net: rps: support PPPOE session messages

Inspect the payload of PPPOE session messages for the 4 tuples to generate
skb->rxhash.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index be7ee506f17a..c2442b46646e 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -134,6 +134,7 @@
 #include <linux/inetdevice.h>
 #include <linux/cpu_rmap.h>
 #include <linux/if_tunnel.h>
+#include <linux/if_pppox.h>
 
 #include "net-sysfs.h"
 
@@ -2573,6 +2574,13 @@ again:
                 proto = vlan->h_vlan_encapsulated_proto;
                 nhoff += sizeof(*vlan);
                 goto again;
+        case __constant_htons(ETH_P_PPP_SES):
+                if (!pskb_may_pull(skb, PPPOE_SES_HLEN + nhoff))
+                        goto done;
+                proto = *((__be16 *) (skb->data + nhoff +
+                                      sizeof(struct pppoe_hdr)));
+                nhoff += PPPOE_SES_HLEN;
+                goto again;
         default:
                 goto done;
         }