--- /dev/null
+/* $Id: l3dss1.c,v 2.32.2.3 2004/01/13 14:31:25 keil Exp $
+ *
+ * EURO/DSS1 D-channel protocol
+ *
+ * German 1TR6 D-channel protocol
+ *
+ * Author Karsten Keil
+ * based on the teles driver from Jan den Ouden
+ * Copyright by Karsten Keil <keil@isdn4linux.de>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * For changes and modifications please read
+ * Documentation/isdn/HiSax.cert
+ *
+ * Thanks to Jan den Ouden
+ * Fritz Elfert
+ *
+ */
+
+#include "hisax.h"
+#include "isdnl3.h"
+#include "l3dss1.h"
+#include <linux/ctype.h>
+#include <linux/slab.h>
+
+extern char *HiSax_getrev(const char *revision);
+static const char *dss1_revision = "$Revision: 2.32.2.3 $";
+
+#define EXT_BEARER_CAPS 1
+
+#define MsgHead(ptr, cref, mty) \
+ *ptr++ = 0x8; \
+ if (cref == -1) { \
+ *ptr++ = 0x0; \
+ } else { \
+ *ptr++ = 0x1; \
+ *ptr++ = cref^0x80; \
+ } \
+ *ptr++ = mty
+
+
+/**********************************************/
+/* get a new invoke id for remote operations. */
+/* Only a return value != 0 is valid */
+/**********************************************/
+static unsigned char new_invoke_id(struct PStack *p)
+{
+ unsigned char retval;
+ int i;
+
+ i = 32; /* maximum search depth */
+
+ retval = p->prot.dss1.last_invoke_id + 1; /* try new id */
+ while ((i) && (p->prot.dss1.invoke_used[retval >> 3] == 0xFF)) {
+ p->prot.dss1.last_invoke_id = (retval & 0xF8) + 8;
+ i--;
+ }
+ if (i) {
+ while (p->prot.dss1.invoke_used[retval >> 3] & (1 << (retval & 7)))
+ retval++;
+ } else
+ retval = 0;
+ p->prot.dss1.last_invoke_id = retval;
+ p->prot.dss1.invoke_used[retval >> 3] |= (1 << (retval & 7));
+ return (retval);
+} /* new_invoke_id */
+
+/*************************/
+/* free a used invoke id */
+/*************************/
+static void free_invoke_id(struct PStack *p, unsigned char id)
+{
+
+ if (!id) return; /* 0 = invalid value */
+
+ p->prot.dss1.invoke_used[id >> 3] &= ~(1 << (id & 7));
+} /* free_invoke_id */
+
+
+/**********************************************************/
+/* create a new l3 process and fill in dss1 specific data */
+/**********************************************************/
+static struct l3_process
+*dss1_new_l3_process(struct PStack *st, int cr)
+{ struct l3_process *proc;
+
+ if (!(proc = new_l3_process(st, cr)))
+ return (NULL);
+
+ proc->prot.dss1.invoke_id = 0;
+ proc->prot.dss1.remote_operation = 0;
+ proc->prot.dss1.uus1_data[0] = '\0';
+
+ return (proc);
+} /* dss1_new_l3_process */
+
+/************************************************/
+/* free a l3 process and all dss1 specific data */
+/************************************************/
+static void
+dss1_release_l3_process(struct l3_process *p)
+{
+ free_invoke_id(p->st, p->prot.dss1.invoke_id);
+ release_l3_process(p);
+} /* dss1_release_l3_process */
+
+/********************************************************/
+/* search a process with invoke id id and dummy callref */
+/********************************************************/
+static struct l3_process *
+l3dss1_search_dummy_proc(struct PStack *st, int id)
+{ struct l3_process *pc = st->l3.proc; /* start of processes */
+
+ if (!id) return (NULL);
+
+ while (pc)
+ { if ((pc->callref == -1) && (pc->prot.dss1.invoke_id == id))
+ return (pc);
+ pc = pc->next;
+ }
+ return (NULL);
+} /* l3dss1_search_dummy_proc */
+
+/*******************************************************************/
+/* called when a facility message with a dummy callref is received */
+/* and a return result is delivered. id specifies the invoke id. */
+/*******************************************************************/
+static void
+l3dss1_dummy_return_result(struct PStack *st, int id, u_char *p, u_char nlen)
+{ isdn_ctrl ic;
+ struct IsdnCardState *cs;
+ struct l3_process *pc = NULL;
+
+ if ((pc = l3dss1_search_dummy_proc(st, id)))
+ { L3DelTimer(&pc->timer); /* remove timer */
+
+ cs = pc->st->l1.hardware;
+ ic.driver = cs->myid;
+ ic.command = ISDN_STAT_PROT;
+ ic.arg = DSS1_STAT_INVOKE_RES;
+ ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id;
+ ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id;
+ ic.parm.dss1_io.proc = pc->prot.dss1.proc;
+ ic.parm.dss1_io.timeout = 0;
+ ic.parm.dss1_io.datalen = nlen;
+ ic.parm.dss1_io.data = p;
+ free_invoke_id(pc->st, pc->prot.dss1.invoke_id);
+ pc->prot.dss1.invoke_id = 0; /* reset id */
+
+ cs->iif.statcallb(&ic);
+ dss1_release_l3_process(pc);
+ }
+ else
+ l3_debug(st, "dummy return result id=0x%x result len=%d", id, nlen);
+} /* l3dss1_dummy_return_result */
+
+/*******************************************************************/
+/* called when a facility message with a dummy callref is received */
+/* and a return error is delivered. id specifies the invoke id. */
+/*******************************************************************/
+static void
+l3dss1_dummy_error_return(struct PStack *st, int id, ulong error)
+{ isdn_ctrl ic;
+ struct IsdnCardState *cs;
+ struct l3_process *pc = NULL;
+
+ if ((pc = l3dss1_search_dummy_proc(st, id)))
+ { L3DelTimer(&pc->timer); /* remove timer */
+
+ cs = pc->st->l1.hardware;
+ ic.driver = cs->myid;
+ ic.command = ISDN_STAT_PROT;
+ ic.arg = DSS1_STAT_INVOKE_ERR;
+ ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id;
+ ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id;
+ ic.parm.dss1_io.proc = pc->prot.dss1.proc;
+ ic.parm.dss1_io.timeout = error;
+ ic.parm.dss1_io.datalen = 0;
+ ic.parm.dss1_io.data = NULL;
+ free_invoke_id(pc->st, pc->prot.dss1.invoke_id);
+ pc->prot.dss1.invoke_id = 0; /* reset id */
+
+ cs->iif.statcallb(&ic);
+ dss1_release_l3_process(pc);
+ }
+ else
+ l3_debug(st, "dummy return error id=0x%x error=0x%lx", id, error);
+} /* l3dss1_error_return */
+
+/*******************************************************************/
+/* called when a facility message with a dummy callref is received */
+/* and a invoke is delivered. id specifies the invoke id. */
+/*******************************************************************/
+static void
+l3dss1_dummy_invoke(struct PStack *st, int cr, int id,
+ int ident, u_char *p, u_char nlen)
+{ isdn_ctrl ic;
+ struct IsdnCardState *cs;
+
+ l3_debug(st, "dummy invoke %s id=0x%x ident=0x%x datalen=%d",
+ (cr == -1) ? "local" : "broadcast", id, ident, nlen);
+ if (cr >= -1) return; /* ignore local data */
+
+ cs = st->l1.hardware;
+ ic.driver = cs->myid;
+ ic.command = ISDN_STAT_PROT;
+ ic.arg = DSS1_STAT_INVOKE_BRD;
+ ic.parm.dss1_io.hl_id = id;
+ ic.parm.dss1_io.ll_id = 0;
+ ic.parm.dss1_io.proc = ident;
+ ic.parm.dss1_io.timeout = 0;
+ ic.parm.dss1_io.datalen = nlen;
+ ic.parm.dss1_io.data = p;
+
+ cs->iif.statcallb(&ic);
+} /* l3dss1_dummy_invoke */
+
+static void
+l3dss1_parse_facility(struct PStack *st, struct l3_process *pc,
+ int cr, u_char *p)
+{
+ int qd_len = 0;
+ unsigned char nlen = 0, ilen, cp_tag;
+ int ident, id;
+ ulong err_ret;
+
+ if (pc)
+ st = pc->st; /* valid Stack */
+ else
+ if ((!st) || (cr >= 0)) return; /* neither pc nor st specified */
+
+ p++;
+ qd_len = *p++;
+ if (qd_len == 0) {
+ l3_debug(st, "qd_len == 0");
+ return;
+ }
+ if ((*p & 0x1F) != 0x11) { /* Service discriminator, supplementary service */
+ l3_debug(st, "supplementary service != 0x11");
+ return;
+ }
+ while (qd_len > 0 && !(*p & 0x80)) { /* extension ? */
+ p++;
+ qd_len--;
+ }
+ if (qd_len < 2) {
+ l3_debug(st, "qd_len < 2");
+ return;
+ }
+ p++;
+ qd_len--;
+ if ((*p & 0xE0) != 0xA0) { /* class and form */
+ l3_debug(st, "class and form != 0xA0");
+ return;
+ }
+
+ cp_tag = *p & 0x1F; /* remember tag value */
+
+ p++;
+ qd_len--;
+ if (qd_len < 1)
+ { l3_debug(st, "qd_len < 1");
+ return;
+ }
+ if (*p & 0x80)
+ { /* length format indefinite or limited */
+ nlen = *p++ & 0x7F; /* number of len bytes or indefinite */
+ if ((qd_len-- < ((!nlen) ? 3 : (1 + nlen))) ||
+ (nlen > 1))
+ { l3_debug(st, "length format error or not implemented");
+ return;
+ }
+ if (nlen == 1)
+ { nlen = *p++; /* complete length */
+ qd_len--;
+ }
+ else
+ { qd_len -= 2; /* trailing null bytes */
+ if ((*(p + qd_len)) || (*(p + qd_len + 1)))
+ { l3_debug(st, "length format indefinite error");
+ return;
+ }
+ nlen = qd_len;
+ }
+ }
+ else
+ { nlen = *p++;
+ qd_len--;
+ }
+ if (qd_len < nlen)
+ { l3_debug(st, "qd_len < nlen");
+ return;
+ }
+ qd_len -= nlen;
+
+ if (nlen < 2)
+ { l3_debug(st, "nlen < 2");
+ return;
+ }
+ if (*p != 0x02)
+ { /* invoke identifier tag */
+ l3_debug(st, "invoke identifier tag !=0x02");
+ return;
+ }
+ p++;
+ nlen--;
+ if (*p & 0x80)
+ { /* length format */
+ l3_debug(st, "invoke id length format 2");
+ return;
+ }
+ ilen = *p++;
+ nlen--;
+ if (ilen > nlen || ilen == 0)
+ { l3_debug(st, "ilen > nlen || ilen == 0");
+ return;
+ }
+ nlen -= ilen;
+ id = 0;
+ while (ilen > 0)
+ { id = (id << 8) | (*p++ & 0xFF); /* invoke identifier */
+ ilen--;
+ }
+
+ switch (cp_tag) { /* component tag */
+ case 1: /* invoke */
+ if (nlen < 2) {
+ l3_debug(st, "nlen < 2 22");
+ return;
+ }
+ if (*p != 0x02) { /* operation value */
+ l3_debug(st, "operation value !=0x02");
+ return;
+ }
+ p++;
+ nlen--;
+ ilen = *p++;
+ nlen--;
+ if (ilen > nlen || ilen == 0) {
+ l3_debug(st, "ilen > nlen || ilen == 0 22");
+ return;
+ }
+ nlen -= ilen;
+ ident = 0;
+ while (ilen > 0) {
+ ident = (ident << 8) | (*p++ & 0xFF);
+ ilen--;
+ }
+
+ if (!pc)
+ { l3dss1_dummy_invoke(st, cr, id, ident, p, nlen);
+ return;
+ }
+#ifdef CONFIG_DE_AOC
+ {
+
+#define FOO1(s, a, b) \
+ while (nlen > 1) { \
+ int ilen = p[1]; \
+ if (nlen < ilen + 2) { \
+ l3_debug(st, "FOO1 nlen < ilen+2"); \
+ return; \
+ } \
+ nlen -= ilen + 2; \
+ if ((*p & 0xFF) == (a)) { \
+ int nlen = ilen; \
+ p += 2; \
+ b; \
+ } else { \
+ p += ilen + 2; \
+ } \
+ }
+
+ switch (ident) {
+ case 0x22: /* during */
+ FOO1("1A", 0x30, FOO1("1C", 0xA1, FOO1("1D", 0x30, FOO1("1E", 0x02, ( {
+ ident = 0;
+ nlen = (nlen) ? nlen : 0; /* Make gcc happy */
+ while (ilen > 0) {
+ ident = (ident << 8) | *p++;
+ ilen--;
+ }
+ if (ident > pc->para.chargeinfo) {
+ pc->para.chargeinfo = ident;
+ st->l3.l3l4(st, CC_CHARGE | INDICATION, pc);
+ }
+ if (st->l3.debug & L3_DEB_CHARGE) {
+ if (*(p + 2) == 0) {
+ l3_debug(st, "charging info during %d", pc->para.chargeinfo);
+ }
+ else {
+ l3_debug(st, "charging info final %d", pc->para.chargeinfo);
+ }
+ }
+ }
+ )))))
+ break;
+ case 0x24: /* final */
+ FOO1("2A", 0x30, FOO1("2B", 0x30, FOO1("2C", 0xA1, FOO1("2D", 0x30, FOO1("2E", 0x02, ( {
+ ident = 0;
+ nlen = (nlen) ? nlen : 0; /* Make gcc happy */
+ while (ilen > 0) {
+ ident = (ident << 8) | *p++;
+ ilen--;
+ }
+ if (ident > pc->para.chargeinfo) {
+ pc->para.chargeinfo = ident;
+ st->l3.l3l4(st, CC_CHARGE | INDICATION, pc);
+ }
+ if (st->l3.debug & L3_DEB_CHARGE) {
+ l3_debug(st, "charging info final %d", pc->para.chargeinfo);
+ }
+ }
+ ))))))
+ break;
+ default:
+ l3_debug(st, "invoke break invalid ident %02x", ident);
+ break;
+ }
+#undef FOO1
+
+ }
+#else /* not CONFIG_DE_AOC */
+ l3_debug(st, "invoke break");
+#endif /* not CONFIG_DE_AOC */
+ break;
+ case 2: /* return result */
+ /* if no process available handle separately */
+ if (!pc)
+ { if (cr == -1)
+ l3dss1_dummy_return_result(st, id, p, nlen);
+ return;
+ }
+ if ((pc->prot.dss1.invoke_id) && (pc->prot.dss1.invoke_id == id))
+ { /* Diversion successful */
+ free_invoke_id(st, pc->prot.dss1.invoke_id);
+ pc->prot.dss1.remote_result = 0; /* success */
+ pc->prot.dss1.invoke_id = 0;
+ pc->redir_result = pc->prot.dss1.remote_result;
+ st->l3.l3l4(st, CC_REDIR | INDICATION, pc); } /* Diversion successful */
+ else
+ l3_debug(st, "return error unknown identifier");
+ break;
+ case 3: /* return error */
+ err_ret = 0;
+ if (nlen < 2)
+ { l3_debug(st, "return error nlen < 2");
+ return;
+ }
+ if (*p != 0x02)
+ { /* result tag */
+ l3_debug(st, "invoke error tag !=0x02");
+ return;
+ }
+ p++;
+ nlen--;
+ if (*p > 4)
+ { /* length format */
+ l3_debug(st, "invoke return errlen > 4 ");
+ return;
+ }
+ ilen = *p++;
+ nlen--;
+ if (ilen > nlen || ilen == 0)
+ { l3_debug(st, "error return ilen > nlen || ilen == 0");
+ return;
+ }
+ nlen -= ilen;
+ while (ilen > 0)
+ { err_ret = (err_ret << 8) | (*p++ & 0xFF); /* error value */
+ ilen--;
+ }
+ /* if no process available handle separately */
+ if (!pc)
+ { if (cr == -1)
+ l3dss1_dummy_error_return(st, id, err_ret);
+ return;
+ }
+ if ((pc->prot.dss1.invoke_id) && (pc->prot.dss1.invoke_id == id))
+ { /* Deflection error */
+ free_invoke_id(st, pc->prot.dss1.invoke_id);
+ pc->prot.dss1.remote_result = err_ret; /* result */
+ pc->prot.dss1.invoke_id = 0;
+ pc->redir_result = pc->prot.dss1.remote_result;
+ st->l3.l3l4(st, CC_REDIR | INDICATION, pc);
+ } /* Deflection error */
+ else
+ l3_debug(st, "return result unknown identifier");
+ break;
+ default:
+ l3_debug(st, "facility default break tag=0x%02x", cp_tag);
+ break;
+ }
+}
+
+static void
+l3dss1_message(struct l3_process *pc, u_char mt)
+{
+ struct sk_buff *skb;
+ u_char *p;
+
+ if (!(skb = l3_alloc_skb(4)))
+ return;
+ p = skb_put(skb, 4);
+ MsgHead(p, pc->callref, mt);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+}
+
+static void
+l3dss1_message_cause(struct l3_process *pc, u_char mt, u_char cause)
+{
+ struct sk_buff *skb;
+ u_char tmp[16];
+ u_char *p = tmp;
+ int l;
+
+ MsgHead(p, pc->callref, mt);
+ *p++ = IE_CAUSE;
+ *p++ = 0x2;
+ *p++ = 0x80;
+ *p++ = cause | 0x80;
+
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+}
+
+static void
+l3dss1_status_send(struct l3_process *pc, u_char pr, void *arg)
+{
+ u_char tmp[16];
+ u_char *p = tmp;
+ int l;
+ struct sk_buff *skb;
+
+ MsgHead(p, pc->callref, MT_STATUS);
+
+ *p++ = IE_CAUSE;
+ *p++ = 0x2;
+ *p++ = 0x80;
+ *p++ = pc->para.cause | 0x80;
+
+ *p++ = IE_CALL_STATE;
+ *p++ = 0x1;
+ *p++ = pc->state & 0x3f;
+
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+}
+
+static void
+l3dss1_msg_without_setup(struct l3_process *pc, u_char pr, void *arg)
+{
+ /* This routine is called if here was no SETUP made (checks in dss1up and in
+ * l3dss1_setup) and a RELEASE_COMPLETE have to be sent with an error code
+ * MT_STATUS_ENQUIRE in the NULL state is handled too
+ */
+ u_char tmp[16];
+ u_char *p = tmp;
+ int l;
+ struct sk_buff *skb;
+
+ switch (pc->para.cause) {
+ case 81: /* invalid callreference */
+ case 88: /* incomp destination */
+ case 96: /* mandory IE missing */
+ case 100: /* invalid IE contents */
+ case 101: /* incompatible Callstate */
+ MsgHead(p, pc->callref, MT_RELEASE_COMPLETE);
+ *p++ = IE_CAUSE;
+ *p++ = 0x2;
+ *p++ = 0x80;
+ *p++ = pc->para.cause | 0x80;
+ break;
+ default:
+ printk(KERN_ERR "HiSax l3dss1_msg_without_setup wrong cause %d\n",
+ pc->para.cause);
+ return;
+ }
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+ dss1_release_l3_process(pc);
+}
+
+static int ie_ALERTING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1,
+ IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_HLC,
+ IE_USER_USER, -1};
+static int ie_CALL_PROCEEDING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1,
+ IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_HLC, -1};
+static int ie_CONNECT[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1,
+ IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_DATE, IE_SIGNAL,
+ IE_CONNECT_PN, IE_CONNECT_SUB, IE_LLC, IE_HLC, IE_USER_USER, -1};
+static int ie_CONNECT_ACKNOWLEDGE[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_SIGNAL, -1};
+static int ie_DISCONNECT[] = {IE_CAUSE | IE_MANDATORY, IE_FACILITY,
+ IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1};
+static int ie_INFORMATION[] = {IE_COMPLETE, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL,
+ IE_CALLED_PN, -1};
+static int ie_NOTIFY[] = {IE_BEARER, IE_NOTIFY | IE_MANDATORY, IE_DISPLAY, -1};
+static int ie_PROGRESS[] = {IE_BEARER, IE_CAUSE, IE_FACILITY, IE_PROGRESS |
+ IE_MANDATORY, IE_DISPLAY, IE_HLC, IE_USER_USER, -1};
+static int ie_RELEASE[] = {IE_CAUSE | IE_MANDATORY_1, IE_FACILITY, IE_DISPLAY,
+ IE_SIGNAL, IE_USER_USER, -1};
+/* a RELEASE_COMPLETE with errors don't require special actions
+ static int ie_RELEASE_COMPLETE[] = {IE_CAUSE | IE_MANDATORY_1, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1};
+*/
+static int ie_RESUME_ACKNOWLEDGE[] = {IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY,
+ IE_DISPLAY, -1};
+static int ie_RESUME_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1};
+static int ie_SETUP[] = {IE_COMPLETE, IE_BEARER | IE_MANDATORY,
+ IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY, IE_PROGRESS,
+ IE_NET_FAC, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL, IE_CALLING_PN,
+ IE_CALLING_SUB, IE_CALLED_PN, IE_CALLED_SUB, IE_REDIR_NR,
+ IE_LLC, IE_HLC, IE_USER_USER, -1};
+static int ie_SETUP_ACKNOWLEDGE[] = {IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY,
+ IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, -1};
+static int ie_STATUS[] = {IE_CAUSE | IE_MANDATORY, IE_CALL_STATE |
+ IE_MANDATORY, IE_DISPLAY, -1};
+static int ie_STATUS_ENQUIRY[] = {IE_DISPLAY, -1};
+static int ie_SUSPEND_ACKNOWLEDGE[] = {IE_DISPLAY, IE_FACILITY, -1};
+static int ie_SUSPEND_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1};
+/* not used
+ * static int ie_CONGESTION_CONTROL[] = {IE_CONGESTION | IE_MANDATORY,
+ * IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1};
+ * static int ie_USER_INFORMATION[] = {IE_MORE_DATA, IE_USER_USER | IE_MANDATORY, -1};
+ * static int ie_RESTART[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_RESTART_IND |
+ * IE_MANDATORY, -1};
+ */
+static int ie_FACILITY[] = {IE_FACILITY | IE_MANDATORY, IE_DISPLAY, -1};
+static int comp_required[] = {1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, -1};
+static int l3_valid_states[] = {0, 1, 2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 15, 17, 19, 25, -1};
+
+struct ie_len {
+ int ie;
+ int len;
+};
+
+static
+struct ie_len max_ie_len[] = {
+ {IE_SEGMENT, 4},
+ {IE_BEARER, 12},
+ {IE_CAUSE, 32},
+ {IE_CALL_ID, 10},
+ {IE_CALL_STATE, 3},
+ {IE_CHANNEL_ID, 34},
+ {IE_FACILITY, 255},
+ {IE_PROGRESS, 4},
+ {IE_NET_FAC, 255},
+ {IE_NOTIFY, 3},
+ {IE_DISPLAY, 82},
+ {IE_DATE, 8},
+ {IE_KEYPAD, 34},
+ {IE_SIGNAL, 3},
+ {IE_INFORATE, 6},
+ {IE_E2E_TDELAY, 11},
+ {IE_TDELAY_SEL, 5},
+ {IE_PACK_BINPARA, 3},
+ {IE_PACK_WINSIZE, 4},
+ {IE_PACK_SIZE, 4},
+ {IE_CUG, 7},
+ {IE_REV_CHARGE, 3},
+ {IE_CALLING_PN, 24},
+ {IE_CALLING_SUB, 23},
+ {IE_CALLED_PN, 24},
+ {IE_CALLED_SUB, 23},
+ {IE_REDIR_NR, 255},
+ {IE_TRANS_SEL, 255},
+ {IE_RESTART_IND, 3},
+ {IE_LLC, 18},
+ {IE_HLC, 5},
+ {IE_USER_USER, 131},
+ {-1, 0},
+};
+
+static int
+getmax_ie_len(u_char ie) {
+ int i = 0;
+ while (max_ie_len[i].ie != -1) {
+ if (max_ie_len[i].ie == ie)
+ return (max_ie_len[i].len);
+ i++;
+ }
+ return (255);
+}
+
+static int
+ie_in_set(struct l3_process *pc, u_char ie, int *checklist) {
+ int ret = 1;
+
+ while (*checklist != -1) {
+ if ((*checklist & 0xff) == ie) {
+ if (ie & 0x80)
+ return (-ret);
+ else
+ return (ret);
+ }
+ ret++;
+ checklist++;
+ }
+ return (0);
+}
+
+static int
+check_infoelements(struct l3_process *pc, struct sk_buff *skb, int *checklist)
+{
+ int *cl = checklist;
+ u_char mt;
+ u_char *p, ie;
+ int l, newpos, oldpos;
+ int err_seq = 0, err_len = 0, err_compr = 0, err_ureg = 0;
+ u_char codeset = 0;
+ u_char old_codeset = 0;
+ u_char codelock = 1;
+
+ p = skb->data;
+ /* skip cr */
+ p++;
+ l = (*p++) & 0xf;
+ p += l;
+ mt = *p++;
+ oldpos = 0;
+ while ((p - skb->data) < skb->len) {
+ if ((*p & 0xf0) == 0x90) { /* shift codeset */
+ old_codeset = codeset;
+ codeset = *p & 7;
+ if (*p & 0x08)
+ codelock = 0;
+ else
+ codelock = 1;
+ if (pc->debug & L3_DEB_CHECK)
+ l3_debug(pc->st, "check IE shift%scodeset %d->%d",
+ codelock ? " locking " : " ", old_codeset, codeset);
+ p++;
+ continue;
+ }
+ if (!codeset) { /* only codeset 0 */
+ if ((newpos = ie_in_set(pc, *p, cl))) {
+ if (newpos > 0) {
+ if (newpos < oldpos)
+ err_seq++;
+ else
+ oldpos = newpos;
+ }
+ } else {
+ if (ie_in_set(pc, *p, comp_required))
+ err_compr++;
+ else
+ err_ureg++;
+ }
+ }
+ ie = *p++;
+ if (ie & 0x80) {
+ l = 1;
+ } else {
+ l = *p++;
+ p += l;
+ l += 2;
+ }
+ if (!codeset && (l > getmax_ie_len(ie)))
+ err_len++;
+ if (!codelock) {
+ if (pc->debug & L3_DEB_CHECK)
+ l3_debug(pc->st, "check IE shift back codeset %d->%d",
+ codeset, old_codeset);
+ codeset = old_codeset;
+ codelock = 1;
+ }
+ }
+ if (err_compr | err_ureg | err_len | err_seq) {
+ if (pc->debug & L3_DEB_CHECK)
+ l3_debug(pc->st, "check IE MT(%x) %d/%d/%d/%d",
+ mt, err_compr, err_ureg, err_len, err_seq);
+ if (err_compr)
+ return (ERR_IE_COMPREHENSION);
+ if (err_ureg)
+ return (ERR_IE_UNRECOGNIZED);
+ if (err_len)
+ return (ERR_IE_LENGTH);
+ if (err_seq)
+ return (ERR_IE_SEQUENCE);
+ }
+ return (0);
+}
+
+/* verify if a message type exists and contain no IE error */
+static int
+l3dss1_check_messagetype_validity(struct l3_process *pc, int mt, void *arg)
+{
+ switch (mt) {
+ case MT_ALERTING:
+ case MT_CALL_PROCEEDING:
+ case MT_CONNECT:
+ case MT_CONNECT_ACKNOWLEDGE:
+ case MT_DISCONNECT:
+ case MT_INFORMATION:
+ case MT_FACILITY:
+ case MT_NOTIFY:
+ case MT_PROGRESS:
+ case MT_RELEASE:
+ case MT_RELEASE_COMPLETE:
+ case MT_SETUP:
+ case MT_SETUP_ACKNOWLEDGE:
+ case MT_RESUME_ACKNOWLEDGE:
+ case MT_RESUME_REJECT:
+ case MT_SUSPEND_ACKNOWLEDGE:
+ case MT_SUSPEND_REJECT:
+ case MT_USER_INFORMATION:
+ case MT_RESTART:
+ case MT_RESTART_ACKNOWLEDGE:
+ case MT_CONGESTION_CONTROL:
+ case MT_STATUS:
+ case MT_STATUS_ENQUIRY:
+ if (pc->debug & L3_DEB_CHECK)
+ l3_debug(pc->st, "l3dss1_check_messagetype_validity mt(%x) OK", mt);
+ break;
+ case MT_RESUME: /* RESUME only in user->net */
+ case MT_SUSPEND: /* SUSPEND only in user->net */
+ default:
+ if (pc->debug & (L3_DEB_CHECK | L3_DEB_WARN))
+ l3_debug(pc->st, "l3dss1_check_messagetype_validity mt(%x) fail", mt);
+ pc->para.cause = 97;
+ l3dss1_status_send(pc, 0, NULL);
+ return (1);
+ }
+ return (0);
+}
+
+static void
+l3dss1_std_ie_err(struct l3_process *pc, int ret) {
+
+ if (pc->debug & L3_DEB_CHECK)
+ l3_debug(pc->st, "check_infoelements ret %d", ret);
+ switch (ret) {
+ case 0:
+ break;
+ case ERR_IE_COMPREHENSION:
+ pc->para.cause = 96;
+ l3dss1_status_send(pc, 0, NULL);
+ break;
+ case ERR_IE_UNRECOGNIZED:
+ pc->para.cause = 99;
+ l3dss1_status_send(pc, 0, NULL);
+ break;
+ case ERR_IE_LENGTH:
+ pc->para.cause = 100;
+ l3dss1_status_send(pc, 0, NULL);
+ break;
+ case ERR_IE_SEQUENCE:
+ default:
+ break;
+ }
+}
+
+static int
+l3dss1_get_channel_id(struct l3_process *pc, struct sk_buff *skb) {
+ u_char *p;
+
+ p = skb->data;
+ if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) {
+ p++;
+ if (*p != 1) { /* len for BRI = 1 */
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "wrong chid len %d", *p);
+ return (-2);
+ }
+ p++;
+ if (*p & 0x60) { /* only base rate interface */
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "wrong chid %x", *p);
+ return (-3);
+ }
+ return (*p & 0x3);
+ } else
+ return (-1);
+}
+
+static int
+l3dss1_get_cause(struct l3_process *pc, struct sk_buff *skb) {
+ u_char l, i = 0;
+ u_char *p;
+
+ p = skb->data;
+ pc->para.cause = 31;
+ pc->para.loc = 0;
+ if ((p = findie(p, skb->len, IE_CAUSE, 0))) {
+ p++;
+ l = *p++;
+ if (l > 30)
+ return (1);
+ if (l) {
+ pc->para.loc = *p++;
+ l--;
+ } else {
+ return (2);
+ }
+ if (l && !(pc->para.loc & 0x80)) {
+ l--;
+ p++; /* skip recommendation */
+ }
+ if (l) {
+ pc->para.cause = *p++;
+ l--;
+ if (!(pc->para.cause & 0x80))
+ return (3);
+ } else
+ return (4);
+ while (l && (i < 6)) {
+ pc->para.diag[i++] = *p++;
+ l--;
+ }
+ } else
+ return (-1);
+ return (0);
+}
+
+static void
+l3dss1_msg_with_uus(struct l3_process *pc, u_char cmd)
+{
+ struct sk_buff *skb;
+ u_char tmp[16 + 40];
+ u_char *p = tmp;
+ int l;
+
+ MsgHead(p, pc->callref, cmd);
+
+ if (pc->prot.dss1.uus1_data[0])
+ { *p++ = IE_USER_USER; /* UUS info element */
+ *p++ = strlen(pc->prot.dss1.uus1_data) + 1;
+ *p++ = 0x04; /* IA5 chars */
+ strcpy(p, pc->prot.dss1.uus1_data);
+ p += strlen(pc->prot.dss1.uus1_data);
+ pc->prot.dss1.uus1_data[0] = '\0';
+ }
+
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+} /* l3dss1_msg_with_uus */
+
+static void
+l3dss1_release_req(struct l3_process *pc, u_char pr, void *arg)
+{
+ StopAllL3Timer(pc);
+ newl3state(pc, 19);
+ if (!pc->prot.dss1.uus1_data[0])
+ l3dss1_message(pc, MT_RELEASE);
+ else
+ l3dss1_msg_with_uus(pc, MT_RELEASE);
+ L3AddTimer(&pc->timer, T308, CC_T308_1);
+}
+
+static void
+l3dss1_release_cmpl(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int ret;
+
+ if ((ret = l3dss1_get_cause(pc, skb)) > 0) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "RELCMPL get_cause ret(%d)", ret);
+ } else if (ret < 0)
+ pc->para.cause = NO_CAUSE;
+ StopAllL3Timer(pc);
+ newl3state(pc, 0);
+ pc->st->l3.l3l4(pc->st, CC_RELEASE | CONFIRM, pc);
+ dss1_release_l3_process(pc);
+}
+
+#ifdef EXT_BEARER_CAPS
+
+static u_char *
+EncodeASyncParams(u_char *p, u_char si2)
+{ // 7c 06 88 90 21 42 00 bb
+
+ p[0] = 0;
+ p[1] = 0x40; // Intermediate rate: 16 kbit/s jj 2000.02.19
+ p[2] = 0x80;
+ if (si2 & 32) // 7 data bits
+
+ p[2] += 16;
+ else // 8 data bits
+
+ p[2] += 24;
+
+ if (si2 & 16) // 2 stop bits
+
+ p[2] += 96;
+ else // 1 stop bit
+
+ p[2] += 32;
+
+ if (si2 & 8) // even parity
+
+ p[2] += 2;
+ else // no parity
+
+ p[2] += 3;
+
+ switch (si2 & 0x07) {
+ case 0:
+ p[0] = 66; // 1200 bit/s
+
+ break;
+ case 1:
+ p[0] = 88; // 1200/75 bit/s
+
+ break;
+ case 2:
+ p[0] = 87; // 75/1200 bit/s
+
+ break;
+ case 3:
+ p[0] = 67; // 2400 bit/s
+
+ break;
+ case 4:
+ p[0] = 69; // 4800 bit/s
+
+ break;
+ case 5:
+ p[0] = 72; // 9600 bit/s
+
+ break;
+ case 6:
+ p[0] = 73; // 14400 bit/s
+
+ break;
+ case 7:
+ p[0] = 75; // 19200 bit/s
+
+ break;
+ }
+ return p + 3;
+}
+
+static u_char
+EncodeSyncParams(u_char si2, u_char ai)
+{
+
+ switch (si2) {
+ case 0:
+ return ai + 2; // 1200 bit/s
+
+ case 1:
+ return ai + 24; // 1200/75 bit/s
+
+ case 2:
+ return ai + 23; // 75/1200 bit/s
+
+ case 3:
+ return ai + 3; // 2400 bit/s
+
+ case 4:
+ return ai + 5; // 4800 bit/s
+
+ case 5:
+ return ai + 8; // 9600 bit/s
+
+ case 6:
+ return ai + 9; // 14400 bit/s
+
+ case 7:
+ return ai + 11; // 19200 bit/s
+
+ case 8:
+ return ai + 14; // 48000 bit/s
+
+ case 9:
+ return ai + 15; // 56000 bit/s
+
+ case 15:
+ return ai + 40; // negotiate bit/s
+
+ default:
+ break;
+ }
+ return ai;
+}
+
+
+static u_char
+DecodeASyncParams(u_char si2, u_char *p)
+{
+ u_char info;
+
+ switch (p[5]) {
+ case 66: // 1200 bit/s
+
+ break; // si2 don't change
+
+ case 88: // 1200/75 bit/s
+
+ si2 += 1;
+ break;
+ case 87: // 75/1200 bit/s
+
+ si2 += 2;
+ break;
+ case 67: // 2400 bit/s
+
+ si2 += 3;
+ break;
+ case 69: // 4800 bit/s
+
+ si2 += 4;
+ break;
+ case 72: // 9600 bit/s
+
+ si2 += 5;
+ break;
+ case 73: // 14400 bit/s
+
+ si2 += 6;
+ break;
+ case 75: // 19200 bit/s
+
+ si2 += 7;
+ break;
+ }
+
+ info = p[7] & 0x7f;
+ if ((info & 16) && (!(info & 8))) // 7 data bits
+
+ si2 += 32; // else 8 data bits
+
+ if ((info & 96) == 96) // 2 stop bits
+
+ si2 += 16; // else 1 stop bit
+
+ if ((info & 2) && (!(info & 1))) // even parity
+
+ si2 += 8; // else no parity
+
+ return si2;
+}
+
+
+static u_char
+DecodeSyncParams(u_char si2, u_char info)
+{
+ info &= 0x7f;
+ switch (info) {
+ case 40: // bit/s negotiation failed ai := 165 not 175!
+
+ return si2 + 15;
+ case 15: // 56000 bit/s failed, ai := 0 not 169 !
+
+ return si2 + 9;
+ case 14: // 48000 bit/s
+
+ return si2 + 8;
+ case 11: // 19200 bit/s
+
+ return si2 + 7;
+ case 9: // 14400 bit/s
+
+ return si2 + 6;
+ case 8: // 9600 bit/s
+
+ return si2 + 5;
+ case 5: // 4800 bit/s
+
+ return si2 + 4;
+ case 3: // 2400 bit/s
+
+ return si2 + 3;
+ case 23: // 75/1200 bit/s
+
+ return si2 + 2;
+ case 24: // 1200/75 bit/s
+
+ return si2 + 1;
+ default: // 1200 bit/s
+
+ return si2;
+ }
+}
+
+static u_char
+DecodeSI2(struct sk_buff *skb)
+{
+ u_char *p; //, *pend=skb->data + skb->len;
+
+ if ((p = findie(skb->data, skb->len, 0x7c, 0))) {
+ switch (p[4] & 0x0f) {
+ case 0x01:
+ if (p[1] == 0x04) // sync. Bitratenadaption
+
+ return DecodeSyncParams(160, p[5]); // V.110/X.30
+
+ else if (p[1] == 0x06) // async. Bitratenadaption
+
+ return DecodeASyncParams(192, p); // V.110/X.30
+
+ break;
+ case 0x08: // if (p[5] == 0x02) // sync. Bitratenadaption
+ if (p[1] > 3)
+ return DecodeSyncParams(176, p[5]); // V.120
+ break;
+ }
+ }
+ return 0;
+}
+
+#endif
+
+
+static void
+l3dss1_setup_req(struct l3_process *pc, u_char pr,
+ void *arg)
+{
+ struct sk_buff *skb;
+ u_char tmp[128];
+ u_char *p = tmp;
+ u_char channel = 0;
+
+ u_char send_keypad;
+ u_char screen = 0x80;
+ u_char *teln;
+ u_char *msn;
+ u_char *sub;
+ u_char *sp;
+ int l;
+
+ MsgHead(p, pc->callref, MT_SETUP);
+
+ teln = pc->para.setup.phone;
+#ifndef CONFIG_HISAX_NO_KEYPAD
+ send_keypad = (strchr(teln, '*') || strchr(teln, '#')) ? 1 : 0;
+#else
+ send_keypad = 0;
+#endif
+#ifndef CONFIG_HISAX_NO_SENDCOMPLETE
+ if (!send_keypad)
+ *p++ = 0xa1; /* complete indicator */
+#endif
+ /*
+ * Set Bearer Capability, Map info from 1TR6-convention to EDSS1
+ */
+ switch (pc->para.setup.si1) {
+ case 1: /* Telephony */
+ *p++ = IE_BEARER;
+ *p++ = 0x3; /* Length */
+ *p++ = 0x90; /* Coding Std. CCITT, 3.1 kHz audio */
+ *p++ = 0x90; /* Circuit-Mode 64kbps */
+ *p++ = 0xa3; /* A-Law Audio */
+ break;
+ case 5: /* Datatransmission 64k, BTX */
+ case 7: /* Datatransmission 64k */
+ default:
+ *p++ = IE_BEARER;
+ *p++ = 0x2; /* Length */
+ *p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */
+ *p++ = 0x90; /* Circuit-Mode 64kbps */
+ break;
+ }
+
+ if (send_keypad) {
+ *p++ = IE_KEYPAD;
+ *p++ = strlen(teln);
+ while (*teln)
+ *p++ = (*teln++) & 0x7F;
+ }
+
+ /*
+ * What about info2? Mapping to High-Layer-Compatibility?
+ */
+ if ((*teln) && (!send_keypad)) {
+ /* parse number for special things */
+ if (!isdigit(*teln)) {
+ switch (0x5f & *teln) {
+ case 'C':
+ channel = 0x08;
+ case 'P':
+ channel |= 0x80;
+ teln++;
+ if (*teln == '1')
+ channel |= 0x01;
+ else
+ channel |= 0x02;
+ break;
+ case 'R':
+ screen = 0xA0;
+ break;
+ case 'D':
+ screen = 0x80;
+ break;
+
+ default:
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "Wrong MSN Code");
+ break;
+ }
+ teln++;
+ }
+ }
+ if (channel) {
+ *p++ = IE_CHANNEL_ID;
+ *p++ = 1;
+ *p++ = channel;
+ }
+ msn = pc->para.setup.eazmsn;
+ sub = NULL;
+ sp = msn;
+ while (*sp) {
+ if ('.' == *sp) {
+ sub = sp;
+ *sp = 0;
+ } else
+ sp++;
+ }
+ if (*msn) {
+ *p++ = IE_CALLING_PN;
+ *p++ = strlen(msn) + (screen ? 2 : 1);
+ /* Classify as AnyPref. */
+ if (screen) {
+ *p++ = 0x01; /* Ext = '0'B, Type = '000'B, Plan = '0001'B. */
+ *p++ = screen;
+ } else
+ *p++ = 0x81; /* Ext = '1'B, Type = '000'B, Plan = '0001'B. */
+ while (*msn)
+ *p++ = *msn++ & 0x7f;
+ }
+ if (sub) {
+ *sub++ = '.';
+ *p++ = IE_CALLING_SUB;
+ *p++ = strlen(sub) + 2;
+ *p++ = 0x80; /* NSAP coded */
+ *p++ = 0x50; /* local IDI format */
+ while (*sub)
+ *p++ = *sub++ & 0x7f;
+ }
+ sub = NULL;
+ sp = teln;
+ while (*sp) {
+ if ('.' == *sp) {
+ sub = sp;
+ *sp = 0;
+ } else
+ sp++;
+ }
+
+ if (!send_keypad) {
+ *p++ = IE_CALLED_PN;
+ *p++ = strlen(teln) + 1;
+ /* Classify as AnyPref. */
+ *p++ = 0x81; /* Ext = '1'B, Type = '000'B, Plan = '0001'B. */
+ while (*teln)
+ *p++ = *teln++ & 0x7f;
+
+ if (sub) {
+ *sub++ = '.';
+ *p++ = IE_CALLED_SUB;
+ *p++ = strlen(sub) + 2;
+ *p++ = 0x80; /* NSAP coded */
+ *p++ = 0x50; /* local IDI format */
+ while (*sub)
+ *p++ = *sub++ & 0x7f;
+ }
+ }
+#ifdef EXT_BEARER_CAPS
+ if ((pc->para.setup.si2 >= 160) && (pc->para.setup.si2 <= 175)) { // sync. Bitratenadaption, V.110/X.30
+
+ *p++ = IE_LLC;
+ *p++ = 0x04;
+ *p++ = 0x88;
+ *p++ = 0x90;
+ *p++ = 0x21;
+ *p++ = EncodeSyncParams(pc->para.setup.si2 - 160, 0x80);
+ } else if ((pc->para.setup.si2 >= 176) && (pc->para.setup.si2 <= 191)) { // sync. Bitratenadaption, V.120
+
+ *p++ = IE_LLC;
+ *p++ = 0x05;
+ *p++ = 0x88;
+ *p++ = 0x90;
+ *p++ = 0x28;
+ *p++ = EncodeSyncParams(pc->para.setup.si2 - 176, 0);
+ *p++ = 0x82;
+ } else if (pc->para.setup.si2 >= 192) { // async. Bitratenadaption, V.110/X.30
+
+ *p++ = IE_LLC;
+ *p++ = 0x06;
+ *p++ = 0x88;
+ *p++ = 0x90;
+ *p++ = 0x21;
+ p = EncodeASyncParams(p, pc->para.setup.si2 - 192);
+#ifndef CONFIG_HISAX_NO_LLC
+ } else {
+ switch (pc->para.setup.si1) {
+ case 1: /* Telephony */
+ *p++ = IE_LLC;
+ *p++ = 0x3; /* Length */
+ *p++ = 0x90; /* Coding Std. CCITT, 3.1 kHz audio */
+ *p++ = 0x90; /* Circuit-Mode 64kbps */
+ *p++ = 0xa3; /* A-Law Audio */
+ break;
+ case 5: /* Datatransmission 64k, BTX */
+ case 7: /* Datatransmission 64k */
+ default:
+ *p++ = IE_LLC;
+ *p++ = 0x2; /* Length */
+ *p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */
+ *p++ = 0x90; /* Circuit-Mode 64kbps */
+ break;
+ }
+#endif
+ }
+#endif
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ L3DelTimer(&pc->timer);
+ L3AddTimer(&pc->timer, T303, CC_T303);
+ newl3state(pc, 1);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+}
+
+static void
+l3dss1_call_proc(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int id, ret;
+
+ if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) {
+ if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "setup answer with wrong chid %x", id);
+ pc->para.cause = 100;
+ l3dss1_status_send(pc, pr, NULL);
+ return;
+ }
+ pc->para.bchannel = id;
+ } else if (1 == pc->state) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "setup answer wrong chid (ret %d)", id);
+ if (id == -1)
+ pc->para.cause = 96;
+ else
+ pc->para.cause = 100;
+ l3dss1_status_send(pc, pr, NULL);
+ return;
+ }
+ /* Now we are on none mandatory IEs */
+ ret = check_infoelements(pc, skb, ie_CALL_PROCEEDING);
+ if (ERR_IE_COMPREHENSION == ret) {
+ l3dss1_std_ie_err(pc, ret);
+ return;
+ }
+ L3DelTimer(&pc->timer);
+ newl3state(pc, 3);
+ L3AddTimer(&pc->timer, T310, CC_T310);
+ if (ret) /* STATUS for none mandatory IE errors after actions are taken */
+ l3dss1_std_ie_err(pc, ret);
+ pc->st->l3.l3l4(pc->st, CC_PROCEEDING | INDICATION, pc);
+}
+
+static void
+l3dss1_setup_ack(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int id, ret;
+
+ if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) {
+ if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "setup answer with wrong chid %x", id);
+ pc->para.cause = 100;
+ l3dss1_status_send(pc, pr, NULL);
+ return;
+ }
+ pc->para.bchannel = id;
+ } else {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "setup answer wrong chid (ret %d)", id);
+ if (id == -1)
+ pc->para.cause = 96;
+ else
+ pc->para.cause = 100;
+ l3dss1_status_send(pc, pr, NULL);
+ return;
+ }
+ /* Now we are on none mandatory IEs */
+ ret = check_infoelements(pc, skb, ie_SETUP_ACKNOWLEDGE);
+ if (ERR_IE_COMPREHENSION == ret) {
+ l3dss1_std_ie_err(pc, ret);
+ return;
+ }
+ L3DelTimer(&pc->timer);
+ newl3state(pc, 2);
+ L3AddTimer(&pc->timer, T304, CC_T304);
+ if (ret) /* STATUS for none mandatory IE errors after actions are taken */
+ l3dss1_std_ie_err(pc, ret);
+ pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc);
+}
+
+static void
+l3dss1_disconnect(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ u_char *p;
+ int ret;
+ u_char cause = 0;
+
+ StopAllL3Timer(pc);
+ if ((ret = l3dss1_get_cause(pc, skb))) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "DISC get_cause ret(%d)", ret);
+ if (ret < 0)
+ cause = 96;
+ else if (ret > 0)
+ cause = 100;
+ }
+ if ((p = findie(skb->data, skb->len, IE_FACILITY, 0)))
+ l3dss1_parse_facility(pc->st, pc, pc->callref, p);
+ ret = check_infoelements(pc, skb, ie_DISCONNECT);
+ if (ERR_IE_COMPREHENSION == ret)
+ cause = 96;
+ else if ((!cause) && (ERR_IE_UNRECOGNIZED == ret))
+ cause = 99;
+ ret = pc->state;
+ newl3state(pc, 12);
+ if (cause)
+ newl3state(pc, 19);
+ if (11 != ret)
+ pc->st->l3.l3l4(pc->st, CC_DISCONNECT | INDICATION, pc);
+ else if (!cause)
+ l3dss1_release_req(pc, pr, NULL);
+ if (cause) {
+ l3dss1_message_cause(pc, MT_RELEASE, cause);
+ L3AddTimer(&pc->timer, T308, CC_T308_1);
+ }
+}
+
+static void
+l3dss1_connect(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int ret;
+
+ ret = check_infoelements(pc, skb, ie_CONNECT);
+ if (ERR_IE_COMPREHENSION == ret) {
+ l3dss1_std_ie_err(pc, ret);
+ return;
+ }
+ L3DelTimer(&pc->timer); /* T310 */
+ newl3state(pc, 10);
+ pc->para.chargeinfo = 0;
+ /* here should inserted COLP handling KKe */
+ if (ret)
+ l3dss1_std_ie_err(pc, ret);
+ pc->st->l3.l3l4(pc->st, CC_SETUP | CONFIRM, pc);
+}
+
+static void
+l3dss1_alerting(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int ret;
+
+ ret = check_infoelements(pc, skb, ie_ALERTING);
+ if (ERR_IE_COMPREHENSION == ret) {
+ l3dss1_std_ie_err(pc, ret);
+ return;
+ }
+ L3DelTimer(&pc->timer); /* T304 */
+ newl3state(pc, 4);
+ if (ret)
+ l3dss1_std_ie_err(pc, ret);
+ pc->st->l3.l3l4(pc->st, CC_ALERTING | INDICATION, pc);
+}
+
+static void
+l3dss1_setup(struct l3_process *pc, u_char pr, void *arg)
+{
+ u_char *p;
+ int bcfound = 0;
+ char tmp[80];
+ struct sk_buff *skb = arg;
+ int id;
+ int err = 0;
+
+ /*
+ * Bearer Capabilities
+ */
+ p = skb->data;
+ /* only the first occurrence 'll be detected ! */
+ if ((p = findie(p, skb->len, 0x04, 0))) {
+ if ((p[1] < 2) || (p[1] > 11))
+ err = 1;
+ else {
+ pc->para.setup.si2 = 0;
+ switch (p[2] & 0x7f) {
+ case 0x00: /* Speech */
+ case 0x10: /* 3.1 Khz audio */
+ pc->para.setup.si1 = 1;
+ break;
+ case 0x08: /* Unrestricted digital information */
+ pc->para.setup.si1 = 7;
+/* JIM, 05.11.97 I wanna set service indicator 2 */
+#ifdef EXT_BEARER_CAPS
+ pc->para.setup.si2 = DecodeSI2(skb);
+#endif
+ break;
+ case 0x09: /* Restricted digital information */
+ pc->para.setup.si1 = 2;
+ break;
+ case 0x11:
+ /* Unrestr. digital information with
+ * tones/announcements ( or 7 kHz audio
+ */
+ pc->para.setup.si1 = 3;
+ break;
+ case 0x18: /* Video */
+ pc->para.setup.si1 = 4;
+ break;
+ default:
+ err = 2;
+ break;
+ }
+ switch (p[3] & 0x7f) {
+ case 0x40: /* packed mode */
+ pc->para.setup.si1 = 8;
+ break;
+ case 0x10: /* 64 kbit */
+ case 0x11: /* 2*64 kbit */
+ case 0x13: /* 384 kbit */
+ case 0x15: /* 1536 kbit */
+ case 0x17: /* 1920 kbit */
+ pc->para.moderate = p[3] & 0x7f;
+ break;
+ default:
+ err = 3;
+ break;
+ }
+ }
+ if (pc->debug & L3_DEB_SI)
+ l3_debug(pc->st, "SI=%d, AI=%d",
+ pc->para.setup.si1, pc->para.setup.si2);
+ if (err) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "setup with wrong bearer(l=%d:%x,%x)",
+ p[1], p[2], p[3]);
+ pc->para.cause = 100;
+ l3dss1_msg_without_setup(pc, pr, NULL);
+ return;
+ }
+ } else {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "setup without bearer capabilities");
+ /* ETS 300-104 1.3.3 */
+ pc->para.cause = 96;
+ l3dss1_msg_without_setup(pc, pr, NULL);
+ return;
+ }
+ /*
+ * Channel Identification
+ */
+ if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) {
+ if ((pc->para.bchannel = id)) {
+ if ((3 == id) && (0x10 == pc->para.moderate)) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "setup with wrong chid %x",
+ id);
+ pc->para.cause = 100;
+ l3dss1_msg_without_setup(pc, pr, NULL);
+ return;
+ }
+ bcfound++;
+ } else
+ { if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "setup without bchannel, call waiting");
+ bcfound++;
+ }
+ } else {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "setup with wrong chid ret %d", id);
+ if (id == -1)
+ pc->para.cause = 96;
+ else
+ pc->para.cause = 100;
+ l3dss1_msg_without_setup(pc, pr, NULL);
+ return;
+ }
+ /* Now we are on none mandatory IEs */
+ err = check_infoelements(pc, skb, ie_SETUP);
+ if (ERR_IE_COMPREHENSION == err) {
+ pc->para.cause = 96;
+ l3dss1_msg_without_setup(pc, pr, NULL);
+ return;
+ }
+ p = skb->data;
+ if ((p = findie(p, skb->len, 0x70, 0)))
+ iecpy(pc->para.setup.eazmsn, p, 1);
+ else
+ pc->para.setup.eazmsn[0] = 0;
+
+ p = skb->data;
+ if ((p = findie(p, skb->len, 0x71, 0))) {
+ /* Called party subaddress */
+ if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) {
+ tmp[0] = '.';
+ iecpy(&tmp[1], p, 2);
+ strcat(pc->para.setup.eazmsn, tmp);
+ } else if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "wrong called subaddress");
+ }
+ p = skb->data;
+ if ((p = findie(p, skb->len, 0x6c, 0))) {
+ pc->para.setup.plan = p[2];
+ if (p[2] & 0x80) {
+ iecpy(pc->para.setup.phone, p, 1);
+ pc->para.setup.screen = 0;
+ } else {
+ iecpy(pc->para.setup.phone, p, 2);
+ pc->para.setup.screen = p[3];
+ }
+ } else {
+ pc->para.setup.phone[0] = 0;
+ pc->para.setup.plan = 0;
+ pc->para.setup.screen = 0;
+ }
+ p = skb->data;
+ if ((p = findie(p, skb->len, 0x6d, 0))) {
+ /* Calling party subaddress */
+ if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) {
+ tmp[0] = '.';
+ iecpy(&tmp[1], p, 2);
+ strcat(pc->para.setup.phone, tmp);
+ } else if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "wrong calling subaddress");
+ }
+ newl3state(pc, 6);
+ if (err) /* STATUS for none mandatory IE errors after actions are taken */
+ l3dss1_std_ie_err(pc, err);
+ pc->st->l3.l3l4(pc->st, CC_SETUP | INDICATION, pc);
+}
+
+static void
+l3dss1_reset(struct l3_process *pc, u_char pr, void *arg)
+{
+ dss1_release_l3_process(pc);
+}
+
+static void
+l3dss1_disconnect_req(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb;
+ u_char tmp[16 + 40];
+ u_char *p = tmp;
+ int l;
+ u_char cause = 16;
+
+ if (pc->para.cause != NO_CAUSE)
+ cause = pc->para.cause;
+
+ StopAllL3Timer(pc);
+
+ MsgHead(p, pc->callref, MT_DISCONNECT);
+
+ *p++ = IE_CAUSE;
+ *p++ = 0x2;
+ *p++ = 0x80;
+ *p++ = cause | 0x80;
+
+ if (pc->prot.dss1.uus1_data[0])
+ { *p++ = IE_USER_USER; /* UUS info element */
+ *p++ = strlen(pc->prot.dss1.uus1_data) + 1;
+ *p++ = 0x04; /* IA5 chars */
+ strcpy(p, pc->prot.dss1.uus1_data);
+ p += strlen(pc->prot.dss1.uus1_data);
+ pc->prot.dss1.uus1_data[0] = '\0';
+ }
+
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ newl3state(pc, 11);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+ L3AddTimer(&pc->timer, T305, CC_T305);
+}
+
+static void
+l3dss1_setup_rsp(struct l3_process *pc, u_char pr,
+ void *arg)
+{
+ if (!pc->para.bchannel)
+ { if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "D-chan connect for waiting call");
+ l3dss1_disconnect_req(pc, pr, arg);
+ return;
+ }
+ newl3state(pc, 8);
+ l3dss1_message(pc, MT_CONNECT);
+ L3DelTimer(&pc->timer);
+ L3AddTimer(&pc->timer, T313, CC_T313);
+}
+
+static void
+l3dss1_connect_ack(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int ret;
+
+ ret = check_infoelements(pc, skb, ie_CONNECT_ACKNOWLEDGE);
+ if (ERR_IE_COMPREHENSION == ret) {
+ l3dss1_std_ie_err(pc, ret);
+ return;
+ }
+ newl3state(pc, 10);
+ L3DelTimer(&pc->timer);
+ if (ret)
+ l3dss1_std_ie_err(pc, ret);
+ pc->st->l3.l3l4(pc->st, CC_SETUP_COMPL | INDICATION, pc);
+}
+
+static void
+l3dss1_reject_req(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb;
+ u_char tmp[16];
+ u_char *p = tmp;
+ int l;
+ u_char cause = 21;
+
+ if (pc->para.cause != NO_CAUSE)
+ cause = pc->para.cause;
+
+ MsgHead(p, pc->callref, MT_RELEASE_COMPLETE);
+
+ *p++ = IE_CAUSE;
+ *p++ = 0x2;
+ *p++ = 0x80;
+ *p++ = cause | 0x80;
+
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+ pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
+ newl3state(pc, 0);
+ dss1_release_l3_process(pc);
+}
+
+static void
+l3dss1_release(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ u_char *p;
+ int ret, cause = 0;
+
+ StopAllL3Timer(pc);
+ if ((ret = l3dss1_get_cause(pc, skb)) > 0) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "REL get_cause ret(%d)", ret);
+ } else if (ret < 0)
+ pc->para.cause = NO_CAUSE;
+ if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) {
+ l3dss1_parse_facility(pc->st, pc, pc->callref, p);
+ }
+ if ((ret < 0) && (pc->state != 11))
+ cause = 96;
+ else if (ret > 0)
+ cause = 100;
+ ret = check_infoelements(pc, skb, ie_RELEASE);
+ if (ERR_IE_COMPREHENSION == ret)
+ cause = 96;
+ else if ((ERR_IE_UNRECOGNIZED == ret) && (!cause))
+ cause = 99;
+ if (cause)
+ l3dss1_message_cause(pc, MT_RELEASE_COMPLETE, cause);
+ else
+ l3dss1_message(pc, MT_RELEASE_COMPLETE);
+ pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
+ newl3state(pc, 0);
+ dss1_release_l3_process(pc);
+}
+
+static void
+l3dss1_alert_req(struct l3_process *pc, u_char pr,
+ void *arg)
+{
+ newl3state(pc, 7);
+ if (!pc->prot.dss1.uus1_data[0])
+ l3dss1_message(pc, MT_ALERTING);
+ else
+ l3dss1_msg_with_uus(pc, MT_ALERTING);
+}
+
+static void
+l3dss1_proceed_req(struct l3_process *pc, u_char pr,
+ void *arg)
+{
+ newl3state(pc, 9);
+ l3dss1_message(pc, MT_CALL_PROCEEDING);
+ pc->st->l3.l3l4(pc->st, CC_PROCEED_SEND | INDICATION, pc);
+}
+
+static void
+l3dss1_setup_ack_req(struct l3_process *pc, u_char pr,
+ void *arg)
+{
+ newl3state(pc, 25);
+ L3DelTimer(&pc->timer);
+ L3AddTimer(&pc->timer, T302, CC_T302);
+ l3dss1_message(pc, MT_SETUP_ACKNOWLEDGE);
+}
+
+/********************************************/
+/* deliver a incoming display message to HL */
+/********************************************/
+static void
+l3dss1_deliver_display(struct l3_process *pc, int pr, u_char *infp)
+{ u_char len;
+ isdn_ctrl ic;
+ struct IsdnCardState *cs;
+ char *p;
+
+ if (*infp++ != IE_DISPLAY) return;
+ if ((len = *infp++) > 80) return; /* total length <= 82 */
+ if (!pc->chan) return;
+
+ p = ic.parm.display;
+ while (len--)
+ *p++ = *infp++;
+ *p = '\0';
+ ic.command = ISDN_STAT_DISPLAY;
+ cs = pc->st->l1.hardware;
+ ic.driver = cs->myid;
+ ic.arg = pc->chan->chan;
+ cs->iif.statcallb(&ic);
+} /* l3dss1_deliver_display */
+
+
+static void
+l3dss1_progress(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int err = 0;
+ u_char *p;
+
+ if ((p = findie(skb->data, skb->len, IE_PROGRESS, 0))) {
+ if (p[1] != 2) {
+ err = 1;
+ pc->para.cause = 100;
+ } else if (!(p[2] & 0x70)) {
+ switch (p[2]) {
+ case 0x80:
+ case 0x81:
+ case 0x82:
+ case 0x84:
+ case 0x85:
+ case 0x87:
+ case 0x8a:
+ switch (p[3]) {
+ case 0x81:
+ case 0x82:
+ case 0x83:
+ case 0x84:
+ case 0x88:
+ break;
+ default:
+ err = 2;
+ pc->para.cause = 100;
+ break;
+ }
+ break;
+ default:
+ err = 3;
+ pc->para.cause = 100;
+ break;
+ }
+ }
+ } else {
+ pc->para.cause = 96;
+ err = 4;
+ }
+ if (err) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "progress error %d", err);
+ l3dss1_status_send(pc, pr, NULL);
+ return;
+ }
+ /* Now we are on none mandatory IEs */
+ err = check_infoelements(pc, skb, ie_PROGRESS);
+ if (err)
+ l3dss1_std_ie_err(pc, err);
+ if (ERR_IE_COMPREHENSION != err)
+ pc->st->l3.l3l4(pc->st, CC_PROGRESS | INDICATION, pc);
+}
+
+static void
+l3dss1_notify(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int err = 0;
+ u_char *p;
+
+ if ((p = findie(skb->data, skb->len, IE_NOTIFY, 0))) {
+ if (p[1] != 1) {
+ err = 1;
+ pc->para.cause = 100;
+ } else {
+ switch (p[2]) {
+ case 0x80:
+ case 0x81:
+ case 0x82:
+ break;
+ default:
+ pc->para.cause = 100;
+ err = 2;
+ break;
+ }
+ }
+ } else {
+ pc->para.cause = 96;
+ err = 3;
+ }
+ if (err) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "notify error %d", err);
+ l3dss1_status_send(pc, pr, NULL);
+ return;
+ }
+ /* Now we are on none mandatory IEs */
+ err = check_infoelements(pc, skb, ie_NOTIFY);
+ if (err)
+ l3dss1_std_ie_err(pc, err);
+ if (ERR_IE_COMPREHENSION != err)
+ pc->st->l3.l3l4(pc->st, CC_NOTIFY | INDICATION, pc);
+}
+
+static void
+l3dss1_status_enq(struct l3_process *pc, u_char pr, void *arg)
+{
+ int ret;
+ struct sk_buff *skb = arg;
+
+ ret = check_infoelements(pc, skb, ie_STATUS_ENQUIRY);
+ l3dss1_std_ie_err(pc, ret);
+ pc->para.cause = 30; /* response to STATUS_ENQUIRY */
+ l3dss1_status_send(pc, pr, NULL);
+}
+
+static void
+l3dss1_information(struct l3_process *pc, u_char pr, void *arg)
+{
+ int ret;
+ struct sk_buff *skb = arg;
+ u_char *p;
+ char tmp[32];
+
+ ret = check_infoelements(pc, skb, ie_INFORMATION);
+ if (ret)
+ l3dss1_std_ie_err(pc, ret);
+ if (pc->state == 25) { /* overlap receiving */
+ L3DelTimer(&pc->timer);
+ p = skb->data;
+ if ((p = findie(p, skb->len, 0x70, 0))) {
+ iecpy(tmp, p, 1);
+ strcat(pc->para.setup.eazmsn, tmp);
+ pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc);
+ }
+ L3AddTimer(&pc->timer, T302, CC_T302);
+ }
+}
+
+/******************************/
+/* handle deflection requests */
+/******************************/
+static void l3dss1_redir_req(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb;
+ u_char tmp[128];
+ u_char *p = tmp;
+ u_char *subp;
+ u_char len_phone = 0;
+ u_char len_sub = 0;
+ int l;
+
+
+ strcpy(pc->prot.dss1.uus1_data, pc->chan->setup.eazmsn); /* copy uus element if available */
+ if (!pc->chan->setup.phone[0])
+ { pc->para.cause = -1;
+ l3dss1_disconnect_req(pc, pr, arg); /* disconnect immediately */
+ return;
+ } /* only uus */
+
+ if (pc->prot.dss1.invoke_id)
+ free_invoke_id(pc->st, pc->prot.dss1.invoke_id);
+
+ if (!(pc->prot.dss1.invoke_id = new_invoke_id(pc->st)))
+ return;
+
+ MsgHead(p, pc->callref, MT_FACILITY);
+
+ for (subp = pc->chan->setup.phone; (*subp) && (*subp != '.'); subp++) len_phone++; /* len of phone number */
+ if (*subp++ == '.') len_sub = strlen(subp) + 2; /* length including info subaddress element */
+
+ *p++ = 0x1c; /* Facility info element */
+ *p++ = len_phone + len_sub + 2 + 2 + 8 + 3 + 3; /* length of element */
+ *p++ = 0x91; /* remote operations protocol */
+ *p++ = 0xa1; /* invoke component */
+
+ *p++ = len_phone + len_sub + 2 + 2 + 8 + 3; /* length of data */
+ *p++ = 0x02; /* invoke id tag, integer */
+ *p++ = 0x01; /* length */
+ *p++ = pc->prot.dss1.invoke_id; /* invoke id */
+ *p++ = 0x02; /* operation value tag, integer */
+ *p++ = 0x01; /* length */
+ *p++ = 0x0D; /* Call Deflect */
+
+ *p++ = 0x30; /* sequence phone number */
+ *p++ = len_phone + 2 + 2 + 3 + len_sub; /* length */
+
+ *p++ = 0x30; /* Deflected to UserNumber */
+ *p++ = len_phone + 2 + len_sub; /* length */
+ *p++ = 0x80; /* NumberDigits */
+ *p++ = len_phone; /* length */
+ for (l = 0; l < len_phone; l++)
+ *p++ = pc->chan->setup.phone[l];
+
+ if (len_sub)
+ { *p++ = 0x04; /* called party subaddress */
+ *p++ = len_sub - 2;
+ while (*subp) *p++ = *subp++;
+ }
+
+ *p++ = 0x01; /* screening identifier */
+ *p++ = 0x01;
+ *p++ = pc->chan->setup.screen;
+
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l))) return;
+ memcpy(skb_put(skb, l), tmp, l);
+
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+} /* l3dss1_redir_req */
+
+/********************************************/
+/* handle deflection request in early state */
+/********************************************/
+static void l3dss1_redir_req_early(struct l3_process *pc, u_char pr, void *arg)
+{
+ l3dss1_proceed_req(pc, pr, arg);
+ l3dss1_redir_req(pc, pr, arg);
+} /* l3dss1_redir_req_early */
+
+/***********************************************/
+/* handle special commands for this protocol. */
+/* Examples are call independent services like */
+/* remote operations with dummy callref. */
+/***********************************************/
+static int l3dss1_cmd_global(struct PStack *st, isdn_ctrl *ic)
+{ u_char id;
+ u_char temp[265];
+ u_char *p = temp;
+ int i, l, proc_len;
+ struct sk_buff *skb;
+ struct l3_process *pc = NULL;
+
+ switch (ic->arg)
+ { case DSS1_CMD_INVOKE:
+ if (ic->parm.dss1_io.datalen < 0) return (-2); /* invalid parameter */
+
+ for (proc_len = 1, i = ic->parm.dss1_io.proc >> 8; i; i++)
+ i = i >> 8; /* add one byte */
+ l = ic->parm.dss1_io.datalen + proc_len + 8; /* length excluding ie header */
+ if (l > 255)
+ return (-2); /* too long */
+
+ if (!(id = new_invoke_id(st)))
+ return (0); /* first get a invoke id -> return if no available */
+
+ i = -1;
+ MsgHead(p, i, MT_FACILITY); /* build message head */
+ *p++ = 0x1C; /* Facility IE */
+ *p++ = l; /* length of ie */
+ *p++ = 0x91; /* remote operations */
+ *p++ = 0xA1; /* invoke */
+ *p++ = l - 3; /* length of invoke */
+ *p++ = 0x02; /* invoke id tag */
+ *p++ = 0x01; /* length is 1 */
+ *p++ = id; /* invoke id */
+ *p++ = 0x02; /* operation */
+ *p++ = proc_len; /* length of operation */
+
+ for (i = proc_len; i; i--)
+ *p++ = (ic->parm.dss1_io.proc >> (i - 1)) & 0xFF;
+ memcpy(p, ic->parm.dss1_io.data, ic->parm.dss1_io.datalen); /* copy data */
+ l = (p - temp) + ic->parm.dss1_io.datalen; /* total length */
+
+ if (ic->parm.dss1_io.timeout > 0)
+ if (!(pc = dss1_new_l3_process(st, -1)))
+ { free_invoke_id(st, id);
+ return (-2);
+ }
+ pc->prot.dss1.ll_id = ic->parm.dss1_io.ll_id; /* remember id */
+ pc->prot.dss1.proc = ic->parm.dss1_io.proc; /* and procedure */
+
+ if (!(skb = l3_alloc_skb(l)))
+ { free_invoke_id(st, id);
+ if (pc) dss1_release_l3_process(pc);
+ return (-2);
+ }
+ memcpy(skb_put(skb, l), temp, l);
+
+ if (pc)
+ { pc->prot.dss1.invoke_id = id; /* remember id */
+ L3AddTimer(&pc->timer, ic->parm.dss1_io.timeout, CC_TDSS1_IO | REQUEST);
+ }
+
+ l3_msg(st, DL_DATA | REQUEST, skb);
+ ic->parm.dss1_io.hl_id = id; /* return id */
+ return (0);
+
+ case DSS1_CMD_INVOKE_ABORT:
+ if ((pc = l3dss1_search_dummy_proc(st, ic->parm.dss1_io.hl_id)))
+ { L3DelTimer(&pc->timer); /* remove timer */
+ dss1_release_l3_process(pc);
+ return (0);
+ }
+ else
+ { l3_debug(st, "l3dss1_cmd_global abort unknown id");
+ return (-2);
+ }
+ break;
+
+ default:
+ l3_debug(st, "l3dss1_cmd_global unknown cmd 0x%lx", ic->arg);
+ return (-1);
+ } /* switch ic-> arg */
+ return (-1);
+} /* l3dss1_cmd_global */
+
+static void
+l3dss1_io_timer(struct l3_process *pc)
+{ isdn_ctrl ic;
+ struct IsdnCardState *cs = pc->st->l1.hardware;
+
+ L3DelTimer(&pc->timer); /* remove timer */
+
+ ic.driver = cs->myid;
+ ic.command = ISDN_STAT_PROT;
+ ic.arg = DSS1_STAT_INVOKE_ERR;
+ ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id;
+ ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id;
+ ic.parm.dss1_io.proc = pc->prot.dss1.proc;
+ ic.parm.dss1_io.timeout = -1;
+ ic.parm.dss1_io.datalen = 0;
+ ic.parm.dss1_io.data = NULL;
+ free_invoke_id(pc->st, pc->prot.dss1.invoke_id);
+ pc->prot.dss1.invoke_id = 0; /* reset id */
+
+ cs->iif.statcallb(&ic);
+
+ dss1_release_l3_process(pc);
+} /* l3dss1_io_timer */
+
+static void
+l3dss1_release_ind(struct l3_process *pc, u_char pr, void *arg)
+{
+ u_char *p;
+ struct sk_buff *skb = arg;
+ int callState = 0;
+ p = skb->data;
+
+ if ((p = findie(p, skb->len, IE_CALL_STATE, 0))) {
+ p++;
+ if (1 == *p++)
+ callState = *p;
+ }
+ if (callState == 0) {
+ /* ETS 300-104 7.6.1, 8.6.1, 10.6.1... and 16.1
+ * set down layer 3 without sending any message
+ */
+ pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
+ newl3state(pc, 0);
+ dss1_release_l3_process(pc);
+ } else {
+ pc->st->l3.l3l4(pc->st, CC_IGNORE | INDICATION, pc);
+ }
+}
+
+static void
+l3dss1_dummy(struct l3_process *pc, u_char pr, void *arg)
+{
+}
+
+static void
+l3dss1_t302(struct l3_process *pc, u_char pr, void *arg)
+{
+ L3DelTimer(&pc->timer);
+ pc->para.loc = 0;
+ pc->para.cause = 28; /* invalid number */
+ l3dss1_disconnect_req(pc, pr, NULL);
+ pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
+}
+
+static void
+l3dss1_t303(struct l3_process *pc, u_char pr, void *arg)
+{
+ if (pc->N303 > 0) {
+ pc->N303--;
+ L3DelTimer(&pc->timer);
+ l3dss1_setup_req(pc, pr, arg);
+ } else {
+ L3DelTimer(&pc->timer);
+ l3dss1_message_cause(pc, MT_RELEASE_COMPLETE, 102);
+ pc->st->l3.l3l4(pc->st, CC_NOSETUP_RSP, pc);
+ dss1_release_l3_process(pc);
+ }
+}
+
+static void
+l3dss1_t304(struct l3_process *pc, u_char pr, void *arg)
+{
+ L3DelTimer(&pc->timer);
+ pc->para.loc = 0;
+ pc->para.cause = 102;
+ l3dss1_disconnect_req(pc, pr, NULL);
+ pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
+
+}
+
+static void
+l3dss1_t305(struct l3_process *pc, u_char pr, void *arg)
+{
+ u_char tmp[16];
+ u_char *p = tmp;
+ int l;
+ struct sk_buff *skb;
+ u_char cause = 16;
+
+ L3DelTimer(&pc->timer);
+ if (pc->para.cause != NO_CAUSE)
+ cause = pc->para.cause;
+
+ MsgHead(p, pc->callref, MT_RELEASE);
+
+ *p++ = IE_CAUSE;
+ *p++ = 0x2;
+ *p++ = 0x80;
+ *p++ = cause | 0x80;
+
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ newl3state(pc, 19);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+ L3AddTimer(&pc->timer, T308, CC_T308_1);
+}
+
+static void
+l3dss1_t310(struct l3_process *pc, u_char pr, void *arg)
+{
+ L3DelTimer(&pc->timer);
+ pc->para.loc = 0;
+ pc->para.cause = 102;
+ l3dss1_disconnect_req(pc, pr, NULL);
+ pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
+}
+
+static void
+l3dss1_t313(struct l3_process *pc, u_char pr, void *arg)
+{
+ L3DelTimer(&pc->timer);
+ pc->para.loc = 0;
+ pc->para.cause = 102;
+ l3dss1_disconnect_req(pc, pr, NULL);
+ pc->st->l3.l3l4(pc->st, CC_CONNECT_ERR, pc);
+}
+
+static void
+l3dss1_t308_1(struct l3_process *pc, u_char pr, void *arg)
+{
+ newl3state(pc, 19);
+ L3DelTimer(&pc->timer);
+ l3dss1_message(pc, MT_RELEASE);
+ L3AddTimer(&pc->timer, T308, CC_T308_2);
+}
+
+static void
+l3dss1_t308_2(struct l3_process *pc, u_char pr, void *arg)
+{
+ L3DelTimer(&pc->timer);
+ pc->st->l3.l3l4(pc->st, CC_RELEASE_ERR, pc);
+ dss1_release_l3_process(pc);
+}
+
+static void
+l3dss1_t318(struct l3_process *pc, u_char pr, void *arg)
+{
+ L3DelTimer(&pc->timer);
+ pc->para.cause = 102; /* Timer expiry */
+ pc->para.loc = 0; /* local */
+ pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc);
+ newl3state(pc, 19);
+ l3dss1_message(pc, MT_RELEASE);
+ L3AddTimer(&pc->timer, T308, CC_T308_1);
+}
+
+static void
+l3dss1_t319(struct l3_process *pc, u_char pr, void *arg)
+{
+ L3DelTimer(&pc->timer);
+ pc->para.cause = 102; /* Timer expiry */
+ pc->para.loc = 0; /* local */
+ pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc);
+ newl3state(pc, 10);
+}
+
+static void
+l3dss1_restart(struct l3_process *pc, u_char pr, void *arg)
+{
+ L3DelTimer(&pc->timer);
+ pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
+ dss1_release_l3_process(pc);
+}
+
+static void
+l3dss1_status(struct l3_process *pc, u_char pr, void *arg)
+{
+ u_char *p;
+ struct sk_buff *skb = arg;
+ int ret;
+ u_char cause = 0, callState = 0;
+
+ if ((ret = l3dss1_get_cause(pc, skb))) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "STATUS get_cause ret(%d)", ret);
+ if (ret < 0)
+ cause = 96;
+ else if (ret > 0)
+ cause = 100;
+ }
+ if ((p = findie(skb->data, skb->len, IE_CALL_STATE, 0))) {
+ p++;
+ if (1 == *p++) {
+ callState = *p;
+ if (!ie_in_set(pc, *p, l3_valid_states))
+ cause = 100;
+ } else
+ cause = 100;
+ } else
+ cause = 96;
+ if (!cause) { /* no error before */
+ ret = check_infoelements(pc, skb, ie_STATUS);
+ if (ERR_IE_COMPREHENSION == ret)
+ cause = 96;
+ else if (ERR_IE_UNRECOGNIZED == ret)
+ cause = 99;
+ }
+ if (cause) {
+ u_char tmp;
+
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "STATUS error(%d/%d)", ret, cause);
+ tmp = pc->para.cause;
+ pc->para.cause = cause;
+ l3dss1_status_send(pc, 0, NULL);
+ if (cause == 99)
+ pc->para.cause = tmp;
+ else
+ return;
+ }
+ cause = pc->para.cause;
+ if (((cause & 0x7f) == 111) && (callState == 0)) {
+ /* ETS 300-104 7.6.1, 8.6.1, 10.6.1...
+ * if received MT_STATUS with cause == 111 and call
+ * state == 0, then we must set down layer 3
+ */
+ pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
+ newl3state(pc, 0);
+ dss1_release_l3_process(pc);
+ }
+}
+
+static void
+l3dss1_facility(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int ret;
+
+ ret = check_infoelements(pc, skb, ie_FACILITY);
+ l3dss1_std_ie_err(pc, ret);
+ {
+ u_char *p;
+ if ((p = findie(skb->data, skb->len, IE_FACILITY, 0)))
+ l3dss1_parse_facility(pc->st, pc, pc->callref, p);
+ }
+}
+
+static void
+l3dss1_suspend_req(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb;
+ u_char tmp[32];
+ u_char *p = tmp;
+ u_char i, l;
+ u_char *msg = pc->chan->setup.phone;
+
+ MsgHead(p, pc->callref, MT_SUSPEND);
+ l = *msg++;
+ if (l && (l <= 10)) { /* Max length 10 octets */
+ *p++ = IE_CALL_ID;
+ *p++ = l;
+ for (i = 0; i < l; i++)
+ *p++ = *msg++;
+ } else if (l) {
+ l3_debug(pc->st, "SUS wrong CALL_ID len %d", l);
+ return;
+ }
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+ newl3state(pc, 15);
+ L3AddTimer(&pc->timer, T319, CC_T319);
+}
+
+static void
+l3dss1_suspend_ack(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int ret;
+
+ L3DelTimer(&pc->timer);
+ newl3state(pc, 0);
+ pc->para.cause = NO_CAUSE;
+ pc->st->l3.l3l4(pc->st, CC_SUSPEND | CONFIRM, pc);
+ /* We don't handle suspend_ack for IE errors now */
+ if ((ret = check_infoelements(pc, skb, ie_SUSPEND_ACKNOWLEDGE)))
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "SUSPACK check ie(%d)", ret);
+ dss1_release_l3_process(pc);
+}
+
+static void
+l3dss1_suspend_rej(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int ret;
+
+ if ((ret = l3dss1_get_cause(pc, skb))) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "SUSP_REJ get_cause ret(%d)", ret);
+ if (ret < 0)
+ pc->para.cause = 96;
+ else
+ pc->para.cause = 100;
+ l3dss1_status_send(pc, pr, NULL);
+ return;
+ }
+ ret = check_infoelements(pc, skb, ie_SUSPEND_REJECT);
+ if (ERR_IE_COMPREHENSION == ret) {
+ l3dss1_std_ie_err(pc, ret);
+ return;
+ }
+ L3DelTimer(&pc->timer);
+ pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc);
+ newl3state(pc, 10);
+ if (ret) /* STATUS for none mandatory IE errors after actions are taken */
+ l3dss1_std_ie_err(pc, ret);
+}
+
+static void
+l3dss1_resume_req(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb;
+ u_char tmp[32];
+ u_char *p = tmp;
+ u_char i, l;
+ u_char *msg = pc->para.setup.phone;
+
+ MsgHead(p, pc->callref, MT_RESUME);
+
+ l = *msg++;
+ if (l && (l <= 10)) { /* Max length 10 octets */
+ *p++ = IE_CALL_ID;
+ *p++ = l;
+ for (i = 0; i < l; i++)
+ *p++ = *msg++;
+ } else if (l) {
+ l3_debug(pc->st, "RES wrong CALL_ID len %d", l);
+ return;
+ }
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+ newl3state(pc, 17);
+ L3AddTimer(&pc->timer, T318, CC_T318);
+}
+
+static void
+l3dss1_resume_ack(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int id, ret;
+
+ if ((id = l3dss1_get_channel_id(pc, skb)) > 0) {
+ if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "resume ack with wrong chid %x", id);
+ pc->para.cause = 100;
+ l3dss1_status_send(pc, pr, NULL);
+ return;
+ }
+ pc->para.bchannel = id;
+ } else if (1 == pc->state) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "resume ack without chid (ret %d)", id);
+ pc->para.cause = 96;
+ l3dss1_status_send(pc, pr, NULL);
+ return;
+ }
+ ret = check_infoelements(pc, skb, ie_RESUME_ACKNOWLEDGE);
+ if (ERR_IE_COMPREHENSION == ret) {
+ l3dss1_std_ie_err(pc, ret);
+ return;
+ }
+ L3DelTimer(&pc->timer);
+ pc->st->l3.l3l4(pc->st, CC_RESUME | CONFIRM, pc);
+ newl3state(pc, 10);
+ if (ret) /* STATUS for none mandatory IE errors after actions are taken */
+ l3dss1_std_ie_err(pc, ret);
+}
+
+static void
+l3dss1_resume_rej(struct l3_process *pc, u_char pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int ret;
+
+ if ((ret = l3dss1_get_cause(pc, skb))) {
+ if (pc->debug & L3_DEB_WARN)
+ l3_debug(pc->st, "RES_REJ get_cause ret(%d)", ret);
+ if (ret < 0)
+ pc->para.cause = 96;
+ else
+ pc->para.cause = 100;
+ l3dss1_status_send(pc, pr, NULL);
+ return;
+ }
+ ret = check_infoelements(pc, skb, ie_RESUME_REJECT);
+ if (ERR_IE_COMPREHENSION == ret) {
+ l3dss1_std_ie_err(pc, ret);
+ return;
+ }
+ L3DelTimer(&pc->timer);
+ pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc);
+ newl3state(pc, 0);
+ if (ret) /* STATUS for none mandatory IE errors after actions are taken */
+ l3dss1_std_ie_err(pc, ret);
+ dss1_release_l3_process(pc);
+}
+
+static void
+l3dss1_global_restart(struct l3_process *pc, u_char pr, void *arg)
+{
+ u_char tmp[32];
+ u_char *p;
+ u_char ri, ch = 0, chan = 0;
+ int l;
+ struct sk_buff *skb = arg;
+ struct l3_process *up;
+
+ newl3state(pc, 2);
+ L3DelTimer(&pc->timer);
+ p = skb->data;
+ if ((p = findie(p, skb->len, IE_RESTART_IND, 0))) {
+ ri = p[2];
+ l3_debug(pc->st, "Restart %x", ri);
+ } else {
+ l3_debug(pc->st, "Restart without restart IE");
+ ri = 0x86;
+ }
+ p = skb->data;
+ if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) {
+ chan = p[2] & 3;
+ ch = p[2];
+ if (pc->st->l3.debug)
+ l3_debug(pc->st, "Restart for channel %d", chan);
+ }
+ newl3state(pc, 2);
+ up = pc->st->l3.proc;
+ while (up) {
+ if ((ri & 7) == 7)
+ up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up);
+ else if (up->para.bchannel == chan)
+ up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up);
+ up = up->next;
+ }
+ p = tmp;
+ MsgHead(p, pc->callref, MT_RESTART_ACKNOWLEDGE);
+ if (chan) {
+ *p++ = IE_CHANNEL_ID;
+ *p++ = 1;
+ *p++ = ch | 0x80;
+ }
+ *p++ = 0x79; /* RESTART Ind */
+ *p++ = 1;
+ *p++ = ri;
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ newl3state(pc, 0);
+ l3_msg(pc->st, DL_DATA | REQUEST, skb);
+}
+
+static void
+l3dss1_dl_reset(struct l3_process *pc, u_char pr, void *arg)
+{
+ pc->para.cause = 0x29; /* Temporary failure */
+ pc->para.loc = 0;
+ l3dss1_disconnect_req(pc, pr, NULL);
+ pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
+}
+
+static void
+l3dss1_dl_release(struct l3_process *pc, u_char pr, void *arg)
+{
+ newl3state(pc, 0);
+ pc->para.cause = 0x1b; /* Destination out of order */
+ pc->para.loc = 0;
+ pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
+ release_l3_process(pc);
+}
+
+static void
+l3dss1_dl_reestablish(struct l3_process *pc, u_char pr, void *arg)
+{
+ L3DelTimer(&pc->timer);
+ L3AddTimer(&pc->timer, T309, CC_T309);
+ l3_msg(pc->st, DL_ESTABLISH | REQUEST, NULL);
+}
+
+static void
+l3dss1_dl_reest_status(struct l3_process *pc, u_char pr, void *arg)
+{
+ L3DelTimer(&pc->timer);
+
+ pc->para.cause = 0x1F; /* normal, unspecified */
+ l3dss1_status_send(pc, 0, NULL);
+}
+
+/* *INDENT-OFF* */
+static struct stateentry downstatelist[] =
+{
+ {SBIT(0),
+ CC_SETUP | REQUEST, l3dss1_setup_req},
+ {SBIT(0),
+ CC_RESUME | REQUEST, l3dss1_resume_req},
+ {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(25),
+ CC_DISCONNECT | REQUEST, l3dss1_disconnect_req},
+ {SBIT(12),
+ CC_RELEASE | REQUEST, l3dss1_release_req},
+ {ALL_STATES,
+ CC_RESTART | REQUEST, l3dss1_restart},
+ {SBIT(6) | SBIT(25),
+ CC_IGNORE | REQUEST, l3dss1_reset},
+ {SBIT(6) | SBIT(25),
+ CC_REJECT | REQUEST, l3dss1_reject_req},
+ {SBIT(6) | SBIT(25),
+ CC_PROCEED_SEND | REQUEST, l3dss1_proceed_req},
+ {SBIT(6),
+ CC_MORE_INFO | REQUEST, l3dss1_setup_ack_req},
+ {SBIT(25),
+ CC_MORE_INFO | REQUEST, l3dss1_dummy},
+ {SBIT(6) | SBIT(9) | SBIT(25),
+ CC_ALERTING | REQUEST, l3dss1_alert_req},
+ {SBIT(6) | SBIT(7) | SBIT(9) | SBIT(25),
+ CC_SETUP | RESPONSE, l3dss1_setup_rsp},
+ {SBIT(10),
+ CC_SUSPEND | REQUEST, l3dss1_suspend_req},
+ {SBIT(7) | SBIT(9) | SBIT(25),
+ CC_REDIR | REQUEST, l3dss1_redir_req},
+ {SBIT(6),
+ CC_REDIR | REQUEST, l3dss1_redir_req_early},
+ {SBIT(9) | SBIT(25),
+ CC_DISCONNECT | REQUEST, l3dss1_disconnect_req},
+ {SBIT(25),
+ CC_T302, l3dss1_t302},
+ {SBIT(1),
+ CC_T303, l3dss1_t303},
+ {SBIT(2),
+ CC_T304, l3dss1_t304},
+ {SBIT(3),
+ CC_T310, l3dss1_t310},
+ {SBIT(8),
+ CC_T313, l3dss1_t313},
+ {SBIT(11),
+ CC_T305, l3dss1_t305},
+ {SBIT(15),
+ CC_T319, l3dss1_t319},
+ {SBIT(17),
+ CC_T318, l3dss1_t318},
+ {SBIT(19),
+ CC_T308_1, l3dss1_t308_1},
+ {SBIT(19),
+ CC_T308_2, l3dss1_t308_2},
+ {SBIT(10),
+ CC_T309, l3dss1_dl_release},
+};
+
+static struct stateentry datastatelist[] =
+{
+ {ALL_STATES,
+ MT_STATUS_ENQUIRY, l3dss1_status_enq},
+ {ALL_STATES,
+ MT_FACILITY, l3dss1_facility},
+ {SBIT(19),
+ MT_STATUS, l3dss1_release_ind},
+ {ALL_STATES,
+ MT_STATUS, l3dss1_status},
+ {SBIT(0),
+ MT_SETUP, l3dss1_setup},
+ {SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(12) |
+ SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25),
+ MT_SETUP, l3dss1_dummy},
+ {SBIT(1) | SBIT(2),
+ MT_CALL_PROCEEDING, l3dss1_call_proc},
+ {SBIT(1),
+ MT_SETUP_ACKNOWLEDGE, l3dss1_setup_ack},
+ {SBIT(2) | SBIT(3),
+ MT_ALERTING, l3dss1_alerting},
+ {SBIT(2) | SBIT(3),
+ MT_PROGRESS, l3dss1_progress},
+ {SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) |
+ SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25),
+ MT_INFORMATION, l3dss1_information},
+ {SBIT(10) | SBIT(11) | SBIT(15),
+ MT_NOTIFY, l3dss1_notify},
+ {SBIT(0) | SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(10) |
+ SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25),
+ MT_RELEASE_COMPLETE, l3dss1_release_cmpl},
+ {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(25),
+ MT_RELEASE, l3dss1_release},
+ {SBIT(19), MT_RELEASE, l3dss1_release_ind},
+ {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(15) | SBIT(17) | SBIT(25),
+ MT_DISCONNECT, l3dss1_disconnect},
+ {SBIT(19),
+ MT_DISCONNECT, l3dss1_dummy},
+ {SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4),
+ MT_CONNECT, l3dss1_connect},
+ {SBIT(8),
+ MT_CONNECT_ACKNOWLEDGE, l3dss1_connect_ack},
+ {SBIT(15),
+ MT_SUSPEND_ACKNOWLEDGE, l3dss1_suspend_ack},
+ {SBIT(15),
+ MT_SUSPEND_REJECT, l3dss1_suspend_rej},
+ {SBIT(17),
+ MT_RESUME_ACKNOWLEDGE, l3dss1_resume_ack},
+ {SBIT(17),
+ MT_RESUME_REJECT, l3dss1_resume_rej},
+};
+
+static struct stateentry globalmes_list[] =
+{
+ {ALL_STATES,
+ MT_STATUS, l3dss1_status},
+ {SBIT(0),
+ MT_RESTART, l3dss1_global_restart},
+/* {SBIT(1),
+ MT_RESTART_ACKNOWLEDGE, l3dss1_restart_ack},
+*/
+};
+
+static struct stateentry manstatelist[] =
+{
+ {SBIT(2),
+ DL_ESTABLISH | INDICATION, l3dss1_dl_reset},
+ {SBIT(10),
+ DL_ESTABLISH | CONFIRM, l3dss1_dl_reest_status},
+ {SBIT(10),
+ DL_RELEASE | INDICATION, l3dss1_dl_reestablish},
+ {ALL_STATES,
+ DL_RELEASE | INDICATION, l3dss1_dl_release},
+};
+
+/* *INDENT-ON* */
+
+
+static void
+global_handler(struct PStack *st, int mt, struct sk_buff *skb)
+{
+ u_char tmp[16];
+ u_char *p = tmp;
+ int l;
+ int i;
+ struct l3_process *proc = st->l3.global;
+
+ proc->callref = skb->data[2]; /* cr flag */
+ for (i = 0; i < ARRAY_SIZE(globalmes_list); i++)
+ if ((mt == globalmes_list[i].primitive) &&
+ ((1 << proc->state) & globalmes_list[i].state))
+ break;
+ if (i == ARRAY_SIZE(globalmes_list)) {
+ if (st->l3.debug & L3_DEB_STATE) {
+ l3_debug(st, "dss1 global state %d mt %x unhandled",
+ proc->state, mt);
+ }
+ MsgHead(p, proc->callref, MT_STATUS);
+ *p++ = IE_CAUSE;
+ *p++ = 0x2;
+ *p++ = 0x80;
+ *p++ = 81 | 0x80; /* invalid cr */
+ *p++ = 0x14; /* CallState */
+ *p++ = 0x1;
+ *p++ = proc->state & 0x3f;
+ l = p - tmp;
+ if (!(skb = l3_alloc_skb(l)))
+ return;
+ memcpy(skb_put(skb, l), tmp, l);
+ l3_msg(proc->st, DL_DATA | REQUEST, skb);
+ } else {
+ if (st->l3.debug & L3_DEB_STATE) {
+ l3_debug(st, "dss1 global %d mt %x",
+ proc->state, mt);
+ }
+ globalmes_list[i].rout(proc, mt, skb);
+ }
+}
+
+static void
+dss1up(struct PStack *st, int pr, void *arg)
+{
+ int i, mt, cr, callState;
+ char *ptr;
+ u_char *p;
+ struct sk_buff *skb = arg;
+ struct l3_process *proc;
+
+ switch (pr) {
+ case (DL_DATA | INDICATION):
+ case (DL_UNIT_DATA | INDICATION):
+ break;
+ case (DL_ESTABLISH | CONFIRM):
+ case (DL_ESTABLISH | INDICATION):
+ case (DL_RELEASE | INDICATION):
+ case (DL_RELEASE | CONFIRM):
+ l3_msg(st, pr, arg);
+ return;
+ break;
+ default:
+ printk(KERN_ERR "HiSax dss1up unknown pr=%04x\n", pr);
+ return;
+ }
+ if (skb->len < 3) {
+ l3_debug(st, "dss1up frame too short(%d)", skb->len);
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ if (skb->data[0] != PROTO_DIS_EURO) {
+ if (st->l3.debug & L3_DEB_PROTERR) {
+ l3_debug(st, "dss1up%sunexpected discriminator %x message len %d",
+ (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
+ skb->data[0], skb->len);
+ }
+ dev_kfree_skb(skb);
+ return;
+ }
+ cr = getcallref(skb->data);
+ if (skb->len < ((skb->data[1] & 0x0f) + 3)) {
+ l3_debug(st, "dss1up frame too short(%d)", skb->len);
+ dev_kfree_skb(skb);
+ return;
+ }
+ mt = skb->data[skb->data[1] + 2];
+ if (st->l3.debug & L3_DEB_STATE)
+ l3_debug(st, "dss1up cr %d", cr);
+ if (cr == -2) { /* wrong Callref */
+ if (st->l3.debug & L3_DEB_WARN)
+ l3_debug(st, "dss1up wrong Callref");
+ dev_kfree_skb(skb);
+ return;
+ } else if (cr == -1) { /* Dummy Callref */
+ if (mt == MT_FACILITY)
+ if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) {
+ l3dss1_parse_facility(st, NULL,
+ (pr == (DL_DATA | INDICATION)) ? -1 : -2, p);
+ dev_kfree_skb(skb);
+ return;
+ }
+ if (st->l3.debug & L3_DEB_WARN)
+ l3_debug(st, "dss1up dummy Callref (no facility msg or ie)");
+ dev_kfree_skb(skb);
+ return;
+ } else if ((((skb->data[1] & 0x0f) == 1) && (0 == (cr & 0x7f))) ||
+ (((skb->data[1] & 0x0f) == 2) && (0 == (cr & 0x7fff)))) { /* Global CallRef */
+ if (st->l3.debug & L3_DEB_STATE)
+ l3_debug(st, "dss1up Global CallRef");
+ global_handler(st, mt, skb);
+ dev_kfree_skb(skb);
+ return;
+ } else if (!(proc = getl3proc(st, cr))) {
+ /* No transaction process exist, that means no call with
+ * this callreference is active
+ */
+ if (mt == MT_SETUP) {
+ /* Setup creates a new transaction process */
+ if (skb->data[2] & 0x80) {
+ /* Setup with wrong CREF flag */
+ if (st->l3.debug & L3_DEB_STATE)
+ l3_debug(st, "dss1up wrong CRef flag");
+ dev_kfree_skb(skb);
+ return;
+ }
+ if (!(proc = dss1_new_l3_process(st, cr))) {
+ /* May be to answer with RELEASE_COMPLETE and
+ * CAUSE 0x2f "Resource unavailable", but this
+ * need a new_l3_process too ... arghh
+ */
+ dev_kfree_skb(skb);
+ return;
+ }
+ } else if (mt == MT_STATUS) {
+ if ((ptr = findie(skb->data, skb->len, IE_CAUSE, 0)) != NULL) {
+ ptr++;
+ if (*ptr++ == 2)
+ ptr++;
+ }
+ callState = 0;
+ if ((ptr = findie(skb->data, skb->len, IE_CALL_STATE, 0)) != NULL) {
+ ptr++;
+ if (*ptr++ == 2)
+ ptr++;
+ callState = *ptr;
+ }
+ /* ETS 300-104 part 2.4.1
+ * if setup has not been made and a message type
+ * MT_STATUS is received with call state == 0,
+ * we must send nothing
+ */
+ if (callState != 0) {
+ /* ETS 300-104 part 2.4.2
+ * if setup has not been made and a message type
+ * MT_STATUS is received with call state != 0,
+ * we must send MT_RELEASE_COMPLETE cause 101
+ */
+ if ((proc = dss1_new_l3_process(st, cr))) {
+ proc->para.cause = 101;
+ l3dss1_msg_without_setup(proc, 0, NULL);
+ }
+ }
+ dev_kfree_skb(skb);
+ return;
+ } else if (mt == MT_RELEASE_COMPLETE) {
+ dev_kfree_skb(skb);
+ return;
+ } else {
+ /* ETS 300-104 part 2
+ * if setup has not been made and a message type
+ * (except MT_SETUP and RELEASE_COMPLETE) is received,
+ * we must send MT_RELEASE_COMPLETE cause 81 */
+ dev_kfree_skb(skb);
+ if ((proc = dss1_new_l3_process(st, cr))) {
+ proc->para.cause = 81;
+ l3dss1_msg_without_setup(proc, 0, NULL);
+ }
+ return;
+ }
+ }
+ if (l3dss1_check_messagetype_validity(proc, mt, skb)) {
+ dev_kfree_skb(skb);
+ return;
+ }
+ if ((p = findie(skb->data, skb->len, IE_DISPLAY, 0)) != NULL)
+ l3dss1_deliver_display(proc, pr, p); /* Display IE included */
+ for (i = 0; i < ARRAY_SIZE(datastatelist); i++)
+ if ((mt == datastatelist[i].primitive) &&
+ ((1 << proc->state) & datastatelist[i].state))
+ break;
+ if (i == ARRAY_SIZE(datastatelist)) {
+ if (st->l3.debug & L3_DEB_STATE) {
+ l3_debug(st, "dss1up%sstate %d mt %#x unhandled",
+ (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
+ proc->state, mt);
+ }
+ if ((MT_RELEASE_COMPLETE != mt) && (MT_RELEASE != mt)) {
+ proc->para.cause = 101;
+ l3dss1_status_send(proc, pr, skb);
+ }
+ } else {
+ if (st->l3.debug & L3_DEB_STATE) {
+ l3_debug(st, "dss1up%sstate %d mt %x",
+ (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
+ proc->state, mt);
+ }
+ datastatelist[i].rout(proc, pr, skb);
+ }
+ dev_kfree_skb(skb);
+ return;
+}
+
+static void
+dss1down(struct PStack *st, int pr, void *arg)
+{
+ int i, cr;
+ struct l3_process *proc;
+ struct Channel *chan;
+
+ if ((DL_ESTABLISH | REQUEST) == pr) {
+ l3_msg(st, pr, NULL);
+ return;
+ } else if (((CC_SETUP | REQUEST) == pr) || ((CC_RESUME | REQUEST) == pr)) {
+ chan = arg;
+ cr = newcallref();
+ cr |= 0x80;
+ if ((proc = dss1_new_l3_process(st, cr))) {
+ proc->chan = chan;
+ chan->proc = proc;
+ memcpy(&proc->para.setup, &chan->setup, sizeof(setup_parm));
+ proc->callref = cr;
+ }
+ } else {
+ proc = arg;
+ }
+ if (!proc) {
+ printk(KERN_ERR "HiSax dss1down without proc pr=%04x\n", pr);
+ return;
+ }
+
+ if (pr == (CC_TDSS1_IO | REQUEST)) {
+ l3dss1_io_timer(proc); /* timer expires */
+ return;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(downstatelist); i++)
+ if ((pr == downstatelist[i].primitive) &&
+ ((1 << proc->state) & downstatelist[i].state))
+ break;
+ if (i == ARRAY_SIZE(downstatelist)) {
+ if (st->l3.debug & L3_DEB_STATE) {
+ l3_debug(st, "dss1down state %d prim %#x unhandled",
+ proc->state, pr);
+ }
+ } else {
+ if (st->l3.debug & L3_DEB_STATE) {
+ l3_debug(st, "dss1down state %d prim %#x",
+ proc->state, pr);
+ }
+ downstatelist[i].rout(proc, pr, arg);
+ }
+}
+
+static void
+dss1man(struct PStack *st, int pr, void *arg)
+{
+ int i;
+ struct l3_process *proc = arg;
+
+ if (!proc) {
+ printk(KERN_ERR "HiSax dss1man without proc pr=%04x\n", pr);
+ return;
+ }
+ for (i = 0; i < ARRAY_SIZE(manstatelist); i++)
+ if ((pr == manstatelist[i].primitive) &&
+ ((1 << proc->state) & manstatelist[i].state))
+ break;
+ if (i == ARRAY_SIZE(manstatelist)) {
+ if (st->l3.debug & L3_DEB_STATE) {
+ l3_debug(st, "cr %d dss1man state %d prim %#x unhandled",
+ proc->callref & 0x7f, proc->state, pr);
+ }
+ } else {
+ if (st->l3.debug & L3_DEB_STATE) {
+ l3_debug(st, "cr %d dss1man state %d prim %#x",
+ proc->callref & 0x7f, proc->state, pr);
+ }
+ manstatelist[i].rout(proc, pr, arg);
+ }
+}
+
+void
+setstack_dss1(struct PStack *st)
+{
+ char tmp[64];
+ int i;
+
+ st->lli.l4l3 = dss1down;
+ st->lli.l4l3_proto = l3dss1_cmd_global;
+ st->l2.l2l3 = dss1up;
+ st->l3.l3ml3 = dss1man;
+ st->l3.N303 = 1;
+ st->prot.dss1.last_invoke_id = 0;
+ st->prot.dss1.invoke_used[0] = 1; /* Bit 0 must always be set to 1 */
+ i = 1;
+ while (i < 32)
+ st->prot.dss1.invoke_used[i++] = 0;
+
+ if (!(st->l3.global = kmalloc(sizeof(struct l3_process), GFP_ATOMIC))) {
+ printk(KERN_ERR "HiSax can't get memory for dss1 global CR\n");
+ } else {
+ st->l3.global->state = 0;
+ st->l3.global->callref = 0;
+ st->l3.global->next = NULL;
+ st->l3.global->debug = L3_DEB_WARN;
+ st->l3.global->st = st;
+ st->l3.global->N303 = 1;
+ st->l3.global->prot.dss1.invoke_id = 0;
+
+ L3InitTimer(st->l3.global, &st->l3.global->timer);
+ }
+ strcpy(tmp, dss1_revision);
+ printk(KERN_INFO "HiSax: DSS1 Rev. %s\n", HiSax_getrev(tmp));
+}
Code Review / kvmfornfv.git / blobdiff