iscsi-scst/kernel/iscsi_dbg.h

   1 /*
   2  *  Copyright (C) 2007 Vladislav Bolkhovitin
   3  *  Copyright (C) 2007 CMS Distribution Limited
   4  *
   5  *  This program is free software; you can redistribute it and/or
   6  *  modify it under the terms of the GNU General Public License
   7  *  as published by the Free Software Foundation, version 2
   8  *  of the License.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  *  GNU General Public License for more details.
  14  */
  15
  16 #ifndef ISCSI_DBG_H
  17 #define ISCSI_DBG_H
  18
  19 #define LOG_PREFIX "iscsi-scst"
  20
  21 #include <scst_debug.h>
  22
  23 #define TRACE_D_READ            0x80000000
  24 #define TRACE_D_WRITE           0x40000000
  25 #define TRACE_CONN_OC           0x20000000
  26 #define TRACE_D_IOV             0x10000000
  27 #define TRACE_D_DUMP_PDU        0x08000000
  28 #define TRACE_NET_PG            0x04000000
  29
  30 #define TRACE_D_DATA            (TRACE_D_READ | TRACE_D_WRITE)
  31
  32 #define TRACE_ALL_NO_DATA       (TRACE_ALL & ~TRACE_D_IOV & ~TRACE_D_DUMP_PDU & ~TRACE_D_DATA)
  33
  34 #ifdef DEBUG
  35 #define ISCSI_DEFAULT_LOG_FLAGS (TRACE_FUNCTION | TRACE_LINE | TRACE_PID | \
  36         TRACE_OUT_OF_MEM | TRACE_MGMT | TRACE_MGMT_DEBUG | \
  37         TRACE_MINOR | TRACE_SPECIAL | TRACE_CONN_OC)
  38 #else
  39 #define ISCSI_DEFAULT_LOG_FLAGS (TRACE_OUT_OF_MEM | TRACE_MGMT | \
  40         TRACE_MINOR | TRACE_SPECIAL)
  41 #endif
  42
  43 #ifdef DEBUG
  44 struct msghdr;
  45 struct iscsi_pdu;
  46 extern void iscsi_dump_iov(struct msghdr *msg);
  47 extern void iscsi_dump_pdu(struct iscsi_pdu *pdu);
  48 #else
  49 #define iscsi_dump_iov(x) do {} while (0)
  50 #define iscsi_dump_pdu(x) do {} while (0)
  51 #endif
  52
  53 #if defined(DEBUG) || defined(TRACING)
  54 extern unsigned long iscsi_trace_flag;
  55 #define trace_flag iscsi_trace_flag
  56
  57 #define TRACE_CONN_CLOSE(format, args...)                           \
  58 do {                                                                \
  59   if (trace_flag & TRACE_CONN_OC)                                   \
  60   {                                                                 \
  61     char *__tflag = LOG_FLAG;                                       \
  62     if (debug_print_prefix(trace_flag, LOG_PREFIX, __FUNCTION__,    \
  63                 __LINE__) > 0)                                      \
  64     {                                                               \
  65       __tflag = NO_FLAG;                                            \
  66     }                                                               \
  67     PRINT(NO_FLAG, "%s" format, __tflag, args);                     \
  68   }                                                                 \
  69 } while(0)
  70
  71 #define TRACE_NET_PAGE(format, args...)                             \
  72 do {                                                                \
  73   if (trace_flag & TRACE_NET_PG)                                    \
  74   {                                                                 \
  75     char *__tflag = LOG_FLAG;                                       \
  76     if (debug_print_prefix(trace_flag, LOG_PREFIX, __FUNCTION__,    \
  77                 __LINE__) > 0)                                      \
  78     {                                                               \
  79       __tflag = NO_FLAG;                                            \
  80     }                                                               \
  81     PRINT(NO_FLAG, "%s" format, __tflag, args);                     \
  82   }                                                                 \
  83 } while(0)
  84
  85 #else /* defined(DEBUG) || defined(TRACING) */
  86 #define TRACE_CONN_CLOSE(format, args...) {}
  87 #define TRACE_NET_PAGE(format, args...) {}
  88 #endif
  89
  90 #endif