[linux-2.6-block.git] / include / scsi / fc_encode.h

/*
 * 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;
		struct fc_ns_rff_id rff;
		struct fc_ns_fid fid;
		struct fc_ns_rsnn snn;
		struct fc_ns_rspn spn;
	} 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_adisc_fill() - Fill in adisc request frame
 * @lport: local port.
 * @fp: fc frame where payload will be placed.
 */
static inline void fc_adisc_fill(struct fc_lport *lport, struct fc_frame *fp)
{
	struct fc_els_adisc *adisc;

	adisc = fc_frame_payload_get(fp, sizeof(*adisc));
	memset(adisc, 0, sizeof(*adisc));
	adisc->adisc_cmd = ELS_ADISC;
	put_unaligned_be64(lport->wwpn, &adisc->adisc_wwpn);
	put_unaligned_be64(lport->wwnn, &adisc->adisc_wwnn);
	hton24(adisc->adisc_port_id, fc_host_port_id(lport->host));
}

/**
 * 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
 * @lport: local port.
 * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
 * @fp: frame to contain payload.
 * @op: CT opcode.
 * @r_ctl: pointer to FC header R_CTL.
 * @fh_type: pointer to FC-4 type.
 */
static inline int fc_ct_fill(struct fc_lport *lport,
		      u32 fc_id, struct fc_frame *fp,
		      unsigned int op, enum fc_rctl *r_ctl,
		      enum fc_fh_type *fh_type)
{
	struct fc_ct_req *ct;
	size_t len;

	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_GPN_ID:
		ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_fid));
		hton24(ct->payload.fid.fp_fid, fc_id);
		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_RFF_ID:
		ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id));
		hton24(ct->payload.rff.fr_fid.fp_fid,
		       fc_host_port_id(lport->host));
		ct->payload.rff.fr_type = FC_TYPE_FCP;
		if (lport->service_params & FCP_SPPF_INIT_FCN)
			ct->payload.rff.fr_feat = FCP_FEAT_INIT;
		if (lport->service_params & FCP_SPPF_TARG_FCN)
			ct->payload.rff.fr_feat |= FCP_FEAT_TARG;
		break;

	case FC_NS_RNN_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));
		put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
		break;

	case FC_NS_RSPN_ID:
		len = strnlen(fc_host_symbolic_name(lport->host), 255);
		ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len);
		hton24(ct->payload.spn.fr_fid.fp_fid,
		       fc_host_port_id(lport->host));
		strncpy(ct->payload.spn.fr_name,
			fc_host_symbolic_name(lport->host), len);
		ct->payload.spn.fr_name_len = len;
		break;

	case FC_NS_RSNN_NN:
		len = strnlen(fc_host_symbolic_name(lport->host), 255);
		ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len);
		put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
		strncpy(ct->payload.snn.fr_name,
			fc_host_symbolic_name(lport->host), len);
		ct->payload.snn.fr_name_len = len;
		break;

	default:
		return -EINVAL;
	}
	*r_ctl = FC_RCTL_DD_UNSOL_CTL;
	*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);
	if (lport->does_npiv)
		sp->sp_features = htons(FC_SP_FT_NPIV);
}

/**
 * fc_fdisc_fill - Fill in a fdisc request frame.
 */
static inline void fc_fdisc_fill(struct fc_lport *lport, struct fc_frame *fp)
{
	struct fc_els_csp *sp;
	struct fc_els_cssp *cp;
	struct fc_els_flogi *fdisc;

	fdisc = fc_frame_payload_get(fp, sizeof(*fdisc));
	memset(fdisc, 0, sizeof(*fdisc));
	fdisc->fl_cmd = (u8) ELS_FDISC;
	put_unaligned_be64(lport->wwpn, &fdisc->fl_wwpn);
	put_unaligned_be64(lport->wwnn, &fdisc->fl_wwnn);
	sp = &fdisc->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 = &fdisc->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,
		       u32 did,
		       struct fc_frame *fp, unsigned int op,
		       enum fc_rctl *r_ctl, enum fc_fh_type *fh_type)
{
	switch (op) {
	case ELS_ADISC:
		fc_adisc_fill(lport, fp);
		break;

	case ELS_PLOGI:
		fc_plogi_fill(lport, fp, ELS_PLOGI);
		break;

	case ELS_FLOGI:
		fc_flogi_fill(lport, fp);
		break;

	case ELS_FDISC:
		fc_fdisc_fill(lport, fp);
		break;

	case ELS_LOGO:
		fc_logo_fill(lport, fp);
		break;

	case ELS_RTV:
		fc_rtv_fill(lport, fp);
		break;

	case ELS_REC:
		fc_rec_fill(lport, fp);
		break;

	case ELS_PRLI:
		fc_prli_fill(lport, fp);
		break;

	case ELS_SCR:
		fc_scr_fill(lport, fp);
		break;

	default:
		return -EINVAL;
	}

	*r_ctl = FC_RCTL_ELS_REQ;
	*fh_type = FC_TYPE_ELS;
	return 0;
}
#endif /* _FC_ENCODE_H_ */
Commit	Line	Data
42e9a92f RL	1	/*
	2	* Copyright(c) 2008 Intel Corporation. All rights reserved.
	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms and conditions of the GNU General Public License,
	6	* version 2, as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope it will be useful, but WITHOUT
	9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	10	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	11	* more details.
	12	*
	13	* You should have received a copy of the GNU General Public License along with
	14	* this program; if not, write to the Free Software Foundation, Inc.,
	15	* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
	16	*
	17	* Maintained at www.Open-FCoE.org
	18	*/
	19
	20	#ifndef _FC_ENCODE_H_
	21	#define _FC_ENCODE_H_
	22	#include <asm/unaligned.h>
	23
	24	struct fc_ns_rft {
	25	struct fc_ns_fid fid; /* port ID object */
	26	struct fc_ns_fts fts; /* FC4-types object */
	27	};
	28
	29	struct fc_ct_req {
	30	struct fc_ct_hdr hdr;
	31	union {
	32	struct fc_ns_gid_ft gid;
	33	struct fc_ns_rn_id rn;
	34	struct fc_ns_rft rft;
ab593b18	35	struct fc_ns_rff_id rff;
2ab7e1ec	36	struct fc_ns_fid fid;
5baa17c3	37	struct fc_ns_rsnn snn;
c9866a54	38	struct fc_ns_rspn spn;
42e9a92f RL	39	} payload;
	40	};
	41
	42	/**
	43	* fill FC header fields in specified fc_frame
	44	*/
	45	static inline void fc_fill_fc_hdr(struct fc_frame *fp, enum fc_rctl r_ctl,
	46	u32 did, u32 sid, enum fc_fh_type type,
	47	u32 f_ctl, u32 parm_offset)
	48	{
	49	struct fc_frame_header *fh;
	50
	51	fh = fc_frame_header_get(fp);
	52	WARN_ON(r_ctl == 0);
	53	fh->fh_r_ctl = r_ctl;
	54	hton24(fh->fh_d_id, did);
	55	hton24(fh->fh_s_id, sid);
	56	fh->fh_type = type;
	57	hton24(fh->fh_f_ctl, f_ctl);
	58	fh->fh_cs_ctl = 0;
	59	fh->fh_df_ctl = 0;
	60	fh->fh_parm_offset = htonl(parm_offset);
	61	}
	62
370c3bd0 JE	63	/**
	64	* fc_adisc_fill() - Fill in adisc request frame
	65	* @lport: local port.
	66	* @fp: fc frame where payload will be placed.
	67	*/
	68	static inline void fc_adisc_fill(struct fc_lport lport, struct fc_frame fp)
	69	{
	70	struct fc_els_adisc *adisc;
	71
	72	adisc = fc_frame_payload_get(fp, sizeof(*adisc));
	73	memset(adisc, 0, sizeof(*adisc));
	74	adisc->adisc_cmd = ELS_ADISC;
	75	put_unaligned_be64(lport->wwpn, &adisc->adisc_wwpn);
	76	put_unaligned_be64(lport->wwnn, &adisc->adisc_wwnn);
	77	hton24(adisc->adisc_port_id, fc_host_port_id(lport->host));
	78	}
	79
42e9a92f RL	80	/**
	81	* fc_ct_hdr_fill- fills ct header and reset ct payload
	82	* returns pointer to ct request.
	83	*/
	84	static inline struct fc_ct_req fc_ct_hdr_fill(const struct fc_frame fp,
	85	unsigned int op, size_t req_size)
	86	{
	87	struct fc_ct_req *ct;
	88	size_t ct_plen;
	89
	90	ct_plen = sizeof(struct fc_ct_hdr) + req_size;
	91	ct = fc_frame_payload_get(fp, ct_plen);
	92	memset(ct, 0, ct_plen);
	93	ct->hdr.ct_rev = FC_CT_REV;
	94	ct->hdr.ct_fs_type = FC_FST_DIR;
	95	ct->hdr.ct_fs_subtype = FC_NS_SUBTYPE;
	96	ct->hdr.ct_cmd = htons((u16) op);
	97	return ct;
	98	}
	99
	100	/**
2ab7e1ec JE	101	* fc_ct_fill() - Fill in a name service request frame
	102	* @lport: local port.
	103	* @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
	104	* @fp: frame to contain payload.
	105	* @op: CT opcode.
	106	* @r_ctl: pointer to FC header R_CTL.
	107	* @fh_type: pointer to FC-4 type.
42e9a92f	108	*/
a46f327a	109	static inline int fc_ct_fill(struct fc_lport *lport,
2ab7e1ec	110	u32 fc_id, struct fc_frame *fp,
a46f327a	111	unsigned int op, enum fc_rctl *r_ctl,
42e9a92f RL	112	enum fc_fh_type *fh_type)
	113	{
	114	struct fc_ct_req *ct;
5f9a056d	115	size_t len;
42e9a92f RL	116
	117	switch (op) {
	118	case FC_NS_GPN_FT:
	119	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_gid_ft));
	120	ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
	121	break;
	122
2ab7e1ec JE	123	case FC_NS_GPN_ID:
	124	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_fid));
	125	hton24(ct->payload.fid.fp_fid, fc_id);
	126	break;
	127
42e9a92f RL	128	case FC_NS_RFT_ID:
	129	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rft));
	130	hton24(ct->payload.rft.fid.fp_fid,
	131	fc_host_port_id(lport->host));
	132	ct->payload.rft.fts = lport->fcts;
	133	break;
	134
ab593b18 JE	135	case FC_NS_RFF_ID:
	136	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id));
	137	hton24(ct->payload.rff.fr_fid.fp_fid,
	138	fc_host_port_id(lport->host));
	139	ct->payload.rff.fr_type = FC_TYPE_FCP;
	140	if (lport->service_params & FCP_SPPF_INIT_FCN)
	141	ct->payload.rff.fr_feat = FCP_FEAT_INIT;
	142	if (lport->service_params & FCP_SPPF_TARG_FCN)
	143	ct->payload.rff.fr_feat \|= FCP_FEAT_TARG;
	144	break;
	145
c9c7bd7a	146	case FC_NS_RNN_ID:
42e9a92f RL	147	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id));
	148	hton24(ct->payload.rn.fr_fid.fp_fid,
	149	fc_host_port_id(lport->host));
c9c7bd7a	150	put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
42e9a92f RL	151	break;
42e9a92f RL	152
c9866a54	153	case FC_NS_RSPN_ID:
5f9a056d JE	154	len = strnlen(fc_host_symbolic_name(lport->host), 255);
5f9a056d JE	155	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len);
c9866a54 CL	156	hton24(ct->payload.spn.fr_fid.fp_fid,
	157	fc_host_port_id(lport->host));
	158	strncpy(ct->payload.spn.fr_name,
5f9a056d JE	159	fc_host_symbolic_name(lport->host), len);
5f9a056d JE	160	ct->payload.spn.fr_name_len = len;
c9866a54 CL	161	break;
c9866a54 CL	162
5baa17c3	163	case FC_NS_RSNN_NN:
5f9a056d JE	164	len = strnlen(fc_host_symbolic_name(lport->host), 255);
5f9a056d JE	165	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len);
5baa17c3 CL	166	put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
5baa17c3 CL	167	strncpy(ct->payload.snn.fr_name,
5f9a056d JE	168	fc_host_symbolic_name(lport->host), len);
5f9a056d JE	169	ct->payload.snn.fr_name_len = len;
5baa17c3 CL	170	break;
5baa17c3 CL	171
42e9a92f	172	default:
42e9a92f RL	173	return -EINVAL;
	174	}
	175	*r_ctl = FC_RCTL_DD_UNSOL_CTL;
42e9a92f RL	176	*fh_type = FC_TYPE_CT;
	177	return 0;
	178	}
	179
	180	/**
	181	* fc_plogi_fill - Fill in plogi request frame
	182	*/
	183	static inline void fc_plogi_fill(struct fc_lport lport, struct fc_frame fp,
	184	unsigned int op)
	185	{
	186	struct fc_els_flogi *plogi;
	187	struct fc_els_csp *csp;
	188	struct fc_els_cssp *cp;
	189
	190	plogi = fc_frame_payload_get(fp, sizeof(*plogi));
	191	memset(plogi, 0, sizeof(*plogi));
	192	plogi->fl_cmd = (u8) op;
	193	put_unaligned_be64(lport->wwpn, &plogi->fl_wwpn);
	194	put_unaligned_be64(lport->wwnn, &plogi->fl_wwnn);
	195
	196	csp = &plogi->fl_csp;
	197	csp->sp_hi_ver = 0x20;
	198	csp->sp_lo_ver = 0x20;
	199	csp->sp_bb_cred = htons(10); /* this gets set by gateway */
	200	csp->sp_bb_data = htons((u16) lport->mfs);
	201	cp = &plogi->fl_cssp[3 - 1]; /* class 3 parameters */
	202	cp->cp_class = htons(FC_CPC_VALID \| FC_CPC_SEQ);
	203	csp->sp_features = htons(FC_SP_FT_CIRO);
	204	csp->sp_tot_seq = htons(255); /* seq. we accept */
	205	csp->sp_rel_off = htons(0x1f);
	206	csp->sp_e_d_tov = htonl(lport->e_d_tov);
	207
	208	cp->cp_rdfs = htons((u16) lport->mfs);
	209	cp->cp_con_seq = htons(255);
	210	cp->cp_open_seq = 1;
	211	}
	212
	213	/**
	214	* fc_flogi_fill - Fill in a flogi request frame.
	215	*/
	216	static inline void fc_flogi_fill(struct fc_lport lport, struct fc_frame fp)
	217	{
	218	struct fc_els_csp *sp;
	219	struct fc_els_cssp *cp;
	220	struct fc_els_flogi *flogi;
	221
	222	flogi = fc_frame_payload_get(fp, sizeof(*flogi));
	223	memset(flogi, 0, sizeof(*flogi));
	224	flogi->fl_cmd = (u8) ELS_FLOGI;
	225	put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn);
	226	put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn);
	227	sp = &flogi->fl_csp;
	228	sp->sp_hi_ver = 0x20;
	229	sp->sp_lo_ver = 0x20;
	230	sp->sp_bb_cred = htons(10); /* this gets set by gateway */
	231	sp->sp_bb_data = htons((u16) lport->mfs);
	232	cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */
	233	cp->cp_class = htons(FC_CPC_VALID \| FC_CPC_SEQ);
db36c06c CL	234	if (lport->does_npiv)
	235	sp->sp_features = htons(FC_SP_FT_NPIV);
	236	}
	237
	238	/**
	239	* fc_fdisc_fill - Fill in a fdisc request frame.
	240	*/
	241	static inline void fc_fdisc_fill(struct fc_lport lport, struct fc_frame fp)
	242	{
	243	struct fc_els_csp *sp;
	244	struct fc_els_cssp *cp;
	245	struct fc_els_flogi *fdisc;
	246
	247	fdisc = fc_frame_payload_get(fp, sizeof(*fdisc));
	248	memset(fdisc, 0, sizeof(*fdisc));
	249	fdisc->fl_cmd = (u8) ELS_FDISC;
	250	put_unaligned_be64(lport->wwpn, &fdisc->fl_wwpn);
	251	put_unaligned_be64(lport->wwnn, &fdisc->fl_wwnn);
	252	sp = &fdisc->fl_csp;
	253	sp->sp_hi_ver = 0x20;
	254	sp->sp_lo_ver = 0x20;
	255	sp->sp_bb_cred = htons(10); /* this gets set by gateway */
	256	sp->sp_bb_data = htons((u16) lport->mfs);
	257	cp = &fdisc->fl_cssp[3 - 1]; /* class 3 parameters */
	258	cp->cp_class = htons(FC_CPC_VALID \| FC_CPC_SEQ);
42e9a92f RL	259	}
	260
	261	/**
	262	* fc_logo_fill - Fill in a logo request frame.
	263	*/
	264	static inline void fc_logo_fill(struct fc_lport lport, struct fc_frame fp)
	265	{
	266	struct fc_els_logo *logo;
	267
	268	logo = fc_frame_payload_get(fp, sizeof(*logo));
	269	memset(logo, 0, sizeof(*logo));
	270	logo->fl_cmd = ELS_LOGO;
	271	hton24(logo->fl_n_port_id, fc_host_port_id(lport->host));
	272	logo->fl_n_port_wwn = htonll(lport->wwpn);
	273	}
	274
	275	/**
	276	* fc_rtv_fill - Fill in RTV (read timeout value) request frame.
	277	*/
	278	static inline void fc_rtv_fill(struct fc_lport lport, struct fc_frame fp)
	279	{
	280	struct fc_els_rtv *rtv;
	281
	282	rtv = fc_frame_payload_get(fp, sizeof(*rtv));
	283	memset(rtv, 0, sizeof(*rtv));
	284	rtv->rtv_cmd = ELS_RTV;
	285	}
	286
	287	/**
	288	* fc_rec_fill - Fill in rec request frame
	289	*/
	290	static inline void fc_rec_fill(struct fc_lport lport, struct fc_frame fp)
	291	{
	292	struct fc_els_rec *rec;
	293	struct fc_exch *ep = fc_seq_exch(fr_seq(fp));
	294
	295	rec = fc_frame_payload_get(fp, sizeof(*rec));
	296	memset(rec, 0, sizeof(*rec));
	297	rec->rec_cmd = ELS_REC;
	298	hton24(rec->rec_s_id, fc_host_port_id(lport->host));
	299	rec->rec_ox_id = htons(ep->oxid);
	300	rec->rec_rx_id = htons(ep->rxid);
	301	}
	302
	303	/**
	304	* fc_prli_fill - Fill in prli request frame
	305	*/
	306	static inline void fc_prli_fill(struct fc_lport lport, struct fc_frame fp)
	307	{
	308	struct {
	309	struct fc_els_prli prli;
	310	struct fc_els_spp spp;
	311	} *pp;
	312
	313	pp = fc_frame_payload_get(fp, sizeof(*pp));
	314	memset(pp, 0, sizeof(*pp));
	315	pp->prli.prli_cmd = ELS_PRLI;
	316	pp->prli.prli_spp_len = sizeof(struct fc_els_spp);
	317	pp->prli.prli_len = htons(sizeof(*pp));
	318	pp->spp.spp_type = FC_TYPE_FCP;
	319	pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR;
	320	pp->spp.spp_params = htonl(lport->service_params);
	321	}
	322
323	/**
324	* fc_scr_fill - Fill in a scr request frame.
325	*/
326	static inline void fc_scr_fill(struct fc_lport lport, struct fc_frame fp)
327	{
328	struct fc_els_scr *scr;
329
330	scr = fc_frame_payload_get(fp, sizeof(*scr));
331	memset(scr, 0, sizeof(*scr));
332	scr->scr_cmd = ELS_SCR;
333	scr->scr_reg_func = ELS_SCRF_FULL;
334	}
335
336	/**
337	* fc_els_fill - Fill in an ELS request frame
338	*/
9fb9d328	339	static inline int fc_els_fill(struct fc_lport *lport,
a46f327a	340	u32 did,
42e9a92f	341	struct fc_frame *fp, unsigned int op,
a46f327a	342	enum fc_rctl r_ctl, enum fc_fh_type fh_type)
42e9a92f RL	343	{
42e9a92f RL	344	switch (op) {
370c3bd0 JE	345	case ELS_ADISC:
	346	fc_adisc_fill(lport, fp);
	347	break;
	348
42e9a92f RL	349	case ELS_PLOGI:
42e9a92f RL	350	fc_plogi_fill(lport, fp, ELS_PLOGI);
42e9a92f RL	351	break;
	352
	353	case ELS_FLOGI:
	354	fc_flogi_fill(lport, fp);
42e9a92f RL	355	break;
42e9a92f RL	356
db36c06c CL	357	case ELS_FDISC:
	358	fc_fdisc_fill(lport, fp);
	359	break;
	360
42e9a92f RL	361	case ELS_LOGO:
42e9a92f RL	362	fc_logo_fill(lport, fp);
42e9a92f RL	363	break;
	364
	365	case ELS_RTV:
	366	fc_rtv_fill(lport, fp);
42e9a92f RL	367	break;
	368
	369	case ELS_REC:
	370	fc_rec_fill(lport, fp);
42e9a92f RL	371	break;
	372
	373	case ELS_PRLI:
	374	fc_prli_fill(lport, fp);
42e9a92f RL	375	break;
	376
	377	case ELS_SCR:
	378	fc_scr_fill(lport, fp);
42e9a92f RL	379	break;
	380
	381	default:
42e9a92f RL	382	return -EINVAL;
	383	}
	384
	385	*r_ctl = FC_RCTL_ELS_REQ;
	386	*fh_type = FC_TYPE_ELS;
	387	return 0;
	388	}
	389	#endif /* _FC_ENCODE_H_ */