a27cbe8782
An asynchronous event carries the port number that the event occurred on, so there's no reason for an IPoIB interface to process an event associated with a different local HCA port. Signed-off-by: Roland Dreier <rolandd@cisco.com>
273 lines
7.3 KiB
C
273 lines
7.3 KiB
C
/*
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* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
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* Copyright (c) 2005 Mellanox Technologies. 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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* $Id: ipoib_verbs.c 1349 2004-12-16 21:09:43Z roland $
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*/
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#include <rdma/ib_cache.h>
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#include "ipoib.h"
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int ipoib_mcast_attach(struct net_device *dev, u16 mlid, union ib_gid *mgid)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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struct ib_qp_attr *qp_attr;
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int ret;
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u16 pkey_index;
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ret = -ENOMEM;
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qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL);
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if (!qp_attr)
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goto out;
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if (ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) {
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clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
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ret = -ENXIO;
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goto out;
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}
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set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
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/* set correct QKey for QP */
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qp_attr->qkey = priv->qkey;
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ret = ib_modify_qp(priv->qp, qp_attr, IB_QP_QKEY);
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if (ret) {
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ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret);
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goto out;
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}
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/* attach QP to multicast group */
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mutex_lock(&priv->mcast_mutex);
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ret = ib_attach_mcast(priv->qp, mgid, mlid);
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mutex_unlock(&priv->mcast_mutex);
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if (ret)
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ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret);
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out:
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kfree(qp_attr);
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return ret;
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}
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int ipoib_mcast_detach(struct net_device *dev, u16 mlid, union ib_gid *mgid)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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int ret;
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mutex_lock(&priv->mcast_mutex);
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ret = ib_detach_mcast(priv->qp, mgid, mlid);
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mutex_unlock(&priv->mcast_mutex);
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if (ret)
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ipoib_warn(priv, "ib_detach_mcast failed (result = %d)\n", ret);
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return ret;
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}
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int ipoib_init_qp(struct net_device *dev)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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int ret;
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u16 pkey_index;
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struct ib_qp_attr qp_attr;
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int attr_mask;
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/*
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* Search through the port P_Key table for the requested pkey value.
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* The port has to be assigned to the respective IB partition in
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* advance.
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*/
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ret = ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index);
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if (ret) {
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clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
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return ret;
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}
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set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
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qp_attr.qp_state = IB_QPS_INIT;
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qp_attr.qkey = 0;
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qp_attr.port_num = priv->port;
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qp_attr.pkey_index = pkey_index;
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attr_mask =
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IB_QP_QKEY |
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IB_QP_PORT |
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IB_QP_PKEY_INDEX |
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IB_QP_STATE;
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ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
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if (ret) {
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ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret);
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goto out_fail;
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}
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qp_attr.qp_state = IB_QPS_RTR;
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/* Can't set this in a INIT->RTR transition */
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attr_mask &= ~IB_QP_PORT;
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ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
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if (ret) {
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ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret);
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goto out_fail;
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}
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qp_attr.qp_state = IB_QPS_RTS;
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qp_attr.sq_psn = 0;
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attr_mask |= IB_QP_SQ_PSN;
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attr_mask &= ~IB_QP_PKEY_INDEX;
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ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask);
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if (ret) {
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ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret);
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goto out_fail;
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}
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return 0;
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out_fail:
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qp_attr.qp_state = IB_QPS_RESET;
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if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE))
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ipoib_warn(priv, "Failed to modify QP to RESET state\n");
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return ret;
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}
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int ipoib_transport_dev_init(struct net_device *dev, struct ib_device *ca)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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struct ib_qp_init_attr init_attr = {
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.cap = {
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.max_send_wr = ipoib_sendq_size,
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.max_recv_wr = ipoib_recvq_size,
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.max_send_sge = 1,
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.max_recv_sge = 1
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},
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.sq_sig_type = IB_SIGNAL_ALL_WR,
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.qp_type = IB_QPT_UD
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};
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int ret, size;
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priv->pd = ib_alloc_pd(priv->ca);
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if (IS_ERR(priv->pd)) {
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printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name);
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return -ENODEV;
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}
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priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE);
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if (IS_ERR(priv->mr)) {
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printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name);
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goto out_free_pd;
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}
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size = ipoib_sendq_size + ipoib_recvq_size + 1;
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ret = ipoib_cm_dev_init(dev);
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if (!ret)
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size += ipoib_recvq_size;
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priv->cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, dev, size);
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if (IS_ERR(priv->cq)) {
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printk(KERN_WARNING "%s: failed to create CQ\n", ca->name);
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goto out_free_mr;
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}
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if (ib_req_notify_cq(priv->cq, IB_CQ_NEXT_COMP))
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goto out_free_cq;
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init_attr.send_cq = priv->cq;
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init_attr.recv_cq = priv->cq,
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priv->qp = ib_create_qp(priv->pd, &init_attr);
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if (IS_ERR(priv->qp)) {
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printk(KERN_WARNING "%s: failed to create QP\n", ca->name);
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goto out_free_cq;
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}
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priv->dev->dev_addr[1] = (priv->qp->qp_num >> 16) & 0xff;
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priv->dev->dev_addr[2] = (priv->qp->qp_num >> 8) & 0xff;
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priv->dev->dev_addr[3] = (priv->qp->qp_num ) & 0xff;
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priv->tx_sge.lkey = priv->mr->lkey;
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priv->tx_wr.opcode = IB_WR_SEND;
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priv->tx_wr.sg_list = &priv->tx_sge;
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priv->tx_wr.num_sge = 1;
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priv->tx_wr.send_flags = IB_SEND_SIGNALED;
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return 0;
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out_free_cq:
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ib_destroy_cq(priv->cq);
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out_free_mr:
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ib_dereg_mr(priv->mr);
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out_free_pd:
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ib_dealloc_pd(priv->pd);
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return -ENODEV;
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}
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void ipoib_transport_dev_cleanup(struct net_device *dev)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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if (priv->qp) {
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if (ib_destroy_qp(priv->qp))
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ipoib_warn(priv, "ib_qp_destroy failed\n");
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priv->qp = NULL;
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clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
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}
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if (ib_destroy_cq(priv->cq))
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ipoib_warn(priv, "ib_cq_destroy failed\n");
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ipoib_cm_dev_cleanup(dev);
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if (ib_dereg_mr(priv->mr))
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ipoib_warn(priv, "ib_dereg_mr failed\n");
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if (ib_dealloc_pd(priv->pd))
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ipoib_warn(priv, "ib_dealloc_pd failed\n");
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}
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void ipoib_event(struct ib_event_handler *handler,
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struct ib_event *record)
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{
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struct ipoib_dev_priv *priv =
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container_of(handler, struct ipoib_dev_priv, event_handler);
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if ((record->event == IB_EVENT_PORT_ERR ||
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record->event == IB_EVENT_PKEY_CHANGE ||
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record->event == IB_EVENT_PORT_ACTIVE ||
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record->event == IB_EVENT_LID_CHANGE ||
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record->event == IB_EVENT_SM_CHANGE ||
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record->event == IB_EVENT_CLIENT_REREGISTER) &&
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record->element.port_num == priv->port) {
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ipoib_dbg(priv, "Port state change event\n");
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queue_work(ipoib_workqueue, &priv->flush_task);
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}
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}
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