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authorUrsula Braun <ursula.braun@de.ibm.com>2012-02-08 00:19:48 +0000
committerDavid S. Miller <davem@davemloft.net>2012-02-08 18:50:19 -0500
commit51363b8751a673a00ad48eea895266396d53fa52 (patch)
treeea8b4278a7a5115ee848bac4b33e5f0f44369488 /include/net/iucv/af_iucv.h
parent800c5eb7b5eba6cb2a32738d763fd59f0fbcdde4 (diff)
downloadlwn-51363b8751a673a00ad48eea895266396d53fa52.tar.gz
lwn-51363b8751a673a00ad48eea895266396d53fa52.zip
af_iucv: allow retrieval of maximum message size
For HS transport the maximum message size depends on the MTU-size of the HS-device bound to the AF_IUCV socket. This patch adds a getsockopt option MSGSIZE returning the maximum message size that can be handled for this AF_IUCV socket. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/iucv/af_iucv.h')
-rw-r--r--include/net/iucv/af_iucv.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h
index a1517887aeac..2e1d5ecc2d1b 100644
--- a/include/net/iucv/af_iucv.h
+++ b/include/net/iucv/af_iucv.h
@@ -132,6 +132,7 @@ struct iucv_sock {
/* iucv socket options (SOL_IUCV) */
#define SO_IPRMDATA_MSG 0x0080 /* send/recv IPRM_DATA msgs */
#define SO_MSGLIMIT 0x1000 /* get/set IUCV MSGLIMIT */
+#define SO_MSGSIZE 0x0800 /* get maximum msgsize */
/* iucv related control messages (scm) */
#define SCM_IUCV_TRGCLS 0x0001 /* target class control message */