diff --git a/include/scsi/fc_encode.h b/include/scsi/fc_encode.h
new file mode 100644
index 0000000..6300f55
--- /dev/null
+++ b/include/scsi/fc_encode.h
@@ -0,0 +1,309 @@
+/*
+ * Copyright(c) 2008 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#ifndef _FC_ENCODE_H_
+#define _FC_ENCODE_H_
+#include <asm/unaligned.h>
+
+struct fc_ns_rft {
+	struct fc_ns_fid fid;	/* port ID object */
+	struct fc_ns_fts fts;	/* FC4-types object */
+};
+
+struct fc_ct_req {
+	struct fc_ct_hdr hdr;
+	union {
+		struct fc_ns_gid_ft gid;
+		struct fc_ns_rn_id  rn;
+		struct fc_ns_rft rft;
+	} payload;
+};
+
+/**
+ * fill FC header fields in specified fc_frame
+ */
+static inline void fc_fill_fc_hdr(struct fc_frame *fp, enum fc_rctl r_ctl,
+				  u32 did, u32 sid, enum fc_fh_type type,
+				  u32 f_ctl, u32 parm_offset)
+{
+	struct fc_frame_header *fh;
+
+	fh = fc_frame_header_get(fp);
+	WARN_ON(r_ctl == 0);
+	fh->fh_r_ctl = r_ctl;
+	hton24(fh->fh_d_id, did);
+	hton24(fh->fh_s_id, sid);
+	fh->fh_type = type;
+	hton24(fh->fh_f_ctl, f_ctl);
+	fh->fh_cs_ctl = 0;
+	fh->fh_df_ctl = 0;
+	fh->fh_parm_offset = htonl(parm_offset);
+}
+
+/**
+ * fc_ct_hdr_fill- fills ct header and reset ct payload
+ * returns pointer to ct request.
+ */
+static inline struct fc_ct_req *fc_ct_hdr_fill(const struct fc_frame *fp,
+					       unsigned int op, size_t req_size)
+{
+	struct fc_ct_req *ct;
+	size_t ct_plen;
+
+	ct_plen  = sizeof(struct fc_ct_hdr) + req_size;
+	ct = fc_frame_payload_get(fp, ct_plen);
+	memset(ct, 0, ct_plen);
+	ct->hdr.ct_rev = FC_CT_REV;
+	ct->hdr.ct_fs_type = FC_FST_DIR;
+	ct->hdr.ct_fs_subtype = FC_NS_SUBTYPE;
+	ct->hdr.ct_cmd = htons((u16) op);
+	return ct;
+}
+
+/**
+ * fc_ct_fill - Fill in a name service request frame
+ */
+static inline int fc_ct_fill(struct fc_lport *lport, struct fc_frame *fp,
+		      unsigned int op, enum fc_rctl *r_ctl, u32 *did,
+		      enum fc_fh_type *fh_type)
+{
+	struct fc_ct_req *ct;
+
+	switch (op) {
+	case FC_NS_GPN_FT:
+		ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_gid_ft));
+		ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
+		break;
+
+	case FC_NS_RFT_ID:
+		ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rft));
+		hton24(ct->payload.rft.fid.fp_fid,
+		       fc_host_port_id(lport->host));
+		ct->payload.rft.fts = lport->fcts;
+		break;
+
+	case FC_NS_RPN_ID:
+		ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id));
+		hton24(ct->payload.rn.fr_fid.fp_fid,
+		       fc_host_port_id(lport->host));
+		ct->payload.rft.fts = lport->fcts;
+		put_unaligned_be64(lport->wwpn, &ct->payload.rn.fr_wwn);
+		break;
+
+	default:
+		FC_DBG("Invalid op code %x \n", op);
+		return -EINVAL;
+	}
+	*r_ctl = FC_RCTL_DD_UNSOL_CTL;
+	*did = FC_FID_DIR_SERV;
+	*fh_type = FC_TYPE_CT;
+	return 0;
+}
+
+/**
+ * fc_plogi_fill - Fill in plogi request frame
+ */
+static inline void fc_plogi_fill(struct fc_lport *lport, struct fc_frame *fp,
+				 unsigned int op)
+{
+	struct fc_els_flogi *plogi;
+	struct fc_els_csp *csp;
+	struct fc_els_cssp *cp;
+
+	plogi = fc_frame_payload_get(fp, sizeof(*plogi));
+	memset(plogi, 0, sizeof(*plogi));
+	plogi->fl_cmd = (u8) op;
+	put_unaligned_be64(lport->wwpn, &plogi->fl_wwpn);
+	put_unaligned_be64(lport->wwnn, &plogi->fl_wwnn);
+
+	csp = &plogi->fl_csp;
+	csp->sp_hi_ver = 0x20;
+	csp->sp_lo_ver = 0x20;
+	csp->sp_bb_cred = htons(10);	/* this gets set by gateway */
+	csp->sp_bb_data = htons((u16) lport->mfs);
+	cp = &plogi->fl_cssp[3 - 1];	/* class 3 parameters */
+	cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
+	csp->sp_features = htons(FC_SP_FT_CIRO);
+	csp->sp_tot_seq = htons(255);	/* seq. we accept */
+	csp->sp_rel_off = htons(0x1f);
+	csp->sp_e_d_tov = htonl(lport->e_d_tov);
+
+	cp->cp_rdfs = htons((u16) lport->mfs);
+	cp->cp_con_seq = htons(255);
+	cp->cp_open_seq = 1;
+}
+
+/**
+ * fc_flogi_fill - Fill in a flogi request frame.
+ */
+static inline void fc_flogi_fill(struct fc_lport *lport, struct fc_frame *fp)
+{
+	struct fc_els_csp *sp;
+	struct fc_els_cssp *cp;
+	struct fc_els_flogi *flogi;
+
+	flogi = fc_frame_payload_get(fp, sizeof(*flogi));
+	memset(flogi, 0, sizeof(*flogi));
+	flogi->fl_cmd = (u8) ELS_FLOGI;
+	put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn);
+	put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn);
+	sp = &flogi->fl_csp;
+	sp->sp_hi_ver = 0x20;
+	sp->sp_lo_ver = 0x20;
+	sp->sp_bb_cred = htons(10);	/* this gets set by gateway */
+	sp->sp_bb_data = htons((u16) lport->mfs);
+	cp = &flogi->fl_cssp[3 - 1];	/* class 3 parameters */
+	cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
+}
+
+/**
+ * fc_logo_fill - Fill in a logo request frame.
+ */
+static inline void fc_logo_fill(struct fc_lport *lport, struct fc_frame *fp)
+{
+	struct fc_els_logo *logo;
+
+	logo = fc_frame_payload_get(fp, sizeof(*logo));
+	memset(logo, 0, sizeof(*logo));
+	logo->fl_cmd = ELS_LOGO;
+	hton24(logo->fl_n_port_id, fc_host_port_id(lport->host));
+	logo->fl_n_port_wwn = htonll(lport->wwpn);
+}
+
+/**
+ * fc_rtv_fill - Fill in RTV (read timeout value) request frame.
+ */
+static inline void fc_rtv_fill(struct fc_lport *lport, struct fc_frame *fp)
+{
+	struct fc_els_rtv *rtv;
+
+	rtv = fc_frame_payload_get(fp, sizeof(*rtv));
+	memset(rtv, 0, sizeof(*rtv));
+	rtv->rtv_cmd = ELS_RTV;
+}
+
+/**
+ * fc_rec_fill - Fill in rec request frame
+ */
+static inline void fc_rec_fill(struct fc_lport *lport, struct fc_frame *fp)
+{
+	struct fc_els_rec *rec;
+	struct fc_exch *ep = fc_seq_exch(fr_seq(fp));
+
+	rec = fc_frame_payload_get(fp, sizeof(*rec));
+	memset(rec, 0, sizeof(*rec));
+	rec->rec_cmd = ELS_REC;
+	hton24(rec->rec_s_id, fc_host_port_id(lport->host));
+	rec->rec_ox_id = htons(ep->oxid);
+	rec->rec_rx_id = htons(ep->rxid);
+}
+
+/**
+ * fc_prli_fill - Fill in prli request frame
+ */
+static inline void fc_prli_fill(struct fc_lport *lport, struct fc_frame *fp)
+{
+	struct {
+		struct fc_els_prli prli;
+		struct fc_els_spp spp;
+	} *pp;
+
+	pp = fc_frame_payload_get(fp, sizeof(*pp));
+	memset(pp, 0, sizeof(*pp));
+	pp->prli.prli_cmd = ELS_PRLI;
+	pp->prli.prli_spp_len = sizeof(struct fc_els_spp);
+	pp->prli.prli_len = htons(sizeof(*pp));
+	pp->spp.spp_type = FC_TYPE_FCP;
+	pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR;
+	pp->spp.spp_params = htonl(lport->service_params);
+}
+
+/**
+ * fc_scr_fill - Fill in a scr request frame.
+ */
+static inline void fc_scr_fill(struct fc_lport *lport, struct fc_frame *fp)
+{
+	struct fc_els_scr *scr;
+
+	scr = fc_frame_payload_get(fp, sizeof(*scr));
+	memset(scr, 0, sizeof(*scr));
+	scr->scr_cmd = ELS_SCR;
+	scr->scr_reg_func = ELS_SCRF_FULL;
+}
+
+/**
+ * fc_els_fill - Fill in an ELS  request frame
+ */
+static inline int fc_els_fill(struct fc_lport *lport, struct fc_rport *rport,
+		       struct fc_frame *fp, unsigned int op,
+		       enum fc_rctl *r_ctl, u32 *did, enum fc_fh_type *fh_type)
+{
+	switch (op) {
+	case ELS_PLOGI:
+		fc_plogi_fill(lport, fp, ELS_PLOGI);
+		*did = rport->port_id;
+		break;
+
+	case ELS_FLOGI:
+		fc_flogi_fill(lport, fp);
+		*did = FC_FID_FLOGI;
+		break;
+
+	case ELS_LOGO:
+		fc_logo_fill(lport, fp);
+		*did = FC_FID_FLOGI;
+		/*
+		 * if rport is valid then it
+		 * is port logo, therefore
+		 * set did to rport id.
+		 */
+		if (rport)
+			*did = rport->port_id;
+		break;
+
+	case ELS_RTV:
+		fc_rtv_fill(lport, fp);
+		*did = rport->port_id;
+		break;
+
+	case ELS_REC:
+		fc_rec_fill(lport, fp);
+		*did = rport->port_id;
+		break;
+
+	case ELS_PRLI:
+		fc_prli_fill(lport, fp);
+		*did = rport->port_id;
+		break;
+
+	case ELS_SCR:
+		fc_scr_fill(lport, fp);
+		*did = FC_FID_FCTRL;
+		break;
+
+	default:
+		FC_DBG("Invalid op code %x \n", op);
+		return -EINVAL;
+	}
+
+	*r_ctl = FC_RCTL_ELS_REQ;
+	*fh_type = FC_TYPE_ELS;
+	return 0;
+}
+#endif /* _FC_ENCODE_H_ */
diff --git a/include/scsi/fc_frame.h b/include/scsi/fc_frame.h
new file mode 100644
index 0000000..04d34a7
--- /dev/null
+++ b/include/scsi/fc_frame.h
@@ -0,0 +1,242 @@
+/*
+ * Copyright(c) 2007 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#ifndef _FC_FRAME_H_
+#define _FC_FRAME_H_
+
+#include <linux/scatterlist.h>
+#include <linux/skbuff.h>
+#include <scsi/scsi_cmnd.h>
+
+#include <scsi/fc/fc_fs.h>
+#include <scsi/fc/fc_fcp.h>
+#include <scsi/fc/fc_encaps.h>
+
+/*
+ * The fc_frame interface is used to pass frame data between functions.
+ * The frame includes the data buffer, length, and SOF / EOF delimiter types.
+ * A pointer to the port structure of the receiving port is also includeded.
+ */
+
+#define	FC_FRAME_HEADROOM	32	/* headroom for VLAN + FCoE headers */
+#define	FC_FRAME_TAILROOM	8	/* trailer space for FCoE */
+
+/*
+ * Information about an individual fibre channel frame received or to be sent.
+ * The buffer may be in up to 4 additional non-contiguous sections,
+ * but the linear section must hold the frame header.
+ */
+#define FC_FRAME_SG_LEN		4	/* scatter/gather list maximum length */
+
+#define fp_skb(fp)	(&((fp)->skb))
+#define fr_hdr(fp)	((fp)->skb.data)
+#define fr_len(fp)	((fp)->skb.len)
+#define fr_cb(fp)	((struct fcoe_rcv_info *)&((fp)->skb.cb[0]))
+#define fr_dev(fp)	(fr_cb(fp)->fr_dev)
+#define fr_seq(fp)	(fr_cb(fp)->fr_seq)
+#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_max_payload(fp)	(fr_cb(fp)->fr_max_payload)
+#define fr_cmd(fp)	(fr_cb(fp)->fr_cmd)
+#define fr_dir(fp)	(fr_cmd(fp)->sc_data_direction)
+#define fr_crc(fp)	(fr_cb(fp)->fr_crc)
+
+struct fc_frame {
+	struct sk_buff skb;
+};
+
+struct fcoe_rcv_info {
+	struct packet_type  *ptype;
+	struct fc_lport	*fr_dev;	/* transport layer private pointer */
+	struct fc_seq	*fr_seq;	/* for use with exchange manager */
+	struct scsi_cmnd *fr_cmd;	/* for use of scsi command */
+	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_flags;	/* flags - see below */
+};
+
+
+/*
+ * Get fc_frame pointer for an skb that's already been imported.
+ */
+static inline struct fcoe_rcv_info *fcoe_dev_from_skb(const struct sk_buff *skb)
+{
+	BUILD_BUG_ON(sizeof(struct fcoe_rcv_info) > sizeof(skb->cb));
+	return (struct fcoe_rcv_info *) skb->cb;
+}
+
+/*
+ * fr_flags.
+ */
+#define	FCPHF_CRC_UNCHECKED	0x01	/* CRC not computed, still appended */
+
+/*
+ * Initialize a frame.
+ * We don't do a complete memset here for performance reasons.
+ * The caller must set fr_free, fr_hdr, fr_len, fr_sof, and fr_eof eventually.
+ */
+static inline void fc_frame_init(struct fc_frame *fp)
+{
+	fr_dev(fp) = NULL;
+	fr_seq(fp) = NULL;
+	fr_flags(fp) = 0;
+}
+
+struct fc_frame *fc_frame_alloc_fill(struct fc_lport *, size_t payload_len);
+
+struct fc_frame *__fc_frame_alloc(size_t payload_len);
+
+/*
+ * Get frame for sending via port.
+ */
+static inline struct fc_frame *_fc_frame_alloc(struct fc_lport *dev,
+					       size_t payload_len)
+{
+	return __fc_frame_alloc(payload_len);
+}
+
+/*
+ * Allocate fc_frame structure and buffer.  Set the initial length to
+ * payload_size + sizeof (struct fc_frame_header).
+ */
+static inline struct fc_frame *fc_frame_alloc(struct fc_lport *dev, size_t len)
+{
+	struct fc_frame *fp;
+
+	/*
+	 * Note: Since len will often be a constant multiple of 4,
+	 * this check will usually be evaluated and eliminated at compile time.
+	 */
+	if ((len % 4) != 0)
+		fp = fc_frame_alloc_fill(dev, len);
+	else
+		fp = _fc_frame_alloc(dev, len);
+	return fp;
+}
+
+/*
+ * Free the fc_frame structure and buffer.
+ */
+static inline void fc_frame_free(struct fc_frame *fp)
+{
+	kfree_skb(fp_skb(fp));
+}
+
+static inline int fc_frame_is_linear(struct fc_frame *fp)
+{
+	return !skb_is_nonlinear(fp_skb(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);
+}
+
+/*
+ * Get frame payload from message in fc_frame structure.
+ * This hides a cast and provides a place to add some checking.
+ * The len parameter is the minimum length for the payload portion.
+ * Returns NULL if the frame is too short.
+ *
+ * This assumes the interesting part of the payload is in the first part
+ * of the buffer for received data.  This may not be appropriate to use for
+ * buffers being transmitted.
+ */
+static inline void *fc_frame_payload_get(const struct fc_frame *fp,
+					 size_t len)
+{
+	void *pp = NULL;
+
+	if (fr_len(fp) >= sizeof(struct fc_frame_header) + len)
+		pp = fc_frame_header_get(fp) + 1;
+	return pp;
+}
+
+/*
+ * Get frame payload opcode (first byte) from message in fc_frame structure.
+ * This hides a cast and provides a place to add some checking. Return 0
+ * if the frame has no payload.
+ */
+static inline u8 fc_frame_payload_op(const struct fc_frame *fp)
+{
+	u8 *cp;
+
+	cp = fc_frame_payload_get(fp, sizeof(u8));
+	if (!cp)
+		return 0;
+	return *cp;
+
+}
+
+/*
+ * Get FC class from frame.
+ */
+static inline enum fc_class fc_frame_class(const struct fc_frame *fp)
+{
+	return fc_sof_class(fr_sof(fp));
+}
+
+/*
+ * Check the CRC in a frame.
+ * The CRC immediately follows the last data item *AFTER* the length.
+ * The return value is zero if the CRC matches.
+ */
+u32 fc_frame_crc_check(struct fc_frame *);
+
+static inline u8 fc_frame_rctl(const struct fc_frame *fp)
+{
+	return fc_frame_header_get(fp)->fh_r_ctl;
+}
+
+static inline bool fc_frame_is_cmd(const struct fc_frame *fp)
+{
+	return fc_frame_rctl(fp) == FC_RCTL_DD_UNSOL_CMD;
+}
+
+static inline bool fc_frame_is_read(const struct fc_frame *fp)
+{
+	if (fc_frame_is_cmd(fp) && fr_cmd(fp))
+		return fr_dir(fp) == DMA_FROM_DEVICE;
+	return false;
+}
+
+static inline bool fc_frame_is_write(const struct fc_frame *fp)
+{
+	if (fc_frame_is_cmd(fp) && fr_cmd(fp))
+		return fr_dir(fp) == DMA_TO_DEVICE;
+	return false;
+}
+
+/*
+ * Check for leaks.
+ * Print the frame header of any currently allocated frame, assuming there
+ * should be none at this point.
+ */
+void fc_frame_leak_check(void);
+
+#endif /* _FC_FRAME_H_ */
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
new file mode 100644
index 0000000..9f28763
--- /dev/null
+++ b/include/scsi/libfc.h
@@ -0,0 +1,938 @@
+/*
+ * Copyright(c) 2007 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Maintained at www.Open-FCoE.org
+ */
+
+#ifndef _LIBFC_H_
+#define _LIBFC_H_
+
+#include <linux/timer.h>
+#include <linux/if.h>
+
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_fc.h>
+
+#include <scsi/fc/fc_fcp.h>
+#include <scsi/fc/fc_ns.h>
+#include <scsi/fc/fc_els.h>
+#include <scsi/fc/fc_gs.h>
+
+#include <scsi/fc_frame.h>
+
+#define LIBFC_DEBUG
+
+#ifdef LIBFC_DEBUG
+/* Log messages */
+#define FC_DBG(fmt, args...)						\
+	do {								\
+		printk(KERN_INFO "%s " fmt, __func__, ##args);		\
+	} while (0)
+#else
+#define FC_DBG(fmt, args...)
+#endif
+
+/*
+ * libfc error codes
+ */
+#define	FC_NO_ERR	0	/* no error */
+#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)
+
+#define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2]))
+
+#define hton24(p, v)	do {			\
+		p[0] = (((v) >> 16) & 0xFF);	\
+		p[1] = (((v) >> 8) & 0xFF);	\
+		p[2] = ((v) & 0xFF);		\
+	} while (0)
+
+/*
+ * FC HBA status
+ */
+#define FC_PAUSE		    (1 << 1)
+#define FC_LINK_UP		    (1 << 0)
+
+enum fc_lport_state {
+	LPORT_ST_NONE = 0,
+	LPORT_ST_FLOGI,
+	LPORT_ST_DNS,
+	LPORT_ST_RPN_ID,
+	LPORT_ST_RFT_ID,
+	LPORT_ST_SCR,
+	LPORT_ST_READY,
+	LPORT_ST_LOGO,
+	LPORT_ST_RESET
+};
+
+enum fc_disc_event {
+	DISC_EV_NONE = 0,
+	DISC_EV_SUCCESS,
+	DISC_EV_FAILED
+};
+
+enum fc_rport_state {
+	RPORT_ST_NONE = 0,
+	RPORT_ST_INIT,		/* initialized */
+	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,		/* port logout sent */
+};
+
+enum fc_rport_trans_state {
+	FC_PORTSTATE_ROGUE,
+	FC_PORTSTATE_REAL,
+};
+
+/**
+ * struct fc_disc_port - temporary discovery port to hold rport identifiers
+ * @lp: Fibre Channel host port instance
+ * @peers: node for list management during discovery and RSCN processing
+ * @ids: identifiers structure to pass to fc_remote_port_add()
+ * @rport_work: work struct for starting the rport state machine
+ */
+struct fc_disc_port {
+	struct fc_lport             *lp;
+	struct list_head            peers;
+	struct fc_rport_identifiers ids;
+	struct work_struct	    rport_work;
+};
+
+enum fc_rport_event {
+	RPORT_EV_NONE = 0,
+	RPORT_EV_CREATED,
+	RPORT_EV_FAILED,
+	RPORT_EV_STOP,
+	RPORT_EV_LOGO
+};
+
+struct fc_rport_operations {
+	void (*event_callback)(struct fc_lport *, struct fc_rport *,
+			       enum fc_rport_event);
+};
+
+/**
+ * struct fc_rport_libfc_priv - libfc internal information about a remote port
+ * @local_port: Fibre Channel host port instance
+ * @rp_state: state tracks progress of PLOGI, PRLI, and RTV exchanges
+ * @flags: REC and RETRY supported flags
+ * @max_seq: maximum number of concurrent sequences
+ * @retries: retry count in current state
+ * @e_d_tov: error detect timeout value (in msec)
+ * @r_a_tov: resource allocation timeout value (in msec)
+ * @rp_mutex: mutex protects rport
+ * @retry_work:
+ * @event_callback: Callback for rport READY, FAILED or LOGO
+ */
+struct fc_rport_libfc_priv {
+	struct fc_lport		   *local_port;
+	enum fc_rport_state        rp_state;
+	u16			   flags;
+	#define FC_RP_FLAGS_REC_SUPPORTED	(1 << 0)
+	#define FC_RP_FLAGS_RETRY		(1 << 1)
+	u16		           max_seq;
+	unsigned int	           retries;
+	unsigned int	           e_d_tov;
+	unsigned int	           r_a_tov;
+	enum fc_rport_trans_state  trans_state;
+	struct mutex               rp_mutex;
+	struct delayed_work	   retry_work;
+	enum fc_rport_event        event;
+	struct fc_rport_operations *ops;
+	struct list_head           peers;
+	struct work_struct         event_work;
+};
+
+#define PRIV_TO_RPORT(x)						\
+	(struct fc_rport *)((void *)x - sizeof(struct fc_rport));
+#define RPORT_TO_PRIV(x)						\
+	(struct fc_rport_libfc_priv *)((void *)x + sizeof(struct fc_rport));
+
+struct fc_rport *fc_rport_rogue_create(struct fc_disc_port *);
+
+static inline void fc_rport_set_name(struct fc_rport *rport, u64 wwpn, u64 wwnn)
+{
+	rport->node_name = wwnn;
+	rport->port_name = wwpn;
+}
+
+/*
+ * fcoe stats structure
+ */
+struct fcoe_dev_stats {
+	u64		SecondsSinceLastReset;
+	u64		TxFrames;
+	u64		TxWords;
+	u64		RxFrames;
+	u64		RxWords;
+	u64		ErrorFrames;
+	u64		DumpedFrames;
+	u64		LinkFailureCount;
+	u64		LossOfSignalCount;
+	u64		InvalidTxWordCount;
+	u64		InvalidCRCCount;
+	u64		InputRequests;
+	u64		OutputRequests;
+	u64		ControlRequests;
+	u64		InputMegabytes;
+	u64		OutputMegabytes;
+};
+
+/*
+ * els data is used for passing ELS respone specific
+ * data to send ELS response mainly using infomation
+ * in exchange and sequence in EM layer.
+ */
+struct fc_seq_els_data {
+	struct fc_frame *fp;
+	enum fc_els_rjt_reason reason;
+	enum fc_els_rjt_explan explan;
+};
+
+/*
+ * FCP request structure, one for each scsi cmd request
+ */
+struct fc_fcp_pkt {
+	/*
+	 * housekeeping stuff
+	 */
+	struct fc_lport *lp;	/* handle to hba struct */
+	u16		state;		/* scsi_pkt state state */
+	u16		tgt_flags;	/* target flags	 */
+	atomic_t	ref_cnt;	/* fcp pkt ref count */
+	spinlock_t	scsi_pkt_lock;	/* Must be taken before the host lock
+					 * if both are held at the same time */
+	/*
+	 * SCSI I/O related stuff
+	 */
+	struct scsi_cmnd *cmd;		/* scsi command pointer. set/clear
+					 * under host lock */
+	struct list_head list;		/* tracks queued commands. access under
+					 * host lock */
+	/*
+	 * timeout related stuff
+	 */
+	struct timer_list timer;	/* command timer */
+	struct completion tm_done;
+	int	wait_for_comp;
+	unsigned long	start_time;	/* start jiffie */
+	unsigned long	end_time;	/* end jiffie */
+	unsigned long	last_pkt_time;	 /* jiffies of last frame received */
+
+	/*
+	 * scsi cmd and data transfer information
+	 */
+	u32		data_len;
+	/*
+	 * transport related veriables
+	 */
+	struct fcp_cmnd cdb_cmd;
+	size_t		xfer_len;
+	u32		xfer_contig_end; /* offset of end of contiguous xfer */
+	u16		max_payload;	/* max payload size in bytes */
+
+	/*
+	 * scsi/fcp return status
+	 */
+	u32		io_status;	/* SCSI result upper 24 bits */
+	u8		cdb_status;
+	u8		status_code;	/* FCP I/O status */
+	/* bit 3 Underrun bit 2: overrun */
+	u8		scsi_comp_flags;
+	u32		req_flags;	/* bit 0: read bit:1 write */
+	u32		scsi_resid;	/* residule length */
+
+	struct fc_rport	*rport;		/* remote port pointer */
+	struct fc_seq	*seq_ptr;	/* current sequence pointer */
+	/*
+	 * Error Processing
+	 */
+	u8		recov_retry;	/* count of recovery retries */
+	struct fc_seq	*recov_seq;	/* sequence for REC or SRR */
+};
+
+/*
+ * Structure and function definitions for managing Fibre Channel Exchanges
+ * and Sequences
+ *
+ * fc_exch holds state for one exchange and links to its active sequence.
+ *
+ * fc_seq holds the state for an individual sequence.
+ */
+
+struct fc_exch_mgr;
+
+/*
+ * Sequence.
+ */
+struct fc_seq {
+	u8	id;		/* seq ID */
+	u16	ssb_stat;	/* status flags for sequence status block */
+	u16	cnt;		/* frames sent so far on sequence */
+	u32	rec_data;	/* FC-4 value for REC */
+};
+
+#define FC_EX_DONE		(1 << 0) /* ep is completed */
+#define FC_EX_RST_CLEANUP	(1 << 1) /* reset is forcing completion */
+
+/*
+ * Exchange.
+ *
+ * Locking notes: The ex_lock protects following items:
+ *	state, esb_stat, f_ctl, seq.ssb_stat
+ *	seq_id
+ *	sequence allocation
+ */
+struct fc_exch {
+	struct fc_exch_mgr *em;		/* exchange manager */
+	u32		state;		/* internal driver state */
+	u16		xid;		/* our exchange ID */
+	struct list_head	ex_list;	/* free or busy list linkage */
+	spinlock_t	ex_lock;	/* lock covering exchange state */
+	atomic_t	ex_refcnt;	/* reference counter */
+	struct delayed_work timeout_work; /* timer for upper level protocols */
+	struct fc_lport	*lp;		/* fc device instance */
+	u16		oxid;		/* originator's exchange ID */
+	u16		rxid;		/* responder's exchange ID */
+	u32		oid;		/* originator's FCID */
+	u32		sid;		/* source FCID */
+	u32		did;		/* destination FCID */
+	u32		esb_stat;	/* exchange status for ESB */
+	u32		r_a_tov;	/* r_a_tov from rport (msec) */
+	u8		seq_id;		/* next sequence ID to use */
+	u32		f_ctl;		/* F_CTL flags for sequences */
+	u8		fh_type;	/* frame type */
+	enum fc_class	class;		/* class of service */
+	struct fc_seq	seq;		/* single sequence */
+	/*
+	 * Handler for responses to this current exchange.
+	 */
+	void		(*resp)(struct fc_seq *, struct fc_frame *, void *);
+	void		(*destructor)(struct fc_seq *, void *);
+	/*
+	 * arg is passed as void pointer to exchange
+	 * resp and destructor handlers
+	 */
+	void		*arg;
+};
+#define	fc_seq_exch(sp) container_of(sp, struct fc_exch, seq)
+
+struct libfc_function_template {
+
+	/**
+	 * Mandatory Fields
+	 *
+	 * These handlers must be implemented by the LLD.
+	 */
+
+	/*
+	 * Interface to send a FC frame
+	 */
+	int (*frame_send)(struct fc_lport *lp, struct fc_frame *fp);
+
+	/**
+	 * Optional Fields
+	 *
+	 * The LLD may choose to implement any of the following handlers.
+	 * If LLD doesn't specify hander and leaves its pointer NULL then
+	 * the default libfc function will be used for that handler.
+	 */
+
+	/**
+	 * ELS/CT interfaces
+	 */
+
+	/*
+	 * elsct_send - sends ELS/CT frame
+	 */
+	struct fc_seq *(*elsct_send)(struct fc_lport *lport,
+				     struct fc_rport *rport,
+				     struct fc_frame *fp,
+				     unsigned int op,
+				     void (*resp)(struct fc_seq *,
+					     struct fc_frame *fp,
+					     void *arg),
+				     void *arg, u32 timer_msec);
+	/**
+	 * Exhance Manager interfaces
+	 */
+
+	/*
+	 * Send the FC frame payload using a new exchange and sequence.
+	 *
+	 * The frame pointer with some of the header's fields must be
+	 * filled before calling exch_seq_send(), those fields are,
+	 *
+	 * - routing control
+	 * - FC port did
+	 * - FC port sid
+	 * - FC header type
+	 * - frame control
+	 * - parameter or relative offset
+	 *
+	 * The exchange response handler is set in this routine to resp()
+	 * function pointer. It can be called in two scenarios: if a timeout
+	 * occurs or if a response frame is received for the exchange. The
+	 * fc_frame pointer in response handler will also indicate timeout
+	 * as error using IS_ERR related macros.
+	 *
+	 * The exchange destructor handler is also set in this routine.
+	 * The destructor handler is invoked by EM layer when exchange
+	 * is about to free, this can be used by caller to free its
+	 * resources along with exchange free.
+	 *
+	 * The arg is passed back to resp and destructor handler.
+	 *
+	 * The timeout value (in msec) for an exchange is set if non zero
+	 * timer_msec argument is specified. The timer is canceled when
+	 * it fires or when the exchange is done. The exchange timeout handler
+	 * is registered by EM layer.
+	 */
+	struct fc_seq *(*exch_seq_send)(struct fc_lport *lp,
+					struct fc_frame *fp,
+					void (*resp)(struct fc_seq *sp,
+						     struct fc_frame *fp,
+						     void *arg),
+					void (*destructor)(struct fc_seq *sp,
+							   void *arg),
+					void *arg, unsigned int timer_msec);
+
+	/*
+	 * send a frame using existing sequence and exchange.
+	 */
+	int (*seq_send)(struct fc_lport *lp, struct fc_seq *sp,
+			struct fc_frame *fp);
+
+	/*
+	 * Send ELS response using mainly infomation
+	 * in exchange and sequence in EM layer.
+	 */
+	void (*seq_els_rsp_send)(struct fc_seq *sp, enum fc_els_cmd els_cmd,
+				 struct fc_seq_els_data *els_data);
+
+	/*
+	 * Abort an exchange and sequence. Generally called because of a
+	 * exchange timeout or an abort from the upper layer.
+	 *
+	 * A timer_msec can be specified for abort timeout, if non-zero
+	 * timer_msec value is specified then exchange resp handler
+	 * will be called with timeout error if no response to abort.
+	 */
+	int (*seq_exch_abort)(const struct fc_seq *req_sp,
+			      unsigned int timer_msec);
+
+	/*
+	 * Indicate that an exchange/sequence tuple is complete and the memory
+	 * allocated for the related objects may be freed.
+	 */
+	void (*exch_done)(struct fc_seq *sp);
+
+	/*
+	 * Assigns a EM and a free XID for an new exchange and then
+	 * allocates a new exchange and sequence pair.
+	 * The fp can be used to determine free XID.
+	 */
+	struct fc_exch *(*exch_get)(struct fc_lport *lp, struct fc_frame *fp);
+
+	/*
+	 * Release previously assigned XID by exch_get API.
+	 * The LLD may implement this if XID is assigned by LLD
+	 * in exch_get().
+	 */
+	void (*exch_put)(struct fc_lport *lp, struct fc_exch_mgr *mp,
+			 u16 ex_id);
+
+	/*
+	 * Start a new sequence on the same exchange/sequence tuple.
+	 */
+	struct fc_seq *(*seq_start_next)(struct fc_seq *sp);
+
+	/*
+	 * 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.
+	 */
+	void (*exch_mgr_reset)(struct fc_exch_mgr *,
+			       u32 s_id, u32 d_id);
+
+	void (*rport_flush_queue)(void);
+	/**
+	 * Local Port interfaces
+	 */
+
+	/*
+	 * Receive a frame to a local port.
+	 */
+	void (*lport_recv)(struct fc_lport *lp, struct fc_seq *sp,
+			   struct fc_frame *fp);
+
+	int (*lport_reset)(struct fc_lport *);
+
+	/**
+	 * Remote Port interfaces
+	 */
+
+	/*
+	 * Initiates the RP state machine. It is called from the LP module.
+	 * This function will issue the following commands to the N_Port
+	 * identified by the FC ID provided.
+	 *
+	 * - PLOGI
+	 * - PRLI
+	 * - RTV
+	 */
+	int (*rport_login)(struct fc_rport *rport);
+
+	/*
+	 * Logoff, and remove the rport from the transport if
+	 * it had been added. This will send a LOGO to the target.
+	 */
+	int (*rport_logoff)(struct fc_rport *rport);
+
+	/*
+	 * Recieve a request from a remote port.
+	 */
+	void (*rport_recv_req)(struct fc_seq *, struct fc_frame *,
+			       struct fc_rport *);
+
+	struct fc_rport *(*rport_lookup)(const struct fc_lport *, u32);
+
+	/**
+	 * FCP interfaces
+	 */
+
+	/*
+	 * Send a fcp cmd from fsp pkt.
+	 * Called with the SCSI host lock unlocked and irqs disabled.
+	 *
+	 * The resp handler is called when FCP_RSP received.
+	 *
+	 */
+	int (*fcp_cmd_send)(struct fc_lport *lp, struct fc_fcp_pkt *fsp,
+			    void (*resp)(struct fc_seq *, struct fc_frame *fp,
+					 void *arg));
+
+	/*
+	 * Used at least durring linkdown and reset
+	 */
+	void (*fcp_cleanup)(struct fc_lport *lp);
+
+	/*
+	 * Abort all I/O on a local port
+	 */
+	void (*fcp_abort_io)(struct fc_lport *lp);
+
+	/**
+	 * Discovery interfaces
+	 */
+
+	void (*disc_recv_req)(struct fc_seq *,
+			      struct fc_frame *, struct fc_lport *);
+
+	/*
+	 * Start discovery for a local port.
+	 */
+	void (*disc_start)(void (*disc_callback)(struct fc_lport *,
+						 enum fc_disc_event),
+			   struct fc_lport *);
+
+	/*
+	 * Stop discovery for a given lport. This will remove
+	 * all discovered rports
+	 */
+	void (*disc_stop) (struct fc_lport *);
+
+	/*
+	 * Stop discovery for a given lport. This will block
+	 * until all discovered rports are deleted from the
+	 * FC transport class
+	 */
+	void (*disc_stop_final) (struct fc_lport *);
+};
+
+/* information used by the discovery layer */
+struct fc_disc {
+	unsigned char		retry_count;
+	unsigned char		delay;
+	unsigned char		pending;
+	unsigned char		requested;
+	unsigned short		seq_count;
+	unsigned char		buf_len;
+	enum fc_disc_event	event;
+
+	void (*disc_callback)(struct fc_lport *,
+			      enum fc_disc_event);
+
+	struct list_head	 rports;
+	struct fc_lport		*lport;
+	struct mutex		disc_mutex;
+	struct fc_gpn_ft_resp	partial_buf;	/* partial name buffer */
+	struct delayed_work	disc_work;
+};
+
+struct fc_lport {
+	struct list_head list;
+
+	/* Associations */
+	struct Scsi_Host	*host;
+	struct fc_exch_mgr	*emp;
+	struct fc_rport		*dns_rp;
+	struct fc_rport		*ptp_rp;
+	void			*scsi_priv;
+	struct fc_disc          disc;
+
+	/* Operational Information */
+	struct libfc_function_template tt;
+	u16			link_status;
+	enum fc_lport_state	state;
+	unsigned long		boot_time;
+
+	struct fc_host_statistics host_stats;
+	struct fcoe_dev_stats	*dev_stats[NR_CPUS];
+	u64			wwpn;
+	u64			wwnn;
+	u8			retry_count;
+
+	/* Capabilities */
+	u32			sg_supp:1;	/* scatter gather supported */
+	u32			seq_offload:1;	/* seq offload supported */
+	u32			crc_offload:1;	/* crc offload supported */
+	u32			lro_enabled:1;	/* large receive offload */
+	u32			mfs;	        /* max FC payload size */
+	unsigned int		service_params;
+	unsigned int		e_d_tov;
+	unsigned int		r_a_tov;
+	u8			max_retry_count;
+	u16			link_speed;
+	u16			link_supported_speeds;
+	u16			lro_xid;	/* max xid for fcoe lro */
+	struct fc_ns_fts	fcts;	        /* FC-4 type masks */
+	struct fc_els_rnid_gen	rnid_gen;	/* RNID information */
+
+	/* Semaphores */
+	struct mutex lp_mutex;
+
+	/* Miscellaneous */
+	struct delayed_work	retry_work;
+	struct delayed_work	disc_work;
+};
+
+/**
+ * FC_LPORT HELPER FUNCTIONS
+ *****************************/
+static inline void *lport_priv(const struct fc_lport *lp)
+{
+	return (void *)(lp + 1);
+}
+
+static inline int fc_lport_test_ready(struct fc_lport *lp)
+{
+	return lp->state == LPORT_ST_READY;
+}
+
+static inline void fc_set_wwnn(struct fc_lport *lp, u64 wwnn)
+{
+	lp->wwnn = wwnn;
+}
+
+static inline void fc_set_wwpn(struct fc_lport *lp, u64 wwnn)
+{
+	lp->wwpn = wwnn;
+}
+
+static inline void fc_lport_state_enter(struct fc_lport *lp,
+					enum fc_lport_state state)
+{
+	if (state != lp->state)
+		lp->retry_count = 0;
+	lp->state = state;
+}
+
+
+/**
+ * LOCAL PORT LAYER
+ *****************************/
+int fc_lport_init(struct fc_lport *lp);
+
+/*
+ * Destroy the specified local port by finding and freeing all
+ * fc_rports associated with it and then by freeing the fc_lport
+ * itself.
+ */
+int fc_lport_destroy(struct fc_lport *lp);
+
+/*
+ * Logout the specified local port from the fabric
+ */
+int fc_fabric_logoff(struct fc_lport *lp);
+
+/*
+ * Initiate the LP state machine. This handler will use fc_host_attr
+ * to store the FLOGI service parameters, so fc_host_attr must be
+ * initialized before calling this handler.
+ */
+int fc_fabric_login(struct fc_lport *lp);
+
+/*
+ * The link is up for the given local port.
+ */
+void fc_linkup(struct fc_lport *);
+
+/*
+ * Link is down for the given local port.
+ */
+void fc_linkdown(struct fc_lport *);
+
+/*
+ * Pause and unpause traffic.
+ */
+void fc_pause(struct fc_lport *);
+void fc_unpause(struct fc_lport *);
+
+/*
+ * Configure the local port.
+ */
+int fc_lport_config(struct fc_lport *);
+
+/*
+ * Reset the local port.
+ */
+int fc_lport_reset(struct fc_lport *);
+
+/*
+ * Set the mfs or reset
+ */
+int fc_set_mfs(struct fc_lport *lp, u32 mfs);
+
+
+/**
+ * REMOTE PORT LAYER
+ *****************************/
+int fc_rport_init(struct fc_lport *lp);
+void fc_rport_terminate_io(struct fc_rport *rp);
+
+/**
+ * DISCOVERY LAYER
+ *****************************/
+int fc_disc_init(struct fc_lport *lp);
+
+
+/**
+ * SCSI LAYER
+ *****************************/
+/*
+ * Initialize the SCSI block of libfc
+ */
+int fc_fcp_init(struct fc_lport *);
+
+/*
+ * This section provides an API which allows direct interaction
+ * with the SCSI-ml. Each of these functions satisfies a function
+ * pointer defined in Scsi_Host and therefore is always called
+ * directly from the SCSI-ml.
+ */
+int fc_queuecommand(struct scsi_cmnd *sc_cmd,
+		    void (*done)(struct scsi_cmnd *));
+
+/*
+ * complete processing of a fcp packet
+ *
+ * This function may sleep if a fsp timer is pending.
+ * The host lock must not be held by caller.
+ */
+void fc_fcp_complete(struct fc_fcp_pkt *fsp);
+
+/*
+ * Send an ABTS frame to the target device. The sc_cmd argument
+ * is a pointer to the SCSI command to be aborted.
+ */
+int fc_eh_abort(struct scsi_cmnd *sc_cmd);
+
+/*
+ * Reset a LUN by sending send the tm cmd to the target.
+ */
+int fc_eh_device_reset(struct scsi_cmnd *sc_cmd);
+
+/*
+ * Reset the host adapter.
+ */
+int fc_eh_host_reset(struct scsi_cmnd *sc_cmd);
+
+/*
+ * Check rport status.
+ */
+int fc_slave_alloc(struct scsi_device *sdev);
+
+/*
+ * Adjust the queue depth.
+ */
+int fc_change_queue_depth(struct scsi_device *sdev, int qdepth);
+
+/*
+ * Change the tag type.
+ */
+int fc_change_queue_type(struct scsi_device *sdev, int tag_type);
+
+/*
+ * Free memory pools used by the FCP layer.
+ */
+void fc_fcp_destroy(struct fc_lport *);
+
+/**
+ * ELS/CT interface
+ *****************************/
+/*
+ * Initializes ELS/CT interface
+ */
+int fc_elsct_init(struct fc_lport *lp);
+
+
+/**
+ * EXCHANGE MANAGER LAYER
+ *****************************/
+/*
+ * Initializes Exchange Manager related
+ * function pointers in struct libfc_function_template.
+ */
+int fc_exch_init(struct fc_lport *lp);
+
+/*
+ * Allocates an Exchange Manager (EM).
+ *
+ * The EM manages exchanges for their allocation and
+ * free, also allows exchange lookup for received
+ * frame.
+ *
+ * The class is used for initializing FC class of
+ * allocated exchange from EM.
+ *
+ * The min_xid and max_xid will limit new
+ * exchange ID (XID) within this range for
+ * a new exchange.
+ * The LLD may choose to have multiple EMs,
+ * e.g. one EM instance per CPU receive thread in LLD.
+ * The LLD can use exch_get() of struct libfc_function_template
+ * to specify XID for a new exchange within
+ * a specified EM instance.
+ *
+ * The em_idx to uniquely identify an EM instance.
+ */
+struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *lp,
+				      enum fc_class class,
+				      u16 min_xid,
+				      u16 max_xid);
+
+/*
+ * Free an exchange manager.
+ */
+void fc_exch_mgr_free(struct fc_exch_mgr *mp);
+
+/*
+ * Receive a frame on specified local port and exchange manager.
+ */
+void fc_exch_recv(struct fc_lport *lp, struct fc_exch_mgr *mp,
+		  struct fc_frame *fp);
+
+/*
+ * This function is for exch_seq_send function pointer in
+ * struct libfc_function_template, see comment block on
+ * exch_seq_send for description of this function.
+ */
+struct fc_seq *fc_exch_seq_send(struct fc_lport *lp,
+				struct fc_frame *fp,
+				void (*resp)(struct fc_seq *sp,
+					     struct fc_frame *fp,
+					     void *arg),
+				void (*destructor)(struct fc_seq *sp,
+						   void *arg),
+				void *arg, u32 timer_msec);
+
+/*
+ * send a frame using existing sequence and exchange.
+ */
+int fc_seq_send(struct fc_lport *lp, struct fc_seq *sp, struct fc_frame *fp);
+
+/*
+ * Send ELS response using mainly infomation
+ * in exchange and sequence in EM layer.
+ */
+void fc_seq_els_rsp_send(struct fc_seq *sp, enum fc_els_cmd els_cmd,
+			 struct fc_seq_els_data *els_data);
+
+/*
+ * This function is for seq_exch_abort function pointer in
+ * struct libfc_function_template, see comment block on
+ * seq_exch_abort for description of this function.
+ */
+int fc_seq_exch_abort(const struct fc_seq *req_sp, unsigned int timer_msec);
+
+/*
+ * Indicate that an exchange/sequence tuple is complete and the memory
+ * allocated for the related objects may be freed.
+ */
+void fc_exch_done(struct fc_seq *sp);
+
+/*
+ * Assigns a EM and XID for a frame and then allocates
+ * a new exchange and sequence pair.
+ * The fp can be used to determine free XID.
+ */
+struct fc_exch *fc_exch_get(struct fc_lport *lp, struct fc_frame *fp);
+
+/*
+ * Allocate a new exchange and sequence pair.
+ * if ex_id is zero then next free exchange id
+ * from specified exchange manger mp will be assigned.
+ */
+struct fc_exch *fc_exch_alloc(struct fc_exch_mgr *mp,
+			      struct fc_frame *fp, u16 ex_id);
+/*
+ * Start a new sequence on the same exchange as the supplied sequence.
+ */
+struct fc_seq *fc_seq_start_next(struct fc_seq *sp);
+
+/*
+ * 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.
+ */
+void fc_exch_mgr_reset(struct fc_exch_mgr *, u32 s_id, u32 d_id);
+
+/*
+ * Functions for fc_functions_template
+ */
+void fc_get_host_speed(struct Scsi_Host *shost);
+void fc_get_host_port_type(struct Scsi_Host *shost);
+void fc_get_host_port_state(struct Scsi_Host *shost);
+void fc_set_rport_loss_tmo(struct fc_rport *rport, u32 timeout);
+struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *);
+
+/*
+ * module setup functions.
+ */
+int fc_setup_exch_mgr(void);
+void fc_destroy_exch_mgr(void);
+int fc_setup_rport(void);
+void fc_destroy_rport(void);
+
+#endif /* _LIBFC_H_ */