net: rps: fix the support for PPPOE

The upper protocol numbers of PPPOE are different, and should be treated
specially.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 1 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index bf49a47ddfdb..7f4486e127e9 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -135,6 +135,7 @@
 #include <linux/cpu_rmap.h>
 #include <linux/if_tunnel.h>
 #include <linux/if_pppox.h>
+#include <linux/ppp_defs.h>
 
 #include "net-sysfs.h"
 
@@ -2556,6 +2557,7 @@ void __skb_get_rxhash(struct sk_buff *skb)
 again:
         switch (proto) {
         case __constant_htons(ETH_P_IP):
+ip:
                 if (!pskb_may_pull(skb, sizeof(*ip) + nhoff))
                         goto done;
 
@@ -2569,6 +2571,7 @@ again:
                 nhoff += ip->ihl * 4;
                 break;
         case __constant_htons(ETH_P_IPV6):
+ipv6:
                 if (!pskb_may_pull(skb, sizeof(*ip6) + nhoff))
                         goto done;
 
@@ -2591,7 +2594,14 @@ again:
                 proto = *((__be16 *) (skb->data + nhoff +
                                       sizeof(struct pppoe_hdr)));
                 nhoff += PPPOE_SES_HLEN;
-                goto again;
+                switch (proto) {
+                case __constant_htons(PPP_IP):
+                        goto ip;
+                case __constant_htons(PPP_IPV6):
+                        goto ipv6;
+                default:
+                        goto done;
+                }
         default:
                 goto done;
         }