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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-31 18:59:55 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-31 18:59:55 -0700 |
commit | 941c8726e4e737e74d418ccec3d8e7b946a65541 (patch) | |
tree | 0c3585d8bc16fb6fa7c0efd9db9d32da1ea7bd6e /drivers/infiniband/ulp/ipoib/ipoib_multicast.c | |
parent | 8762541f067d371320731510669e27f5cc40af38 (diff) | |
parent | 1da9b6b43e31a5d88a82cc70b8f57090c9dd2be8 (diff) | |
download | talos-op-linux-941c8726e4e737e74d418ccec3d8e7b946a65541.tar.gz talos-op-linux-941c8726e4e737e74d418ccec3d8e7b946a65541.zip |
Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull final RDMA changes from Roland Dreier:
- Fix IPoIB to stop using unsafe linkage between networking neighbour
layer and private path database.
- Small fixes for bugs found by Fengguang Wu's automated builds.
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IPoIB: Use a private hash table for path lookup in xmit path
IB/qib: Fix size of cc_supported_table_entries
RDMA/ucma: Convert open-coded equivalent to memdup_user()
RDMA/ocrdma: Fix check of GSI CQs
RDMA/cma: Use PTR_RET rather than if (IS_ERR(...)) + PTR_ERR
Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_multicast.c')
-rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_multicast.c | 57 |
1 files changed, 19 insertions, 38 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c index 7cecb16d3d48..13f4aa7593c8 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c @@ -69,28 +69,13 @@ struct ipoib_mcast_iter { static void ipoib_mcast_free(struct ipoib_mcast *mcast) { struct net_device *dev = mcast->dev; - struct ipoib_dev_priv *priv = netdev_priv(dev); - struct ipoib_neigh *neigh, *tmp; int tx_dropped = 0; ipoib_dbg_mcast(netdev_priv(dev), "deleting multicast group %pI6\n", mcast->mcmember.mgid.raw); - spin_lock_irq(&priv->lock); - - list_for_each_entry_safe(neigh, tmp, &mcast->neigh_list, list) { - /* - * It's safe to call ipoib_put_ah() inside priv->lock - * here, because we know that mcast->ah will always - * hold one more reference, so ipoib_put_ah() will - * never do more than decrement the ref count. - */ - if (neigh->ah) - ipoib_put_ah(neigh->ah); - ipoib_neigh_free(dev, neigh); - } - - spin_unlock_irq(&priv->lock); + /* remove all neigh connected to this mcast */ + ipoib_del_neighs_by_gid(dev, mcast->mcmember.mgid.raw); if (mcast->ah) ipoib_put_ah(mcast->ah); @@ -655,17 +640,12 @@ static int ipoib_mcast_leave(struct net_device *dev, struct ipoib_mcast *mcast) return 0; } -void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb) +void ipoib_mcast_send(struct net_device *dev, u8 *daddr, struct sk_buff *skb) { struct ipoib_dev_priv *priv = netdev_priv(dev); - struct dst_entry *dst = skb_dst(skb); struct ipoib_mcast *mcast; - struct neighbour *n; unsigned long flags; - - n = NULL; - if (dst) - n = dst_neigh_lookup_skb(dst, skb); + void *mgid = daddr + 4; spin_lock_irqsave(&priv->lock, flags); @@ -721,28 +701,29 @@ void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb) out: if (mcast && mcast->ah) { - if (n) { - if (!*to_ipoib_neigh(n)) { - struct ipoib_neigh *neigh; - - neigh = ipoib_neigh_alloc(n, skb->dev); - if (neigh) { - kref_get(&mcast->ah->ref); - neigh->ah = mcast->ah; - list_add_tail(&neigh->list, - &mcast->neigh_list); - } + struct ipoib_neigh *neigh; + + spin_unlock_irqrestore(&priv->lock, flags); + neigh = ipoib_neigh_get(dev, daddr); + spin_lock_irqsave(&priv->lock, flags); + if (!neigh) { + spin_unlock_irqrestore(&priv->lock, flags); + neigh = ipoib_neigh_alloc(daddr, dev); + spin_lock_irqsave(&priv->lock, flags); + if (neigh) { + kref_get(&mcast->ah->ref); + neigh->ah = mcast->ah; + list_add_tail(&neigh->list, &mcast->neigh_list); } - neigh_release(n); } spin_unlock_irqrestore(&priv->lock, flags); ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN); + if (neigh) + ipoib_neigh_put(neigh); return; } unlock: - if (n) - neigh_release(n); spin_unlock_irqrestore(&priv->lock, flags); } |