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.org |
6 | */ |
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 | |
20 | extern 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 | */ |
87 | extern struct fc4_prov *fc_active_prov[]; /* providers without recv */ |
88 | extern struct fc4_prov *fc_passive_prov[]; /* providers with recv */ |
89 | extern struct mutex fc_prov_mutex; /* lock over table changes */ |
90 | |
91 | extern struct fc4_prov fc_rport_t0_prov; /* type 0 provider */ |
92 | extern struct fc4_prov fc_lport_els_prov; /* ELS provider */ |
93 | extern struct fc4_prov fc_rport_fcp_init; /* FCP initiator provider */ |
94 | |
95 | /* |
96 | * Set up direct-data placement for this I/O request |
97 | */ |
98 | void fc_fcp_ddp_setup(struct fc_fcp_pkt *fsp, u16 xid); |
99 | void fc_fcp_ddp_done(struct fc_fcp_pkt *fsp); |
100 | |
101 | /* |
102 | * Module setup functions |
103 | */ |
104 | int fc_setup_exch_mgr(void); |
105 | void fc_destroy_exch_mgr(void); |
106 | int fc_setup_rport(void); |
107 | void fc_destroy_rport(void); |
108 | int fc_setup_fcp(void); |
109 | void fc_destroy_fcp(void); |
110 | |
111 | /* |
112 | * Internal libfc functions |
113 | */ |
114 | const char *fc_els_resp_type(struct fc_frame *); |
115 | extern void fc_fc4_add_lport(struct fc_lport *); |
116 | extern void fc_fc4_del_lport(struct fc_lport *); |
117 | extern void fc_fc4_conf_lport_params(struct fc_lport *, enum fc_fh_type); |
118 | |
119 | /* |
120 | * Copies a buffer into an sg list |
121 | */ |
122 | u32 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 | |