X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fax25%2Fax25_ip.c;h=a0c9956b5b23ec52bfa5716ed8e9b12d97eded99;hb=0954b59d9f4b2dcc59f28d1f64c3a21062a64372;hp=cf0c47a265304bc94cc391c7c92a10be16de14ed;hpb=3d2c978e0cd8b1157f9eebd13062d61fb7a75ad5;p=pandora-kernel.git

diff --git a/net/ax25/ax25_ip.c b/net/ax25/ax25_ip.c
index cf0c47a26530..a0c9956b5b23 100644
--- a/net/ax25/ax25_ip.c
+++ b/net/ax25/ax25_ip.c
@@ -232,9 +232,24 @@ int ax25_rebuild_header(struct sk_buff *skb)
 
 #endif
 
+static bool ax25_validate_header(const char *header, unsigned int len)
+{
+	ax25_digi digi;
+
+	if (!len)
+		return false;
+
+	if (header[0])
+		return true;
+
+	return ax25_addr_parse(header + 1, len - 1, NULL, NULL, &digi, NULL,
+			       NULL);
+}
+
 const struct header_ops ax25_header_ops = {
 	.create = ax25_hard_header,
 	.rebuild = ax25_rebuild_header,
+	.validate = ax25_validate_header,
 };
 
 EXPORT_SYMBOL(ax25_hard_header);