Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux...

[linux-2.6-omap-h63xx.git] / include / scsi / libiscsi.h

diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index 5e75bb7f311c5b57fbca77fe801ce504dd019d3f..7360e1916e75f0e8c843cbb7640b41f03baeaebb 100644 (file)
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -30,6 +30,7 @@
 #include <linux/workqueue.h>
 #include <scsi/iscsi_proto.h>
 #include <scsi/iscsi_if.h>
+#include <scsi/scsi_transport_iscsi.h>
 
 struct scsi_transport_template;
 struct scsi_host_template;
@@ -70,12 +71,12 @@ enum {
 /* Connection suspend "bit" */
 #define ISCSI_SUSPEND_BIT              1
 
-#define ISCSI_ITT_MASK                 (0x1fff)
+#define ISCSI_ITT_MASK                 0x1fff
 #define ISCSI_TOTAL_CMDS_MAX           4096
 /* this must be a power of two greater than ISCSI_MGMT_CMDS_MAX */
 #define ISCSI_TOTAL_CMDS_MIN           16
 #define ISCSI_AGE_SHIFT                        28
-#define ISCSI_AGE_MASK                 (0xf << ISCSI_AGE_SHIFT)
+#define ISCSI_AGE_MASK                 0xf
 
 #define ISCSI_ADDRESS_BUF_LEN          64
 
@@ -93,24 +94,38 @@ enum {
        ISCSI_TASK_RUNNING,
 };
 
+struct iscsi_r2t_info {
+       __be32                  ttt;            /* copied from R2T */
+       __be32                  exp_statsn;     /* copied from R2T */
+       uint32_t                data_length;    /* copied from R2T */
+       uint32_t                data_offset;    /* copied from R2T */
+       int                     data_count;     /* DATA-Out payload progress */
+       int                     datasn;
+       /* LLDs should set/update these values */
+       int                     sent;           /* R2T sequence progress */
+};
+
 struct iscsi_task {
        /*
         * Because LLDs allocate their hdr differently, this is a pointer
         * and length to that storage. It must be setup at session
         * creation time.
         */
-       struct iscsi_cmd        *hdr;
+       struct iscsi_hdr        *hdr;
        unsigned short          hdr_max;
        unsigned short          hdr_len;        /* accumulated size of hdr used */
+       /* copied values in case we need to send tmfs */
+       itt_t                   hdr_itt;
+       __be32                  cmdsn;
+       uint8_t                 lun[8];
+
        int                     itt;            /* this ITT */
 
-       uint32_t                unsol_datasn;
        unsigned                imm_count;      /* imm-data (bytes)   */
-       unsigned                unsol_count;    /* unsolicited (bytes)*/
        /* offset in unsolicited stream (bytes); */
-       unsigned                unsol_offset;
-       unsigned                data_count;     /* remaining Data-Out */
+       struct iscsi_r2t_info   unsol_r2t;
        char                    *data;          /* mgmt payload */
+       unsigned                data_count;
        struct scsi_cmnd        *sc;            /* associated SCSI cmd*/
        struct iscsi_conn       *conn;          /* used connection    */
 
@@ -121,6 +136,11 @@ struct iscsi_task {
        void                    *dd_data;       /* driver/transport data */
 };
 
+static inline int iscsi_task_has_unsol_data(struct iscsi_task *task)
+{
+       return task->unsol_r2t.data_length > task->unsol_r2t.sent;
+}
+
 static inline void* iscsi_next_hdr(struct iscsi_task *task)
 {
        return (void*)task->hdr + task->hdr_len;
@@ -287,6 +307,11 @@ struct iscsi_session {
        struct iscsi_pool       cmdpool;        /* PDU's pool */
 };
 
+enum {
+       ISCSI_HOST_SETUP,
+       ISCSI_HOST_REMOVED,
+};
+
 struct iscsi_host {
        char                    *initiatorname;
        /* hw address or netdev iscsi connection is bound to */
@@ -295,6 +320,12 @@ struct iscsi_host {
        /* local address */
        int                     local_port;
        char                    local_address[ISCSI_ADDRESS_BUF_LEN];
+
+       wait_queue_head_t       session_removal_wq;
+       /* protects sessions and state */
+       spinlock_t              lock;
+       int                     num_sessions;
+       int                     state;
 };
 
 /*
@@ -302,7 +333,7 @@ struct iscsi_host {
  */
 extern int iscsi_change_queue_depth(struct scsi_device *sdev, int depth);
 extern int iscsi_eh_abort(struct scsi_cmnd *sc);
-extern int iscsi_eh_host_reset(struct scsi_cmnd *sc);
+extern int iscsi_eh_target_reset(struct scsi_cmnd *sc);
 extern int iscsi_eh_device_reset(struct scsi_cmnd *sc);
 extern int iscsi_queuecommand(struct scsi_cmnd *sc,
                              void (*done)(struct scsi_cmnd *));
@@ -351,6 +382,8 @@ extern void iscsi_conn_stop(struct iscsi_cls_conn *, int);
 extern int iscsi_conn_bind(struct iscsi_cls_session *, struct iscsi_cls_conn *,
                           int);
 extern void iscsi_conn_failure(struct iscsi_conn *conn, enum iscsi_err err);
+extern void iscsi_session_failure(struct iscsi_cls_session *cls_session,
+                                 enum iscsi_err err);
 extern int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
                                enum iscsi_param param, char *buf);
 extern void iscsi_suspend_tx(struct iscsi_conn *conn);
@@ -363,8 +396,9 @@ extern void iscsi_suspend_tx(struct iscsi_conn *conn);
  * pdu and task processing
  */
 extern void iscsi_update_cmdsn(struct iscsi_session *, struct iscsi_nopin *);
-extern void iscsi_prep_unsolicit_data_pdu(struct iscsi_task *,
-                                       struct iscsi_data *hdr);
+extern void iscsi_prep_data_out_pdu(struct iscsi_task *task,
+                                   struct iscsi_r2t_info *r2t,
+                                   struct iscsi_data *hdr);
 extern int iscsi_conn_send_pdu(struct iscsi_cls_conn *, struct iscsi_hdr *,
                                char *, uint32_t);
 extern int iscsi_complete_pdu(struct iscsi_conn *, struct iscsi_hdr *,