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Revert "ax25: zero length frame filtering in AX25"

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This reverts commit f99bcff7a2.

Like netrom, Alan Cox says that zero lengths have real meaning
and are useful in this protocol.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2009-03-27 17:23:42 -07:00
parent 80e20f6f36
commit c44a436664
1 changed files with 0 additions and 12 deletions
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12
net/ax25/af_ax25.c
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@ -1435,11 +1435,6 @@ static int ax25_sendmsg(struct kiocb *iocb, struct socket *sock,
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;
@ -1639,13 +1634,6 @@ static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock,
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;