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Diffstat (limited to 'net/x25/x25_subr.c')
-rw-r--r--net/x25/x25_subr.c23
1 files changed, 18 insertions, 5 deletions
diff --git a/net/x25/x25_subr.c b/net/x25/x25_subr.c
index c349bbd61684..7fd872ad0c20 100644
--- a/net/x25/x25_subr.c
+++ b/net/x25/x25_subr.c
@@ -19,6 +19,8 @@
* mar/20/00 Daniela Squassoni Disabling/enabling of facilities
* negotiation.
* jun/24/01 Arnaldo C. Melo use skb_queue_purge, cleanups
+ * apr/04/15 Shaun Pereira Fast select with no
+ * restriction on response.
*/
#include <linux/kernel.h>
@@ -127,8 +129,12 @@ void x25_write_internal(struct sock *sk, int frametype)
len += 1 + X25_ADDR_LEN + X25_MAX_FAC_LEN +
X25_MAX_CUD_LEN;
break;
- case X25_CALL_ACCEPTED:
- len += 1 + X25_MAX_FAC_LEN + X25_MAX_CUD_LEN;
+ case X25_CALL_ACCEPTED: /* fast sel with no restr on resp */
+ if(x25->facilities.reverse & 0x80) {
+ len += 1 + X25_MAX_FAC_LEN + X25_MAX_CUD_LEN;
+ } else {
+ len += 1 + X25_MAX_FAC_LEN;
+ }
break;
case X25_CLEAR_REQUEST:
case X25_RESET_REQUEST:
@@ -203,9 +209,16 @@ void x25_write_internal(struct sock *sk, int frametype)
x25->vc_facil_mask);
dptr = skb_put(skb, len);
memcpy(dptr, facilities, len);
- dptr = skb_put(skb, x25->calluserdata.cudlength);
- memcpy(dptr, x25->calluserdata.cuddata,
- x25->calluserdata.cudlength);
+
+ /* fast select with no restriction on response
+ allows call user data. Userland must
+ ensure it is ours and not theirs */
+ if(x25->facilities.reverse & 0x80) {
+ dptr = skb_put(skb,
+ x25->calluserdata.cudlength);
+ memcpy(dptr, x25->calluserdata.cuddata,
+ x25->calluserdata.cudlength);
+ }
x25->calluserdata.cudlength = 0;
break;