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path: root/drivers/infiniband/ulp/ipoib/ipoib_main.c
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Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_main.c')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_main.c118
1 files changed, 85 insertions, 33 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 704f48e0b6a..475d98fa9e2 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -58,6 +58,11 @@ module_param_named(debug_level, ipoib_debug_level, int, 0644);
MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
#endif
+struct ipoib_path_iter {
+ struct net_device *dev;
+ struct ipoib_path path;
+};
+
static const u8 ipv4_bcast_addr[] = {
0x00, 0xff, 0xff, 0xff,
0xff, 0x12, 0x40, 0x1b, 0x00, 0x00, 0x00, 0x00,
@@ -89,8 +94,10 @@ int ipoib_open(struct net_device *dev)
if (ipoib_ib_dev_open(dev))
return -EINVAL;
- if (ipoib_ib_dev_up(dev))
+ if (ipoib_ib_dev_up(dev)) {
+ ipoib_ib_dev_stop(dev);
return -EINVAL;
+ }
if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) {
struct ipoib_dev_priv *cpriv;
@@ -250,6 +257,64 @@ static void path_free(struct net_device *dev, struct ipoib_path *path)
kfree(path);
}
+#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
+
+struct ipoib_path_iter *ipoib_path_iter_init(struct net_device *dev)
+{
+ struct ipoib_path_iter *iter;
+
+ iter = kmalloc(sizeof *iter, GFP_KERNEL);
+ if (!iter)
+ return NULL;
+
+ iter->dev = dev;
+ memset(iter->path.pathrec.dgid.raw, 0, 16);
+
+ if (ipoib_path_iter_next(iter)) {
+ kfree(iter);
+ return NULL;
+ }
+
+ return iter;
+}
+
+int ipoib_path_iter_next(struct ipoib_path_iter *iter)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(iter->dev);
+ struct rb_node *n;
+ struct ipoib_path *path;
+ int ret = 1;
+
+ spin_lock_irq(&priv->lock);
+
+ n = rb_first(&priv->path_tree);
+
+ while (n) {
+ path = rb_entry(n, struct ipoib_path, rb_node);
+
+ if (memcmp(iter->path.pathrec.dgid.raw, path->pathrec.dgid.raw,
+ sizeof (union ib_gid)) < 0) {
+ iter->path = *path;
+ ret = 0;
+ break;
+ }
+
+ n = rb_next(n);
+ }
+
+ spin_unlock_irq(&priv->lock);
+
+ return ret;
+}
+
+void ipoib_path_iter_read(struct ipoib_path_iter *iter,
+ struct ipoib_path *path)
+{
+ *path = iter->path;
+}
+
+#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
+
void ipoib_flush_paths(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
@@ -335,9 +400,9 @@ static void path_rec_completion(int status,
while ((skb = __skb_dequeue(&neigh->queue)))
__skb_queue_tail(&skqueue, skb);
}
- } else
- path->query = NULL;
+ }
+ path->query = NULL;
complete(&path->done);
spin_unlock_irqrestore(&priv->lock, flags);
@@ -356,19 +421,15 @@ static struct ipoib_path *path_rec_create(struct net_device *dev,
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_path *path;
- path = kmalloc(sizeof *path, GFP_ATOMIC);
+ path = kzalloc(sizeof *path, GFP_ATOMIC);
if (!path)
return NULL;
- path->dev = dev;
- path->pathrec.dlid = 0;
- path->ah = NULL;
+ path->dev = dev;
skb_queue_head_init(&path->queue);
INIT_LIST_HEAD(&path->neigh_list);
- path->query = NULL;
- init_completion(&path->done);
memcpy(path->pathrec.dgid.raw, gid->raw, sizeof (union ib_gid));
path->pathrec.sgid = priv->local_gid;
@@ -386,6 +447,8 @@ static int path_rec_start(struct net_device *dev,
ipoib_dbg(priv, "Start path record lookup for " IPOIB_GID_FMT "\n",
IPOIB_GID_ARG(path->pathrec.dgid));
+ init_completion(&path->done);
+
path->query_id =
ib_sa_path_rec_get(priv->ca, priv->port,
&path->pathrec,
@@ -474,7 +537,7 @@ err:
spin_unlock(&priv->lock);
}
-static void path_lookup(struct sk_buff *skb, struct net_device *dev)
+static void ipoib_path_lookup(struct sk_buff *skb, struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(skb->dev);
@@ -551,11 +614,8 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
struct ipoib_neigh *neigh;
unsigned long flags;
- local_irq_save(flags);
- if (!spin_trylock(&priv->tx_lock)) {
- local_irq_restore(flags);
+ if (!spin_trylock_irqsave(&priv->tx_lock, flags))
return NETDEV_TX_LOCKED;
- }
/*
* Check if our queue is stopped. Since we have the LLTX bit
@@ -569,7 +629,7 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (skb->dst && skb->dst->neighbour) {
if (unlikely(!*to_ipoib_neigh(skb->dst->neighbour))) {
- path_lookup(skb, dev);
+ ipoib_path_lookup(skb, dev);
goto out;
}
@@ -637,8 +697,11 @@ static void ipoib_timeout(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
- ipoib_warn(priv, "transmit timeout: latency %ld\n",
- jiffies - dev->trans_start);
+ ipoib_warn(priv, "transmit timeout: latency %d msecs\n",
+ jiffies_to_msecs(jiffies - dev->trans_start));
+ ipoib_warn(priv, "queue stopped %d, tx_head %u, tx_tail %u\n",
+ netif_queue_stopped(dev),
+ priv->tx_head, priv->tx_tail);
/* XXX reset QP, etc. */
}
@@ -729,25 +792,21 @@ int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port)
/* Allocate RX/TX "rings" to hold queued skbs */
- priv->rx_ring = kmalloc(IPOIB_RX_RING_SIZE * sizeof (struct ipoib_buf),
+ priv->rx_ring = kzalloc(IPOIB_RX_RING_SIZE * sizeof (struct ipoib_rx_buf),
GFP_KERNEL);
if (!priv->rx_ring) {
printk(KERN_WARNING "%s: failed to allocate RX ring (%d entries)\n",
ca->name, IPOIB_RX_RING_SIZE);
goto out;
}
- memset(priv->rx_ring, 0,
- IPOIB_RX_RING_SIZE * sizeof (struct ipoib_buf));
- priv->tx_ring = kmalloc(IPOIB_TX_RING_SIZE * sizeof (struct ipoib_buf),
+ priv->tx_ring = kzalloc(IPOIB_TX_RING_SIZE * sizeof (struct ipoib_tx_buf),
GFP_KERNEL);
if (!priv->tx_ring) {
printk(KERN_WARNING "%s: failed to allocate TX ring (%d entries)\n",
ca->name, IPOIB_TX_RING_SIZE);
goto out_rx_ring_cleanup;
}
- memset(priv->tx_ring, 0,
- IPOIB_TX_RING_SIZE * sizeof (struct ipoib_buf));
/* priv->tx_head & tx_tail are already 0 */
@@ -770,7 +829,7 @@ void ipoib_dev_cleanup(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev), *cpriv, *tcpriv;
- ipoib_delete_debug_file(dev);
+ ipoib_delete_debug_files(dev);
/* Delete any child interfaces first */
list_for_each_entry_safe(cpriv, tcpriv, &priv->child_intfs, list) {
@@ -804,10 +863,6 @@ static void ipoib_setup(struct net_device *dev)
dev->watchdog_timeo = HZ;
- dev->rebuild_header = NULL;
- dev->set_mac_address = NULL;
- dev->header_cache_update = NULL;
-
dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
/*
@@ -983,8 +1038,7 @@ static struct net_device *ipoib_add_port(const char *format,
goto register_failed;
}
- if (ipoib_create_debug_file(priv->dev))
- goto debug_failed;
+ ipoib_create_debug_files(priv->dev);
if (ipoib_add_pkey_attr(priv->dev))
goto sysfs_failed;
@@ -998,9 +1052,7 @@ static struct net_device *ipoib_add_port(const char *format,
return priv->dev;
sysfs_failed:
- ipoib_delete_debug_file(priv->dev);
-
-debug_failed:
+ ipoib_delete_debug_files(priv->dev);
unregister_netdev(priv->dev);
register_failed:
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-11 00:35:40 +0000