diff --git a/drivers/infiniband/core/rdma_core.c b/drivers/infiniband/core/rdma_core.c index bf8e149d31911a3463f5bf7abd704a44afaec031..e0a5e897e4b1df04425421994e6a3673271d6121 100644 --- a/drivers/infiniband/core/rdma_core.c +++ b/drivers/infiniband/core/rdma_core.c @@ -153,9 +153,9 @@ static int uverbs_destroy_uobject(struct ib_uobject *uobj, uobj->context = NULL; /* - * For DESTROY the usecnt is held write locked, the caller is expected - * to put it unlock and put the object when done with it. Only DESTROY - * can remove the IDR handle. + * For DESTROY the usecnt is not changed, the caller is expected to + * manage it via uobj_put_destroy(). Only DESTROY can remove the IDR + * handle. */ if (reason != RDMA_REMOVE_DESTROY) atomic_set(&uobj->usecnt, 0); @@ -187,7 +187,7 @@ static int uverbs_destroy_uobject(struct ib_uobject *uobj, /* * This calls uverbs_destroy_uobject() using the RDMA_REMOVE_DESTROY * sequence. It should only be used from command callbacks. On success the - * caller must pair this with rdma_lookup_put_uobject(LOOKUP_WRITE). This + * caller must pair this with uobj_put_destroy(). This * version requires the caller to have already obtained an * LOOKUP_DESTROY uobject kref. */ @@ -198,6 +198,13 @@ int uobj_destroy(struct ib_uobject *uobj, struct uverbs_attr_bundle *attrs) down_read(&ufile->hw_destroy_rwsem); + /* + * Once the uobject is destroyed by RDMA_REMOVE_DESTROY then it is left + * write locked as the callers put it back with UVERBS_LOOKUP_DESTROY. + * This is because any other concurrent thread can still see the object + * in the xarray due to RCU. Leaving it locked ensures nothing else will + * touch it. + */ ret = uverbs_try_lock_object(uobj, UVERBS_LOOKUP_WRITE); if (ret) goto out_unlock; @@ -216,7 +223,7 @@ int uobj_destroy(struct ib_uobject *uobj, struct uverbs_attr_bundle *attrs) /* * uobj_get_destroy destroys the HW object and returns a handle to the uobj * with a NULL object pointer. The caller must pair this with - * uverbs_put_destroy. + * uobj_put_destroy(). */ struct ib_uobject *__uobj_get_destroy(const struct uverbs_api_object *obj, u32 id, struct uverbs_attr_bundle *attrs) @@ -250,8 +257,7 @@ int __uobj_perform_destroy(const struct uverbs_api_object *obj, u32 id, uobj = __uobj_get_destroy(obj, id, attrs); if (IS_ERR(uobj)) return PTR_ERR(uobj); - - rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE); + uobj_put_destroy(uobj); return 0; } diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index a401931189b75b13e3a37ea5d739f36134bc9a09..44683073be0c4a7988d6f3eb917936b444470de1 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -1439,6 +1439,7 @@ struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, if (is_odp_mr(mr)) { to_ib_umem_odp(mr->umem)->private = mr; + init_waitqueue_head(&mr->q_deferred_work); atomic_set(&mr->num_deferred_work, 0); err = xa_err(xa_store(&dev->odp_mkeys, mlx5_base_mkey(mr->mmkey.key), &mr->mmkey, diff --git a/drivers/infiniband/hw/qib/qib_sysfs.c b/drivers/infiniband/hw/qib/qib_sysfs.c index 568b21eb6ea158508207275f2626e1c46cbbd892..021df0654ba757e1df63d88d89a92035f072f3ab 100644 --- a/drivers/infiniband/hw/qib/qib_sysfs.c +++ b/drivers/infiniband/hw/qib/qib_sysfs.c @@ -760,7 +760,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num, qib_dev_err(dd, "Skipping linkcontrol sysfs info, (err %d) port %u\n", ret, port_num); - goto bail; + goto bail_link; } kobject_uevent(&ppd->pport_kobj, KOBJ_ADD); @@ -770,7 +770,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num, qib_dev_err(dd, "Skipping sl2vl sysfs info, (err %d) port %u\n", ret, port_num); - goto bail_link; + goto bail_sl; } kobject_uevent(&ppd->sl2vl_kobj, KOBJ_ADD); @@ -780,7 +780,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num, qib_dev_err(dd, "Skipping diag_counters sysfs info, (err %d) port %u\n", ret, port_num); - goto bail_sl; + goto bail_diagc; } kobject_uevent(&ppd->diagc_kobj, KOBJ_ADD); @@ -793,7 +793,7 @@ int qib_create_port_files(struct ib_device *ibdev, u8 port_num, qib_dev_err(dd, "Skipping Congestion Control sysfs info, (err %d) port %u\n", ret, port_num); - goto bail_diagc; + goto bail_cc; } kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD); @@ -854,6 +854,7 @@ void qib_verbs_unregister_sysfs(struct qib_devdata *dd) &cc_table_bin_attr); kobject_put(&ppd->pport_cc_kobj); } + kobject_put(&ppd->diagc_kobj); kobject_put(&ppd->sl2vl_kobj); kobject_put(&ppd->pport_kobj); } diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c index e580ae9cc55a52143362f512e369d7717beaffe3..780fd2dfc07eb03200fede1ad914ab3900af2c87 100644 --- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c +++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_main.c @@ -829,7 +829,7 @@ static int pvrdma_pci_probe(struct pci_dev *pdev, !(pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { dev_err(&pdev->dev, "PCI BAR region not MMIO\n"); ret = -ENOMEM; - goto err_free_device; + goto err_disable_pdev; } ret = pci_request_regions(pdev, DRV_NAME); diff --git a/drivers/infiniband/ulp/ipoib/ipoib.h b/drivers/infiniband/ulp/ipoib/ipoib.h index e188a95984b5c3c38800dc8b061494be874758c8..9a3379c49541fbe51a08e49db7757cc170bdd1bf 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib.h +++ b/drivers/infiniband/ulp/ipoib/ipoib.h @@ -377,8 +377,12 @@ struct ipoib_dev_priv { struct ipoib_rx_buf *rx_ring; struct ipoib_tx_buf *tx_ring; + /* cyclic ring variables for managing tx_ring, for UD only */ unsigned int tx_head; unsigned int tx_tail; + /* cyclic ring variables for counting overall outstanding send WRs */ + unsigned int global_tx_head; + unsigned int global_tx_tail; struct ib_sge tx_sge[MAX_SKB_FRAGS + 1]; struct ib_ud_wr tx_wr; struct ib_wc send_wc[MAX_SEND_CQE]; diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c index c59e00a0881f19e6efae40145332743de8407ca7..9bf0fa30df28c9f76480bfcdf2b20846fe409864 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c @@ -756,7 +756,8 @@ void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_ return; } - if ((priv->tx_head - priv->tx_tail) == ipoib_sendq_size - 1) { + if ((priv->global_tx_head - priv->global_tx_tail) == + ipoib_sendq_size - 1) { ipoib_dbg(priv, "TX ring 0x%x full, stopping kernel net queue\n", tx->qp->qp_num); netif_stop_queue(dev); @@ -786,7 +787,7 @@ void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_ } else { netif_trans_update(dev); ++tx->tx_head; - ++priv->tx_head; + ++priv->global_tx_head; } } @@ -820,10 +821,11 @@ void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) netif_tx_lock(dev); ++tx->tx_tail; - ++priv->tx_tail; + ++priv->global_tx_tail; if (unlikely(netif_queue_stopped(dev) && - (priv->tx_head - priv->tx_tail) <= ipoib_sendq_size >> 1 && + ((priv->global_tx_head - priv->global_tx_tail) <= + ipoib_sendq_size >> 1) && test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))) netif_wake_queue(dev); @@ -1232,8 +1234,9 @@ static void ipoib_cm_tx_destroy(struct ipoib_cm_tx *p) dev_kfree_skb_any(tx_req->skb); netif_tx_lock_bh(p->dev); ++p->tx_tail; - ++priv->tx_tail; - if (unlikely(priv->tx_head - priv->tx_tail == ipoib_sendq_size >> 1) && + ++priv->global_tx_tail; + if (unlikely((priv->global_tx_head - priv->global_tx_tail) <= + ipoib_sendq_size >> 1) && netif_queue_stopped(p->dev) && test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) netif_wake_queue(p->dev); diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c index c332b47618160327966b493a7493e7006833d345..da3c5315bbb515649c7f265fe263f38cca5f9d6e 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c @@ -407,9 +407,11 @@ static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) dev_kfree_skb_any(tx_req->skb); ++priv->tx_tail; + ++priv->global_tx_tail; if (unlikely(netif_queue_stopped(dev) && - ((priv->tx_head - priv->tx_tail) <= ipoib_sendq_size >> 1) && + ((priv->global_tx_head - priv->global_tx_tail) <= + ipoib_sendq_size >> 1) && test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))) netif_wake_queue(dev); @@ -634,7 +636,8 @@ int ipoib_send(struct net_device *dev, struct sk_buff *skb, else priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM; /* increase the tx_head after send success, but use it for queue state */ - if (priv->tx_head - priv->tx_tail == ipoib_sendq_size - 1) { + if ((priv->global_tx_head - priv->global_tx_tail) == + ipoib_sendq_size - 1) { ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n"); netif_stop_queue(dev); } @@ -662,6 +665,7 @@ int ipoib_send(struct net_device *dev, struct sk_buff *skb, rc = priv->tx_head; ++priv->tx_head; + ++priv->global_tx_head; } return rc; } @@ -807,6 +811,7 @@ int ipoib_ib_dev_stop_default(struct net_device *dev) ipoib_dma_unmap_tx(priv, tx_req); dev_kfree_skb_any(tx_req->skb); ++priv->tx_tail; + ++priv->global_tx_tail; } for (i = 0; i < ipoib_recvq_size; ++i) { diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c index 81b8227214f1cf11ee622d16d3876e0eae7ed4d9..ceec24d451858adaac8c8503c5ccccb79c6a373c 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_main.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c @@ -1184,9 +1184,11 @@ static void ipoib_timeout(struct net_device *dev, unsigned int txqueue) ipoib_warn(priv, "transmit timeout: latency %d msecs\n", jiffies_to_msecs(jiffies - dev_trans_start(dev))); - ipoib_warn(priv, "queue stopped %d, tx_head %u, tx_tail %u\n", - netif_queue_stopped(dev), - priv->tx_head, priv->tx_tail); + ipoib_warn(priv, + "queue stopped %d, tx_head %u, tx_tail %u, global_tx_head %u, global_tx_tail %u\n", + netif_queue_stopped(dev), priv->tx_head, priv->tx_tail, + priv->global_tx_head, priv->global_tx_tail); + /* XXX reset QP, etc. */ } @@ -1701,7 +1703,7 @@ static int ipoib_dev_init_default(struct net_device *dev) goto out_rx_ring_cleanup; } - /* priv->tx_head, tx_tail & tx_outstanding are already 0 */ + /* priv->tx_head, tx_tail and global_tx_tail/head are already 0 */ if (ipoib_transport_dev_init(dev, priv->ca)) { pr_warn("%s: ipoib_transport_dev_init failed\n", diff --git a/include/rdma/uverbs_std_types.h b/include/rdma/uverbs_std_types.h index 1b28ce1aba07bf3b8b71a7cf5b4979b47f573672..325fdaa3bb66313ceccff78719eb4e99715ac2ae 100644 --- a/include/rdma/uverbs_std_types.h +++ b/include/rdma/uverbs_std_types.h @@ -88,7 +88,7 @@ struct ib_uobject *__uobj_get_destroy(const struct uverbs_api_object *obj, static inline void uobj_put_destroy(struct ib_uobject *uobj) { - rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_WRITE); + rdma_lookup_put_uobject(uobj, UVERBS_LOOKUP_DESTROY); } static inline void uobj_put_read(struct ib_uobject *uobj)