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-rw-r--r--include/net/syncppp.h105
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diff --git a/include/net/syncppp.h b/include/net/syncppp.h
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+/*
+ * Defines for synchronous PPP/Cisco link level subroutines.
+ *
+ * Copyright (C) 1994 Cronyx Ltd.
+ * Author: Serge Vakulenko, <vak@zebub.msk.su>
+ *
+ * This software is distributed with NO WARRANTIES, not even the implied
+ * warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Authors grant any other persons or organizations permission to use
+ * or modify this software as long as this message is kept with the software,
+ * all derivative works or modified versions.
+ *
+ * Version 1.7, Wed Jun 7 22:12:02 MSD 1995
+ *
+ *
+ *
+ */
+
+#ifndef _SYNCPPP_H_
+#define _SYNCPPP_H_ 1
+
+#ifdef __KERNEL__
+struct slcp {
+ u16 state; /* state machine */
+ u32 magic; /* local magic number */
+ u_char echoid; /* id of last keepalive echo request */
+ u_char confid; /* id of last configuration request */
+};
+
+struct sipcp {
+ u16 state; /* state machine */
+ u_char confid; /* id of last configuration request */
+};
+
+struct sppp
+{
+ struct sppp * pp_next; /* next interface in keepalive list */
+ u32 pp_flags; /* use Cisco protocol instead of PPP */
+ u16 pp_alivecnt; /* keepalive packets counter */
+ u16 pp_loopcnt; /* loopback detection counter */
+ u32 pp_seq; /* local sequence number */
+ u32 pp_rseq; /* remote sequence number */
+ struct slcp lcp; /* LCP params */
+ struct sipcp ipcp; /* IPCP params */
+ u32 ibytes,obytes; /* Bytes in/out */
+ u32 ipkts,opkts; /* Packets in/out */
+ struct timer_list pp_timer;
+ struct net_device *pp_if;
+ char pp_link_state; /* Link status */
+ spinlock_t lock;
+};
+
+struct ppp_device
+{
+ struct net_device *dev; /* Network device pointer */
+ struct sppp sppp; /* Synchronous PPP */
+};
+
+static inline struct sppp *sppp_of(struct net_device *dev)
+{
+ struct ppp_device **ppp = dev->priv;
+ BUG_ON((*ppp)->dev != dev);
+ return &(*ppp)->sppp;
+}
+
+#define PP_KEEPALIVE 0x01 /* use keepalive protocol */
+#define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */
+#define PP_TIMO 0x04 /* cp_timeout routine active */
+#define PP_DEBUG 0x08
+
+#define PPP_MTU 1500 /* max. transmit unit */
+
+#define LCP_STATE_CLOSED 0 /* LCP state: closed (conf-req sent) */
+#define LCP_STATE_ACK_RCVD 1 /* LCP state: conf-ack received */
+#define LCP_STATE_ACK_SENT 2 /* LCP state: conf-ack sent */
+#define LCP_STATE_OPENED 3 /* LCP state: opened */
+
+#define IPCP_STATE_CLOSED 0 /* IPCP state: closed (conf-req sent) */
+#define IPCP_STATE_ACK_RCVD 1 /* IPCP state: conf-ack received */
+#define IPCP_STATE_ACK_SENT 2 /* IPCP state: conf-ack sent */
+#define IPCP_STATE_OPENED 3 /* IPCP state: opened */
+
+#define SPPP_LINK_DOWN 0 /* link down - no keepalive */
+#define SPPP_LINK_UP 1 /* link is up - keepalive ok */
+
+void sppp_attach (struct ppp_device *pd);
+void sppp_detach (struct net_device *dev);
+void sppp_input (struct net_device *dev, struct sk_buff *m);
+int sppp_do_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd);
+struct sk_buff *sppp_dequeue (struct net_device *dev);
+int sppp_isempty (struct net_device *dev);
+void sppp_flush (struct net_device *dev);
+int sppp_open (struct net_device *dev);
+int sppp_reopen (struct net_device *dev);
+int sppp_close (struct net_device *dev);
+#endif
+
+#define SPPPIOCCISCO (SIOCDEVPRIVATE)
+#define SPPPIOCPPP (SIOCDEVPRIVATE+1)
+#define SPPPIOCDEBUG (SIOCDEVPRIVATE+2)
+#define SPPPIOCSFLAGS (SIOCDEVPRIVATE+3)
+#define SPPPIOCGFLAGS (SIOCDEVPRIVATE+4)
+
+#endif /* _SYNCPPP_H_ */