2 * Copyright(c) 2008 Intel Corporation. All rights reserved.
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.
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
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.
17 * Maintained at www.Open-FCoE.org
22 #include <asm/unaligned.h>
25 * F_CTL values for simple requests and responses.
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)
32 struct fc_ns_fid fid; /* port ID object */
33 struct fc_ns_fts fts; /* FC4-types object */
39 struct fc_ns_gid_ft gid;
40 struct fc_ns_rn_id rn;
42 struct fc_ns_rff_id rff;
44 struct fc_ns_rsnn snn;
45 struct fc_ns_rspn spn;
49 static inline void __fc_fill_fc_hdr(struct fc_frame_header *fh,
51 u32 did, u32 sid, enum fc_fh_type type,
52 u32 f_ctl, u32 parm_offset)
56 hton24(fh->fh_d_id, did);
57 hton24(fh->fh_s_id, sid);
59 hton24(fh->fh_f_ctl, f_ctl);
62 fh->fh_parm_offset = htonl(parm_offset);
66 * fill FC header fields in specified fc_frame
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)
72 struct fc_frame_header *fh;
74 fh = fc_frame_header_get(fp);
75 __fc_fill_fc_hdr(fh, r_ctl, did, sid, type, f_ctl, parm_offset);
79 * fc_adisc_fill() - Fill in adisc request frame
81 * @fp: fc frame where payload will be placed.
83 static inline void fc_adisc_fill(struct fc_lport *lport, struct fc_frame *fp)
85 struct fc_els_adisc *adisc;
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);
92 hton24(adisc->adisc_port_id, lport->port_id);
96 * fc_ct_hdr_fill- fills ct header and reset ct payload
97 * returns pointer to ct request.
99 static inline struct fc_ct_req *fc_ct_hdr_fill(const struct fc_frame *fp,
100 unsigned int op, size_t req_size)
102 struct fc_ct_req *ct;
105 ct_plen = sizeof(struct fc_ct_hdr) + req_size;
106 ct = fc_frame_payload_get(fp, ct_plen);
107 memset(ct, 0, ct_plen);
108 ct->hdr.ct_rev = FC_CT_REV;
109 ct->hdr.ct_fs_type = FC_FST_DIR;
110 ct->hdr.ct_fs_subtype = FC_NS_SUBTYPE;
111 ct->hdr.ct_cmd = htons((u16) op);
116 * fc_ct_fill() - Fill in a name service request frame
117 * @lport: local port.
118 * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
119 * @fp: frame to contain payload.
121 * @r_ctl: pointer to FC header R_CTL.
122 * @fh_type: pointer to FC-4 type.
124 static inline int fc_ct_fill(struct fc_lport *lport,
125 u32 fc_id, struct fc_frame *fp,
126 unsigned int op, enum fc_rctl *r_ctl,
127 enum fc_fh_type *fh_type)
129 struct fc_ct_req *ct;
134 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_gid_ft));
135 ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
139 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_fid));
140 hton24(ct->payload.fid.fp_fid, fc_id);
144 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rft));
145 hton24(ct->payload.rft.fid.fp_fid, lport->port_id);
146 ct->payload.rft.fts = lport->fcts;
150 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id));
151 hton24(ct->payload.rff.fr_fid.fp_fid, lport->port_id);
152 ct->payload.rff.fr_type = FC_TYPE_FCP;
153 if (lport->service_params & FCP_SPPF_INIT_FCN)
154 ct->payload.rff.fr_feat = FCP_FEAT_INIT;
155 if (lport->service_params & FCP_SPPF_TARG_FCN)
156 ct->payload.rff.fr_feat |= FCP_FEAT_TARG;
160 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id));
161 hton24(ct->payload.rn.fr_fid.fp_fid, lport->port_id);
162 put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
166 len = strnlen(fc_host_symbolic_name(lport->host), 255);
167 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len);
168 hton24(ct->payload.spn.fr_fid.fp_fid, lport->port_id);
169 strncpy(ct->payload.spn.fr_name,
170 fc_host_symbolic_name(lport->host), len);
171 ct->payload.spn.fr_name_len = len;
175 len = strnlen(fc_host_symbolic_name(lport->host), 255);
176 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len);
177 put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
178 strncpy(ct->payload.snn.fr_name,
179 fc_host_symbolic_name(lport->host), len);
180 ct->payload.snn.fr_name_len = len;
186 *r_ctl = FC_RCTL_DD_UNSOL_CTL;
187 *fh_type = FC_TYPE_CT;
192 * fc_plogi_fill - Fill in plogi request frame
194 static inline void fc_plogi_fill(struct fc_lport *lport, struct fc_frame *fp,
197 struct fc_els_flogi *plogi;
198 struct fc_els_csp *csp;
199 struct fc_els_cssp *cp;
201 plogi = fc_frame_payload_get(fp, sizeof(*plogi));
202 memset(plogi, 0, sizeof(*plogi));
203 plogi->fl_cmd = (u8) op;
204 put_unaligned_be64(lport->wwpn, &plogi->fl_wwpn);
205 put_unaligned_be64(lport->wwnn, &plogi->fl_wwnn);
207 csp = &plogi->fl_csp;
208 csp->sp_hi_ver = 0x20;
209 csp->sp_lo_ver = 0x20;
210 csp->sp_bb_cred = htons(10); /* this gets set by gateway */
211 csp->sp_bb_data = htons((u16) lport->mfs);
212 cp = &plogi->fl_cssp[3 - 1]; /* class 3 parameters */
213 cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
214 csp->sp_features = htons(FC_SP_FT_CIRO);
215 csp->sp_tot_seq = htons(255); /* seq. we accept */
216 csp->sp_rel_off = htons(0x1f);
217 csp->sp_e_d_tov = htonl(lport->e_d_tov);
219 cp->cp_rdfs = htons((u16) lport->mfs);
220 cp->cp_con_seq = htons(255);
225 * fc_flogi_fill - Fill in a flogi request frame.
227 static inline void fc_flogi_fill(struct fc_lport *lport, struct fc_frame *fp)
229 struct fc_els_csp *sp;
230 struct fc_els_cssp *cp;
231 struct fc_els_flogi *flogi;
233 flogi = fc_frame_payload_get(fp, sizeof(*flogi));
234 memset(flogi, 0, sizeof(*flogi));
235 flogi->fl_cmd = (u8) ELS_FLOGI;
236 put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn);
237 put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn);
239 sp->sp_hi_ver = 0x20;
240 sp->sp_lo_ver = 0x20;
241 sp->sp_bb_cred = htons(10); /* this gets set by gateway */
242 sp->sp_bb_data = htons((u16) lport->mfs);
243 cp = &flogi->fl_cssp[3 - 1]; /* class 3 parameters */
244 cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
245 if (lport->does_npiv)
246 sp->sp_features = htons(FC_SP_FT_NPIV);
250 * fc_fdisc_fill - Fill in a fdisc request frame.
252 static inline void fc_fdisc_fill(struct fc_lport *lport, struct fc_frame *fp)
254 struct fc_els_csp *sp;
255 struct fc_els_cssp *cp;
256 struct fc_els_flogi *fdisc;
258 fdisc = fc_frame_payload_get(fp, sizeof(*fdisc));
259 memset(fdisc, 0, sizeof(*fdisc));
260 fdisc->fl_cmd = (u8) ELS_FDISC;
261 put_unaligned_be64(lport->wwpn, &fdisc->fl_wwpn);
262 put_unaligned_be64(lport->wwnn, &fdisc->fl_wwnn);
264 sp->sp_hi_ver = 0x20;
265 sp->sp_lo_ver = 0x20;
266 sp->sp_bb_cred = htons(10); /* this gets set by gateway */
267 sp->sp_bb_data = htons((u16) lport->mfs);
268 cp = &fdisc->fl_cssp[3 - 1]; /* class 3 parameters */
269 cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
273 * fc_logo_fill - Fill in a logo request frame.
275 static inline void fc_logo_fill(struct fc_lport *lport, struct fc_frame *fp)
277 struct fc_els_logo *logo;
279 logo = fc_frame_payload_get(fp, sizeof(*logo));
280 memset(logo, 0, sizeof(*logo));
281 logo->fl_cmd = ELS_LOGO;
282 hton24(logo->fl_n_port_id, lport->port_id);
283 logo->fl_n_port_wwn = htonll(lport->wwpn);
287 * fc_rtv_fill - Fill in RTV (read timeout value) request frame.
289 static inline void fc_rtv_fill(struct fc_lport *lport, struct fc_frame *fp)
291 struct fc_els_rtv *rtv;
293 rtv = fc_frame_payload_get(fp, sizeof(*rtv));
294 memset(rtv, 0, sizeof(*rtv));
295 rtv->rtv_cmd = ELS_RTV;
299 * fc_rec_fill - Fill in rec request frame
301 static inline void fc_rec_fill(struct fc_lport *lport, struct fc_frame *fp)
303 struct fc_els_rec *rec;
304 struct fc_exch *ep = fc_seq_exch(fr_seq(fp));
306 rec = fc_frame_payload_get(fp, sizeof(*rec));
307 memset(rec, 0, sizeof(*rec));
308 rec->rec_cmd = ELS_REC;
309 hton24(rec->rec_s_id, lport->port_id);
310 rec->rec_ox_id = htons(ep->oxid);
311 rec->rec_rx_id = htons(ep->rxid);
315 * fc_prli_fill - Fill in prli request frame
317 static inline void fc_prli_fill(struct fc_lport *lport, struct fc_frame *fp)
320 struct fc_els_prli prli;
321 struct fc_els_spp spp;
324 pp = fc_frame_payload_get(fp, sizeof(*pp));
325 memset(pp, 0, sizeof(*pp));
326 pp->prli.prli_cmd = ELS_PRLI;
327 pp->prli.prli_spp_len = sizeof(struct fc_els_spp);
328 pp->prli.prli_len = htons(sizeof(*pp));
329 pp->spp.spp_type = FC_TYPE_FCP;
330 pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR;
331 pp->spp.spp_params = htonl(lport->service_params);
335 * fc_scr_fill - Fill in a scr request frame.
337 static inline void fc_scr_fill(struct fc_lport *lport, struct fc_frame *fp)
339 struct fc_els_scr *scr;
341 scr = fc_frame_payload_get(fp, sizeof(*scr));
342 memset(scr, 0, sizeof(*scr));
343 scr->scr_cmd = ELS_SCR;
344 scr->scr_reg_func = ELS_SCRF_FULL;
348 * fc_els_fill - Fill in an ELS request frame
350 static inline int fc_els_fill(struct fc_lport *lport,
352 struct fc_frame *fp, unsigned int op,
353 enum fc_rctl *r_ctl, enum fc_fh_type *fh_type)
357 fc_adisc_fill(lport, fp);
361 fc_plogi_fill(lport, fp, ELS_PLOGI);
365 fc_flogi_fill(lport, fp);
369 fc_fdisc_fill(lport, fp);
373 fc_logo_fill(lport, fp);
377 fc_rtv_fill(lport, fp);
381 fc_rec_fill(lport, fp);
385 fc_prli_fill(lport, fp);
389 fc_scr_fill(lport, fp);
396 *r_ctl = FC_RCTL_ELS_REQ;
397 *fh_type = FC_TYPE_ELS;
400 #endif /* _FC_ENCODE_H_ */