IB/rxe: Add dst_clone() in prepare_ipv6_hdr()

Otherwise the reference count goes negative as IPv6 packets complete.

Fixes: 4ed6ad1eb30e ("IB/rxe: Cache dst in QP instead of getting it...")
Signed-off-by: Andrew Boyer <andrew.boyer@dell.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/sw/rxe/rxe_net.c b/drivers/infiniband/sw/rxe/rxe_net.c
index a93ae3a..3fbbadc 100644 (file)
--- a/drivers/infiniband/sw/rxe/rxe_net.c
+++ b/drivers/infiniband/sw/rxe/rxe_net.c
@@ -342,7 +342,7 @@ static void prepare_ipv6_hdr(struct dst_entry *dst, struct sk_buff *skb,
        memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
        IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED
                            | IPSKB_REROUTED);
-       skb_dst_set(skb, dst);
+       skb_dst_set(skb, dst_clone(dst));
 
        __skb_push(skb, sizeof(*ip6h));
        skb_reset_network_header(skb);