[SCSI] libiscsi, iscsi_tcp, iscsi_iser: check that burst lengths are valid.

[cascardo/linux.git] / include / scsi / libiscsi.h

diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index ba27608..4900650 100644 (file)
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -60,6 +60,7 @@ struct iscsi_nopin;
 #define TMABORT_SUCCESS                        0x1
 #define TMABORT_FAILED                 0x2
 #define TMABORT_TIMEDOUT               0x3
+#define TMABORT_NOT_FOUND              0x4
 
 /* Connection suspend "bit" */
 #define ISCSI_SUSPEND_BIT              1
@@ -83,6 +84,12 @@ struct iscsi_mgmt_task {
        struct list_head        running;
 };
 
+enum {
+       ISCSI_TASK_COMPLETED,
+       ISCSI_TASK_PENDING,
+       ISCSI_TASK_RUNNING,
+};
+
 struct iscsi_cmd_task {
        /*
         * Becuae LLDs allocate their hdr differently, this is a pointer to
@@ -95,12 +102,16 @@ struct iscsi_cmd_task {
        uint32_t                unsol_datasn;
        int                     imm_count;      /* imm-data (bytes)   */
        int                     unsol_count;    /* unsolicited (bytes)*/
+       /* offset in unsolicited stream (bytes); */
+       int                     unsol_offset;
        int                     data_count;     /* remaining Data-Out */
        struct scsi_cmnd        *sc;            /* associated SCSI cmd*/
        int                     total_length;
        struct iscsi_conn       *conn;          /* used connection    */
        struct iscsi_mgmt_task  *mtask;         /* tmf mtask in progr */
 
+       /* state set/tested under session->lock */
+       int                     state;
        struct list_head        running;        /* running cmd list */
        void                    *dd_data;       /* driver/transport data */
 };
@@ -126,6 +137,14 @@ struct iscsi_conn {
        int                     id;             /* CID */
        struct list_head        item;           /* maintains list of conns */
        int                     c_stage;        /* connection state */
+       /*
+        * Preallocated buffer for pdus that have data but do not
+        * originate from scsi-ml. We never have two pdus using the
+        * buffer at the same time. It is only allocated to
+        * the default max recv size because the pdus we support
+        * should always fit in this buffer
+        */
+       char                    *data;
        struct iscsi_mgmt_task  *login_mtask;   /* mtask used for login/text */
        struct iscsi_mgmt_task  *mtask;         /* xmit mtask in progress */
        struct iscsi_cmd_task   *ctask;         /* xmit ctask in progress */
@@ -134,7 +153,7 @@ struct iscsi_conn {
        struct kfifo            *immqueue;      /* immediate xmit queue */
        struct kfifo            *mgmtqueue;     /* mgmt (control) xmit queue */
        struct list_head        mgmt_run_list;  /* list of control tasks */
-       struct kfifo            *xmitqueue;     /* data-path cmd queue */
+       struct list_head        xmitqueue;      /* data-path cmd queue */
        struct list_head        run_list;       /* list of cmds in progress */
        struct work_struct      xmitwork;       /* per-conn. xmit workqueue */
        /*
@@ -273,8 +292,7 @@ extern int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
 extern int iscsi_check_assign_cmdsn(struct iscsi_session *,
                                    struct iscsi_nopin *);
 extern void iscsi_prep_unsolicit_data_pdu(struct iscsi_cmd_task *,
-                                       struct iscsi_data *hdr,
-                                       int transport_data_cnt);
+                                       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 *,