Add "-A" or "--ucast_cache" option to opensm.

Signed-off-by: Yevgeny Kliteynik <[EMAIL PROTECTED]>
---
 opensm/include/opensm/osm_subnet.h |    6 +++++-
 opensm/opensm/main.c               |   20 ++++++++++++++++++--
 opensm/opensm/osm_subnet.c         |   11 ++++++++++-
 3 files changed, 33 insertions(+), 4 deletions(-)

diff --git a/opensm/include/opensm/osm_subnet.h 
b/opensm/include/opensm/osm_subnet.h
index 0c7f3b9..1ee6362 100644
--- a/opensm/include/opensm/osm_subnet.h
+++ b/opensm/include/opensm/osm_subnet.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2004-2007 Voltaire, Inc. All rights reserved.
- * Copyright (c) 2002-2005 Mellanox Technologies LTD. All rights reserved.
+ * Copyright (c) 2002-2008 Mellanox Technologies LTD. All rights reserved.
  * Copyright (c) 1996-2003 Intel Corporation. All rights reserved.
  * Copyright (c) 2008 Xsigo Systems Inc.  All rights reserved.
  *
@@ -183,6 +183,7 @@ typedef struct osm_subn_opt {
        boolean_t port_profile_switch_nodes;
        boolean_t sweep_on_trap;
        char *routing_engine_names;
+       boolean_t use_ucast_cache;
        boolean_t connect_roots;
        char *lid_matrix_dump_file;
        char *lfts_file;
@@ -361,6 +362,9 @@ typedef struct osm_subn_opt {
 *              up/down routing engine (even if this violates "pure" deadlock
 *              free up/down algorithm)
 *
+*      use_ucast_cache
+*              When TRUE enables unicast routing cache.
+*
 *      lid_matrix_dump_file
 *              Name of the lid matrix dump file from where switch
 *              lid matrices (min hops tables) will be loaded
diff --git a/opensm/opensm/main.c b/opensm/opensm/main.c
index 2f53157..3f4f9dd 100644
--- a/opensm/opensm/main.c
+++ b/opensm/opensm/main.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2004-2007 Voltaire, Inc. All rights reserved.
- * Copyright (c) 2002-2005 Mellanox Technologies LTD. All rights reserved.
+ * Copyright (c) 2002-2008 Mellanox Technologies LTD. All rights reserved.
  * Copyright (c) 1996-2003 Intel Corporation. All rights reserved.
  *
  * This software is available to you under a choice of one of two
@@ -189,6 +189,16 @@ static void show_usage(void)
               "          and in this way be IBA compliant. In many cases,\n"
               "          this can violate \"pure\" deadlock free algorithm, 
so\n"
               "          use it carefully.\n\n");
+       printf("-A\n"
+              "--ucast_cache\n"
+              "          This option enables unicast routing cache to 
prevent\n"
+              "          routing recalculation (which is a heavy task in a\n"
+              "          large cluster) when there was no topology change\n"
+              "          detected during the heavy sweep, or when the 
topology\n"
+              "          change does not require new routing calculation,\n"
+              "          e.g. in case of host reboot.\n"
+              "          This option becomes very handy when the cluster 
size\n"
+              "          is thousands of nodes.\n\n");
        printf("-M\n"
               "--lid_matrix_file <file name>\n"
               "          This option specifies the name of the lid matrix dump 
file\n"
@@ -546,7 +556,7 @@ int main(int argc, char *argv[])
        uint32_t val;
        unsigned config_file_done = 0;
        const char *const short_option =
-           "F:c:i:f:ed:g:l:L:s:t:a:u:m:X:R:zM:U:S:P:Y:NBIQvVhoryxp:n:q:k:C:";
+           "F:c:i:f:ed:g:l:L:s:t:a:u:m:X:R:zM:U:S:P:Y:ANBIQvVhoryxp:n:q:k:C:";

        /*
           In the array below, the 2nd parameter specifies the number
@@ -583,6 +593,7 @@ int main(int argc, char *argv[])
                {"priority", 1, NULL, 'p'},
                {"smkey", 1, NULL, 'k'},
                {"routing_engine", 1, NULL, 'R'},
+               {"ucast_cache", 0, NULL, 'A'},
                {"connect_roots", 0, NULL, 'z'},
                {"lid_matrix_file", 1, NULL, 'M'},
                {"lfts_file", 1, NULL, 'U'},
@@ -862,6 +873,11 @@ int main(int argc, char *argv[])
                        printf(" Connect roots option is on\n");
                        break;

+               case 'A':
+                       opt.use_ucast_cache = TRUE;
+                       printf(" Unicast routing cache option is on\n");
+                       break;
+
                case 'M':
                        opt.lid_matrix_dump_file = optarg;
                        printf(" Lid matrix dump file is \'%s\'\n", optarg);
diff --git a/opensm/opensm/osm_subnet.c b/opensm/opensm/osm_subnet.c
index a39ce75..63c111c 100644
--- a/opensm/opensm/osm_subnet.c
+++ b/opensm/opensm/osm_subnet.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2004-2007 Voltaire, Inc. All rights reserved.
- * Copyright (c) 2002-2005 Mellanox Technologies LTD. All rights reserved.
+ * Copyright (c) 2002-2008 Mellanox Technologies LTD. All rights reserved.
  * Copyright (c) 1996-2003 Intel Corporation. All rights reserved.
  * Copyright (c) 2008 Xsigo Systems Inc.  All rights reserved.
  *
@@ -442,6 +442,7 @@ void osm_subn_set_default_opt(IN osm_subn_opt_t * const 
p_opt)
        p_opt->port_prof_ignore_file = NULL;
        p_opt->port_profile_switch_nodes = FALSE;
        p_opt->sweep_on_trap = TRUE;
+       p_opt->use_ucast_cache = FALSE;
        p_opt->routing_engine_names = NULL;
        p_opt->connect_roots = FALSE;
        p_opt->lid_matrix_dump_file = NULL;
@@ -1269,6 +1270,9 @@ int osm_subn_parse_conf_file(char *file_name, 
osm_subn_opt_t * const p_opts)
                opts_unpack_boolean("connect_roots",
                                    p_key, p_val, &p_opts->connect_roots);

+               opts_unpack_boolean("use_ucast_cache",
+                                   p_key, p_val, &p_opts->use_ucast_cache);
+
                opts_unpack_charp("log_file", p_key, p_val, &p_opts->log_file);

                opts_unpack_uint32("log_max_size",
@@ -1534,6 +1538,11 @@ int osm_subn_write_conf_file(char *file_name, IN 
osm_subn_opt_t *const p_opts)
                p_opts->connect_roots ? "TRUE" : "FALSE");

        fprintf(opts_file,
+               "# Use unicast routing cache (use FALSE if unsure)\n"
+               "use_ucast_cache %s\n\n",
+               p_opts->use_ucast_cache ? "TRUE" : "FALSE");
+
+       fprintf(opts_file,
                "# Lid matrix dump file name\n"
                "lid_matrix_dump_file %s\n\n", p_opts->lid_matrix_dump_file ?
                p_opts->lid_matrix_dump_file : null_str);
-- 
1.5.1.4

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