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847 lines
19 KiB
847 lines
19 KiB
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB |
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/* |
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* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. |
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* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. |
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*/ |
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|
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#include <linux/skbuff.h> |
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#include <linux/delay.h> |
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#include <linux/sched.h> |
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#include <linux/vmalloc.h> |
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#include <rdma/uverbs_ioctl.h> |
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|
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#include "rxe.h" |
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#include "rxe_loc.h" |
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#include "rxe_queue.h" |
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#include "rxe_task.h" |
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|
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static int rxe_qp_chk_cap(struct rxe_dev *rxe, struct ib_qp_cap *cap, |
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int has_srq) |
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{ |
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if (cap->max_send_wr > rxe->attr.max_qp_wr) { |
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pr_warn("invalid send wr = %d > %d\n", |
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cap->max_send_wr, rxe->attr.max_qp_wr); |
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goto err1; |
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} |
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|
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if (cap->max_send_sge > rxe->attr.max_send_sge) { |
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pr_warn("invalid send sge = %d > %d\n", |
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cap->max_send_sge, rxe->attr.max_send_sge); |
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goto err1; |
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} |
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|
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if (!has_srq) { |
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if (cap->max_recv_wr > rxe->attr.max_qp_wr) { |
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pr_warn("invalid recv wr = %d > %d\n", |
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cap->max_recv_wr, rxe->attr.max_qp_wr); |
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goto err1; |
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} |
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|
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if (cap->max_recv_sge > rxe->attr.max_recv_sge) { |
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pr_warn("invalid recv sge = %d > %d\n", |
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cap->max_recv_sge, rxe->attr.max_recv_sge); |
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goto err1; |
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} |
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} |
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|
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if (cap->max_inline_data > rxe->max_inline_data) { |
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pr_warn("invalid max inline data = %d > %d\n", |
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cap->max_inline_data, rxe->max_inline_data); |
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goto err1; |
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} |
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|
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return 0; |
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|
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err1: |
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return -EINVAL; |
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} |
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|
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int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init) |
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{ |
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struct ib_qp_cap *cap = &init->cap; |
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struct rxe_port *port; |
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int port_num = init->port_num; |
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|
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switch (init->qp_type) { |
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case IB_QPT_SMI: |
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case IB_QPT_GSI: |
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case IB_QPT_RC: |
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case IB_QPT_UC: |
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case IB_QPT_UD: |
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break; |
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default: |
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return -EOPNOTSUPP; |
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} |
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|
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if (!init->recv_cq || !init->send_cq) { |
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pr_warn("missing cq\n"); |
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goto err1; |
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} |
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if (rxe_qp_chk_cap(rxe, cap, !!init->srq)) |
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goto err1; |
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|
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if (init->qp_type == IB_QPT_SMI || init->qp_type == IB_QPT_GSI) { |
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if (!rdma_is_port_valid(&rxe->ib_dev, port_num)) { |
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pr_warn("invalid port = %d\n", port_num); |
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goto err1; |
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} |
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port = &rxe->port; |
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if (init->qp_type == IB_QPT_SMI && port->qp_smi_index) { |
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pr_warn("SMI QP exists for port %d\n", port_num); |
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goto err1; |
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} |
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if (init->qp_type == IB_QPT_GSI && port->qp_gsi_index) { |
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pr_warn("GSI QP exists for port %d\n", port_num); |
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goto err1; |
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} |
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} |
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return 0; |
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err1: |
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return -EINVAL; |
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} |
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static int alloc_rd_atomic_resources(struct rxe_qp *qp, unsigned int n) |
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{ |
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qp->resp.res_head = 0; |
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qp->resp.res_tail = 0; |
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qp->resp.resources = kcalloc(n, sizeof(struct resp_res), GFP_KERNEL); |
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if (!qp->resp.resources) |
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return -ENOMEM; |
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return 0; |
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} |
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static void free_rd_atomic_resources(struct rxe_qp *qp) |
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{ |
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if (qp->resp.resources) { |
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int i; |
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for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) { |
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struct resp_res *res = &qp->resp.resources[i]; |
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|
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free_rd_atomic_resource(qp, res); |
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} |
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kfree(qp->resp.resources); |
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qp->resp.resources = NULL; |
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} |
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} |
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|
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void free_rd_atomic_resource(struct rxe_qp *qp, struct resp_res *res) |
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{ |
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if (res->type == RXE_ATOMIC_MASK) { |
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kfree_skb(res->atomic.skb); |
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} else if (res->type == RXE_READ_MASK) { |
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if (res->read.mr) |
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rxe_drop_ref(res->read.mr); |
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} |
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res->type = 0; |
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} |
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static void cleanup_rd_atomic_resources(struct rxe_qp *qp) |
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{ |
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int i; |
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struct resp_res *res; |
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|
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if (qp->resp.resources) { |
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for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) { |
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res = &qp->resp.resources[i]; |
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free_rd_atomic_resource(qp, res); |
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} |
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} |
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} |
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static void rxe_qp_init_misc(struct rxe_dev *rxe, struct rxe_qp *qp, |
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struct ib_qp_init_attr *init) |
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{ |
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struct rxe_port *port; |
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u32 qpn; |
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|
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qp->sq_sig_type = init->sq_sig_type; |
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qp->attr.path_mtu = 1; |
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qp->mtu = ib_mtu_enum_to_int(qp->attr.path_mtu); |
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qpn = qp->pelem.index; |
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port = &rxe->port; |
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switch (init->qp_type) { |
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case IB_QPT_SMI: |
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qp->ibqp.qp_num = 0; |
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port->qp_smi_index = qpn; |
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qp->attr.port_num = init->port_num; |
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break; |
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case IB_QPT_GSI: |
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qp->ibqp.qp_num = 1; |
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port->qp_gsi_index = qpn; |
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qp->attr.port_num = init->port_num; |
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break; |
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default: |
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qp->ibqp.qp_num = qpn; |
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break; |
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} |
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INIT_LIST_HEAD(&qp->grp_list); |
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skb_queue_head_init(&qp->send_pkts); |
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spin_lock_init(&qp->grp_lock); |
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spin_lock_init(&qp->state_lock); |
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atomic_set(&qp->ssn, 0); |
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atomic_set(&qp->skb_out, 0); |
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} |
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static int rxe_qp_init_req(struct rxe_dev *rxe, struct rxe_qp *qp, |
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struct ib_qp_init_attr *init, struct ib_udata *udata, |
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struct rxe_create_qp_resp __user *uresp) |
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{ |
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int err; |
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int wqe_size; |
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enum queue_type type; |
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err = sock_create_kern(&init_net, AF_INET, SOCK_DGRAM, 0, &qp->sk); |
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if (err < 0) |
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return err; |
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qp->sk->sk->sk_user_data = qp; |
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|
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/* pick a source UDP port number for this QP based on |
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* the source QPN. this spreads traffic for different QPs |
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* across different NIC RX queues (while using a single |
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* flow for a given QP to maintain packet order). |
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* the port number must be in the Dynamic Ports range |
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* (0xc000 - 0xffff). |
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*/ |
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qp->src_port = RXE_ROCE_V2_SPORT + |
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(hash_32_generic(qp_num(qp), 14) & 0x3fff); |
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qp->sq.max_wr = init->cap.max_send_wr; |
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|
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/* These caps are limited by rxe_qp_chk_cap() done by the caller */ |
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wqe_size = max_t(int, init->cap.max_send_sge * sizeof(struct ib_sge), |
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init->cap.max_inline_data); |
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qp->sq.max_sge = init->cap.max_send_sge = |
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wqe_size / sizeof(struct ib_sge); |
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qp->sq.max_inline = init->cap.max_inline_data = wqe_size; |
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wqe_size += sizeof(struct rxe_send_wqe); |
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type = uresp ? QUEUE_TYPE_FROM_USER : QUEUE_TYPE_KERNEL; |
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qp->sq.queue = rxe_queue_init(rxe, &qp->sq.max_wr, |
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wqe_size, type); |
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if (!qp->sq.queue) |
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return -ENOMEM; |
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err = do_mmap_info(rxe, uresp ? &uresp->sq_mi : NULL, udata, |
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qp->sq.queue->buf, qp->sq.queue->buf_size, |
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&qp->sq.queue->ip); |
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if (err) { |
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vfree(qp->sq.queue->buf); |
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kfree(qp->sq.queue); |
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qp->sq.queue = NULL; |
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return err; |
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} |
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if (qp->is_user) |
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qp->req.wqe_index = producer_index(qp->sq.queue, |
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QUEUE_TYPE_FROM_USER); |
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else |
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qp->req.wqe_index = producer_index(qp->sq.queue, |
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QUEUE_TYPE_KERNEL); |
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qp->req.state = QP_STATE_RESET; |
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qp->req.opcode = -1; |
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qp->comp.opcode = -1; |
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spin_lock_init(&qp->sq.sq_lock); |
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skb_queue_head_init(&qp->req_pkts); |
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rxe_init_task(rxe, &qp->req.task, qp, |
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rxe_requester, "req"); |
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rxe_init_task(rxe, &qp->comp.task, qp, |
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rxe_completer, "comp"); |
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qp->qp_timeout_jiffies = 0; /* Can't be set for UD/UC in modify_qp */ |
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if (init->qp_type == IB_QPT_RC) { |
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timer_setup(&qp->rnr_nak_timer, rnr_nak_timer, 0); |
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timer_setup(&qp->retrans_timer, retransmit_timer, 0); |
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} |
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return 0; |
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} |
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static int rxe_qp_init_resp(struct rxe_dev *rxe, struct rxe_qp *qp, |
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struct ib_qp_init_attr *init, |
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struct ib_udata *udata, |
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struct rxe_create_qp_resp __user *uresp) |
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{ |
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int err; |
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int wqe_size; |
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enum queue_type type; |
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if (!qp->srq) { |
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qp->rq.max_wr = init->cap.max_recv_wr; |
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qp->rq.max_sge = init->cap.max_recv_sge; |
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wqe_size = rcv_wqe_size(qp->rq.max_sge); |
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pr_debug("qp#%d max_wr = %d, max_sge = %d, wqe_size = %d\n", |
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qp_num(qp), qp->rq.max_wr, qp->rq.max_sge, wqe_size); |
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type = uresp ? QUEUE_TYPE_FROM_USER : QUEUE_TYPE_KERNEL; |
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qp->rq.queue = rxe_queue_init(rxe, &qp->rq.max_wr, |
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wqe_size, type); |
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if (!qp->rq.queue) |
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return -ENOMEM; |
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err = do_mmap_info(rxe, uresp ? &uresp->rq_mi : NULL, udata, |
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qp->rq.queue->buf, qp->rq.queue->buf_size, |
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&qp->rq.queue->ip); |
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if (err) { |
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vfree(qp->rq.queue->buf); |
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kfree(qp->rq.queue); |
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qp->rq.queue = NULL; |
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return err; |
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} |
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} |
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spin_lock_init(&qp->rq.producer_lock); |
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spin_lock_init(&qp->rq.consumer_lock); |
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qp->rq.is_user = qp->is_user; |
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skb_queue_head_init(&qp->resp_pkts); |
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rxe_init_task(rxe, &qp->resp.task, qp, |
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rxe_responder, "resp"); |
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qp->resp.opcode = OPCODE_NONE; |
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qp->resp.msn = 0; |
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qp->resp.state = QP_STATE_RESET; |
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return 0; |
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} |
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|
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/* called by the create qp verb */ |
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int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd, |
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struct ib_qp_init_attr *init, |
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struct rxe_create_qp_resp __user *uresp, |
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struct ib_pd *ibpd, |
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struct ib_udata *udata) |
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{ |
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int err; |
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struct rxe_cq *rcq = to_rcq(init->recv_cq); |
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struct rxe_cq *scq = to_rcq(init->send_cq); |
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struct rxe_srq *srq = init->srq ? to_rsrq(init->srq) : NULL; |
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|
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rxe_add_ref(pd); |
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rxe_add_ref(rcq); |
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rxe_add_ref(scq); |
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if (srq) |
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rxe_add_ref(srq); |
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qp->pd = pd; |
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qp->rcq = rcq; |
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qp->scq = scq; |
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qp->srq = srq; |
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rxe_qp_init_misc(rxe, qp, init); |
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err = rxe_qp_init_req(rxe, qp, init, udata, uresp); |
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if (err) |
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goto err1; |
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err = rxe_qp_init_resp(rxe, qp, init, udata, uresp); |
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if (err) |
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goto err2; |
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qp->attr.qp_state = IB_QPS_RESET; |
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qp->valid = 1; |
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return 0; |
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err2: |
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rxe_queue_cleanup(qp->sq.queue); |
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err1: |
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qp->pd = NULL; |
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qp->rcq = NULL; |
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qp->scq = NULL; |
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qp->srq = NULL; |
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if (srq) |
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rxe_drop_ref(srq); |
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rxe_drop_ref(scq); |
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rxe_drop_ref(rcq); |
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rxe_drop_ref(pd); |
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return err; |
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} |
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/* called by the query qp verb */ |
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int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init) |
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{ |
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init->event_handler = qp->ibqp.event_handler; |
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init->qp_context = qp->ibqp.qp_context; |
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init->send_cq = qp->ibqp.send_cq; |
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init->recv_cq = qp->ibqp.recv_cq; |
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init->srq = qp->ibqp.srq; |
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|
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init->cap.max_send_wr = qp->sq.max_wr; |
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init->cap.max_send_sge = qp->sq.max_sge; |
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init->cap.max_inline_data = qp->sq.max_inline; |
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if (!qp->srq) { |
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init->cap.max_recv_wr = qp->rq.max_wr; |
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init->cap.max_recv_sge = qp->rq.max_sge; |
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} |
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init->sq_sig_type = qp->sq_sig_type; |
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init->qp_type = qp->ibqp.qp_type; |
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init->port_num = 1; |
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|
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return 0; |
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} |
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|
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/* called by the modify qp verb, this routine checks all the parameters before |
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* making any changes |
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*/ |
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int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp, |
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struct ib_qp_attr *attr, int mask) |
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{ |
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enum ib_qp_state cur_state = (mask & IB_QP_CUR_STATE) ? |
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attr->cur_qp_state : qp->attr.qp_state; |
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enum ib_qp_state new_state = (mask & IB_QP_STATE) ? |
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attr->qp_state : cur_state; |
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|
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if (!ib_modify_qp_is_ok(cur_state, new_state, qp_type(qp), mask)) { |
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pr_warn("invalid mask or state for qp\n"); |
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goto err1; |
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} |
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|
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if (mask & IB_QP_STATE) { |
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if (cur_state == IB_QPS_SQD) { |
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if (qp->req.state == QP_STATE_DRAIN && |
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new_state != IB_QPS_ERR) |
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goto err1; |
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} |
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} |
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|
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if (mask & IB_QP_PORT) { |
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if (!rdma_is_port_valid(&rxe->ib_dev, attr->port_num)) { |
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pr_warn("invalid port %d\n", attr->port_num); |
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goto err1; |
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} |
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} |
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|
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if (mask & IB_QP_CAP && rxe_qp_chk_cap(rxe, &attr->cap, !!qp->srq)) |
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goto err1; |
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|
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if (mask & IB_QP_AV && rxe_av_chk_attr(rxe, &attr->ah_attr)) |
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goto err1; |
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|
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if (mask & IB_QP_ALT_PATH) { |
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if (rxe_av_chk_attr(rxe, &attr->alt_ah_attr)) |
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goto err1; |
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if (!rdma_is_port_valid(&rxe->ib_dev, attr->alt_port_num)) { |
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pr_warn("invalid alt port %d\n", attr->alt_port_num); |
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goto err1; |
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} |
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if (attr->alt_timeout > 31) { |
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pr_warn("invalid QP alt timeout %d > 31\n", |
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attr->alt_timeout); |
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goto err1; |
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} |
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} |
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|
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if (mask & IB_QP_PATH_MTU) { |
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struct rxe_port *port = &rxe->port; |
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|
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enum ib_mtu max_mtu = port->attr.max_mtu; |
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enum ib_mtu mtu = attr->path_mtu; |
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|
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if (mtu > max_mtu) { |
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pr_debug("invalid mtu (%d) > (%d)\n", |
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ib_mtu_enum_to_int(mtu), |
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ib_mtu_enum_to_int(max_mtu)); |
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goto err1; |
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} |
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} |
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|
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if (mask & IB_QP_MAX_QP_RD_ATOMIC) { |
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if (attr->max_rd_atomic > rxe->attr.max_qp_rd_atom) { |
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pr_warn("invalid max_rd_atomic %d > %d\n", |
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attr->max_rd_atomic, |
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rxe->attr.max_qp_rd_atom); |
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goto err1; |
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} |
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} |
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|
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if (mask & IB_QP_TIMEOUT) { |
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if (attr->timeout > 31) { |
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pr_warn("invalid QP timeout %d > 31\n", |
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attr->timeout); |
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goto err1; |
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} |
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} |
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|
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return 0; |
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|
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err1: |
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return -EINVAL; |
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} |
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|
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/* move the qp to the reset state */ |
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static void rxe_qp_reset(struct rxe_qp *qp) |
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{ |
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/* stop tasks from running */ |
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rxe_disable_task(&qp->resp.task); |
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|
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/* stop request/comp */ |
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if (qp->sq.queue) { |
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if (qp_type(qp) == IB_QPT_RC) |
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rxe_disable_task(&qp->comp.task); |
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rxe_disable_task(&qp->req.task); |
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} |
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|
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/* move qp to the reset state */ |
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qp->req.state = QP_STATE_RESET; |
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qp->resp.state = QP_STATE_RESET; |
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|
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/* let state machines reset themselves drain work and packet queues |
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* etc. |
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*/ |
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__rxe_do_task(&qp->resp.task); |
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|
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if (qp->sq.queue) { |
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__rxe_do_task(&qp->comp.task); |
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__rxe_do_task(&qp->req.task); |
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rxe_queue_reset(qp->sq.queue); |
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} |
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|
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/* cleanup attributes */ |
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atomic_set(&qp->ssn, 0); |
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qp->req.opcode = -1; |
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qp->req.need_retry = 0; |
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qp->req.noack_pkts = 0; |
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qp->resp.msn = 0; |
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qp->resp.opcode = -1; |
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qp->resp.drop_msg = 0; |
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qp->resp.goto_error = 0; |
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qp->resp.sent_psn_nak = 0; |
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|
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if (qp->resp.mr) { |
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rxe_drop_ref(qp->resp.mr); |
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qp->resp.mr = NULL; |
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} |
|
|
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cleanup_rd_atomic_resources(qp); |
|
|
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/* reenable tasks */ |
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rxe_enable_task(&qp->resp.task); |
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|
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if (qp->sq.queue) { |
|
if (qp_type(qp) == IB_QPT_RC) |
|
rxe_enable_task(&qp->comp.task); |
|
|
|
rxe_enable_task(&qp->req.task); |
|
} |
|
} |
|
|
|
/* drain the send queue */ |
|
static void rxe_qp_drain(struct rxe_qp *qp) |
|
{ |
|
if (qp->sq.queue) { |
|
if (qp->req.state != QP_STATE_DRAINED) { |
|
qp->req.state = QP_STATE_DRAIN; |
|
if (qp_type(qp) == IB_QPT_RC) |
|
rxe_run_task(&qp->comp.task, 1); |
|
else |
|
__rxe_do_task(&qp->comp.task); |
|
rxe_run_task(&qp->req.task, 1); |
|
} |
|
} |
|
} |
|
|
|
/* move the qp to the error state */ |
|
void rxe_qp_error(struct rxe_qp *qp) |
|
{ |
|
qp->req.state = QP_STATE_ERROR; |
|
qp->resp.state = QP_STATE_ERROR; |
|
qp->attr.qp_state = IB_QPS_ERR; |
|
|
|
/* drain work and packet queues */ |
|
rxe_run_task(&qp->resp.task, 1); |
|
|
|
if (qp_type(qp) == IB_QPT_RC) |
|
rxe_run_task(&qp->comp.task, 1); |
|
else |
|
__rxe_do_task(&qp->comp.task); |
|
rxe_run_task(&qp->req.task, 1); |
|
} |
|
|
|
/* called by the modify qp verb */ |
|
int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask, |
|
struct ib_udata *udata) |
|
{ |
|
int err; |
|
|
|
if (mask & IB_QP_MAX_QP_RD_ATOMIC) { |
|
int max_rd_atomic = attr->max_rd_atomic ? |
|
roundup_pow_of_two(attr->max_rd_atomic) : 0; |
|
|
|
qp->attr.max_rd_atomic = max_rd_atomic; |
|
atomic_set(&qp->req.rd_atomic, max_rd_atomic); |
|
} |
|
|
|
if (mask & IB_QP_MAX_DEST_RD_ATOMIC) { |
|
int max_dest_rd_atomic = attr->max_dest_rd_atomic ? |
|
roundup_pow_of_two(attr->max_dest_rd_atomic) : 0; |
|
|
|
qp->attr.max_dest_rd_atomic = max_dest_rd_atomic; |
|
|
|
free_rd_atomic_resources(qp); |
|
|
|
err = alloc_rd_atomic_resources(qp, max_dest_rd_atomic); |
|
if (err) |
|
return err; |
|
} |
|
|
|
if (mask & IB_QP_CUR_STATE) |
|
qp->attr.cur_qp_state = attr->qp_state; |
|
|
|
if (mask & IB_QP_EN_SQD_ASYNC_NOTIFY) |
|
qp->attr.en_sqd_async_notify = attr->en_sqd_async_notify; |
|
|
|
if (mask & IB_QP_ACCESS_FLAGS) |
|
qp->attr.qp_access_flags = attr->qp_access_flags; |
|
|
|
if (mask & IB_QP_PKEY_INDEX) |
|
qp->attr.pkey_index = attr->pkey_index; |
|
|
|
if (mask & IB_QP_PORT) |
|
qp->attr.port_num = attr->port_num; |
|
|
|
if (mask & IB_QP_QKEY) |
|
qp->attr.qkey = attr->qkey; |
|
|
|
if (mask & IB_QP_AV) |
|
rxe_init_av(&attr->ah_attr, &qp->pri_av); |
|
|
|
if (mask & IB_QP_ALT_PATH) { |
|
rxe_init_av(&attr->alt_ah_attr, &qp->alt_av); |
|
qp->attr.alt_port_num = attr->alt_port_num; |
|
qp->attr.alt_pkey_index = attr->alt_pkey_index; |
|
qp->attr.alt_timeout = attr->alt_timeout; |
|
} |
|
|
|
if (mask & IB_QP_PATH_MTU) { |
|
qp->attr.path_mtu = attr->path_mtu; |
|
qp->mtu = ib_mtu_enum_to_int(attr->path_mtu); |
|
} |
|
|
|
if (mask & IB_QP_TIMEOUT) { |
|
qp->attr.timeout = attr->timeout; |
|
if (attr->timeout == 0) { |
|
qp->qp_timeout_jiffies = 0; |
|
} else { |
|
/* According to the spec, timeout = 4.096 * 2 ^ attr->timeout [us] */ |
|
int j = nsecs_to_jiffies(4096ULL << attr->timeout); |
|
|
|
qp->qp_timeout_jiffies = j ? j : 1; |
|
} |
|
} |
|
|
|
if (mask & IB_QP_RETRY_CNT) { |
|
qp->attr.retry_cnt = attr->retry_cnt; |
|
qp->comp.retry_cnt = attr->retry_cnt; |
|
pr_debug("qp#%d set retry count = %d\n", qp_num(qp), |
|
attr->retry_cnt); |
|
} |
|
|
|
if (mask & IB_QP_RNR_RETRY) { |
|
qp->attr.rnr_retry = attr->rnr_retry; |
|
qp->comp.rnr_retry = attr->rnr_retry; |
|
pr_debug("qp#%d set rnr retry count = %d\n", qp_num(qp), |
|
attr->rnr_retry); |
|
} |
|
|
|
if (mask & IB_QP_RQ_PSN) { |
|
qp->attr.rq_psn = (attr->rq_psn & BTH_PSN_MASK); |
|
qp->resp.psn = qp->attr.rq_psn; |
|
pr_debug("qp#%d set resp psn = 0x%x\n", qp_num(qp), |
|
qp->resp.psn); |
|
} |
|
|
|
if (mask & IB_QP_MIN_RNR_TIMER) { |
|
qp->attr.min_rnr_timer = attr->min_rnr_timer; |
|
pr_debug("qp#%d set min rnr timer = 0x%x\n", qp_num(qp), |
|
attr->min_rnr_timer); |
|
} |
|
|
|
if (mask & IB_QP_SQ_PSN) { |
|
qp->attr.sq_psn = (attr->sq_psn & BTH_PSN_MASK); |
|
qp->req.psn = qp->attr.sq_psn; |
|
qp->comp.psn = qp->attr.sq_psn; |
|
pr_debug("qp#%d set req psn = 0x%x\n", qp_num(qp), qp->req.psn); |
|
} |
|
|
|
if (mask & IB_QP_PATH_MIG_STATE) |
|
qp->attr.path_mig_state = attr->path_mig_state; |
|
|
|
if (mask & IB_QP_DEST_QPN) |
|
qp->attr.dest_qp_num = attr->dest_qp_num; |
|
|
|
if (mask & IB_QP_STATE) { |
|
qp->attr.qp_state = attr->qp_state; |
|
|
|
switch (attr->qp_state) { |
|
case IB_QPS_RESET: |
|
pr_debug("qp#%d state -> RESET\n", qp_num(qp)); |
|
rxe_qp_reset(qp); |
|
break; |
|
|
|
case IB_QPS_INIT: |
|
pr_debug("qp#%d state -> INIT\n", qp_num(qp)); |
|
qp->req.state = QP_STATE_INIT; |
|
qp->resp.state = QP_STATE_INIT; |
|
break; |
|
|
|
case IB_QPS_RTR: |
|
pr_debug("qp#%d state -> RTR\n", qp_num(qp)); |
|
qp->resp.state = QP_STATE_READY; |
|
break; |
|
|
|
case IB_QPS_RTS: |
|
pr_debug("qp#%d state -> RTS\n", qp_num(qp)); |
|
qp->req.state = QP_STATE_READY; |
|
break; |
|
|
|
case IB_QPS_SQD: |
|
pr_debug("qp#%d state -> SQD\n", qp_num(qp)); |
|
rxe_qp_drain(qp); |
|
break; |
|
|
|
case IB_QPS_SQE: |
|
pr_warn("qp#%d state -> SQE !!?\n", qp_num(qp)); |
|
/* Not possible from modify_qp. */ |
|
break; |
|
|
|
case IB_QPS_ERR: |
|
pr_debug("qp#%d state -> ERR\n", qp_num(qp)); |
|
rxe_qp_error(qp); |
|
break; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* called by the query qp verb */ |
|
int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask) |
|
{ |
|
*attr = qp->attr; |
|
|
|
attr->rq_psn = qp->resp.psn; |
|
attr->sq_psn = qp->req.psn; |
|
|
|
attr->cap.max_send_wr = qp->sq.max_wr; |
|
attr->cap.max_send_sge = qp->sq.max_sge; |
|
attr->cap.max_inline_data = qp->sq.max_inline; |
|
|
|
if (!qp->srq) { |
|
attr->cap.max_recv_wr = qp->rq.max_wr; |
|
attr->cap.max_recv_sge = qp->rq.max_sge; |
|
} |
|
|
|
rxe_av_to_attr(&qp->pri_av, &attr->ah_attr); |
|
rxe_av_to_attr(&qp->alt_av, &attr->alt_ah_attr); |
|
|
|
if (qp->req.state == QP_STATE_DRAIN) { |
|
attr->sq_draining = 1; |
|
/* applications that get this state |
|
* typically spin on it. yield the |
|
* processor |
|
*/ |
|
cond_resched(); |
|
} else { |
|
attr->sq_draining = 0; |
|
} |
|
|
|
pr_debug("attr->sq_draining = %d\n", attr->sq_draining); |
|
|
|
return 0; |
|
} |
|
|
|
/* called by the destroy qp verb */ |
|
void rxe_qp_destroy(struct rxe_qp *qp) |
|
{ |
|
qp->valid = 0; |
|
qp->qp_timeout_jiffies = 0; |
|
rxe_cleanup_task(&qp->resp.task); |
|
|
|
if (qp_type(qp) == IB_QPT_RC) { |
|
del_timer_sync(&qp->retrans_timer); |
|
del_timer_sync(&qp->rnr_nak_timer); |
|
} |
|
|
|
rxe_cleanup_task(&qp->req.task); |
|
rxe_cleanup_task(&qp->comp.task); |
|
|
|
/* flush out any receive wr's or pending requests */ |
|
__rxe_do_task(&qp->req.task); |
|
if (qp->sq.queue) { |
|
__rxe_do_task(&qp->comp.task); |
|
__rxe_do_task(&qp->req.task); |
|
} |
|
} |
|
|
|
/* called when the last reference to the qp is dropped */ |
|
static void rxe_qp_do_cleanup(struct work_struct *work) |
|
{ |
|
struct rxe_qp *qp = container_of(work, typeof(*qp), cleanup_work.work); |
|
|
|
rxe_drop_all_mcast_groups(qp); |
|
|
|
if (qp->sq.queue) |
|
rxe_queue_cleanup(qp->sq.queue); |
|
|
|
if (qp->srq) |
|
rxe_drop_ref(qp->srq); |
|
|
|
if (qp->rq.queue) |
|
rxe_queue_cleanup(qp->rq.queue); |
|
|
|
if (qp->scq) |
|
rxe_drop_ref(qp->scq); |
|
if (qp->rcq) |
|
rxe_drop_ref(qp->rcq); |
|
if (qp->pd) |
|
rxe_drop_ref(qp->pd); |
|
|
|
if (qp->resp.mr) { |
|
rxe_drop_ref(qp->resp.mr); |
|
qp->resp.mr = NULL; |
|
} |
|
|
|
if (qp_type(qp) == IB_QPT_RC) |
|
sk_dst_reset(qp->sk->sk); |
|
|
|
free_rd_atomic_resources(qp); |
|
|
|
kernel_sock_shutdown(qp->sk, SHUT_RDWR); |
|
sock_release(qp->sk); |
|
} |
|
|
|
/* called when the last reference to the qp is dropped */ |
|
void rxe_qp_cleanup(struct rxe_pool_entry *arg) |
|
{ |
|
struct rxe_qp *qp = container_of(arg, typeof(*qp), pelem); |
|
|
|
execute_in_process_context(rxe_qp_do_cleanup, &qp->cleanup_work); |
|
}
|
|
|