[net-next-2.6.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>

/*
 * 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 */
};

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, lport->port_id);
}

/**
 * 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, lport->port_id);
		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, lport->port_id);
		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, lport->port_id);
		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, lport->port_id);
		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, lport->port_id);
	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, lport->port_id);
	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
24f089e2 JE	24	/*
	25	* F_CTL values for simple requests and responses.
	26	*/
	27	#define FC_FCTL_REQ (FC_FC_FIRST_SEQ \| FC_FC_END_SEQ \| FC_FC_SEQ_INIT)
	28	#define FC_FCTL_RESP (FC_FC_EX_CTX \| FC_FC_LAST_SEQ \| \
	29	FC_FC_END_SEQ \| FC_FC_SEQ_INIT)
	30
42e9a92f RL	31	struct fc_ns_rft {
	32	struct fc_ns_fid fid; /* port ID object */
	33	struct fc_ns_fts fts; /* FC4-types object */
	34	};
	35
	36	struct fc_ct_req {
	37	struct fc_ct_hdr hdr;
	38	union {
	39	struct fc_ns_gid_ft gid;
	40	struct fc_ns_rn_id rn;
	41	struct fc_ns_rft rft;
ab593b18	42	struct fc_ns_rff_id rff;
2ab7e1ec	43	struct fc_ns_fid fid;
5baa17c3	44	struct fc_ns_rsnn snn;
c9866a54	45	struct fc_ns_rspn spn;
42e9a92f RL	46	} payload;
	47	};
	48
	49	/**
	50	* fill FC header fields in specified fc_frame
	51	*/
	52	static inline void fc_fill_fc_hdr(struct fc_frame *fp, enum fc_rctl r_ctl,
	53	u32 did, u32 sid, enum fc_fh_type type,
	54	u32 f_ctl, u32 parm_offset)
	55	{
	56	struct fc_frame_header *fh;
	57
	58	fh = fc_frame_header_get(fp);
	59	WARN_ON(r_ctl == 0);
	60	fh->fh_r_ctl = r_ctl;
	61	hton24(fh->fh_d_id, did);
	62	hton24(fh->fh_s_id, sid);
	63	fh->fh_type = type;
	64	hton24(fh->fh_f_ctl, f_ctl);
	65	fh->fh_cs_ctl = 0;
	66	fh->fh_df_ctl = 0;
	67	fh->fh_parm_offset = htonl(parm_offset);
	68	}
	69
370c3bd0 JE	70	/**
	71	* fc_adisc_fill() - Fill in adisc request frame
	72	* @lport: local port.
	73	* @fp: fc frame where payload will be placed.
	74	*/
	75	static inline void fc_adisc_fill(struct fc_lport lport, struct fc_frame fp)
	76	{
	77	struct fc_els_adisc *adisc;
	78
	79	adisc = fc_frame_payload_get(fp, sizeof(*adisc));
	80	memset(adisc, 0, sizeof(*adisc));
	81	adisc->adisc_cmd = ELS_ADISC;
	82	put_unaligned_be64(lport->wwpn, &adisc->adisc_wwpn);
	83	put_unaligned_be64(lport->wwnn, &adisc->adisc_wwnn);
7b2787ec	84	hton24(adisc->adisc_port_id, lport->port_id);
370c3bd0 JE	85	}
370c3bd0 JE	86
42e9a92f RL	87	/**
	88	* fc_ct_hdr_fill- fills ct header and reset ct payload
	89	* returns pointer to ct request.
	90	*/
	91	static inline struct fc_ct_req fc_ct_hdr_fill(const struct fc_frame fp,
	92	unsigned int op, size_t req_size)
	93	{
	94	struct fc_ct_req *ct;
	95	size_t ct_plen;
	96
	97	ct_plen = sizeof(struct fc_ct_hdr) + req_size;
	98	ct = fc_frame_payload_get(fp, ct_plen);
	99	memset(ct, 0, ct_plen);
	100	ct->hdr.ct_rev = FC_CT_REV;
	101	ct->hdr.ct_fs_type = FC_FST_DIR;
	102	ct->hdr.ct_fs_subtype = FC_NS_SUBTYPE;
	103	ct->hdr.ct_cmd = htons((u16) op);
	104	return ct;
	105	}
	106
	107	/**
2ab7e1ec JE	108	* fc_ct_fill() - Fill in a name service request frame
	109	* @lport: local port.
	110	* @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
	111	* @fp: frame to contain payload.
	112	* @op: CT opcode.
	113	* @r_ctl: pointer to FC header R_CTL.
	114	* @fh_type: pointer to FC-4 type.
42e9a92f	115	*/
a46f327a	116	static inline int fc_ct_fill(struct fc_lport *lport,
2ab7e1ec	117	u32 fc_id, struct fc_frame *fp,
a46f327a	118	unsigned int op, enum fc_rctl *r_ctl,
42e9a92f RL	119	enum fc_fh_type *fh_type)
	120	{
	121	struct fc_ct_req *ct;
5f9a056d	122	size_t len;
42e9a92f RL	123
	124	switch (op) {
	125	case FC_NS_GPN_FT:
	126	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_gid_ft));
	127	ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
	128	break;
	129
2ab7e1ec JE	130	case FC_NS_GPN_ID:
	131	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_fid));
	132	hton24(ct->payload.fid.fp_fid, fc_id);
	133	break;
	134
42e9a92f RL	135	case FC_NS_RFT_ID:
42e9a92f RL	136	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rft));
7b2787ec	137	hton24(ct->payload.rft.fid.fp_fid, lport->port_id);
42e9a92f RL	138	ct->payload.rft.fts = lport->fcts;
	139	break;
	140
ab593b18 JE	141	case FC_NS_RFF_ID:
ab593b18 JE	142	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id));
7b2787ec	143	hton24(ct->payload.rff.fr_fid.fp_fid, lport->port_id);
ab593b18 JE	144	ct->payload.rff.fr_type = FC_TYPE_FCP;
	145	if (lport->service_params & FCP_SPPF_INIT_FCN)
	146	ct->payload.rff.fr_feat = FCP_FEAT_INIT;
	147	if (lport->service_params & FCP_SPPF_TARG_FCN)
	148	ct->payload.rff.fr_feat \|= FCP_FEAT_TARG;
	149	break;
	150
c9c7bd7a	151	case FC_NS_RNN_ID:
42e9a92f	152	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id));
7b2787ec	153	hton24(ct->payload.rn.fr_fid.fp_fid, lport->port_id);
c9c7bd7a	154	put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
42e9a92f RL	155	break;
42e9a92f RL	156
c9866a54	157	case FC_NS_RSPN_ID:
5f9a056d JE	158	len = strnlen(fc_host_symbolic_name(lport->host), 255);
5f9a056d JE	159	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len);
7b2787ec	160	hton24(ct->payload.spn.fr_fid.fp_fid, lport->port_id);
c9866a54	161	strncpy(ct->payload.spn.fr_name,
5f9a056d JE	162	fc_host_symbolic_name(lport->host), len);
5f9a056d JE	163	ct->payload.spn.fr_name_len = len;
c9866a54 CL	164	break;
c9866a54 CL	165
5baa17c3	166	case FC_NS_RSNN_NN:
5f9a056d JE	167	len = strnlen(fc_host_symbolic_name(lport->host), 255);
5f9a056d JE	168	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len);
5baa17c3 CL	169	put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
5baa17c3 CL	170	strncpy(ct->payload.snn.fr_name,
5f9a056d JE	171	fc_host_symbolic_name(lport->host), len);
5f9a056d JE	172	ct->payload.snn.fr_name_len = len;
5baa17c3 CL	173	break;
5baa17c3 CL	174
42e9a92f	175	default:
42e9a92f RL	176	return -EINVAL;
	177	}
	178	*r_ctl = FC_RCTL_DD_UNSOL_CTL;
42e9a92f RL	179	*fh_type = FC_TYPE_CT;
	180	return 0;
	181	}
	182
	183	/**
	184	* fc_plogi_fill - Fill in plogi request frame
	185	*/
	186	static inline void fc_plogi_fill(struct fc_lport lport, struct fc_frame fp,
	187	unsigned int op)
	188	{
	189	struct fc_els_flogi *plogi;
	190	struct fc_els_csp *csp;
	191	struct fc_els_cssp *cp;
	192
	193	plogi = fc_frame_payload_get(fp, sizeof(*plogi));
	194	memset(plogi, 0, sizeof(*plogi));
	195	plogi->fl_cmd = (u8) op;
	196	put_unaligned_be64(lport->wwpn, &plogi->fl_wwpn);
	197	put_unaligned_be64(lport->wwnn, &plogi->fl_wwnn);
	198
	199	csp = &plogi->fl_csp;
	200	csp->sp_hi_ver = 0x20;
	201	csp->sp_lo_ver = 0x20;
	202	csp->sp_bb_cred = htons(10); /* this gets set by gateway */
	203	csp->sp_bb_data = htons((u16) lport->mfs);
	204	cp = &plogi->fl_cssp[3 - 1]; /* class 3 parameters */
	205	cp->cp_class = htons(FC_CPC_VALID \| FC_CPC_SEQ);
	206	csp->sp_features = htons(FC_SP_FT_CIRO);
	207	csp->sp_tot_seq = htons(255); /* seq. we accept */
	208	csp->sp_rel_off = htons(0x1f);
	209	csp->sp_e_d_tov = htonl(lport->e_d_tov);
	210
	211	cp->cp_rdfs = htons((u16) lport->mfs);
	212	cp->cp_con_seq = htons(255);
	213	cp->cp_open_seq = 1;
	214	}
	215
	216	/**
	217	* fc_flogi_fill - Fill in a flogi request frame.
	218	*/
	219	static inline void fc_flogi_fill(struct fc_lport lport, struct fc_frame fp)
	220	{
	221	struct fc_els_csp *sp;
	222	struct fc_els_cssp *cp;
	223	struct fc_els_flogi *flogi;
	224
	225	flogi = fc_frame_payload_get(fp, sizeof(*flogi));
	226	memset(flogi, 0, sizeof(*flogi));
	227	flogi->fl_cmd = (u8) ELS_FLOGI;
	228	put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn);
	229	put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn);
	230	sp = &flogi->fl_csp;
	231	sp->sp_hi_ver = 0x20;
	232	sp->sp_lo_ver = 0x20;
	233	sp->sp_bb_cred = htons(10); /* this gets set by gateway */
	234	sp->sp_bb_data = htons((u16) lport->mfs);
	235	cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */
	236	cp->cp_class = htons(FC_CPC_VALID \| FC_CPC_SEQ);
db36c06c CL	237	if (lport->does_npiv)
	238	sp->sp_features = htons(FC_SP_FT_NPIV);
	239	}
	240
	241	/**
	242	* fc_fdisc_fill - Fill in a fdisc request frame.
	243	*/
	244	static inline void fc_fdisc_fill(struct fc_lport lport, struct fc_frame fp)
	245	{
	246	struct fc_els_csp *sp;
	247	struct fc_els_cssp *cp;
	248	struct fc_els_flogi *fdisc;
	249
	250	fdisc = fc_frame_payload_get(fp, sizeof(*fdisc));
	251	memset(fdisc, 0, sizeof(*fdisc));
	252	fdisc->fl_cmd = (u8) ELS_FDISC;
	253	put_unaligned_be64(lport->wwpn, &fdisc->fl_wwpn);
	254	put_unaligned_be64(lport->wwnn, &fdisc->fl_wwnn);
	255	sp = &fdisc->fl_csp;
	256	sp->sp_hi_ver = 0x20;
	257	sp->sp_lo_ver = 0x20;
	258	sp->sp_bb_cred = htons(10); /* this gets set by gateway */
	259	sp->sp_bb_data = htons((u16) lport->mfs);
	260	cp = &fdisc->fl_cssp[3 - 1]; /* class 3 parameters */
	261	cp->cp_class = htons(FC_CPC_VALID \| FC_CPC_SEQ);
42e9a92f RL	262	}
	263
	264	/**
	265	* fc_logo_fill - Fill in a logo request frame.
	266	*/
	267	static inline void fc_logo_fill(struct fc_lport lport, struct fc_frame fp)
	268	{
	269	struct fc_els_logo *logo;
	270
	271	logo = fc_frame_payload_get(fp, sizeof(*logo));
	272	memset(logo, 0, sizeof(*logo));
	273	logo->fl_cmd = ELS_LOGO;
7b2787ec	274	hton24(logo->fl_n_port_id, lport->port_id);
42e9a92f RL	275	logo->fl_n_port_wwn = htonll(lport->wwpn);
	276	}
	277
	278	/**
	279	* fc_rtv_fill - Fill in RTV (read timeout value) request frame.
	280	*/
	281	static inline void fc_rtv_fill(struct fc_lport lport, struct fc_frame fp)
	282	{
	283	struct fc_els_rtv *rtv;
	284
	285	rtv = fc_frame_payload_get(fp, sizeof(*rtv));
	286	memset(rtv, 0, sizeof(*rtv));
	287	rtv->rtv_cmd = ELS_RTV;
	288	}
	289
	290	/**
	291	* fc_rec_fill - Fill in rec request frame
	292	*/
	293	static inline void fc_rec_fill(struct fc_lport lport, struct fc_frame fp)
	294	{
	295	struct fc_els_rec *rec;
	296	struct fc_exch *ep = fc_seq_exch(fr_seq(fp));
	297
	298	rec = fc_frame_payload_get(fp, sizeof(*rec));
	299	memset(rec, 0, sizeof(*rec));
	300	rec->rec_cmd = ELS_REC;
7b2787ec	301	hton24(rec->rec_s_id, lport->port_id);
42e9a92f RL	302	rec->rec_ox_id = htons(ep->oxid);
	303	rec->rec_rx_id = htons(ep->rxid);
	304	}
	305
	306	/**
	307	* fc_prli_fill - Fill in prli request frame
	308	*/
	309	static inline void fc_prli_fill(struct fc_lport lport, struct fc_frame fp)
	310	{
	311	struct {
	312	struct fc_els_prli prli;
	313	struct fc_els_spp spp;
	314	} *pp;
	315
	316	pp = fc_frame_payload_get(fp, sizeof(*pp));
	317	memset(pp, 0, sizeof(*pp));
	318	pp->prli.prli_cmd = ELS_PRLI;
	319	pp->prli.prli_spp_len = sizeof(struct fc_els_spp);
	320	pp->prli.prli_len = htons(sizeof(*pp));
	321	pp->spp.spp_type = FC_TYPE_FCP;
	322	pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR;
	323	pp->spp.spp_params = htonl(lport->service_params);
	324	}
	325
	326	/**
	327	* fc_scr_fill - Fill in a scr request frame.
	328	*/
	329	static inline void fc_scr_fill(struct fc_lport lport, struct fc_frame fp)
	330	{
	331	struct fc_els_scr *scr;
	332
	333	scr = fc_frame_payload_get(fp, sizeof(*scr));
	334	memset(scr, 0, sizeof(*scr));
	335	scr->scr_cmd = ELS_SCR;
	336	scr->scr_reg_func = ELS_SCRF_FULL;
	337	}
	338
	339	/**
	340	* fc_els_fill - Fill in an ELS request frame
	341	*/
9fb9d328	342	static inline int fc_els_fill(struct fc_lport *lport,
a46f327a	343	u32 did,
42e9a92f	344	struct fc_frame *fp, unsigned int op,
a46f327a	345	enum fc_rctl r_ctl, enum fc_fh_type fh_type)
42e9a92f RL	346	{
42e9a92f RL	347	switch (op) {
370c3bd0 JE	348	case ELS_ADISC:
	349	fc_adisc_fill(lport, fp);
	350	break;
	351
42e9a92f RL	352	case ELS_PLOGI:
42e9a92f RL	353	fc_plogi_fill(lport, fp, ELS_PLOGI);
42e9a92f RL	354	break;
	355
	356	case ELS_FLOGI:
	357	fc_flogi_fill(lport, fp);
42e9a92f RL	358	break;
42e9a92f RL	359
db36c06c CL	360	case ELS_FDISC:
	361	fc_fdisc_fill(lport, fp);
	362	break;
	363
42e9a92f RL	364	case ELS_LOGO:
42e9a92f RL	365	fc_logo_fill(lport, fp);
42e9a92f RL	366	break;
	367
	368	case ELS_RTV:
	369	fc_rtv_fill(lport, fp);
42e9a92f RL	370	break;
	371
	372	case ELS_REC:
	373	fc_rec_fill(lport, fp);
42e9a92f RL	374	break;
	375
	376	case ELS_PRLI:
	377	fc_prli_fill(lport, fp);
42e9a92f RL	378	break;
	379
	380	case ELS_SCR:
	381	fc_scr_fill(lport, fp);
42e9a92f RL	382	break;
	383
	384	default:
42e9a92f RL	385	return -EINVAL;
	386	}
	387
	388	*r_ctl = FC_RCTL_ELS_REQ;
	389	*fh_type = FC_TYPE_ELS;
	390	return 0;
	391	}
	392	#endif /* _FC_ENCODE_H_ */