/* * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. * Copyright (c) 2004 Infinicon Corporation. All rights reserved. * Copyright (c) 2004 Intel Corporation. All rights reserved. * Copyright (c) 2004 Topspin Corporation. All rights reserved. * Copyright (c) 2004 Voltaire Corporation. All rights reserved. * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. * Copyright (c) 2005, 2006 Cisco Systems. 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 #include #include #include #include #include #include #include int ib_rate_to_mult(enum ib_rate rate) { switch (rate) { case IB_RATE_2_5_GBPS: return 1; case IB_RATE_5_GBPS: return 2; case IB_RATE_10_GBPS: return 4; case IB_RATE_20_GBPS: return 8; case IB_RATE_30_GBPS: return 12; case IB_RATE_40_GBPS: return 16; case IB_RATE_60_GBPS: return 24; case IB_RATE_80_GBPS: return 32; case IB_RATE_120_GBPS: return 48; default: return -1; } } EXPORT_SYMBOL(ib_rate_to_mult); enum ib_rate mult_to_ib_rate(int mult) { switch (mult) { case 1: return IB_RATE_2_5_GBPS; case 2: return IB_RATE_5_GBPS; case 4: return IB_RATE_10_GBPS; case 8: return IB_RATE_20_GBPS; case 12: return IB_RATE_30_GBPS; case 16: return IB_RATE_40_GBPS; case 24: return IB_RATE_60_GBPS; case 32: return IB_RATE_80_GBPS; case 48: return IB_RATE_120_GBPS; default: return IB_RATE_PORT_CURRENT; } } EXPORT_SYMBOL(mult_to_ib_rate); int ib_rate_to_mbps(enum ib_rate rate) { switch (rate) { case IB_RATE_2_5_GBPS: return 2500; case IB_RATE_5_GBPS: return 5000; case IB_RATE_10_GBPS: return 10000; case IB_RATE_20_GBPS: return 20000; case IB_RATE_30_GBPS: return 30000; case IB_RATE_40_GBPS: return 40000; case IB_RATE_60_GBPS: return 60000; case IB_RATE_80_GBPS: return 80000; case IB_RATE_120_GBPS: return 120000; case IB_RATE_14_GBPS: return 14062; case IB_RATE_56_GBPS: return 56250; case IB_RATE_112_GBPS: return 112500; case IB_RATE_168_GBPS: return 168750; case IB_RATE_25_GBPS: return 25781; case IB_RATE_100_GBPS: return 103125; case IB_RATE_200_GBPS: return 206250; case IB_RATE_300_GBPS: return 309375; default: return -1; } } EXPORT_SYMBOL(ib_rate_to_mbps); enum rdma_transport_type rdma_node_get_transport(enum rdma_node_type node_type) { switch (node_type) { case RDMA_NODE_IB_CA: case RDMA_NODE_IB_SWITCH: case RDMA_NODE_IB_ROUTER: return RDMA_TRANSPORT_IB; case RDMA_NODE_RNIC: return RDMA_TRANSPORT_IWARP; case RDMA_NODE_USNIC: return RDMA_TRANSPORT_USNIC; default: BUG(); return 0; } } EXPORT_SYMBOL(rdma_node_get_transport); enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, u8 port_num) { if (device->get_link_layer) return device->get_link_layer(device, port_num); switch (rdma_node_get_transport(device->node_type)) { case RDMA_TRANSPORT_IB: return IB_LINK_LAYER_INFINIBAND; case RDMA_TRANSPORT_IWARP: case RDMA_TRANSPORT_USNIC: return IB_LINK_LAYER_ETHERNET; default: return IB_LINK_LAYER_UNSPECIFIED; } } EXPORT_SYMBOL(rdma_port_get_link_layer); /* Protection domains */ struct ib_pd *ib_alloc_pd(struct ib_device *device) { struct ib_pd *pd; pd = device->alloc_pd(device, NULL, NULL); if (!IS_ERR(pd)) { pd->device = device; pd->uobject = NULL; atomic_set(&pd->usecnt, 0); } return pd; } EXPORT_SYMBOL(ib_alloc_pd); int ib_dealloc_pd(struct ib_pd *pd) { if (atomic_read(&pd->usecnt)) return -EBUSY; return pd->device->dealloc_pd(pd); } EXPORT_SYMBOL(ib_dealloc_pd); /* Address handles */ struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) { struct ib_ah *ah; ah = pd->device->create_ah(pd, ah_attr); if (!IS_ERR(ah)) { ah->device = pd->device; ah->pd = pd; ah->uobject = NULL; atomic_inc(&pd->usecnt); } return ah; } EXPORT_SYMBOL(ib_create_ah); int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, struct ib_grh *grh, struct ib_ah_attr *ah_attr) { u32 flow_class; u16 gid_index; int ret; int is_eth = (rdma_port_get_link_layer(device, port_num) == IB_LINK_LAYER_ETHERNET); memset(ah_attr, 0, sizeof *ah_attr); if (is_eth) { if (!(wc->wc_flags & IB_WC_GRH)) return -EPROTOTYPE; if (wc->wc_flags & IB_WC_WITH_SMAC && wc->wc_flags & IB_WC_WITH_VLAN) { memcpy(ah_attr->dmac, wc->smac, ETH_ALEN); ah_attr->vlan_id = wc->vlan_id; } else { ret = rdma_addr_find_dmac_by_grh(&grh->dgid, &grh->sgid, ah_attr->dmac, &ah_attr->vlan_id); if (ret) return ret; } } else { ah_attr->vlan_id = 0xffff; } ah_attr->dlid = wc->slid; ah_attr->sl = wc->sl; ah_attr->src_path_bits = wc->dlid_path_bits; ah_attr->port_num = port_num; if (wc->wc_flags & IB_WC_GRH) { ah_attr->ah_flags = IB_AH_GRH; ah_attr->grh.dgid = grh->sgid; ret = ib_find_cached_gid(device, &grh->dgid, &port_num, &gid_index); if (ret) return ret; ah_attr->grh.sgid_index = (u8) gid_index; flow_class = be32_to_cpu(grh->version_tclass_flow); ah_attr->grh.flow_label = flow_class & 0xFFFFF; ah_attr->grh.hop_limit = 0xFF; ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF; } return 0; } EXPORT_SYMBOL(ib_init_ah_from_wc); struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, struct ib_grh *grh, u8 port_num) { struct ib_ah_attr ah_attr; int ret; ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); if (ret) return ERR_PTR(ret); return ib_create_ah(pd, &ah_attr); } EXPORT_SYMBOL(ib_create_ah_from_wc); int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) { return ah->device->modify_ah ? ah->device->modify_ah(ah, ah_attr) : -ENOSYS; } EXPORT_SYMBOL(ib_modify_ah); int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) { return ah->device->query_ah ? ah->device->query_ah(ah, ah_attr) : -ENOSYS; } EXPORT_SYMBOL(ib_query_ah); int ib_destroy_ah(struct ib_ah *ah) { struct ib_pd *pd; int ret; pd = ah->pd; ret = ah->device->destroy_ah(ah); if (!ret) atomic_dec(&pd->usecnt); return ret; } EXPORT_SYMBOL(ib_destroy_ah); /* Shared receive queues */ struct ib_srq *ib_create_srq(struct ib_pd *pd, struct ib_srq_init_attr *srq_init_attr) { struct ib_srq *srq; if (!pd->device->create_srq) return ERR_PTR(-ENOSYS); srq = pd->device->create_srq(pd, srq_init_attr, NULL); if (!IS_ERR(srq)) { srq->device = pd->device; srq->pd = pd; srq->uobject = NULL; srq->event_handler = srq_init_attr->event_handler; srq->srq_context = srq_init_attr->srq_context; srq->srq_type = srq_init_attr->srq_type; if (srq->srq_type == IB_SRQT_XRC) { srq->ext.xrc.xrcd = srq_init_attr->ext.xrc.xrcd; srq->ext.xrc.cq = srq_init_attr->ext.xrc.cq; atomic_inc(&srq->ext.xrc.xrcd->usecnt); atomic_inc(&srq->ext.xrc.cq->usecnt); } atomic_inc(&pd->usecnt); atomic_set(&srq->usecnt, 0); } return srq; } EXPORT_SYMBOL(ib_create_srq); int ib_modify_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr, enum ib_srq_attr_mask srq_attr_mask) { return srq->device->modify_srq ? srq->device->modify_srq(srq, srq_attr, srq_attr_mask, NULL) : -ENOSYS; } EXPORT_SYMBOL(ib_modify_srq); int ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr) { return srq->device->query_srq ? srq->device->query_srq(srq, srq_attr) : -ENOSYS; } EXPORT_SYMBOL(ib_query_srq); int ib_destroy_srq(struct ib_srq *srq) { struct ib_pd *pd; enum ib_srq_type srq_type; struct ib_xrcd *uninitialized_var(xrcd); struct ib_cq *uninitialized_var(cq); int ret; if (atomic_read(&srq->usecnt)) return -EBUSY; pd = srq->pd; srq_type = srq->srq_type; if (srq_type == IB_SRQT_XRC) { xrcd = srq->ext.xrc.xrcd; cq = srq->ext.xrc.cq; } ret = srq->device->destroy_srq(srq); if (!ret) { atomic_dec(&pd->usecnt); if (srq_type == IB_SRQT_XRC) { atomic_dec(&xrcd->usecnt); atomic_dec(&cq->usecnt); } } return ret; } EXPORT_SYMBOL(ib_destroy_srq); /* Queue pairs */ static void __ib_shared_qp_event_handler(struct ib_event *event, void *context) { struct ib_qp *qp = context; unsigned long flags; spin_lock_irqsave(&qp->device->event_handler_lock, flags); list_for_each_entry(event->element.qp, &qp->open_list, open_list) if (event->element.qp->event_handler) event->element.qp->event_handler(event, event->element.qp->qp_context); spin_unlock_irqrestore(&qp->device->event_handler_lock, flags); } static void __ib_insert_xrcd_qp(struct ib_xrcd *xrcd, struct ib_qp *qp) { mutex_lock(&xrcd->tgt_qp_mutex); list_add(&qp->xrcd_list, &xrcd->tgt_qp_list); mutex_unlock(&xrcd->tgt_qp_mutex); } static struct ib_qp *__ib_open_qp(struct ib_qp *real_qp, void (*event_handler)(struct ib_event *, void *), void *qp_context) { struct ib_qp *qp; unsigned long flags; qp = kzalloc(sizeof *qp, GFP_KERNEL); if (!qp) return ERR_PTR(-ENOMEM); qp->real_qp = real_qp; atomic_inc(&real_qp->usecnt); qp->device = real_qp->device; qp->event_handler = event_handler; qp->qp_context = qp_context; qp->qp_num = real_qp->qp_num; qp->qp_type = real_qp->qp_type; spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); list_add(&qp->open_list, &real_qp->open_list); spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); return qp; } struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, struct ib_qp_open_attr *qp_open_attr) { struct ib_qp *qp, *real_qp; if (qp_open_attr->qp_type != IB_QPT_XRC_TGT) return ERR_PTR(-EINVAL); qp = ERR_PTR(-EINVAL); mutex_lock(&xrcd->tgt_qp_mutex); list_for_each_entry(real_qp, &xrcd->tgt_qp_list, xrcd_list) { if (real_qp->qp_num == qp_open_attr->qp_num) { qp = __ib_open_qp(real_qp, qp_open_attr->event_handler, qp_open_attr->qp_context); break; } } mutex_unlock(&xrcd->tgt_qp_mutex); return qp; } EXPORT_SYMBOL(ib_open_qp); struct ib_qp *ib_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *qp_init_attr) { struct ib_qp *qp, *real_qp; struct ib_device *device; device = pd ? pd->device : qp_init_attr->xrcd->device; qp = device->create_qp(pd, qp_init_attr, NULL); if (!IS_ERR(qp)) { qp->device = device; qp->real_qp = qp; qp->uobject = NULL; qp->qp_type = qp_init_attr->qp_type; atomic_set(&qp->usecnt, 0); if (qp_init_attr->qp_type == IB_QPT_XRC_TGT) { qp->event_handler = __ib_shared_qp_event_handler; qp->qp_context = qp; qp->pd = NULL; qp->send_cq = qp->recv_cq = NULL; qp->srq = NULL; qp->xrcd = qp_init_attr->xrcd; atomic_inc(&qp_init_attr->xrcd->usecnt); INIT_LIST_HEAD(&qp->open_list); real_qp = qp; qp = __ib_open_qp(real_qp, qp_init_attr->event_handler, qp_init_attr->qp_context); if (!IS_ERR(qp)) __ib_insert_xrcd_qp(qp_init_attr->xrcd, real_qp); else real_qp->device->destroy_qp(real_qp); } else { qp->event_handler = qp_init_attr->event_handler; qp->qp_context = qp_init_attr->qp_context; if (qp_init_attr->qp_type == IB_QPT_XRC_INI) { qp->recv_cq = NULL; qp->srq = NULL; } else { qp->recv_cq = qp_init_attr->recv_cq; atomic_inc(&qp_init_attr->recv_cq->usecnt); qp->srq = qp_init_attr->srq; if (qp->srq) atomic_inc(&qp_init_attr->srq->usecnt); } qp->pd = pd; qp->send_cq = qp_init_attr->send_cq; qp->xrcd = NULL; atomic_inc(&pd->usecnt); atomic_inc(&qp_init_attr->send_cq->usecnt); } } return qp; } EXPORT_SYMBOL(ib_create_qp); static const struct { int valid; enum ib_qp_attr_mask req_param[IB_QPT_MAX]; enum ib_qp_attr_mask req_param_add_eth[IB_QPT_MAX]; enum ib_qp_attr_mask opt_param[IB_QPT_MAX]; enum ib_qp_attr_mask opt_param_add_eth[IB_QPT_MAX]; } qp_state_table[IB_QPS_ERR + 1][IB_QPS_ERR + 1] = { [IB_QPS_RESET] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_INIT] = { .valid = 1, .req_param = { [IB_QPT_UD] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_QKEY), [IB_QPT_RAW_PACKET] = IB_QP_PORT, [IB_QPT_UC] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), [IB_QPT_RC] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), } }, }, [IB_QPS_INIT] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 }, [IB_QPS_INIT] = { .valid = 1, .opt_param = { [IB_QPT_UD] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_QKEY), [IB_QPT_UC] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), [IB_QPT_RC] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), [IB_QPT_XRC_INI] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), [IB_QPT_XRC_TGT] = (IB_QP_PKEY_INDEX | IB_QP_PORT | IB_QP_ACCESS_FLAGS), [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), } }, [IB_QPS_RTR] = { .valid = 1, .req_param = { [IB_QPT_UC] = (IB_QP_AV | IB_QP_PATH_MTU | IB_QP_DEST_QPN | IB_QP_RQ_PSN), [IB_QPT_RC] = (IB_QP_AV | IB_QP_PATH_MTU | IB_QP_DEST_QPN | IB_QP_RQ_PSN | IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER), [IB_QPT_XRC_INI] = (IB_QP_AV | IB_QP_PATH_MTU | IB_QP_DEST_QPN | IB_QP_RQ_PSN), [IB_QPT_XRC_TGT] = (IB_QP_AV | IB_QP_PATH_MTU | IB_QP_DEST_QPN | IB_QP_RQ_PSN | IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_MIN_RNR_TIMER), }, .req_param_add_eth = { [IB_QPT_RC] = (IB_QP_SMAC), [IB_QPT_UC] = (IB_QP_SMAC), [IB_QPT_XRC_INI] = (IB_QP_SMAC), [IB_QPT_XRC_TGT] = (IB_QP_SMAC) }, .opt_param = { [IB_QPT_UD] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), [IB_QPT_UC] = (IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX), [IB_QPT_RC] = (IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX), [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX), [IB_QPT_XRC_TGT] = (IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX), [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), }, .opt_param_add_eth = { [IB_QPT_RC] = (IB_QP_ALT_SMAC | IB_QP_VID | IB_QP_ALT_VID), [IB_QPT_UC] = (IB_QP_ALT_SMAC | IB_QP_VID | IB_QP_ALT_VID), [IB_QPT_XRC_INI] = (IB_QP_ALT_SMAC | IB_QP_VID | IB_QP_ALT_VID), [IB_QPT_XRC_TGT] = (IB_QP_ALT_SMAC | IB_QP_VID | IB_QP_ALT_VID) } } }, [IB_QPS_RTR] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 }, [IB_QPS_RTS] = { .valid = 1, .req_param = { [IB_QPT_UD] = IB_QP_SQ_PSN, [IB_QPT_UC] = IB_QP_SQ_PSN, [IB_QPT_RC] = (IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY | IB_QP_SQ_PSN | IB_QP_MAX_QP_RD_ATOMIC), [IB_QPT_XRC_INI] = (IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY | IB_QP_SQ_PSN | IB_QP_MAX_QP_RD_ATOMIC), [IB_QPT_XRC_TGT] = (IB_QP_TIMEOUT | IB_QP_SQ_PSN), [IB_QPT_SMI] = IB_QP_SQ_PSN, [IB_QPT_GSI] = IB_QP_SQ_PSN, }, .opt_param = { [IB_QPT_UD] = (IB_QP_CUR_STATE | IB_QP_QKEY), [IB_QPT_UC] = (IB_QP_CUR_STATE | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PATH_MIG_STATE), [IB_QPT_RC] = (IB_QP_CUR_STATE | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_MIN_RNR_TIMER | IB_QP_PATH_MIG_STATE), [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PATH_MIG_STATE), [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_MIN_RNR_TIMER | IB_QP_PATH_MIG_STATE), [IB_QPT_SMI] = (IB_QP_CUR_STATE | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_CUR_STATE | IB_QP_QKEY), } } }, [IB_QPS_RTS] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 }, [IB_QPS_RTS] = { .valid = 1, .opt_param = { [IB_QPT_UD] = (IB_QP_CUR_STATE | IB_QP_QKEY), [IB_QPT_UC] = (IB_QP_CUR_STATE | IB_QP_ACCESS_FLAGS | IB_QP_ALT_PATH | IB_QP_PATH_MIG_STATE), [IB_QPT_RC] = (IB_QP_CUR_STATE | IB_QP_ACCESS_FLAGS | IB_QP_ALT_PATH | IB_QP_PATH_MIG_STATE | IB_QP_MIN_RNR_TIMER), [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | IB_QP_ACCESS_FLAGS | IB_QP_ALT_PATH | IB_QP_PATH_MIG_STATE), [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | IB_QP_ACCESS_FLAGS | IB_QP_ALT_PATH | IB_QP_PATH_MIG_STATE | IB_QP_MIN_RNR_TIMER), [IB_QPT_SMI] = (IB_QP_CUR_STATE | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_CUR_STATE | IB_QP_QKEY), } }, [IB_QPS_SQD] = { .valid = 1, .opt_param = { [IB_QPT_UD] = IB_QP_EN_SQD_ASYNC_NOTIFY, [IB_QPT_UC] = IB_QP_EN_SQD_ASYNC_NOTIFY, [IB_QPT_RC] = IB_QP_EN_SQD_ASYNC_NOTIFY, [IB_QPT_XRC_INI] = IB_QP_EN_SQD_ASYNC_NOTIFY, [IB_QPT_XRC_TGT] = IB_QP_EN_SQD_ASYNC_NOTIFY, /* ??? */ [IB_QPT_SMI] = IB_QP_EN_SQD_ASYNC_NOTIFY, [IB_QPT_GSI] = IB_QP_EN_SQD_ASYNC_NOTIFY } }, }, [IB_QPS_SQD] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 }, [IB_QPS_RTS] = { .valid = 1, .opt_param = { [IB_QPT_UD] = (IB_QP_CUR_STATE | IB_QP_QKEY), [IB_QPT_UC] = (IB_QP_CUR_STATE | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PATH_MIG_STATE), [IB_QPT_RC] = (IB_QP_CUR_STATE | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_MIN_RNR_TIMER | IB_QP_PATH_MIG_STATE), [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PATH_MIG_STATE), [IB_QPT_XRC_TGT] = (IB_QP_CUR_STATE | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_MIN_RNR_TIMER | IB_QP_PATH_MIG_STATE), [IB_QPT_SMI] = (IB_QP_CUR_STATE | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_CUR_STATE | IB_QP_QKEY), } }, [IB_QPS_SQD] = { .valid = 1, .opt_param = { [IB_QPT_UD] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), [IB_QPT_UC] = (IB_QP_AV | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_PATH_MIG_STATE), [IB_QPT_RC] = (IB_QP_PORT | IB_QP_AV | IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY | IB_QP_MAX_QP_RD_ATOMIC | IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_MIN_RNR_TIMER | IB_QP_PATH_MIG_STATE), [IB_QPT_XRC_INI] = (IB_QP_PORT | IB_QP_AV | IB_QP_TIMEOUT | IB_QP_RETRY_CNT | IB_QP_RNR_RETRY | IB_QP_MAX_QP_RD_ATOMIC | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_PATH_MIG_STATE), [IB_QPT_XRC_TGT] = (IB_QP_PORT | IB_QP_AV | IB_QP_TIMEOUT | IB_QP_MAX_DEST_RD_ATOMIC | IB_QP_ALT_PATH | IB_QP_ACCESS_FLAGS | IB_QP_PKEY_INDEX | IB_QP_MIN_RNR_TIMER | IB_QP_PATH_MIG_STATE), [IB_QPT_SMI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_PKEY_INDEX | IB_QP_QKEY), } } }, [IB_QPS_SQE] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 }, [IB_QPS_RTS] = { .valid = 1, .opt_param = { [IB_QPT_UD] = (IB_QP_CUR_STATE | IB_QP_QKEY), [IB_QPT_UC] = (IB_QP_CUR_STATE | IB_QP_ACCESS_FLAGS), [IB_QPT_SMI] = (IB_QP_CUR_STATE | IB_QP_QKEY), [IB_QPT_GSI] = (IB_QP_CUR_STATE | IB_QP_QKEY), } } }, [IB_QPS_ERR] = { [IB_QPS_RESET] = { .valid = 1 }, [IB_QPS_ERR] = { .valid = 1 } } }; int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, enum ib_qp_type type, enum ib_qp_attr_mask mask, enum rdma_link_layer ll) { enum ib_qp_attr_mask req_param, opt_param; if (cur_state < 0 || cur_state > IB_QPS_ERR || next_state < 0 || next_state > IB_QPS_ERR) return 0; if (mask & IB_QP_CUR_STATE && cur_state != IB_QPS_RTR && cur_state != IB_QPS_RTS && cur_state != IB_QPS_SQD && cur_state != IB_QPS_SQE) return 0; if (!qp_state_table[cur_state][next_state].valid) return 0; req_param = qp_state_table[cur_state][next_state].req_param[type]; opt_param = qp_state_table[cur_state][next_state].opt_param[type]; if (ll == IB_LINK_LAYER_ETHERNET) { req_param |= qp_state_table[cur_state][next_state]. req_param_add_eth[type]; opt_param |= qp_state_table[cur_state][next_state]. opt_param_add_eth[type]; } if ((mask & req_param) != req_param) return 0; if (mask & ~(req_param | opt_param | IB_QP_STATE)) return 0; return 1; } EXPORT_SYMBOL(ib_modify_qp_is_ok); int ib_modify_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, int qp_attr_mask) { return qp->device->modify_qp(qp->real_qp, qp_attr, qp_attr_mask, NULL); } EXPORT_SYMBOL(ib_modify_qp); int ib_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr, int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr) { return qp->device->query_qp ? qp->device->query_qp(qp->real_qp, qp_attr, qp_attr_mask, qp_init_attr) : -ENOSYS; } EXPORT_SYMBOL(ib_query_qp); int ib_close_qp(struct ib_qp *qp) { struct ib_qp *real_qp; unsigned long flags; real_qp = qp->real_qp; if (real_qp == qp) return -EINVAL; spin_lock_irqsave(&real_qp->device->event_handler_lock, flags); list_del(&qp->open_list); spin_unlock_irqrestore(&real_qp->device->event_handler_lock, flags); atomic_dec(&real_qp->usecnt); kfree(qp); return 0; } EXPORT_SYMBOL(ib_close_qp); static int __ib_destroy_shared_qp(struct ib_qp *qp) { struct ib_xrcd *xrcd; struct ib_qp *real_qp; int ret; real_qp = qp->real_qp; xrcd = real_qp->xrcd; mutex_lock(&xrcd->tgt_qp_mutex); ib_close_qp(qp); if (atomic_read(&real_qp->usecnt) == 0) list_del(&real_qp->xrcd_list); else real_qp = NULL; mutex_unlock(&xrcd->tgt_qp_mutex); if (real_qp) { ret = ib_destroy_qp(real_qp); if (!ret) atomic_dec(&xrcd->usecnt); else __ib_insert_xrcd_qp(xrcd, real_qp); } return 0; } int ib_destroy_qp(struct ib_qp *qp) { struct ib_pd *pd; struct ib_cq *scq, *rcq; struct ib_srq *srq; int ret; if (atomic_read(&qp->usecnt)) return -EBUSY; if (qp->real_qp != qp) return __ib_destroy_shared_qp(qp); pd = qp->pd; scq = qp->send_cq; rcq = qp->recv_cq; srq = qp->srq; ret = qp->device->destroy_qp(qp); if (!ret) { if (pd) atomic_dec(&pd->usecnt); if (scq) atomic_dec(&scq->usecnt); if (rcq) atomic_dec(&rcq->usecnt); if (srq) atomic_dec(&srq->usecnt); } return ret; } EXPORT_SYMBOL(ib_destroy_qp); /* Completion queues */ struct ib_cq *ib_create_cq(struct ib_device *device, ib_comp_handler comp_handler, void (*event_handler)(struct ib_event *, void *), void *cq_context, int cqe, int comp_vector) { struct ib_cq *cq; cq = device->create_cq(device, cqe, comp_vector, NULL, NULL); if (!IS_ERR(cq)) { cq->device = device; cq->uobject = NULL; cq->comp_handler = comp_handler; cq->event_handler = event_handler; cq->cq_context = cq_context; atomic_set(&cq->usecnt, 0); } return cq; } EXPORT_SYMBOL(ib_create_cq); int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period) { return cq->device->modify_cq ? cq->device->modify_cq(cq, cq_count, cq_period) : -ENOSYS; } EXPORT_SYMBOL(ib_modify_cq); int ib_destroy_cq(struct ib_cq *cq) { if (atomic_read(&cq->usecnt)) return -EBUSY; return cq->device->destroy_cq(cq); } EXPORT_SYMBOL(ib_destroy_cq); int ib_resize_cq(struct ib_cq *cq, int cqe) { return cq->device->resize_cq ? cq->device->resize_cq(cq, cqe, NULL) : -ENOSYS; } EXPORT_SYMBOL(ib_resize_cq); /* Memory regions */ struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags) { struct ib_mr *mr; int err; err = ib_check_mr_access(mr_access_flags); if (err) return ERR_PTR(err); mr = pd->device->get_dma_mr(pd, mr_access_flags); if (!IS_ERR(mr)) { mr->device = pd->device; mr->pd = pd; mr->uobject = NULL; atomic_inc(&pd->usecnt); atomic_set(&mr->usecnt, 0); } return mr; } EXPORT_SYMBOL(ib_get_dma_mr); struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, struct ib_phys_buf *phys_buf_array, int num_phys_buf, int mr_access_flags, u64 *iova_start) { struct ib_mr *mr; int err; err = ib_check_mr_access(mr_access_flags); if (err) return ERR_PTR(err); if (!pd->device->reg_phys_mr) return ERR_PTR(-ENOSYS); mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf, mr_access_flags, iova_start); if (!IS_ERR(mr)) { mr->device = pd->device; mr->pd = pd; mr->uobject = NULL; atomic_inc(&pd->usecnt); atomic_set(&mr->usecnt, 0); } return mr; } EXPORT_SYMBOL(ib_reg_phys_mr); int ib_rereg_phys_mr(struct ib_mr *mr, int mr_rereg_mask, struct ib_pd *pd, struct ib_phys_buf *phys_buf_array, int num_phys_buf, int mr_access_flags, u64 *iova_start) { struct ib_pd *old_pd; int ret; ret = ib_check_mr_access(mr_access_flags); if (ret) return ret; if (!mr->device->rereg_phys_mr) return -ENOSYS; if (atomic_read(&mr->usecnt)) return -EBUSY; old_pd = mr->pd; ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd, phys_buf_array, num_phys_buf, mr_access_flags, iova_start); if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) { atomic_dec(&old_pd->usecnt); atomic_inc(&pd->usecnt); } return ret; } EXPORT_SYMBOL(ib_rereg_phys_mr); int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr) { return mr->device->query_mr ? mr->device->query_mr(mr, mr_attr) : -ENOSYS; } EXPORT_SYMBOL(ib_query_mr); int ib_dereg_mr(struct ib_mr *mr) { struct ib_pd *pd; int ret; if (atomic_read(&mr->usecnt)) return -EBUSY; pd = mr->pd; ret = mr->device->dereg_mr(mr); if (!ret) atomic_dec(&pd->usecnt); return ret; } EXPORT_SYMBOL(ib_dereg_mr); struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len) { struct ib_mr *mr; if (!pd->device->alloc_fast_reg_mr) return ERR_PTR(-ENOSYS); mr = pd->device->alloc_fast_reg_mr(pd, max_page_list_len); if (!IS_ERR(mr)) { mr->device = pd->device; mr->pd = pd; mr->uobject = NULL; atomic_inc(&pd->usecnt); atomic_set(&mr->usecnt, 0); } return mr; } EXPORT_SYMBOL(ib_alloc_fast_reg_mr); struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(struct ib_device *device, int max_page_list_len) { struct ib_fast_reg_page_list *page_list; if (!device->alloc_fast_reg_page_list) return ERR_PTR(-ENOSYS); page_list = device->alloc_fast_reg_page_list(device, max_page_list_len); if (!IS_ERR(page_list)) { page_list->device = device; page_list->max_page_list_len = max_page_list_len; } return page_list; } EXPORT_SYMBOL(ib_alloc_fast_reg_page_list); void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list) { page_list->device->free_fast_reg_page_list(page_list); } EXPORT_SYMBOL(ib_free_fast_reg_page_list); /* Memory windows */ struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type) { struct ib_mw *mw; if (!pd->device->alloc_mw) return ERR_PTR(-ENOSYS); mw = pd->device->alloc_mw(pd, type); if (!IS_ERR(mw)) { mw->device = pd->device; mw->pd = pd; mw->uobject = NULL; mw->type = type; atomic_inc(&pd->usecnt); } return mw; } EXPORT_SYMBOL(ib_alloc_mw); int ib_dealloc_mw(struct ib_mw *mw) { struct ib_pd *pd; int ret; pd = mw->pd; ret = mw->device->dealloc_mw(mw); if (!ret) atomic_dec(&pd->usecnt); return ret; } EXPORT_SYMBOL(ib_dealloc_mw); /* "Fast" memory regions */ struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, int mr_access_flags, struct ib_fmr_attr *fmr_attr) { struct ib_fmr *fmr; if (!pd->device->alloc_fmr) return ERR_PTR(-ENOSYS); fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr); if (!IS_ERR(fmr)) { fmr->device = pd->device; fmr->pd = pd; atomic_inc(&pd->usecnt); } return fmr; } EXPORT_SYMBOL(ib_alloc_fmr); int ib_unmap_fmr(struct list_head *fmr_list) { struct ib_fmr *fmr; if (list_empty(fmr_list)) return 0; fmr = list_entry(fmr_list->next, struct ib_fmr, list); return fmr->device->unmap_fmr(fmr_list); } EXPORT_SYMBOL(ib_unmap_fmr); int ib_dealloc_fmr(struct ib_fmr *fmr) { struct ib_pd *pd; int ret; pd = fmr->pd; ret = fmr->device->dealloc_fmr(fmr); if (!ret) atomic_dec(&pd->usecnt); return ret; } EXPORT_SYMBOL(ib_dealloc_fmr); /* Multicast groups */ int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) { int ret; if (!qp->device->attach_mcast) return -ENOSYS; if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) return -EINVAL; ret = qp->device->attach_mcast(qp, gid, lid); if (!ret) atomic_inc(&qp->usecnt); return ret; } EXPORT_SYMBOL(ib_attach_mcast); int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid) { int ret; if (!qp->device->detach_mcast) return -ENOSYS; if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD) return -EINVAL; ret = qp->device->detach_mcast(qp, gid, lid); if (!ret) atomic_dec(&qp->usecnt); return ret; } EXPORT_SYMBOL(ib_detach_mcast); struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device) { struct ib_xrcd *xrcd; if (!device->alloc_xrcd) return ERR_PTR(-ENOSYS); xrcd = device->alloc_xrcd(device, NULL, NULL); if (!IS_ERR(xrcd)) { xrcd->device = device; xrcd->inode = NULL; atomic_set(&xrcd->usecnt, 0); mutex_init(&xrcd->tgt_qp_mutex); INIT_LIST_HEAD(&xrcd->tgt_qp_list); } return xrcd; } EXPORT_SYMBOL(ib_alloc_xrcd); int ib_dealloc_xrcd(struct ib_xrcd *xrcd) { struct ib_qp *qp; int ret; if (atomic_read(&xrcd->usecnt)) return -EBUSY; while (!list_empty(&xrcd->tgt_qp_list)) { qp = list_entry(xrcd->tgt_qp_list.next, struct ib_qp, xrcd_list); ret = ib_destroy_qp(qp); if (ret) return ret; } return xrcd->device->dealloc_xrcd(xrcd); } EXPORT_SYMBOL(ib_dealloc_xrcd); struct ib_flow *ib_create_flow(struct ib_qp *qp, struct ib_flow_attr *flow_attr, int domain) { struct ib_flow *flow_id; if (!qp->device->create_flow) return ERR_PTR(-ENOSYS); flow_id = qp->device->create_flow(qp, flow_attr, domain); if (!IS_ERR(flow_id)) atomic_inc(&qp->usecnt); return flow_id; } EXPORT_SYMBOL(ib_create_flow); int ib_destroy_flow(struct ib_flow *flow_id) { int err; struct ib_qp *qp = flow_id->qp; err = qp->device->destroy_flow(flow_id); if (!err) atomic_dec(&qp->usecnt); return err; } EXPORT_SYMBOL(ib_destroy_flow);