| /* |
| * 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_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; |
| |
| 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_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)); |
| ct->payload.rft.fts = lport->fcts; |
| put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn); |
| break; |
| |
| case FC_NS_RSPN_ID: |
| ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn)); |
| 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), 255); |
| ct->payload.spn.fr_name_len = |
| strnlen(ct->payload.spn.fr_name, 255); |
| break; |
| |
| case FC_NS_RSNN_NN: |
| ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn)); |
| put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn); |
| strncpy(ct->payload.snn.fr_name, |
| fc_host_symbolic_name(lport->host), 255); |
| ct->payload.snn.fr_name_len = |
| strnlen(ct->payload.snn.fr_name, 255); |
| 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_ */ |