Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 240 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/linux/isdn_ppp.h b/pfinet/linux-src/include/linux/isdn_ppp.h
new file mode 100644
index 00000000..a62101d0
--- /dev/null
+++ b/pfinet/linux-src/include/linux/isdn_ppp.h
@@ -0,0 +1,240 @@
+/* -*- mode: c; c-basic-offset: 2 -*- */
+
+#ifndef _LINUX_ISDN_PPP_H
+#define _LINUX_ISDN_PPP_H
+
+#include <linux/isdn_compat.h>
+
+#define CALLTYPE_INCOMING 0x1
+#define CALLTYPE_OUTGOING 0x2
+#define CALLTYPE_CALLBACK 0x4
+
+#define IPPP_VERSION    "2.2.0"
+
+struct pppcallinfo
+{
+  int calltype;
+  unsigned char local_num[64];
+  unsigned char remote_num[64];
+  int charge_units;
+};
+
+#define PPPIOCGCALLINFO _IOWR('t',128,struct pppcallinfo)
+#define PPPIOCBUNDLE   _IOW('t',129,int)
+#define PPPIOCGMPFLAGS _IOR('t',130,int)
+#define PPPIOCSMPFLAGS _IOW('t',131,int)
+#define PPPIOCSMPMTU   _IOW('t',132,int)
+#define PPPIOCSMPMRU   _IOW('t',133,int)
+#define PPPIOCGCOMPRESSORS _IOR('t',134,unsigned long [8])
+#define PPPIOCSCOMPRESSOR _IOW('t',135,int)
+#define PPPIOCGIFNAME      _IOR('t',136, char [IFNAMSIZ] )
+
+#define PPP_MP          0x003d
+#define PPP_LINK_COMP   0x00fb
+#define PPP_LINK_CCP    0x80fb
+
+#define SC_MP_PROT       0x00000200
+#define SC_REJ_MP_PROT   0x00000400
+#define SC_OUT_SHORT_SEQ 0x00000800
+#define SC_IN_SHORT_SEQ  0x00004000
+
+#define SC_DECOMP_ON		0x01
+#define SC_COMP_ON		0x02
+#define SC_DECOMP_DISCARD	0x04
+#define SC_COMP_DISCARD		0x08
+#define SC_LINK_DECOMP_ON	0x10
+#define SC_LINK_COMP_ON		0x20
+#define SC_LINK_DECOMP_DISCARD	0x40
+#define SC_LINK_COMP_DISCARD	0x80
+
+#define DECOMP_ERR_NOMEM	(-10)
+
+#define MP_END_FRAG    0x40
+#define MP_BEGIN_FRAG  0x80
+
+#define ISDN_PPP_COMP_MAX_OPTIONS 16
+
+#define IPPP_COMP_FLAG_XMIT 0x1
+#define IPPP_COMP_FLAG_LINK 0x2
+
+struct isdn_ppp_comp_data {
+  int num;
+  unsigned char options[ISDN_PPP_COMP_MAX_OPTIONS];
+  int optlen;
+  int flags;
+};
+
+#ifdef __KERNEL__
+
+/*
+ * We need a way for the decompressor to influence the generation of CCP
+ * Reset-Requests in a variety of ways. The decompressor is already returning
+ * a lot of information (generated skb length, error conditions) so we use
+ * another parameter. This parameter is a pointer to a structure which is
+ * to be marked valid by the decompressor and only in this case is ever used.
+ * Furthermore, the only case where this data is used is when the decom-
+ * pressor returns DECOMP_ERROR.
+ *
+ * We use this same struct for the reset entry of the compressor to commu-
+ * nicate to its caller how to deal with sending of a Reset Ack. In this
+ * case, expra is not used, but other options still apply (supressing
+ * sending with rsend, appending arbitrary data, etc).
+ */
+
+#define IPPP_RESET_MAXDATABYTES	32
+
+struct isdn_ppp_resetparams {
+  unsigned char valid:1;	/* rw Is this structure filled at all ? */
+  unsigned char rsend:1;	/* rw Should we send one at all ? */
+  unsigned char idval:1;	/* rw Is the id field valid ? */
+  unsigned char dtval:1;	/* rw Is the data field valid ? */
+  unsigned char expra:1;	/* rw Is an Ack expected for this Req ? */
+  unsigned char id;		/* wo Send CCP ResetReq with this id */
+  unsigned short maxdlen;	/* ro Max bytes to be stored in data field */
+  unsigned short dlen;		/* rw Bytes stored in data field */
+  unsigned char *data;		/* wo Data for ResetReq info field */
+};
+
+/*
+ * this is an 'old friend' from ppp-comp.h under a new name 
+ * check the original include for more information
+ */
+struct isdn_ppp_compressor {
+  struct isdn_ppp_compressor *next, *prev;
+  int num; /* CCP compression protocol number */
+  
+  void *(*alloc) (struct isdn_ppp_comp_data *);
+  void (*free) (void *state);
+  int  (*init) (void *state, struct isdn_ppp_comp_data *,
+		int unit,int debug);
+  
+  /* The reset entry needs to get more exact information about the
+     ResetReq or ResetAck it was called with. The parameters are
+     obvious. If reset is called without a Req or Ack frame which
+     could be handed into it, code MUST be set to 0. Using rsparm,
+     the reset entry can control if and how a ResetAck is returned. */
+  
+  void (*reset) (void *state, unsigned char code, unsigned char id,
+		 unsigned char *data, unsigned len,
+		 struct isdn_ppp_resetparams *rsparm);
+  
+  int  (*compress) (void *state, struct sk_buff *in,
+		    struct sk_buff *skb_out, int proto);
+  
+	int  (*decompress) (void *state,struct sk_buff *in,
+			    struct sk_buff *skb_out,
+			    struct isdn_ppp_resetparams *rsparm);
+  
+  void (*incomp) (void *state, struct sk_buff *in,int proto);
+  void (*stat) (void *state, struct compstat *stats);
+};
+
+extern int isdn_ppp_register_compressor(struct isdn_ppp_compressor *);
+extern int isdn_ppp_unregister_compressor(struct isdn_ppp_compressor *);
+extern int isdn_ppp_dial_slave(char *);
+extern int isdn_ppp_hangup_slave(char *);
+
+struct ippp_bundle {
+  int mp_mrru;                        /* unused                             */
+  struct mpqueue *last;               /* currently defined in isdn_net_dev  */
+  int min;                            /* currently calculated 'on the fly'  */
+  long next_num;                      /* we wanna see this seq.-number next */
+  struct sqqueue *sq;
+  int modify:1;                       /* set to 1 while modifying sqqueue   */
+  int bundled:1;                      /* bundle active ?                    */
+};
+
+#define NUM_RCV_BUFFS     64
+
+struct sqqueue {
+  struct sqqueue *next;
+  long sqno_start;
+  long sqno_end;
+  struct sk_buff *skb;
+  long timer;
+};
+
+struct mpqueue {
+  struct mpqueue *next;
+  struct mpqueue *last;
+  long sqno;
+  struct sk_buff *skb;
+  int BEbyte;
+  unsigned long time;
+};
+
+struct ippp_buf_queue {
+  struct ippp_buf_queue *next;
+  struct ippp_buf_queue *last;
+  char *buf;                 /* NULL here indicates end of queue */
+  int len;
+};
+
+/* The data structure for one CCP reset transaction */
+enum ippp_ccp_reset_states {
+  CCPResetIdle,
+  CCPResetSentReq,
+  CCPResetRcvdReq,
+  CCPResetSentAck,
+  CCPResetRcvdAck
+};
+
+struct ippp_ccp_reset_state {
+  enum ippp_ccp_reset_states state;	/* State of this transaction */
+  struct ippp_struct *is;		/* Backlink to device stuff */
+  unsigned char id;			/* Backlink id index */
+  unsigned char ta:1;			/* The timer is active (flag) */
+  unsigned char expra:1;		/* We expect a ResetAck at all */
+  int dlen;				/* Databytes stored in data */
+  struct timer_list timer;		/* For timeouts/retries */
+  /* This is a hack but seems sufficient for the moment. We do not want
+     to have this be yet another allocation for some bytes, it is more
+     memory management overhead than the whole mess is worth. */
+  unsigned char data[IPPP_RESET_MAXDATABYTES];
+};
+
+/* The data structure keeping track of the currently outstanding CCP Reset
+   transactions. */
+struct ippp_ccp_reset {
+  struct ippp_ccp_reset_state *rs[256];	/* One per possible id */
+  unsigned char lastid;			/* Last id allocated by the engine */
+};
+
+struct ippp_struct {
+  struct ippp_struct *next_link;
+  int state;
+  struct ippp_buf_queue rq[NUM_RCV_BUFFS]; /* packet queue for isdn_ppp_read() */
+  struct ippp_buf_queue *first;  /* pointer to (current) first packet */
+  struct ippp_buf_queue *last;   /* pointer to (current) last used packet in queue */
+#ifdef COMPAT_HAS_NEW_WAITQ
+  wait_queue_head_t wq;
+#else
+  struct wait_queue *wq;
+#endif
+  struct task_struct *tk;
+  unsigned int mpppcfg;
+  unsigned int pppcfg;
+  unsigned int mru;
+  unsigned int mpmru;
+  unsigned int mpmtu;
+  unsigned int maxcid;
+  struct isdn_net_local_s *lp;
+  int unit;
+  int minor;
+  long last_link_seqno;
+  long mp_seqno;
+  long range;
+#ifdef CONFIG_ISDN_PPP_VJ
+  unsigned char *cbuf;
+  struct slcompress *slcomp;
+#endif
+  unsigned long debug;
+  struct isdn_ppp_compressor *compressor,*decompressor;
+  struct isdn_ppp_compressor *link_compressor,*link_decompressor;
+  void *decomp_stat,*comp_stat,*link_decomp_stat,*link_comp_stat;
+  struct ippp_ccp_reset *reset;	/* Allocated on demand, may never be needed */
+  unsigned long compflags;
+};
+
+#endif /* __KERNEL__ */
+#endif /* _LINUX_ISDN_PPP_H */