[PATCH] sched: reduce task_struct size

[safe/jmp/linux-2.6] / include / linux / if_pppox.h

diff --git a/include/linux/if_pppox.h b/include/linux/if_pppox.h
index e33ee76..2565254 100644 (file)
--- a/include/linux/if_pppox.h
+++ b/include/linux/if_pppox.h
@@ -27,6 +27,7 @@
 #include <asm/semaphore.h>
 #include <linux/ppp_channel.h>
 #endif /* __KERNEL__ */
+#include <linux/if_pppol2tp.h>
 
 /* For user-space programs to pick up these definitions
  * which they wouldn't get otherwise without defining __KERNEL__
@@ -50,8 +51,9 @@ struct pppoe_addr{
  * Protocols supported by AF_PPPOX 
  */ 
 #define PX_PROTO_OE    0 /* Currently just PPPoE */
-#define PX_MAX_PROTO   1       
- 
+#define PX_PROTO_OL2TP 1 /* Now L2TP also */
+#define PX_MAX_PROTO   2
+
 struct sockaddr_pppox { 
        sa_family_t     sa_family;            /* address family, AF_PPPOX */ 
        unsigned int    sa_protocol;          /* protocol identifier */ 
@@ -60,6 +62,16 @@ struct sockaddr_pppox {
        }sa_addr; 
 }__attribute__ ((packed)); 
 
+/* The use of the above union isn't viable because the size of this
+ * struct must stay fixed over time -- applications use sizeof(struct
+ * sockaddr_pppox) to fill it. We use a protocol specific sockaddr
+ * type instead.
+ */
+struct sockaddr_pppol2tp {
+       sa_family_t     sa_family;      /* address family, AF_PPPOX */
+       unsigned int    sa_protocol;    /* protocol identifier */
+       struct pppol2tp_addr pppol2tp;
+}__attribute__ ((packed));
 
 /*********************************************************************
  *
@@ -111,7 +123,17 @@ struct pppoe_hdr {
        struct pppoe_tag tag[0];
 } __attribute__ ((packed));
 
+/* Length of entire PPPoE + PPP header */
+#define PPPOE_SES_HLEN 8
+
 #ifdef __KERNEL__
+#include <linux/skbuff.h>
+
+static inline struct pppoe_hdr *pppoe_hdr(const struct sk_buff *skb)
+{
+       return (struct pppoe_hdr *)skb_network_header(skb);
+}
+
 struct pppoe_opt {
        struct net_device      *dev;      /* device associated with socket*/
        int                     ifindex;  /* ifindex of device associated with socket */