Commit 6fd4777a authored by David S. Miller's avatar David S. Miller
Browse files

Revert "rose: zero length frame filtering in af_rose.c"

This reverts commit 244f46ae


Alan Cox did the research, and just like the other radio protocols
zero-length frames have meaning because at the top level ROSE is
X.25 PLP.

So this zero-length filtering is invalid.
Signed-off-by: default avatarDavid S. Miller <>
parent 239795ad
......@@ -1072,10 +1072,6 @@ static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
unsigned char *asmptr;
int n, size, qbit = 0;
/* ROSE empty 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;
......@@ -1273,12 +1269,6 @@ static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
copied = skb->len;
/* ROSE empty frame has no meaning : ignore it */
if (copied == 0) {
skb_free_datagram(sk, skb);
return copied;
if (copied > size) {
copied = size;
msg->msg_flags |= MSG_TRUNC;
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