Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/isdn/hisax/tei.c b/drivers/isdn/hisax/tei.c
new file mode 100644
index 0000000..082726d
--- /dev/null
+++ b/drivers/isdn/hisax/tei.c
@@ -0,0 +1,466 @@
+/* $Id: tei.c,v 2.20.2.3 2004/01/13 14:31:26 keil Exp $
+ *
+ * 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 "isdnl2.h"
+#include <linux/init.h>
+#include <linux/random.h>
+
+const char *tei_revision = "$Revision: 2.20.2.3 $";
+
+#define ID_REQUEST 1
+#define ID_ASSIGNED 2
+#define ID_DENIED 3
+#define ID_CHK_REQ 4
+#define ID_CHK_RES 5
+#define ID_REMOVE 6
+#define ID_VERIFY 7
+
+#define TEI_ENTITY_ID 0xf
+
+static struct Fsm teifsm;
+
+void tei_handler(struct PStack *st, u_char pr, struct sk_buff *skb);
+
+enum {
+ ST_TEI_NOP,
+ ST_TEI_IDREQ,
+ ST_TEI_IDVERIFY,
+};
+
+#define TEI_STATE_COUNT (ST_TEI_IDVERIFY+1)
+
+static char *strTeiState[] =
+{
+ "ST_TEI_NOP",
+ "ST_TEI_IDREQ",
+ "ST_TEI_IDVERIFY",
+};
+
+enum {
+ EV_IDREQ,
+ EV_ASSIGN,
+ EV_DENIED,
+ EV_CHKREQ,
+ EV_REMOVE,
+ EV_VERIFY,
+ EV_T202,
+};
+
+#define TEI_EVENT_COUNT (EV_T202+1)
+
+static char *strTeiEvent[] =
+{
+ "EV_IDREQ",
+ "EV_ASSIGN",
+ "EV_DENIED",
+ "EV_CHKREQ",
+ "EV_REMOVE",
+ "EV_VERIFY",
+ "EV_T202",
+};
+
+unsigned int
+random_ri(void)
+{
+ unsigned int x;
+
+ get_random_bytes(&x, sizeof(x));
+ return (x & 0xffff);
+}
+
+static struct PStack *
+findtei(struct PStack *st, int tei)
+{
+ struct PStack *ptr = *(st->l1.stlistp);
+
+ if (tei == 127)
+ return (NULL);
+
+ while (ptr)
+ if (ptr->l2.tei == tei)
+ return (ptr);
+ else
+ ptr = ptr->next;
+ return (NULL);
+}
+
+static void
+put_tei_msg(struct PStack *st, u_char m_id, unsigned int ri, u_char tei)
+{
+ struct sk_buff *skb;
+ u_char *bp;
+
+ if (!(skb = alloc_skb(8, GFP_ATOMIC))) {
+ printk(KERN_WARNING "HiSax: No skb for TEI manager\n");
+ return;
+ }
+ bp = skb_put(skb, 3);
+ bp[0] = (TEI_SAPI << 2);
+ bp[1] = (GROUP_TEI << 1) | 0x1;
+ bp[2] = UI;
+ bp = skb_put(skb, 5);
+ bp[0] = TEI_ENTITY_ID;
+ bp[1] = ri >> 8;
+ bp[2] = ri & 0xff;
+ bp[3] = m_id;
+ bp[4] = (tei << 1) | 1;
+ st->l2.l2l1(st, PH_DATA | REQUEST, skb);
+}
+
+static void
+tei_id_request(struct FsmInst *fi, int event, void *arg)
+{
+ struct PStack *st = fi->userdata;
+
+ if (st->l2.tei != -1) {
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "assign request for allready asigned tei %d",
+ st->l2.tei);
+ return;
+ }
+ st->ma.ri = random_ri();
+ if (st->ma.debug)
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "assign request ri %d", st->ma.ri);
+ put_tei_msg(st, ID_REQUEST, st->ma.ri, 127);
+ FsmChangeState(&st->ma.tei_m, ST_TEI_IDREQ);
+ FsmAddTimer(&st->ma.t202, st->ma.T202, EV_T202, NULL, 1);
+ st->ma.N202 = 3;
+}
+
+static void
+tei_id_assign(struct FsmInst *fi, int event, void *arg)
+{
+ struct PStack *ost, *st = fi->userdata;
+ struct sk_buff *skb = arg;
+ struct IsdnCardState *cs;
+ int ri, tei;
+
+ ri = ((unsigned int) skb->data[1] << 8) + skb->data[2];
+ tei = skb->data[4] >> 1;
+ if (st->ma.debug)
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "identity assign ri %d tei %d", ri, tei);
+ if ((ost = findtei(st, tei))) { /* same tei is in use */
+ if (ri != ost->ma.ri) {
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "possible duplicate assignment tei %d", tei);
+ ost->l2.l2tei(ost, MDL_ERROR | RESPONSE, NULL);
+ }
+ } else if (ri == st->ma.ri) {
+ FsmDelTimer(&st->ma.t202, 1);
+ FsmChangeState(&st->ma.tei_m, ST_TEI_NOP);
+ st->l3.l3l2(st, MDL_ASSIGN | REQUEST, (void *) (long) tei);
+ cs = (struct IsdnCardState *) st->l1.hardware;
+ cs->cardmsg(cs, MDL_ASSIGN | REQUEST, NULL);
+ }
+}
+
+static void
+tei_id_test_dup(struct FsmInst *fi, int event, void *arg)
+{
+ struct PStack *ost, *st = fi->userdata;
+ struct sk_buff *skb = arg;
+ int tei, ri;
+
+ ri = ((unsigned int) skb->data[1] << 8) + skb->data[2];
+ tei = skb->data[4] >> 1;
+ if (st->ma.debug)
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "foreign identity assign ri %d tei %d", ri, tei);
+ if ((ost = findtei(st, tei))) { /* same tei is in use */
+ if (ri != ost->ma.ri) { /* and it wasn't our request */
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "possible duplicate assignment tei %d", tei);
+ FsmEvent(&ost->ma.tei_m, EV_VERIFY, NULL);
+ }
+ }
+}
+
+static void
+tei_id_denied(struct FsmInst *fi, int event, void *arg)
+{
+ struct PStack *st = fi->userdata;
+ struct sk_buff *skb = arg;
+ int ri, tei;
+
+ ri = ((unsigned int) skb->data[1] << 8) + skb->data[2];
+ tei = skb->data[4] >> 1;
+ if (st->ma.debug)
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "identity denied ri %d tei %d", ri, tei);
+}
+
+static void
+tei_id_chk_req(struct FsmInst *fi, int event, void *arg)
+{
+ struct PStack *st = fi->userdata;
+ struct sk_buff *skb = arg;
+ int tei;
+
+ tei = skb->data[4] >> 1;
+ if (st->ma.debug)
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "identity check req tei %d", tei);
+ if ((st->l2.tei != -1) && ((tei == GROUP_TEI) || (tei == st->l2.tei))) {
+ FsmDelTimer(&st->ma.t202, 4);
+ FsmChangeState(&st->ma.tei_m, ST_TEI_NOP);
+ put_tei_msg(st, ID_CHK_RES, random_ri(), st->l2.tei);
+ }
+}
+
+static void
+tei_id_remove(struct FsmInst *fi, int event, void *arg)
+{
+ struct PStack *st = fi->userdata;
+ struct sk_buff *skb = arg;
+ struct IsdnCardState *cs;
+ int tei;
+
+ tei = skb->data[4] >> 1;
+ if (st->ma.debug)
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "identity remove tei %d", tei);
+ if ((st->l2.tei != -1) && ((tei == GROUP_TEI) || (tei == st->l2.tei))) {
+ FsmDelTimer(&st->ma.t202, 5);
+ FsmChangeState(&st->ma.tei_m, ST_TEI_NOP);
+ st->l3.l3l2(st, MDL_REMOVE | REQUEST, NULL);
+ cs = (struct IsdnCardState *) st->l1.hardware;
+ cs->cardmsg(cs, MDL_REMOVE | REQUEST, NULL);
+ }
+}
+
+static void
+tei_id_verify(struct FsmInst *fi, int event, void *arg)
+{
+ struct PStack *st = fi->userdata;
+
+ if (st->ma.debug)
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "id verify request for tei %d", st->l2.tei);
+ put_tei_msg(st, ID_VERIFY, 0, st->l2.tei);
+ FsmChangeState(&st->ma.tei_m, ST_TEI_IDVERIFY);
+ FsmAddTimer(&st->ma.t202, st->ma.T202, EV_T202, NULL, 2);
+ st->ma.N202 = 2;
+}
+
+static void
+tei_id_req_tout(struct FsmInst *fi, int event, void *arg)
+{
+ struct PStack *st = fi->userdata;
+ struct IsdnCardState *cs;
+
+ if (--st->ma.N202) {
+ st->ma.ri = random_ri();
+ if (st->ma.debug)
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "assign req(%d) ri %d", 4 - st->ma.N202,
+ st->ma.ri);
+ put_tei_msg(st, ID_REQUEST, st->ma.ri, 127);
+ FsmAddTimer(&st->ma.t202, st->ma.T202, EV_T202, NULL, 3);
+ } else {
+ st->ma.tei_m.printdebug(&st->ma.tei_m, "assign req failed");
+ st->l3.l3l2(st, MDL_ERROR | RESPONSE, NULL);
+ cs = (struct IsdnCardState *) st->l1.hardware;
+ cs->cardmsg(cs, MDL_REMOVE | REQUEST, NULL);
+ FsmChangeState(fi, ST_TEI_NOP);
+ }
+}
+
+static void
+tei_id_ver_tout(struct FsmInst *fi, int event, void *arg)
+{
+ struct PStack *st = fi->userdata;
+ struct IsdnCardState *cs;
+
+ if (--st->ma.N202) {
+ if (st->ma.debug)
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "id verify req(%d) for tei %d",
+ 3 - st->ma.N202, st->l2.tei);
+ put_tei_msg(st, ID_VERIFY, 0, st->l2.tei);
+ FsmAddTimer(&st->ma.t202, st->ma.T202, EV_T202, NULL, 4);
+ } else {
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "verify req for tei %d failed", st->l2.tei);
+ st->l3.l3l2(st, MDL_REMOVE | REQUEST, NULL);
+ cs = (struct IsdnCardState *) st->l1.hardware;
+ cs->cardmsg(cs, MDL_REMOVE | REQUEST, NULL);
+ FsmChangeState(fi, ST_TEI_NOP);
+ }
+}
+
+static void
+tei_l1l2(struct PStack *st, int pr, void *arg)
+{
+ struct sk_buff *skb = arg;
+ int mt;
+
+ if (test_bit(FLG_FIXED_TEI, &st->l2.flag)) {
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ if (pr == (PH_DATA | INDICATION)) {
+ if (skb->len < 3) {
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "short mgr frame %ld/3", skb->len);
+ } else if ((skb->data[0] != ((TEI_SAPI << 2) | 2)) ||
+ (skb->data[1] != ((GROUP_TEI << 1) | 1))) {
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "wrong mgr sapi/tei %x/%x",
+ skb->data[0], skb->data[1]);
+ } else if ((skb->data[2] & 0xef) != UI) {
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "mgr frame is not ui %x", skb->data[2]);
+ } else {
+ skb_pull(skb, 3);
+ if (skb->len < 5) {
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "short mgr frame %ld/5", skb->len);
+ } else if (skb->data[0] != TEI_ENTITY_ID) {
+ /* wrong management entity identifier, ignore */
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "tei handler wrong entity id %x",
+ skb->data[0]);
+ } else {
+ mt = skb->data[3];
+ if (mt == ID_ASSIGNED)
+ FsmEvent(&st->ma.tei_m, EV_ASSIGN, skb);
+ else if (mt == ID_DENIED)
+ FsmEvent(&st->ma.tei_m, EV_DENIED, skb);
+ else if (mt == ID_CHK_REQ)
+ FsmEvent(&st->ma.tei_m, EV_CHKREQ, skb);
+ else if (mt == ID_REMOVE)
+ FsmEvent(&st->ma.tei_m, EV_REMOVE, skb);
+ else {
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "tei handler wrong mt %x\n", mt);
+ }
+ }
+ }
+ } else {
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "tei handler wrong pr %x\n", pr);
+ }
+ dev_kfree_skb(skb);
+}
+
+static void
+tei_l2tei(struct PStack *st, int pr, void *arg)
+{
+ struct IsdnCardState *cs;
+
+ if (test_bit(FLG_FIXED_TEI, &st->l2.flag)) {
+ if (pr == (MDL_ASSIGN | INDICATION)) {
+ if (st->ma.debug)
+ st->ma.tei_m.printdebug(&st->ma.tei_m,
+ "fixed assign tei %d", st->l2.tei);
+ st->l3.l3l2(st, MDL_ASSIGN | REQUEST, (void *) (long) st->l2.tei);
+ cs = (struct IsdnCardState *) st->l1.hardware;
+ cs->cardmsg(cs, MDL_ASSIGN | REQUEST, NULL);
+ }
+ return;
+ }
+ switch (pr) {
+ case (MDL_ASSIGN | INDICATION):
+ FsmEvent(&st->ma.tei_m, EV_IDREQ, arg);
+ break;
+ case (MDL_ERROR | REQUEST):
+ FsmEvent(&st->ma.tei_m, EV_VERIFY, arg);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+tei_debug(struct FsmInst *fi, char *fmt, ...)
+{
+ va_list args;
+ struct PStack *st = fi->userdata;
+
+ va_start(args, fmt);
+ VHiSax_putstatus(st->l1.hardware, "tei ", fmt, args);
+ va_end(args);
+}
+
+void
+setstack_tei(struct PStack *st)
+{
+ st->l2.l2tei = tei_l2tei;
+ st->ma.T202 = 2000; /* T202 2000 milliseconds */
+ st->l1.l1tei = tei_l1l2;
+ st->ma.debug = 1;
+ st->ma.tei_m.fsm = &teifsm;
+ st->ma.tei_m.state = ST_TEI_NOP;
+ st->ma.tei_m.debug = 1;
+ st->ma.tei_m.userdata = st;
+ st->ma.tei_m.userint = 0;
+ st->ma.tei_m.printdebug = tei_debug;
+ FsmInitTimer(&st->ma.tei_m, &st->ma.t202);
+}
+
+void
+init_tei(struct IsdnCardState *cs, int protocol)
+{
+}
+
+void
+release_tei(struct IsdnCardState *cs)
+{
+ struct PStack *st = cs->stlist;
+
+ while (st) {
+ FsmDelTimer(&st->ma.t202, 1);
+ st = st->next;
+ }
+}
+
+static struct FsmNode TeiFnList[] __initdata =
+{
+ {ST_TEI_NOP, EV_IDREQ, tei_id_request},
+ {ST_TEI_NOP, EV_ASSIGN, tei_id_test_dup},
+ {ST_TEI_NOP, EV_VERIFY, tei_id_verify},
+ {ST_TEI_NOP, EV_REMOVE, tei_id_remove},
+ {ST_TEI_NOP, EV_CHKREQ, tei_id_chk_req},
+ {ST_TEI_IDREQ, EV_T202, tei_id_req_tout},
+ {ST_TEI_IDREQ, EV_ASSIGN, tei_id_assign},
+ {ST_TEI_IDREQ, EV_DENIED, tei_id_denied},
+ {ST_TEI_IDVERIFY, EV_T202, tei_id_ver_tout},
+ {ST_TEI_IDVERIFY, EV_REMOVE, tei_id_remove},
+ {ST_TEI_IDVERIFY, EV_CHKREQ, tei_id_chk_req},
+};
+
+#define TEI_FN_COUNT (sizeof(TeiFnList)/sizeof(struct FsmNode))
+
+int __init
+TeiNew(void)
+{
+ teifsm.state_count = TEI_STATE_COUNT;
+ teifsm.event_count = TEI_EVENT_COUNT;
+ teifsm.strEvent = strTeiEvent;
+ teifsm.strState = strTeiState;
+ return FsmNew(&teifsm, TeiFnList, TEI_FN_COUNT);
+}
+
+void
+TeiFree(void)
+{
+ FsmFree(&teifsm);
+}