Merge tag 'v4.4-rc2' into drm-intel-next-queued

Linux 4.4-rc2

Backmerge to get at

commit 1b0e3a049efe471c399674fd954500ce97438d30
Author: Imre Deak <imre.deak@intel.com>
Date:   Thu Nov 5 23:04:11 2015 +0200

    drm/i915/skl: disable display side power well support for now

so that we can proplery re-eanble skl power wells in -next.

Conflicts are just adjacent lines changed, except for intel_fbdev.c
where we need to interleave the changs. Nothing nefarious.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

1 files changed, 45 insertions, 2 deletions

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 2b515ba7e94f..e6af42da28d9 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -857,7 +857,7 @@ static void neigh_probe(struct neighbour *neigh)
 	struct sk_buff *skb = skb_peek_tail(&neigh->arp_queue);
 	/* keep skb alive even if arp_queue overflows */
 	if (skb)
-		skb = skb_copy(skb, GFP_ATOMIC);
+		skb = skb_clone(skb, GFP_ATOMIC);
 	write_unlock(&neigh->lock);
 	neigh->ops->solicit(neigh, skb);
 	atomic_inc(&neigh->probes);
@@ -2235,14 +2235,53 @@ static void neigh_update_notify(struct neighbour *neigh)
 	__neigh_notify(neigh, RTM_NEWNEIGH, 0);
 }
 
+static bool neigh_master_filtered(struct net_device *dev, int master_idx)
+{
+	struct net_device *master;
+
+	if (!master_idx)
+		return false;
+
+	master = netdev_master_upper_dev_get(dev);
+	if (!master || master->ifindex != master_idx)
+		return true;
+
+	return false;
+}
+
+static bool neigh_ifindex_filtered(struct net_device *dev, int filter_idx)
+{
+	if (filter_idx && dev->ifindex != filter_idx)
+		return true;
+
+	return false;
+}
+
 static int neigh_dump_table(struct neigh_table *tbl, struct sk_buff *skb,
 			    struct netlink_callback *cb)
 {
 	struct net *net = sock_net(skb->sk);
+	const struct nlmsghdr *nlh = cb->nlh;
+	struct nlattr *tb[NDA_MAX + 1];
 	struct neighbour *n;
 	int rc, h, s_h = cb->args[1];
 	int idx, s_idx = idx = cb->args[2];
 	struct neigh_hash_table *nht;
+	int filter_master_idx = 0, filter_idx = 0;
+	unsigned int flags = NLM_F_MULTI;
+	int err;
+
+	err = nlmsg_parse(nlh, sizeof(struct ndmsg), tb, NDA_MAX, NULL);
+	if (!err) {
+		if (tb[NDA_IFINDEX])
+			filter_idx = nla_get_u32(tb[NDA_IFINDEX]);
+
+		if (tb[NDA_MASTER])
+			filter_master_idx = nla_get_u32(tb[NDA_MASTER]);
+
+		if (filter_idx || filter_master_idx)
+			flags |= NLM_F_DUMP_FILTERED;
+	}
 
 	rcu_read_lock_bh();
 	nht = rcu_dereference_bh(tbl->nht);
@@ -2255,12 +2294,16 @@ static int neigh_dump_table(struct neigh_table *tbl, struct sk_buff *skb,
 		     n = rcu_dereference_bh(n->next)) {
 			if (!net_eq(dev_net(n->dev), net))
 				continue;
+			if (neigh_ifindex_filtered(n->dev, filter_idx))
+				continue;
+			if (neigh_master_filtered(n->dev, filter_master_idx))
+				continue;
 			if (idx < s_idx)
 				goto next;
 			if (neigh_fill_info(skb, n, NETLINK_CB(cb->skb).portid,
 					    cb->nlh->nlmsg_seq,
 					    RTM_NEWNEIGH,
-					    NLM_F_MULTI) < 0) {
+					    flags) < 0) {
 				rc = -1;
 				goto out;
 			}