233 lines
6.8 KiB
C
233 lines
6.8 KiB
C
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/*
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* Copyright (c) 2006 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/gfp.h>
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#include <linux/mman.h>
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#include <net/sock.h>
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#include "iwch_provider.h"
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#include "iwch.h"
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#include "iwch_cm.h"
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#include "cxio_hal.h"
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#include "cxio_wr.h"
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static void post_qp_event(struct iwch_dev *rnicp, struct iwch_cq *chp,
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struct respQ_msg_t *rsp_msg,
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enum ib_event_type ib_event,
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int send_term)
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{
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struct ib_event event;
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struct iwch_qp_attributes attrs;
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struct iwch_qp *qhp;
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unsigned long flag;
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spin_lock(&rnicp->lock);
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qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe));
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if (!qhp) {
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pr_err("%s unaffiliated error 0x%x qpid 0x%x\n",
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__func__, CQE_STATUS(rsp_msg->cqe),
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CQE_QPID(rsp_msg->cqe));
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spin_unlock(&rnicp->lock);
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return;
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}
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if ((qhp->attr.state == IWCH_QP_STATE_ERROR) ||
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(qhp->attr.state == IWCH_QP_STATE_TERMINATE)) {
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pr_debug("%s AE received after RTS - qp state %d qpid 0x%x status 0x%x\n",
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__func__,
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qhp->attr.state, qhp->wq.qpid,
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CQE_STATUS(rsp_msg->cqe));
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spin_unlock(&rnicp->lock);
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return;
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}
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pr_err("%s - AE qpid 0x%x opcode %d status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n",
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__func__,
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CQE_QPID(rsp_msg->cqe), CQE_OPCODE(rsp_msg->cqe),
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CQE_STATUS(rsp_msg->cqe), CQE_TYPE(rsp_msg->cqe),
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CQE_WRID_HI(rsp_msg->cqe), CQE_WRID_LOW(rsp_msg->cqe));
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atomic_inc(&qhp->refcnt);
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spin_unlock(&rnicp->lock);
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if (qhp->attr.state == IWCH_QP_STATE_RTS) {
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attrs.next_state = IWCH_QP_STATE_TERMINATE;
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iwch_modify_qp(qhp->rhp, qhp, IWCH_QP_ATTR_NEXT_STATE,
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&attrs, 1);
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if (send_term)
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iwch_post_terminate(qhp, rsp_msg);
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}
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event.event = ib_event;
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event.device = chp->ibcq.device;
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if (ib_event == IB_EVENT_CQ_ERR)
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event.element.cq = &chp->ibcq;
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else
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event.element.qp = &qhp->ibqp;
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if (qhp->ibqp.event_handler)
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(*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context);
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spin_lock_irqsave(&chp->comp_handler_lock, flag);
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(*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
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spin_unlock_irqrestore(&chp->comp_handler_lock, flag);
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if (atomic_dec_and_test(&qhp->refcnt))
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wake_up(&qhp->wait);
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}
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void iwch_ev_dispatch(struct cxio_rdev *rdev_p, struct sk_buff *skb)
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{
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struct iwch_dev *rnicp;
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struct respQ_msg_t *rsp_msg = (struct respQ_msg_t *) skb->data;
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struct iwch_cq *chp;
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struct iwch_qp *qhp;
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u32 cqid = RSPQ_CQID(rsp_msg);
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unsigned long flag;
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rnicp = (struct iwch_dev *) rdev_p->ulp;
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spin_lock(&rnicp->lock);
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chp = get_chp(rnicp, cqid);
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qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe));
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if (!chp || !qhp) {
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pr_err("BAD AE cqid 0x%x qpid 0x%x opcode %d status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n",
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cqid, CQE_QPID(rsp_msg->cqe),
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CQE_OPCODE(rsp_msg->cqe), CQE_STATUS(rsp_msg->cqe),
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CQE_TYPE(rsp_msg->cqe), CQE_WRID_HI(rsp_msg->cqe),
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CQE_WRID_LOW(rsp_msg->cqe));
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spin_unlock(&rnicp->lock);
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goto out;
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}
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iwch_qp_add_ref(&qhp->ibqp);
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atomic_inc(&chp->refcnt);
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spin_unlock(&rnicp->lock);
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/*
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* 1) completion of our sending a TERMINATE.
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* 2) incoming TERMINATE message.
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*/
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if ((CQE_OPCODE(rsp_msg->cqe) == T3_TERMINATE) &&
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(CQE_STATUS(rsp_msg->cqe) == 0)) {
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if (SQ_TYPE(rsp_msg->cqe)) {
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pr_debug("%s QPID 0x%x ep %p disconnecting\n",
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__func__, qhp->wq.qpid, qhp->ep);
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iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC);
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} else {
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pr_debug("%s post REQ_ERR AE QPID 0x%x\n", __func__,
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qhp->wq.qpid);
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post_qp_event(rnicp, chp, rsp_msg,
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IB_EVENT_QP_REQ_ERR, 0);
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iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC);
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}
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goto done;
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}
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/* Bad incoming Read request */
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if (SQ_TYPE(rsp_msg->cqe) &&
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(CQE_OPCODE(rsp_msg->cqe) == T3_READ_RESP)) {
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post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1);
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goto done;
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}
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/* Bad incoming write */
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if (RQ_TYPE(rsp_msg->cqe) &&
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(CQE_OPCODE(rsp_msg->cqe) == T3_RDMA_WRITE)) {
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post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1);
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goto done;
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}
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switch (CQE_STATUS(rsp_msg->cqe)) {
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/* Completion Events */
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case TPT_ERR_SUCCESS:
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/*
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* Confirm the destination entry if this is a RECV completion.
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*/
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if (qhp->ep && SQ_TYPE(rsp_msg->cqe))
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dst_confirm(qhp->ep->dst);
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spin_lock_irqsave(&chp->comp_handler_lock, flag);
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(*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context);
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spin_unlock_irqrestore(&chp->comp_handler_lock, flag);
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break;
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case TPT_ERR_STAG:
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case TPT_ERR_PDID:
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case TPT_ERR_QPID:
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case TPT_ERR_ACCESS:
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case TPT_ERR_WRAP:
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case TPT_ERR_BOUND:
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case TPT_ERR_INVALIDATE_SHARED_MR:
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case TPT_ERR_INVALIDATE_MR_WITH_MW_BOUND:
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post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_ACCESS_ERR, 1);
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break;
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/* Device Fatal Errors */
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case TPT_ERR_ECC:
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case TPT_ERR_ECC_PSTAG:
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case TPT_ERR_INTERNAL_ERR:
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post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_DEVICE_FATAL, 1);
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break;
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/* QP Fatal Errors */
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case TPT_ERR_OUT_OF_RQE:
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case TPT_ERR_PBL_ADDR_BOUND:
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case TPT_ERR_CRC:
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case TPT_ERR_MARKER:
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case TPT_ERR_PDU_LEN_ERR:
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case TPT_ERR_DDP_VERSION:
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case TPT_ERR_RDMA_VERSION:
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case TPT_ERR_OPCODE:
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case TPT_ERR_DDP_QUEUE_NUM:
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case TPT_ERR_MSN:
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case TPT_ERR_TBIT:
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case TPT_ERR_MO:
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case TPT_ERR_MSN_GAP:
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case TPT_ERR_MSN_RANGE:
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case TPT_ERR_RQE_ADDR_BOUND:
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case TPT_ERR_IRD_OVERFLOW:
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post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1);
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break;
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default:
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pr_err("Unknown T3 status 0x%x QPID 0x%x\n",
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CQE_STATUS(rsp_msg->cqe), qhp->wq.qpid);
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post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1);
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break;
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}
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done:
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if (atomic_dec_and_test(&chp->refcnt))
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wake_up(&chp->wait);
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iwch_qp_rem_ref(&qhp->ibqp);
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out:
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dev_kfree_skb_irq(skb);
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}
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