[PATCH v2] netns: fix proxy ARP entries listing on a netns

["Jorge Boncompte [DTI2]" <jorge@dti2.net>]

From: "Jorge Boncompte [DTI2]" <jorge@dti2.net>

Skip entries from foreign network namespaces.

V2:
    Fixed as suggested by David Miller to avoid a goto.

Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
---
 net/core/neighbour.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 2684794..27d3fef 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -2414,7 +2414,10 @@ static struct pneigh_entry *pneigh_get_next(struct seq_file *seq,
 	struct net *net = seq_file_net(seq);
 	struct neigh_table *tbl = state->tbl;
 
-	pn = pn->next;
+	do {
+		pn = pn->next;
+	} while (pn && !net_eq(pneigh_net(pn), net));
+
 	while (!pn) {
 		if (++state->bucket > PNEIGH_HASHMASK)
 			break;
-- 
1.7.7.1