* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
- * $Id: if_ppp.h,v 1.4 1994/09/01 00:45:32 paulus Exp $
+ * $Id: if_ppp.h,v 1.5 1994/09/16 01:54:06 paulus Exp $
*/
#ifndef _IF_PPP_H_
#define PPP_HDRLEN 4 /* sizeof(struct ppp_header) must be 4 */
#define PPP_FCSLEN 2 /* octets for FCS */
+#define PPP_ADDRESS(p) (((u_char *)(p))[0])
+#define PPP_CONTROL(p) (((u_char *)(p))[1])
+#define PPP_PROTOCOL(p) ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
+
+/*
+ * Significant octet values.
+ */
#define PPP_ALLSTATIONS 0xff /* All-Stations broadcast address */
#define PPP_UI 0x03 /* Unnumbered Information */
#define PPP_FLAG 0x7e /* Flag Sequence */
/* Extended asyncmap - allows any character to be escaped. */
typedef u_long ext_accm[8];
+/*
+ * What to do with network protocol (NP) packets.
+ */
+enum NPmode {
+ NPMODE_PASS, /* pass the packet through */
+ NPMODE_DROP, /* silently drop the packet */
+ NPMODE_ERROR, /* return an error */
+ NPMODE_QUEUE /* save it up for later. */
+};
+
+/*
+ * Supported network protocols. These values are used for
+ * indexing sc_npmode.
+ */
+#define NP_IP 0 /* Internet Protocol */
+#define NUM_NP 1 /* Number of NPs. */
+
/*
* Structure describing each ppp unit.
*/
struct ppp_softc {
- struct ifnet sc_if; /* network-visible interface */
- u_int sc_flags; /* see below */
- void *sc_devp; /* pointer to device-dependent structure */
- int (*sc_start)(); /* start routine */
- short sc_mru; /* max receive unit */
- pid_t sc_xfer; /* used in xferring unit to another dev */
- struct ifqueue sc_inq; /* TTY side input queue */
- struct ifqueue sc_fastq; /* IP interactive output packet queue */
+ struct ifnet sc_if; /* network-visible interface */
+ u_int sc_flags; /* see below */
+ void *sc_devp; /* pointer to device-dep structure */
+ int (*sc_start)(); /* start routine */
+ short sc_mru; /* max receive unit */
+ pid_t sc_xfer; /* used in transferring unit */
+ struct ifqueue sc_inq; /* TTY side input queue */
+ struct ifqueue sc_fastq; /* IP interactive output packet q */
#ifdef VJC
- struct slcompress sc_comp; /* vjc control buffer */
+ struct slcompress sc_comp; /* vjc control buffer */
#endif
- u_int sc_bytessent; /* count of octets sent */
- u_int sc_bytesrcvd; /* count of octets received */
- caddr_t sc_bpf; /* hook for BPF */
+ u_int sc_bytessent; /* count of octets sent */
+ u_int sc_bytesrcvd; /* count of octets received */
+ caddr_t sc_bpf; /* hook for BPF */
+ enum NPmode sc_npmode[NUM_NP]; /* what to do with each NP */
struct compressor *sc_xcomp; /* transmit compressor */
- void *sc_xc_state; /* transmit compressor state */
+ void *sc_xc_state; /* transmit compressor state */
struct compressor *sc_rcomp; /* receive decompressor */
- void *sc_rc_state; /* receive decompressor state */
+ void *sc_rc_state; /* receive decompressor state */
/* Device-dependent part for async lines. */
- ext_accm sc_asyncmap; /* async control character map */
- u_long sc_rasyncmap; /* receive async control char map */
- struct mbuf *sc_outm; /* mbuf chain being output currently */
- struct mbuf *sc_m; /* pointer to input mbuf chain */
- struct mbuf *sc_mc; /* pointer to current input mbuf */
- char *sc_mp; /* pointer to next char in input mbuf */
- short sc_ilen; /* length of input-packet-so-far */
- u_short sc_fcs; /* FCS so far (input) */
- u_short sc_outfcs; /* FCS so far for output packet */
- u_char sc_rawin[16]; /* chars as received */
- int sc_rawin_count; /* # in sc_rawin */
+ ext_accm sc_asyncmap; /* async control character map */
+ u_long sc_rasyncmap; /* receive async control char map */
+ struct mbuf *sc_outm; /* mbuf chain currently being output */
+ struct mbuf *sc_m; /* pointer to input mbuf chain */
+ struct mbuf *sc_mc; /* pointer to current input mbuf */
+ char *sc_mp; /* ptr to next char in input mbuf */
+ short sc_ilen; /* length of input packet so far */
+ u_short sc_fcs; /* FCS so far (input) */
+ u_short sc_outfcs; /* FCS so far for output packet */
+ u_char sc_rawin[16]; /* chars as received */
+ int sc_rawin_count; /* # in sc_rawin */
};
/* flags */
#define SC_CCP_OPEN 0x00000040 /* Look at CCP packets */
#define SC_CCP_UP 0x00000080 /* May send/recv compressed packets */
#define SC_ENABLE_IP 0x00000100 /* IP packets may be exchanged */
-#define SC_XCOMP_RUN 0x00001000 /* compressor has been inited */
-#define SC_RCOMP_RUN 0x00002000 /* decompressor has been inited */
+#define SC_COMP_RUN 0x00001000 /* compressor has been inited */
+#define SC_DECOMP_RUN 0x00002000 /* decompressor has been inited */
#define SC_DEBUG 0x00010000 /* enable debug messages */
#define SC_LOG_INPKT 0x00020000 /* log contents of good pkts recvd */
#define SC_LOG_OUTPKT 0x00040000 /* log contents of pkts sent */
/* state bits */
#define SC_ESCAPED 0x80000000 /* saw a PPP_ESCAPE */
#define SC_FLUSH 0x40000000 /* flush input until next PPP_FLAG */
+#define SC_VJ_RESET 0x20000000 /* Need to reset the VJ decompressor */
#define SC_RCV_B7_0 0x01000000 /* have rcvd char with bit 7 = 0 */
#define SC_RCV_B7_1 0x02000000 /* have rcvd char with bit 7 = 1 */
#define SC_RCV_EVNP 0x04000000 /* have rcvd char with even parity */
#define SC_RCV_ODDP 0x08000000 /* have rcvd char with odd parity */
+#define SC_DC_ERROR 0x00400000 /* non-fatal decomp error detected */
+#define SC_DC_FERROR 0x00800000 /* fatal decomp error detected */
/*
- * What to do with network protocol (NP) packets.
+ * Ioctl definitions.
*/
-enum NPmode {
- NPMODE_PASS, /* pass the packet through */
- NPMODE_DROP, /* silently drop the packet */
- NPMODE_ERROR, /* return an error */
- NPMODE_QUEUE /* save it up for later. */
-};
-
struct npioctl {
int protocol; /* PPP procotol, e.g. PPP_IP */
enum NPmode mode;
#define ifr_mtu ifr_ifru.ifru_metric
#endif
-/* old copies of PPP may have defined this */
#if !defined(ifr_mtu)
#define ifr_mtu ifr_metric
#endif
projects / ppp.git / blobdiff