/* * 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 #include #include #include #include "rxe.h" #include "rxe_loc.h" #include "rxe_queue.h" #include "rxe_task.h" 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_send_sge) { pr_warn("invalid send sge = %d > %d\n", cap->max_send_sge, rxe->attr.max_send_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_recv_sge) { pr_warn("invalid recv sge = %d > %d\n", cap->max_recv_sge, rxe->attr.max_recv_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) { 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); skb_queue_head_init(&qp->req_pkts); skb_queue_head_init(&qp->resp_pkts); 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 rxe_create_qp_resp __user *uresp) { 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, uresp ? &uresp->sq_mi : NULL, 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; rxe_init_task(&qp->req.task, qp, rxe_requester); rxe_init_task(&qp->comp.task, qp, rxe_completer); qp->qp_timeout_jiffies = 0; /* Can't be set for UD/UC in modify_qp */ if (init->qp_type == IB_QPT_RC) { timer_setup(&qp->rnr_nak_timer, rnr_nak_timer, 0); timer_setup(&qp->retrans_timer, retransmit_timer, 0); } 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 rxe_create_qp_resp __user *uresp) { 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, uresp ? &uresp->rq_mi : NULL, 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; } } rxe_init_task(&qp->resp.task, qp, rxe_responder); 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 rxe_create_qp_resp __user *uresp, 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 = ibpd->uobject ? 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, uresp); if (err) goto err1; err = rxe_qp_init_resp(rxe, qp, init, context, uresp); 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; 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_av_from_attr(attr->port_num, &qp->pri_av, &attr->ah_attr); rxe_av_fill_ip_info(&qp->pri_av, &attr->ah_attr); } if (mask & IB_QP_ALT_PATH) { rxe_av_from_attr(attr->alt_port_num, &qp->alt_av, &attr->alt_ah_attr); rxe_av_fill_ip_info(&qp->alt_av, &attr->alt_ah_attr); 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 */ 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); }