/* * 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_ */