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Subject[PATCH] X25: Enable setting of cause and diagnostic fields
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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>


diff -uprN -X a/Documentation/dontdiff a/include/linux/x25.h
b/include/linux/x25.h
--- a/include/linux/x25.h 2009-11-11 14:03:26.659663301 +1100
+++ b/include/linux/x25.h 2009-11-11 16:05:06.625958557 +1100
@@ -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 -uprN -X a/Documentation/dontdiff a/net/x25/af_x25.c b/net/x25/af_x25.c
--- a/net/x25/af_x25.c 2009-11-11 14:02:44.027061001 +1100
+++ b/net/x25/af_x25.c 2009-11-11 16:22:51.374077963 +1100
@@ -1430,6 +1430,17 @@ static int x25_ioctl(struct socket *sock
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;
diff -uprN -X a/Documentation/dontdiff a/net/x25/x25_subr.c b/net/x25/x25_subr.c
--- a/net/x25/x25_subr.c 2009-11-11 14:02:44.026061128 +1100
+++ b/net/x25/x25_subr.c 2009-11-11 16:28:30.316150252 +1100
@@ -225,6 +225,12 @@ void x25_write_internal(struct sock *sk,
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;

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