4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Stephen Suryaputra <ssuryaextr@xxxxxxxxx>
[ Upstream commit 2f17becfbea5e9a0529b51da7345783e96e69516 ]
Use the right device to determine if redirect should be sent especially
when using vrf. Same as well as when sending the redirect.
Signed-off-by: Stephen Suryaputra <ssuryaextr@xxxxxxxxx>
Acked-by: David Ahern <dsahern@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/ipv6/ip6_output.c | 3 ++-
net/ipv6/ndisc.c | 6 ++++++
2 files changed, 8 insertions(+), 1 deletion(-)
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -487,7 +487,8 @@ int ip6_forward(struct sk_buff *skb)
send redirects to source routed frames.
We don't send redirects to frames decapsulated from IPsec.
*/
- if (skb->dev == dst->dev && opt->srcrt == 0 && !skb_sec_path(skb)) {
+ if (IP6CB(skb)->iif == dst->dev->ifindex &&
+ opt->srcrt == 0 && !skb_sec_path(skb)) {
struct in6_addr *target = NULL;
struct inet_peer *peer;
struct rt6_info *rt;
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1538,6 +1538,12 @@ void ndisc_send_redirect(struct sk_buff
ops_data_buf[NDISC_OPS_REDIRECT_DATA_SPACE], *ops_data = NULL;
bool ret;
+ if (netif_is_l3_master(skb->dev)) {
+ dev = __dev_get_by_index(dev_net(skb->dev), IPCB(skb)->iif);
+ if (!dev)
+ return;
+ }
+
if (ipv6_get_lladdr(dev, &saddr_buf, IFA_F_TENTATIVE)) {
ND_PRINTK(2, warn, "Redirect: no link-local address on %s\n",
dev->name);
