From ecb32ede6ab411b9c209d0e641da00bd18357b23 Mon Sep 17 00:00:00 2001
From: Mark Spencer <markster@digium.com>
Date: Mon, 21 May 2001 13:39:30 +0000
Subject: [PATCH] Version 0.1.1 from FTP

git-svn-id: https://origsvn.digium.com/svn/libpri/trunk@8 2fbb986a-6c06-0410-b554-c9c1f0a7f128
---
 pri_q921.h |  7 +++++++
 q921.c     | 10 +++++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/pri_q921.h b/pri_q921.h
index d10b31c..aa7b720 100755
--- a/pri_q921.h
+++ b/pri_q921.h
@@ -41,6 +41,13 @@
 #define Q921_FRAMETYPE_I	0x0
 #define Q921_FRAMETYPE_S	0x1
 
+#define Q921_TEI_GROUP				127
+
+#define Q921_SAPI_CALL_CTRL			0
+#define Q921_SAPI_PACKET_MODE		1
+#define Q921_SAPI_X25_LAYER3      	16
+#define Q921_SAPI_LAYER2_MANAGEMENT	63
+
 
 typedef struct q921_header {
 #if __BYTE_ORDER == __BIG_ENDIAN
diff --git a/q921.c b/q921.c
index d12a956..aad39b1 100755
--- a/q921.c
+++ b/q921.c
@@ -347,6 +347,7 @@ void q921_dump(q921_h *h, int len, int showraw, int txrx)
 			printf("%02x ",h->raw[x]);
 		printf("]\n");
 	}
+
 	switch(h->h.data[0] & Q921_FRAMETYPE_MASK) {
 	case 0:
 	case 2:
@@ -482,7 +483,15 @@ pri_event *q921_receive(struct pri *pri, q921_h *h, int len)
 	/* Check some reject conditions -- Start by rejecting improper ea's */
 	if (h->h.ea1 || !(h->h.ea2))
 		return NULL;
+
+	/* Check for broadcasts - not yet handled */
+	if (h->h.tei == Q921_TEI_GROUP)
+		return NULL;
 	
+	/* Check for SAPIs we don't yet handle */
+	if (h->h.sapi != Q921_SAPI_CALL_CTRL)
+		return NULL;
+
 	switch(h->h.data[0] & Q921_FRAMETYPE_MASK) {
 	case 0:
 	case 2:
@@ -620,4 +629,3 @@ void q921_start(struct pri *pri)
 	/* Do the SABME XXX Maybe we should implement T_WAIT? XXX */
 	q921_send_sabme(pri);
 }
-