diff options
Diffstat (limited to 'drivers/infiniband/sw/rdmavt/ah.c')
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/ah.c | 102 |
1 files changed, 21 insertions, 81 deletions
diff --git a/drivers/infiniband/sw/rdmavt/ah.c b/drivers/infiniband/sw/rdmavt/ah.c index a96d4aa80ae8..56926617b064 100644 --- a/drivers/infiniband/sw/rdmavt/ah.c +++ b/drivers/infiniband/sw/rdmavt/ah.c @@ -1,48 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* - * Copyright(c) 2016 Intel Corporation. - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * BSD LICENSE - * - * 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. - * - Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * + * Copyright(c) 2016 - 2019 Intel Corporation. */ #include <linux/slab.h> @@ -66,8 +24,6 @@ int rvt_check_ah(struct ib_device *ibdev, int port_num = rdma_ah_get_port_num(ah_attr); struct ib_port_attr port_attr; struct rvt_dev_info *rdi = ib_to_rvt(ibdev); - enum rdma_link_layer link = rdma_port_get_link_layer(ibdev, port_num); - u32 dlid = rdma_ah_get_dlid(ah_attr); u8 ah_flags = rdma_ah_get_ah_flags(ah_attr); u8 static_rate = rdma_ah_get_static_rate(ah_attr); @@ -83,14 +39,6 @@ int rvt_check_ah(struct ib_device *ibdev, if ((ah_flags & IB_AH_GRH) && rdma_ah_read_grh(ah_attr)->sgid_index >= port_attr.gid_tbl_len) return -EINVAL; - if (link != IB_LINK_LAYER_ETHERNET) { - if (dlid == 0) - return -EINVAL; - if (dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE) && - dlid != be16_to_cpu(IB_LID_PERMISSIVE) && - !(ah_flags & IB_AH_GRH)) - return -EINVAL; - } if (rdi->driver_f.check_ah) return rdi->driver_f.check_ah(ibdev, ah_attr); return 0; @@ -99,67 +47,59 @@ EXPORT_SYMBOL(rvt_check_ah); /** * rvt_create_ah - create an address handle - * @pd: the protection domain - * @ah_attr: the attributes of the AH + * @ibah: the IB address handle + * @init_attr: the attributes of the AH + * @udata: pointer to user's input output buffer information. * * This may be called from interrupt context. * - * Return: newly allocated ah + * Return: 0 on success */ -struct ib_ah *rvt_create_ah(struct ib_pd *pd, - struct rdma_ah_attr *ah_attr) +int rvt_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr, + struct ib_udata *udata) { - struct rvt_ah *ah; - struct rvt_dev_info *dev = ib_to_rvt(pd->device); + struct rvt_ah *ah = ibah_to_rvtah(ibah); + struct rvt_dev_info *dev = ib_to_rvt(ibah->device); unsigned long flags; - if (rvt_check_ah(pd->device, ah_attr)) - return ERR_PTR(-EINVAL); - - ah = kmalloc(sizeof(*ah), GFP_ATOMIC); - if (!ah) - return ERR_PTR(-ENOMEM); + if (rvt_check_ah(ibah->device, init_attr->ah_attr)) + return -EINVAL; spin_lock_irqsave(&dev->n_ahs_lock, flags); if (dev->n_ahs_allocated == dev->dparms.props.max_ah) { spin_unlock_irqrestore(&dev->n_ahs_lock, flags); - kfree(ah); - return ERR_PTR(-ENOMEM); + return -ENOMEM; } dev->n_ahs_allocated++; spin_unlock_irqrestore(&dev->n_ahs_lock, flags); - ah->attr = *ah_attr; - atomic_set(&ah->refcount, 0); + rdma_copy_ah_attr(&ah->attr, init_attr->ah_attr); if (dev->driver_f.notify_new_ah) - dev->driver_f.notify_new_ah(pd->device, ah_attr, ah); + dev->driver_f.notify_new_ah(ibah->device, + init_attr->ah_attr, ah); - return &ah->ibah; + return 0; } /** - * rvt_destory_ah - Destory an address handle + * rvt_destroy_ah - Destroy an address handle * @ibah: address handle - * + * @destroy_flags: destroy address handle flags (see enum rdma_destroy_ah_flags) * Return: 0 on success */ -int rvt_destroy_ah(struct ib_ah *ibah) +int rvt_destroy_ah(struct ib_ah *ibah, u32 destroy_flags) { struct rvt_dev_info *dev = ib_to_rvt(ibah->device); struct rvt_ah *ah = ibah_to_rvtah(ibah); unsigned long flags; - if (atomic_read(&ah->refcount) != 0) - return -EBUSY; - spin_lock_irqsave(&dev->n_ahs_lock, flags); dev->n_ahs_allocated--; spin_unlock_irqrestore(&dev->n_ahs_lock, flags); - kfree(ah); - + rdma_destroy_ah_attr(&ah->attr); return 0; } |