[GitHub/mt8127/android_kernel_alcatel_ttab.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;
};

static inline void __fc_fill_fc_hdr(struct fc_frame_header *fh,
				    enum fc_rctl r_ctl,
				    u32 did, u32 sid, enum fc_fh_type type,
				    u32 f_ctl, u32 parm_offset)
{
	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);
}

/**
 * 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);
	__fc_fill_fc_hdr(fh, r_ctl, did, sid, type, f_ctl, 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,
					       enum fc_ct_fs_type fs_type,
					       u8 subtype)
{
	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 = fs_type;
	ct->hdr.ct_fs_subtype = subtype;
	ct->hdr.ct_cmd = htons((u16) op);
	return ct;
}

/**
 * fc_ct_ns_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_ns_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),
				    FC_FST_DIR, FC_NS_SUBTYPE);
		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),
				    FC_FST_DIR, FC_NS_SUBTYPE);
		ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
		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),
				    FC_FST_DIR, FC_NS_SUBTYPE);
		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),
				    FC_FST_DIR, FC_NS_SUBTYPE);
		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),
				    FC_FST_DIR, FC_NS_SUBTYPE);
		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,
				    FC_FST_DIR, FC_NS_SUBTYPE);
		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,
				    FC_FST_DIR, FC_NS_SUBTYPE);
		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_ct_fill() - Fill in a common transport 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, u32 *did)
{
	int rc = -EINVAL;

	switch (fc_id) {
	case FC_FID_DIR_SERV:
	default:
		rc = fc_ct_ns_fill(lport, fc_id, fp, op, r_ctl, fh_type);
		*did = FC_FID_DIR_SERV;
		break;
	}

	return rc;
}
/**
 * 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
059f04d4 BPG	49	static inline void __fc_fill_fc_hdr(struct fc_frame_header *fh,
	50	enum fc_rctl r_ctl,
	51	u32 did, u32 sid, enum fc_fh_type type,
	52	u32 f_ctl, u32 parm_offset)
42e9a92f	53	{
42e9a92f RL	54	WARN_ON(r_ctl == 0);
	55	fh->fh_r_ctl = r_ctl;
	56	hton24(fh->fh_d_id, did);
	57	hton24(fh->fh_s_id, sid);
	58	fh->fh_type = type;
	59	hton24(fh->fh_f_ctl, f_ctl);
	60	fh->fh_cs_ctl = 0;
	61	fh->fh_df_ctl = 0;
	62	fh->fh_parm_offset = htonl(parm_offset);
	63	}
	64
059f04d4 BPG	65	/**
	66	* fill FC header fields in specified fc_frame
	67	*/
	68	static inline void fc_fill_fc_hdr(struct fc_frame *fp, enum fc_rctl r_ctl,
	69	u32 did, u32 sid, enum fc_fh_type type,
	70	u32 f_ctl, u32 parm_offset)
	71	{
	72	struct fc_frame_header *fh;
	73
	74	fh = fc_frame_header_get(fp);
	75	__fc_fill_fc_hdr(fh, r_ctl, did, sid, type, f_ctl, parm_offset);
	76	}
	77
370c3bd0 JE	78	/**
	79	* fc_adisc_fill() - Fill in adisc request frame
	80	* @lport: local port.
	81	* @fp: fc frame where payload will be placed.
	82	*/
	83	static inline void fc_adisc_fill(struct fc_lport lport, struct fc_frame fp)
	84	{
	85	struct fc_els_adisc *adisc;
	86
	87	adisc = fc_frame_payload_get(fp, sizeof(*adisc));
	88	memset(adisc, 0, sizeof(*adisc));
	89	adisc->adisc_cmd = ELS_ADISC;
	90	put_unaligned_be64(lport->wwpn, &adisc->adisc_wwpn);
	91	put_unaligned_be64(lport->wwnn, &adisc->adisc_wwnn);
7b2787ec	92	hton24(adisc->adisc_port_id, lport->port_id);
370c3bd0 JE	93	}
370c3bd0 JE	94
42e9a92f RL	95	/**
	96	* fc_ct_hdr_fill- fills ct header and reset ct payload
	97	* returns pointer to ct request.
	98	*/
	99	static inline struct fc_ct_req fc_ct_hdr_fill(const struct fc_frame fp,
1ea2c1da NP	100	unsigned int op, size_t req_size,
	101	enum fc_ct_fs_type fs_type,
	102	u8 subtype)
42e9a92f RL	103	{
	104	struct fc_ct_req *ct;
	105	size_t ct_plen;
	106
	107	ct_plen = sizeof(struct fc_ct_hdr) + req_size;
	108	ct = fc_frame_payload_get(fp, ct_plen);
	109	memset(ct, 0, ct_plen);
	110	ct->hdr.ct_rev = FC_CT_REV;
1ea2c1da NP	111	ct->hdr.ct_fs_type = fs_type;
1ea2c1da NP	112	ct->hdr.ct_fs_subtype = subtype;
42e9a92f RL	113	ct->hdr.ct_cmd = htons((u16) op);
	114	return ct;
	115	}
	116
	117	/**
1ea2c1da	118	* fc_ct_ns_fill() - Fill in a name service request frame
2ab7e1ec JE	119	* @lport: local port.
	120	* @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
	121	* @fp: frame to contain payload.
	122	* @op: CT opcode.
	123	* @r_ctl: pointer to FC header R_CTL.
	124	* @fh_type: pointer to FC-4 type.
42e9a92f	125	*/
1ea2c1da	126	static inline int fc_ct_ns_fill(struct fc_lport *lport,
2ab7e1ec	127	u32 fc_id, struct fc_frame *fp,
a46f327a	128	unsigned int op, enum fc_rctl *r_ctl,
42e9a92f RL	129	enum fc_fh_type *fh_type)
	130	{
	131	struct fc_ct_req *ct;
5f9a056d	132	size_t len;
42e9a92f RL	133
	134	switch (op) {
	135	case FC_NS_GPN_FT:
1ea2c1da NP	136	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_gid_ft),
1ea2c1da NP	137	FC_FST_DIR, FC_NS_SUBTYPE);
42e9a92f RL	138	ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
	139	break;
	140
2ab7e1ec	141	case FC_NS_GPN_ID:
1ea2c1da NP	142	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_fid),
	143	FC_FST_DIR, FC_NS_SUBTYPE);
	144	ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
2ab7e1ec JE	145	hton24(ct->payload.fid.fp_fid, fc_id);
	146	break;
	147
42e9a92f	148	case FC_NS_RFT_ID:
1ea2c1da NP	149	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rft),
1ea2c1da NP	150	FC_FST_DIR, FC_NS_SUBTYPE);
7b2787ec	151	hton24(ct->payload.rft.fid.fp_fid, lport->port_id);
42e9a92f RL	152	ct->payload.rft.fts = lport->fcts;
	153	break;
	154
ab593b18	155	case FC_NS_RFF_ID:
1ea2c1da NP	156	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id),
1ea2c1da NP	157	FC_FST_DIR, FC_NS_SUBTYPE);
7b2787ec	158	hton24(ct->payload.rff.fr_fid.fp_fid, lport->port_id);
ab593b18 JE	159	ct->payload.rff.fr_type = FC_TYPE_FCP;
	160	if (lport->service_params & FCP_SPPF_INIT_FCN)
	161	ct->payload.rff.fr_feat = FCP_FEAT_INIT;
	162	if (lport->service_params & FCP_SPPF_TARG_FCN)
	163	ct->payload.rff.fr_feat \|= FCP_FEAT_TARG;
	164	break;
	165
c9c7bd7a	166	case FC_NS_RNN_ID:
1ea2c1da NP	167	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id),
1ea2c1da NP	168	FC_FST_DIR, FC_NS_SUBTYPE);
7b2787ec	169	hton24(ct->payload.rn.fr_fid.fp_fid, lport->port_id);
c9c7bd7a	170	put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
42e9a92f RL	171	break;
42e9a92f RL	172
c9866a54	173	case FC_NS_RSPN_ID:
5f9a056d	174	len = strnlen(fc_host_symbolic_name(lport->host), 255);
1ea2c1da NP	175	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len,
1ea2c1da NP	176	FC_FST_DIR, FC_NS_SUBTYPE);
7b2787ec	177	hton24(ct->payload.spn.fr_fid.fp_fid, lport->port_id);
c9866a54	178	strncpy(ct->payload.spn.fr_name,
5f9a056d JE	179	fc_host_symbolic_name(lport->host), len);
5f9a056d JE	180	ct->payload.spn.fr_name_len = len;
c9866a54 CL	181	break;
c9866a54 CL	182
5baa17c3	183	case FC_NS_RSNN_NN:
5f9a056d	184	len = strnlen(fc_host_symbolic_name(lport->host), 255);
1ea2c1da NP	185	ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len,
1ea2c1da NP	186	FC_FST_DIR, FC_NS_SUBTYPE);
5baa17c3 CL	187	put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
5baa17c3 CL	188	strncpy(ct->payload.snn.fr_name,
5f9a056d JE	189	fc_host_symbolic_name(lport->host), len);
5f9a056d JE	190	ct->payload.snn.fr_name_len = len;
5baa17c3 CL	191	break;
5baa17c3 CL	192
42e9a92f	193	default:
42e9a92f RL	194	return -EINVAL;
	195	}
	196	*r_ctl = FC_RCTL_DD_UNSOL_CTL;
42e9a92f RL	197	*fh_type = FC_TYPE_CT;
	198	return 0;
	199	}
	200
1ea2c1da NP	201	/**
	202	* fc_ct_fill() - Fill in a common transport service request frame
	203	* @lport: local port.
	204	* @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
	205	* @fp: frame to contain payload.
	206	* @op: CT opcode.
	207	* @r_ctl: pointer to FC header R_CTL.
	208	* @fh_type: pointer to FC-4 type.
	209	*/
	210	static inline int fc_ct_fill(struct fc_lport *lport,
	211	u32 fc_id, struct fc_frame *fp,
	212	unsigned int op, enum fc_rctl *r_ctl,
	213	enum fc_fh_type fh_type, u32 did)
	214	{
	215	int rc = -EINVAL;
	216
	217	switch (fc_id) {
	218	case FC_FID_DIR_SERV:
	219	default:
	220	rc = fc_ct_ns_fill(lport, fc_id, fp, op, r_ctl, fh_type);
	221	*did = FC_FID_DIR_SERV;
	222	break;
	223	}
	224
	225	return rc;
	226	}
42e9a92f RL	227	/**
	228	* fc_plogi_fill - Fill in plogi request frame
	229	*/
	230	static inline void fc_plogi_fill(struct fc_lport lport, struct fc_frame fp,
	231	unsigned int op)
	232	{
	233	struct fc_els_flogi *plogi;
	234	struct fc_els_csp *csp;
	235	struct fc_els_cssp *cp;
	236
	237	plogi = fc_frame_payload_get(fp, sizeof(*plogi));
	238	memset(plogi, 0, sizeof(*plogi));
	239	plogi->fl_cmd = (u8) op;
	240	put_unaligned_be64(lport->wwpn, &plogi->fl_wwpn);
	241	put_unaligned_be64(lport->wwnn, &plogi->fl_wwnn);
	242
	243	csp = &plogi->fl_csp;
	244	csp->sp_hi_ver = 0x20;
	245	csp->sp_lo_ver = 0x20;
	246	csp->sp_bb_cred = htons(10); /* this gets set by gateway */
	247	csp->sp_bb_data = htons((u16) lport->mfs);
	248	cp = &plogi->fl_cssp[3 - 1]; /* class 3 parameters */
	249	cp->cp_class = htons(FC_CPC_VALID \| FC_CPC_SEQ);
	250	csp->sp_features = htons(FC_SP_FT_CIRO);
	251	csp->sp_tot_seq = htons(255); /* seq. we accept */
	252	csp->sp_rel_off = htons(0x1f);
	253	csp->sp_e_d_tov = htonl(lport->e_d_tov);
	254
	255	cp->cp_rdfs = htons((u16) lport->mfs);
	256	cp->cp_con_seq = htons(255);
	257	cp->cp_open_seq = 1;
	258	}
	259
	260	/**
	261	* fc_flogi_fill - Fill in a flogi request frame.
	262	*/
	263	static inline void fc_flogi_fill(struct fc_lport lport, struct fc_frame fp)
	264	{
	265	struct fc_els_csp *sp;
	266	struct fc_els_cssp *cp;
	267	struct fc_els_flogi *flogi;
	268
	269	flogi = fc_frame_payload_get(fp, sizeof(*flogi));
	270	memset(flogi, 0, sizeof(*flogi));
	271	flogi->fl_cmd = (u8) ELS_FLOGI;
	272	put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn);
	273	put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn);
	274	sp = &flogi->fl_csp;
	275	sp->sp_hi_ver = 0x20;
	276	sp->sp_lo_ver = 0x20;
	277	sp->sp_bb_cred = htons(10); /* this gets set by gateway */
	278	sp->sp_bb_data = htons((u16) lport->mfs);
	279	cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */
	280	cp->cp_class = htons(FC_CPC_VALID \| FC_CPC_SEQ);
db36c06c CL	281	if (lport->does_npiv)
	282	sp->sp_features = htons(FC_SP_FT_NPIV);
	283	}
	284
	285	/**
	286	* fc_fdisc_fill - Fill in a fdisc request frame.
	287	*/
	288	static inline void fc_fdisc_fill(struct fc_lport lport, struct fc_frame fp)
	289	{
	290	struct fc_els_csp *sp;
	291	struct fc_els_cssp *cp;
	292	struct fc_els_flogi *fdisc;
	293
	294	fdisc = fc_frame_payload_get(fp, sizeof(*fdisc));
	295	memset(fdisc, 0, sizeof(*fdisc));
	296	fdisc->fl_cmd = (u8) ELS_FDISC;
	297	put_unaligned_be64(lport->wwpn, &fdisc->fl_wwpn);
	298	put_unaligned_be64(lport->wwnn, &fdisc->fl_wwnn);
	299	sp = &fdisc->fl_csp;
	300	sp->sp_hi_ver = 0x20;
	301	sp->sp_lo_ver = 0x20;
	302	sp->sp_bb_cred = htons(10); /* this gets set by gateway */
	303	sp->sp_bb_data = htons((u16) lport->mfs);
	304	cp = &fdisc->fl_cssp[3 - 1]; /* class 3 parameters */
	305	cp->cp_class = htons(FC_CPC_VALID \| FC_CPC_SEQ);
42e9a92f RL	306	}
	307
	308	/**
	309	* fc_logo_fill - Fill in a logo request frame.
	310	*/
	311	static inline void fc_logo_fill(struct fc_lport lport, struct fc_frame fp)
	312	{
	313	struct fc_els_logo *logo;
	314
	315	logo = fc_frame_payload_get(fp, sizeof(*logo));
	316	memset(logo, 0, sizeof(*logo));
	317	logo->fl_cmd = ELS_LOGO;
7b2787ec	318	hton24(logo->fl_n_port_id, lport->port_id);
42e9a92f RL	319	logo->fl_n_port_wwn = htonll(lport->wwpn);
	320	}
	321
	322	/**
	323	* fc_rtv_fill - Fill in RTV (read timeout value) request frame.
	324	*/
	325	static inline void fc_rtv_fill(struct fc_lport lport, struct fc_frame fp)
	326	{
	327	struct fc_els_rtv *rtv;
	328
	329	rtv = fc_frame_payload_get(fp, sizeof(*rtv));
	330	memset(rtv, 0, sizeof(*rtv));
	331	rtv->rtv_cmd = ELS_RTV;
	332	}
	333
	334	/**
	335	* fc_rec_fill - Fill in rec request frame
	336	*/
	337	static inline void fc_rec_fill(struct fc_lport lport, struct fc_frame fp)
	338	{
	339	struct fc_els_rec *rec;
	340	struct fc_exch *ep = fc_seq_exch(fr_seq(fp));
	341
	342	rec = fc_frame_payload_get(fp, sizeof(*rec));
	343	memset(rec, 0, sizeof(*rec));
	344	rec->rec_cmd = ELS_REC;
7b2787ec	345	hton24(rec->rec_s_id, lport->port_id);
42e9a92f RL	346	rec->rec_ox_id = htons(ep->oxid);
	347	rec->rec_rx_id = htons(ep->rxid);
	348	}
	349
	350	/**
	351	* fc_prli_fill - Fill in prli request frame
	352	*/
	353	static inline void fc_prli_fill(struct fc_lport lport, struct fc_frame fp)
	354	{
	355	struct {
	356	struct fc_els_prli prli;
	357	struct fc_els_spp spp;
	358	} *pp;
	359
	360	pp = fc_frame_payload_get(fp, sizeof(*pp));
	361	memset(pp, 0, sizeof(*pp));
	362	pp->prli.prli_cmd = ELS_PRLI;
	363	pp->prli.prli_spp_len = sizeof(struct fc_els_spp);
	364	pp->prli.prli_len = htons(sizeof(*pp));
	365	pp->spp.spp_type = FC_TYPE_FCP;
	366	pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR;
	367	pp->spp.spp_params = htonl(lport->service_params);
	368	}
	369
	370	/**
	371	* fc_scr_fill - Fill in a scr request frame.
	372	*/
	373	static inline void fc_scr_fill(struct fc_lport lport, struct fc_frame fp)
	374	{
	375	struct fc_els_scr *scr;
	376
	377	scr = fc_frame_payload_get(fp, sizeof(*scr));
	378	memset(scr, 0, sizeof(*scr));
	379	scr->scr_cmd = ELS_SCR;
	380	scr->scr_reg_func = ELS_SCRF_FULL;
	381	}
	382
	383	/**
	384	* fc_els_fill - Fill in an ELS request frame
	385	*/
9fb9d328	386	static inline int fc_els_fill(struct fc_lport *lport,
a46f327a	387	u32 did,
42e9a92f	388	struct fc_frame *fp, unsigned int op,
a46f327a	389	enum fc_rctl r_ctl, enum fc_fh_type fh_type)
42e9a92f RL	390	{
42e9a92f RL	391	switch (op) {
370c3bd0 JE	392	case ELS_ADISC:
	393	fc_adisc_fill(lport, fp);
	394	break;
	395
42e9a92f RL	396	case ELS_PLOGI:
42e9a92f RL	397	fc_plogi_fill(lport, fp, ELS_PLOGI);
42e9a92f RL	398	break;
	399
	400	case ELS_FLOGI:
	401	fc_flogi_fill(lport, fp);
42e9a92f RL	402	break;
42e9a92f RL	403
db36c06c CL	404	case ELS_FDISC:
	405	fc_fdisc_fill(lport, fp);
	406	break;
	407
42e9a92f RL	408	case ELS_LOGO:
42e9a92f RL	409	fc_logo_fill(lport, fp);
42e9a92f RL	410	break;
	411
	412	case ELS_RTV:
	413	fc_rtv_fill(lport, fp);
42e9a92f RL	414	break;
	415
	416	case ELS_REC:
	417	fc_rec_fill(lport, fp);
42e9a92f RL	418	break;
	419
	420	case ELS_PRLI:
	421	fc_prli_fill(lport, fp);
42e9a92f RL	422	break;
	423
	424	case ELS_SCR:
	425	fc_scr_fill(lport, fp);
42e9a92f RL	426	break;
	427
	428	default:
42e9a92f RL	429	return -EINVAL;
	430	}
	431
	432	*r_ctl = FC_RCTL_ELS_REQ;
	433	*fh_type = FC_TYPE_ELS;
	434	return 0;
	435	}
	436	#endif /* _FC_ENCODE_H_ */