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-rw-r--r--sys/netccitt/hd_input.c132
1 files changed, 66 insertions, 66 deletions
diff --git a/sys/netccitt/hd_input.c b/sys/netccitt/hd_input.c
index f23eada2d349..91fd2fe7bdfa 100644
--- a/sys/netccitt/hd_input.c
+++ b/sys/netccitt/hd_input.c
@@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)hd_input.c 8.1 (Berkeley) 6/10/93
- * $Id: hd_input.c,v 1.3 1995/02/15 06:29:43 jkh Exp $
+ * $Id: hd_input.c,v 1.4 1995/05/11 19:26:39 rgrimes Exp $
*/
#include <sys/param.h>
@@ -157,11 +157,11 @@ register struct mbuf *fbuf;
SET_TIMER (hdp);
break;
- case SABM + DM_SENT:
- case SABM + WAIT_SABM:
+ case SABM + DM_SENT:
+ case SABM + WAIT_SABM:
hd_writeinternal (hdp, UA, pf);
- case UA + SABM_SENT:
- case UA + WAIT_UA:
+ case UA + SABM_SENT:
+ case UA + WAIT_UA:
KILL_TIMER (hdp);
hd_initvars (hdp);
hdp->hd_state = ABM;
@@ -170,13 +170,13 @@ register struct mbuf *fbuf;
(void) pk_ctlinput (PRC_LINKUP, hdp->hd_pkp);
break;
- case SABM + SABM_SENT:
+ case SABM + SABM_SENT:
/* Got a SABM collision. Acknowledge the remote's SABM
via UA but still wait for UA. */
hd_writeinternal (hdp, UA, pf);
break;
- case SABM + ABM:
+ case SABM + ABM:
/* Request to reset the link from the remote. */
KILL_TIMER (hdp);
hd_message (hdp, "Link reset");
@@ -190,28 +190,28 @@ register struct mbuf *fbuf;
hdp->hd_resets++;
break;
- case SABM + WAIT_UA:
+ case SABM + WAIT_UA:
hd_writeinternal (hdp, UA, pf);
break;
- case DM + ABM:
+ case DM + ABM:
hd_message (hdp, "DM received: link down");
#ifdef HDLCDEBUG
hd_dumptrace (hdp);
#endif
(void) pk_ctlinput (PRC_LINKDOWN, hdp->hd_pkp);
hd_flush (hdp->hd_ifp);
- case DM + DM_SENT:
- case DM + WAIT_SABM:
- case DM + WAIT_UA:
+ case DM + DM_SENT:
+ case DM + WAIT_SABM:
+ case DM + WAIT_UA:
hd_writeinternal (hdp, SABM, pf);
hdp->hd_state = SABM_SENT;
SET_TIMER (hdp);
break;
case DISC + INIT:
- case DISC + DM_SENT:
- case DISC + SABM_SENT:
+ case DISC + DM_SENT:
+ case DISC + SABM_SENT:
/* Note: This is a non-standard state change. */
hd_writeinternal (hdp, UA, pf);
hd_writeinternal (hdp, SABM, POLLOFF);
@@ -219,43 +219,43 @@ register struct mbuf *fbuf;
SET_TIMER (hdp);
break;
- case DISC + WAIT_UA:
+ case DISC + WAIT_UA:
hd_writeinternal (hdp, DM, pf);
SET_TIMER (hdp);
hdp->hd_state = DM_SENT;
break;
- case DISC + ABM:
+ case DISC + ABM:
hd_message (hdp, "DISC received: link down");
(void) pk_ctlinput (PRC_LINKDOWN, hdp->hd_pkp);
- case DISC + WAIT_SABM:
+ case DISC + WAIT_SABM:
hd_writeinternal (hdp, UA, pf);
hdp->hd_state = DM_SENT;
SET_TIMER (hdp);
break;
- case UA + ABM:
+ case UA + ABM:
hd_message (hdp, "UA received: link down");
(void) pk_ctlinput (PRC_LINKDOWN, hdp->hd_pkp);
- case UA + WAIT_SABM:
+ case UA + WAIT_SABM:
hd_writeinternal (hdp, DM, pf);
hdp->hd_state = DM_SENT;
SET_TIMER (hdp);
break;
- case FRMR + DM_SENT:
+ case FRMR + DM_SENT:
hd_writeinternal (hdp, SABM, pf);
hdp->hd_state = SABM_SENT;
SET_TIMER (hdp);
break;
- case FRMR + WAIT_SABM:
+ case FRMR + WAIT_SABM:
hd_writeinternal (hdp, DM, pf);
hdp->hd_state = DM_SENT;
SET_TIMER (hdp);
break;
- case FRMR + ABM:
+ case FRMR + ABM:
hd_message (hdp, "FRMR received: link down");
(void) pk_ctlinput (PRC_LINKDOWN, hdp->hd_pkp);
#ifdef HDLCDEBUG
@@ -267,41 +267,41 @@ register struct mbuf *fbuf;
SET_TIMER (hdp);
break;
- case RR + ABM:
- case RNR + ABM:
- case REJ + ABM:
+ case RR + ABM:
+ case RNR + ABM:
+ case REJ + ABM:
process_sframe (hdp, (struct Hdlc_sframe *)frame, frametype);
break;
- case IFRAME + ABM:
+ case IFRAME + ABM:
queued = process_iframe (hdp, fbuf, (struct Hdlc_iframe *)frame);
break;
- case IFRAME + SABM_SENT:
- case RR + SABM_SENT:
- case RNR + SABM_SENT:
- case REJ + SABM_SENT:
+ case IFRAME + SABM_SENT:
+ case RR + SABM_SENT:
+ case RNR + SABM_SENT:
+ case REJ + SABM_SENT:
hd_writeinternal (hdp, DM, POLLON);
hdp->hd_state = DM_SENT;
SET_TIMER (hdp);
break;
- case IFRAME + WAIT_SABM:
- case RR + WAIT_SABM:
- case RNR + WAIT_SABM:
- case REJ + WAIT_SABM:
+ case IFRAME + WAIT_SABM:
+ case RR + WAIT_SABM:
+ case RNR + WAIT_SABM:
+ case REJ + WAIT_SABM:
hd_writeinternal (hdp, FRMR, POLLOFF);
SET_TIMER (hdp);
break;
- case ILLEGAL + SABM_SENT:
+ case ILLEGAL + SABM_SENT:
hdp->hd_unknown++;
hd_writeinternal (hdp, DM, POLLOFF);
hdp->hd_state = DM_SENT;
SET_TIMER (hdp);
break;
- case ILLEGAL + ABM:
+ case ILLEGAL + ABM:
hd_message (hdp, "Unknown frame received: link down");
(void) pk_ctlinput (PRC_LINKDOWN, hdp->hd_pkp);
case ILLEGAL + WAIT_SABM:
@@ -329,7 +329,7 @@ register struct Hdlc_iframe *frame;
pf = frame -> pf;
register int queued = FALSE;
- /*
+ /*
* Validate the iframe's N(R) value. It's N(R) value must be in
* sync with our V(S) value and our "last received nr".
*/
@@ -340,7 +340,7 @@ register struct Hdlc_iframe *frame;
}
- /*
+ /*
* This section tests the IFRAME for proper sequence. That is, it's
* sequence number N(S) MUST be equal to V(S).
*/
@@ -366,10 +366,10 @@ register struct Hdlc_iframe *frame;
}
hdp->hd_condition &= ~REJ_CONDITION;
- /*
+ /*
* This section finally tests the IFRAME's sequence number against
* the window size (K) and the sequence number of the last frame
- * we have acknowledged. If the IFRAME is completely correct then
+ * we have acknowledged. If the IFRAME is completely correct then
* it is queued for the packet level.
*/
@@ -379,7 +379,7 @@ register struct Hdlc_iframe *frame;
/* Must generate a RR or RNR with final bit on. */
hd_writeinternal (hdp, RR, POLLON);
} else
- /*
+ /*
* Hopefully we can piggyback the RR, if not we will generate
* a RR when T3 timer expires.
*/
@@ -396,7 +396,7 @@ register struct Hdlc_iframe *frame;
#else
{
register struct mbuf *m;
-
+
for (m = fbuf; m -> m_next; m = m -> m_next)
m -> m_act = (struct mbuf *) 0;
m -> m_act = (struct mbuf *) 1;
@@ -406,9 +406,9 @@ register struct Hdlc_iframe *frame;
queued = TRUE;
hd_start (hdp);
} else {
- /*
+ /*
* Here if the remote station has transmitted more iframes then
- * the number which have been acknowledged plus K.
+ * the number which have been acknowledged plus K.
*/
hdp->hd_invalid_ns++;
frame_reject (hdp, W, frame);
@@ -416,7 +416,7 @@ register struct Hdlc_iframe *frame;
return (queued);
}
-/*
+/*
* This routine is used to determine if a value (the middle parameter)
* is between two other values. The low value is the first parameter
* the high value is the last parameter. The routine checks the middle
@@ -441,7 +441,7 @@ int rear,
return (result);
}
-/*
+/*
* This routine handles all the frame reject conditions which can
* arise as a result of secondary processing. The frame reject
* condition Y (frame length error) are handled elsewhere.
@@ -466,20 +466,20 @@ struct Hdlc_iframe *frame;
frmr -> frmr_w = frmr -> frmr_x = frmr -> frmr_y =
frmr -> frmr_z = 0;
switch (rejectcode) {
- case Z:
+ case Z:
frmr -> frmr_z = 1;/* invalid N(R). */
break;
- case Y:
+ case Y:
frmr -> frmr_y = 1;/* iframe length error. */
break;
- case X:
+ case X:
frmr -> frmr_x = 1;/* invalid information field. */
frmr -> frmr_w = 1;
break;
- case W:
+ case W:
frmr -> frmr_w = 1;/* invalid N(S). */
}
@@ -489,7 +489,7 @@ struct Hdlc_iframe *frame;
SET_TIMER (hdp);
}
-/*
+/*
* This procedure is invoked when ever we receive a supervisor
* frame such as RR, RNR and REJ. All processing for these
* frames is done here.
@@ -505,16 +505,16 @@ int frametype;
if (valid_nr (hdp, nr, pf) == TRUE) {
switch (frametype) {
- case RR:
+ case RR:
hdp->hd_condition &= ~REMOTE_RNR_CONDITION;
break;
- case RNR:
+ case RNR:
hdp->hd_condition |= REMOTE_RNR_CONDITION;
hdp->hd_retxcnt = 0;
break;
- case REJ:
+ case REJ:
hdp->hd_condition &= ~REMOTE_RNR_CONDITION;
rej_routine (hdp, nr);
}
@@ -545,7 +545,7 @@ int frametype;
frame_reject (hdp, Z, (struct Hdlc_iframe *)frame); /* Invalid N(R). */
}
-/*
+/*
* This routine tests the validity of the N(R) which we have received.
* If it is ok, then all the iframes which it acknowledges (if any)
* will be freed.
@@ -561,7 +561,7 @@ register int finalbit;
if (hdp->hd_lastrxnr == nr)
return (TRUE);
- /*
+ /*
* This section validates the frame's N(R) value. It's N(R) value
* must be in syncronization with our V(S) value and our "last
* received nr" variable. If it is correct then we are able to send
@@ -579,7 +579,7 @@ register int finalbit;
}
}
- /*
+ /*
* If we get to here, we do have a valid frame but it might be out
* of sequence. However, we should still accept the receive state
* number N(R) since it has already passed our previous test and it
@@ -594,7 +594,7 @@ register int finalbit;
return (TRUE);
}
-/*
+/*
* This routine determines how many iframes need to be retransmitted.
* It then resets the Send State Variable V(S) to accomplish this.
*/
@@ -613,10 +613,10 @@ register int rejnr;
hd_flush (hdp->hd_ifp);
- /*
- * Determine how many frames should be re-transmitted. In the case
+ /*
+ * Determine how many frames should be re-transmitted. In the case
* of a normal REJ this should be 1 to K. In the case of a timer
- * recovery REJ (ie. a REJ with the Final Bit on) this could be 0.
+ * recovery REJ (ie. a REJ with the Final Bit on) this could be 0.
*/
anchor = hdp->hd_vs;
@@ -638,7 +638,7 @@ register int rejnr;
hd_start (hdp);
}
-/*
+/*
* This routine frees iframes from the retransmit queue. It is called
* when a previously written iframe is acknowledged.
*/
@@ -652,12 +652,12 @@ register int finalbit;
{
register int i, k;
- /*
- * We need to do the following because of a funny quirk in the
- * protocol. This case occures when in Timer recovery condition
+ /*
+ * We need to do the following because of a funny quirk in the
+ * protocol. This case occures when in Timer recovery condition
* we get a N(R) which acknowledges all the outstanding iframes
* but with the Final Bit off. In this case we need to save the last
- * iframe for possible retransmission even though it has already been
+ * iframe for possible retransmission even though it has already been
* acknowledged!
*/
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