iscsi tools: use open-isns services

This replaces the native isns code with open-isns's libisns.
I included the open-isns code in the open-iscsi tarball
to make distribution easier since some distros use different
isns clients and may not want to carry open-isns.
This is based on open-isns commit
5e09f36d3446e41de0b8361601ffec4cd140d513.

Changes in iSNS behavior/use:

- To do discovery you must pass the ip and optionally the
port to iscsiadm:

iscsiadm -m discovery -t st -p 10.15.0.9

This command accepts the same ops as sendtargets so you can
add/remove/update the node records that are created.

It also supports ifaces properly now.

- isns.address and isns.port in iscsid.conf are no longer
used.

- ESI is temporarily not supported. This will be fixed in the
next patch when SCNs support is added.

- The iscsiadm isns discovery command is not marked as stable.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/list.h b/include/list.h
index bbf3425..a59ca00 100644
--- a/include/list.h
+++ b/include/list.h
@@ -11,7 +11,7 @@
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
 #endif
 
-#define container_of(ptr, type, member) ({			\
+#define list_container_of(ptr, type, member) ({		\
         const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
         (type *)( (char *)__mptr - offsetof(type,member) );})
 
@@ -36,7 +36,7 @@ static inline int list_empty(const struct list_head *head)
 }
 
 #define list_entry(ptr, type, member) \
-	container_of(ptr, type, member)
+	list_container_of(ptr, type, member)
 
 #define list_for_each(pos, head) \
 	for (pos = (head)->next; pos != (head); pos = pos->next)