/*
* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
+ * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
#include <linux/delay.h>
#include <linux/completion.h>
+#include <net/dst.h>
+
#include "ipoib.h"
#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
"Enable multicast debug tracing if > 0");
#endif
-static DECLARE_MUTEX(mcast_mutex);
+static DEFINE_MUTEX(mcast_mutex);
/* Used for all multicast joins (broadcast, IPv4 mcast and IPv6 mcast) */
struct ipoib_mcast {
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_neigh *neigh, *tmp;
unsigned long flags;
- LIST_HEAD(ah_list);
- struct ipoib_ah *ah, *tah;
+ int tx_dropped = 0;
ipoib_dbg_mcast(netdev_priv(dev),
"deleting multicast group " IPOIB_GID_FMT "\n",
spin_lock_irqsave(&priv->lock, flags);
list_for_each_entry_safe(neigh, tmp, &mcast->neigh_list, list) {
+ /*
+ * It's safe to call ipoib_put_ah() inside priv->lock
+ * here, because we know that mcast->ah will always
+ * hold one more reference, so ipoib_put_ah() will
+ * never do more than decrement the ref count.
+ */
if (neigh->ah)
- list_add_tail(&neigh->ah->list, &ah_list);
- *to_ipoib_neigh(neigh->neighbour) = NULL;
- neigh->neighbour->ops->destructor = NULL;
- kfree(neigh);
+ ipoib_put_ah(neigh->ah);
+ ipoib_neigh_free(neigh);
}
spin_unlock_irqrestore(&priv->lock, flags);
- list_for_each_entry_safe(ah, tah, &ah_list, list)
- ipoib_put_ah(ah);
-
if (mcast->ah)
ipoib_put_ah(mcast->ah);
while (!skb_queue_empty(&mcast->pkt_queue)) {
- struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue);
-
- skb->dev = dev;
- dev_kfree_skb_any(skb);
+ ++tx_dropped;
+ dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue));
}
+ spin_lock_irqsave(&priv->tx_lock, flags);
+ priv->stats.tx_dropped += tx_dropped;
+ spin_unlock_irqrestore(&priv->tx_lock, flags);
+
kfree(mcast);
}
{
struct ipoib_mcast *mcast;
- mcast = kmalloc(sizeof (*mcast), can_sleep ? GFP_KERNEL : GFP_ATOMIC);
+ mcast = kzalloc(sizeof *mcast, can_sleep ? GFP_KERNEL : GFP_ATOMIC);
if (!mcast)
return NULL;
- memset(mcast, 0, sizeof (*mcast));
-
- init_completion(&mcast->done);
-
mcast->dev = dev;
mcast->created = jiffies;
- mcast->backoff = HZ;
- mcast->logcount = 0;
+ mcast->backoff = 1;
INIT_LIST_HEAD(&mcast->list);
INIT_LIST_HEAD(&mcast->neigh_list);
skb_queue_head_init(&mcast->pkt_queue);
- mcast->ah = NULL;
- mcast->query = NULL;
-
return mcast;
}
{
struct net_device *dev = mcast->dev;
struct ipoib_dev_priv *priv = netdev_priv(dev);
+ struct ipoib_ah *ah;
int ret;
mcast->mcmember = *mcmember;
.port_num = priv->port,
.sl = mcast->mcmember.sl,
.ah_flags = IB_AH_GRH,
+ .static_rate = mcast->mcmember.rate,
.grh = {
.flow_label = be32_to_cpu(mcast->mcmember.flow_label),
.hop_limit = mcast->mcmember.hop_limit,
.traffic_class = mcast->mcmember.traffic_class
}
};
- int path_rate = ib_sa_rate_enum_to_int(mcast->mcmember.rate);
-
av.grh.dgid = mcast->mcmember.mgid;
- if (path_rate > 0 && priv->local_rate > path_rate)
- av.static_rate = (priv->local_rate - 1) / path_rate;
-
- ipoib_dbg_mcast(priv, "static_rate %d for local port %dX, mcmember %dX\n",
- av.static_rate, priv->local_rate,
- ib_sa_rate_enum_to_int(mcast->mcmember.rate));
-
- mcast->ah = ipoib_create_ah(dev, priv->pd, &av);
- if (!mcast->ah) {
+ ah = ipoib_create_ah(dev, priv->pd, &av);
+ if (!ah) {
ipoib_warn(priv, "ib_address_create failed\n");
} else {
ipoib_dbg_mcast(priv, "MGID " IPOIB_GID_FMT
be16_to_cpu(mcast->mcmember.mlid),
mcast->mcmember.sl);
}
+
+ spin_lock_irq(&priv->lock);
+ mcast->ah = ah;
+ spin_unlock_irq(&priv->lock);
}
/* actually send any queued packets */
+ spin_lock_irq(&priv->tx_lock);
while (!skb_queue_empty(&mcast->pkt_queue)) {
struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue);
+ spin_unlock_irq(&priv->tx_lock);
skb->dev = dev;
if (dev_queue_xmit(skb))
ipoib_warn(priv, "dev_queue_xmit failed to requeue packet\n");
+ spin_lock_irq(&priv->tx_lock);
}
+ spin_unlock_irq(&priv->tx_lock);
return 0;
}
{
struct ipoib_mcast *mcast = mcast_ptr;
struct net_device *dev = mcast->dev;
+ struct ipoib_dev_priv *priv = netdev_priv(dev);
if (!status)
ipoib_mcast_join_finish(mcast, mcmember);
IPOIB_GID_ARG(mcast->mcmember.mgid), status);
/* Flush out any queued packets */
+ spin_lock_irq(&priv->tx_lock);
while (!skb_queue_empty(&mcast->pkt_queue)) {
- struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue);
-
- skb->dev = dev;
-
- dev_kfree_skb_any(skb);
+ ++priv->stats.tx_dropped;
+ dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue));
}
+ spin_unlock_irq(&priv->tx_lock);
/* Clear the busy flag so we try again */
clear_bit(IPOIB_MCAST_FLAG_BUSY, &mcast->flags);
rec.mgid = mcast->mcmember.mgid;
rec.port_gid = priv->local_gid;
- rec.pkey = be16_to_cpu(priv->pkey);
+ rec.pkey = cpu_to_be16(priv->pkey);
+
+ init_completion(&mcast->done);
ret = ib_sa_mcmember_rec_set(priv->ca, priv->port, &rec,
IB_SA_MCMEMBER_REC_MGID |
IPOIB_GID_ARG(mcast->mcmember.mgid), status);
if (!status && !ipoib_mcast_join_finish(mcast, mcmember)) {
- mcast->backoff = HZ;
- down(&mcast_mutex);
+ mcast->backoff = 1;
+ mutex_lock(&mcast_mutex);
if (test_bit(IPOIB_MCAST_RUN, &priv->flags))
queue_work(ipoib_workqueue, &priv->mcast_task);
- up(&mcast_mutex);
+ mutex_unlock(&mcast_mutex);
complete(&mcast->done);
return;
}
if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS)
mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS;
+ mutex_lock(&mcast_mutex);
+
+ spin_lock_irq(&priv->lock);
mcast->query = NULL;
- down(&mcast_mutex);
if (test_bit(IPOIB_MCAST_RUN, &priv->flags)) {
if (status == -ETIMEDOUT)
queue_work(ipoib_workqueue, &priv->mcast_task);
mcast->backoff * HZ);
} else
complete(&mcast->done);
- up(&mcast_mutex);
+ spin_unlock_irq(&priv->lock);
+ mutex_unlock(&mcast_mutex);
return;
}
rec.mgid = mcast->mcmember.mgid;
rec.port_gid = priv->local_gid;
- rec.pkey = be16_to_cpu(priv->pkey);
+ rec.pkey = cpu_to_be16(priv->pkey);
comp_mask =
IB_SA_MCMEMBER_REC_MGID |
rec.traffic_class = priv->broadcast->mcmember.traffic_class;
}
+ init_completion(&mcast->done);
+
ret = ib_sa_mcmember_rec_set(priv->ca, priv->port, &rec, comp_mask,
mcast->backoff * 1000, GFP_ATOMIC,
ipoib_mcast_join_complete,
if (mcast->backoff > IPOIB_MAX_BACKOFF_SECONDS)
mcast->backoff = IPOIB_MAX_BACKOFF_SECONDS;
- down(&mcast_mutex);
+ mutex_lock(&mcast_mutex);
if (test_bit(IPOIB_MCAST_RUN, &priv->flags))
queue_delayed_work(ipoib_workqueue,
&priv->mcast_task,
- mcast->backoff);
- up(&mcast_mutex);
+ mcast->backoff * HZ);
+ mutex_unlock(&mcast_mutex);
} else
mcast->query_id = ret;
}
}
if (!priv->broadcast) {
- priv->broadcast = ipoib_mcast_alloc(dev, 1);
- if (!priv->broadcast) {
+ struct ipoib_mcast *broadcast;
+
+ broadcast = ipoib_mcast_alloc(dev, 1);
+ if (!broadcast) {
ipoib_warn(priv, "failed to allocate broadcast group\n");
- down(&mcast_mutex);
+ mutex_lock(&mcast_mutex);
if (test_bit(IPOIB_MCAST_RUN, &priv->flags))
queue_delayed_work(ipoib_workqueue,
&priv->mcast_task, HZ);
- up(&mcast_mutex);
+ mutex_unlock(&mcast_mutex);
return;
}
- memcpy(priv->broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4,
+ spin_lock_irq(&priv->lock);
+ memcpy(broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4,
sizeof (union ib_gid));
+ priv->broadcast = broadcast;
- spin_lock_irq(&priv->lock);
__ipoib_mcast_add(dev, priv->broadcast);
spin_unlock_irq(&priv->lock);
}
ipoib_dbg_mcast(priv, "starting multicast thread\n");
- down(&mcast_mutex);
+ mutex_lock(&mcast_mutex);
if (!test_and_set_bit(IPOIB_MCAST_RUN, &priv->flags))
queue_work(ipoib_workqueue, &priv->mcast_task);
- up(&mcast_mutex);
+ mutex_unlock(&mcast_mutex);
+
+ spin_lock_irq(&priv->lock);
+ set_bit(IPOIB_MCAST_STARTED, &priv->flags);
+ spin_unlock_irq(&priv->lock);
return 0;
}
-int ipoib_mcast_stop_thread(struct net_device *dev)
+static void wait_for_mcast_join(struct ipoib_dev_priv *priv,
+ struct ipoib_mcast *mcast)
+{
+ spin_lock_irq(&priv->lock);
+ if (mcast && mcast->query) {
+ ib_sa_cancel_query(mcast->query_id, mcast->query);
+ mcast->query = NULL;
+ spin_unlock_irq(&priv->lock);
+ ipoib_dbg_mcast(priv, "waiting for MGID " IPOIB_GID_FMT "\n",
+ IPOIB_GID_ARG(mcast->mcmember.mgid));
+ wait_for_completion(&mcast->done);
+ }
+ else
+ spin_unlock_irq(&priv->lock);
+}
+
+int ipoib_mcast_stop_thread(struct net_device *dev, int flush)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_mcast *mcast;
ipoib_dbg_mcast(priv, "stopping multicast thread\n");
- down(&mcast_mutex);
+ spin_lock_irq(&priv->lock);
+ clear_bit(IPOIB_MCAST_STARTED, &priv->flags);
+ spin_unlock_irq(&priv->lock);
+
+ mutex_lock(&mcast_mutex);
clear_bit(IPOIB_MCAST_RUN, &priv->flags);
cancel_delayed_work(&priv->mcast_task);
- up(&mcast_mutex);
+ mutex_unlock(&mcast_mutex);
- flush_workqueue(ipoib_workqueue);
+ if (flush)
+ flush_workqueue(ipoib_workqueue);
- 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);
- }
+ wait_for_mcast_join(priv, priv->broadcast);
- 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);
- }
- }
+ list_for_each_entry(mcast, &priv->multicast_list, list)
+ wait_for_mcast_join(priv, mcast);
return 0;
}
rec.mgid = mcast->mcmember.mgid;
rec.port_gid = priv->local_gid;
- rec.pkey = be16_to_cpu(priv->pkey);
+ rec.pkey = cpu_to_be16(priv->pkey);
/* Remove ourselves from the multicast group */
ret = ipoib_mcast_detach(dev, be16_to_cpu(mcast->mcmember.mlid),
*/
spin_lock(&priv->lock);
+ if (!test_bit(IPOIB_MCAST_STARTED, &priv->flags) ||
+ !priv->broadcast ||
+ !test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) {
+ ++priv->stats.tx_dropped;
+ dev_kfree_skb_any(skb);
+ goto unlock;
+ }
+
mcast = __ipoib_mcast_find(dev, mgid);
if (!mcast) {
/* Let's create a new send only group now */
if (!mcast) {
ipoib_warn(priv, "unable to allocate memory for "
"multicast structure\n");
+ ++priv->stats.tx_dropped;
dev_kfree_skb_any(skb);
goto out;
}
if (!mcast->ah) {
if (skb_queue_len(&mcast->pkt_queue) < IPOIB_MAX_MCAST_QUEUE)
skb_queue_tail(&mcast->pkt_queue, skb);
- else
+ else {
+ ++priv->stats.tx_dropped;
dev_kfree_skb_any(skb);
+ }
if (mcast->query)
ipoib_dbg_mcast(priv, "no address vector, "
if (skb->dst &&
skb->dst->neighbour &&
!*to_ipoib_neigh(skb->dst->neighbour)) {
- struct ipoib_neigh *neigh = kmalloc(sizeof *neigh, GFP_ATOMIC);
+ struct ipoib_neigh *neigh = ipoib_neigh_alloc(skb->dst->neighbour);
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);
}
+unlock:
spin_unlock(&priv->lock);
}
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
LIST_HEAD(remove_list);
- struct ipoib_mcast *mcast, *tmcast, *nmcast;
+ struct ipoib_mcast *mcast, *tmcast;
unsigned long flags;
ipoib_dbg_mcast(priv, "flushing multicast list\n");
spin_lock_irqsave(&priv->lock, flags);
- list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) {
- nmcast = ipoib_mcast_alloc(dev, 0);
- if (nmcast) {
- nmcast->flags =
- mcast->flags & (1 << IPOIB_MCAST_FLAG_SENDONLY);
-
- nmcast->mcmember.mgid = mcast->mcmember.mgid;
-
- /* Add the new group in before the to-be-destroyed group */
- list_add_tail(&nmcast->list, &mcast->list);
- list_del_init(&mcast->list);
- rb_replace_node(&mcast->rb_node, &nmcast->rb_node,
- &priv->multicast_tree);
-
- list_add_tail(&mcast->list, &remove_list);
- } else {
- ipoib_warn(priv, "could not reallocate multicast group "
- IPOIB_GID_FMT "\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid));
- }
+ 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);
}
if (priv->broadcast) {
- nmcast = ipoib_mcast_alloc(dev, 0);
- if (nmcast) {
- nmcast->mcmember.mgid = priv->broadcast->mcmember.mgid;
-
- rb_replace_node(&priv->broadcast->rb_node,
- &nmcast->rb_node,
- &priv->multicast_tree);
-
- list_add_tail(&priv->broadcast->list, &remove_list);
- }
-
- priv->broadcast = nmcast;
+ rb_erase(&priv->broadcast->rb_node, &priv->multicast_tree);
+ list_add_tail(&priv->broadcast->list, &remove_list);
+ priv->broadcast = NULL;
}
spin_unlock_irqrestore(&priv->lock, flags);
}
}
-void ipoib_mcast_dev_down(struct net_device *dev)
-{
- struct ipoib_dev_priv *priv = netdev_priv(dev);
- unsigned long flags;
-
- /* Delete broadcast since it will be recreated */
- if (priv->broadcast) {
- ipoib_dbg_mcast(priv, "deleting broadcast group\n");
-
- spin_lock_irqsave(&priv->lock, flags);
- rb_erase(&priv->broadcast->rb_node, &priv->multicast_tree);
- spin_unlock_irqrestore(&priv->lock, flags);
- ipoib_mcast_leave(dev, priv->broadcast);
- ipoib_mcast_free(priv->broadcast);
- priv->broadcast = NULL;
- }
-}
-
void ipoib_mcast_restart_task(void *dev_ptr)
{
struct net_device *dev = dev_ptr;
ipoib_dbg_mcast(priv, "restarting multicast task\n");
- ipoib_mcast_stop_thread(dev);
+ ipoib_mcast_stop_thread(dev, 0);
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irqsave(&dev->xmit_lock, flags);
+ spin_lock(&priv->lock);
/*
* Unfortunately, the networking core only gives us a list of all of
list_add_tail(&mcast->list, &remove_list);
}
}
- spin_unlock_irqrestore(&priv->lock, flags);
+
+ spin_unlock(&priv->lock);
+ spin_unlock_irqrestore(&dev->xmit_lock, flags);
/* We have to cancel outside of the spinlock */
list_for_each_entry_safe(mcast, tmcast, &remove_list, list) {
+ wait_for_mcast_join(priv, mcast);
ipoib_mcast_leave(mcast->dev, mcast);
ipoib_mcast_free(mcast);
}
ipoib_mcast_start_thread(dev);
}
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
+
struct ipoib_mcast_iter *ipoib_mcast_iter_init(struct net_device *dev)
{
struct ipoib_mcast_iter *iter;
return NULL;
iter->dev = dev;
- memset(iter->mgid.raw, 0, sizeof iter->mgid);
+ memset(iter->mgid.raw, 0, 16);
if (ipoib_mcast_iter_next(iter)) {
- ipoib_mcast_iter_free(iter);
+ kfree(iter);
return NULL;
}
return iter;
}
-void ipoib_mcast_iter_free(struct ipoib_mcast_iter *iter)
-{
- kfree(iter);
-}
-
int ipoib_mcast_iter_next(struct ipoib_mcast_iter *iter)
{
struct ipoib_dev_priv *priv = netdev_priv(iter->dev);
*complete = iter->complete;
*send_only = iter->send_only;
}
+
+#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
git://git.onelab.eu / linux-2.6.git / blobdiff