1 files changed, 15 insertions, 1 deletions

diff --git a/include/linux/if_pppol2tp.h b/include/linux/if_pppol2tp.h
index c58baea4a25b..184bc5566207 100644
--- a/include/linux/if_pppol2tp.h
+++ b/include/linux/if_pppol2tp.h
@@ -2,7 +2,7 @@
  * Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661)
  *
  * This file supplies definitions required by the PPP over L2TP driver
- * (pppol2tp.c).  All version information wrt this file is located in pppol2tp.c
+ * (l2tp_ppp.c).  All version information wrt this file is located in l2tp_ppp.c
  *
  * License:
  *              This program is free software; you can redistribute it and/or
@@ -35,6 +35,20 @@ struct pppol2tp_addr {
         __u16 d_tunnel, d_session;      /* For sending outgoing packets */
 };
 
+/* The L2TPv3 protocol changes tunnel and session ids from 16 to 32
+ * bits. So we need a different sockaddr structure.
+ */
+struct pppol2tpv3_addr {
+        pid_t   pid;                    /* pid that owns the fd.
+                                         * 0 => current */
+        int     fd;                     /* FD of UDP or IP socket to use */
+
+        struct sockaddr_in addr;        /* IP address and port to send to */
+
+        __u32 s_tunnel, s_session;      /* For matching incoming packets */
+        __u32 d_tunnel, d_session;      /* For sending outgoing packets */
+};
+
 /* Socket options:
  * DEBUG        - bitmask of debug message categories
  * SENDSEQ      - 0 => don't send packets with sequence numbers