poll_more; } void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr) { struct ipoib_dev_priv *priv = dev_ptr; ipoib_poll(priv); } static void drain_tx_cq(struct ipoib_dev_priv *priv) { struct ifnet *dev = priv->dev; spin_lock(&priv->lock); while (ipoib_poll_tx(priv)) ; /* nothing */ if (dev->if_drv_flags & IFF_DRV_OACTIVE) mod_timer(&priv->poll_timer, jiffies + 1); spin_unlock(&priv->lock); } void ipoib_send_comp_handler(struct ib_cq *cq, void *dev_ptr) { struct ipoib_dev_priv *priv = dev_ptr; mod_timer(&priv->poll_timer, jiffies); } static inline int post_send(struct ipoib_dev_priv *priv, unsigned int wr_id, struct ib_ah *address, u32 qpn, struct ipoib_tx_buf *tx_req, void *head, int hlen) { struct ib_send_wr *bad_wr; struct mbuf *mb = tx_req->mb; u64 *mapping = tx_req->mapping; struct mbuf *m; int i; for (m = mb, i = 0; m != NULL; m = m->m_next, i++) { priv->tx_sge[i].addr = mapping[i]; priv->tx_sge[i].length = m->m_len; } priv->tx_wr.wr.num_sge = i; priv->tx_wr.wr.wr_id = wr_id; priv->tx_wr.remote_qpn = qpn; priv->tx_wr.ah = address; if (head) { priv->tx_wr.mss = 0; /* XXX mb_shinfo(mb)->gso_size; */ priv->tx_wr.header = head; priv->tx_wr.hlen = hlen; priv->tx_wr.wr.opcode = IB_WR_LSO; } else priv->tx_wr.wr.opcode = IB_WR_SEND; return ib_post_send(priv->qp, &priv->tx_wr.wr, &bad_wr); } void ipoib_send(struct ipoib_dev_priv *priv, struct mbuf *mb, struct ipoib_ah *address, u32 qpn) { struct ifnet *dev = priv->dev; struct ipoib_tx_buf *tx_req; int hlen; void *phead; if (unlikely(priv->tx_outstanding > MAX_SEND_CQE)) while (ipoib_poll_tx(priv)) ; /* nothing */ m_adj(mb, sizeof (struct ipoib_pseudoheader)); if (0 /* XXX segment offload mb_is_gso(mb) */) { /* XXX hlen = mb_transport_offset(mb) + tcp_hdrlen(mb); */ phead = mtod(mb, void *); if (mb->m_len < hlen) { ipoib_warn(priv, "linear data too small\n"); if_inc_counter(dev, IFCOUNTER_OERRORS, 1); m_freem(mb); return; } m_adj(mb, hlen); } else { if (unlikely(mb->m_pkthdr.len - IPOIB_ENCAP_LEN > priv->mcast_mtu)) { ipoib_warn(priv, "packet len %d (> %d) too long to send, dropping\n", mb->m_pkthdr.len, priv->mcast_mtu); if_inc_counter(dev, IFCOUNTER_OERRORS, 1); ipoib_cm_mb_too_long(priv, mb, priv->mcast_mtu); return; } phead = NULL; hlen = 0; } ipoib_dbg_data(priv, "sending packet, length=%d address=%p qpn=0x%06x\n", mb->m_pkthdr.len, address, qpn); /* * We put the mb into the tx_ring _before_ we call post_send() * because it's entirely possible that the completion handler will * run before we execute anything after the post_send(). That * means we have to make sure everything is properly recorded and * our state is consistent before we call post_send(). */ tx_req = &priv->tx_ring[priv->tx_head & (ipoib_sendq_size - 1)]; tx_req->mb = mb; if (unlikely(ipoib_dma_map_tx(priv->ca, tx_req, IPOIB_UD_TX_SG))) { if_inc_counter(dev, IFCOUNTER_OERRORS, 1); if (tx_req->mb) m_freem(tx_req->mb); return; } if (mb->m_pkthdr.csum_flags & (CSUM_IP|CSUM_TCP|CSUM_UDP)) priv->tx_wr.wr.send_flags |= IB_SEND_IP_CSUM; else priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM; if (++priv->tx_outstanding == ipoib_sendq_size) { ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n"); if (ib_req_notify_cq(priv->send_cq, IB_CQ_NEXT_COMP)) ipoib_warn(priv, "request notify on send CQ failed\n"); dev->if_drv_flags |= IFF_DRV_OACTIVE; } if (unlikely(post_send(priv, priv->tx_head & (ipoib_sendq_size - 1), address->ah, qpn, tx_req, phead, hlen))) { ipoib_warn(priv, "post_send failed\n"); if_inc_counter(dev, IFCOUNTER_OERRORS, 1); --priv->tx_outstanding; ipoib_dma_unmap_tx(priv->ca, tx_req); m_freem(mb); if (dev->if_drv_flags & IFF_DRV_OACTIVE) dev->if_drv_flags &= ~IFF_DRV_OACTIVE; } else { address->last_send = priv->tx_head; ++priv->tx_head; } } static void __ipoib_reap_ah(struct ipoib_dev_priv *priv) { struct ipoib_ah *ah, *tah; LIST_HEAD(remove_list); unsigned long flags; spin_lock_irqsave(&priv->lock, flags); list_for_each_entry_safe(ah, tah, &priv->dead_ahs, list) if ((int) priv->tx_tail - (int) ah->last_send >= 0) { list_del(&ah->list); ib_destroy_ah(ah->ah); kfree(ah); } spin_unlock_irqrestore(&priv->lock, flags); } void ipoib_reap_ah(struct work_struct *work) { struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv, ah_reap_task.work); __ipoib_reap_ah(priv); if (!test_bit(IPOIB_STOP_REAPER, &priv->flags)) queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task, HZ); } static void ipoib_ah_dev_cleanup(struct ipoib_dev_priv *priv) { unsigned long begin; begin = jiffies; while (!list_empty(&priv->dead_ahs)) { __ipoib_reap_ah(priv); if (time_after(jiffies, begin + HZ)) { ipoib_warn(priv, "timing out; will leak address handles\n"); break; } msleep(1); } } static void ipoib_ib_tx_timer_func(unsigned long ctx) { drain_tx_cq((struct ipoib_dev_priv *)ctx); } int ipoib_ib_dev_open(struct ipoib_dev_priv *priv) { int ret; if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &priv->pkey_index)) { ipoib_warn(priv, "P_Key 0x%04x not found\n", priv->pkey); clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); return -1; } set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); ret = ipoib_init_qp(priv); if (ret) { ipoib_warn(priv, "ipoib_init_qp returned %d\n", ret); return -1; } ret = ipoib_ib_post_receives(priv); if (ret) { ipoib_warn(priv, "ipoib_ib_post_receives returned %d\n", ret); ipoib_ib_dev_stop(priv, 1); return -1; } ret = ipoib_cm_dev_open(priv); if (ret) { ipoib_warn(priv, "ipoib_cm_dev_open returned %d\n", ret); ipoib_ib_dev_stop(priv, 1); return -1; } clear_bit(IPOIB_STOP_REAPER, &priv->flags); queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task, HZ); set_bit(IPOIB_FLAG_INITIALIZED, &priv->flags); return 0; } static void ipoib_pkey_dev_check_presence(struct ipoib_dev_priv *priv) { u16 pkey_index = 0; if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); else set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); } int ipoib_ib_dev_up(struct ipoib_dev_priv *priv) { ipoib_pkey_dev_check_presence(priv); if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) { ipoib_dbg(priv, "PKEY is not assigned.\n"); return 0; } set_bit(IPOIB_FLAG_OPER_UP, &priv->flags); return ipoib_mcast_start_thread(priv); } int ipoib_ib_dev_down(struct ipoib_dev_priv *priv, int flush) { ipoib_dbg(priv, "downing ib_dev\n"); clear_bit(IPOIB_FLAG_OPER_UP, &priv->flags); if_link_state_change(priv->dev, LINK_STATE_DOWN); /* Shutdown the P_Key thread if still active */ if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) { mutex_lock(&pkey_mutex); set_bit(IPOIB_PKEY_STOP, &priv->flags); cancel_delayed_work(&priv->pkey_poll_task); mutex_unlock(&pkey_mutex); if (flush) flush_workqueue(ipoib_workqueue); } ipoib_mcast_stop_thread(priv, flush); ipoib_mcast_dev_flush(priv); ipoib_flush_paths(priv); return 0; } static int recvs_pending(struct ipoib_dev_priv *priv) { int pending = 0; int i; for (i = 0; i < ipoib_recvq_size; ++i) if (priv->rx_ring[i].mb) ++pending; return pending; } +static void check_qp_movement_and_print(struct ipoib_dev_priv *priv, + struct ib_qp *qp, + enum ib_qp_state new_state) +{ + struct ib_qp_attr qp_attr; + struct ib_qp_init_attr query_init_attr; + int ret; + + ret = ib_query_qp(qp, &qp_attr, IB_QP_STATE, &query_init_attr); + if (ret) { + ipoib_warn(priv, "%s: Failed to query QP (%d)\n", __func__, ret); + return; + } + + /* print according to the new-state and the previous state */ + if (new_state == IB_QPS_ERR && qp_attr.qp_state == IB_QPS_RESET) { + ipoib_dbg(priv, "Failed to modify QP %d->%d, acceptable\n", + qp_attr.qp_state, new_state); + } else { + ipoib_warn(priv, "Failed to modify QP %d->%d\n", + qp_attr.qp_state, new_state); + } +} + void ipoib_drain_cq(struct ipoib_dev_priv *priv) { int i, n; spin_lock(&priv->drain_lock); do { n = ib_poll_cq(priv->recv_cq, IPOIB_NUM_WC, priv->ibwc); for (i = 0; i < n; ++i) { /* * Convert any successful completions to flush * errors to avoid passing packets up the * stack after bringing the device down. */ if (priv->ibwc[i].status == IB_WC_SUCCESS) priv->ibwc[i].status = IB_WC_WR_FLUSH_ERR; if ((priv->ibwc[i].wr_id & IPOIB_OP_RECV) == 0) panic("ipoib_drain_cq: Bad wrid 0x%jX\n", (intmax_t)priv->ibwc[i].wr_id); if (priv->ibwc[i].wr_id & IPOIB_OP_CM) ipoib_cm_handle_rx_wc(priv, priv->ibwc + i); else ipoib_ib_handle_rx_wc(priv, priv->ibwc + i); } } while (n == IPOIB_NUM_WC); spin_unlock(&priv->drain_lock); spin_lock(&priv->lock); while (ipoib_poll_tx(priv)) ; /* nothing */ spin_unlock(&priv->lock); } int ipoib_ib_dev_stop(struct ipoib_dev_priv *priv, int flush) { struct ib_qp_attr qp_attr; unsigned long begin; struct ipoib_tx_buf *tx_req; int i; clear_bit(IPOIB_FLAG_INITIALIZED, &priv->flags); ipoib_cm_dev_stop(priv); /* * Move our QP to the error state and then reinitialize in * when all work requests have completed or have been flushed. */ qp_attr.qp_state = IB_QPS_ERR; if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) - ipoib_warn(priv, "Failed to modify QP to ERROR state\n"); + check_qp_movement_and_print(priv, priv->qp, IB_QPS_ERR); /* Wait for all sends and receives to complete */ begin = jiffies; while (priv->tx_head != priv->tx_tail || recvs_pending(priv)) { if (time_after(jiffies, begin + 5 * HZ)) { ipoib_warn(priv, "timing out; %d sends %d receives not completed\n", priv->tx_head - priv->tx_tail, recvs_pending(priv)); /* * assume the HW is wedged and just free up * all our pending work requests. */ while ((int) priv->tx_tail - (int) priv->tx_head < 0) { tx_req = &priv->tx_ring[priv->tx_tail & (ipoib_sendq_size - 1)]; ipoib_dma_unmap_tx(priv->ca, tx_req); m_freem(tx_req->mb); ++priv->tx_tail; --priv->tx_outstanding; } for (i = 0; i < ipoib_recvq_size; ++i) { struct ipoib_rx_buf *rx_req; rx_req = &priv->rx_ring[i]; if (!rx_req->mb) continue; ipoib_dma_unmap_rx(priv, &priv->rx_ring[i]); m_freem(rx_req->mb); rx_req->mb = NULL; } goto timeout; } ipoib_drain_cq(priv); msleep(1); } ipoib_dbg(priv, "All sends and receives done.\n"); timeout: del_timer_sync(&priv->poll_timer); qp_attr.qp_state = IB_QPS_RESET; if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) ipoib_warn(priv, "Failed to modify QP to RESET state\n"); /* Wait for all AHs to be reaped */ set_bit(IPOIB_STOP_REAPER, &priv->flags); cancel_delayed_work(&priv->ah_reap_task); if (flush) flush_workqueue(ipoib_workqueue); ipoib_ah_dev_cleanup(priv); ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP); return 0; } int ipoib_ib_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca, int port) { struct ifnet *dev = priv->dev; priv->ca = ca; priv->port = port; priv->qp = NULL; if (ipoib_transport_dev_init(priv, ca)) { printk(KERN_WARNING "%s: ipoib_transport_dev_init failed\n", ca->name); return -ENODEV; } setup_timer(&priv->poll_timer, ipoib_ib_tx_timer_func, (unsigned long) priv); if (dev->if_flags & IFF_UP) { if (ipoib_ib_dev_open(priv)) { ipoib_transport_dev_cleanup(priv); return -ENODEV; } } return 0; } static void __ipoib_ib_dev_flush(struct ipoib_dev_priv *priv, enum ipoib_flush_level level) { struct ipoib_dev_priv *cpriv; u16 new_index; mutex_lock(&priv->vlan_mutex); /* * Flush any child interfaces too -- they might be up even if * the parent is down. */ list_for_each_entry(cpriv, &priv->child_intfs, list) __ipoib_ib_dev_flush(cpriv, level); mutex_unlock(&priv->vlan_mutex); if (!test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags)) { ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_INITIALIZED not set.\n"); return; } if (!test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) { ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_ADMIN_UP not set.\n"); return; } if (level == IPOIB_FLUSH_HEAVY) { if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &new_index)) { clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); ipoib_ib_dev_down(priv, 0); ipoib_ib_dev_stop(priv, 0); if (ipoib_pkey_dev_delay_open(priv)) return; } /* restart QP only if P_Key index is changed */ if (test_and_set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags) && new_index == priv->pkey_index) { ipoib_dbg(priv, "Not flushing - P_Key index not changed.\n"); return; } priv->pkey_index = new_index; } if (level == IPOIB_FLUSH_LIGHT) { ipoib_mark_paths_invalid(priv); ipoib_mcast_dev_flush(priv); } if (level >= IPOIB_FLUSH_NORMAL) ipoib_ib_dev_down(priv, 0); if (level == IPOIB_FLUSH_HEAVY) { ipoib_ib_dev_stop(priv, 0); ipoib_ib_dev_open(priv); } /* * The device could have been brought down between the start and when * we get here, don't bring it back up if it's not configured up */ if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) { if (level >= IPOIB_FLUSH_NORMAL) ipoib_ib_dev_up(priv); ipoib_mcast_restart_task(&priv->restart_task); } } void ipoib_ib_dev_flush_light(struct work_struct *work) { struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv, flush_light); __ipoib_ib_dev_flush(priv, IPOIB_FLUSH_LIGHT); } void ipoib_ib_dev_flush_normal(struct work_struct *work) { struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv, flush_normal); __ipoib_ib_dev_flush(priv, IPOIB_FLUSH_NORMAL); } void ipoib_ib_dev_flush_heavy(struct work_struct *work) { struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv, flush_heavy); __ipoib_ib_dev_flush(priv, IPOIB_FLUSH_HEAVY); } void ipoib_ib_dev_cleanup(struct ipoib_dev_priv *priv) { ipoib_dbg(priv, "cleaning up ib_dev\n"); ipoib_mcast_stop_thread(priv, 1); ipoib_mcast_dev_flush(priv); ipoib_ah_dev_cleanup(priv); ipoib_transport_dev_cleanup(priv); } /* * Delayed P_Key Assigment Interim Support * * The following is initial implementation of delayed P_Key assigment * mechanism. It is using the same approach implemented for the multicast * group join. The single goal of this implementation is to quickly address * Bug #2507. This implementation will probably be removed when the P_Key * change async notification is available. */ void ipoib_pkey_poll(struct work_struct *work) { struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv, pkey_poll_task.work); ipoib_pkey_dev_check_presence(priv); if (test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) ipoib_open(priv); else { mutex_lock(&pkey_mutex); if (!test_bit(IPOIB_PKEY_STOP, &priv->flags)) queue_delayed_work(ipoib_workqueue, &priv->pkey_poll_task, HZ); mutex_unlock(&pkey_mutex); } } int ipoib_pkey_dev_delay_open(struct ipoib_dev_priv *priv) { /* Look for the interface pkey value in the IB Port P_Key table and */ /* set the interface pkey assigment flag */ ipoib_pkey_dev_check_presence(priv); /* P_Key value not assigned yet - start polling */ if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) { mutex_lock(&pkey_mutex); clear_bit(IPOIB_PKEY_STOP, &priv->flags); queue_delayed_work(ipoib_workqueue, &priv->pkey_poll_task, HZ); mutex_unlock(&pkey_mutex); return 1; } return 0; }