From 44b1e6b5f9a93cc2ba024e09cf137d5f1b5f8426 Mon Sep 17 00:00:00 2001
From: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Date: Tue, 21 Apr 2009 23:26:24 +0000
Subject: af_iucv: Modify iucv msg target class using control msghdr
Allow 'classification' of socket data that is sent or received over
an af_iucv socket. For classification of data, the target class of an
(native) iucv message is used.
This patch provides the cmsg interface for iucv_sock_recvmsg() and
iucv_sock_sendmsg(). Applications can use the msg_control field of
struct msghdr to set or get the target class as a
"socket control message" (SCM/CMSG).
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>
---
include/net/iucv/af_iucv.h | 3 +++
1 file changed, 3 insertions(+)
(limited to 'include/net')
diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h
index 78a7276..b57739e 100644
--- a/include/net/iucv/af_iucv.h
+++ b/include/net/iucv/af_iucv.h
@@ -79,6 +79,9 @@ struct iucv_sock {
/* iucv socket options (SOL_IUCV) */
#define SO_IPRMDATA_MSG 0x0080 /* send/recv IPRM_DATA msgs */
+/* iucv related control messages (scm) */
+#define SCM_IUCV_TRGCLS 0x0001 /* target class control message */
+
struct iucv_sock_list {
struct hlist_head head;
rwlock_t lock;
--
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