[AF_IUCV]: Implementation of a skb backlog queue

With the inital implementation we missed to implement a skb backlog
queue . The result is that socket receive processing tossed packets.
Since AF_IUCV connections are working synchronously it leads to
connection hangs. Problems with read, close and select also occured.

Using a skb backlog queue is fixing all of these problems .

Signed-off-by: Jennifer Hunt <jenhunt@us.ibm.com>
Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h
index 04d1abb72d25..f9bd11be1891 100644
--- a/include/net/iucv/af_iucv.h
+++ b/include/net/iucv/af_iucv.h
@@ -28,6 +28,7 @@ enum {
         IUCV_LISTEN,
         IUCV_SEVERED,
         IUCV_DISCONN,
+        IUCV_CLOSING,
         IUCV_CLOSED
 };
 
@@ -62,6 +63,7 @@ struct iucv_sock {
         struct sock             *parent;
         struct iucv_path        *path;
         struct sk_buff_head     send_skb_q;
+        struct sk_buff_head     backlog_skb_q;
         unsigned int            send_tag;
 };