2005-04-17 06:20:36 +08:00
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/*
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* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
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2005-08-11 14:03:10 +08:00
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* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2005 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2004, 2005 Voltaire, Inc. All rights reserved.
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2005-04-17 06:20:36 +08:00
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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_ib.c 1386 2004-12-27 16:23:17Z roland $
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*/
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#include <linux/delay.h>
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#include <linux/dma-mapping.h>
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2005-08-26 04:40:04 +08:00
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#include <rdma/ib_cache.h>
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2005-04-17 06:20:36 +08:00
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#include "ipoib.h"
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#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
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static int data_debug_level;
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module_param(data_debug_level, int, 0644);
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MODULE_PARM_DESC(data_debug_level,
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"Enable data path debug tracing if > 0");
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#endif
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#define IPOIB_OP_RECV (1ul << 31)
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static DECLARE_MUTEX(pkey_sem);
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struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
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struct ib_pd *pd, struct ib_ah_attr *attr)
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{
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struct ipoib_ah *ah;
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ah = kmalloc(sizeof *ah, GFP_KERNEL);
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if (!ah)
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return NULL;
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ah->dev = dev;
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ah->last_send = 0;
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kref_init(&ah->ref);
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ah->ah = ib_create_ah(pd, attr);
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if (IS_ERR(ah->ah)) {
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kfree(ah);
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ah = NULL;
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} else
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ipoib_dbg(netdev_priv(dev), "Created ah %p\n", ah->ah);
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return ah;
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}
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void ipoib_free_ah(struct kref *kref)
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{
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struct ipoib_ah *ah = container_of(kref, struct ipoib_ah, ref);
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struct ipoib_dev_priv *priv = netdev_priv(ah->dev);
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unsigned long flags;
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2005-07-28 05:41:32 +08:00
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if ((int) priv->tx_tail - (int) ah->last_send >= 0) {
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2005-04-17 06:20:36 +08:00
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ipoib_dbg(priv, "Freeing ah %p\n", ah->ah);
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ib_destroy_ah(ah->ah);
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kfree(ah);
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} else {
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spin_lock_irqsave(&priv->lock, flags);
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list_add_tail(&ah->list, &priv->dead_ahs);
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spin_unlock_irqrestore(&priv->lock, flags);
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}
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}
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static inline int ipoib_ib_receive(struct ipoib_dev_priv *priv,
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unsigned int wr_id,
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dma_addr_t addr)
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{
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struct ib_sge list = {
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.addr = addr,
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.length = IPOIB_BUF_SIZE,
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.lkey = priv->mr->lkey,
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};
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struct ib_recv_wr param = {
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.wr_id = wr_id | IPOIB_OP_RECV,
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.sg_list = &list,
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.num_sge = 1,
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};
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struct ib_recv_wr *bad_wr;
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return ib_post_recv(priv->qp, ¶m, &bad_wr);
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}
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static int ipoib_ib_post_receive(struct net_device *dev, int id)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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struct sk_buff *skb;
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dma_addr_t addr;
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int ret;
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skb = dev_alloc_skb(IPOIB_BUF_SIZE + 4);
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if (!skb) {
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ipoib_warn(priv, "failed to allocate receive buffer\n");
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priv->rx_ring[id].skb = NULL;
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return -ENOMEM;
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}
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skb_reserve(skb, 4); /* 16 byte align IP header */
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priv->rx_ring[id].skb = skb;
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addr = dma_map_single(priv->ca->dma_device,
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skb->data, IPOIB_BUF_SIZE,
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DMA_FROM_DEVICE);
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pci_unmap_addr_set(&priv->rx_ring[id], mapping, addr);
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ret = ipoib_ib_receive(priv, id, addr);
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if (ret) {
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ipoib_warn(priv, "ipoib_ib_receive failed for buf %d (%d)\n",
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id, ret);
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dma_unmap_single(priv->ca->dma_device, addr,
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IPOIB_BUF_SIZE, DMA_FROM_DEVICE);
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dev_kfree_skb_any(skb);
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priv->rx_ring[id].skb = NULL;
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}
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return ret;
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}
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static int ipoib_ib_post_receives(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 i;
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for (i = 0; i < IPOIB_RX_RING_SIZE; ++i) {
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if (ipoib_ib_post_receive(dev, i)) {
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ipoib_warn(priv, "ipoib_ib_post_receive failed for buf %d\n", i);
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return -EIO;
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}
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}
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return 0;
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}
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static void ipoib_ib_handle_wc(struct net_device *dev,
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struct ib_wc *wc)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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unsigned int wr_id = wc->wr_id;
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ipoib_dbg_data(priv, "called: id %d, op %d, status: %d\n",
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wr_id, wc->opcode, wc->status);
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if (wr_id & IPOIB_OP_RECV) {
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wr_id &= ~IPOIB_OP_RECV;
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if (wr_id < IPOIB_RX_RING_SIZE) {
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struct sk_buff *skb = priv->rx_ring[wr_id].skb;
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priv->rx_ring[wr_id].skb = NULL;
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dma_unmap_single(priv->ca->dma_device,
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pci_unmap_addr(&priv->rx_ring[wr_id],
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mapping),
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IPOIB_BUF_SIZE,
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DMA_FROM_DEVICE);
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if (wc->status != IB_WC_SUCCESS) {
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if (wc->status != IB_WC_WR_FLUSH_ERR)
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ipoib_warn(priv, "failed recv event "
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"(status=%d, wrid=%d vend_err %x)\n",
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wc->status, wr_id, wc->vendor_err);
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dev_kfree_skb_any(skb);
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return;
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}
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ipoib_dbg_data(priv, "received %d bytes, SLID 0x%04x\n",
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wc->byte_len, wc->slid);
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skb_put(skb, wc->byte_len);
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skb_pull(skb, IB_GRH_BYTES);
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if (wc->slid != priv->local_lid ||
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wc->src_qp != priv->qp->qp_num) {
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skb->protocol = ((struct ipoib_header *) skb->data)->proto;
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2005-04-17 06:26:05 +08:00
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skb->mac.raw = skb->data;
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2005-04-17 06:20:36 +08:00
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skb_pull(skb, IPOIB_ENCAP_LEN);
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dev->last_rx = jiffies;
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++priv->stats.rx_packets;
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priv->stats.rx_bytes += skb->len;
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skb->dev = dev;
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/* XXX get correct PACKET_ type here */
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skb->pkt_type = PACKET_HOST;
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netif_rx_ni(skb);
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} else {
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ipoib_dbg_data(priv, "dropping loopback packet\n");
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dev_kfree_skb_any(skb);
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}
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/* repost receive */
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if (ipoib_ib_post_receive(dev, wr_id))
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ipoib_warn(priv, "ipoib_ib_post_receive failed "
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"for buf %d\n", wr_id);
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} else
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ipoib_warn(priv, "completion event with wrid %d\n",
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wr_id);
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} else {
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struct ipoib_buf *tx_req;
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unsigned long flags;
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if (wr_id >= IPOIB_TX_RING_SIZE) {
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ipoib_warn(priv, "completion event with wrid %d (> %d)\n",
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wr_id, IPOIB_TX_RING_SIZE);
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return;
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}
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ipoib_dbg_data(priv, "send complete, wrid %d\n", wr_id);
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tx_req = &priv->tx_ring[wr_id];
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dma_unmap_single(priv->ca->dma_device,
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pci_unmap_addr(tx_req, mapping),
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tx_req->skb->len,
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DMA_TO_DEVICE);
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++priv->stats.tx_packets;
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priv->stats.tx_bytes += tx_req->skb->len;
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dev_kfree_skb_any(tx_req->skb);
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spin_lock_irqsave(&priv->tx_lock, flags);
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++priv->tx_tail;
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if (netif_queue_stopped(dev) &&
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priv->tx_head - priv->tx_tail <= IPOIB_TX_RING_SIZE / 2)
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netif_wake_queue(dev);
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spin_unlock_irqrestore(&priv->tx_lock, flags);
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if (wc->status != IB_WC_SUCCESS &&
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wc->status != IB_WC_WR_FLUSH_ERR)
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ipoib_warn(priv, "failed send event "
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"(status=%d, wrid=%d vend_err %x)\n",
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wc->status, wr_id, wc->vendor_err);
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}
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}
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void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr)
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{
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struct net_device *dev = (struct net_device *) dev_ptr;
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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int n, i;
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ib_req_notify_cq(cq, IB_CQ_NEXT_COMP);
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do {
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n = ib_poll_cq(cq, IPOIB_NUM_WC, priv->ibwc);
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for (i = 0; i < n; ++i)
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ipoib_ib_handle_wc(dev, priv->ibwc + i);
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} while (n == IPOIB_NUM_WC);
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}
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static inline int post_send(struct ipoib_dev_priv *priv,
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unsigned int wr_id,
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struct ib_ah *address, u32 qpn,
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dma_addr_t addr, int len)
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{
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struct ib_send_wr *bad_wr;
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priv->tx_sge.addr = addr;
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priv->tx_sge.length = len;
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priv->tx_wr.wr_id = wr_id;
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priv->tx_wr.wr.ud.remote_qpn = qpn;
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priv->tx_wr.wr.ud.ah = address;
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return ib_post_send(priv->qp, &priv->tx_wr, &bad_wr);
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}
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void ipoib_send(struct net_device *dev, struct sk_buff *skb,
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struct ipoib_ah *address, u32 qpn)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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struct ipoib_buf *tx_req;
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dma_addr_t addr;
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if (skb->len > dev->mtu + INFINIBAND_ALEN) {
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ipoib_warn(priv, "packet len %d (> %d) too long to send, dropping\n",
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skb->len, dev->mtu + INFINIBAND_ALEN);
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++priv->stats.tx_dropped;
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++priv->stats.tx_errors;
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dev_kfree_skb_any(skb);
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return;
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}
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ipoib_dbg_data(priv, "sending packet, length=%d address=%p qpn=0x%06x\n",
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skb->len, address, qpn);
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/*
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* We put the skb into the tx_ring _before_ we call post_send()
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* because it's entirely possible that the completion handler will
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* run before we execute anything after the post_send(). That
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* means we have to make sure everything is properly recorded and
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* our state is consistent before we call post_send().
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*/
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tx_req = &priv->tx_ring[priv->tx_head & (IPOIB_TX_RING_SIZE - 1)];
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tx_req->skb = skb;
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addr = dma_map_single(priv->ca->dma_device, skb->data, skb->len,
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DMA_TO_DEVICE);
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pci_unmap_addr_set(tx_req, mapping, addr);
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if (unlikely(post_send(priv, priv->tx_head & (IPOIB_TX_RING_SIZE - 1),
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address->ah, qpn, addr, skb->len))) {
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ipoib_warn(priv, "post_send failed\n");
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++priv->stats.tx_errors;
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dma_unmap_single(priv->ca->dma_device, addr, skb->len,
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DMA_TO_DEVICE);
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dev_kfree_skb_any(skb);
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} else {
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dev->trans_start = jiffies;
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address->last_send = priv->tx_head;
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++priv->tx_head;
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if (priv->tx_head - priv->tx_tail == IPOIB_TX_RING_SIZE) {
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ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n");
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netif_stop_queue(dev);
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}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __ipoib_reap_ah(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
struct ipoib_ah *ah, *tah;
|
|
|
|
LIST_HEAD(remove_list);
|
|
|
|
|
|
|
|
spin_lock_irq(&priv->lock);
|
|
|
|
list_for_each_entry_safe(ah, tah, &priv->dead_ahs, list)
|
2005-07-28 05:41:32 +08:00
|
|
|
if ((int) priv->tx_tail - (int) ah->last_send >= 0) {
|
2005-04-17 06:20:36 +08:00
|
|
|
list_del(&ah->list);
|
|
|
|
list_add_tail(&ah->list, &remove_list);
|
|
|
|
}
|
|
|
|
spin_unlock_irq(&priv->lock);
|
|
|
|
|
|
|
|
list_for_each_entry_safe(ah, tah, &remove_list, list) {
|
|
|
|
ipoib_dbg(priv, "Reaping ah %p\n", ah->ah);
|
|
|
|
ib_destroy_ah(ah->ah);
|
|
|
|
kfree(ah);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_reap_ah(void *dev_ptr)
|
|
|
|
{
|
|
|
|
struct net_device *dev = dev_ptr;
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
__ipoib_reap_ah(dev);
|
|
|
|
|
|
|
|
if (!test_bit(IPOIB_STOP_REAPER, &priv->flags))
|
|
|
|
queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task, HZ);
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_ib_dev_open(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = ipoib_qp_create(dev);
|
|
|
|
if (ret) {
|
|
|
|
ipoib_warn(priv, "ipoib_qp_create returned %d\n", ret);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = ipoib_ib_post_receives(dev);
|
|
|
|
if (ret) {
|
|
|
|
ipoib_warn(priv, "ipoib_ib_post_receives returned %d\n", ret);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
clear_bit(IPOIB_STOP_REAPER, &priv->flags);
|
|
|
|
queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task, HZ);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_ib_dev_up(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
set_bit(IPOIB_FLAG_OPER_UP, &priv->flags);
|
|
|
|
|
|
|
|
return ipoib_mcast_start_thread(dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_ib_dev_down(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
ipoib_dbg(priv, "downing ib_dev\n");
|
|
|
|
|
|
|
|
clear_bit(IPOIB_FLAG_OPER_UP, &priv->flags);
|
|
|
|
netif_carrier_off(dev);
|
|
|
|
|
|
|
|
/* Shutdown the P_Key thread if still active */
|
|
|
|
if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) {
|
|
|
|
down(&pkey_sem);
|
|
|
|
set_bit(IPOIB_PKEY_STOP, &priv->flags);
|
|
|
|
cancel_delayed_work(&priv->pkey_task);
|
|
|
|
up(&pkey_sem);
|
|
|
|
flush_workqueue(ipoib_workqueue);
|
|
|
|
}
|
|
|
|
|
|
|
|
ipoib_mcast_stop_thread(dev);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Flush the multicast groups first so we stop any multicast joins. The
|
|
|
|
* completion thread may have already died and we may deadlock waiting
|
|
|
|
* for the completion thread to finish some multicast joins.
|
|
|
|
*/
|
|
|
|
ipoib_mcast_dev_flush(dev);
|
|
|
|
|
|
|
|
/* Delete broadcast and local addresses since they will be recreated */
|
|
|
|
ipoib_mcast_dev_down(dev);
|
|
|
|
|
|
|
|
ipoib_flush_paths(dev);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int recvs_pending(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
int pending = 0;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < IPOIB_RX_RING_SIZE; ++i)
|
|
|
|
if (priv->rx_ring[i].skb)
|
|
|
|
++pending;
|
|
|
|
|
|
|
|
return pending;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_ib_dev_stop(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
struct ib_qp_attr qp_attr;
|
|
|
|
int attr_mask;
|
|
|
|
unsigned long begin;
|
|
|
|
struct ipoib_buf *tx_req;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
/* Kill the existing QP and allocate a new one */
|
|
|
|
qp_attr.qp_state = IB_QPS_ERR;
|
|
|
|
attr_mask = IB_QP_STATE;
|
|
|
|
if (ib_modify_qp(priv->qp, &qp_attr, attr_mask))
|
|
|
|
ipoib_warn(priv, "Failed to modify QP to ERROR state\n");
|
|
|
|
|
|
|
|
/* Wait for all sends and receives to complete */
|
|
|
|
begin = jiffies;
|
|
|
|
|
|
|
|
while (priv->tx_head != priv->tx_tail || recvs_pending(dev)) {
|
|
|
|
if (time_after(jiffies, begin + 5 * HZ)) {
|
|
|
|
ipoib_warn(priv, "timing out; %d sends %d receives not completed\n",
|
|
|
|
priv->tx_head - priv->tx_tail, recvs_pending(dev));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* assume the HW is wedged and just free up
|
|
|
|
* all our pending work requests.
|
|
|
|
*/
|
2005-07-28 05:41:32 +08:00
|
|
|
while ((int) priv->tx_tail - (int) priv->tx_head < 0) {
|
2005-04-17 06:20:36 +08:00
|
|
|
tx_req = &priv->tx_ring[priv->tx_tail &
|
|
|
|
(IPOIB_TX_RING_SIZE - 1)];
|
|
|
|
dma_unmap_single(priv->ca->dma_device,
|
|
|
|
pci_unmap_addr(tx_req, mapping),
|
|
|
|
tx_req->skb->len,
|
|
|
|
DMA_TO_DEVICE);
|
|
|
|
dev_kfree_skb_any(tx_req->skb);
|
|
|
|
++priv->tx_tail;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < IPOIB_RX_RING_SIZE; ++i)
|
|
|
|
if (priv->rx_ring[i].skb) {
|
|
|
|
dma_unmap_single(priv->ca->dma_device,
|
|
|
|
pci_unmap_addr(&priv->rx_ring[i],
|
|
|
|
mapping),
|
|
|
|
IPOIB_BUF_SIZE,
|
|
|
|
DMA_FROM_DEVICE);
|
|
|
|
dev_kfree_skb_any(priv->rx_ring[i].skb);
|
|
|
|
priv->rx_ring[i].skb = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
goto timeout;
|
|
|
|
}
|
|
|
|
|
|
|
|
msleep(1);
|
|
|
|
}
|
|
|
|
|
|
|
|
ipoib_dbg(priv, "All sends and receives done.\n");
|
|
|
|
|
|
|
|
timeout:
|
|
|
|
qp_attr.qp_state = IB_QPS_RESET;
|
|
|
|
attr_mask = IB_QP_STATE;
|
|
|
|
if (ib_modify_qp(priv->qp, &qp_attr, attr_mask))
|
|
|
|
ipoib_warn(priv, "Failed to modify QP to RESET state\n");
|
|
|
|
|
|
|
|
/* Wait for all AHs to be reaped */
|
|
|
|
set_bit(IPOIB_STOP_REAPER, &priv->flags);
|
|
|
|
cancel_delayed_work(&priv->ah_reap_task);
|
|
|
|
flush_workqueue(ipoib_workqueue);
|
|
|
|
|
|
|
|
begin = jiffies;
|
|
|
|
|
|
|
|
while (!list_empty(&priv->dead_ahs)) {
|
|
|
|
__ipoib_reap_ah(dev);
|
|
|
|
|
|
|
|
if (time_after(jiffies, begin + HZ)) {
|
|
|
|
ipoib_warn(priv, "timing out; will leak address handles\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
msleep(1);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
priv->ca = ca;
|
|
|
|
priv->port = port;
|
|
|
|
priv->qp = NULL;
|
|
|
|
|
|
|
|
if (ipoib_transport_dev_init(dev, ca)) {
|
|
|
|
printk(KERN_WARNING "%s: ipoib_transport_dev_init failed\n", ca->name);
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (dev->flags & IFF_UP) {
|
|
|
|
if (ipoib_ib_dev_open(dev)) {
|
|
|
|
ipoib_transport_dev_cleanup(dev);
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_ib_dev_flush(void *_dev)
|
|
|
|
{
|
|
|
|
struct net_device *dev = (struct net_device *)_dev;
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev), *cpriv;
|
|
|
|
|
|
|
|
if (!test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
|
|
|
|
return;
|
|
|
|
|
|
|
|
ipoib_dbg(priv, "flushing\n");
|
|
|
|
|
|
|
|
ipoib_ib_dev_down(dev);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The device could have been brought down between the start and when
|
|
|
|
* we get here, don't bring it back up if it's not configured up
|
|
|
|
*/
|
|
|
|
if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
|
|
|
|
ipoib_ib_dev_up(dev);
|
|
|
|
|
|
|
|
/* Flush any child interfaces too */
|
|
|
|
list_for_each_entry(cpriv, &priv->child_intfs, list)
|
|
|
|
ipoib_ib_dev_flush(&cpriv->dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_ib_dev_cleanup(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
ipoib_dbg(priv, "cleaning up ib_dev\n");
|
|
|
|
|
|
|
|
ipoib_mcast_stop_thread(dev);
|
|
|
|
|
|
|
|
/* Delete the broadcast address and the local address */
|
|
|
|
ipoib_mcast_dev_down(dev);
|
|
|
|
|
|
|
|
ipoib_transport_dev_cleanup(dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Delayed P_Key Assigment Interim Support
|
|
|
|
*
|
|
|
|
* The following is initial implementation of delayed P_Key assigment
|
|
|
|
* mechanism. It is using the same approach implemented for the multicast
|
|
|
|
* group join. The single goal of this implementation is to quickly address
|
|
|
|
* Bug #2507. This implementation will probably be removed when the P_Key
|
|
|
|
* change async notification is available.
|
|
|
|
*/
|
|
|
|
int ipoib_open(struct net_device *dev);
|
|
|
|
|
|
|
|
static void ipoib_pkey_dev_check_presence(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
u16 pkey_index = 0;
|
|
|
|
|
|
|
|
if (ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index))
|
|
|
|
clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
|
|
|
|
else
|
|
|
|
set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_pkey_poll(void *dev_ptr)
|
|
|
|
{
|
|
|
|
struct net_device *dev = dev_ptr;
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
ipoib_pkey_dev_check_presence(dev);
|
|
|
|
|
|
|
|
if (test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags))
|
|
|
|
ipoib_open(dev);
|
|
|
|
else {
|
|
|
|
down(&pkey_sem);
|
|
|
|
if (!test_bit(IPOIB_PKEY_STOP, &priv->flags))
|
|
|
|
queue_delayed_work(ipoib_workqueue,
|
|
|
|
&priv->pkey_task,
|
|
|
|
HZ);
|
|
|
|
up(&pkey_sem);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_pkey_dev_delay_open(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
/* Look for the interface pkey value in the IB Port P_Key table and */
|
|
|
|
/* set the interface pkey assigment flag */
|
|
|
|
ipoib_pkey_dev_check_presence(dev);
|
|
|
|
|
|
|
|
/* P_Key value not assigned yet - start polling */
|
|
|
|
if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) {
|
|
|
|
down(&pkey_sem);
|
|
|
|
clear_bit(IPOIB_PKEY_STOP, &priv->flags);
|
|
|
|
queue_delayed_work(ipoib_workqueue,
|
|
|
|
&priv->pkey_task,
|
|
|
|
HZ);
|
|
|
|
up(&pkey_sem);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|