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IPoIB: Consolidate private neighbour data handling 

Consolidate IPoIB's private neighbour data handling into
ipoib_neigh_alloc() and ipoib_neigh_free().  This will make it easier
to keep track of the neighbour structures that IPoIB is handling, and
is a nice cleanup of the code:

add/remove: 2/1 grow/shrink: 1/8 up/down: 100/-178 (-78)
function                                     old     new   delta
ipoib_neigh_alloc                              -      61     +61
ipoib_neigh_free                               -      36     +36
ipoib_mcast_join_finish                     1288    1291      +3
path_rec_completion                          575     573      -2
ipoib_mcast_join_task                        664     660      -4
ipoib_neigh_destructor                       101      92      -9
ipoib_neigh_setup_dev                         14       3     -11
ipoib_neigh_setup                             17       -     -17
path_free                                    238     215     -23
ipoib_mcast_free                             329     306     -23
ipoib_mcast_send                             718     684     -34
neigh_add_path                               705     650     -55

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Michael S. Tsirkin 2006-04-04 19:59:40 +03:00 committed by Roland Dreier
parent ce1823f032
commit d2e0655ede
3 changed files with 34 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/infiniband/ulp/ipoib/ipoib.h
View File

@ -230,6 +230,9 @@ static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
INFINIBAND_ALEN, sizeof(void *));
}
struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh);
void ipoib_neigh_free(struct ipoib_neigh *neigh);
extern struct workqueue_struct *ipoib_workqueue;
/* functions */

41
drivers/infiniband/ulp/ipoib/ipoib_main.c
View File

@ -252,8 +252,8 @@ 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);
@ -481,7 +481,7 @@ 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 +489,6 @@ 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 +501,7 @@ 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 +519,17 @@ 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 +761,7 @@ 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 +770,26 @@ 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;

7
drivers/infiniband/ulp/ipoib/ipoib_multicast.c
View File

@ -114,8 +114,7 @@ static void ipoib_mcast_free(struct ipoib_mcast *mcast)
*/
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);
@ -772,13 +771,11 @@ out:
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);
}
}