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;
50 * fill FC header fields in specified fc_frame
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)
56 struct fc_frame_header *fh;
58 fh = fc_frame_header_get(fp);
61 hton24(fh->fh_d_id, did);
62 hton24(fh->fh_s_id, sid);
64 hton24(fh->fh_f_ctl, f_ctl);
67 fh->fh_parm_offset = htonl(parm_offset);
71 * fc_adisc_fill() - Fill in adisc request frame
73 * @fp: fc frame where payload will be placed.
75 static inline void fc_adisc_fill(struct fc_lport *lport, struct fc_frame *fp)
77 struct fc_els_adisc *adisc;
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);
84 hton24(adisc->adisc_port_id, lport->port_id);
88 * fc_ct_hdr_fill- fills ct header and reset ct payload
89 * returns pointer to ct request.
91 static inline struct fc_ct_req *fc_ct_hdr_fill(const struct fc_frame *fp,
92 unsigned int op, size_t req_size)
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);
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.
113 * @r_ctl: pointer to FC header R_CTL.
114 * @fh_type: pointer to FC-4 type.
116 static inline int fc_ct_fill(struct fc_lport *lport,
117 u32 fc_id, struct fc_frame *fp,
118 unsigned int op, enum fc_rctl *r_ctl,
119 enum fc_fh_type *fh_type)
121 struct fc_ct_req *ct;
126 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_gid_ft));
127 ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
131 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_fid));
132 hton24(ct->payload.fid.fp_fid, fc_id);
136 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rft));
137 hton24(ct->payload.rft.fid.fp_fid, lport->port_id);
138 ct->payload.rft.fts = lport->fcts;
142 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id));
143 hton24(ct->payload.rff.fr_fid.fp_fid, lport->port_id);
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;
152 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id));
153 hton24(ct->payload.rn.fr_fid.fp_fid, lport->port_id);
154 put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
158 len = strnlen(fc_host_symbolic_name(lport->host), 255);
159 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len);
160 hton24(ct->payload.spn.fr_fid.fp_fid, lport->port_id);
161 strncpy(ct->payload.spn.fr_name,
162 fc_host_symbolic_name(lport->host), len);
163 ct->payload.spn.fr_name_len = len;
167 len = strnlen(fc_host_symbolic_name(lport->host), 255);
168 ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len);
169 put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
170 strncpy(ct->payload.snn.fr_name,
171 fc_host_symbolic_name(lport->host), len);
172 ct->payload.snn.fr_name_len = len;
178 *r_ctl = FC_RCTL_DD_UNSOL_CTL;
179 *fh_type = FC_TYPE_CT;
184 * fc_plogi_fill - Fill in plogi request frame
186 static inline void fc_plogi_fill(struct fc_lport *lport, struct fc_frame *fp,
189 struct fc_els_flogi *plogi;
190 struct fc_els_csp *csp;
191 struct fc_els_cssp *cp;
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);
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);
211 cp->cp_rdfs = htons((u16) lport->mfs);
212 cp->cp_con_seq = htons(255);
217 * fc_flogi_fill - Fill in a flogi request frame.
219 static inline void fc_flogi_fill(struct fc_lport *lport, struct fc_frame *fp)
221 struct fc_els_csp *sp;
222 struct fc_els_cssp *cp;
223 struct fc_els_flogi *flogi;
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);
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);
237 if (lport->does_npiv)
238 sp->sp_features = htons(FC_SP_FT_NPIV);
242 * fc_fdisc_fill - Fill in a fdisc request frame.
244 static inline void fc_fdisc_fill(struct fc_lport *lport, struct fc_frame *fp)
246 struct fc_els_csp *sp;
247 struct fc_els_cssp *cp;
248 struct fc_els_flogi *fdisc;
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);
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);
265 * fc_logo_fill - Fill in a logo request frame.
267 static inline void fc_logo_fill(struct fc_lport *lport, struct fc_frame *fp)
269 struct fc_els_logo *logo;
271 logo = fc_frame_payload_get(fp, sizeof(*logo));
272 memset(logo, 0, sizeof(*logo));
273 logo->fl_cmd = ELS_LOGO;
274 hton24(logo->fl_n_port_id, lport->port_id);
275 logo->fl_n_port_wwn = htonll(lport->wwpn);
279 * fc_rtv_fill - Fill in RTV (read timeout value) request frame.
281 static inline void fc_rtv_fill(struct fc_lport *lport, struct fc_frame *fp)
283 struct fc_els_rtv *rtv;
285 rtv = fc_frame_payload_get(fp, sizeof(*rtv));
286 memset(rtv, 0, sizeof(*rtv));
287 rtv->rtv_cmd = ELS_RTV;
291 * fc_rec_fill - Fill in rec request frame
293 static inline void fc_rec_fill(struct fc_lport *lport, struct fc_frame *fp)
295 struct fc_els_rec *rec;
296 struct fc_exch *ep = fc_seq_exch(fr_seq(fp));
298 rec = fc_frame_payload_get(fp, sizeof(*rec));
299 memset(rec, 0, sizeof(*rec));
300 rec->rec_cmd = ELS_REC;
301 hton24(rec->rec_s_id, lport->port_id);
302 rec->rec_ox_id = htons(ep->oxid);
303 rec->rec_rx_id = htons(ep->rxid);
307 * fc_prli_fill - Fill in prli request frame
309 static inline void fc_prli_fill(struct fc_lport *lport, struct fc_frame *fp)
312 struct fc_els_prli prli;
313 struct fc_els_spp spp;
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);
327 * fc_scr_fill - Fill in a scr request frame.
329 static inline void fc_scr_fill(struct fc_lport *lport, struct fc_frame *fp)
331 struct fc_els_scr *scr;
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;
340 * fc_els_fill - Fill in an ELS request frame
342 static inline int fc_els_fill(struct fc_lport *lport,
344 struct fc_frame *fp, unsigned int op,
345 enum fc_rctl *r_ctl, enum fc_fh_type *fh_type)
349 fc_adisc_fill(lport, fp);
353 fc_plogi_fill(lport, fp, ELS_PLOGI);
357 fc_flogi_fill(lport, fp);
361 fc_fdisc_fill(lport, fp);
365 fc_logo_fill(lport, fp);
369 fc_rtv_fill(lport, fp);
373 fc_rec_fill(lport, fp);
377 fc_prli_fill(lport, fp);
381 fc_scr_fill(lport, fp);
388 *r_ctl = FC_RCTL_ELS_REQ;
389 *fh_type = FC_TYPE_ELS;
392 #endif /* _FC_ENCODE_H_ */