Add some error checking into the btl_openib_ipaddr_in|exclude

calculations, and fix a few small memory leaks in that same logic.

This commit was SVN r21196.

ompi/mca/btl/openib/btl_openib_iwarp.c

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2008      Chelsio, Inc. All rights reserved.
- * Copyright (c) 2008 Cisco Systems, Inc.  All rights reserved.
+ * Copyright (c) 2008-2009 Cisco Systems, Inc.  All rights reserved.
  *
  * Additional copyrights may follow
  *
@@ -21,6 +21,8 @@
 #include "opal/util/argv.h"
 #include "opal/util/if.h"
 
+#include "orte/util/show_help.h"
+
 #include "connect/connect.h"
 #endif
 /* Always want to include this file */
@@ -68,17 +70,19 @@ static char *stringify(uint32_t addr)
 }
 #endif
 
-/* Note that each device port can have multiple IP addresses associated with it 
- * (aka IP aliasing).  However, the openib module only knows about (device,port)
- * tuples -- not IP addresses (only the RDMA CM CPC knows which IP addresses are
- * associated with each (device,port) tuple).  Thus, any searching of device
- * list for the IP Address or subnets may not work as one might expect.  The
- * current behavior is to return the IP address (or subnet) of the *first*
- * instance of the device on the list.  This behavior is uniform for subnet and
- * IP addresses and thus should not cause any mismatches.  If this behavior is
- * not preferred by the user, the MCA parameters to include/exclude specific IP
- * addresses can be used to precisely specify which addresses are used (e.g., to
- * effect specific subnet routing).
+/* Note that each device port can have multiple IP addresses
+ * associated with it (aka IP aliasing).  However, the openib module
+ * only knows about (device,port) tuples -- not IP addresses (only the
+ * RDMA CM CPC knows which IP addresses are associated with each
+ * (device,port) tuple).  Thus, any searching of device list for the
+ * IP Address or subnets may not work as one might expect.  The
+ * current behavior is to return the IP address (or subnet) of the
+ * *first* instance of the device on the list.  This behavior is
+ * uniform for subnet and IP addresses and thus should not cause any
+ * mismatches.  If this behavior is not preferred by the user, the MCA
+ * parameters to include/exclude specific IP addresses can be used to
+ * precisely specify which addresses are used (e.g., to effect
+ * specific subnet routing).
  */
 uint64_t mca_btl_openib_get_iwarp_subnet_id(struct ibv_device *ib_dev)
 {
@@ -105,12 +109,12 @@ uint64_t mca_btl_openib_get_iwarp_subnet_id(struct ibv_device *ib_dev)
     return 0;
 }
 
-/* This function should not be necessary, as rdma_get_local_addr would be more
- * correct in returning the IP address given the cm_id (and not necessitate
- * having to do a list look up).  Unfortunately, the subnet and IP address look
- * up needs to match or there could be a mismatch if IP Aliases are being used.
- * For more information on this, please read comment above
- * mca_btl_openib_get_iwarp_subnet_id.
+/* This function should not be necessary, as rdma_get_local_addr would
+ * be more correct in returning the IP address given the cm_id (and
+ * not necessitate having to do a list look up).  Unfortunately, the
+ * subnet and IP address look up needs to match or there could be a
+ * mismatch if IP Aliases are being used.  For more information on
+ * this, please read comment above mca_btl_openib_get_iwarp_subnet_id.
  */
 uint32_t mca_btl_openib_rdma_get_ipv4addr(struct ibv_context *verbs, 
                                           uint8_t port)
@@ -186,9 +190,29 @@ static int ipaddr_specified(struct sockaddr_in *ipaddr, uint32_t netmask)
             struct in_addr ipae;
             char **temp = opal_argv_split(list[i], '/');
 
-            inet_pton(ipaddr->sin_family, temp[0], &ipae);
+            if (NULL == temp || NULL == temp[0] || NULL == temp[1] ||
+                NULL != temp[2]) {
+                orte_show_help("help-mpi-btl-openib.txt",
+                               "invalid ipaddr_inexclude", true, "include",
+                               orte_process_info.nodename, list[i],
+                               "Invalid specification (missing \"/\")");
+                if (NULL != temp) {
+                    opal_argv_free(temp);
+                }
+                continue;
+            }
+
+            if (1 != inet_pton(ipaddr->sin_family, temp[0], &ipae)) {
+                orte_show_help("help-mpi-btl-openib.txt",
+                               "invalid ipaddr_inexclude", true, "include",
+                               orte_process_info.nodename, list[i],
+                               "Invalid specification (inet_pton() failed)");
+                opal_argv_free(temp);
+                continue;
+            }
             list_subnet = ipae.s_addr & ~(~0 << atoi(temp[1]));
             subnet = ipaddr->sin_addr.s_addr & ~(~0 << netmask);
+            opal_argv_free(temp);
 
             if (subnet == list_subnet) { 
                 return 0;
@@ -208,9 +232,29 @@ static int ipaddr_specified(struct sockaddr_in *ipaddr, uint32_t netmask)
             struct in_addr ipae;
             char **temp = opal_argv_split(list[i], '/');
 
-            inet_pton(ipaddr->sin_family, temp[0], &ipae);
+            if (NULL == temp || NULL == temp[0] || NULL == temp[1] ||
+                NULL != temp[2]) {
+                orte_show_help("help-mpi-btl-openib.txt",
+                               "invalid ipaddr_inexclude", true, "exclude",
+                               orte_process_info.nodename, list[i],
+                               "Invalid specification (missing \"/\")");
+                if (NULL != temp) {
+                    opal_argv_free(temp);
+                }
+                continue;
+            }
+
+            if (1 != inet_pton(ipaddr->sin_family, temp[0], &ipae)) {
+                orte_show_help("help-mpi-btl-openib.txt",
+                               "invalid ipaddr_inexclude", true, "exclude",
+                               orte_process_info.nodename, list[i],
+                               "Invalid specification (inet_pton() failed)");
+                opal_argv_free(temp);
+                continue;
+            }
             list_subnet = ipae.s_addr & ~(~0 << atoi(temp[1]));
             subnet = ipaddr->sin_addr.s_addr & ~(~0 << netmask);
+            opal_argv_free(temp);
 
             if (subnet == list_subnet) { 
                 return 1;

ompi/mca/btl/openib/help-mpi-btl-openib.txt

@@ -10,7 +10,7 @@
 #                         University of Stuttgart.  All rights reserved.
 # Copyright (c) 2004-2006 The Regents of the University of California.
 #                         All rights reserved.
-# Copyright (c) 2006-2008 Cisco Systems, Inc.  All rights reserved.
+# Copyright (c) 2006-2009 Cisco Systems, Inc.  All rights reserved.
 # Copyright (c) 2007-2008 Mellanox Technologies. All rights reserved.
 # $COPYRIGHT$
 # 
@@ -581,3 +581,11 @@ MPI to support iWARP devices.
 
 (This message is being displayed because you told Open MPI to use
 iWARP devices via the btl_openib_device_type MCA parameter)
+#
+[invalid ipaddr_inexclude]
+WARNING: An invalid value was given for btl_openib_ipaddr_%s.  This
+value will be ignored.
+
+  Local host: %s
+  Value:      %s
+  Message:    %s