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

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

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Zumbiehl
2007-03-04 16:03:22 -08:00
committed by David S. Miller
parent bc5f774347
commit 6f30e1867c
2 changed files with 8 additions and 5 deletions
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2
include/linux/if_pppox.h
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@@ -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