/* SPDX-License-Identifier: GPL-2.0-only *//* * Copyright(c) 2008 Intel Corporation. All rights reserved. * * Maintained at www.Open-FCoE.org */ #ifndef _FC_ENCODE_H_#define _FC_ENCODE_H_#include <asm/unaligned.h>#include <linux/utsname.h>#include <scsi/fc/fc_ms.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;		struct fc_fdmi_rhba rhba;		struct fc_fdmi_rpa  rpa;		struct fc_fdmi_dprt dprt;		struct fc_fdmi_dhba dhba;	} payload;}; /** * 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;} static inline void fc_ct_ms_fill_attr(struct fc_fdmi_attr_entry *entry,				    const char *in, size_t len){	int copied = strscpy(entry->value, in, len);	if (copied > 0)		memset(entry->value, copied, len - copied);} /** * fc_ct_ms_fill() - Fill in a mgmt 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_ms_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;	struct fc_fdmi_attr_entry *entry;	struct fs_fdmi_attrs *hba_attrs;	int numattrs = 0; 	switch (op) {	case FC_FDMI_RHBA:		numattrs = 10;		len = sizeof(struct fc_fdmi_rhba);		len -= sizeof(struct fc_fdmi_attr_entry);		len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);		len += FC_FDMI_HBA_ATTR_NODENAME_LEN;		len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;		len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;		len += FC_FDMI_HBA_ATTR_MODEL_LEN;		len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;		len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;		len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;		len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;		len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;		len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;		ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,				    FC_FDMI_SUBTYPE); 		/* HBA Identifier */		put_unaligned_be64(lport->wwpn, &ct->payload.rhba.hbaid.id);		/* Number of Ports - always 1 */		put_unaligned_be32(1, &ct->payload.rhba.port.numport);		/* Port Name */		put_unaligned_be64(lport->wwpn,				   &ct->payload.rhba.port.port[0].portname); 		/* HBA Attributes */		put_unaligned_be32(numattrs,				   &ct->payload.rhba.hba_attrs.numattrs);		hba_attrs = &ct->payload.rhba.hba_attrs;		entry = (struct fc_fdmi_attr_entry *)hba_attrs->attr;		/* NodeName*/		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_HBA_ATTR_NODENAME_LEN;		put_unaligned_be16(FC_FDMI_HBA_ATTR_NODENAME,				   &entry->type);		put_unaligned_be16(len, &entry->len);		put_unaligned_be64(lport->wwnn,				   (__be64 *)&entry->value[0]); 		/* Manufacturer */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_HBA_ATTR_NODENAME_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;		put_unaligned_be16(FC_FDMI_HBA_ATTR_MANUFACTURER,				   &entry->type);		put_unaligned_be16(len, &entry->len);		fc_ct_ms_fill_attr(entry,			fc_host_manufacturer(lport->host),			FC_FDMI_HBA_ATTR_MANUFACTURER_LEN); 		/* SerialNumber */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_HBA_ATTR_MANUFACTURER_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;		put_unaligned_be16(FC_FDMI_HBA_ATTR_SERIALNUMBER,				   &entry->type);		put_unaligned_be16(len, &entry->len);		fc_ct_ms_fill_attr(entry,			fc_host_serial_number(lport->host),			FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN); 		/* Model */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_HBA_ATTR_MODEL_LEN;		put_unaligned_be16(FC_FDMI_HBA_ATTR_MODEL,				   &entry->type);		put_unaligned_be16(len, &entry->len);		fc_ct_ms_fill_attr(entry,			fc_host_model(lport->host),			FC_FDMI_HBA_ATTR_MODEL_LEN); 		/* Model Description */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_HBA_ATTR_MODEL_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;		put_unaligned_be16(FC_FDMI_HBA_ATTR_MODELDESCRIPTION,				   &entry->type);		put_unaligned_be16(len, &entry->len);		fc_ct_ms_fill_attr(entry,			fc_host_model_description(lport->host),			FC_FDMI_HBA_ATTR_MODELDESCR_LEN); 		/* Hardware Version */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_HBA_ATTR_MODELDESCR_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;		put_unaligned_be16(FC_FDMI_HBA_ATTR_HARDWAREVERSION,				   &entry->type);		put_unaligned_be16(len, &entry->len);		fc_ct_ms_fill_attr(entry,			fc_host_hardware_version(lport->host),			FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN); 		/* Driver Version */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;		put_unaligned_be16(FC_FDMI_HBA_ATTR_DRIVERVERSION,				   &entry->type);		put_unaligned_be16(len, &entry->len);		fc_ct_ms_fill_attr(entry,			fc_host_driver_version(lport->host),			FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN); 		/* OptionROM Version */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;		put_unaligned_be16(FC_FDMI_HBA_ATTR_OPTIONROMVERSION,				   &entry->type);		put_unaligned_be16(len, &entry->len);		fc_ct_ms_fill_attr(entry,			fc_host_optionrom_version(lport->host),			FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN); 		/* Firmware Version */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;		put_unaligned_be16(FC_FDMI_HBA_ATTR_FIRMWAREVERSION,				   &entry->type);		put_unaligned_be16(len, &entry->len);		fc_ct_ms_fill_attr(entry,			fc_host_firmware_version(lport->host),			FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN); 		/* OS Name and Version */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;		put_unaligned_be16(FC_FDMI_HBA_ATTR_OSNAMEVERSION,				   &entry->type);		put_unaligned_be16(len, &entry->len);		snprintf((char *)&entry->value,			FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN,			"%s v%s",			init_utsname()->sysname,			init_utsname()->release);		break;	case FC_FDMI_RPA:		numattrs = 6;		len = sizeof(struct fc_fdmi_rpa);		len -= sizeof(struct fc_fdmi_attr_entry);		len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);		len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;		len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;		len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;		len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;		len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;		len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;		ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,				    FC_FDMI_SUBTYPE); 		/* Port Name */		put_unaligned_be64(lport->wwpn,				   &ct->payload.rpa.port.portname); 		/* Port Attributes */		put_unaligned_be32(numattrs,				   &ct->payload.rpa.hba_attrs.numattrs); 		hba_attrs = &ct->payload.rpa.hba_attrs;		entry = (struct fc_fdmi_attr_entry *)hba_attrs->attr; 		/* FC4 types */		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;		put_unaligned_be16(FC_FDMI_PORT_ATTR_FC4TYPES,				   &entry->type);		put_unaligned_be16(len, &entry->len);		memcpy(&entry->value, fc_host_supported_fc4s(lport->host),		       FC_FDMI_PORT_ATTR_FC4TYPES_LEN); 		/* Supported Speed */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_PORT_ATTR_FC4TYPES_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;		put_unaligned_be16(FC_FDMI_PORT_ATTR_SUPPORTEDSPEED,				   &entry->type);		put_unaligned_be16(len, &entry->len); 		put_unaligned_be32(fc_host_supported_speeds(lport->host),				   &entry->value); 		/* Current Port Speed */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;		put_unaligned_be16(FC_FDMI_PORT_ATTR_CURRENTPORTSPEED,				   &entry->type);		put_unaligned_be16(len, &entry->len);		put_unaligned_be32(lport->link_speed,				   &entry->value); 		/* Max Frame Size */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;		put_unaligned_be16(FC_FDMI_PORT_ATTR_MAXFRAMESIZE,				   &entry->type);		put_unaligned_be16(len, &entry->len);		put_unaligned_be32(fc_host_maxframe_size(lport->host),				   &entry->value); 		/* OS Device Name */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;		put_unaligned_be16(FC_FDMI_PORT_ATTR_OSDEVICENAME,				   &entry->type);		put_unaligned_be16(len, &entry->len);		/* Use the sysfs device name */		fc_ct_ms_fill_attr(entry,			dev_name(&lport->host->shost_gendev),			strnlen(dev_name(&lport->host->shost_gendev),				FC_FDMI_PORT_ATTR_HOSTNAME_LEN)); 		/* Host Name */		entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +					FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN);		len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;		len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;		put_unaligned_be16(FC_FDMI_PORT_ATTR_HOSTNAME,				   &entry->type);		put_unaligned_be16(len, &entry->len);		if (strlen(fc_host_system_hostname(lport->host)))			fc_ct_ms_fill_attr(entry,				fc_host_system_hostname(lport->host),				strnlen(fc_host_system_hostname(lport->host),					FC_FDMI_PORT_ATTR_HOSTNAME_LEN));		else			fc_ct_ms_fill_attr(entry,				init_utsname()->nodename,				FC_FDMI_PORT_ATTR_HOSTNAME_LEN);		break;	case FC_FDMI_DPRT:		len = sizeof(struct fc_fdmi_dprt);		ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,				    FC_FDMI_SUBTYPE);		/* Port Name */		put_unaligned_be64(lport->wwpn,				   &ct->payload.dprt.port.portname);		break;	case FC_FDMI_DHBA:		len = sizeof(struct fc_fdmi_dhba);		ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,				    FC_FDMI_SUBTYPE);		/* HBA Identifier */		put_unaligned_be64(lport->wwpn, &ct->payload.dhba.hbaid.id);		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_MGMT_SERV:		rc = fc_ct_ms_fill(lport, fc_id, fp, op, r_ctl, fh_type);		*did = FC_FID_MGMT_SERV;		break;	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 */

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