X25: Enable setting of cause and diagnostic fields
Adds SIOCX25SCAUSEDIAG, allowing X.25 programs to set the cause and
diagnostic fields.
Normally used to indicate status upon closing connections.
Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/x25.h b/include/linux/x25.h
index d035e4e..6450a7f 100644
--- a/include/linux/x25.h
+++ b/include/linux/x25.h
@@ -25,6 +25,7 @@
#define SIOCX25SENDCALLACCPT (SIOCPROTOPRIVATE + 9)
#define SIOCX25GDTEFACILITIES (SIOCPROTOPRIVATE + 10)
#define SIOCX25SDTEFACILITIES (SIOCPROTOPRIVATE + 11)
+#define SIOCX25SCAUSEDIAG (SIOCPROTOPRIVATE + 12)
/*
* Values for {get,set}sockopt.
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 39ce03e..ac7dba4 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -1471,6 +1471,17 @@
break;
}
+ case SIOCX25SCAUSEDIAG: {
+ struct x25_causediag causediag;
+ rc = -EFAULT;
+ if (copy_from_user(&causediag, argp, sizeof(causediag)))
+ break;
+ x25->causediag = causediag;
+ rc = 0;
+ break;
+
+ }
+
case SIOCX25SCUDMATCHLEN: {
struct x25_subaddr sub_addr;
rc = -EINVAL;
@@ -1639,6 +1650,7 @@
case SIOCX25GCALLUSERDATA:
case SIOCX25SCALLUSERDATA:
case SIOCX25GCAUSEDIAG:
+ case SIOCX25SCAUSEDIAG:
case SIOCX25SCUDMATCHLEN:
case SIOCX25CALLACCPTAPPRV:
case SIOCX25SENDCALLACCPT:
diff --git a/net/x25/x25_subr.c b/net/x25/x25_subr.c
index 511a598..352b32d 100644
--- a/net/x25/x25_subr.c
+++ b/net/x25/x25_subr.c
@@ -225,6 +225,12 @@
break;
case X25_CLEAR_REQUEST:
+ dptr = skb_put(skb, 3);
+ *dptr++ = frametype;
+ *dptr++ = x25->causediag.cause;
+ *dptr++ = x25->causediag.diagnostic;
+ break;
+
case X25_RESET_REQUEST:
dptr = skb_put(skb, 3);
*dptr++ = frametype;