| /* |
| * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. |
| * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include <linux/skbuff.h> |
| #include <linux/delay.h> |
| #include <linux/sched.h> |
| #include <linux/vmalloc.h> |
| |
| #include "rxe.h" |
| #include "rxe_loc.h" |
| #include "rxe_queue.h" |
| #include "rxe_task.h" |
| |
| char *rxe_qp_state_name[] = { |
| [QP_STATE_RESET] = "RESET", |
| [QP_STATE_INIT] = "INIT", |
| [QP_STATE_READY] = "READY", |
| [QP_STATE_DRAIN] = "DRAIN", |
| [QP_STATE_DRAINED] = "DRAINED", |
| [QP_STATE_ERROR] = "ERROR", |
| }; |
| |
| static int rxe_qp_chk_cap(struct rxe_dev *rxe, struct ib_qp_cap *cap, |
| int has_srq) |
| { |
| if (cap->max_send_wr > rxe->attr.max_qp_wr) { |
| pr_warn("invalid send wr = %d > %d\n", |
| cap->max_send_wr, rxe->attr.max_qp_wr); |
| goto err1; |
| } |
| |
| if (cap->max_send_sge > rxe->attr.max_sge) { |
| pr_warn("invalid send sge = %d > %d\n", |
| cap->max_send_sge, rxe->attr.max_sge); |
| goto err1; |
| } |
| |
| if (!has_srq) { |
| if (cap->max_recv_wr > rxe->attr.max_qp_wr) { |
| pr_warn("invalid recv wr = %d > %d\n", |
| cap->max_recv_wr, rxe->attr.max_qp_wr); |
| goto err1; |
| } |
| |
| if (cap->max_recv_sge > rxe->attr.max_sge) { |
| pr_warn("invalid recv sge = %d > %d\n", |
| cap->max_recv_sge, rxe->attr.max_sge); |
| goto err1; |
| } |
| } |
| |
| if (cap->max_inline_data > rxe->max_inline_data) { |
| pr_warn("invalid max inline data = %d > %d\n", |
| cap->max_inline_data, rxe->max_inline_data); |
| goto err1; |
| } |
| |
| return 0; |
| |
| err1: |
| return -EINVAL; |
| } |
| |
| int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init) |
| { |
| struct ib_qp_cap *cap = &init->cap; |
| struct rxe_port *port; |
| int port_num = init->port_num; |
| |
| if (!init->recv_cq || !init->send_cq) { |
| pr_warn("missing cq\n"); |
| goto err1; |
| } |
| |
| if (rxe_qp_chk_cap(rxe, cap, !!init->srq)) |
| goto err1; |
| |
| if (init->qp_type == IB_QPT_SMI || init->qp_type == IB_QPT_GSI) { |
| if (port_num != 1) { |
| pr_warn("invalid port = %d\n", port_num); |
| goto err1; |
| } |
| |
| port = &rxe->port; |
| |
| if (init->qp_type == IB_QPT_SMI && port->qp_smi_index) { |
| pr_warn("SMI QP exists for port %d\n", port_num); |
| goto err1; |
| } |
| |
| if (init->qp_type == IB_QPT_GSI && port->qp_gsi_index) { |
| pr_warn("GSI QP exists for port %d\n", port_num); |
| goto err1; |
| } |
| } |
| |
| return 0; |
| |
| err1: |
| return -EINVAL; |
| } |
| |
| static int alloc_rd_atomic_resources(struct rxe_qp *qp, unsigned int n) |
| { |
| qp->resp.res_head = 0; |
| qp->resp.res_tail = 0; |
| qp->resp.resources = kcalloc(n, sizeof(struct resp_res), GFP_KERNEL); |
| |
| if (!qp->resp.resources) |
| return -ENOMEM; |
| |
| return 0; |
| } |
| |
| static void free_rd_atomic_resources(struct rxe_qp *qp) |
| { |
| if (qp->resp.resources) { |
| int i; |
| |
| for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) { |
| struct resp_res *res = &qp->resp.resources[i]; |
| |
| free_rd_atomic_resource(qp, res); |
| } |
| kfree(qp->resp.resources); |
| qp->resp.resources = NULL; |
| } |
| } |
| |
| void free_rd_atomic_resource(struct rxe_qp *qp, struct resp_res *res) |
| { |
| if (res->type == RXE_ATOMIC_MASK) { |
| rxe_drop_ref(qp); |
| kfree_skb(res->atomic.skb); |
| } else if (res->type == RXE_READ_MASK) { |
| if (res->read.mr) |
| rxe_drop_ref(res->read.mr); |
| } |
| res->type = 0; |
| } |
| |
| static void cleanup_rd_atomic_resources(struct rxe_qp *qp) |
| { |
| int i; |
| struct resp_res *res; |
| |
| if (qp->resp.resources) { |
| for (i = 0; i < qp->attr.max_dest_rd_atomic; i++) { |
| res = &qp->resp.resources[i]; |
| free_rd_atomic_resource(qp, res); |
| } |
| } |
| } |
| |
| static void rxe_qp_init_misc(struct rxe_dev *rxe, struct rxe_qp *qp, |
| struct ib_qp_init_attr *init) |
| { |
| struct rxe_port *port; |
| u32 qpn; |
| |
| qp->sq_sig_type = init->sq_sig_type; |
| qp->attr.path_mtu = 1; |
| qp->mtu = ib_mtu_enum_to_int(qp->attr.path_mtu); |
| |
| qpn = qp->pelem.index; |
| port = &rxe->port; |
| |
| switch (init->qp_type) { |
| case IB_QPT_SMI: |
| qp->ibqp.qp_num = 0; |
| port->qp_smi_index = qpn; |
| qp->attr.port_num = init->port_num; |
| break; |
| |
| case IB_QPT_GSI: |
| qp->ibqp.qp_num = 1; |
| port->qp_gsi_index = qpn; |
| qp->attr.port_num = init->port_num; |
| break; |
| |
| default: |
| qp->ibqp.qp_num = qpn; |
| break; |
| } |
| |
| INIT_LIST_HEAD(&qp->grp_list); |
| |
| skb_queue_head_init(&qp->send_pkts); |
| |
| spin_lock_init(&qp->grp_lock); |
| spin_lock_init(&qp->state_lock); |
| |
| spin_lock_init(&qp->req.task.state_lock); |
| spin_lock_init(&qp->resp.task.state_lock); |
| spin_lock_init(&qp->comp.task.state_lock); |
| |
| spin_lock_init(&qp->sq.sq_lock); |
| spin_lock_init(&qp->rq.producer_lock); |
| spin_lock_init(&qp->rq.consumer_lock); |
| |
| atomic_set(&qp->ssn, 0); |
| atomic_set(&qp->skb_out, 0); |
| } |
| |
| static int rxe_qp_init_req(struct rxe_dev *rxe, struct rxe_qp *qp, |
| struct ib_qp_init_attr *init, |
| struct ib_ucontext *context, struct ib_udata *udata) |
| { |
| int err; |
| int wqe_size; |
| |
| err = sock_create_kern(&init_net, AF_INET, SOCK_DGRAM, 0, &qp->sk); |
| if (err < 0) |
| return err; |
| qp->sk->sk->sk_user_data = qp; |
| |
| qp->sq.max_wr = init->cap.max_send_wr; |
| qp->sq.max_sge = init->cap.max_send_sge; |
| qp->sq.max_inline = init->cap.max_inline_data; |
| |
| wqe_size = max_t(int, sizeof(struct rxe_send_wqe) + |
| qp->sq.max_sge * sizeof(struct ib_sge), |
| sizeof(struct rxe_send_wqe) + |
| qp->sq.max_inline); |
| |
| qp->sq.queue = rxe_queue_init(rxe, |
| &qp->sq.max_wr, |
| wqe_size); |
| if (!qp->sq.queue) |
| return -ENOMEM; |
| |
| err = do_mmap_info(rxe, udata, true, |
| context, qp->sq.queue->buf, |
| qp->sq.queue->buf_size, &qp->sq.queue->ip); |
| |
| if (err) { |
| vfree(qp->sq.queue->buf); |
| kfree(qp->sq.queue); |
| qp->sq.queue = NULL; |
| return err; |
| } |
| |
| qp->req.wqe_index = producer_index(qp->sq.queue); |
| qp->req.state = QP_STATE_RESET; |
| qp->req.opcode = -1; |
| qp->comp.opcode = -1; |
| |
| skb_queue_head_init(&qp->req_pkts); |
| |
| rxe_init_task(rxe, &qp->req.task, qp, |
| rxe_requester, "req"); |
| rxe_init_task(rxe, &qp->comp.task, qp, |
| rxe_completer, "comp"); |
| |
| qp->qp_timeout_jiffies = 0; /* Can't be set for UD/UC in modify_qp */ |
| if (init->qp_type == IB_QPT_RC) { |
| setup_timer(&qp->rnr_nak_timer, rnr_nak_timer, (unsigned long)qp); |
| setup_timer(&qp->retrans_timer, retransmit_timer, (unsigned long)qp); |
| } |
| return 0; |
| } |
| |
| static int rxe_qp_init_resp(struct rxe_dev *rxe, struct rxe_qp *qp, |
| struct ib_qp_init_attr *init, |
| struct ib_ucontext *context, struct ib_udata *udata) |
| { |
| int err; |
| int wqe_size; |
| |
| if (!qp->srq) { |
| qp->rq.max_wr = init->cap.max_recv_wr; |
| qp->rq.max_sge = init->cap.max_recv_sge; |
| |
| wqe_size = rcv_wqe_size(qp->rq.max_sge); |
| |
| pr_debug("qp#%d max_wr = %d, max_sge = %d, wqe_size = %d\n", |
| qp_num(qp), qp->rq.max_wr, qp->rq.max_sge, wqe_size); |
| |
| qp->rq.queue = rxe_queue_init(rxe, |
| &qp->rq.max_wr, |
| wqe_size); |
| if (!qp->rq.queue) |
| return -ENOMEM; |
| |
| err = do_mmap_info(rxe, udata, false, context, |
| qp->rq.queue->buf, |
| qp->rq.queue->buf_size, |
| &qp->rq.queue->ip); |
| if (err) { |
| vfree(qp->rq.queue->buf); |
| kfree(qp->rq.queue); |
| qp->rq.queue = NULL; |
| return err; |
| } |
| } |
| |
| skb_queue_head_init(&qp->resp_pkts); |
| |
| rxe_init_task(rxe, &qp->resp.task, qp, |
| rxe_responder, "resp"); |
| |
| qp->resp.opcode = OPCODE_NONE; |
| qp->resp.msn = 0; |
| qp->resp.state = QP_STATE_RESET; |
| |
| return 0; |
| } |
| |
| /* called by the create qp verb */ |
| int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd, |
| struct ib_qp_init_attr *init, struct ib_udata *udata, |
| struct ib_pd *ibpd) |
| { |
| int err; |
| struct rxe_cq *rcq = to_rcq(init->recv_cq); |
| struct rxe_cq *scq = to_rcq(init->send_cq); |
| struct rxe_srq *srq = init->srq ? to_rsrq(init->srq) : NULL; |
| struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL; |
| |
| rxe_add_ref(pd); |
| rxe_add_ref(rcq); |
| rxe_add_ref(scq); |
| if (srq) |
| rxe_add_ref(srq); |
| |
| qp->pd = pd; |
| qp->rcq = rcq; |
| qp->scq = scq; |
| qp->srq = srq; |
| |
| rxe_qp_init_misc(rxe, qp, init); |
| |
| err = rxe_qp_init_req(rxe, qp, init, context, udata); |
| if (err) |
| goto err1; |
| |
| err = rxe_qp_init_resp(rxe, qp, init, context, udata); |
| if (err) |
| goto err2; |
| |
| qp->attr.qp_state = IB_QPS_RESET; |
| qp->valid = 1; |
| |
| return 0; |
| |
| err2: |
| rxe_queue_cleanup(qp->sq.queue); |
| err1: |
| qp->pd = NULL; |
| qp->rcq = NULL; |
| qp->scq = NULL; |
| qp->srq = NULL; |
| |
| if (srq) |
| rxe_drop_ref(srq); |
| rxe_drop_ref(scq); |
| rxe_drop_ref(rcq); |
| rxe_drop_ref(pd); |
| |
| return err; |
| } |
| |
| /* called by the query qp verb */ |
| int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init) |
| { |
| init->event_handler = qp->ibqp.event_handler; |
| init->qp_context = qp->ibqp.qp_context; |
| init->send_cq = qp->ibqp.send_cq; |
| init->recv_cq = qp->ibqp.recv_cq; |
| init->srq = qp->ibqp.srq; |
| |
| init->cap.max_send_wr = qp->sq.max_wr; |
| init->cap.max_send_sge = qp->sq.max_sge; |
| init->cap.max_inline_data = qp->sq.max_inline; |
| |
| if (!qp->srq) { |
| init->cap.max_recv_wr = qp->rq.max_wr; |
| init->cap.max_recv_sge = qp->rq.max_sge; |
| } |
| |
| init->sq_sig_type = qp->sq_sig_type; |
| |
| init->qp_type = qp->ibqp.qp_type; |
| init->port_num = 1; |
| |
| return 0; |
| } |
| |
| /* called by the modify qp verb, this routine checks all the parameters before |
| * making any changes |
| */ |
| int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp, |
| struct ib_qp_attr *attr, int mask) |
| { |
| enum ib_qp_state cur_state = (mask & IB_QP_CUR_STATE) ? |
| attr->cur_qp_state : qp->attr.qp_state; |
| enum ib_qp_state new_state = (mask & IB_QP_STATE) ? |
| attr->qp_state : cur_state; |
| |
| if (!ib_modify_qp_is_ok(cur_state, new_state, qp_type(qp), mask, |
| IB_LINK_LAYER_ETHERNET)) { |
| pr_warn("invalid mask or state for qp\n"); |
| goto err1; |
| } |
| |
| if (mask & IB_QP_STATE) { |
| if (cur_state == IB_QPS_SQD) { |
| if (qp->req.state == QP_STATE_DRAIN && |
| new_state != IB_QPS_ERR) |
| goto err1; |
| } |
| } |
| |
| if (mask & IB_QP_PORT) { |
| if (attr->port_num != 1) { |
| pr_warn("invalid port %d\n", attr->port_num); |
| goto err1; |
| } |
| } |
| |
| if (mask & IB_QP_CAP && rxe_qp_chk_cap(rxe, &attr->cap, !!qp->srq)) |
| goto err1; |
| |
| if (mask & IB_QP_AV && rxe_av_chk_attr(rxe, &attr->ah_attr)) |
| goto err1; |
| |
| if (mask & IB_QP_ALT_PATH) { |
| if (rxe_av_chk_attr(rxe, &attr->alt_ah_attr)) |
| goto err1; |
| if (attr->alt_port_num != 1) { |
| pr_warn("invalid alt port %d\n", attr->alt_port_num); |
| goto err1; |
| } |
| if (attr->alt_timeout > 31) { |
| pr_warn("invalid QP alt timeout %d > 31\n", |
| attr->alt_timeout); |
| goto err1; |
| } |
| } |
| |
| if (mask & IB_QP_PATH_MTU) { |
| struct rxe_port *port = &rxe->port; |
| |
| enum ib_mtu max_mtu = port->attr.max_mtu; |
| enum ib_mtu mtu = attr->path_mtu; |
| |
| if (mtu > max_mtu) { |
| pr_debug("invalid mtu (%d) > (%d)\n", |
| ib_mtu_enum_to_int(mtu), |
| ib_mtu_enum_to_int(max_mtu)); |
| goto err1; |
| } |
| } |
| |
| if (mask & IB_QP_MAX_QP_RD_ATOMIC) { |
| if (attr->max_rd_atomic > rxe->attr.max_qp_rd_atom) { |
| pr_warn("invalid max_rd_atomic %d > %d\n", |
| attr->max_rd_atomic, |
| rxe->attr.max_qp_rd_atom); |
| goto err1; |
| } |
| } |
| |
| if (mask & IB_QP_TIMEOUT) { |
| if (attr->timeout > 31) { |
| pr_warn("invalid QP timeout %d > 31\n", |
| attr->timeout); |
| goto err1; |
| } |
| } |
| |
| return 0; |
| |
| err1: |
| return -EINVAL; |
| } |
| |
| /* move the qp to the reset state */ |
| static void rxe_qp_reset(struct rxe_qp *qp) |
| { |
| /* stop tasks from running */ |
| rxe_disable_task(&qp->resp.task); |
| |
| /* stop request/comp */ |
| if (qp->sq.queue) { |
| if (qp_type(qp) == IB_QPT_RC) |
| rxe_disable_task(&qp->comp.task); |
| rxe_disable_task(&qp->req.task); |
| } |
| |
| /* move qp to the reset state */ |
| qp->req.state = QP_STATE_RESET; |
| qp->resp.state = QP_STATE_RESET; |
| |
| /* let state machines reset themselves drain work and packet queues |
| * etc. |
| */ |
| __rxe_do_task(&qp->resp.task); |
| |
| if (qp->sq.queue) { |
| __rxe_do_task(&qp->comp.task); |
| __rxe_do_task(&qp->req.task); |
| rxe_queue_reset(qp->sq.queue); |
| } |
| |
| /* cleanup attributes */ |
| atomic_set(&qp->ssn, 0); |
| qp->req.opcode = -1; |
| qp->req.need_retry = 0; |
| qp->req.noack_pkts = 0; |
| qp->resp.msn = 0; |
| qp->resp.opcode = -1; |
| qp->resp.drop_msg = 0; |
| qp->resp.goto_error = 0; |
| qp->resp.sent_psn_nak = 0; |
| |
| if (qp->resp.mr) { |
| rxe_drop_ref(qp->resp.mr); |
| qp->resp.mr = NULL; |
| } |
| |
| cleanup_rd_atomic_resources(qp); |
| |
| /* reenable tasks */ |
| rxe_enable_task(&qp->resp.task); |
| |
| 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; |
| struct rxe_dev *rxe = to_rdev(qp->ibqp.device); |
| union ib_gid sgid; |
| struct ib_gid_attr sgid_attr; |
| |
| 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) { |
| ib_get_cached_gid(&rxe->ib_dev, 1, |
| rdma_ah_read_grh(&attr->ah_attr)->sgid_index, |
| &sgid, &sgid_attr); |
| rxe_av_from_attr(rxe, attr->port_num, &qp->pri_av, |
| &attr->ah_attr); |
| rxe_av_fill_ip_info(rxe, &qp->pri_av, &attr->ah_attr, |
| &sgid_attr, &sgid); |
| if (sgid_attr.ndev) |
| dev_put(sgid_attr.ndev); |
| } |
| |
| if (mask & IB_QP_ALT_PATH) { |
| u8 sgid_index = |
| rdma_ah_read_grh(&attr->alt_ah_attr)->sgid_index; |
| |
| ib_get_cached_gid(&rxe->ib_dev, 1, sgid_index, |
| &sgid, &sgid_attr); |
| |
| rxe_av_from_attr(rxe, attr->alt_port_num, &qp->alt_av, |
| &attr->alt_ah_attr); |
| rxe_av_fill_ip_info(rxe, &qp->alt_av, &attr->alt_ah_attr, |
| &sgid_attr, &sgid); |
| if (sgid_attr.ndev) |
| dev_put(sgid_attr.ndev); |
| |
| 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) |
| { |
| struct rxe_dev *rxe = to_rdev(qp->ibqp.device); |
| |
| *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(rxe, &qp->pri_av, &attr->ah_attr); |
| rxe_av_to_attr(rxe, &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 */ |
| if (qp->req.task.func) |
| __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; |
| } |
| |
| free_rd_atomic_resources(qp); |
| |
| if (qp->sk) { |
| if (qp_type(qp) == IB_QPT_RC) |
| sk_dst_reset(qp->sk->sk); |
| |
| 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); |
| } |