NEX-16824 SMB client connection setup rework
NEX-17232 SMB client reconnect failures
Reviewed by: Evan Layton <evan.layton@nexenta.com>
Reviewed by: Matt Barden <matt.barden@nexenta.com>
and: (improve debug)

          --- old/usr/src/uts/common/fs/smbclnt/netsmb/smb_trantcp.h
          +++ new/usr/src/uts/common/fs/smbclnt/netsmb/smb_trantcp.h

   1    1  /*
   2    2   * Copyright (c) 2000-2001, Boris Popov
   3    3   * All rights reserved.
   4    4   *
   5    5   * Redistribution and use in source and binary forms, with or without
   6    6   * modification, are permitted provided that the following conditions
   7    7   * are met:
   8    8   * 1. Redistributions of source code must retain the above copyright
   9    9   *    notice, this list of conditions and the following disclaimer.
  10   10   * 2. Redistributions in binary form must reproduce the above copyright
  11   11   *    notice, this list of conditions and the following disclaimer in the
  12   12   *    documentation and/or other materials provided with the distribution.
  13   13   * 3. All advertising materials mentioning features or use of this software
  14   14   *    must display the following acknowledgement:
  15   15   *    This product includes software developed by Boris Popov.
  16   16   * 4. Neither the name of the author nor the names of any co-contributors
  17   17   *    may be used to endorse or promote products derived from this software
  18   18   *    without specific prior written permission.
  19   19   *
  20   20   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21   21   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22   22   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23   23   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24   24   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

  25   25   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26   26   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27   27   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28   28   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29   29   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30   30   * SUCH DAMAGE.
  31   31   *
  32   32   * $Id: smb_trantcp.h,v 1.8 2004/08/03 23:50:01 lindak Exp $
  33   33   */
  34   34  /*
  35      - * Copyright 2012 Nexenta Systems, Inc.  All rights reserved.
       35 + * Copyright 2018 Nexenta Systems, Inc.  All rights reserved.
  36   36   */
  37   37  #ifndef _NETSMB_SMB_TRANTCP_H_
  38   38  #define _NETSMB_SMB_TRANTCP_H_
  39   39  
  40   40  enum nbstate {
  41   41          NBST_CLOSED,
       42 +        NBST_IDLE,
  42   43          NBST_RQSENT,
  43   44          NBST_SESSION,
  44   45          NBST_RETARGET,
  45   46          NBST_REFUSED
  46   47  };
  47   48  
  48   49  
  49   50  /*
  50   51   * socket specific data
  51   52   */

  52   53  struct nbpcb {
  53   54          struct smb_vc   *nbp_vc;
  54   55          struct tiuser   *nbp_tiptr;     /* KTLI transport handle... */
  55   56          mblk_t          *nbp_frag;      /* left-over from last recv */
  56   57  
  57   58          struct sockaddr_nb *nbp_laddr;  /* local address */
  58   59          struct sockaddr_nb *nbp_paddr;  /* peer address */
  59   60          void            *nbp_selectid;
  60   61          cred_t          *nbp_cred;
  61   62  
  62   63          int             nbp_flags;
  63   64  #define NBF_LOCADDR     0x0001          /* has local addr */
  64   65  #define NBF_CONNECTED   0x0002
  65   66  #define NBF_RECVLOCK    0x0004
  66   67  #define NBF_SENDLOCK    0x0008
  67   68  #define NBF_LOCKWAIT    0x0010
  68   69  
  69   70          ushort_t        nbp_fmode;
  70   71          enum nbstate    nbp_state;
  71   72          struct timespec nbp_timo;
  72   73          int             nbp_sndbuf;
  73   74          int             nbp_rcvbuf;
  74   75          kmutex_t        nbp_lock;
  75   76          kcondvar_t      nbp_cv;
  76   77  };
  77   78  typedef struct nbpcb nbpcb_t;
  78   79  
  79   80  /*
  80   81   * Nominal space allocated per a NETBIOS socket.
  81   82   */
  82   83  #define NB_SNDQ         (10 * 1024)
  83   84  #define NB_RCVQ         (20 * 1024)
  84   85  
  85   86  /*
  86   87   * TCP slowstart presents a problem in conjunction with large
  87   88   * reads.  To ensure a steady stream of ACKs while reading using
  88   89   * large transaction sizes, we call soreceive() with a smaller
  89   90   * buffer size.  See nbssn_recv().
  90   91   */
  91   92  #define NB_SORECEIVE_CHUNK      (8 * 1024)
  92   93  
  93   94  #define SMBSBTIMO 15 /* seconds for sockbuf timeouts */
  94   95  
  95   96  #endif /* !_NETSMB_SMB_TRANTCP_H_ */

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