/*
* Copyright (c) 2004 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 "ipoib.h"
-#include <linux/version.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
+#include <linux/kernel.h>
#include <linux/if_arp.h> /* For ARPHRD_xxx */
#include <linux/ip.h>
#include <linux/in.h>
+#include <net/dst.h>
+
MODULE_AUTHOR("Roland Dreier");
MODULE_DESCRIPTION("IP-over-InfiniBand net driver");
MODULE_LICENSE("Dual BSD/GPL");
+int ipoib_sendq_size __read_mostly = IPOIB_TX_RING_SIZE;
+int ipoib_recvq_size __read_mostly = IPOIB_RX_RING_SIZE;
+
+module_param_named(send_queue_size, ipoib_sendq_size, int, 0444);
+MODULE_PARM_DESC(send_queue_size, "Number of descriptors in send queue");
+module_param_named(recv_queue_size, ipoib_recvq_size, int, 0444);
+MODULE_PARM_DESC(recv_queue_size, "Number of descriptors in receive queue");
+
#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
int ipoib_debug_level;
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,
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;
/* Bring up any child interfaces too */
- down(&priv->vlan_mutex);
+ mutex_lock(&priv->vlan_mutex);
list_for_each_entry(cpriv, &priv->child_intfs, list) {
int flags;
dev_change_flags(cpriv->dev, flags | IFF_UP);
}
- up(&priv->vlan_mutex);
+ mutex_unlock(&priv->vlan_mutex);
}
netif_start_queue(dev);
netif_stop_queue(dev);
- ipoib_ib_dev_down(dev);
+ /*
+ * Now flush workqueue to make sure a scheduled task doesn't
+ * bring our internal state back up.
+ */
+ flush_workqueue(ipoib_workqueue);
+
+ ipoib_ib_dev_down(dev, 1);
ipoib_ib_dev_stop(dev);
if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) {
struct ipoib_dev_priv *cpriv;
/* Bring down any child interfaces too */
- down(&priv->vlan_mutex);
+ mutex_lock(&priv->vlan_mutex);
list_for_each_entry(cpriv, &priv->child_intfs, list) {
int flags;
dev_change_flags(cpriv->dev, flags & ~IFF_UP);
}
- up(&priv->vlan_mutex);
+ mutex_unlock(&priv->vlan_mutex);
}
return 0;
*/
if (neigh->ah)
ipoib_put_ah(neigh->ah);
- *to_ipoib_neigh(neigh->neighbour) = NULL;
- neigh->neighbour->ops->destructor = NULL;
- kfree(neigh);
+
+ ipoib_neigh_free(neigh);
}
spin_unlock_irqrestore(&priv->lock, flags);
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);
struct ipoib_path *path, *tp;
LIST_HEAD(remove_list);
- unsigned long flags;
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
list_splice(&priv->path_list, &remove_list);
INIT_LIST_HEAD(&priv->path_list);
list_for_each_entry(path, &remove_list, list)
rb_erase(&path->rb_node, &priv->path_tree);
- spin_unlock_irqrestore(&priv->lock, flags);
-
list_for_each_entry_safe(path, tp, &remove_list, list) {
if (path->query)
ib_sa_cancel_query(path->query_id, path->query);
+ spin_unlock_irq(&priv->lock);
wait_for_completion(&path->done);
path_free(dev, path);
+ spin_lock_irq(&priv->lock);
}
+ spin_unlock_irq(&priv->lock);
}
static void path_rec_completion(int status,
struct ib_ah_attr av = {
.dlid = be16_to_cpu(pathrec->dlid),
.sl = pathrec->sl,
- .port_num = priv->port
+ .port_num = priv->port,
+ .static_rate = pathrec->rate
};
- int path_rate = ib_sa_rate_enum_to_int(pathrec->rate);
-
- if (path_rate > 0 && priv->local_rate > path_rate)
- av.static_rate = (priv->local_rate - 1) / path_rate;
-
- ipoib_dbg(priv, "static_rate %d for local port %dX, path %dX\n",
- av.static_rate, priv->local_rate,
- ib_sa_rate_enum_to_int(pathrec->rate));
ah = ipoib_create_ah(dev, priv->pd, &av);
}
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);
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;
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,
struct ipoib_path *path;
struct ipoib_neigh *neigh;
- neigh = kmalloc(sizeof *neigh, GFP_ATOMIC);
+ neigh = ipoib_neigh_alloc(skb->dst->neighbour);
if (!neigh) {
++priv->stats.tx_dropped;
dev_kfree_skb_any(skb);
}
skb_queue_head_init(&neigh->queue);
- neigh->neighbour = skb->dst->neighbour;
- *to_ipoib_neigh(skb->dst->neighbour) = neigh;
/*
* We can only be called from ipoib_start_xmit, so we're
path = path_rec_create(dev,
(union ib_gid *) (skb->dst->neighbour->ha + 4));
if (!path)
- goto err;
+ goto err_path;
__path_add(dev, path);
}
list_add_tail(&neigh->list, &path->neigh_list);
- if (path->pathrec.dlid) {
+ if (path->ah) {
kref_get(&path->ah->ref);
neigh->ah = path->ah;
be32_to_cpup((__be32 *) skb->dst->neighbour->ha));
} else {
neigh->ah = NULL;
- if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
- __skb_queue_tail(&neigh->queue, skb);
- } else {
- ++priv->stats.tx_dropped;
- dev_kfree_skb_any(skb);
- }
+ __skb_queue_tail(&neigh->queue, skb);
if (!path->query && path_rec_start(dev, path))
- goto err;
+ goto err_list;
}
spin_unlock(&priv->lock);
return;
-err:
- *to_ipoib_neigh(skb->dst->neighbour) = NULL;
+err_list:
list_del(&neigh->list);
- neigh->neighbour->ops->destructor = NULL;
- kfree(neigh);
+err_path:
+ ipoib_neigh_free(neigh);
++priv->stats.tx_dropped;
dev_kfree_skb_any(skb);
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);
return;
}
- if (path->pathrec.dlid) {
+ if (path->ah) {
ipoib_dbg(priv, "Send unicast ARP to %04x\n",
be16_to_cpu(path->pathrec.dlid));
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
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;
}
ipoib_mcast_send(dev, (union ib_gid *) (phdr->hwaddr + 4), skb);
} else {
- /* unicast GID -- should be ARP reply */
+ /* unicast GID -- should be ARP or RARP reply */
- if (be16_to_cpup((u16 *) skb->data) != ETH_P_ARP) {
+ if ((be16_to_cpup((__be16 *) skb->data) != ETH_P_ARP) &&
+ (be16_to_cpup((__be16 *) skb->data) != ETH_P_RARP)) {
ipoib_warn(priv, "Unicast, no %s: type %04x, QPN %06x "
IPOIB_GID_FMT "\n",
skb->dst ? "neigh" : "dst",
- be16_to_cpup((u16 *) skb->data),
- be32_to_cpup((u32 *) phdr->hwaddr),
+ be16_to_cpup((__be16 *) skb->data),
+ be32_to_cpup((__be32 *) phdr->hwaddr),
IPOIB_GID_ARG(*(union ib_gid *) (phdr->hwaddr + 4)));
dev_kfree_skb_any(skb);
++priv->stats.tx_dropped;
{
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. */
}
* destination address onto the front of the skb so we can
* figure out where to send the packet later.
*/
- if (!skb->dst || !skb->dst->neighbour) {
+ if ((!skb->dst || !skb->dst->neighbour) && daddr) {
struct ipoib_pseudoheader *phdr =
(struct ipoib_pseudoheader *) skb_push(skb, sizeof *phdr);
memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN);
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
- schedule_work(&priv->restart_task);
+ if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) {
+ ipoib_dbg(priv, "IPOIB_FLAG_OPER_UP not set");
+ return;
+ }
+
+ queue_work(ipoib_workqueue, &priv->restart_task);
}
static void ipoib_neigh_destructor(struct neighbour *n)
if (neigh->ah)
ah = neigh->ah;
list_del(&neigh->list);
- *to_ipoib_neigh(n) = NULL;
- kfree(neigh);
+ ipoib_neigh_free(neigh);
}
spin_unlock_irqrestore(&priv->lock, flags);
ipoib_put_ah(ah);
}
-static int ipoib_neigh_setup(struct neighbour *neigh)
+struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neighbour)
{
- /*
- * Is this kosher? I can't find anybody in the kernel that
- * sets neigh->destructor, so we should be able to set it here
- * without trouble.
- */
- neigh->ops->destructor = ipoib_neigh_destructor;
+ struct ipoib_neigh *neigh;
- return 0;
+ neigh = kmalloc(sizeof *neigh, GFP_ATOMIC);
+ if (!neigh)
+ return NULL;
+
+ neigh->neighbour = neighbour;
+ *to_ipoib_neigh(neighbour) = neigh;
+
+ return neigh;
+}
+
+void ipoib_neigh_free(struct ipoib_neigh *neigh)
+{
+ *to_ipoib_neigh(neigh->neighbour) = NULL;
+ kfree(neigh);
}
static int ipoib_neigh_setup_dev(struct net_device *dev, struct neigh_parms *parms)
{
- parms->neigh_setup = ipoib_neigh_setup;
+ parms->neigh_destructor = ipoib_neigh_destructor;
return 0;
}
struct ipoib_dev_priv *priv = netdev_priv(dev);
/* 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_recvq_size * sizeof *priv->rx_ring,
GFP_KERNEL);
if (!priv->rx_ring) {
printk(KERN_WARNING "%s: failed to allocate RX ring (%d entries)\n",
- ca->name, IPOIB_RX_RING_SIZE);
+ ca->name, ipoib_recvq_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_sendq_size * sizeof *priv->tx_ring,
GFP_KERNEL);
if (!priv->tx_ring) {
printk(KERN_WARNING "%s: failed to allocate TX ring (%d entries)\n",
- ca->name, IPOIB_TX_RING_SIZE);
+ ca->name, ipoib_sendq_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 */
{
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) {
ipoib_ib_dev_cleanup(dev);
- if (priv->rx_ring) {
- kfree(priv->rx_ring);
- priv->rx_ring = NULL;
- }
+ kfree(priv->rx_ring);
+ kfree(priv->tx_ring);
- if (priv->tx_ring) {
- kfree(priv->tx_ring);
- priv->tx_ring = NULL;
- }
+ priv->rx_ring = NULL;
+ priv->tx_ring = NULL;
}
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;
/*
dev->hard_header_len = IPOIB_ENCAP_LEN + INFINIBAND_ALEN;
dev->addr_len = INFINIBAND_ALEN;
dev->type = ARPHRD_INFINIBAND;
- dev->tx_queue_len = IPOIB_TX_RING_SIZE * 2;
+ dev->tx_queue_len = ipoib_sendq_size * 2;
dev->features = NETIF_F_VLAN_CHALLENGED | NETIF_F_LLTX;
/* MTU will be reset when mcast join happens */
spin_lock_init(&priv->lock);
spin_lock_init(&priv->tx_lock);
- init_MUTEX(&priv->mcast_mutex);
- init_MUTEX(&priv->vlan_mutex);
+ mutex_init(&priv->mcast_mutex);
+ mutex_init(&priv->vlan_mutex);
INIT_LIST_HEAD(&priv->path_list);
INIT_LIST_HEAD(&priv->child_intfs);
if (pkey < 0 || pkey > 0xffff)
return -EINVAL;
+ /*
+ * Set the full membership bit, so that we join the right
+ * broadcast group, etc.
+ */
+ pkey |= 0x8000;
+
ret = ipoib_vlan_add(container_of(cdev, struct net_device, class_dev),
pkey);
goto alloc_mem_failed;
}
+ /*
+ * Set the full membership bit, so that we join the right
+ * broadcast group, etc.
+ */
+ priv->pkey |= 0x8000;
+
priv->dev->broadcast[8] = priv->pkey >> 8;
priv->dev->broadcast[9] = priv->pkey & 0xff;
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;
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:
ib_unregister_event_handler(&priv->event_handler);
+ flush_scheduled_work();
event_failed:
ipoib_dev_cleanup(priv->dev);
list_for_each_entry_safe(priv, tmp, dev_list, list) {
ib_unregister_event_handler(&priv->event_handler);
+ flush_scheduled_work();
unregister_netdev(priv->dev);
ipoib_dev_cleanup(priv->dev);
free_netdev(priv->dev);
}
+
+ kfree(dev_list);
}
static int __init ipoib_init_module(void)
{
int ret;
+ ipoib_recvq_size = roundup_pow_of_two(ipoib_recvq_size);
+ ipoib_recvq_size = min(ipoib_recvq_size, IPOIB_MAX_QUEUE_SIZE);
+ ipoib_recvq_size = max(ipoib_recvq_size, IPOIB_MIN_QUEUE_SIZE);
+
+ ipoib_sendq_size = roundup_pow_of_two(ipoib_sendq_size);
+ ipoib_sendq_size = min(ipoib_sendq_size, IPOIB_MAX_QUEUE_SIZE);
+ ipoib_sendq_size = max(ipoib_sendq_size, IPOIB_MIN_QUEUE_SIZE);
+
ret = ipoib_register_debugfs();
if (ret)
return ret;
git://git.onelab.eu / linux-2.6.git / blobdiff