128 lines · c
1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright(c) 2009 Intel Corporation. All rights reserved.4 *5 * Maintained at www.Open-FCoE.org6 */7 8#ifndef _FC_LIBFC_H_9#define _FC_LIBFC_H_10 11#define FC_LIBFC_LOGGING 0x01 /* General logging, not categorized */12#define FC_LPORT_LOGGING 0x02 /* lport layer logging */13#define FC_DISC_LOGGING 0x04 /* discovery layer logging */14#define FC_RPORT_LOGGING 0x08 /* rport layer logging */15#define FC_FCP_LOGGING 0x10 /* I/O path logging */16#define FC_EM_LOGGING 0x20 /* Exchange Manager logging */17#define FC_EXCH_LOGGING 0x40 /* Exchange/Sequence logging */18#define FC_SCSI_LOGGING 0x80 /* SCSI logging (mostly error handling) */19 20extern unsigned int fc_debug_logging;21 22#define FC_CHECK_LOGGING(LEVEL, CMD) \23 do { \24 if (unlikely(fc_debug_logging & LEVEL)) \25 do { \26 CMD; \27 } while (0); \28 } while (0)29 30#define FC_LIBFC_DBG(fmt, args...) \31 FC_CHECK_LOGGING(FC_LIBFC_LOGGING, \32 pr_info("libfc: " fmt, ##args))33 34#define FC_LPORT_DBG(lport, fmt, args...) \35 FC_CHECK_LOGGING(FC_LPORT_LOGGING, \36 pr_info("host%u: lport %6.6x: " fmt, \37 (lport)->host->host_no, \38 (lport)->port_id, ##args))39 40#define FC_DISC_DBG(disc, fmt, args...) \41 FC_CHECK_LOGGING(FC_DISC_LOGGING, \42 pr_info("host%u: disc: " fmt, \43 fc_disc_lport(disc)->host->host_no, \44 ##args))45 46#define FC_RPORT_ID_DBG(lport, port_id, fmt, args...) \47 FC_CHECK_LOGGING(FC_RPORT_LOGGING, \48 pr_info("host%u: rport %6.6x: " fmt, \49 (lport)->host->host_no, \50 (port_id), ##args))51 52#define FC_RPORT_DBG(rdata, fmt, args...) \53 FC_RPORT_ID_DBG((rdata)->local_port, (rdata)->ids.port_id, fmt, ##args)54 55#define FC_FCP_DBG(pkt, fmt, args...) \56 FC_CHECK_LOGGING(FC_FCP_LOGGING, \57 { \58 if ((pkt)->seq_ptr) { \59 struct fc_exch *_ep = NULL; \60 _ep = fc_seq_exch((pkt)->seq_ptr); \61 pr_info("host%u: fcp: %6.6x: " \62 "xid %04x-%04x: " fmt, \63 (pkt)->lp->host->host_no, \64 (pkt)->rport->port_id, \65 (_ep)->oxid, (_ep)->rxid, ##args); \66 } else { \67 pr_info("host%u: fcp: %6.6x: " fmt, \68 (pkt)->lp->host->host_no, \69 (pkt)->rport->port_id, ##args); \70 } \71 })72 73#define FC_EXCH_DBG(exch, fmt, args...) \74 FC_CHECK_LOGGING(FC_EXCH_LOGGING, \75 pr_info("host%u: xid %4x: " fmt, \76 (exch)->lp->host->host_no, \77 exch->xid, ##args))78 79#define FC_SCSI_DBG(lport, fmt, args...) \80 FC_CHECK_LOGGING(FC_SCSI_LOGGING, \81 pr_info("host%u: scsi: " fmt, \82 (lport)->host->host_no, ##args))83 84/*85 * FC-4 Providers.86 */87extern struct fc4_prov *fc_active_prov[]; /* providers without recv */88extern struct fc4_prov *fc_passive_prov[]; /* providers with recv */89extern struct mutex fc_prov_mutex; /* lock over table changes */90 91extern struct fc4_prov fc_rport_t0_prov; /* type 0 provider */92extern struct fc4_prov fc_lport_els_prov; /* ELS provider */93extern struct fc4_prov fc_rport_fcp_init; /* FCP initiator provider */94 95/*96 * Set up direct-data placement for this I/O request97 */98void fc_fcp_ddp_setup(struct fc_fcp_pkt *fsp, u16 xid);99void fc_fcp_ddp_done(struct fc_fcp_pkt *fsp);100 101/*102 * Module setup functions103 */104int fc_setup_exch_mgr(void);105void fc_destroy_exch_mgr(void);106int fc_setup_rport(void);107void fc_destroy_rport(void);108int fc_setup_fcp(void);109void fc_destroy_fcp(void);110 111/*112 * Internal libfc functions113 */114const char *fc_els_resp_type(struct fc_frame *);115extern void fc_fc4_add_lport(struct fc_lport *);116extern void fc_fc4_del_lport(struct fc_lport *);117extern void fc_fc4_conf_lport_params(struct fc_lport *, enum fc_fh_type);118 119/*120 * Copies a buffer into an sg list121 */122u32 fc_copy_buffer_to_sglist(void *buf, size_t len,123 struct scatterlist *sg,124 u32 *nents, size_t *offset,125 u32 *crc);126 127#endif /* _FC_LIBFC_H_ */128