[ofa-general] [PATCH v3] opensm/osm_console.c : Added dump_portguid function to console to generate a list of port guids matching one or more regexps

[Nicolas Morey Chaisemartin]

This add a dump_portguid functionnality to openSM console which makes it really easy to generate cn_guid_file, root_guid_file and such
by dumping into a file all port guids whom nodedesc contains at least one of the provided regexps

Signed-off-by: Nicolas Morey-Chaisemartin <nicolas.morey-chaisemartin at ext.bull.net>
---
Diff from v2:
- Changed lock to read-only instead of exclusive
- Removed useless cl_spinlock_release (remains from 1st patch)

  opensm/opensm/osm_console.c |  104 +++++++++++++++++++++++++++++++++++++++++++
  1 files changed, 104 insertions(+), 0 deletions(-)

diff --git a/opensm/opensm/osm_console.c b/opensm/opensm/osm_console.c
index c6e8e59..5bc1079 100644
--- a/opensm/opensm/osm_console.c
+++ b/opensm/opensm/osm_console.c
@@ -42,6 +42,7 @@
  #include <sys/types.h>
  #include <sys/socket.h>
  #include <netdb.h>
+#include <regex.h>
  #ifdef ENABLE_OSM_CONSOLE_SOCKET
  #include <arpa/inet.h>
  #endif
@@ -1173,6 +1174,108 @@ static void version_parse(char **p_last, osm_opensm_t * p_osm, FILE * out)
  }

  /* more parse routines go here */
+typedef struct _regexp_list {
+	regex_t exp;
+	struct _regexp_list *next;
+} regexp_list_t;
+
+static void dump_portguid_parse(char **p_last, osm_opensm_t * p_osm, FILE * out)
+{
+	cl_qmap_t *p_port_guid_tbl;
+	osm_port_t *p_port;
+	osm_port_t *p_next_port;
+
+	regexp_list_t *p_head_regexp = NULL;
+	regexp_list_t *p_regexp;
+
+	/* Option variables */
+	char *p_cmd = NULL;
+	FILE *output = out;
+
+	/* Read commande line */
+
+	while (1) {
+		p_cmd = next_token(p_last);
+		if (p_cmd) {
+			if (strcmp(p_cmd, "file") == 0) {
+				p_cmd = next_token(p_last);
+				if (p_cmd) {
+					output = fopen(p_cmd, "w+");
+					if (output == NULL) {
+						fprintf(out,
+							"Could not open file %s: %s\n",
+							p_cmd, strerror(errno));
+						output = out;
+					}
+				} else
+					fprintf(out, "No file name passed\n");
+			} else {
+				p_regexp = malloc(sizeof(*p_regexp));
+				if (regcomp
+				    (&(p_regexp->exp), p_cmd,
+				     REG_NOSUB | REG_EXTENDED) != 0) {
+					fprintf(out,
+						"Couldn't parse regular expression %s. Skipping it.\n",
+						p_cmd);
+				}
+				p_regexp->next = p_head_regexp;
+				p_head_regexp = p_regexp;
+			}
+		} else
+			break;	/* No more tokens */
+
+	}
+
+	/* Check we have at least one expression to match */
+	if (p_head_regexp == NULL) {
+		fprintf(out, "No valid expression provided. Aborting\n");
+		return;
+	}
+
+	if (p_osm->sm.p_subn->need_update != 0) {
+		fprintf(out, "Subnet is not ready yet. Try again later.\n");
+		return;
+	}
+
+	/* Subnet doesn't need to be updated so we can carry on */
+
+	CL_PLOCK_ACQUIRE(p_osm->sm.p_lock);
+	p_port_guid_tbl = &(p_osm->sm.p_subn->port_guid_tbl);
+
+	p_next_port = (osm_port_t *) cl_qmap_head(p_port_guid_tbl);
+	while (p_next_port != (osm_port_t *) cl_qmap_end(p_port_guid_tbl)) {
+
+		p_port = p_next_port;
+		p_next_port =
+		    (osm_port_t *) cl_qmap_next(&p_next_port->map_item);
+
+		for (p_regexp = p_head_regexp; p_regexp != NULL;
+		     p_regexp = p_regexp->next)
+			if (regexec
+			    (&(p_regexp->exp), p_port->p_node->print_desc, 0,
+			     NULL, 0) == 0)
+				fprintf(output, "0x%" PRIxLEAST64 "\n",
+					cl_ntoh64(p_port->p_physp->port_guid));
+	}
+
+	CL_PLOCK_RELEASE(p_osm->sm.p_lock);
+	if (output != out)
+		fclose(output);
+
+}
+
+static void help_dump_portguid(FILE * out, int detail)
+{
+	fprintf(out,
+		"dump_portguid [file filename] regexp1 [regexp2 [regexp3 ...]] -- Dump port GUID matching a regexp \n");
+	if (detail) {
+		fprintf(out,
+			"getguidgetguid  -- Dump all the port GUID whom node_desc matches one of the provided regexp\n");
+		fprintf(out,
+			"   [file filename] -- Send the port GUID list to the specified file instead of regular output\n");
+	}
+
+}

  static const struct command console_cmds[] = {
  	{"help", &help_command, &help_parse},
@@ -1192,6 +1295,7 @@ static const struct command console_cmds[] = {
  #ifdef ENABLE_OSM_PERF_MGR
  	{"perfmgr", &help_perfmgr, &perfmgr_parse},
  #endif				/* ENABLE_OSM_PERF_MGR */
+	{"dump_portguid", &help_dump_portguid, &dump_portguid_parse},
  	{NULL, NULL, NULL}	/* end of array */
  };

-- 
1.6.1