af_iucv: add sockopt() to enable/disable use of IPRM_DATA msgs

Provide the socket operations getsocktopt() and setsockopt() to enable/disable
sending of data in the parameter list of IUCV messages.
The patch sets respective flag only.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/socket.h b/include/linux/socket.h
index 42a0396f2c59..d2310cb45d2f 100644
--- a/include/linux/socket.h
+++ b/include/linux/socket.h
@@ -303,6 +303,7 @@ struct ucred {
 #define SOL_BLUETOOTH   274
 #define SOL_PNPIPE      275
 #define SOL_RDS         276
+#define SOL_IUCV        277
 
 /* IPX options */
 #define IPX_TYPE        1
diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h
index 85f80eadfa35..78a72764aeff 100644
--- a/include/net/iucv/af_iucv.h
+++ b/include/net/iucv/af_iucv.h
@@ -73,8 +73,12 @@ struct iucv_sock {
         struct sk_buff_head     backlog_skb_q;
         struct sock_msg_q       message_q;
         unsigned int            send_tag;
+        u8                      flags;
 };
 
+/* iucv socket options (SOL_IUCV) */
+#define SO_IPRMDATA_MSG 0x0080          /* send/recv IPRM_DATA msgs */
+
 struct iucv_sock_list {
         struct hlist_head head;
         rwlock_t          lock;