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>

diff --git a/net/core/dev.c b/net/core/dev.c
index be7ee506f17aa9d0b2a8e6ce0bb6eb4bbdc3343f..c2442b46646eedd30561f607b47fa89964308d78 100644 (file)
--- 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;
        }