#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 <net/dst.h>
+#define IPOIB_QPN(ha) (be32_to_cpup((__be32 *) ha) & 0xffffff)
+
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;
struct workqueue_struct *ipoib_workqueue;
+struct ib_sa_client ipoib_sa_client;
+
static void ipoib_add_one(struct ib_device *device);
static void ipoib_remove_one(struct ib_device *device);
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)) {
return 0;
}
-static struct ipoib_path *__path_find(struct net_device *dev,
- union ib_gid *gid)
+static struct ipoib_path *__path_find(struct net_device *dev, void *gid)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct rb_node *n = priv->path_tree.rb_node;
while (n) {
path = rb_entry(n, struct ipoib_path, rb_node);
- ret = memcmp(gid->raw, path->pathrec.dgid.raw,
+ ret = memcmp(gid, path->pathrec.dgid.raw,
sizeof (union ib_gid));
if (ret < 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(dev, neigh);
}
spin_unlock_irqrestore(&priv->lock, flags);
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->tx_lock);
+ spin_lock(&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(&priv->lock);
+ spin_unlock_irq(&priv->tx_lock);
wait_for_completion(&path->done);
path_free(dev, path);
+ spin_lock_irq(&priv->tx_lock);
+ spin_lock(&priv->lock);
}
+ spin_unlock(&priv->lock);
+ spin_unlock_irq(&priv->tx_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);
}
list_for_each_entry(neigh, &path->neigh_list, list) {
kref_get(&path->ah->ref);
neigh->ah = path->ah;
+ memcpy(&neigh->dgid.raw, &path->pathrec.dgid.raw,
+ sizeof(union ib_gid));
while ((skb = __skb_dequeue(&neigh->queue)))
__skb_queue_tail(&skqueue, skb);
}
}
-static struct ipoib_path *path_rec_create(struct net_device *dev,
- union ib_gid *gid)
+static struct ipoib_path *path_rec_create(struct net_device *dev, void *gid)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_path *path;
INIT_LIST_HEAD(&path->neigh_list);
- memcpy(path->pathrec.dgid.raw, gid->raw, sizeof (union ib_gid));
+ memcpy(path->pathrec.dgid.raw, gid, sizeof (union ib_gid));
path->pathrec.sgid = priv->local_gid;
path->pathrec.pkey = cpu_to_be16(priv->pkey);
path->pathrec.numb_path = 1;
init_completion(&path->done);
path->query_id =
- ib_sa_path_rec_get(priv->ca, priv->port,
+ ib_sa_path_rec_get(&ipoib_sa_client, priv->ca, priv->port,
&path->pathrec,
IB_SA_PATH_REC_DGID |
IB_SA_PATH_REC_SGID |
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);
return;
}
- 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
* inside tx_lock -- no need to save/restore flags.
*/
spin_lock(&priv->lock);
- path = __path_find(dev, (union ib_gid *) (skb->dst->neighbour->ha + 4));
+ path = __path_find(dev, skb->dst->neighbour->ha + 4);
if (!path) {
- path = path_rec_create(dev,
- (union ib_gid *) (skb->dst->neighbour->ha + 4));
+ path = path_rec_create(dev, skb->dst->neighbour->ha + 4);
if (!path)
- goto err;
+ goto err_path;
__path_add(dev, path);
}
if (path->ah) {
kref_get(&path->ah->ref);
neigh->ah = path->ah;
+ memcpy(&neigh->dgid.raw, &path->pathrec.dgid.raw,
+ sizeof(union ib_gid));
- ipoib_send(dev, skb, path->ah,
- be32_to_cpup((__be32 *) skb->dst->neighbour->ha));
+ ipoib_send(dev, skb, path->ah, IPOIB_QPN(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);
- }
if (!path->query && path_rec_start(dev, path))
- goto err;
+ goto err_list;
+
+ __skb_queue_tail(&neigh->queue, skb);
}
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(dev, neigh);
++priv->stats.tx_dropped;
dev_kfree_skb_any(skb);
/* Add in the P_Key for multicasts */
skb->dst->neighbour->ha[8] = (priv->pkey >> 8) & 0xff;
skb->dst->neighbour->ha[9] = priv->pkey & 0xff;
- ipoib_mcast_send(dev, (union ib_gid *) (skb->dst->neighbour->ha + 4), skb);
+ ipoib_mcast_send(dev, skb->dst->neighbour->ha + 4, skb);
}
static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
*/
spin_lock(&priv->lock);
- path = __path_find(dev, (union ib_gid *) (phdr->hwaddr + 4));
+ path = __path_find(dev, phdr->hwaddr + 4);
if (!path) {
- path = path_rec_create(dev,
- (union ib_gid *) (phdr->hwaddr + 4));
+ path = path_rec_create(dev, phdr->hwaddr + 4);
if (path) {
/* put pseudoheader back on for next time */
skb_push(skb, sizeof *phdr);
ipoib_dbg(priv, "Send unicast ARP to %04x\n",
be16_to_cpu(path->pathrec.dlid));
- ipoib_send(dev, skb, path->ah,
- be32_to_cpup((__be32 *) phdr->hwaddr));
+ ipoib_send(dev, skb, path->ah, IPOIB_QPN(phdr->hwaddr));
} else if ((path->query || !path_rec_start(dev, path)) &&
skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
/* put pseudoheader back on for next time */
struct ipoib_neigh *neigh;
unsigned long flags;
- if (!spin_trylock_irqsave(&priv->tx_lock, flags))
+ if (unlikely(!spin_trylock_irqsave(&priv->tx_lock, flags)))
return NETDEV_TX_LOCKED;
/*
return NETDEV_TX_BUSY;
}
- if (skb->dst && skb->dst->neighbour) {
+ if (likely(skb->dst && skb->dst->neighbour)) {
if (unlikely(!*to_ipoib_neigh(skb->dst->neighbour))) {
ipoib_path_lookup(skb, dev);
goto out;
neigh = *to_ipoib_neigh(skb->dst->neighbour);
if (likely(neigh->ah)) {
- ipoib_send(dev, skb, neigh->ah,
- be32_to_cpup((__be32 *) skb->dst->neighbour->ha));
+ if (unlikely(memcmp(&neigh->dgid.raw,
+ skb->dst->neighbour->ha + 4,
+ sizeof(union ib_gid)))) {
+ spin_lock(&priv->lock);
+ /*
+ * It's safe to call ipoib_put_ah() inside
+ * priv->lock here, because we know that
+ * path->ah will always hold one more reference,
+ * so ipoib_put_ah() will never do more than
+ * decrement the ref count.
+ */
+ ipoib_put_ah(neigh->ah);
+ list_del(&neigh->list);
+ ipoib_neigh_free(dev, neigh);
+ spin_unlock(&priv->lock);
+ ipoib_path_lookup(skb, dev);
+ goto out;
+ }
+
+ ipoib_send(dev, skb, neigh->ah, IPOIB_QPN(skb->dst->neighbour->ha));
goto out;
}
phdr->hwaddr[8] = (priv->pkey >> 8) & 0xff;
phdr->hwaddr[9] = priv->pkey & 0xff;
- ipoib_mcast_send(dev, (union ib_gid *) (phdr->hwaddr + 4), skb);
+ ipoib_mcast_send(dev, phdr->hwaddr + 4, skb);
} else {
/* unicast GID -- should be ARP or RARP reply */
IPOIB_GID_FMT "\n",
skb->dst ? "neigh" : "dst",
be16_to_cpup((__be16 *) skb->data),
- be32_to_cpup((__be32 *) phdr->hwaddr),
- IPOIB_GID_ARG(*(union ib_gid *) (phdr->hwaddr + 4)));
+ IPOIB_QPN(phdr->hwaddr),
+ IPOIB_GID_RAW_ARG(phdr->hwaddr + 4));
dev_kfree_skb_any(skb);
++priv->stats.tx_dropped;
goto out;
* 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);
+ 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);
}
ipoib_dbg(priv,
"neigh_destructor for %06x " IPOIB_GID_FMT "\n",
- be32_to_cpup((__be32 *) n->ha),
- IPOIB_GID_ARG(*((union ib_gid *) (n->ha + 4))));
+ IPOIB_QPN(n->ha),
+ IPOIB_GID_RAW_ARG(n->ha + 4));
spin_lock_irqsave(&priv->lock, flags);
if (neigh->ah)
ah = neigh->ah;
list_del(&neigh->list);
- *to_ipoib_neigh(n) = NULL;
- kfree(neigh);
+ ipoib_neigh_free(n->dev, 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;
+ skb_queue_head_init(&neigh->queue);
+
+ return neigh;
+}
+
+void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(dev);
+ struct sk_buff *skb;
+ *to_ipoib_neigh(neigh->neighbour) = NULL;
+ while ((skb = __skb_dequeue(&neigh->queue))) {
+ ++priv->stats.tx_dropped;
+ dev_kfree_skb_any(skb);
+ }
+ 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 = kzalloc(IPOIB_RX_RING_SIZE * sizeof (struct ipoib_rx_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;
}
- priv->tx_ring = kzalloc(IPOIB_TX_RING_SIZE * sizeof (struct ipoib_tx_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;
}
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 */
INIT_LIST_HEAD(&priv->dead_ahs);
INIT_LIST_HEAD(&priv->multicast_list);
- INIT_WORK(&priv->pkey_task, ipoib_pkey_poll, priv->dev);
- INIT_WORK(&priv->mcast_task, ipoib_mcast_join_task, priv->dev);
- INIT_WORK(&priv->flush_task, ipoib_ib_dev_flush, priv->dev);
- INIT_WORK(&priv->restart_task, ipoib_mcast_restart_task, priv->dev);
- INIT_WORK(&priv->ah_reap_task, ipoib_reap_ah, priv->dev);
+ INIT_DELAYED_WORK(&priv->pkey_task, ipoib_pkey_poll);
+ INIT_DELAYED_WORK(&priv->mcast_task, ipoib_mcast_join_task);
+ INIT_WORK(&priv->flush_task, ipoib_ib_dev_flush);
+ INIT_WORK(&priv->restart_task, ipoib_mcast_restart_task);
+ INIT_DELAYED_WORK(&priv->ah_reap_task, ipoib_reap_ah);
}
struct ipoib_dev_priv *ipoib_intf_alloc(const char *name)
struct ipoib_dev_priv *priv;
int s, e, p;
+ if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
+ return;
+
dev_list = kmalloc(sizeof *dev_list, GFP_KERNEL);
if (!dev_list)
return;
INIT_LIST_HEAD(dev_list);
- if (device->node_type == IB_NODE_SWITCH) {
+ if (device->node_type == RDMA_NODE_IB_SWITCH) {
s = 0;
e = 0;
} else {
struct ipoib_dev_priv *priv, *tmp;
struct list_head *dev_list;
+ if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
+ return;
+
dev_list = ib_get_client_data(device, &ipoib_client);
list_for_each_entry_safe(priv, tmp, dev_list, list) {
{
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;
goto err_fs;
}
+ ib_sa_register_client(&ipoib_sa_client);
+
ret = ib_register_client(&ipoib_client);
if (ret)
- goto err_wq;
+ goto err_sa;
return 0;
-err_wq:
+err_sa:
+ ib_sa_unregister_client(&ipoib_sa_client);
destroy_workqueue(ipoib_workqueue);
err_fs:
static void __exit ipoib_cleanup_module(void)
{
ib_unregister_client(&ipoib_client);
+ ib_sa_unregister_client(&ipoib_sa_client);
ipoib_unregister_debugfs();
destroy_workqueue(ipoib_workqueue);
}
git://git.onelab.eu / linux-2.6.git / blobdiff