iscsi-target: Initial traditional TCP conversion to iscsit_transport

This patch performs the initial conversion of existing traditional iscsi
to use iscsit_transport API callers.  This includes:

- iscsi-np cleanups for iscsit_transport_type
- Add iscsi-np transport calls w/ ->iscsit_setup_up() and ->iscsit_free_np()
- Convert login thread process context to use ->iscsit_accept_np() for
  connections with pre-allocated struct iscsi_conn
- Convert existing socket accept code to iscsit_accept_np()
- Convert login RX/TX callers to use ->iscsit_get_login_rx() and
  ->iscsit_put_login_tx() to exchange request/response PDUs
- Convert existing socket login RX/TX calls into iscsit_get_login_rx()
  and iscsit_put_login_tx()
- Change iscsit_close_connection() to invoke ->iscsit_free_conn() +
  iscsit_put_transport() calls.
- Add iscsit_register_transport() + iscsit_unregister_transport() calls
  to module init/exit

v4 changes:

- Add missing iscsit_put_transport() call in iscsi_target_setup_login_socket()
  failure case

v2 changes:

- Update module init/exit to use register_transport() + unregister_transport()

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

1 files changed, 7 insertions, 4 deletions

diff --git a/drivers/target/iscsi/iscsi_target_nego.h b/drivers/target/iscsi/iscsi_target_nego.h
index 92e133a5158..f021cbd330e 100644
--- a/drivers/target/iscsi/iscsi_target_nego.h
+++ b/drivers/target/iscsi/iscsi_target_nego.h
@@ -7,11 +7,14 @@
 extern void convert_null_to_semi(char *, int);
 extern int extract_param(const char *, const char *, unsigned int, char *,
 		unsigned char *);
-extern struct iscsi_login *iscsi_target_init_negotiation(
-		struct iscsi_np *, struct iscsi_conn *, char *);
+extern int iscsi_target_check_login_request(struct iscsi_conn *,
+		struct iscsi_login *);
+extern int iscsi_target_get_initial_payload(struct iscsi_conn *,
+		struct iscsi_login *);
+extern int iscsi_target_locate_portal(struct iscsi_np *, struct iscsi_conn *,
+		struct iscsi_login *);
 extern int iscsi_target_start_negotiation(
 		struct iscsi_login *, struct iscsi_conn *);
-extern void iscsi_target_nego_release(
-		struct iscsi_login *, struct iscsi_conn *);
+extern void iscsi_target_nego_release(struct iscsi_conn *);
 
 #endif /* ISCSI_TARGET_NEGO_H */