From 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?=
 <emulatorman@parabola.nu>
Date: Fri, 25 Mar 2016 03:53:42 -0300
Subject: Linux-libre 4.5-gnu

---
 net/core/rtnetlink.c | 27 ++++++++++++++++++---------
 1 file changed, 18 insertions(+), 9 deletions(-)

(limited to 'net/core/rtnetlink.c')

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 34ba7a088..8261d95dd 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1027,6 +1027,7 @@ static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev)
 {
 	int err;
 	struct switchdev_attr attr = {
+		.orig_dev = dev,
 		.id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
 		.flags = SWITCHDEV_F_NO_RECURSE,
 	};
@@ -2563,7 +2564,7 @@ static int nlmsg_populate_fdb_fill(struct sk_buff *skb,
 				   struct net_device *dev,
 				   u8 *addr, u16 vid, u32 pid, u32 seq,
 				   int type, unsigned int flags,
-				   int nlflags)
+				   int nlflags, u16 ndm_state)
 {
 	struct nlmsghdr *nlh;
 	struct ndmsg *ndm;
@@ -2579,7 +2580,7 @@ static int nlmsg_populate_fdb_fill(struct sk_buff *skb,
 	ndm->ndm_flags	 = flags;
 	ndm->ndm_type	 = 0;
 	ndm->ndm_ifindex = dev->ifindex;
-	ndm->ndm_state   = NUD_PERMANENT;
+	ndm->ndm_state   = ndm_state;
 
 	if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
 		goto nla_put_failure;
@@ -2600,7 +2601,8 @@ static inline size_t rtnl_fdb_nlmsg_size(void)
 	return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN);
 }
 
-static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type)
+static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type,
+			    u16 ndm_state)
 {
 	struct net *net = dev_net(dev);
 	struct sk_buff *skb;
@@ -2611,7 +2613,7 @@ static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type)
 		goto errout;
 
 	err = nlmsg_populate_fdb_fill(skb, dev, addr, vid,
-				      0, 0, type, NTF_SELF, 0);
+				      0, 0, type, NTF_SELF, 0, ndm_state);
 	if (err < 0) {
 		kfree_skb(skb);
 		goto errout;
@@ -2746,7 +2748,8 @@ static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh)
 					       nlh->nlmsg_flags);
 
 		if (!err) {
-			rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH);
+			rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH,
+					ndm->ndm_state);
 			ndm->ndm_flags &= ~NTF_SELF;
 		}
 	}
@@ -2847,7 +2850,8 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh)
 			err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid);
 
 		if (!err) {
-			rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH);
+			rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH,
+					ndm->ndm_state);
 			ndm->ndm_flags &= ~NTF_SELF;
 		}
 	}
@@ -2875,7 +2879,7 @@ static int nlmsg_populate_fdb(struct sk_buff *skb,
 		err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, 0,
 					      portid, seq,
 					      RTM_NEWNEIGH, NTF_SELF,
-					      NLM_F_MULTI);
+					      NLM_F_MULTI, NUD_PERMANENT);
 		if (err < 0)
 			return err;
 skip:
@@ -2907,6 +2911,7 @@ int ndo_dflt_fdb_dump(struct sk_buff *skb,
 	nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc);
 out:
 	netif_addr_unlock_bh(dev);
+	cb->args[1] = err;
 	return idx;
 }
 EXPORT_SYMBOL(ndo_dflt_fdb_dump);
@@ -2940,6 +2945,7 @@ static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
 		ops = br_dev->netdev_ops;
 	}
 
+	cb->args[1] = 0;
 	for_each_netdev(net, dev) {
 		if (brport_idx && (dev->ifindex != brport_idx))
 			continue;
@@ -2967,12 +2973,16 @@ static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
 				idx = cops->ndo_fdb_dump(skb, cb, br_dev, dev,
 							 idx);
 		}
+		if (cb->args[1] == -EMSGSIZE)
+			break;
 
 		if (dev->netdev_ops->ndo_fdb_dump)
 			idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, NULL,
 							    idx);
 		else
 			idx = ndo_dflt_fdb_dump(skb, cb, dev, NULL, idx);
+		if (cb->args[1] == -EMSGSIZE)
+			break;
 
 		cops = NULL;
 	}
@@ -3347,7 +3357,7 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 {
 	struct net *net = sock_net(skb->sk);
 	rtnl_doit_func doit;
-	int sz_idx, kind;
+	int kind;
 	int family;
 	int type;
 	int err;
@@ -3363,7 +3373,6 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		return 0;
 
 	family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family;
-	sz_idx = type>>2;
 	kind = type&3;
 
 	if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN))
-- 
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