Merge branch 'for_rmk' of git://git.mnementh.co.uk/linux-2.6-im into devel

[mirror_ubuntu-zesty-kernel.git] / net / rose / af_rose.c

diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index a7f1ce11bc22d140d52526c11816973d05683729..0c1cc76128006e81d39b663f994de9e78f8539f5 100644 (file)
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -1072,6 +1072,10 @@ 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;
 
@@ -1265,6 +1269,12 @@ static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
        skb_reset_transport_header(skb);
        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;