4951704b4e
The syncppp layer wants a mid-level netdev private pointer. It was using netdev->priv but that only worked by accident, and thus this scheme was broken when the device private allocation strategy changed. Add a proper mid-layer private pointer for uses like this, update syncppp and all users, and remove the HDLC_PPP broken tag from drivers/net/wan/Kconfig Signed-off-by: David S. Miller <davem@davemloft.net>
104 lines
3.4 KiB
C
104 lines
3.4 KiB
C
/*
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* Defines for synchronous PPP/Cisco link level subroutines.
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*
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* Copyright (C) 1994 Cronyx Ltd.
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* Author: Serge Vakulenko, <vak@zebub.msk.su>
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*
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* This software is distributed with NO WARRANTIES, not even the implied
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* warranties for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Authors grant any other persons or organizations permission to use
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* or modify this software as long as this message is kept with the software,
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* all derivative works or modified versions.
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*
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* Version 1.7, Wed Jun 7 22:12:02 MSD 1995
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*
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*
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*
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*/
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#ifndef _SYNCPPP_H_
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#define _SYNCPPP_H_ 1
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#ifdef __KERNEL__
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struct slcp {
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u16 state; /* state machine */
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u32 magic; /* local magic number */
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u_char echoid; /* id of last keepalive echo request */
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u_char confid; /* id of last configuration request */
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};
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struct sipcp {
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u16 state; /* state machine */
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u_char confid; /* id of last configuration request */
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};
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struct sppp
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{
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struct sppp * pp_next; /* next interface in keepalive list */
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u32 pp_flags; /* use Cisco protocol instead of PPP */
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u16 pp_alivecnt; /* keepalive packets counter */
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u16 pp_loopcnt; /* loopback detection counter */
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u32 pp_seq; /* local sequence number */
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u32 pp_rseq; /* remote sequence number */
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struct slcp lcp; /* LCP params */
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struct sipcp ipcp; /* IPCP params */
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u32 ibytes,obytes; /* Bytes in/out */
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u32 ipkts,opkts; /* Packets in/out */
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struct timer_list pp_timer;
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struct net_device *pp_if;
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char pp_link_state; /* Link status */
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spinlock_t lock;
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};
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struct ppp_device
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{
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struct net_device *dev; /* Network device pointer */
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struct sppp sppp; /* Synchronous PPP */
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};
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static inline struct sppp *sppp_of(struct net_device *dev)
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{
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struct ppp_device **ppp = dev->ml_priv;
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BUG_ON((*ppp)->dev != dev);
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return &(*ppp)->sppp;
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}
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#define PP_KEEPALIVE 0x01 /* use keepalive protocol */
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#define PP_CISCO 0x02 /* use Cisco protocol instead of PPP */
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#define PP_TIMO 0x04 /* cp_timeout routine active */
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#define PP_DEBUG 0x08
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#define PPP_MTU 1500 /* max. transmit unit */
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#define LCP_STATE_CLOSED 0 /* LCP state: closed (conf-req sent) */
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#define LCP_STATE_ACK_RCVD 1 /* LCP state: conf-ack received */
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#define LCP_STATE_ACK_SENT 2 /* LCP state: conf-ack sent */
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#define LCP_STATE_OPENED 3 /* LCP state: opened */
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#define IPCP_STATE_CLOSED 0 /* IPCP state: closed (conf-req sent) */
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#define IPCP_STATE_ACK_RCVD 1 /* IPCP state: conf-ack received */
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#define IPCP_STATE_ACK_SENT 2 /* IPCP state: conf-ack sent */
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#define IPCP_STATE_OPENED 3 /* IPCP state: opened */
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#define SPPP_LINK_DOWN 0 /* link down - no keepalive */
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#define SPPP_LINK_UP 1 /* link is up - keepalive ok */
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void sppp_attach (struct ppp_device *pd);
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void sppp_detach (struct net_device *dev);
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int sppp_do_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd);
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struct sk_buff *sppp_dequeue (struct net_device *dev);
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int sppp_isempty (struct net_device *dev);
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void sppp_flush (struct net_device *dev);
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int sppp_open (struct net_device *dev);
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int sppp_reopen (struct net_device *dev);
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int sppp_close (struct net_device *dev);
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#endif
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#define SPPPIOCCISCO (SIOCDEVPRIVATE)
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#define SPPPIOCPPP (SIOCDEVPRIVATE+1)
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#define SPPPIOCDEBUG (SIOCDEVPRIVATE+2)
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#define SPPPIOCSFLAGS (SIOCDEVPRIVATE+3)
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#define SPPPIOCGFLAGS (SIOCDEVPRIVATE+4)
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#endif /* _SYNCPPP_H_ */
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