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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [drivers/] [isdn/] [hisax/] [q931.c] - Rev 1772
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/* $Id: q931.c,v 1.1 2005-12-20 10:17:01 jcastillo Exp $ * q931.c code to decode ITU Q.931 call control messages * * Author Jan den Ouden * * Changelog * * Pauline Middelink general improvements * * Beat Doebeli cause texts, display information element * * Karsten Keil cause texts, display information element for 1TR6 * * * $Log: not supported by cvs2svn $ * Revision 1.1.1.1 2001/09/10 07:44:18 simons * Initial import * * Revision 1.1.1.1 2001/07/02 17:58:32 simons * Initial revision * * Revision 1.5.2.3 1998/11/03 00:07:28 keil * certification related changes * fixed logging for smaller stack use * * Revision 1.5.2.2 1998/10/25 18:16:32 fritz * Replaced some read-only variables by defines. * * Revision 1.5.2.1 1997/10/17 22:14:20 keil * update to last hisax version * * Revision 1.6 1997/07/27 21:09:44 keil * move functions to isdnl3.c * * Revision 1.5 1997/04/06 22:56:43 keil * Some cosmetic changes * * Revision 1.4 1997/02/09 00:29:11 keil * new interface handling, one interface per card * * Revision 1.3 1997/01/21 22:24:59 keil * cleanups * * Revision 1.2 1996/10/27 22:12:45 keil * reporting unknown level 3 protocol ids * * Revision 1.1 1996/10/13 20:04:56 keil * Initial revision * * */ #define __NO_VERSION__ #include "hisax.h" #include "l3_1tr6.h" void iecpy(u_char * dest, u_char * iestart, int ieoffset) { u_char *p; int l; p = iestart + ieoffset + 2; l = iestart[1] - ieoffset; while (l--) *dest++ = *p++; *dest++ = '\0'; } /* * According to Table 4-2/Q.931 */ static struct MessageType { u_char nr; char *descr; } mtlist[] = { { 0x1, "ALERTING" }, { 0x2, "CALL PROCEEDING" }, { 0x7, "CONNECT" }, { 0xf, "CONNECT ACKNOWLEDGE" }, { 0x3, "PROGRESS" }, { 0x5, "SETUP" }, { 0xd, "SETUP ACKNOWLEDGE" }, { 0x26, "RESUME" }, { 0x2e, "RESUME ACKNOWLEDGE" }, { 0x22, "RESUME REJECT" }, { 0x25, "SUSPEND" }, { 0x2d, "SUSPEND ACKNOWLEDGE" }, { 0x21, "SUSPEND REJECT" }, { 0x20, "USER INFORMATION" }, { 0x45, "DISCONNECT" }, { 0x4d, "RELEASE" }, { 0x5a, "RELEASE COMPLETE" }, { 0x46, "RESTART" }, { 0x4e, "RESTART ACKNOWLEDGE" }, { 0x60, "SEGMENT" }, { 0x79, "CONGESTION CONTROL" }, { 0x7b, "INFORMATION" }, { 0x62, "FACILITY" }, { 0x6e, "NOTIFY" }, { 0x7d, "STATUS" }, { 0x75, "STATUS ENQUIRY" } }; #define MTSIZE sizeof(mtlist)/sizeof(struct MessageType) static struct MessageType mt_n0[] = { {MT_N0_REG_IND, "REGister INDication"}, {MT_N0_CANC_IND, "CANCel INDication"}, {MT_N0_FAC_STA, "FACility STAtus"}, {MT_N0_STA_ACK, "STAtus ACKnowledge"}, {MT_N0_STA_REJ, "STAtus REJect"}, {MT_N0_FAC_INF, "FACility INFormation"}, {MT_N0_INF_ACK, "INFormation ACKnowledge"}, {MT_N0_INF_REJ, "INFormation REJect"}, {MT_N0_CLOSE, "CLOSE"}, {MT_N0_CLO_ACK, "CLOse ACKnowledge"} }; #define MT_N0_LEN (sizeof(mt_n0) / sizeof(struct MessageType)) static struct MessageType mt_n1[] = { {MT_N1_ESC, "ESCape"}, {MT_N1_ALERT, "ALERT"}, {MT_N1_CALL_SENT, "CALL SENT"}, {MT_N1_CONN, "CONNect"}, {MT_N1_CONN_ACK, "CONNect ACKnowledge"}, {MT_N1_SETUP, "SETUP"}, {MT_N1_SETUP_ACK, "SETUP ACKnowledge"}, {MT_N1_RES, "RESume"}, {MT_N1_RES_ACK, "RESume ACKnowledge"}, {MT_N1_RES_REJ, "RESume REJect"}, {MT_N1_SUSP, "SUSPend"}, {MT_N1_SUSP_ACK, "SUSPend ACKnowledge"}, {MT_N1_SUSP_REJ, "SUSPend REJect"}, {MT_N1_USER_INFO, "USER INFO"}, {MT_N1_DET, "DETach"}, {MT_N1_DISC, "DISConnect"}, {MT_N1_REL, "RELease"}, {MT_N1_REL_ACK, "RELease ACKnowledge"}, {MT_N1_CANC_ACK, "CANCel ACKnowledge"}, {MT_N1_CANC_REJ, "CANCel REJect"}, {MT_N1_CON_CON, "CONgestion CONtrol"}, {MT_N1_FAC, "FACility"}, {MT_N1_FAC_ACK, "FACility ACKnowledge"}, {MT_N1_FAC_CAN, "FACility CANcel"}, {MT_N1_FAC_REG, "FACility REGister"}, {MT_N1_FAC_REJ, "FACility REJect"}, {MT_N1_INFO, "INFOrmation"}, {MT_N1_REG_ACK, "REGister ACKnowledge"}, {MT_N1_REG_REJ, "REGister REJect"}, {MT_N1_STAT, "STATus"} }; #define MT_N1_LEN (sizeof(mt_n1) / sizeof(struct MessageType)) static struct MessageType fac_1tr6[] = { {FAC_Sperre, "Sperre"}, {FAC_Forward1, "Forward 1"}, {FAC_Forward2, "Forward 2"}, {FAC_Konferenz, "Konferenz"}, {FAC_GrabBchan, "Grab Bchannel"}, {FAC_Reactivate, "Reactivate"}, {FAC_Konferenz3, "Dreier Konferenz"}, {FAC_Dienstwechsel1, "Einseitiger Dienstwechsel"}, {FAC_Dienstwechsel2, "Zweiseitiger Dienstwechsel"}, {FAC_NummernIdent, "Rufnummer-Identifizierung"}, {FAC_GBG, "GBG"}, {FAC_DisplayUebergeben, "Display Uebergeben"}, {FAC_DisplayUmgeleitet, "Display Umgeleitet"}, {FAC_Unterdruecke, "Unterdruecke Rufnummer"}, {FAC_Deactivate, "Deactivate"}, {FAC_Activate, "Activate"}, {FAC_SPV, "SPV"}, {FAC_Rueckwechsel, "Rueckwechsel"}, {FAC_Umleitung, "Umleitung"} }; #define FAC_1TR6_LEN (sizeof(fac_1tr6) / sizeof(struct MessageType)) static int prbits(char *dest, u_char b, int start, int len) { char *dp = dest; b = b << (8 - start); while (len--) { if (b & 0x80) *dp++ = '1'; else *dp++ = '0'; b = b << 1; } return (dp - dest); } static u_char * skipext(u_char * p) { while (!(*p++ & 0x80)); return (p); } /* * Cause Values According to Q.850 * edescr: English description * ddescr: German description used by Swissnet II (Swiss Telecom * not yet written... */ static struct CauseValue { u_char nr; char *edescr; char *ddescr; } cvlist[] = { { 0x01, "Unallocated (unassigned) number", "Nummer nicht zugeteilt" }, { 0x02, "No route to specified transit network", "" }, { 0x03, "No route to destination", "" }, { 0x04, "Send special information tone", "" }, { 0x05, "Misdialled trunk prefix", "" }, { 0x06, "Channel unacceptable", "Kanal nicht akzeptierbar" }, { 0x07, "Channel awarded and being delivered in an established channel", "" }, { 0x08, "Preemption", "" }, { 0x09, "Preemption - circuit reserved for reuse", "" }, { 0x10, "Normal call clearing", "Normale Ausloesung" }, { 0x11, "User busy", "TNB besetzt" }, { 0x12, "No user responding", "" }, { 0x13, "No answer from user (user alerted)", "" }, { 0x14, "Subscriber absent", "" }, { 0x15, "Call rejected", "" }, { 0x16, "Number changed", "" }, { 0x1a, "non-selected user clearing", "" }, { 0x1b, "Destination out of order", "" }, { 0x1c, "Invalid number format (address incomplete)", "" }, { 0x1d, "Facility rejected", "" }, { 0x1e, "Response to Status enquiry", "" }, { 0x1f, "Normal, unspecified", "" }, { 0x22, "No circuit/channel available", "" }, { 0x26, "Network out of order", "" }, { 0x27, "Permanent frame mode connection out-of-service", "" }, { 0x28, "Permanent frame mode connection operational", "" }, { 0x29, "Temporary failure", "" }, { 0x2a, "Switching equipment congestion", "" }, { 0x2b, "Access information discarded", "" }, { 0x2c, "Requested circuit/channel not available", "" }, { 0x2e, "Precedence call blocked", "" }, { 0x2f, "Resource unavailable, unspecified", "" }, { 0x31, "Quality of service unavailable", "" }, { 0x32, "Requested facility not subscribed", "" }, { 0x35, "Outgoing calls barred within CUG", "" }, { 0x37, "Incoming calls barred within CUG", "" }, { 0x39, "Bearer capability not authorized", "" }, { 0x3a, "Bearer capability not presently available", "" }, { 0x3e, "Inconsistency in designated outgoing access information and subscriber class ", " " }, { 0x3f, "Service or option not available, unspecified", "" }, { 0x41, "Bearer capability not implemented", "" }, { 0x42, "Channel type not implemented", "" }, { 0x43, "Requested facility not implemented", "" }, { 0x44, "Only restricted digital information bearer capability is available", "" }, { 0x4f, "Service or option not implemented", "" }, { 0x51, "Invalid call reference value", "" }, { 0x52, "Identified channel does not exist", "" }, { 0x53, "A suspended call exists, but this call identity does not", "" }, { 0x54, "Call identity in use", "" }, { 0x55, "No call suspended", "" }, { 0x56, "Call having the requested call identity has been cleared", "" }, { 0x57, "User not member of CUG", "" }, { 0x58, "Incompatible destination", "" }, { 0x5a, "Non-existent CUG", "" }, { 0x5b, "Invalid transit network selection", "" }, { 0x5f, "Invalid message, unspecified", "" }, { 0x60, "Mandatory information element is missing", "" }, { 0x61, "Message type non-existent or not implemented", "" }, { 0x62, "Message not compatible with call state or message type non-existent or not implemented ", " " }, { 0x63, "Information element/parameter non-existent or not implemented", "" }, { 0x64, "Invalid information element contents", "" }, { 0x65, "Message not compatible with call state", "" }, { 0x66, "Recovery on timer expiry", "" }, { 0x67, "Parameter non-existent or not implemented - passed on", "" }, { 0x6e, "Message with unrecognized parameter discarded", "" }, { 0x6f, "Protocol error, unspecified", "" }, { 0x7f, "Interworking, unspecified", "" }, }; #define CVSIZE sizeof(cvlist)/sizeof(struct CauseValue) static int prcause(char *dest, u_char * p) { u_char *end; char *dp = dest; int i, cause; end = p + p[1] + 1; p += 2; dp += sprintf(dp, " coding "); dp += prbits(dp, *p, 7, 2); dp += sprintf(dp, " location "); dp += prbits(dp, *p, 4, 4); *dp++ = '\n'; p = skipext(p); cause = 0x7f & *p++; /* locate cause value */ for (i = 0; i < CVSIZE; i++) if (cvlist[i].nr == cause) break; /* display cause value if it exists */ if (i == CVSIZE) dp += sprintf(dp, "Unknown cause type %x!\n", cause); else dp += sprintf(dp, " cause value %x : %s \n", cause, cvlist[i].edescr); while (!0) { if (p > end) break; dp += sprintf(dp, " diag attribute %d ", *p++ & 0x7f); dp += sprintf(dp, " rej %d ", *p & 0x7f); if (*p & 0x80) { *dp++ = '\n'; break; } else dp += sprintf(dp, " av %d\n", (*++p) & 0x7f); } return (dp - dest); } static struct MessageType cause_1tr6[] = { {CAUSE_InvCRef, "Invalid Call Reference"}, {CAUSE_BearerNotImpl, "Bearer Service Not Implemented"}, {CAUSE_CIDunknown, "Caller Identity unknown"}, {CAUSE_CIDinUse, "Caller Identity in Use"}, {CAUSE_NoChans, "No Channels available"}, {CAUSE_FacNotImpl, "Facility Not Implemented"}, {CAUSE_FacNotSubscr, "Facility Not Subscribed"}, {CAUSE_OutgoingBarred, "Outgoing calls barred"}, {CAUSE_UserAccessBusy, "User Access Busy"}, {CAUSE_NegativeGBG, "Negative GBG"}, {CAUSE_UnknownGBG, "Unknown GBG"}, {CAUSE_NoSPVknown, "No SPV known"}, {CAUSE_DestNotObtain, "Destination not obtainable"}, {CAUSE_NumberChanged, "Number changed"}, {CAUSE_OutOfOrder, "Out Of Order"}, {CAUSE_NoUserResponse, "No User Response"}, {CAUSE_UserBusy, "User Busy"}, {CAUSE_IncomingBarred, "Incoming Barred"}, {CAUSE_CallRejected, "Call Rejected"}, {CAUSE_NetworkCongestion, "Network Congestion"}, {CAUSE_RemoteUser, "Remote User initiated"}, {CAUSE_LocalProcErr, "Local Procedure Error"}, {CAUSE_RemoteProcErr, "Remote Procedure Error"}, {CAUSE_RemoteUserSuspend, "Remote User Suspend"}, {CAUSE_RemoteUserResumed, "Remote User Resumed"}, {CAUSE_UserInfoDiscarded, "User Info Discarded"} }; int cause_1tr6_len = (sizeof(cause_1tr6) / sizeof(struct MessageType)); static int prcause_1tr6(char *dest, u_char * p) { char *dp = dest; int i, cause; p++; if (0 == *p) { dp += sprintf(dp, " OK (cause length=0)\n"); return (dp - dest); } else if (*p > 1) { dp += sprintf(dp, " coding "); dp += prbits(dp, p[2], 7, 2); dp += sprintf(dp, " location "); dp += prbits(dp, p[2], 4, 4); *dp++ = '\n'; } p++; cause = 0x7f & *p; /* locate cause value */ for (i = 0; i < cause_1tr6_len; i++) if (cause_1tr6[i].nr == cause) break; /* display cause value if it exists */ if (i == cause_1tr6_len) dp += sprintf(dp, "Unknown cause type %x!\n", cause); else dp += sprintf(dp, " cause value %x : %s \n", cause, cause_1tr6[i].descr); return (dp - dest); } static int prchident(char *dest, u_char * p) { char *dp = dest; p += 2; dp += sprintf(dp, " octet 3 "); dp += prbits(dp, *p, 8, 8); *dp++ = '\n'; return (dp - dest); } static int prcalled(char *dest, u_char * p) { int l; char *dp = dest; p++; l = *p++ - 1; dp += sprintf(dp, " octet 3 "); dp += prbits(dp, *p++, 8, 8); *dp++ = '\n'; dp += sprintf(dp, " number digits "); while (l--) *dp++ = *p++; *dp++ = '\n'; return (dp - dest); } static int prcalling(char *dest, u_char * p) { int l; char *dp = dest; p++; l = *p++ - 1; dp += sprintf(dp, " octet 3 "); dp += prbits(dp, *p, 8, 8); *dp++ = '\n'; if (!(*p & 0x80)) { dp += sprintf(dp, " octet 3a "); dp += prbits(dp, *++p, 8, 8); *dp++ = '\n'; l--; }; p++; dp += sprintf(dp, " number digits "); while (l--) *dp++ = *p++; *dp++ = '\n'; return (dp - dest); } static int prbearer(char *dest, u_char * p) { char *dp = dest, ch; p += 2; dp += sprintf(dp, " octet 3 "); dp += prbits(dp, *p++, 8, 8); *dp++ = '\n'; dp += sprintf(dp, " octet 4 "); dp += prbits(dp, *p, 8, 8); *dp++ = '\n'; if ((*p++ & 0x1f) == 0x18) { dp += sprintf(dp, " octet 4.1 "); dp += prbits(dp, *p++, 8, 8); *dp++ = '\n'; } /* check for user information layer 1 */ if ((*p & 0x60) == 0x20) { ch = ' '; do { dp += sprintf(dp, " octet 5%c ", ch); dp += prbits(dp, *p, 8, 8); *dp++ = '\n'; if (ch == ' ') ch = 'a'; else ch++; } while (!(*p++ & 0x80)); } /* check for user information layer 2 */ if ((*p & 0x60) == 0x40) { dp += sprintf(dp, " octet 6 "); dp += prbits(dp, *p++, 8, 8); *dp++ = '\n'; } /* check for user information layer 3 */ if ((*p & 0x60) == 0x60) { dp += sprintf(dp, " octet 7 "); dp += prbits(dp, *p++, 8, 8); *dp++ = '\n'; } return (dp - dest); } static int general(char *dest, u_char * p) { char *dp = dest; char ch = ' '; int l, octet = 3; p++; l = *p++; /* Iterate over all octets in the information element */ while (l--) { dp += sprintf(dp, " octet %d%c ", octet, ch); dp += prbits(dp, *p++, 8, 8); *dp++ = '\n'; /* last octet in group? */ if (*p & 0x80) { octet++; ch = ' '; } else if (ch == ' ') ch = 'a'; else ch++; } return (dp - dest); } static int prcharge(char *dest, u_char * p) { char *dp = dest; int l; p++; l = *p++ - 1; dp += sprintf(dp, " GEA "); dp += prbits(dp, *p++, 8, 8); dp += sprintf(dp, " Anzahl: "); /* Iterate over all octets in the * information element */ while (l--) *dp++ = *p++; *dp++ = '\n'; return (dp - dest); } static int prtext(char *dest, u_char * p) { char *dp = dest; int l; p++; l = *p++; dp += sprintf(dp, " "); /* Iterate over all octets in the * information element */ while (l--) *dp++ = *p++; *dp++ = '\n'; return (dp - dest); } static int display(char *dest, u_char * p) { char *dp = dest; char ch = ' '; int l, octet = 3; p++; l = *p++; /* Iterate over all octets in the * display-information element */ dp += sprintf(dp, " \""); while (l--) { dp += sprintf(dp, "%c", *p++); /* last octet in group? */ if (*p & 0x80) { octet++; ch = ' '; } else if (ch == ' ') ch = 'a'; else ch++; } *dp++ = '\"'; *dp++ = '\n'; return (dp - dest); } int prfacility(char *dest, u_char * p) { char *dp = dest; int l, l2; p++; l = *p++; dp += sprintf(dp, " octet 3 "); dp += prbits(dp, *p++, 8, 8); dp += sprintf(dp, "\n"); l -= 1; while (l > 0) { dp += sprintf(dp, " octet 4 "); dp += prbits(dp, *p++, 8, 8); dp += sprintf(dp, "\n"); dp += sprintf(dp, " octet 5 %d\n", l2 = *p++ & 0x7f); l -= 2; dp += sprintf(dp, " contents "); while (l2--) { dp += sprintf(dp, "%2x ", *p++); l--; } dp += sprintf(dp, "\n"); } return (dp - dest); } static struct InformationElement { u_char nr; char *descr; int (*f) (char *, u_char *); } ielist[] = { { 0x00, "Segmented message", general }, { 0x04, "Bearer capability", prbearer }, { 0x08, "Cause", prcause }, { 0x10, "Call identity", general }, { 0x14, "Call state", general }, { 0x18, "Channel identification", prchident }, { 0x1c, "Facility", prfacility }, { 0x1e, "Progress indicator", general }, { 0x20, "Network-specific facilities", general }, { 0x27, "Notification indicator", general }, { 0x28, "Display", display }, { 0x29, "Date/Time", general }, { 0x2c, "Keypad facility", general }, { 0x34, "Signal", general }, { 0x40, "Information rate", general }, { 0x42, "End-to-end delay", general }, { 0x43, "Transit delay selection and indication", general }, { 0x44, "Packet layer binary parameters", general }, { 0x45, "Packet layer window size", general }, { 0x46, "Packet size", general }, { 0x47, "Closed user group", general }, { 0x4a, "Reverse charge indication", general }, { 0x6c, "Calling party number", prcalling }, { 0x6d, "Calling party subaddress", general }, { 0x70, "Called party number", prcalled }, { 0x71, "Called party subaddress", general }, { 0x74, "Redirecting number", general }, { 0x78, "Transit network selection", general }, { 0x79, "Restart indicator", general }, { 0x7c, "Low layer compatibility", general }, { 0x7d, "High layer compatibility", general }, { 0x7e, "User-user", general }, { 0x7f, "Escape for extension", general }, }; #define IESIZE sizeof(ielist)/sizeof(struct InformationElement) static struct InformationElement we_0[] = { {WE0_cause, "Cause", prcause_1tr6}, {WE0_connAddr, "Connecting Address", prcalled}, {WE0_callID, "Call IDentity", general}, {WE0_chanID, "Channel IDentity", general}, {WE0_netSpecFac, "Network Specific Facility", general}, {WE0_display, "Display", general}, {WE0_keypad, "Keypad", general}, {WE0_origAddr, "Origination Address", prcalled}, {WE0_destAddr, "Destination Address", prcalled}, {WE0_userInfo, "User Info", general} }; #define WE_0_LEN (sizeof(we_0) / sizeof(struct InformationElement)) static struct InformationElement we_6[] = { {WE6_serviceInd, "Service Indicator", general}, {WE6_chargingInfo, "Charging Information", prcharge}, {WE6_date, "Date", prtext}, {WE6_facSelect, "Facility Select", general}, {WE6_facStatus, "Facility Status", general}, {WE6_statusCalled, "Status Called", general}, {WE6_addTransAttr, "Additional Transmission Attributes", general} }; #define WE_6_LEN (sizeof(we_6) / sizeof(struct InformationElement)) int QuickHex(char *txt, u_char * p, int cnt) { register int i; register char *t = txt; register u_char w; for (i = 0; i < cnt; i++) { *t++ = ' '; w = (p[i] >> 4) & 0x0f; if (w < 10) *t++ = '0' + w; else *t++ = 'A' - 10 + w; w = p[i] & 0x0f; if (w < 10) *t++ = '0' + w; else *t++ = 'A' - 10 + w; } *t++ = 0; return (t - txt); } void LogFrame(struct IsdnCardState *cs, u_char * buf, int size) { char *dp; if (size < 1) return; dp = cs->dlog; if (size < MAX_DLOG_SPACE / 3 - 10) { *dp++ = 'H'; *dp++ = 'E'; *dp++ = 'X'; *dp++ = ':'; dp += QuickHex(dp, buf, size); dp--; *dp++ = '\n'; *dp = 0; HiSax_putstatus(cs, NULL, cs->dlog); } else HiSax_putstatus(cs, "LogFrame: ", "warning Frame too big (%d)", size); } void dlogframe(struct IsdnCardState *cs, struct sk_buff *skb, int dir) { u_char *bend, *buf; char *dp; unsigned char pd, cr_l, cr, mt; unsigned char sapi, tei, ftyp; int i, cset = 0, cs_old = 0, cs_fest = 0; int size, finish = 0; if (skb->len < 3) return; /* display header */ dp = cs->dlog; dp += jiftime(dp, jiffies); *dp++ = ' '; sapi = skb->data[0] >> 2; tei = skb->data[1] >> 1; ftyp = skb->data[2]; buf = skb->data; dp += sprintf(dp, "frame %s ", dir ? "network->user" : "user->network"); size = skb->len; if (tei == GROUP_TEI) { if (sapi == CTRL_SAPI) { /* sapi 0 */ if (ftyp == 3) { dp += sprintf(dp, "broadcast\n"); buf += 3; size -= 3; } else { dp += sprintf(dp, "no UI broadcast\n"); finish = 1; } } else if (sapi == TEI_SAPI) { dp += sprintf(dp, "tei managment\n"); finish = 1; } else { dp += sprintf(dp, "unknown sapi %d broadcast\n", sapi); finish = 1; } } else { if (sapi == CTRL_SAPI) { if (!(ftyp & 1)) { /* IFrame */ dp += sprintf(dp, "with tei %d\n", tei); buf += 4; size -= 4; } else { dp += sprintf(dp, "SFrame with tei %d\n", tei); finish = 1; } } else { dp += sprintf(dp, "unknown sapi %d tei %d\n", sapi, tei); finish = 1; } } bend = skb->data + skb->len; if (buf >= bend) { dp += sprintf(dp, "frame too short\n"); finish = 1; } if (finish) { *dp = 0; HiSax_putstatus(cs, NULL, cs->dlog); return; } if ((0xfe & buf[0]) == PROTO_DIS_N0) { /* 1TR6 */ /* locate message type */ pd = *buf++; cr_l = *buf++; if (cr_l) cr = *buf++; else cr = 0; mt = *buf++; if (pd == PROTO_DIS_N0) { /* N0 */ for (i = 0; i < MT_N0_LEN; i++) if (mt_n0[i].nr == mt) break; /* display message type if it exists */ if (i == MT_N0_LEN) dp += sprintf(dp, "callref %d %s size %d unknown message type N0 %x!\n", cr & 0x7f, (cr & 0x80) ? "called" : "caller", size, mt); else dp += sprintf(dp, "callref %d %s size %d message type %s\n", cr & 0x7f, (cr & 0x80) ? "called" : "caller", size, mt_n0[i].descr); } else { /* N1 */ for (i = 0; i < MT_N1_LEN; i++) if (mt_n1[i].nr == mt) break; /* display message type if it exists */ if (i == MT_N1_LEN) dp += sprintf(dp, "callref %d %s size %d unknown message type N1 %x!\n", cr & 0x7f, (cr & 0x80) ? "called" : "caller", size, mt); else dp += sprintf(dp, "callref %d %s size %d message type %s\n", cr & 0x7f, (cr & 0x80) ? "called" : "caller", size, mt_n1[i].descr); } /* display each information element */ while (buf < bend) { /* Is it a single octet information element? */ if (*buf & 0x80) { switch ((*buf >> 4) & 7) { case 1: dp += sprintf(dp, " Shift %x\n", *buf & 0xf); cs_old = cset; cset = *buf & 7; cs_fest = *buf & 8; break; case 3: dp += sprintf(dp, " Congestion level %x\n", *buf & 0xf); break; case 2: if (*buf == 0xa0) { dp += sprintf(dp, " More data\n"); break; } if (*buf == 0xa1) { dp += sprintf(dp, " Sending complete\n"); } break; /* fall through */ default: dp += sprintf(dp, " Reserved %x\n", *buf); break; } buf++; continue; } /* No, locate it in the table */ if (cset == 0) { for (i = 0; i < WE_0_LEN; i++) if (*buf == we_0[i].nr) break; /* When found, give appropriate msg */ if (i != WE_0_LEN) { dp += sprintf(dp, " %s\n", we_0[i].descr); dp += we_0[i].f(dp, buf); } else dp += sprintf(dp, " Codeset %d attribute %x attribute size %d\n", cset, *buf, buf[1]); } else if (cset == 6) { for (i = 0; i < WE_6_LEN; i++) if (*buf == we_6[i].nr) break; /* When found, give appropriate msg */ if (i != WE_6_LEN) { dp += sprintf(dp, " %s\n", we_6[i].descr); dp += we_6[i].f(dp, buf); } else dp += sprintf(dp, " Codeset %d attribute %x attribute size %d\n", cset, *buf, buf[1]); } else dp += sprintf(dp, " Unknown Codeset %d attribute %x attribute size %d\n", cset, *buf, buf[1]); /* Skip to next element */ if (cs_fest == 8) { cset = cs_old; cs_old = 0; cs_fest = 0; } buf += buf[1] + 2; } } else if (buf[0] == 8) { /* EURO */ /* locate message type */ buf++; cr_l = *buf++; if (cr_l) cr = *buf++; else cr = 0; mt = *buf++; for (i = 0; i < MTSIZE; i++) if (mtlist[i].nr == mt) break; /* display message type if it exists */ if (i == MTSIZE) dp += sprintf(dp, "callref %d %s size %d unknown message type %x!\n", cr & 0x7f, (cr & 0x80) ? "called" : "caller", size, mt); else dp += sprintf(dp, "callref %d %s size %d message type %s\n", cr & 0x7f, (cr & 0x80) ? "called" : "caller", size, mtlist[i].descr); /* display each information element */ while (buf < bend) { /* Is it a single octet information element? */ if (*buf & 0x80) { switch ((*buf >> 4) & 7) { case 1: dp += sprintf(dp, " Shift %x\n", *buf & 0xf); break; case 3: dp += sprintf(dp, " Congestion level %x\n", *buf & 0xf); break; case 5: dp += sprintf(dp, " Repeat indicator %x\n", *buf & 0xf); break; case 2: if (*buf == 0xa0) { dp += sprintf(dp, " More data\n"); break; } if (*buf == 0xa1) { dp += sprintf(dp, " Sending complete\n"); } break; /* fall through */ default: dp += sprintf(dp, " Reserved %x\n", *buf); break; } buf++; continue; } /* No, locate it in the table */ for (i = 0; i < IESIZE; i++) if (*buf == ielist[i].nr) break; /* When not found, give appropriate msg */ if (i != IESIZE) { dp += sprintf(dp, " %s\n", ielist[i].descr); dp += ielist[i].f(dp, buf); } else dp += sprintf(dp, " attribute %x attribute size %d\n", *buf, buf[1]); /* Skip to next element */ buf += buf[1] + 2; } } else { dp += sprintf(dp, "Unknown protocol %x!", buf[0]); } *dp = 0; HiSax_putstatus(cs, NULL, cs->dlog); }
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