1 /* 2 * Copyright(c) 2009 Intel Corporation. All rights reserved. 3 * 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. 7 * 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 11 * more details. 12 * 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. 16 * 17 * Maintained at www.Open-FCoE.org 18 */ 19 20 #ifndef _FC_LIBFC_H_ 21 #define _FC_LIBFC_H_ 22 23 #define FC_LIBFC_LOGGING 0x01 /* General logging, not categorized */ 24 #define FC_LPORT_LOGGING 0x02 /* lport layer logging */ 25 #define FC_DISC_LOGGING 0x04 /* discovery layer logging */ 26 #define FC_RPORT_LOGGING 0x08 /* rport layer logging */ 27 #define FC_FCP_LOGGING 0x10 /* I/O path logging */ 28 #define FC_EM_LOGGING 0x20 /* Exchange Manager logging */ 29 #define FC_EXCH_LOGGING 0x40 /* Exchange/Sequence logging */ 30 #define FC_SCSI_LOGGING 0x80 /* SCSI logging (mostly error handling) */ 31 32 extern unsigned int fc_debug_logging; 33 34 #define FC_CHECK_LOGGING(LEVEL, CMD) \ 35 do { \ 36 if (unlikely(fc_debug_logging & LEVEL)) \ 37 do { \ 38 CMD; \ 39 } while (0); \ 40 } while (0) 41 42 #define FC_LIBFC_DBG(fmt, args...) \ 43 FC_CHECK_LOGGING(FC_LIBFC_LOGGING, \ 44 pr_info("libfc: " fmt, ##args)) 45 46 #define FC_LPORT_DBG(lport, fmt, args...) \ 47 FC_CHECK_LOGGING(FC_LPORT_LOGGING, \ 48 pr_info("host%u: lport %6.6x: " fmt, \ 49 (lport)->host->host_no, \ 50 (lport)->port_id, ##args)) 51 52 #define FC_DISC_DBG(disc, fmt, args...) \ 53 FC_CHECK_LOGGING(FC_DISC_LOGGING, \ 54 pr_info("host%u: disc: " fmt, \ 55 fc_disc_lport(disc)->host->host_no, \ 56 ##args)) 57 58 #define FC_RPORT_ID_DBG(lport, port_id, fmt, args...) \ 59 FC_CHECK_LOGGING(FC_RPORT_LOGGING, \ 60 pr_info("host%u: rport %6.6x: " fmt, \ 61 (lport)->host->host_no, \ 62 (port_id), ##args)) 63 64 #define FC_RPORT_DBG(rdata, fmt, args...) \ 65 FC_RPORT_ID_DBG((rdata)->local_port, (rdata)->ids.port_id, fmt, ##args) 66 67 #define FC_FCP_DBG(pkt, fmt, args...) \ 68 FC_CHECK_LOGGING(FC_FCP_LOGGING, \ 69 { \ 70 if ((pkt)->seq_ptr) { \ 71 struct fc_exch *_ep = NULL; \ 72 _ep = fc_seq_exch((pkt)->seq_ptr); \ 73 pr_info("host%u: fcp: %6.6x: " \ 74 "xid %04x-%04x: " fmt, \ 75 (pkt)->lp->host->host_no, \ 76 (pkt)->rport->port_id, \ 77 (_ep)->oxid, (_ep)->rxid, ##args); \ 78 } else { \ 79 pr_info("host%u: fcp: %6.6x: " fmt, \ 80 (pkt)->lp->host->host_no, \ 81 (pkt)->rport->port_id, ##args); \ 82 } \ 83 }) 84 85 #define FC_EXCH_DBG(exch, fmt, args...) \ 86 FC_CHECK_LOGGING(FC_EXCH_LOGGING, \ 87 pr_info("host%u: xid %4x: " fmt, \ 88 (exch)->lp->host->host_no, \ 89 exch->xid, ##args)) 90 91 #define FC_SCSI_DBG(lport, fmt, args...) \ 92 FC_CHECK_LOGGING(FC_SCSI_LOGGING, \ 93 pr_info("host%u: scsi: " fmt, \ 94 (lport)->host->host_no, ##args)) 95 96 /* 97 * FC-4 Providers. 98 */ 99 extern struct fc4_prov *fc_active_prov[]; /* providers without recv */ 100 extern struct fc4_prov *fc_passive_prov[]; /* providers with recv */ 101 extern struct mutex fc_prov_mutex; /* lock over table changes */ 102 103 extern struct fc4_prov fc_rport_t0_prov; /* type 0 provider */ 104 extern struct fc4_prov fc_lport_els_prov; /* ELS provider */ 105 extern struct fc4_prov fc_rport_fcp_init; /* FCP initiator provider */ 106 107 /* 108 * Set up direct-data placement for this I/O request 109 */ 110 void fc_fcp_ddp_setup(struct fc_fcp_pkt *fsp, u16 xid); 111 void fc_fcp_ddp_done(struct fc_fcp_pkt *fsp); 112 113 /* 114 * Module setup functions 115 */ 116 int fc_setup_exch_mgr(void); 117 void fc_destroy_exch_mgr(void); 118 int fc_setup_rport(void); 119 void fc_destroy_rport(void); 120 int fc_setup_fcp(void); 121 void fc_destroy_fcp(void); 122 123 /* 124 * Internal libfc functions 125 */ 126 const char *fc_els_resp_type(struct fc_frame *); 127 extern void fc_fc4_add_lport(struct fc_lport *); 128 extern void fc_fc4_del_lport(struct fc_lport *); 129 extern void fc_fc4_conf_lport_params(struct fc_lport *, enum fc_fh_type); 130 131 /* 132 * Copies a buffer into an sg list 133 */ 134 u32 fc_copy_buffer_to_sglist(void *buf, size_t len, 135 struct scatterlist *sg, 136 u32 *nents, size_t *offset, 137 u32 *crc); 138 139 #endif /* _FC_LIBFC_H_ */ 140