size_t size;
int lv, err, addr_len = msg->msg_namelen;
+ /* AX.25 empty data frame has no meaning : don't send */
+ if (len == 0) {
+ return (0);
+ }
+
if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
return -EINVAL;
skb_reset_transport_header(skb);
copied = skb->len;
+ /* AX.25 empty data frame has no meaning : ignore it */
+ if (copied == 0) {
+ err = copied;
+ skb_free_datagram(sk, skb);
+ goto out;
+ }
+
if (copied > size) {
copied = size;
msg->msg_flags |= MSG_TRUNC;