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1312 lines
33 KiB
1312 lines
33 KiB
/* |
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* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. |
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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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* |
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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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|
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#include <linux/delay.h> |
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#include <linux/moduleparam.h> |
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#include <linux/dma-mapping.h> |
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#include <linux/slab.h> |
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|
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#include <linux/ip.h> |
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#include <linux/tcp.h> |
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#include <rdma/ib_cache.h> |
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|
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#include "ipoib.h" |
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|
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#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA |
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static int data_debug_level; |
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|
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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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|
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struct ipoib_ah *ipoib_create_ah(struct net_device *dev, |
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struct ib_pd *pd, struct rdma_ah_attr *attr) |
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{ |
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struct ipoib_ah *ah; |
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struct ib_ah *vah; |
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|
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ah = kmalloc(sizeof(*ah), GFP_KERNEL); |
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if (!ah) |
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return ERR_PTR(-ENOMEM); |
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|
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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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vah = rdma_create_ah(pd, attr, RDMA_CREATE_AH_SLEEPABLE); |
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if (IS_ERR(vah)) { |
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kfree(ah); |
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ah = (struct ipoib_ah *)vah; |
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} else { |
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ah->ah = vah; |
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ipoib_dbg(ipoib_priv(dev), "Created ah %p\n", ah->ah); |
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} |
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|
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return ah; |
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} |
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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 = ipoib_priv(ah->dev); |
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|
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unsigned long flags; |
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|
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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 void ipoib_ud_dma_unmap_rx(struct ipoib_dev_priv *priv, |
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u64 mapping[IPOIB_UD_RX_SG]) |
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{ |
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ib_dma_unmap_single(priv->ca, mapping[0], |
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IPOIB_UD_BUF_SIZE(priv->max_ib_mtu), |
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DMA_FROM_DEVICE); |
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} |
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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 = ipoib_priv(dev); |
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int ret; |
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|
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priv->rx_wr.wr_id = id | IPOIB_OP_RECV; |
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priv->rx_sge[0].addr = priv->rx_ring[id].mapping[0]; |
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priv->rx_sge[1].addr = priv->rx_ring[id].mapping[1]; |
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|
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|
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ret = ib_post_recv(priv->qp, &priv->rx_wr, NULL); |
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if (unlikely(ret)) { |
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ipoib_warn(priv, "receive failed for buf %d (%d)\n", id, ret); |
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ipoib_ud_dma_unmap_rx(priv, priv->rx_ring[id].mapping); |
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dev_kfree_skb_any(priv->rx_ring[id].skb); |
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priv->rx_ring[id].skb = NULL; |
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} |
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|
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return ret; |
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} |
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|
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static struct sk_buff *ipoib_alloc_rx_skb(struct net_device *dev, int id) |
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{ |
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struct ipoib_dev_priv *priv = ipoib_priv(dev); |
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struct sk_buff *skb; |
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int buf_size; |
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u64 *mapping; |
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|
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buf_size = IPOIB_UD_BUF_SIZE(priv->max_ib_mtu); |
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|
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skb = dev_alloc_skb(buf_size + IPOIB_HARD_LEN); |
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if (unlikely(!skb)) |
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return NULL; |
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|
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/* |
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* the IP header will be at IPOIP_HARD_LEN + IB_GRH_BYTES, that is |
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* 64 bytes aligned |
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*/ |
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skb_reserve(skb, sizeof(struct ipoib_pseudo_header)); |
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|
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mapping = priv->rx_ring[id].mapping; |
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mapping[0] = ib_dma_map_single(priv->ca, skb->data, buf_size, |
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DMA_FROM_DEVICE); |
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if (unlikely(ib_dma_mapping_error(priv->ca, mapping[0]))) |
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goto error; |
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|
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priv->rx_ring[id].skb = skb; |
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return skb; |
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error: |
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dev_kfree_skb_any(skb); |
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return NULL; |
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} |
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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 = ipoib_priv(dev); |
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int i; |
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|
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for (i = 0; i < ipoib_recvq_size; ++i) { |
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if (!ipoib_alloc_rx_skb(dev, i)) { |
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ipoib_warn(priv, "failed to allocate receive buffer %d\n", i); |
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return -ENOMEM; |
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} |
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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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|
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return 0; |
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} |
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|
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static void ipoib_ib_handle_rx_wc(struct net_device *dev, struct ib_wc *wc) |
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{ |
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struct ipoib_dev_priv *priv = ipoib_priv(dev); |
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unsigned int wr_id = wc->wr_id & ~IPOIB_OP_RECV; |
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struct sk_buff *skb; |
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u64 mapping[IPOIB_UD_RX_SG]; |
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union ib_gid *dgid; |
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union ib_gid *sgid; |
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|
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ipoib_dbg_data(priv, "recv completion: id %d, status: %d\n", |
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wr_id, wc->status); |
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|
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if (unlikely(wr_id >= ipoib_recvq_size)) { |
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ipoib_warn(priv, "recv completion event with wrid %d (> %d)\n", |
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wr_id, ipoib_recvq_size); |
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return; |
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} |
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|
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skb = priv->rx_ring[wr_id].skb; |
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|
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if (unlikely(wc->status != IB_WC_SUCCESS)) { |
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if (wc->status != IB_WC_WR_FLUSH_ERR) |
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ipoib_warn(priv, |
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"failed recv event (status=%d, wrid=%d vend_err %#x)\n", |
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wc->status, wr_id, wc->vendor_err); |
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ipoib_ud_dma_unmap_rx(priv, priv->rx_ring[wr_id].mapping); |
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dev_kfree_skb_any(skb); |
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priv->rx_ring[wr_id].skb = NULL; |
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return; |
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} |
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|
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memcpy(mapping, priv->rx_ring[wr_id].mapping, |
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IPOIB_UD_RX_SG * sizeof(*mapping)); |
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|
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/* |
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* If we can't allocate a new RX buffer, dump |
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* this packet and reuse the old buffer. |
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*/ |
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if (unlikely(!ipoib_alloc_rx_skb(dev, wr_id))) { |
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++dev->stats.rx_dropped; |
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goto repost; |
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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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|
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ipoib_ud_dma_unmap_rx(priv, mapping); |
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|
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skb_put(skb, wc->byte_len); |
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|
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/* First byte of dgid signals multicast when 0xff */ |
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dgid = &((struct ib_grh *)skb->data)->dgid; |
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|
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if (!(wc->wc_flags & IB_WC_GRH) || dgid->raw[0] != 0xff) |
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skb->pkt_type = PACKET_HOST; |
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else if (memcmp(dgid, dev->broadcast + 4, sizeof(union ib_gid)) == 0) |
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skb->pkt_type = PACKET_BROADCAST; |
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else |
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skb->pkt_type = PACKET_MULTICAST; |
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|
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sgid = &((struct ib_grh *)skb->data)->sgid; |
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|
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/* |
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* Drop packets that this interface sent, ie multicast packets |
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* that the HCA has replicated. |
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*/ |
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if (wc->slid == priv->local_lid && wc->src_qp == priv->qp->qp_num) { |
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int need_repost = 1; |
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|
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if ((wc->wc_flags & IB_WC_GRH) && |
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sgid->global.interface_id != priv->local_gid.global.interface_id) |
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need_repost = 0; |
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|
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if (need_repost) { |
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dev_kfree_skb_any(skb); |
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goto repost; |
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} |
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} |
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skb_pull(skb, IB_GRH_BYTES); |
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|
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skb->protocol = ((struct ipoib_header *) skb->data)->proto; |
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skb_add_pseudo_hdr(skb); |
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|
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++dev->stats.rx_packets; |
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dev->stats.rx_bytes += skb->len; |
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if (skb->pkt_type == PACKET_MULTICAST) |
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dev->stats.multicast++; |
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|
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skb->dev = dev; |
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if ((dev->features & NETIF_F_RXCSUM) && |
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likely(wc->wc_flags & IB_WC_IP_CSUM_OK)) |
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skb->ip_summed = CHECKSUM_UNNECESSARY; |
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|
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napi_gro_receive(&priv->recv_napi, skb); |
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|
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repost: |
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if (unlikely(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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} |
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|
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int ipoib_dma_map_tx(struct ib_device *ca, struct ipoib_tx_buf *tx_req) |
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{ |
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struct sk_buff *skb = tx_req->skb; |
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u64 *mapping = tx_req->mapping; |
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int i; |
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int off; |
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|
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if (skb_headlen(skb)) { |
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mapping[0] = ib_dma_map_single(ca, skb->data, skb_headlen(skb), |
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DMA_TO_DEVICE); |
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if (unlikely(ib_dma_mapping_error(ca, mapping[0]))) |
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return -EIO; |
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|
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off = 1; |
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} else |
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off = 0; |
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|
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for (i = 0; i < skb_shinfo(skb)->nr_frags; ++i) { |
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const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
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mapping[i + off] = ib_dma_map_page(ca, |
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skb_frag_page(frag), |
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skb_frag_off(frag), |
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skb_frag_size(frag), |
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DMA_TO_DEVICE); |
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if (unlikely(ib_dma_mapping_error(ca, mapping[i + off]))) |
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goto partial_error; |
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} |
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return 0; |
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|
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partial_error: |
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for (; i > 0; --i) { |
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const skb_frag_t *frag = &skb_shinfo(skb)->frags[i - 1]; |
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|
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ib_dma_unmap_page(ca, mapping[i - !off], skb_frag_size(frag), DMA_TO_DEVICE); |
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} |
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|
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if (off) |
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ib_dma_unmap_single(ca, mapping[0], skb_headlen(skb), DMA_TO_DEVICE); |
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|
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return -EIO; |
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} |
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|
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void ipoib_dma_unmap_tx(struct ipoib_dev_priv *priv, |
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struct ipoib_tx_buf *tx_req) |
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{ |
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struct sk_buff *skb = tx_req->skb; |
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u64 *mapping = tx_req->mapping; |
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int i; |
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int off; |
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|
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if (skb_headlen(skb)) { |
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ib_dma_unmap_single(priv->ca, mapping[0], skb_headlen(skb), |
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DMA_TO_DEVICE); |
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off = 1; |
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} else |
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off = 0; |
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|
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for (i = 0; i < skb_shinfo(skb)->nr_frags; ++i) { |
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const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
|
|
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ib_dma_unmap_page(priv->ca, mapping[i + off], |
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skb_frag_size(frag), DMA_TO_DEVICE); |
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} |
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} |
|
|
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/* |
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* As the result of a completion error the QP Can be transferred to SQE states. |
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* The function checks if the (send)QP is in SQE state and |
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* moves it back to RTS state, that in order to have it functional again. |
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*/ |
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static void ipoib_qp_state_validate_work(struct work_struct *work) |
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{ |
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struct ipoib_qp_state_validate *qp_work = |
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container_of(work, struct ipoib_qp_state_validate, work); |
|
|
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struct ipoib_dev_priv *priv = qp_work->priv; |
|
struct ib_qp_attr qp_attr; |
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struct ib_qp_init_attr query_init_attr; |
|
int ret; |
|
|
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ret = ib_query_qp(priv->qp, &qp_attr, IB_QP_STATE, &query_init_attr); |
|
if (ret) { |
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ipoib_warn(priv, "%s: Failed to query QP ret: %d\n", |
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__func__, ret); |
|
goto free_res; |
|
} |
|
pr_info("%s: QP: 0x%x is in state: %d\n", |
|
__func__, priv->qp->qp_num, qp_attr.qp_state); |
|
|
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/* currently support only in SQE->RTS transition*/ |
|
if (qp_attr.qp_state == IB_QPS_SQE) { |
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qp_attr.qp_state = IB_QPS_RTS; |
|
|
|
ret = ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE); |
|
if (ret) { |
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pr_warn("failed(%d) modify QP:0x%x SQE->RTS\n", |
|
ret, priv->qp->qp_num); |
|
goto free_res; |
|
} |
|
pr_info("%s: QP: 0x%x moved from IB_QPS_SQE to IB_QPS_RTS\n", |
|
__func__, priv->qp->qp_num); |
|
} else { |
|
pr_warn("QP (%d) will stay in state: %d\n", |
|
priv->qp->qp_num, qp_attr.qp_state); |
|
} |
|
|
|
free_res: |
|
kfree(qp_work); |
|
} |
|
|
|
static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
unsigned int wr_id = wc->wr_id; |
|
struct ipoib_tx_buf *tx_req; |
|
|
|
ipoib_dbg_data(priv, "send completion: id %d, status: %d\n", |
|
wr_id, wc->status); |
|
|
|
if (unlikely(wr_id >= ipoib_sendq_size)) { |
|
ipoib_warn(priv, "send completion event with wrid %d (> %d)\n", |
|
wr_id, ipoib_sendq_size); |
|
return; |
|
} |
|
|
|
tx_req = &priv->tx_ring[wr_id]; |
|
|
|
ipoib_dma_unmap_tx(priv, tx_req); |
|
|
|
++dev->stats.tx_packets; |
|
dev->stats.tx_bytes += tx_req->skb->len; |
|
|
|
dev_kfree_skb_any(tx_req->skb); |
|
|
|
++priv->tx_tail; |
|
++priv->global_tx_tail; |
|
|
|
if (unlikely(netif_queue_stopped(dev) && |
|
((priv->global_tx_head - priv->global_tx_tail) <= |
|
ipoib_sendq_size >> 1) && |
|
test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))) |
|
netif_wake_queue(dev); |
|
|
|
if (wc->status != IB_WC_SUCCESS && |
|
wc->status != IB_WC_WR_FLUSH_ERR) { |
|
struct ipoib_qp_state_validate *qp_work; |
|
ipoib_warn(priv, |
|
"failed send event (status=%d, wrid=%d vend_err %#x)\n", |
|
wc->status, wr_id, wc->vendor_err); |
|
qp_work = kzalloc(sizeof(*qp_work), GFP_ATOMIC); |
|
if (!qp_work) |
|
return; |
|
|
|
INIT_WORK(&qp_work->work, ipoib_qp_state_validate_work); |
|
qp_work->priv = priv; |
|
queue_work(priv->wq, &qp_work->work); |
|
} |
|
} |
|
|
|
static int poll_tx(struct ipoib_dev_priv *priv) |
|
{ |
|
int n, i; |
|
struct ib_wc *wc; |
|
|
|
n = ib_poll_cq(priv->send_cq, MAX_SEND_CQE, priv->send_wc); |
|
for (i = 0; i < n; ++i) { |
|
wc = priv->send_wc + i; |
|
if (wc->wr_id & IPOIB_OP_CM) |
|
ipoib_cm_handle_tx_wc(priv->dev, priv->send_wc + i); |
|
else |
|
ipoib_ib_handle_tx_wc(priv->dev, priv->send_wc + i); |
|
} |
|
return n == MAX_SEND_CQE; |
|
} |
|
|
|
int ipoib_rx_poll(struct napi_struct *napi, int budget) |
|
{ |
|
struct ipoib_dev_priv *priv = |
|
container_of(napi, struct ipoib_dev_priv, recv_napi); |
|
struct net_device *dev = priv->dev; |
|
int done; |
|
int t; |
|
int n, i; |
|
|
|
done = 0; |
|
|
|
poll_more: |
|
while (done < budget) { |
|
int max = (budget - done); |
|
|
|
t = min(IPOIB_NUM_WC, max); |
|
n = ib_poll_cq(priv->recv_cq, t, priv->ibwc); |
|
|
|
for (i = 0; i < n; i++) { |
|
struct ib_wc *wc = priv->ibwc + i; |
|
|
|
if (wc->wr_id & IPOIB_OP_RECV) { |
|
++done; |
|
if (wc->wr_id & IPOIB_OP_CM) |
|
ipoib_cm_handle_rx_wc(dev, wc); |
|
else |
|
ipoib_ib_handle_rx_wc(dev, wc); |
|
} else { |
|
pr_warn("%s: Got unexpected wqe id\n", __func__); |
|
} |
|
} |
|
|
|
if (n != t) |
|
break; |
|
} |
|
|
|
if (done < budget) { |
|
napi_complete(napi); |
|
if (unlikely(ib_req_notify_cq(priv->recv_cq, |
|
IB_CQ_NEXT_COMP | |
|
IB_CQ_REPORT_MISSED_EVENTS)) && |
|
napi_reschedule(napi)) |
|
goto poll_more; |
|
} |
|
|
|
return done; |
|
} |
|
|
|
int ipoib_tx_poll(struct napi_struct *napi, int budget) |
|
{ |
|
struct ipoib_dev_priv *priv = container_of(napi, struct ipoib_dev_priv, |
|
send_napi); |
|
struct net_device *dev = priv->dev; |
|
int n, i; |
|
struct ib_wc *wc; |
|
|
|
poll_more: |
|
n = ib_poll_cq(priv->send_cq, MAX_SEND_CQE, priv->send_wc); |
|
|
|
for (i = 0; i < n; i++) { |
|
wc = priv->send_wc + i; |
|
if (wc->wr_id & IPOIB_OP_CM) |
|
ipoib_cm_handle_tx_wc(dev, wc); |
|
else |
|
ipoib_ib_handle_tx_wc(dev, wc); |
|
} |
|
|
|
if (n < budget) { |
|
napi_complete(napi); |
|
if (unlikely(ib_req_notify_cq(priv->send_cq, IB_CQ_NEXT_COMP | |
|
IB_CQ_REPORT_MISSED_EVENTS)) && |
|
napi_reschedule(napi)) |
|
goto poll_more; |
|
} |
|
return n < 0 ? 0 : n; |
|
} |
|
|
|
void ipoib_ib_rx_completion(struct ib_cq *cq, void *ctx_ptr) |
|
{ |
|
struct ipoib_dev_priv *priv = ctx_ptr; |
|
|
|
napi_schedule(&priv->recv_napi); |
|
} |
|
|
|
void ipoib_ib_tx_completion(struct ib_cq *cq, void *ctx_ptr) |
|
{ |
|
struct ipoib_dev_priv *priv = ctx_ptr; |
|
|
|
napi_schedule(&priv->send_napi); |
|
} |
|
|
|
static inline int post_send(struct ipoib_dev_priv *priv, |
|
unsigned int wr_id, |
|
struct ib_ah *address, u32 dqpn, |
|
struct ipoib_tx_buf *tx_req, |
|
void *head, int hlen) |
|
{ |
|
struct sk_buff *skb = tx_req->skb; |
|
|
|
ipoib_build_sge(priv, tx_req); |
|
|
|
priv->tx_wr.wr.wr_id = wr_id; |
|
priv->tx_wr.remote_qpn = dqpn; |
|
priv->tx_wr.ah = address; |
|
|
|
if (head) { |
|
priv->tx_wr.mss = skb_shinfo(skb)->gso_size; |
|
priv->tx_wr.header = head; |
|
priv->tx_wr.hlen = hlen; |
|
priv->tx_wr.wr.opcode = IB_WR_LSO; |
|
} else |
|
priv->tx_wr.wr.opcode = IB_WR_SEND; |
|
|
|
return ib_post_send(priv->qp, &priv->tx_wr.wr, NULL); |
|
} |
|
|
|
int ipoib_send(struct net_device *dev, struct sk_buff *skb, |
|
struct ib_ah *address, u32 dqpn) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
struct ipoib_tx_buf *tx_req; |
|
int hlen, rc; |
|
void *phead; |
|
unsigned int usable_sge = priv->max_send_sge - !!skb_headlen(skb); |
|
|
|
if (skb_is_gso(skb)) { |
|
hlen = skb_transport_offset(skb) + tcp_hdrlen(skb); |
|
phead = skb->data; |
|
if (unlikely(!skb_pull(skb, hlen))) { |
|
ipoib_warn(priv, "linear data too small\n"); |
|
++dev->stats.tx_dropped; |
|
++dev->stats.tx_errors; |
|
dev_kfree_skb_any(skb); |
|
return -1; |
|
} |
|
} else { |
|
if (unlikely(skb->len > priv->mcast_mtu + IPOIB_ENCAP_LEN)) { |
|
ipoib_warn(priv, "packet len %d (> %d) too long to send, dropping\n", |
|
skb->len, priv->mcast_mtu + IPOIB_ENCAP_LEN); |
|
++dev->stats.tx_dropped; |
|
++dev->stats.tx_errors; |
|
ipoib_cm_skb_too_long(dev, skb, priv->mcast_mtu); |
|
return -1; |
|
} |
|
phead = NULL; |
|
hlen = 0; |
|
} |
|
if (skb_shinfo(skb)->nr_frags > usable_sge) { |
|
if (skb_linearize(skb) < 0) { |
|
ipoib_warn(priv, "skb could not be linearized\n"); |
|
++dev->stats.tx_dropped; |
|
++dev->stats.tx_errors; |
|
dev_kfree_skb_any(skb); |
|
return -1; |
|
} |
|
/* Does skb_linearize return ok without reducing nr_frags? */ |
|
if (skb_shinfo(skb)->nr_frags > usable_sge) { |
|
ipoib_warn(priv, "too many frags after skb linearize\n"); |
|
++dev->stats.tx_dropped; |
|
++dev->stats.tx_errors; |
|
dev_kfree_skb_any(skb); |
|
return -1; |
|
} |
|
} |
|
|
|
ipoib_dbg_data(priv, |
|
"sending packet, length=%d address=%p dqpn=0x%06x\n", |
|
skb->len, address, dqpn); |
|
|
|
/* |
|
* We put the skb into the tx_ring _before_ we call post_send() |
|
* because it's entirely possible that the completion handler will |
|
* run before we execute anything after the post_send(). That |
|
* means we have to make sure everything is properly recorded and |
|
* our state is consistent before we call post_send(). |
|
*/ |
|
tx_req = &priv->tx_ring[priv->tx_head & (ipoib_sendq_size - 1)]; |
|
tx_req->skb = skb; |
|
if (unlikely(ipoib_dma_map_tx(priv->ca, tx_req))) { |
|
++dev->stats.tx_errors; |
|
dev_kfree_skb_any(skb); |
|
return -1; |
|
} |
|
|
|
if (skb->ip_summed == CHECKSUM_PARTIAL) |
|
priv->tx_wr.wr.send_flags |= IB_SEND_IP_CSUM; |
|
else |
|
priv->tx_wr.wr.send_flags &= ~IB_SEND_IP_CSUM; |
|
/* increase the tx_head after send success, but use it for queue state */ |
|
if ((priv->global_tx_head - priv->global_tx_tail) == |
|
ipoib_sendq_size - 1) { |
|
ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n"); |
|
netif_stop_queue(dev); |
|
} |
|
|
|
skb_orphan(skb); |
|
skb_dst_drop(skb); |
|
|
|
if (netif_queue_stopped(dev)) |
|
if (ib_req_notify_cq(priv->send_cq, IB_CQ_NEXT_COMP | |
|
IB_CQ_REPORT_MISSED_EVENTS) < 0) |
|
ipoib_warn(priv, "request notify on send CQ failed\n"); |
|
|
|
rc = post_send(priv, priv->tx_head & (ipoib_sendq_size - 1), |
|
address, dqpn, tx_req, phead, hlen); |
|
if (unlikely(rc)) { |
|
ipoib_warn(priv, "post_send failed, error %d\n", rc); |
|
++dev->stats.tx_errors; |
|
ipoib_dma_unmap_tx(priv, tx_req); |
|
dev_kfree_skb_any(skb); |
|
if (netif_queue_stopped(dev)) |
|
netif_wake_queue(dev); |
|
rc = 0; |
|
} else { |
|
netif_trans_update(dev); |
|
|
|
rc = priv->tx_head; |
|
++priv->tx_head; |
|
++priv->global_tx_head; |
|
} |
|
return rc; |
|
} |
|
|
|
static void ipoib_reap_dead_ahs(struct ipoib_dev_priv *priv) |
|
{ |
|
struct ipoib_ah *ah, *tah; |
|
unsigned long flags; |
|
|
|
netif_tx_lock_bh(priv->dev); |
|
spin_lock_irqsave(&priv->lock, flags); |
|
|
|
list_for_each_entry_safe(ah, tah, &priv->dead_ahs, list) |
|
if ((int) priv->tx_tail - (int) ah->last_send >= 0) { |
|
list_del(&ah->list); |
|
rdma_destroy_ah(ah->ah, 0); |
|
kfree(ah); |
|
} |
|
|
|
spin_unlock_irqrestore(&priv->lock, flags); |
|
netif_tx_unlock_bh(priv->dev); |
|
} |
|
|
|
void ipoib_reap_ah(struct work_struct *work) |
|
{ |
|
struct ipoib_dev_priv *priv = |
|
container_of(work, struct ipoib_dev_priv, ah_reap_task.work); |
|
|
|
ipoib_reap_dead_ahs(priv); |
|
|
|
if (!test_bit(IPOIB_STOP_REAPER, &priv->flags)) |
|
queue_delayed_work(priv->wq, &priv->ah_reap_task, |
|
round_jiffies_relative(HZ)); |
|
} |
|
|
|
static void ipoib_start_ah_reaper(struct ipoib_dev_priv *priv) |
|
{ |
|
clear_bit(IPOIB_STOP_REAPER, &priv->flags); |
|
queue_delayed_work(priv->wq, &priv->ah_reap_task, |
|
round_jiffies_relative(HZ)); |
|
} |
|
|
|
static void ipoib_stop_ah_reaper(struct ipoib_dev_priv *priv) |
|
{ |
|
set_bit(IPOIB_STOP_REAPER, &priv->flags); |
|
cancel_delayed_work(&priv->ah_reap_task); |
|
/* |
|
* After ipoib_stop_ah_reaper() we always go through |
|
* ipoib_reap_dead_ahs() which ensures the work is really stopped and |
|
* does a final flush out of the dead_ah's list |
|
*/ |
|
} |
|
|
|
static int recvs_pending(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
int pending = 0; |
|
int i; |
|
|
|
for (i = 0; i < ipoib_recvq_size; ++i) |
|
if (priv->rx_ring[i].skb) |
|
++pending; |
|
|
|
return pending; |
|
} |
|
|
|
static void check_qp_movement_and_print(struct ipoib_dev_priv *priv, |
|
struct ib_qp *qp, |
|
enum ib_qp_state new_state) |
|
{ |
|
struct ib_qp_attr qp_attr; |
|
struct ib_qp_init_attr query_init_attr; |
|
int ret; |
|
|
|
ret = ib_query_qp(qp, &qp_attr, IB_QP_STATE, &query_init_attr); |
|
if (ret) { |
|
ipoib_warn(priv, "%s: Failed to query QP\n", __func__); |
|
return; |
|
} |
|
/* print according to the new-state and the previous state.*/ |
|
if (new_state == IB_QPS_ERR && qp_attr.qp_state == IB_QPS_RESET) |
|
ipoib_dbg(priv, "Failed modify QP, IB_QPS_RESET to IB_QPS_ERR, acceptable\n"); |
|
else |
|
ipoib_warn(priv, "Failed to modify QP to state: %d from state: %d\n", |
|
new_state, qp_attr.qp_state); |
|
} |
|
|
|
static void ipoib_napi_enable(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
|
|
napi_enable(&priv->recv_napi); |
|
napi_enable(&priv->send_napi); |
|
} |
|
|
|
static void ipoib_napi_disable(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
|
|
napi_disable(&priv->recv_napi); |
|
napi_disable(&priv->send_napi); |
|
} |
|
|
|
int ipoib_ib_dev_stop_default(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
struct ib_qp_attr qp_attr; |
|
unsigned long begin; |
|
struct ipoib_tx_buf *tx_req; |
|
int i; |
|
|
|
if (test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags)) |
|
ipoib_napi_disable(dev); |
|
|
|
ipoib_cm_dev_stop(dev); |
|
|
|
/* |
|
* Move our QP to the error state and then reinitialize in |
|
* when all work requests have completed or have been flushed. |
|
*/ |
|
qp_attr.qp_state = IB_QPS_ERR; |
|
if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) |
|
check_qp_movement_and_print(priv, priv->qp, IB_QPS_ERR); |
|
|
|
/* 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. |
|
*/ |
|
while ((int)priv->tx_tail - (int)priv->tx_head < 0) { |
|
tx_req = &priv->tx_ring[priv->tx_tail & |
|
(ipoib_sendq_size - 1)]; |
|
ipoib_dma_unmap_tx(priv, tx_req); |
|
dev_kfree_skb_any(tx_req->skb); |
|
++priv->tx_tail; |
|
++priv->global_tx_tail; |
|
} |
|
|
|
for (i = 0; i < ipoib_recvq_size; ++i) { |
|
struct ipoib_rx_buf *rx_req; |
|
|
|
rx_req = &priv->rx_ring[i]; |
|
if (!rx_req->skb) |
|
continue; |
|
ipoib_ud_dma_unmap_rx(priv, |
|
priv->rx_ring[i].mapping); |
|
dev_kfree_skb_any(rx_req->skb); |
|
rx_req->skb = NULL; |
|
} |
|
|
|
goto timeout; |
|
} |
|
|
|
ipoib_drain_cq(dev); |
|
|
|
usleep_range(1000, 2000); |
|
} |
|
|
|
ipoib_dbg(priv, "All sends and receives done.\n"); |
|
|
|
timeout: |
|
qp_attr.qp_state = IB_QPS_RESET; |
|
if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) |
|
ipoib_warn(priv, "Failed to modify QP to RESET state\n"); |
|
|
|
ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP); |
|
|
|
return 0; |
|
} |
|
|
|
int ipoib_ib_dev_open_default(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
int ret; |
|
|
|
ret = ipoib_init_qp(dev); |
|
if (ret) { |
|
ipoib_warn(priv, "ipoib_init_qp 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); |
|
goto out; |
|
} |
|
|
|
ret = ipoib_cm_dev_open(dev); |
|
if (ret) { |
|
ipoib_warn(priv, "ipoib_cm_dev_open returned %d\n", ret); |
|
goto out; |
|
} |
|
|
|
if (!test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags)) |
|
ipoib_napi_enable(dev); |
|
|
|
return 0; |
|
out: |
|
return -1; |
|
} |
|
|
|
int ipoib_ib_dev_open(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
|
|
ipoib_pkey_dev_check_presence(dev); |
|
|
|
if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) { |
|
ipoib_warn(priv, "P_Key 0x%04x is %s\n", priv->pkey, |
|
(!(priv->pkey & 0x7fff) ? "Invalid" : "not found")); |
|
return -1; |
|
} |
|
|
|
ipoib_start_ah_reaper(priv); |
|
if (priv->rn_ops->ndo_open(dev)) { |
|
pr_warn("%s: Failed to open dev\n", dev->name); |
|
goto dev_stop; |
|
} |
|
|
|
set_bit(IPOIB_FLAG_INITIALIZED, &priv->flags); |
|
|
|
return 0; |
|
|
|
dev_stop: |
|
ipoib_stop_ah_reaper(priv); |
|
return -1; |
|
} |
|
|
|
void ipoib_ib_dev_stop(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
|
|
priv->rn_ops->ndo_stop(dev); |
|
|
|
clear_bit(IPOIB_FLAG_INITIALIZED, &priv->flags); |
|
ipoib_stop_ah_reaper(priv); |
|
} |
|
|
|
void ipoib_pkey_dev_check_presence(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
struct rdma_netdev *rn = netdev_priv(dev); |
|
|
|
if (!(priv->pkey & 0x7fff) || |
|
ib_find_pkey(priv->ca, priv->port, priv->pkey, |
|
&priv->pkey_index)) { |
|
clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); |
|
} else { |
|
if (rn->set_id) |
|
rn->set_id(dev, priv->pkey_index); |
|
set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); |
|
} |
|
} |
|
|
|
void ipoib_ib_dev_up(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
|
|
ipoib_pkey_dev_check_presence(dev); |
|
|
|
if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) { |
|
ipoib_dbg(priv, "PKEY is not assigned.\n"); |
|
return; |
|
} |
|
|
|
set_bit(IPOIB_FLAG_OPER_UP, &priv->flags); |
|
|
|
ipoib_mcast_start_thread(dev); |
|
} |
|
|
|
void ipoib_ib_dev_down(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
|
|
ipoib_dbg(priv, "downing ib_dev\n"); |
|
|
|
clear_bit(IPOIB_FLAG_OPER_UP, &priv->flags); |
|
netif_carrier_off(dev); |
|
|
|
ipoib_mcast_stop_thread(dev); |
|
ipoib_mcast_dev_flush(dev); |
|
|
|
ipoib_flush_paths(dev); |
|
} |
|
|
|
void ipoib_drain_cq(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
int i, n; |
|
|
|
/* |
|
* We call completion handling routines that expect to be |
|
* called from the BH-disabled NAPI poll context, so disable |
|
* BHs here too. |
|
*/ |
|
local_bh_disable(); |
|
|
|
do { |
|
n = ib_poll_cq(priv->recv_cq, IPOIB_NUM_WC, priv->ibwc); |
|
for (i = 0; i < n; ++i) { |
|
/* |
|
* Convert any successful completions to flush |
|
* errors to avoid passing packets up the |
|
* stack after bringing the device down. |
|
*/ |
|
if (priv->ibwc[i].status == IB_WC_SUCCESS) |
|
priv->ibwc[i].status = IB_WC_WR_FLUSH_ERR; |
|
|
|
if (priv->ibwc[i].wr_id & IPOIB_OP_RECV) { |
|
if (priv->ibwc[i].wr_id & IPOIB_OP_CM) |
|
ipoib_cm_handle_rx_wc(dev, priv->ibwc + i); |
|
else |
|
ipoib_ib_handle_rx_wc(dev, priv->ibwc + i); |
|
} else { |
|
pr_warn("%s: Got unexpected wqe id\n", __func__); |
|
} |
|
} |
|
} while (n == IPOIB_NUM_WC); |
|
|
|
while (poll_tx(priv)) |
|
; /* nothing */ |
|
|
|
local_bh_enable(); |
|
} |
|
|
|
/* |
|
* Takes whatever value which is in pkey index 0 and updates priv->pkey |
|
* returns 0 if the pkey value was changed. |
|
*/ |
|
static inline int update_parent_pkey(struct ipoib_dev_priv *priv) |
|
{ |
|
int result; |
|
u16 prev_pkey; |
|
|
|
prev_pkey = priv->pkey; |
|
result = ib_query_pkey(priv->ca, priv->port, 0, &priv->pkey); |
|
if (result) { |
|
ipoib_warn(priv, "ib_query_pkey port %d failed (ret = %d)\n", |
|
priv->port, result); |
|
return result; |
|
} |
|
|
|
priv->pkey |= 0x8000; |
|
|
|
if (prev_pkey != priv->pkey) { |
|
ipoib_dbg(priv, "pkey changed from 0x%x to 0x%x\n", |
|
prev_pkey, priv->pkey); |
|
/* |
|
* Update the pkey in the broadcast address, while making sure to set |
|
* the full membership bit, so that we join the right broadcast group. |
|
*/ |
|
priv->dev->broadcast[8] = priv->pkey >> 8; |
|
priv->dev->broadcast[9] = priv->pkey & 0xff; |
|
return 0; |
|
} |
|
|
|
return 1; |
|
} |
|
/* |
|
* returns 0 if pkey value was found in a different slot. |
|
*/ |
|
static inline int update_child_pkey(struct ipoib_dev_priv *priv) |
|
{ |
|
u16 old_index = priv->pkey_index; |
|
|
|
priv->pkey_index = 0; |
|
ipoib_pkey_dev_check_presence(priv->dev); |
|
|
|
if (test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags) && |
|
(old_index == priv->pkey_index)) |
|
return 1; |
|
return 0; |
|
} |
|
|
|
/* |
|
* returns true if the device address of the ipoib interface has changed and the |
|
* new address is a valid one (i.e in the gid table), return false otherwise. |
|
*/ |
|
static bool ipoib_dev_addr_changed_valid(struct ipoib_dev_priv *priv) |
|
{ |
|
union ib_gid search_gid; |
|
union ib_gid gid0; |
|
union ib_gid *netdev_gid; |
|
int err; |
|
u16 index; |
|
u8 port; |
|
bool ret = false; |
|
|
|
netdev_gid = (union ib_gid *)(priv->dev->dev_addr + 4); |
|
if (rdma_query_gid(priv->ca, priv->port, 0, &gid0)) |
|
return false; |
|
|
|
netif_addr_lock_bh(priv->dev); |
|
|
|
/* The subnet prefix may have changed, update it now so we won't have |
|
* to do it later |
|
*/ |
|
priv->local_gid.global.subnet_prefix = gid0.global.subnet_prefix; |
|
netdev_gid->global.subnet_prefix = gid0.global.subnet_prefix; |
|
search_gid.global.subnet_prefix = gid0.global.subnet_prefix; |
|
|
|
search_gid.global.interface_id = priv->local_gid.global.interface_id; |
|
|
|
netif_addr_unlock_bh(priv->dev); |
|
|
|
err = ib_find_gid(priv->ca, &search_gid, &port, &index); |
|
|
|
netif_addr_lock_bh(priv->dev); |
|
|
|
if (search_gid.global.interface_id != |
|
priv->local_gid.global.interface_id) |
|
/* There was a change while we were looking up the gid, bail |
|
* here and let the next work sort this out |
|
*/ |
|
goto out; |
|
|
|
/* The next section of code needs some background: |
|
* Per IB spec the port GUID can't change if the HCA is powered on. |
|
* port GUID is the basis for GID at index 0 which is the basis for |
|
* the default device address of a ipoib interface. |
|
* |
|
* so it seems the flow should be: |
|
* if user_changed_dev_addr && gid in gid tbl |
|
* set bit dev_addr_set |
|
* return true |
|
* else |
|
* return false |
|
* |
|
* The issue is that there are devices that don't follow the spec, |
|
* they change the port GUID when the HCA is powered, so in order |
|
* not to break userspace applications, We need to check if the |
|
* user wanted to control the device address and we assume that |
|
* if he sets the device address back to be based on GID index 0, |
|
* he no longer wishs to control it. |
|
* |
|
* If the user doesn't control the the device address, |
|
* IPOIB_FLAG_DEV_ADDR_SET is set and ib_find_gid failed it means |
|
* the port GUID has changed and GID at index 0 has changed |
|
* so we need to change priv->local_gid and priv->dev->dev_addr |
|
* to reflect the new GID. |
|
*/ |
|
if (!test_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags)) { |
|
if (!err && port == priv->port) { |
|
set_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags); |
|
if (index == 0) |
|
clear_bit(IPOIB_FLAG_DEV_ADDR_CTRL, |
|
&priv->flags); |
|
else |
|
set_bit(IPOIB_FLAG_DEV_ADDR_CTRL, &priv->flags); |
|
ret = true; |
|
} else { |
|
ret = false; |
|
} |
|
} else { |
|
if (!err && port == priv->port) { |
|
ret = true; |
|
} else { |
|
if (!test_bit(IPOIB_FLAG_DEV_ADDR_CTRL, &priv->flags)) { |
|
memcpy(&priv->local_gid, &gid0, |
|
sizeof(priv->local_gid)); |
|
memcpy(priv->dev->dev_addr + 4, &gid0, |
|
sizeof(priv->local_gid)); |
|
ret = true; |
|
} |
|
} |
|
} |
|
|
|
out: |
|
netif_addr_unlock_bh(priv->dev); |
|
|
|
return ret; |
|
} |
|
|
|
static void __ipoib_ib_dev_flush(struct ipoib_dev_priv *priv, |
|
enum ipoib_flush_level level, |
|
int nesting) |
|
{ |
|
struct ipoib_dev_priv *cpriv; |
|
struct net_device *dev = priv->dev; |
|
int result; |
|
|
|
down_read_nested(&priv->vlan_rwsem, nesting); |
|
|
|
/* |
|
* Flush any child interfaces too -- they might be up even if |
|
* the parent is down. |
|
*/ |
|
list_for_each_entry(cpriv, &priv->child_intfs, list) |
|
__ipoib_ib_dev_flush(cpriv, level, nesting + 1); |
|
|
|
up_read(&priv->vlan_rwsem); |
|
|
|
if (!test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags) && |
|
level != IPOIB_FLUSH_HEAVY) { |
|
/* Make sure the dev_addr is set even if not flushing */ |
|
if (level == IPOIB_FLUSH_LIGHT) |
|
ipoib_dev_addr_changed_valid(priv); |
|
ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_INITIALIZED not set.\n"); |
|
return; |
|
} |
|
|
|
if (!test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) { |
|
/* interface is down. update pkey and leave. */ |
|
if (level == IPOIB_FLUSH_HEAVY) { |
|
if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) |
|
update_parent_pkey(priv); |
|
else |
|
update_child_pkey(priv); |
|
} else if (level == IPOIB_FLUSH_LIGHT) |
|
ipoib_dev_addr_changed_valid(priv); |
|
ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_ADMIN_UP not set.\n"); |
|
return; |
|
} |
|
|
|
if (level == IPOIB_FLUSH_HEAVY) { |
|
/* child devices chase their origin pkey value, while non-child |
|
* (parent) devices should always takes what present in pkey index 0 |
|
*/ |
|
if (test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) { |
|
result = update_child_pkey(priv); |
|
if (result) { |
|
/* restart QP only if P_Key index is changed */ |
|
ipoib_dbg(priv, "Not flushing - P_Key index not changed.\n"); |
|
return; |
|
} |
|
|
|
} else { |
|
result = update_parent_pkey(priv); |
|
/* restart QP only if P_Key value changed */ |
|
if (result) { |
|
ipoib_dbg(priv, "Not flushing - P_Key value not changed.\n"); |
|
return; |
|
} |
|
} |
|
} |
|
|
|
if (level == IPOIB_FLUSH_LIGHT) { |
|
int oper_up; |
|
ipoib_mark_paths_invalid(dev); |
|
/* Set IPoIB operation as down to prevent races between: |
|
* the flush flow which leaves MCG and on the fly joins |
|
* which can happen during that time. mcast restart task |
|
* should deal with join requests we missed. |
|
*/ |
|
oper_up = test_and_clear_bit(IPOIB_FLAG_OPER_UP, &priv->flags); |
|
ipoib_mcast_dev_flush(dev); |
|
if (oper_up) |
|
set_bit(IPOIB_FLAG_OPER_UP, &priv->flags); |
|
ipoib_reap_dead_ahs(priv); |
|
} |
|
|
|
if (level >= IPOIB_FLUSH_NORMAL) |
|
ipoib_ib_dev_down(dev); |
|
|
|
if (level == IPOIB_FLUSH_HEAVY) { |
|
if (test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags)) |
|
ipoib_ib_dev_stop(dev); |
|
|
|
if (ipoib_ib_dev_open(dev)) |
|
return; |
|
|
|
if (netif_queue_stopped(dev)) |
|
netif_start_queue(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)) { |
|
if (level >= IPOIB_FLUSH_NORMAL) |
|
ipoib_ib_dev_up(dev); |
|
if (ipoib_dev_addr_changed_valid(priv)) |
|
ipoib_mcast_restart_task(&priv->restart_task); |
|
} |
|
} |
|
|
|
void ipoib_ib_dev_flush_light(struct work_struct *work) |
|
{ |
|
struct ipoib_dev_priv *priv = |
|
container_of(work, struct ipoib_dev_priv, flush_light); |
|
|
|
__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_LIGHT, 0); |
|
} |
|
|
|
void ipoib_ib_dev_flush_normal(struct work_struct *work) |
|
{ |
|
struct ipoib_dev_priv *priv = |
|
container_of(work, struct ipoib_dev_priv, flush_normal); |
|
|
|
__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_NORMAL, 0); |
|
} |
|
|
|
void ipoib_ib_dev_flush_heavy(struct work_struct *work) |
|
{ |
|
struct ipoib_dev_priv *priv = |
|
container_of(work, struct ipoib_dev_priv, flush_heavy); |
|
|
|
rtnl_lock(); |
|
__ipoib_ib_dev_flush(priv, IPOIB_FLUSH_HEAVY, 0); |
|
rtnl_unlock(); |
|
} |
|
|
|
void ipoib_ib_dev_cleanup(struct net_device *dev) |
|
{ |
|
struct ipoib_dev_priv *priv = ipoib_priv(dev); |
|
|
|
ipoib_dbg(priv, "cleaning up ib_dev\n"); |
|
/* |
|
* We must make sure there are no more (path) completions |
|
* that may wish to touch priv fields that are no longer valid |
|
*/ |
|
ipoib_flush_paths(dev); |
|
|
|
ipoib_mcast_stop_thread(dev); |
|
ipoib_mcast_dev_flush(dev); |
|
|
|
/* |
|
* All of our ah references aren't free until after |
|
* ipoib_mcast_dev_flush(), ipoib_flush_paths, and |
|
* the neighbor garbage collection is stopped and reaped. |
|
* That should all be done now, so make a final ah flush. |
|
*/ |
|
ipoib_reap_dead_ahs(priv); |
|
|
|
clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); |
|
|
|
priv->rn_ops->ndo_uninit(dev); |
|
|
|
if (priv->pd) { |
|
ib_dealloc_pd(priv->pd); |
|
priv->pd = NULL; |
|
} |
|
} |
|
|
|
|