---

yaml
---
r: 320707
b: refs/heads/master
c: b63b70d
h: refs/heads/master
i:
  320705: 0e92ab3
  320703: 394a752
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0764c76ecb06987749bce49657e473e6605f09c4
+refs/heads/master: b63b70d8774175b6f8393c495fe455f0fba55ce1

trunk/drivers/infiniband/core/cma.c

@@ -3064,7 +3064,10 @@ static int cma_join_ib_multicast(struct rdma_id_private *id_priv,
 						id_priv->id.port_num, &rec,
 						comp_mask, GFP_KERNEL,
 						cma_ib_mc_handler, mc);
-	return PTR_RET(mc->multicast.ib);
+	if (IS_ERR(mc->multicast.ib))
+		return PTR_ERR(mc->multicast.ib);
+
+	return 0;
 }
 
 static void iboe_mcast_work_handler(struct work_struct *work)

trunk/drivers/infiniband/core/ucma.c

@@ -1002,18 +1002,23 @@ static ssize_t ucma_set_option(struct ucma_file *file, const char __user *inbuf,
 	if (IS_ERR(ctx))
 		return PTR_ERR(ctx);
 
-	optval = memdup_user((void __user *) (unsigned long) cmd.optval,
-			     cmd.optlen);
-	if (IS_ERR(optval)) {
-		ret = PTR_ERR(optval);
-		goto out;
+	optval = kmalloc(cmd.optlen, GFP_KERNEL);
+	if (!optval) {
+		ret = -ENOMEM;
+		goto out1;
+	}
+
+	if (copy_from_user(optval, (void __user *) (unsigned long) cmd.optval,
+			   cmd.optlen)) {
+		ret = -EFAULT;
+		goto out2;
 	}
 
 	ret = ucma_set_option_level(ctx, cmd.level, cmd.optname, optval,
 				    cmd.optlen);
+out2:
 	kfree(optval);
-
-out:
+out1:
 	ucma_put_ctx(ctx);
 	return ret;
 }

trunk/drivers/infiniband/ulp/ipoib/ipoib.h

@@ -92,6 +92,8 @@ enum {
 	IPOIB_STOP_REAPER	  = 7,
 	IPOIB_FLAG_ADMIN_CM	  = 9,
 	IPOIB_FLAG_UMCAST	  = 10,
+	IPOIB_STOP_NEIGH_GC	  = 11,
+	IPOIB_NEIGH_TBL_FLUSH	  = 12,
 
 	IPOIB_MAX_BACKOFF_SECONDS = 16,
 
@@ -260,6 +262,20 @@ struct ipoib_ethtool_st {
 	u16     max_coalesced_frames;
 };
 
+struct ipoib_neigh_hash {
+	struct ipoib_neigh __rcu      **buckets;
+	struct rcu_head			rcu;
+	u32				mask;
+	u32				size;
+};
+
+struct ipoib_neigh_table {
+	struct ipoib_neigh_hash __rcu  *htbl;
+	rwlock_t			rwlock;
+	atomic_t			entries;
+	struct completion		flushed;
+};
+
 /*
  * Device private locking: network stack tx_lock protects members used
  * in TX fast path, lock protects everything else.  lock nests inside
@@ -279,6 +295,8 @@ struct ipoib_dev_priv {
 	struct rb_root  path_tree;
 	struct list_head path_list;
 
+	struct ipoib_neigh_table ntbl;
+
 	struct ipoib_mcast *broadcast;
 	struct list_head multicast_list;
 	struct rb_root multicast_tree;
@@ -291,7 +309,7 @@ struct ipoib_dev_priv {
 	struct work_struct flush_heavy;
 	struct work_struct restart_task;
 	struct delayed_work ah_reap_task;
-
+	struct delayed_work neigh_reap_task;
 	struct ib_device *ca;
 	u8		  port;
 	u16		  pkey;
@@ -377,13 +395,16 @@ struct ipoib_neigh {
 #ifdef CONFIG_INFINIBAND_IPOIB_CM
 	struct ipoib_cm_tx *cm;
 #endif
-	union ib_gid	    dgid;
+	u8     daddr[INFINIBAND_ALEN];
 	struct sk_buff_head queue;
 
-	struct neighbour   *neighbour;
 	struct net_device *dev;
 
 	struct list_head    list;
+	struct ipoib_neigh __rcu *hnext;
+	struct rcu_head     rcu;
+	atomic_t	    refcnt;
+	unsigned long       alive;
 };
 
 #define IPOIB_UD_MTU(ib_mtu)		(ib_mtu - IPOIB_ENCAP_LEN)
@@ -394,21 +415,17 @@ static inline int ipoib_ud_need_sg(unsigned int ib_mtu)
 	return IPOIB_UD_BUF_SIZE(ib_mtu) > PAGE_SIZE;
 }
 
-/*
- * We stash a pointer to our private neighbour information after our
- * hardware address in neigh->ha.  The ALIGN() expression here makes
- * sure that this pointer is stored aligned so that an unaligned
- * load is not needed to dereference it.
- */
-static inline struct ipoib_neigh **to_ipoib_neigh(struct neighbour *neigh)
+void ipoib_neigh_dtor(struct ipoib_neigh *neigh);
+static inline void ipoib_neigh_put(struct ipoib_neigh *neigh)
 {
-	return (void*) neigh + ALIGN(offsetof(struct neighbour, ha) +
-				     INFINIBAND_ALEN, sizeof(void *));
+	if (atomic_dec_and_test(&neigh->refcnt))
+		ipoib_neigh_dtor(neigh);
 }
-
-struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neigh,
+struct ipoib_neigh *ipoib_neigh_get(struct net_device *dev, u8 *daddr);
+struct ipoib_neigh *ipoib_neigh_alloc(u8 *daddr,
 				      struct net_device *dev);
-void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh);
+void ipoib_neigh_free(struct ipoib_neigh *neigh);
+void ipoib_del_neighs_by_gid(struct net_device *dev, u8 *gid);
 
 extern struct workqueue_struct *ipoib_workqueue;
 
@@ -425,7 +442,6 @@ static inline void ipoib_put_ah(struct ipoib_ah *ah)
 {
 	kref_put(&ah->ref, ipoib_free_ah);
 }
-
 int ipoib_open(struct net_device *dev);
 int ipoib_add_pkey_attr(struct net_device *dev);
 int ipoib_add_umcast_attr(struct net_device *dev);
@@ -455,7 +471,7 @@ void ipoib_dev_cleanup(struct net_device *dev);
 
 void ipoib_mcast_join_task(struct work_struct *work);
 void ipoib_mcast_carrier_on_task(struct work_struct *work);
-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);
 
 void ipoib_mcast_restart_task(struct work_struct *work);
 int ipoib_mcast_start_thread(struct net_device *dev);
@@ -517,10 +533,10 @@ static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 		test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 }
 
-static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
+static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 {
 	struct ipoib_dev_priv *priv = netdev_priv(dev);
-	return IPOIB_CM_SUPPORTED(n->ha) &&
+	return IPOIB_CM_SUPPORTED(hwaddr) &&
 		test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
 }
 
@@ -575,7 +591,7 @@ static inline int ipoib_cm_admin_enabled(struct net_device *dev)
 {
 	return 0;
 }
-static inline int ipoib_cm_enabled(struct net_device *dev, struct neighbour *n)
+static inline int ipoib_cm_enabled(struct net_device *dev, u8 *hwaddr)
 
 {
 	return 0;

trunk/drivers/infiniband/ulp/ipoib/ipoib_cm.c

@@ -811,9 +811,7 @@ void ipoib_cm_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
 		if (neigh) {
 			neigh->cm = NULL;
 			list_del(&neigh->list);
-			if (neigh->ah)
-				ipoib_put_ah(neigh->ah);
-			ipoib_neigh_free(dev, neigh);
+			ipoib_neigh_free(neigh);
 
 			tx->neigh = NULL;
 		}
@@ -1230,9 +1228,7 @@ static int ipoib_cm_tx_handler(struct ib_cm_id *cm_id,
 		if (neigh) {
 			neigh->cm = NULL;
 			list_del(&neigh->list);
-			if (neigh->ah)
-				ipoib_put_ah(neigh->ah);
-			ipoib_neigh_free(dev, neigh);
+			ipoib_neigh_free(neigh);
 
 			tx->neigh = NULL;
 		}
@@ -1279,7 +1275,7 @@ void ipoib_cm_destroy_tx(struct ipoib_cm_tx *tx)
 		list_move(&tx->list, &priv->cm.reap_list);
 		queue_work(ipoib_workqueue, &priv->cm.reap_task);
 		ipoib_dbg(priv, "Reap connection for gid %pI6\n",
-			  tx->neigh->dgid.raw);
+			  tx->neigh->daddr + 4);
 		tx->neigh = NULL;
 	}
 }
@@ -1304,7 +1300,7 @@ static void ipoib_cm_tx_start(struct work_struct *work)
 		p = list_entry(priv->cm.start_list.next, typeof(*p), list);
 		list_del_init(&p->list);
 		neigh = p->neigh;
-		qpn = IPOIB_QPN(neigh->neighbour->ha);
+		qpn = IPOIB_QPN(neigh->daddr);
 		memcpy(&pathrec, &p->path->pathrec, sizeof pathrec);
 
 		spin_unlock_irqrestore(&priv->lock, flags);
@@ -1320,9 +1316,7 @@ static void ipoib_cm_tx_start(struct work_struct *work)
 			if (neigh) {
 				neigh->cm = NULL;
 				list_del(&neigh->list);
-				if (neigh->ah)
-					ipoib_put_ah(neigh->ah);
-				ipoib_neigh_free(dev, neigh);
+				ipoib_neigh_free(neigh);
 			}
 			list_del(&p->list);
 			kfree(p);