[src/trunk]: src/sbin/scsictl Add REPORT_LUNS command.

[mlelstv <mlelstv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e70b279d844c
branches:  trunk
changeset: 369554:e70b279d844c
user:      mlelstv <mlelstv%NetBSD.org@localhost>
date:      Sun Aug 21 12:44:16 2022 +0000

description:
Add REPORT_LUNS command.

diffstat:

 sbin/scsictl/scsictl.8 |  23 ++++++++++++-
 sbin/scsictl/scsictl.c |  88 ++++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 108 insertions(+), 3 deletions(-)

diffs (160 lines):

diff -r 7cf3931248a6 -r e70b279d844c sbin/scsictl/scsictl.8
--- a/sbin/scsictl/scsictl.8    Sun Aug 21 12:34:39 2022 +0000
+++ b/sbin/scsictl/scsictl.8    Sun Aug 21 12:44:16 2022 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: scsictl.8,v 1.31 2017/03/08 11:45:14 tsutsui Exp $
+.\"    $NetBSD: scsictl.8,v 1.32 2022/08/21 12:44:16 mlelstv Exp $
 .\"
 .\" Copyright (c) 1998, 2002 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -196,6 +196,27 @@
 .Ar save
 after the automatic reallocation enable state will cause the parameters to be
 saved in non-volatile storage.
+.It Cm reportluns Ar normal|wellknown|all|#
+Report Logical Units provided by the drive.
+.Bl -hang -compact
+.It normal
+report all but well-known logical units.
+This is also the default.
+.It wellknown
+report the well known logical units instead. E.g.,
+.Bl -inset -compact
+.It 0xc101h
+Addressable objects
+.It 0xc102h
+Addressable objects associations
+.It 0xc103h
+SCSI target device identification
+.El
+.It all
+report all logical units.
+.It #
+Use the given numeric select report value (0-255).
+.El
 .El
 .Sh BUS COMMANDS
 The following commands are supported for SCSI busses:
diff -r 7cf3931248a6 -r e70b279d844c sbin/scsictl/scsictl.c
--- a/sbin/scsictl/scsictl.c    Sun Aug 21 12:34:39 2022 +0000
+++ b/sbin/scsictl/scsictl.c    Sun Aug 21 12:44:16 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: scsictl.c,v 1.39 2016/11/19 08:43:40 flxd Exp $        */
+/*     $NetBSD: scsictl.c,v 1.40 2022/08/21 12:44:16 mlelstv Exp $     */
 
 /*-
  * Copyright (c) 1998, 2002 The NetBSD Foundation, Inc.
@@ -36,7 +36,7 @@
 #include <sys/cdefs.h>
 
 #ifndef lint
-__RCSID("$NetBSD: scsictl.c,v 1.39 2016/11/19 08:43:40 flxd Exp $");
+__RCSID("$NetBSD: scsictl.c,v 1.40 2022/08/21 12:44:16 mlelstv Exp $");
 #endif
 
 
@@ -93,6 +93,7 @@
 static void    device_setspeed(int, char *[]);
 static void    device_getrealloc(int, char *[]);
 static void    device_setrealloc(int, char *[]);
+static void    device_reportluns(int, char *[]);
 
 static struct command device_commands[] = {
        { "defects",    "[primary] [grown] [block|byte|physical]",
@@ -115,6 +116,7 @@
        { "setspeed",   "[speed]",              device_setspeed },
        { "getrealloc", "",                     device_getrealloc },
        { "setrealloc", "none|r|w|rw [save]",   device_setrealloc },
+       { "reportluns", "normal|wellknown|all|#",       device_reportluns },
        { NULL,         NULL,                   NULL },
 };
 
@@ -985,6 +987,88 @@
 }
 
 /*
+ * device_reportluns:
+ *
+ *     Report the known LUNs to which the initiator can send commands
+ */
+static void
+device_reportluns(int argc, char *argv[])
+{
+       struct scsi_report_luns cmd;
+       struct {
+               struct scsi_report_luns_header header;
+               struct scsi_report_luns_lun desc[1];
+       } *data;
+       u_int32_t dlen, len;
+       u_int64_t lun;
+       size_t count, idx;
+       unsigned long sel;
+       char *endp;
+       int i;
+
+       dlen = USHRT_MAX; /* good for > 8000 LUNs */
+       data = malloc(dlen);
+       if (data == NULL)
+               errx(1, "unable to allocate lun report");
+
+       memset(&cmd, 0, sizeof(cmd));
+       cmd.opcode = SCSI_REPORT_LUNS;
+       cmd.selectreport = SELECTREPORT_NORMAL;
+
+       /* determine which report to read. */
+       for (i = 0; i < argc; i++) {
+               if (strcmp("normal", argv[i]) == 0) {
+                       cmd.selectreport = SELECTREPORT_NORMAL;
+                       continue;
+               }
+               if (strcmp("wellknown", argv[i]) == 0) {
+                       cmd.selectreport = SELECTREPORT_WELLKNOWN;
+                       continue;
+               }
+               if (strcmp("all", argv[i]) == 0) {
+                       cmd.selectreport = SELECTREPORT_ALL;
+                       continue;
+               }
+               sel = strtoul(argv[i], &endp, 0);
+               if (*endp != '\0' || sel > 255)
+                       errx(1, "Unknown select report '%s'", argv[i]);
+               cmd.selectreport = sel;
+       }
+
+       _lto4b(dlen, &cmd.alloclen[0]);
+       cmd.control = 0x00;
+
+       scsi_command(fd, &cmd, sizeof(cmd), data, dlen, 30000, SCCMD_READ);
+
+       len = _4btol(data->header.length);
+       if (len > dlen) {
+               /* XXX reallocate and retry */
+               printf("%s: report truncated %" PRIu32 "to %" PRIu32 "\n",
+                   dvname, len, dlen);
+               len = dlen;
+       }
+
+       count = len / sizeof(data->desc[0]);
+
+       for (idx=0; idx<count; ++idx) {
+               lun = _8btol(data->desc[idx].lun);
+
+               /*
+                * swizzle bits so that LUNs 0..255 are
+                * mapped to numbers 0..255
+                */
+               lun = (lun & 0xffff000000000000ull) >> 48
+                   | (lun & 0x0000ffff00000000ull) >> 16
+                   | (lun & 0x00000000ffff0000ull) << 16
+                   | (lun & 0x000000000000ffffull) << 48;
+
+               printf("%s: lun %" PRIu64 "\n", dvname, lun);
+       }
+
+       free(data);
+}
+
+/*
  * device_getrealloc:
  *
  *     Get the automatic reallocation parameters for a SCSI disk.