Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (276 commits)
  [SCSI] zfcp: Trigger logging in the FCP channel on qdio error conditions
  [SCSI] zfcp: Introduce experimental support for DIF/DIX
  [SCSI] zfcp: Enable data division support for FCP devices
  [SCSI] zfcp: Prevent access on uninitialized memory.
  [SCSI] zfcp: Post events through FC transport class
  [SCSI] zfcp: Cleanup QDIO attachment and improve processing.
  [SCSI] zfcp: Cleanup function parameters for sbal value.
  [SCSI] zfcp: Use correct width for timer_interval field
  [SCSI] zfcp: Remove SCSI device when removing unit
  [SCSI] zfcp: Use memdup_user and kstrdup
  [SCSI] zfcp: Fix retry after failed "open port" erp action
  [SCSI] zfcp: Fail erp after timeout
  [SCSI] zfcp: Use forced_reopen in terminate_rport_io callback
  [SCSI] zfcp: Register SCSI devices after successful fc_remote_port_add
  [SCSI] zfcp: Do not try "forced close" when port is already closed
  [SCSI] zfcp: Do not unblock rport from REOPEN_PORT_FORCED
  [SCSI] sd: add support for runtime PM
  [SCSI] implement runtime Power Management
  [SCSI] convert to the new PM framework
  [SCSI] Unify SAM_ and SAM_STAT_ macros
  ...

12 files changed, 236 insertions, 72 deletions

diff --git a/include/scsi/fc/fc_els.h b/include/scsi/fc/fc_els.h
index f94328132a26..481abbd48e39 100644
--- a/include/scsi/fc/fc_els.h
+++ b/include/scsi/fc/fc_els.h
@@ -191,6 +191,7 @@ enum fc_els_rjt_reason {
         ELS_RJT_UNAB =          0x09,   /* unable to perform command request */
         ELS_RJT_UNSUP =         0x0b,   /* command not supported */
         ELS_RJT_INPROG =        0x0e,   /* command already in progress */
+        ELS_RJT_FIP =           0x20,   /* FIP error */
         ELS_RJT_VENDOR =        0xff,   /* vendor specific error */
 };
 
@@ -212,6 +213,7 @@ enum fc_els_rjt_explan {
         ELS_EXPL_UNAB_DATA =    0x2a,   /* unable to supply requested data */
         ELS_EXPL_UNSUPR =       0x2c,   /* Request not supported */
         ELS_EXPL_INV_LEN =      0x2d,   /* Invalid payload length */
+        ELS_EXPL_NOT_NEIGHBOR = 0x62,   /* VN2VN_Port not in neighbor set */
         /* TBD - above definitions incomplete */
 };
 
@@ -405,6 +407,15 @@ struct fc_els_prli {
 };
 
 /*
+ * ELS_PRLO - Process logout request and response.
+ */
+struct fc_els_prlo {
+        __u8            prlo_cmd;       /* command */
+        __u8            prlo_obs;       /* obsolete, but shall be set to 10h */
+        __be16          prlo_len;       /* payload length */
+};
+
+/*
  * ELS_ADISC payload
  */
 struct fc_els_adisc {
diff --git a/include/scsi/fc/fc_fcoe.h b/include/scsi/fc/fc_fcoe.h
index e6ad3d2ae475..d5dcd6062815 100644
--- a/include/scsi/fc/fc_fcoe.h
+++ b/include/scsi/fc/fc_fcoe.h
@@ -22,23 +22,18 @@
 
 /*
  * FCoE - Fibre Channel over Ethernet.
+ * See T11 FC-BB-5 Rev 2.00 (09-056v5.pdf)
  */
 
 /*
- * FC_FCOE_OUI hasn't been standardized yet.   XXX TBD.
+ * Default FC_FCOE_OUI / FC-MAP value.
  */
-#ifndef FC_FCOE_OUI
-#define FC_FCOE_OUI     0x0efc00        /* upper 24 bits of FCOE dest MAC TBD */
-#endif
+#define FC_FCOE_OUI     0x0efc00        /* upper 24 bits of FCOE MAC */
 
 /*
- * The destination MAC address for the fabric login may get a different OUI.
- * This isn't standardized yet.
+ * Fabric Login (FLOGI) MAC for non-FIP use.  Non-FIP use is deprecated.
  */
-#ifndef FC_FCOE_FLOGI_MAC
-/* gateway MAC - TBD */
 #define FC_FCOE_FLOGI_MAC { 0x0e, 0xfc, 0x00, 0xff, 0xff, 0xfe }
-#endif
 
 #define FC_FCOE_VER     0                       /* version */
 
@@ -51,8 +46,6 @@
 
 /*
  * FCoE frame header - 14 bytes
- *
- * This is the August 2007 version of the FCoE header as defined by T11.
  * This follows the VLAN header, which includes the ethertype.
  */
 struct fcoe_hdr {
diff --git a/include/scsi/fc/fc_fip.h b/include/scsi/fc/fc_fip.h
index 17baa19380f0..ae25d4ab2548 100644
--- a/include/scsi/fc/fc_fip.h
+++ b/include/scsi/fc/fc_fip.h
@@ -17,9 +17,12 @@
 #ifndef _FC_FIP_H_
 #define _FC_FIP_H_
 
+#include <scsi/fc/fc_ns.h>
+
 /*
  * This version is based on:
  * http://www.t11.org/ftp/t11/pub/fc/bb-5/08-543v1.pdf
+ * and T11 FC-BB-6 10-019v4.pdf (June 2010 VN2VN proposal)
  */
 
 #define FIP_DEF_PRI     128     /* default selection priority */
@@ -29,11 +32,24 @@
 #define FIP_FCF_FUZZ    100     /* random time added by FCF (mS) */
 
 /*
+ * VN2VN proposed-standard values.
+ */
+#define FIP_VN_FC_MAP   0x0efd00 /* MAC OUI for VN2VN use */
+#define FIP_VN_PROBE_WAIT 100   /* interval between VN2VN probes (ms) */
+#define FIP_VN_ANN_WAIT 400     /* interval between VN2VN announcements (ms) */
+#define FIP_VN_RLIM_INT 10000   /* interval between probes when rate limited */
+#define FIP_VN_RLIM_COUNT 10    /* number of probes before rate limiting */
+#define FIP_VN_BEACON_INT 8000  /* interval between VN2VN beacons */
+#define FIP_VN_BEACON_FUZZ 100  /* random time to add to beacon period (ms) */
+
+/*
  * Multicast MAC addresses.  T11-adopted.
  */
-#define FIP_ALL_FCOE_MACS       ((u8[6]) { 1, 0x10, 0x18, 1, 0, 0 })
-#define FIP_ALL_ENODE_MACS      ((u8[6]) { 1, 0x10, 0x18, 1, 0, 1 })
-#define FIP_ALL_FCF_MACS        ((u8[6]) { 1, 0x10, 0x18, 1, 0, 2 })
+#define FIP_ALL_FCOE_MACS       ((__u8[6]) { 1, 0x10, 0x18, 1, 0, 0 })
+#define FIP_ALL_ENODE_MACS      ((__u8[6]) { 1, 0x10, 0x18, 1, 0, 1 })
+#define FIP_ALL_FCF_MACS        ((__u8[6]) { 1, 0x10, 0x18, 1, 0, 2 })
+#define FIP_ALL_VN2VN_MACS      ((__u8[6]) { 1, 0x10, 0x18, 1, 0, 4 })
+#define FIP_ALL_P2P_MACS        ((__u8[6]) { 1, 0x10, 0x18, 1, 0, 5 })
 
 #define FIP_VER         1               /* version for fip_header */
 
@@ -60,6 +76,7 @@ enum fip_opcode {
         FIP_OP_LS =     2,              /* Link Service request or reply */
         FIP_OP_CTRL =   3,              /* Keep Alive / Link Reset */
         FIP_OP_VLAN =   4,              /* VLAN discovery */
+        FIP_OP_VN2VN =  5,              /* VN2VN operation */
         FIP_OP_VENDOR_MIN = 0xfff8,     /* min vendor-specific opcode */
         FIP_OP_VENDOR_MAX = 0xfffe,     /* max vendor-specific opcode */
 };
@@ -97,11 +114,23 @@ enum fip_vlan_subcode {
 };
 
 /*
+ * Subcodes for FIP_OP_VN2VN.
+ */
+enum fip_vn2vn_subcode {
+        FIP_SC_VN_PROBE_REQ = 1,        /* probe request */
+        FIP_SC_VN_PROBE_REP = 2,        /* probe reply */
+        FIP_SC_VN_CLAIM_NOTIFY = 3,     /* claim notification */
+        FIP_SC_VN_CLAIM_REP = 4,        /* claim response */
+        FIP_SC_VN_BEACON = 5,           /* beacon */
+};
+
+/*
  * flags in header fip_flags.
  */
 enum fip_flag {
         FIP_FL_FPMA =   0x8000,         /* supports FPMA fabric-provided MACs */
         FIP_FL_SPMA =   0x4000,         /* supports SPMA server-provided MACs */
+        FIP_FL_REC_OR_P2P = 0x0008,     /* configured addr or point-to-point */
         FIP_FL_AVAIL =  0x0004,         /* available for FLOGI/ELP */
         FIP_FL_SOL =    0x0002,         /* this is a solicited message */
         FIP_FL_FPORT =  0x0001,         /* sent from an F port */
@@ -130,6 +159,7 @@ enum fip_desc_type {
         FIP_DT_FKA =    12,             /* advertisement keep-alive period */
         FIP_DT_VENDOR = 13,             /* vendor ID */
         FIP_DT_VLAN =   14,             /* vlan number */
+        FIP_DT_FC4F =   15,             /* FC-4 features */
         FIP_DT_LIMIT,                   /* max defined desc_type + 1 */
         FIP_DT_VENDOR_BASE = 128,       /* first vendor-specific desc_type */
 };
@@ -229,6 +259,16 @@ enum fip_fka_flags {
 /* FIP_DT_FKA flags */
 
 /*
+ * FIP_DT_FC4F - FC-4 features.
+ */
+struct fip_fc4_feat {
+        struct fip_desc fd_desc;
+        __u8            fd_resvd[2];
+        struct fc_ns_fts fd_fts;
+        struct fc_ns_ff fd_ff;
+} __attribute__((packed));
+
+/*
  * FIP_DT_VENDOR descriptor.
  */
 struct fip_vendor_desc {
diff --git a/include/scsi/fc/fc_ns.h b/include/scsi/fc/fc_ns.h
index e7d3ac497d7d..185015dd1166 100644
--- a/include/scsi/fc/fc_ns.h
+++ b/include/scsi/fc/fc_ns.h
@@ -100,6 +100,13 @@ struct fc_ns_fts {
 };
 
 /*
+ * FC4-features object.
+ */
+struct fc_ns_ff {
+        __be32  fd_feat[FC_NS_TYPES * 4 / FC_NS_BPW]; /* 4-bits per FC-type */
+};
+
+/*
  * GID_PT request.
  */
 struct fc_ns_gid_pt {
diff --git a/include/scsi/fc_encode.h b/include/scsi/fc_encode.h
index 9b4867c9c2d2..6d293c846a46 100644
--- a/include/scsi/fc_encode.h
+++ b/include/scsi/fc_encode.h
@@ -21,6 +21,13 @@
 #define _FC_ENCODE_H_
 #include <asm/unaligned.h>
 
+/*
+ * F_CTL values for simple requests and responses.
+ */
+#define FC_FCTL_REQ     (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)
+#define FC_FCTL_RESP    (FC_FC_EX_CTX | FC_FC_LAST_SEQ | \
+                        FC_FC_END_SEQ | FC_FC_SEQ_INIT)
+
 struct fc_ns_rft {
         struct fc_ns_fid fid;   /* port ID object */
         struct fc_ns_fts fts;   /* FC4-types object */
diff --git a/include/scsi/fc_frame.h b/include/scsi/fc_frame.h
index 4d3e9c7b7c57..4ad02041b667 100644
--- a/include/scsi/fc_frame.h
+++ b/include/scsi/fc_frame.h
@@ -30,6 +30,23 @@
 
 #include <linux/if_ether.h>
 
+/* some helpful macros */
+
+#define ntohll(x) be64_to_cpu(x)
+#define htonll(x) cpu_to_be64(x)
+
+static inline u32 ntoh24(const u8 *p)
+{
+        return (p[0] << 16) | (p[1] << 8) | p[2];
+}
+
+static inline void hton24(u8 *p, u32 v)
+{
+        p[0] = (v >> 16) & 0xff;
+        p[1] = (v >> 8) & 0xff;
+        p[2] = v & 0xff;
+}
+
 /*
  * The fc_frame interface is used to pass frame data between functions.
  * The frame includes the data buffer, length, and SOF / EOF delimiter types.
@@ -51,6 +68,7 @@
 #define fr_sof(fp)      (fr_cb(fp)->fr_sof)
 #define fr_eof(fp)      (fr_cb(fp)->fr_eof)
 #define fr_flags(fp)    (fr_cb(fp)->fr_flags)
+#define fr_encaps(fp)   (fr_cb(fp)->fr_encaps)
 #define fr_max_payload(fp)      (fr_cb(fp)->fr_max_payload)
 #define fr_fsp(fp)      (fr_cb(fp)->fr_fsp)
 #define fr_crc(fp)      (fr_cb(fp)->fr_crc)
@@ -66,9 +84,10 @@ struct fcoe_rcv_info {
         struct fc_fcp_pkt *fr_fsp;      /* for the corresponding fcp I/O */
         u32             fr_crc;
         u16             fr_max_payload; /* max FC payload */
-        enum fc_sof     fr_sof;         /* start of frame delimiter */
-        enum fc_eof     fr_eof;         /* end of frame delimiter */
+        u8              fr_sof;         /* start of frame delimiter */
+        u8              fr_eof;         /* end of frame delimiter */
         u8              fr_flags;       /* flags - see below */
+        u8              fr_encaps;      /* LLD encapsulation info (e.g. FIP) */
         u8              granted_mac[ETH_ALEN]; /* FCoE MAC address */
 };
 
@@ -97,6 +116,7 @@ static inline void fc_frame_init(struct fc_frame *fp)
         fr_dev(fp) = NULL;
         fr_seq(fp) = NULL;
         fr_flags(fp) = 0;
+        fr_encaps(fp) = 0;
 }
 
 struct fc_frame *fc_frame_alloc_fill(struct fc_lport *, size_t payload_len);
@@ -136,13 +156,39 @@ static inline int fc_frame_is_linear(struct fc_frame *fp)
 
 /*
  * Get frame header from message in fc_frame structure.
+ * This version doesn't do a length check.
+ */
+static inline
+struct fc_frame_header *__fc_frame_header_get(const struct fc_frame *fp)
+{
+        return (struct fc_frame_header *)fr_hdr(fp);
+}
+
+/*
+ * Get frame header from message in fc_frame structure.
  * This hides a cast and provides a place to add some checking.
  */
 static inline
 struct fc_frame_header *fc_frame_header_get(const struct fc_frame *fp)
 {
         WARN_ON(fr_len(fp) < sizeof(struct fc_frame_header));
-        return (struct fc_frame_header *) fr_hdr(fp);
+        return __fc_frame_header_get(fp);
+}
+
+/*
+ * Get source FC_ID (S_ID) from frame header in message.
+ */
+static inline u32 fc_frame_sid(const struct fc_frame *fp)
+{
+        return ntoh24(__fc_frame_header_get(fp)->fh_s_id);
+}
+
+/*
+ * Get destination FC_ID (D_ID) from frame header in message.
+ */
+static inline u32 fc_frame_did(const struct fc_frame *fp)
+{
+        return ntoh24(__fc_frame_header_get(fp)->fh_d_id);
 }
 
 /*
diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index 66d377b9c72b..a8631acd37c3 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -313,6 +313,7 @@ enum iscsi_param {
         ISCSI_PARAM_INITIATOR_NAME,
 
         ISCSI_PARAM_TGT_RESET_TMO,
+        ISCSI_PARAM_TARGET_ALIAS,
         /* must always be last */
         ISCSI_PARAM_MAX,
 };
@@ -353,6 +354,7 @@ enum iscsi_param {
 #define ISCSI_ISID                      (1ULL << ISCSI_PARAM_ISID)
 #define ISCSI_INITIATOR_NAME            (1ULL << ISCSI_PARAM_INITIATOR_NAME)
 #define ISCSI_TGT_RESET_TMO             (1ULL << ISCSI_PARAM_TGT_RESET_TMO)
+#define ISCSI_TARGET_ALIAS              (1ULL << ISCSI_PARAM_TARGET_ALIAS)
 
 /* iSCSI HBA params */
 enum iscsi_host_param {
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index 7495c0ba67ee..14be49b44e84 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -42,24 +42,6 @@
 #define FC_EX_TIMEOUT   1       /* Exchange timeout */
 #define FC_EX_CLOSED    2       /* Exchange closed */
 
-/* some helpful macros */
-
-#define ntohll(x) be64_to_cpu(x)
-#define htonll(x) cpu_to_be64(x)
-
-
-static inline u32 ntoh24(const u8 *p)
-{
-        return (p[0] << 16) | (p[1] << 8) | p[2];
-}
-
-static inline void hton24(u8 *p, u32 v)
-{
-        p[0] = (v >> 16) & 0xff;
-        p[1] = (v >> 8) & 0xff;
-        p[2] = v & 0xff;
-}
-
 /**
  * enum fc_lport_state - Local port states
  * @LPORT_ST_DISABLED: Disabled
@@ -97,25 +79,25 @@ enum fc_disc_event {
 /**
  * enum fc_rport_state - Remote port states
  * @RPORT_ST_INIT:    Initialized
+ * @RPORT_ST_FLOGI:   Waiting for FLOGI completion for point-to-multipoint
+ * @RPORT_ST_PLOGI_WAIT:   Waiting for peer to login for point-to-multipoint
  * @RPORT_ST_PLOGI:   Waiting for PLOGI completion
  * @RPORT_ST_PRLI:    Waiting for PRLI completion
  * @RPORT_ST_RTV:     Waiting for RTV completion
  * @RPORT_ST_READY:   Ready for use
- * @RPORT_ST_LOGO:    Remote port logout (LOGO) sent
  * @RPORT_ST_ADISC:   Discover Address sent
  * @RPORT_ST_DELETE:  Remote port being deleted
- * @RPORT_ST_RESTART: Remote port being deleted and will restart
 */
 enum fc_rport_state {
         RPORT_ST_INIT,
+        RPORT_ST_FLOGI,
+        RPORT_ST_PLOGI_WAIT,
         RPORT_ST_PLOGI,
         RPORT_ST_PRLI,
         RPORT_ST_RTV,
         RPORT_ST_READY,
-        RPORT_ST_LOGO,
         RPORT_ST_ADISC,
         RPORT_ST_DELETE,
-        RPORT_ST_RESTART,
 };
 
 /**
@@ -173,6 +155,7 @@ struct fc_rport_libfc_priv {
         u16                        flags;
         #define FC_RP_FLAGS_REC_SUPPORTED       (1 << 0)
         #define FC_RP_FLAGS_RETRY               (1 << 1)
+        #define FC_RP_STARTED                   (1 << 2)
         unsigned int               e_d_tov;
         unsigned int               r_a_tov;
 };
@@ -185,16 +168,18 @@ struct fc_rport_libfc_priv {
  * @rp_state:       Enumeration that tracks progress of PLOGI, PRLI,
  *                  and RTV exchanges
  * @ids:            The remote port identifiers and roles
- * @flags:          REC and RETRY supported flags
+ * @flags:          STARTED, REC and RETRY_SUPPORTED flags
  * @max_seq:        Maximum number of concurrent sequences
  * @disc_id:        The discovery identifier
  * @maxframe_size:  The maximum frame size
  * @retries:        The retry count for the current state
+ * @major_retries:  The retry count for the entire PLOGI/PRLI state machine
  * @e_d_tov:        Error detect timeout value (in msec)
  * @r_a_tov:        Resource allocation timeout value (in msec)
  * @rp_mutex:       The mutex that protects the remote port
  * @retry_work:     Handle for retries
  * @event_callback: Callback when READY, FAILED or LOGO states complete
+ * @rcu:            Structure used for freeing in an RCU-safe manner
  */
 struct fc_rport_priv {
         struct fc_lport             *local_port;
@@ -207,6 +192,7 @@ struct fc_rport_priv {
         u16                         disc_id;
         u16                         maxframe_size;
         unsigned int                retries;
+        unsigned int                major_retries;
         unsigned int                e_d_tov;
         unsigned int                r_a_tov;
         struct mutex                rp_mutex;
@@ -216,6 +202,7 @@ struct fc_rport_priv {
         struct list_head            peers;
         struct work_struct          event_work;
         u32                         supported_classes;
+        struct rcu_head             rcu;
 };
 
 /**
@@ -262,14 +249,12 @@ struct fcoe_dev_stats {
 
 /**
  * struct fc_seq_els_data - ELS data used for passing ELS specific responses
- * @fp:     The ELS frame
  * @reason: The reason for rejection
  * @explan: The explaination of the rejection
  *
  * Mainly used by the exchange manager layer.
  */
 struct fc_seq_els_data {
-        struct fc_frame *fp;
         enum fc_els_rjt_reason reason;
         enum fc_els_rjt_explan explan;
 };
@@ -405,6 +390,7 @@ struct fc_seq {
  * @esb_stat:     ESB exchange status
  * @r_a_tov:      Resouce allocation time out value (in msecs)
  * @seq_id:       The next sequence ID to use
+ * @encaps:       encapsulation information for lower-level driver
  * @f_ctl:        F_CTL flags for the sequence
  * @fh_type:      The frame type
  * @class:        The class of service
@@ -436,6 +422,7 @@ struct fc_exch {
         u32                 esb_stat;
         u32                 r_a_tov;
         u8                  seq_id;
+        u8                  encaps;
         u32                 f_ctl;
         u8                  fh_type;
         enum fc_class       class;
@@ -530,12 +517,11 @@ struct libfc_function_template {
                         struct fc_frame *);
 
         /*
-         * Send an ELS response using infomation from a previous
-         * exchange and sequence.
+         * Send an ELS response using infomation from the received frame.
          *
          * STATUS: OPTIONAL
          */
-        void (*seq_els_rsp_send)(struct fc_seq *, enum fc_els_cmd,
+        void (*seq_els_rsp_send)(struct fc_frame *, enum fc_els_cmd,
                                  struct fc_seq_els_data *);
 
         /*
@@ -567,6 +553,13 @@ struct libfc_function_template {
         struct fc_seq *(*seq_start_next)(struct fc_seq *);
 
         /*
+         * Assign a sequence for an incoming request frame.
+         *
+         * STATUS: OPTIONAL
+         */
+        struct fc_seq *(*seq_assign)(struct fc_lport *, struct fc_frame *);
+
+        /*
          * Reset an exchange manager, completing all sequences and exchanges.
          * If s_id is non-zero, reset only exchanges originating from that FID.
          * If d_id is non-zero, reset only exchanges sending to that FID.
@@ -587,8 +580,7 @@ struct libfc_function_template {
          *
          * STATUS: OPTIONAL
          */
-        void (*lport_recv)(struct fc_lport *, struct fc_seq *,
-                           struct fc_frame *);
+        void (*lport_recv)(struct fc_lport *, struct fc_frame *);
 
         /*
          * Reset the local port.
@@ -650,8 +642,7 @@ struct libfc_function_template {
          *
          * STATUS: OPTIONAL
          */
-        void (*rport_recv_req)(struct fc_seq *, struct fc_frame *,
-                               struct fc_lport *);
+        void (*rport_recv_req)(struct fc_lport *, struct fc_frame *);
 
         /*
          * lookup an rport by it's port ID.
@@ -697,8 +688,7 @@ struct libfc_function_template {
          *
          * STATUS: OPTIONAL
          */
-        void (*disc_recv_req)(struct fc_seq *, struct fc_frame *,
-                              struct fc_lport *);
+        void (*disc_recv_req)(struct fc_lport *, struct fc_frame *);
 
         /*
          * Start discovery for a local port.
@@ -736,7 +726,7 @@ struct libfc_function_template {
  * @buf_len:       Length of the discovery buffer
  * @disc_id:       Discovery ID
  * @rports:        List of discovered remote ports
- * @lport:         The local port that discovery is for
+ * @priv:          Private pointer for use by discovery code
  * @disc_mutex:    Mutex that protects the discovery context
  * @partial_buf:   Partial name buffer (if names are returned
  *                 in multiple frames)
@@ -752,7 +742,7 @@ struct fc_disc {
         u16                   disc_id;
 
         struct list_head      rports;
-        struct fc_lport       *lport;
+        void                  *priv;
         struct mutex          disc_mutex;
         struct fc_gpn_ft_resp partial_buf;
         struct delayed_work   disc_work;
@@ -796,6 +786,7 @@ struct fc_disc {
  * @mfs:                   The maximum Fibre Channel payload size
  * @max_retry_count:       The maximum retry attempts
  * @max_rport_retry_count: The maximum remote port retry attempts
+ * @rport_priv_size:       Size needed by driver after struct fc_rport_priv
  * @lro_xid:               The maximum XID for LRO
  * @lso_max:               The maximum large offload send size
  * @fcts:                  FC-4 type mask
@@ -842,9 +833,11 @@ struct fc_lport {
         u32                            lro_enabled:1;
         u32                            does_npiv:1;
         u32                            npiv_enabled:1;
+        u32                            point_to_multipoint:1;
         u32                            mfs;
         u8                             max_retry_count;
         u8                             max_rport_retry_count;
+        u16                            rport_priv_size;
         u16                            link_speed;
         u16                            link_supported_speeds;
         u16                            lro_xid;
@@ -986,6 +979,7 @@ int fc_set_mfs(struct fc_lport *, u32 mfs);
 struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize);
 struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id);
 int fc_lport_bsg_request(struct fc_bsg_job *);
+void fc_lport_set_local_id(struct fc_lport *, u32 port_id);
 
 /*
  * REMOTE PORT LAYER
@@ -998,6 +992,11 @@ void fc_rport_terminate_io(struct fc_rport *);
  *****************************/
 int fc_disc_init(struct fc_lport *);
 
+static inline struct fc_lport *fc_disc_lport(struct fc_disc *disc)
+{
+        return container_of(disc, struct fc_lport, disc);
+}
+
 /*
  * FCP LAYER
  *****************************/
@@ -1029,6 +1028,10 @@ struct fc_seq *fc_elsct_send(struct fc_lport *, u32 did,
                                     void *arg, u32 timer_msec);
 void fc_lport_flogi_resp(struct fc_seq *, struct fc_frame *, void *);
 void fc_lport_logo_resp(struct fc_seq *, struct fc_frame *, void *);
+void fc_fill_reply_hdr(struct fc_frame *, const struct fc_frame *,
+                       enum fc_rctl, u32 parm_offset);
+void fc_fill_hdr(struct fc_frame *, const struct fc_frame *,
+                 enum fc_rctl, u32 f_ctl, u16 seq_cnt, u32 parm_offset);
 
 
 /*
diff --git a/include/scsi/libfcoe.h b/include/scsi/libfcoe.h
index ec13f51531f8..06f1b5a8ed19 100644
--- a/include/scsi/libfcoe.h
+++ b/include/scsi/libfcoe.h
@@ -26,6 +26,7 @@
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
 #include <linux/workqueue.h>
+#include <linux/random.h>
 #include <scsi/fc/fc_fcoe.h>
 #include <scsi/libfc.h>
 
@@ -37,6 +38,7 @@
 #define FCOE_CTLR_START_DELAY   2000    /* mS after first adv. to choose FCF */
 #define FCOE_CTRL_SOL_TOV       2000    /* min. solicitation interval (mS) */
 #define FCOE_CTLR_FCF_LIMIT     20      /* max. number of FCF entries */
+#define FCOE_CTLR_VN2VN_LOGIN_LIMIT 3   /* max. VN2VN rport login retries */
 
 /**
  * enum fip_state - internal state of FCoE controller.
@@ -45,6 +47,11 @@
  * @FIP_ST_AUTO:        determining whether to use FIP or non-FIP mode.
  * @FIP_ST_NON_FIP:     non-FIP mode selected.
  * @FIP_ST_ENABLED:     FIP mode selected.
+ * @FIP_ST_VNMP_START:  VN2VN multipath mode start, wait
+ * @FIP_ST_VNMP_PROBE1: VN2VN sent first probe, listening
+ * @FIP_ST_VNMP_PROBE2: VN2VN sent second probe, listening
+ * @FIP_ST_VNMP_CLAIM:  VN2VN sent claim, waiting for responses
+ * @FIP_ST_VNMP_UP:     VN2VN multipath mode operation
  */
 enum fip_state {
         FIP_ST_DISABLED,
@@ -52,8 +59,23 @@ enum fip_state {
         FIP_ST_AUTO,
         FIP_ST_NON_FIP,
         FIP_ST_ENABLED,
+        FIP_ST_VNMP_START,
+        FIP_ST_VNMP_PROBE1,
+        FIP_ST_VNMP_PROBE2,
+        FIP_ST_VNMP_CLAIM,
+        FIP_ST_VNMP_UP,
 };
 
+/*
+ * Modes:
+ * The mode is the state that is to be entered after link up.
+ * It must not change after fcoe_ctlr_init() sets it.
+ */
+#define FIP_MODE_AUTO           FIP_ST_AUTO
+#define FIP_MODE_NON_FIP        FIP_ST_NON_FIP
+#define FIP_MODE_FABRIC         FIP_ST_ENABLED
+#define FIP_MODE_VN2VN          FIP_ST_VNMP_START
+
 /**
  * struct fcoe_ctlr - FCoE Controller and FIP state
  * @state:         internal FIP state for network link and FIP or non-FIP mode.
@@ -70,19 +92,20 @@ enum fip_state {
  * @timer_work:    &work_struct for doing keep-alives and resets.
  * @recv_work:     &work_struct for receiving FIP frames.
  * @fip_recv_list: list of received FIP frames.
+ * @rnd_state:     state for pseudo-random number generator.
+ * @port_id:       proposed or selected local-port ID.
  * @user_mfs:      configured maximum FC frame size, including FC header.
  * @flogi_oxid:    exchange ID of most recent fabric login.
  * @flogi_count:   number of FLOGI attempts in AUTO mode.
  * @map_dest:      use the FC_MAP mode for destination MAC addresses.
  * @spma:          supports SPMA server-provided MACs mode
- * @send_ctlr_ka:  need to send controller keep alive
- * @send_port_ka:  need to send port keep alives
+ * @probe_tries:   number of FC_IDs probed
  * @dest_addr:     MAC address of the selected FC forwarder.
  * @ctl_src_addr:  the native MAC address of our local port.
  * @send:          LLD-supplied function to handle sending FIP Ethernet frames
  * @update_mac:    LLD-supplied function to handle changes to MAC addresses.
  * @get_src_addr:  LLD-supplied function to supply a source MAC address.
- * @lock:          lock protecting this structure.
+ * @ctlr_mutex:    lock protecting this structure.
  *
  * This structure is used by all FCoE drivers.  It contains information
  * needed by all FCoE low-level drivers (LLDs) as well as internal state
@@ -103,21 +126,23 @@ struct fcoe_ctlr {
         struct work_struct timer_work;
         struct work_struct recv_work;
         struct sk_buff_head fip_recv_list;
+
+        struct rnd_state rnd_state;
+        u32 port_id;
+
         u16 user_mfs;
         u16 flogi_oxid;
         u8 flogi_count;
-        u8 reset_req;
         u8 map_dest;
         u8 spma;
-        u8 send_ctlr_ka;
-        u8 send_port_ka;
+        u8 probe_tries;
         u8 dest_addr[ETH_ALEN];
         u8 ctl_src_addr[ETH_ALEN];
 
         void (*send)(struct fcoe_ctlr *, struct sk_buff *);
         void (*update_mac)(struct fc_lport *, u8 *addr);
         u8 * (*get_src_addr)(struct fc_lport *);
-        spinlock_t lock;
+        struct mutex ctlr_mutex;
 };
 
 /**
@@ -156,8 +181,26 @@ struct fcoe_fcf {
         u8 fd_flags:1;
 };
 
+/**
+ * struct fcoe_rport - VN2VN remote port
+ * @time:       time of create or last beacon packet received from node
+ * @fcoe_len:   max FCoE frame size, not including VLAN or Ethernet headers
+ * @flags:      flags from probe or claim
+ * @login_count: number of unsuccessful rport logins to this port
+ * @enode_mac:  E_Node control MAC address
+ * @vn_mac:     VN_Node assigned MAC address for data
+ */
+struct fcoe_rport {
+        unsigned long time;
+        u16 fcoe_len;
+        u16 flags;
+        u8 login_count;
+        u8 enode_mac[ETH_ALEN];
+        u8 vn_mac[ETH_ALEN];
+};
+
 /* FIP API functions */
-void fcoe_ctlr_init(struct fcoe_ctlr *);
+void fcoe_ctlr_init(struct fcoe_ctlr *, enum fip_state);
 void fcoe_ctlr_destroy(struct fcoe_ctlr *);
 void fcoe_ctlr_link_up(struct fcoe_ctlr *);
 int fcoe_ctlr_link_down(struct fcoe_ctlr *);
@@ -168,6 +211,17 @@ int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *, struct fc_lport *,
 
 /* libfcoe funcs */
 u64 fcoe_wwn_from_mac(unsigned char mac[], unsigned int, unsigned int);
-int fcoe_libfc_config(struct fc_lport *, struct libfc_function_template *);
+int fcoe_libfc_config(struct fc_lport *, struct fcoe_ctlr *,
+                      const struct libfc_function_template *, int init_fcp);
+
+/**
+ * is_fip_mode() - returns true if FIP mode selected.
+ * @fip:        FCoE controller.
+ */
+static inline bool is_fip_mode(struct fcoe_ctlr *fip)
+{
+        return fip->state == FIP_ST_ENABLED;
+}
+
 
 #endif /* _LIBFCOE_H */
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 3b586859669c..d06e13be717b 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -422,16 +422,7 @@ enum service_response {
 };
 
 enum exec_status {
-        SAM_GOOD         = 0,
-        SAM_CHECK_COND   = 2,
-        SAM_COND_MET     = 4,
-        SAM_BUSY         = 8,
-        SAM_INTERMEDIATE = 0x10,
-        SAM_IM_COND_MET  = 0x12,
-        SAM_RESV_CONFLICT= 0x14,
-        SAM_TASK_SET_FULL= 0x28,
-        SAM_ACA_ACTIVE   = 0x30,
-        SAM_TASK_ABORTED = 0x40,
+        /* The SAM_STAT_.. codes fit in the lower 6 bits */
 
         SAS_DEV_NO_RESPONSE = 0x80,
         SAS_DATA_UNDERRUN,
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index d80b6dbed1ca..50cb34ffef11 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -381,6 +381,14 @@ extern int scsi_execute_req(struct scsi_device *sdev, const unsigned char *cmd,
                             struct scsi_sense_hdr *, int timeout, int retries,
                             int *resid);
 
+#ifdef CONFIG_PM_RUNTIME
+extern int scsi_autopm_get_device(struct scsi_device *);
+extern void scsi_autopm_put_device(struct scsi_device *);
+#else
+static inline int scsi_autopm_get_device(struct scsi_device *d) { return 0; }
+static inline void scsi_autopm_put_device(struct scsi_device *d) {}
+#endif /* CONFIG_PM_RUNTIME */
+
 static inline int __must_check scsi_device_reprobe(struct scsi_device *sdev)
 {
         return device_reprobe(&sdev->sdev_gendev);
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index 349c7f30720d..7fff94b3b2a8 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -32,6 +32,7 @@ struct scsi_transport_template;
 struct iscsi_transport;
 struct iscsi_endpoint;
 struct Scsi_Host;
+struct scsi_cmnd;
 struct iscsi_cls_conn;
 struct iscsi_conn;
 struct iscsi_task;
@@ -255,5 +256,6 @@ extern int iscsi_scan_finished(struct Scsi_Host *shost, unsigned long time);
 extern struct iscsi_endpoint *iscsi_create_endpoint(int dd_size);
 extern void iscsi_destroy_endpoint(struct iscsi_endpoint *ep);
 extern struct iscsi_endpoint *iscsi_lookup_endpoint(u64 handle);
+extern int iscsi_block_scsi_eh(struct scsi_cmnd *cmd);
 
 #endif