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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.c88
1 files changed, 57 insertions, 31 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 9b0bd7c746c..cb078a7d0bf 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -41,6 +41,7 @@
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
+#include <linux/kernel.h>
#include <linux/if_arp.h> /* For ARPHRD_xxx */
@@ -53,6 +54,14 @@ 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;
@@ -252,8 +261,8 @@ static void path_free(struct net_device *dev, struct ipoib_path *path)
*/
if (neigh->ah)
ipoib_put_ah(neigh->ah);
- *to_ipoib_neigh(neigh->neighbour) = NULL;
- kfree(neigh);
+
+ ipoib_neigh_free(neigh);
}
spin_unlock_irqrestore(&priv->lock, flags);
@@ -327,9 +336,8 @@ 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);
@@ -337,14 +345,15 @@ void ipoib_flush_paths(struct net_device *dev)
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,
@@ -373,16 +382,9 @@ 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);
}
@@ -481,7 +483,7 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
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);
@@ -489,8 +491,6 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
}
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
@@ -503,7 +503,7 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
path = path_rec_create(dev,
(union ib_gid *) (skb->dst->neighbour->ha + 4));
if (!path)
- goto err;
+ goto err_path;
__path_add(dev, path);
}
@@ -521,17 +521,17 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
__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);
- kfree(neigh);
+err_path:
+ ipoib_neigh_free(neigh);
++priv->stats.tx_dropped;
dev_kfree_skb_any(skb);
@@ -763,8 +763,7 @@ 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);
@@ -773,6 +772,26 @@ static void ipoib_neigh_destructor(struct neighbour *n)
ipoib_put_ah(ah);
}
+struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neighbour)
+{
+ struct ipoib_neigh *neigh;
+
+ 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_destructor = ipoib_neigh_destructor;
@@ -785,20 +804,19 @@ int ipoib_dev_init(struct net_device *dev, struct ib_device *ca, int port)
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;
}
@@ -866,7 +884,7 @@ static void ipoib_setup(struct net_device *dev)
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 */
@@ -1118,6 +1136,14 @@ 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;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-22 07:31:30 +0000