[PPPOE]: Use ifindex instead of device pointer in key lookups.

Otherwise we can potentially try to dereference a NULL device
pointer in some cases.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/if_pppox.h b/include/linux/if_pppox.h
index 4fab3d0a4bce..e33ee763c052 100644
--- a/include/linux/if_pppox.h
+++ b/include/linux/if_pppox.h
@@ -114,6 +114,7 @@ struct pppoe_hdr {
 #ifdef __KERNEL__
 struct pppoe_opt {
         struct net_device      *dev;      /* device associated with socket*/
+        int                     ifindex;  /* ifindex of device associated with socket */
         struct pppoe_addr       pa;       /* what this socket is bound to*/
         struct sockaddr_pppox   relay;    /* what socket data will be
                                              relayed to (PPPoE relaying) */
@@ -132,6 +133,7 @@ struct pppox_sock {
         unsigned short          num;
 };
 #define pppoe_dev       proto.pppoe.dev
+#define pppoe_ifindex   proto.pppoe.ifindex
 #define pppoe_pa        proto.pppoe.pa
 #define pppoe_relay     proto.pppoe.relay