2005-04-17 00:20:36 +02:00
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/*
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* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
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2005-08-11 08:03:10 +02:00
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* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
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* Copyright (c) 2004 Voltaire, Inc. All rights reserved.
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2005-04-17 00:20:36 +02:00
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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_multicast.c 1362 2004-12-18 15:56:29Z roland $
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*/
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#include <linux/skbuff.h>
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#include <linux/rtnetlink.h>
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#include <linux/ip.h>
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#include <linux/in.h>
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#include <linux/igmp.h>
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#include <linux/inetdevice.h>
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#include <linux/delay.h>
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#include <linux/completion.h>
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2005-12-27 05:43:12 +01:00
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#include <net/dst.h>
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2005-04-17 00:20:36 +02:00
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#include "ipoib.h"
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#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
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static int mcast_debug_level;
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module_param(mcast_debug_level, int, 0644);
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MODULE_PARM_DESC(mcast_debug_level,
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"Enable multicast debug tracing if > 0");
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#endif
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2006-01-13 23:51:39 +01:00
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static DEFINE_MUTEX(mcast_mutex);
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2005-04-17 00:20:36 +02:00
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/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
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struct ipoib_mcast {
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struct ib_sa_mcmember_rec mcmember;
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struct ipoib_ah *ah;
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struct rb_node rb_node;
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struct list_head list;
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struct completion done;
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int query_id;
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struct ib_sa_query *query;
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unsigned long created;
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unsigned long backoff;
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unsigned long flags;
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unsigned char logcount;
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struct list_head neigh_list;
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struct sk_buff_head pkt_queue;
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struct net_device *dev;
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};
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struct ipoib_mcast_iter {
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struct net_device *dev;
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union ib_gid mgid;
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unsigned long created;
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unsigned int queuelen;
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unsigned int complete;
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unsigned int send_only;
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};
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static void ipoib_mcast_free(struct ipoib_mcast *mcast)
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{
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struct net_device *dev = mcast->dev;
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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struct ipoib_neigh *neigh, *tmp;
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unsigned long flags;
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ipoib_dbg_mcast(netdev_priv(dev),
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"deleting multicast group " IPOIB_GID_FMT "\n",
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IPOIB_GID_ARG(mcast->mcmember.mgid));
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spin_lock_irqsave(&priv->lock, flags);
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list_for_each_entry_safe(neigh, tmp, &mcast->neigh_list, list) {
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2006-01-10 16:43:02 +01:00
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/*
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* It's safe to call ipoib_put_ah() inside priv->lock
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* here, because we know that mcast->ah will always
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* hold one more reference, so ipoib_put_ah() will
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* never do more than decrement the ref count.
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*/
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2005-04-17 00:20:36 +02:00
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if (neigh->ah)
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2006-01-10 16:43:02 +01:00
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ipoib_put_ah(neigh->ah);
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2005-04-17 00:20:36 +02:00
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*to_ipoib_neigh(neigh->neighbour) = NULL;
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neigh->neighbour->ops->destructor = NULL;
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kfree(neigh);
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}
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spin_unlock_irqrestore(&priv->lock, flags);
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if (mcast->ah)
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ipoib_put_ah(mcast->ah);
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2005-11-07 19:49:38 +01:00
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while (!skb_queue_empty(&mcast->pkt_queue))
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dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue));
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2005-04-17 00:20:36 +02:00
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kfree(mcast);
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}
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static struct ipoib_mcast *ipoib_mcast_alloc(struct net_device *dev,
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int can_sleep)
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{
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struct ipoib_mcast *mcast;
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2005-11-02 16:23:14 +01:00
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mcast = kzalloc(sizeof *mcast, can_sleep ? GFP_KERNEL : GFP_ATOMIC);
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2005-04-17 00:20:36 +02:00
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if (!mcast)
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return NULL;
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mcast->dev = dev;
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mcast->created = jiffies;
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2005-09-18 22:47:53 +02:00
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mcast->backoff = 1;
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2005-04-17 00:20:36 +02:00
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INIT_LIST_HEAD(&mcast->list);
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INIT_LIST_HEAD(&mcast->neigh_list);
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skb_queue_head_init(&mcast->pkt_queue);
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return mcast;
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}
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static struct ipoib_mcast *__ipoib_mcast_find(struct net_device *dev, 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 rb_node *n = priv->multicast_tree.rb_node;
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while (n) {
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struct ipoib_mcast *mcast;
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int ret;
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mcast = rb_entry(n, struct ipoib_mcast, rb_node);
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ret = memcmp(mgid->raw, mcast->mcmember.mgid.raw,
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sizeof (union ib_gid));
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if (ret < 0)
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n = n->rb_left;
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else if (ret > 0)
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n = n->rb_right;
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else
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return mcast;
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}
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return NULL;
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}
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static int __ipoib_mcast_add(struct net_device *dev, struct ipoib_mcast *mcast)
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{
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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struct rb_node **n = &priv->multicast_tree.rb_node, *pn = NULL;
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while (*n) {
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struct ipoib_mcast *tmcast;
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int ret;
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pn = *n;
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tmcast = rb_entry(pn, struct ipoib_mcast, rb_node);
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ret = memcmp(mcast->mcmember.mgid.raw, tmcast->mcmember.mgid.raw,
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sizeof (union ib_gid));
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if (ret < 0)
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n = &pn->rb_left;
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else if (ret > 0)
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n = &pn->rb_right;
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else
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return -EEXIST;
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}
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rb_link_node(&mcast->rb_node, pn, n);
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rb_insert_color(&mcast->rb_node, &priv->multicast_tree);
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return 0;
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}
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static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast,
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struct ib_sa_mcmember_rec *mcmember)
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{
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struct net_device *dev = mcast->dev;
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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int ret;
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mcast->mcmember = *mcmember;
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/* Set the cached Q_Key before we attach if it's the broadcast group */
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if (!memcmp(mcast->mcmember.mgid.raw, priv->dev->broadcast + 4,
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sizeof (union ib_gid))) {
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priv->qkey = be32_to_cpu(priv->broadcast->mcmember.qkey);
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priv->tx_wr.wr.ud.remote_qkey = priv->qkey;
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}
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if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
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if (test_and_set_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) {
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ipoib_warn(priv, "multicast group " IPOIB_GID_FMT
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" already attached\n",
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IPOIB_GID_ARG(mcast->mcmember.mgid));
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return 0;
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}
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ret = ipoib_mcast_attach(dev, be16_to_cpu(mcast->mcmember.mlid),
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&mcast->mcmember.mgid);
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if (ret < 0) {
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ipoib_warn(priv, "couldn't attach QP to multicast group "
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IPOIB_GID_FMT "\n",
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IPOIB_GID_ARG(mcast->mcmember.mgid));
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clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags);
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return ret;
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}
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}
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{
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struct ib_ah_attr av = {
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.dlid = be16_to_cpu(mcast->mcmember.mlid),
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.port_num = priv->port,
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.sl = mcast->mcmember.sl,
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.ah_flags = IB_AH_GRH,
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.grh = {
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.flow_label = be32_to_cpu(mcast->mcmember.flow_label),
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.hop_limit = mcast->mcmember.hop_limit,
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.sgid_index = 0,
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.traffic_class = mcast->mcmember.traffic_class
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}
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};
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2005-04-17 00:26:06 +02:00
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int path_rate = ib_sa_rate_enum_to_int(mcast->mcmember.rate);
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2005-04-17 00:20:36 +02:00
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av.grh.dgid = mcast->mcmember.mgid;
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2005-04-17 00:26:06 +02:00
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if (path_rate > 0 && priv->local_rate > path_rate)
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av.static_rate = (priv->local_rate - 1) / path_rate;
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2005-04-17 00:20:36 +02:00
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ipoib_dbg_mcast(priv, "static_rate %d for local port %dX, mcmember %dX\n",
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av.static_rate, priv->local_rate,
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ib_sa_rate_enum_to_int(mcast->mcmember.rate));
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mcast->ah = ipoib_create_ah(dev, priv->pd, &av);
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if (!mcast->ah) {
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ipoib_warn(priv, "ib_address_create failed\n");
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} else {
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ipoib_dbg_mcast(priv, "MGID " IPOIB_GID_FMT
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" AV %p, LID 0x%04x, SL %d\n",
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IPOIB_GID_ARG(mcast->mcmember.mgid),
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mcast->ah->ah,
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be16_to_cpu(mcast->mcmember.mlid),
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mcast->mcmember.sl);
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}
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}
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/* actually send any queued packets */
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while (!skb_queue_empty(&mcast->pkt_queue)) {
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struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue);
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skb->dev = dev;
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if (!skb->dst || !skb->dst->neighbour) {
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/* put pseudoheader back on for next time */
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skb_push(skb, sizeof (struct ipoib_pseudoheader));
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}
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if (dev_queue_xmit(skb))
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ipoib_warn(priv, "dev_queue_xmit failed to requeue packet\n");
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}
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return 0;
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}
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static void
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ipoib_mcast_sendonly_join_complete(int status,
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struct ib_sa_mcmember_rec *mcmember,
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void *mcast_ptr)
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{
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struct ipoib_mcast *mcast = mcast_ptr;
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struct net_device *dev = mcast->dev;
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if (!status)
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ipoib_mcast_join_finish(mcast, mcmember);
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else {
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if (mcast->logcount++ < 20)
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ipoib_dbg_mcast(netdev_priv(dev), "multicast join failed for "
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IPOIB_GID_FMT ", status %d\n",
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IPOIB_GID_ARG(mcast->mcmember.mgid), status);
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/* Flush out any queued packets */
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2005-11-07 19:49:38 +01:00
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while (!skb_queue_empty(&mcast->pkt_queue))
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dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue));
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2005-04-17 00:20:36 +02:00
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/* Clear the busy flag so we try again */
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clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags);
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}
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complete(&mcast->done);
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}
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static int ipoib_mcast_sendonly_join(struct ipoib_mcast *mcast)
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{
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struct net_device *dev = mcast->dev;
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struct ipoib_dev_priv *priv = netdev_priv(dev);
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struct ib_sa_mcmember_rec rec = {
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#if 0 /* Some SMs don't support send-only yet */
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.join_state = 4
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#else
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.join_state = 1
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#endif
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};
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int ret = 0;
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if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) {
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ipoib_dbg_mcast(priv, "device shutting down, no multicast joins\n");
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return -ENODEV;
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}
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if (test_and_set_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)) {
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ipoib_dbg_mcast(priv, "multicast entry busy, skipping\n");
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return -EBUSY;
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}
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rec.mgid = mcast->mcmember.mgid;
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|
|
rec.port_gid = priv->local_gid;
|
2005-08-14 06:05:57 +02:00
|
|
|
rec.pkey = cpu_to_be16(priv->pkey);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
2005-11-29 19:18:45 +01:00
|
|
|
init_completion(&mcast->done);
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
ret = ib_sa_mcmember_rec_set(priv->ca, priv->port, &rec,
|
|
|
|
IB_SA_MCMEMBER_REC_MGID |
|
|
|
|
IB_SA_MCMEMBER_REC_PORT_GID |
|
|
|
|
IB_SA_MCMEMBER_REC_PKEY |
|
|
|
|
IB_SA_MCMEMBER_REC_JOIN_STATE,
|
|
|
|
1000, GFP_ATOMIC,
|
|
|
|
ipoib_mcast_sendonly_join_complete,
|
|
|
|
mcast, &mcast->query);
|
|
|
|
if (ret < 0) {
|
|
|
|
ipoib_warn(priv, "ib_sa_mcmember_rec_set failed (ret = %d)\n",
|
|
|
|
ret);
|
|
|
|
} else {
|
|
|
|
ipoib_dbg_mcast(priv, "no multicast record for " IPOIB_GID_FMT
|
|
|
|
", starting join\n",
|
|
|
|
IPOIB_GID_ARG(mcast->mcmember.mgid));
|
|
|
|
|
|
|
|
mcast->query_id = ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ipoib_mcast_join_complete(int status,
|
|
|
|
struct ib_sa_mcmember_rec *mcmember,
|
|
|
|
void *mcast_ptr)
|
|
|
|
{
|
|
|
|
struct ipoib_mcast *mcast = mcast_ptr;
|
|
|
|
struct net_device *dev = mcast->dev;
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
ipoib_dbg_mcast(priv, "join completion for " IPOIB_GID_FMT
|
|
|
|
" (status %d)\n",
|
|
|
|
IPOIB_GID_ARG(mcast->mcmember.mgid), status);
|
|
|
|
|
|
|
|
if (!status && !ipoib_mcast_join_finish(mcast, mcmember)) {
|
2005-09-18 22:47:53 +02:00
|
|
|
mcast->backoff = 1;
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_lock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
if (test_bit(IPOIB_MCAST_RUN, &priv->flags))
|
|
|
|
queue_work(ipoib_workqueue, &priv->mcast_task);
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_unlock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
complete(&mcast->done);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (status == -EINTR) {
|
|
|
|
complete(&mcast->done);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (status && mcast->logcount++ < 20) {
|
|
|
|
if (status == -ETIMEDOUT || status == -EINTR) {
|
|
|
|
ipoib_dbg_mcast(priv, "multicast join failed for " IPOIB_GID_FMT
|
|
|
|
", status %d\n",
|
|
|
|
IPOIB_GID_ARG(mcast->mcmember.mgid),
|
|
|
|
status);
|
|
|
|
} else {
|
|
|
|
ipoib_warn(priv, "multicast join failed for "
|
|
|
|
IPOIB_GID_FMT ", status %d\n",
|
|
|
|
IPOIB_GID_ARG(mcast->mcmember.mgid),
|
|
|
|
status);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
mcast->backoff *= 2;
|
|
|
|
if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS)
|
|
|
|
mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS;
|
|
|
|
|
|
|
|
mcast->query = NULL;
|
|
|
|
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_lock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) {
|
|
|
|
if (status == -ETIMEDOUT)
|
|
|
|
queue_work(ipoib_workqueue, &priv->mcast_task);
|
|
|
|
else
|
|
|
|
queue_delayed_work(ipoib_workqueue, &priv->mcast_task,
|
|
|
|
mcast->backoff * HZ);
|
|
|
|
} else
|
|
|
|
complete(&mcast->done);
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_unlock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void ipoib_mcast_join(struct net_device *dev, struct ipoib_mcast *mcast,
|
|
|
|
int create)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
struct ib_sa_mcmember_rec rec = {
|
|
|
|
.join_state = 1
|
|
|
|
};
|
|
|
|
ib_sa_comp_mask comp_mask;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
ipoib_dbg_mcast(priv, "joining MGID " IPOIB_GID_FMT "\n",
|
|
|
|
IPOIB_GID_ARG(mcast->mcmember.mgid));
|
|
|
|
|
|
|
|
rec.mgid = mcast->mcmember.mgid;
|
|
|
|
rec.port_gid = priv->local_gid;
|
2005-08-14 06:05:57 +02:00
|
|
|
rec.pkey = cpu_to_be16(priv->pkey);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
comp_mask =
|
|
|
|
IB_SA_MCMEMBER_REC_MGID |
|
|
|
|
IB_SA_MCMEMBER_REC_PORT_GID |
|
|
|
|
IB_SA_MCMEMBER_REC_PKEY |
|
|
|
|
IB_SA_MCMEMBER_REC_JOIN_STATE;
|
|
|
|
|
|
|
|
if (create) {
|
|
|
|
comp_mask |=
|
|
|
|
IB_SA_MCMEMBER_REC_QKEY |
|
|
|
|
IB_SA_MCMEMBER_REC_SL |
|
|
|
|
IB_SA_MCMEMBER_REC_FLOW_LABEL |
|
|
|
|
IB_SA_MCMEMBER_REC_TRAFFIC_CLASS;
|
|
|
|
|
|
|
|
rec.qkey = priv->broadcast->mcmember.qkey;
|
|
|
|
rec.sl = priv->broadcast->mcmember.sl;
|
|
|
|
rec.flow_label = priv->broadcast->mcmember.flow_label;
|
|
|
|
rec.traffic_class = priv->broadcast->mcmember.traffic_class;
|
|
|
|
}
|
|
|
|
|
2005-11-29 19:18:45 +01:00
|
|
|
init_completion(&mcast->done);
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
ret = ib_sa_mcmember_rec_set(priv->ca, priv->port, &rec, comp_mask,
|
|
|
|
mcast->backoff * 1000, GFP_ATOMIC,
|
|
|
|
ipoib_mcast_join_complete,
|
|
|
|
mcast, &mcast->query);
|
|
|
|
|
|
|
|
if (ret < 0) {
|
|
|
|
ipoib_warn(priv, "ib_sa_mcmember_rec_set failed, status %d\n", ret);
|
|
|
|
|
|
|
|
mcast->backoff *= 2;
|
|
|
|
if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS)
|
|
|
|
mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS;
|
|
|
|
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_lock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
if (test_bit(IPOIB_MCAST_RUN, &priv->flags))
|
|
|
|
queue_delayed_work(ipoib_workqueue,
|
|
|
|
&priv->mcast_task,
|
2005-09-18 22:47:53 +02:00
|
|
|
mcast->backoff * HZ);
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_unlock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
} else
|
|
|
|
mcast->query_id = ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_mcast_join_task(void *dev_ptr)
|
|
|
|
{
|
|
|
|
struct net_device *dev = dev_ptr;
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
if (!test_bit(IPOIB_MCAST_RUN, &priv->flags))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (ib_query_gid(priv->ca, priv->port, 0, &priv->local_gid))
|
|
|
|
ipoib_warn(priv, "ib_gid_entry_get() failed\n");
|
|
|
|
else
|
|
|
|
memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid));
|
|
|
|
|
|
|
|
{
|
|
|
|
struct ib_port_attr attr;
|
|
|
|
|
|
|
|
if (!ib_query_port(priv->ca, priv->port, &attr)) {
|
|
|
|
priv->local_lid = attr.lid;
|
|
|
|
priv->local_rate = attr.active_speed *
|
|
|
|
ib_width_enum_to_int(attr.active_width);
|
|
|
|
} else
|
|
|
|
ipoib_warn(priv, "ib_query_port failed\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!priv->broadcast) {
|
|
|
|
priv->broadcast = ipoib_mcast_alloc(dev, 1);
|
|
|
|
if (!priv->broadcast) {
|
|
|
|
ipoib_warn(priv, "failed to allocate broadcast group\n");
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_lock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
if (test_bit(IPOIB_MCAST_RUN, &priv->flags))
|
|
|
|
queue_delayed_work(ipoib_workqueue,
|
|
|
|
&priv->mcast_task, HZ);
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_unlock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
memcpy(priv->broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4,
|
|
|
|
sizeof (union ib_gid));
|
|
|
|
|
|
|
|
spin_lock_irq(&priv->lock);
|
|
|
|
__ipoib_mcast_add(dev, priv->broadcast);
|
|
|
|
spin_unlock_irq(&priv->lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) {
|
|
|
|
ipoib_mcast_join(dev, priv->broadcast, 0);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
while (1) {
|
|
|
|
struct ipoib_mcast *mcast = NULL;
|
|
|
|
|
|
|
|
spin_lock_irq(&priv->lock);
|
|
|
|
list_for_each_entry(mcast, &priv->multicast_list, list) {
|
|
|
|
if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)
|
|
|
|
&& !test_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags)
|
|
|
|
&& !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) {
|
|
|
|
/* Found the next unjoined group */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
spin_unlock_irq(&priv->lock);
|
|
|
|
|
|
|
|
if (&mcast->list == &priv->multicast_list) {
|
|
|
|
/* All done */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
ipoib_mcast_join(dev, mcast, 1);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
priv->mcast_mtu = ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu) -
|
|
|
|
IPOIB_ENCAP_LEN;
|
|
|
|
dev->mtu = min(priv->mcast_mtu, priv->admin_mtu);
|
|
|
|
|
|
|
|
ipoib_dbg_mcast(priv, "successfully joined all multicast groups\n");
|
|
|
|
|
|
|
|
clear_bit(IPOIB_MCAST_RUN, &priv->flags);
|
|
|
|
netif_carrier_on(dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_mcast_start_thread(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
ipoib_dbg_mcast(priv, "starting multicast thread\n");
|
|
|
|
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_lock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
if (!test_and_set_bit(IPOIB_MCAST_RUN, &priv->flags))
|
|
|
|
queue_work(ipoib_workqueue, &priv->mcast_task);
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_unlock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-09-20 19:52:04 +02:00
|
|
|
int ipoib_mcast_stop_thread(struct net_device *dev, int flush)
|
2005-04-17 00:20:36 +02:00
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
struct ipoib_mcast *mcast;
|
|
|
|
|
|
|
|
ipoib_dbg_mcast(priv, "stopping multicast thread\n");
|
|
|
|
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_lock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
clear_bit(IPOIB_MCAST_RUN, &priv->flags);
|
|
|
|
cancel_delayed_work(&priv->mcast_task);
|
2006-01-13 23:51:39 +01:00
|
|
|
mutex_unlock(&mcast_mutex);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
2005-09-20 19:52:04 +02:00
|
|
|
if (flush)
|
|
|
|
flush_workqueue(ipoib_workqueue);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
if (priv->broadcast && priv->broadcast->query) {
|
|
|
|
ib_sa_cancel_query(priv->broadcast->query_id, priv->broadcast->query);
|
|
|
|
priv->broadcast->query = NULL;
|
|
|
|
ipoib_dbg_mcast(priv, "waiting for bcast\n");
|
|
|
|
wait_for_completion(&priv->broadcast->done);
|
|
|
|
}
|
|
|
|
|
|
|
|
list_for_each_entry(mcast, &priv->multicast_list, list) {
|
|
|
|
if (mcast->query) {
|
|
|
|
ib_sa_cancel_query(mcast->query_id, mcast->query);
|
|
|
|
mcast->query = NULL;
|
|
|
|
ipoib_dbg_mcast(priv, "waiting for MGID " IPOIB_GID_FMT "\n",
|
|
|
|
IPOIB_GID_ARG(mcast->mcmember.mgid));
|
|
|
|
wait_for_completion(&mcast->done);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
struct ib_sa_mcmember_rec rec = {
|
|
|
|
.join_state = 1
|
|
|
|
};
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
if (!test_and_clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
ipoib_dbg_mcast(priv, "leaving MGID " IPOIB_GID_FMT "\n",
|
|
|
|
IPOIB_GID_ARG(mcast->mcmember.mgid));
|
|
|
|
|
|
|
|
rec.mgid = mcast->mcmember.mgid;
|
|
|
|
rec.port_gid = priv->local_gid;
|
2005-08-14 06:05:57 +02:00
|
|
|
rec.pkey = cpu_to_be16(priv->pkey);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
/* Remove ourselves from the multicast group */
|
|
|
|
ret = ipoib_mcast_detach(dev, be16_to_cpu(mcast->mcmember.mlid),
|
|
|
|
&mcast->mcmember.mgid);
|
|
|
|
if (ret)
|
|
|
|
ipoib_warn(priv, "ipoib_mcast_detach failed (result = %d)\n", ret);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Just make one shot at leaving and don't wait for a reply;
|
|
|
|
* if we fail, too bad.
|
|
|
|
*/
|
|
|
|
ret = ib_sa_mcmember_rec_delete(priv->ca, priv->port, &rec,
|
|
|
|
IB_SA_MCMEMBER_REC_MGID |
|
|
|
|
IB_SA_MCMEMBER_REC_PORT_GID |
|
|
|
|
IB_SA_MCMEMBER_REC_PKEY |
|
|
|
|
IB_SA_MCMEMBER_REC_JOIN_STATE,
|
|
|
|
0, GFP_ATOMIC, NULL,
|
|
|
|
mcast, &mcast->query);
|
|
|
|
if (ret < 0)
|
|
|
|
ipoib_warn(priv, "ib_sa_mcmember_rec_delete failed "
|
|
|
|
"for leave (result = %d)\n", ret);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_mcast_send(struct net_device *dev, union ib_gid *mgid,
|
|
|
|
struct sk_buff *skb)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
struct ipoib_mcast *mcast;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We can only be called from ipoib_start_xmit, so we're
|
|
|
|
* inside tx_lock -- no need to save/restore flags.
|
|
|
|
*/
|
|
|
|
spin_lock(&priv->lock);
|
|
|
|
|
|
|
|
mcast = __ipoib_mcast_find(dev, mgid);
|
|
|
|
if (!mcast) {
|
|
|
|
/* Let's create a new send only group now */
|
|
|
|
ipoib_dbg_mcast(priv, "setting up send only multicast group for "
|
|
|
|
IPOIB_GID_FMT "\n", IPOIB_GID_ARG(*mgid));
|
|
|
|
|
|
|
|
mcast = ipoib_mcast_alloc(dev, 0);
|
|
|
|
if (!mcast) {
|
|
|
|
ipoib_warn(priv, "unable to allocate memory for "
|
|
|
|
"multicast structure\n");
|
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
set_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags);
|
|
|
|
mcast->mcmember.mgid = *mgid;
|
|
|
|
__ipoib_mcast_add(dev, mcast);
|
|
|
|
list_add_tail(&mcast->list, &priv->multicast_list);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!mcast->ah) {
|
|
|
|
if (skb_queue_len(&mcast->pkt_queue) < IPOIB_MAX_MCAST_QUEUE)
|
|
|
|
skb_queue_tail(&mcast->pkt_queue, skb);
|
|
|
|
else
|
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
|
|
|
|
if (mcast->query)
|
|
|
|
ipoib_dbg_mcast(priv, "no address vector, "
|
|
|
|
"but multicast join already started\n");
|
|
|
|
else if (test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags))
|
|
|
|
ipoib_mcast_sendonly_join(mcast);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If lookup completes between here and out:, don't
|
|
|
|
* want to send packet twice.
|
|
|
|
*/
|
|
|
|
mcast = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
out:
|
|
|
|
if (mcast && mcast->ah) {
|
|
|
|
if (skb->dst &&
|
|
|
|
skb->dst->neighbour &&
|
|
|
|
!*to_ipoib_neigh(skb->dst->neighbour)) {
|
|
|
|
struct ipoib_neigh *neigh = kmalloc(sizeof *neigh, GFP_ATOMIC);
|
|
|
|
|
|
|
|
if (neigh) {
|
|
|
|
kref_get(&mcast->ah->ref);
|
|
|
|
neigh->ah = mcast->ah;
|
|
|
|
neigh->neighbour = skb->dst->neighbour;
|
|
|
|
*to_ipoib_neigh(skb->dst->neighbour) = neigh;
|
|
|
|
list_add_tail(&neigh->list, &mcast->neigh_list);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN);
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock(&priv->lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_mcast_dev_flush(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
LIST_HEAD(remove_list);
|
2006-01-12 23:32:20 +01:00
|
|
|
struct ipoib_mcast *mcast, *tmcast;
|
2005-04-17 00:20:36 +02:00
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
ipoib_dbg_mcast(priv, "flushing multicast list\n");
|
|
|
|
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
|
2006-01-12 23:32:20 +01:00
|
|
|
list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) {
|
|
|
|
list_del(&mcast->list);
|
|
|
|
rb_erase(&mcast->rb_node, &priv->multicast_tree);
|
|
|
|
list_add_tail(&mcast->list, &remove_list);
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
if (priv->broadcast) {
|
2006-01-12 23:32:20 +01:00
|
|
|
rb_erase(&priv->broadcast->rb_node, &priv->multicast_tree);
|
|
|
|
list_add_tail(&priv->broadcast->list, &remove_list);
|
|
|
|
priv->broadcast = NULL;
|
2005-04-17 00:20:36 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
|
|
|
|
list_for_each_entry_safe(mcast, tmcast, &remove_list, list) {
|
|
|
|
ipoib_mcast_leave(dev, mcast);
|
|
|
|
ipoib_mcast_free(mcast);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_mcast_restart_task(void *dev_ptr)
|
|
|
|
{
|
|
|
|
struct net_device *dev = dev_ptr;
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
struct dev_mc_list *mclist;
|
|
|
|
struct ipoib_mcast *mcast, *tmcast;
|
|
|
|
LIST_HEAD(remove_list);
|
|
|
|
unsigned long flags;
|
|
|
|
|
|
|
|
ipoib_dbg_mcast(priv, "restarting multicast task\n");
|
|
|
|
|
2005-09-20 19:52:04 +02:00
|
|
|
ipoib_mcast_stop_thread(dev, 0);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
2006-01-11 20:47:34 +01:00
|
|
|
spin_lock_irqsave(&dev->xmit_lock, flags);
|
|
|
|
spin_lock(&priv->lock);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Unfortunately, the networking core only gives us a list of all of
|
|
|
|
* the multicast hardware addresses. We need to figure out which ones
|
|
|
|
* are new and which ones have been removed
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* Clear out the found flag */
|
|
|
|
list_for_each_entry(mcast, &priv->multicast_list, list)
|
|
|
|
clear_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags);
|
|
|
|
|
|
|
|
/* Mark all of the entries that are found or don't exist */
|
|
|
|
for (mclist = dev->mc_list; mclist; mclist = mclist->next) {
|
|
|
|
union ib_gid mgid;
|
|
|
|
|
|
|
|
memcpy(mgid.raw, mclist->dmi_addr + 4, sizeof mgid);
|
|
|
|
|
|
|
|
/* Add in the P_Key */
|
|
|
|
mgid.raw[4] = (priv->pkey >> 8) & 0xff;
|
|
|
|
mgid.raw[5] = priv->pkey & 0xff;
|
|
|
|
|
|
|
|
mcast = __ipoib_mcast_find(dev, &mgid);
|
|
|
|
if (!mcast || test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
|
|
|
|
struct ipoib_mcast *nmcast;
|
|
|
|
|
|
|
|
/* Not found or send-only group, let's add a new entry */
|
|
|
|
ipoib_dbg_mcast(priv, "adding multicast entry for mgid "
|
|
|
|
IPOIB_GID_FMT "\n", IPOIB_GID_ARG(mgid));
|
|
|
|
|
|
|
|
nmcast = ipoib_mcast_alloc(dev, 0);
|
|
|
|
if (!nmcast) {
|
|
|
|
ipoib_warn(priv, "unable to allocate memory for multicast structure\n");
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
set_bit(IPOIB_MCAST_FLAG_FOUND, &nmcast->flags);
|
|
|
|
|
|
|
|
nmcast->mcmember.mgid = mgid;
|
|
|
|
|
|
|
|
if (mcast) {
|
|
|
|
/* Destroy the send only entry */
|
|
|
|
list_del(&mcast->list);
|
|
|
|
list_add_tail(&mcast->list, &remove_list);
|
|
|
|
|
|
|
|
rb_replace_node(&mcast->rb_node,
|
|
|
|
&nmcast->rb_node,
|
|
|
|
&priv->multicast_tree);
|
|
|
|
} else
|
|
|
|
__ipoib_mcast_add(dev, nmcast);
|
|
|
|
|
|
|
|
list_add_tail(&nmcast->list, &priv->multicast_list);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (mcast)
|
|
|
|
set_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Remove all of the entries don't exist anymore */
|
|
|
|
list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) {
|
|
|
|
if (!test_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags) &&
|
|
|
|
!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
|
|
|
|
ipoib_dbg_mcast(priv, "deleting multicast group " IPOIB_GID_FMT "\n",
|
|
|
|
IPOIB_GID_ARG(mcast->mcmember.mgid));
|
|
|
|
|
|
|
|
rb_erase(&mcast->rb_node, &priv->multicast_tree);
|
|
|
|
|
|
|
|
/* Move to the remove list */
|
|
|
|
list_del(&mcast->list);
|
|
|
|
list_add_tail(&mcast->list, &remove_list);
|
|
|
|
}
|
|
|
|
}
|
2006-01-11 20:47:34 +01:00
|
|
|
|
|
|
|
spin_unlock(&priv->lock);
|
|
|
|
spin_unlock_irqrestore(&dev->xmit_lock, flags);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
/* We have to cancel outside of the spinlock */
|
|
|
|
list_for_each_entry_safe(mcast, tmcast, &remove_list, list) {
|
|
|
|
ipoib_mcast_leave(mcast->dev, mcast);
|
|
|
|
ipoib_mcast_free(mcast);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
|
|
|
|
ipoib_mcast_start_thread(dev);
|
|
|
|
}
|
|
|
|
|
2005-11-03 05:51:01 +01:00
|
|
|
#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
|
|
|
|
|
2005-04-17 00:20:36 +02:00
|
|
|
struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_mcast_iter *iter;
|
|
|
|
|
|
|
|
iter = kmalloc(sizeof *iter, GFP_KERNEL);
|
|
|
|
if (!iter)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
iter->dev = dev;
|
2005-11-07 19:33:11 +01:00
|
|
|
memset(iter->mgid.raw, 0, 16);
|
2005-04-17 00:20:36 +02:00
|
|
|
|
|
|
|
if (ipoib_mcast_iter_next(iter)) {
|
2005-11-07 19:33:11 +01:00
|
|
|
kfree(iter);
|
2005-04-17 00:20:36 +02:00
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return iter;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(iter->dev);
|
|
|
|
struct rb_node *n;
|
|
|
|
struct ipoib_mcast *mcast;
|
|
|
|
int ret = 1;
|
|
|
|
|
|
|
|
spin_lock_irq(&priv->lock);
|
|
|
|
|
|
|
|
n = rb_first(&priv->multicast_tree);
|
|
|
|
|
|
|
|
while (n) {
|
|
|
|
mcast = rb_entry(n, struct ipoib_mcast, rb_node);
|
|
|
|
|
|
|
|
if (memcmp(iter->mgid.raw, mcast->mcmember.mgid.raw,
|
|
|
|
sizeof (union ib_gid)) < 0) {
|
|
|
|
iter->mgid = mcast->mcmember.mgid;
|
|
|
|
iter->created = mcast->created;
|
|
|
|
iter->queuelen = skb_queue_len(&mcast->pkt_queue);
|
|
|
|
iter->complete = !!mcast->ah;
|
|
|
|
iter->send_only = !!(mcast->flags & (1 << IPOIB_MCAST_FLAG_SENDONLY));
|
|
|
|
|
|
|
|
ret = 0;
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
n = rb_next(n);
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock_irq(&priv->lock);
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_mcast_iter_read(struct ipoib_mcast_iter *iter,
|
|
|
|
union ib_gid *mgid,
|
|
|
|
unsigned long *created,
|
|
|
|
unsigned int *queuelen,
|
|
|
|
unsigned int *complete,
|
|
|
|
unsigned int *send_only)
|
|
|
|
{
|
|
|
|
*mgid = iter->mgid;
|
|
|
|
*created = iter->created;
|
|
|
|
*queuelen = iter->queuelen;
|
|
|
|
*complete = iter->complete;
|
|
|
|
*send_only = iter->send_only;
|
|
|
|
}
|
2005-11-03 05:51:01 +01:00
|
|
|
|
|
|
|
#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
|