X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;ds=sidebyside;f=kernel%2Fnet%2Fax25%2Fax25_ip.c;fp=kernel%2Fnet%2Fax25%2Fax25_ip.c;h=2fa3be96510161190365ff59b48ec8a293037853;hb=52f993b8e89487ec9ee15a7fb4979e0f09a45b27;hp=b563a3f5f2a8a33932418965920ed58b80511f88;hpb=c189ccac5702322ed843fe17057035b7222a59b6;p=kvmfornfv.git

diff --git a/kernel/net/ax25/ax25_ip.c b/kernel/net/ax25/ax25_ip.c
index b563a3f5f..2fa3be965 100644
--- a/kernel/net/ax25/ax25_ip.c
+++ b/kernel/net/ax25/ax25_ip.c
@@ -228,8 +228,23 @@ netdev_tx_t ax25_ip_xmit(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,
+	.validate = ax25_validate_header,
 };
 
 EXPORT_SYMBOL(ax25_header_ops);