6490981 netstrategy continues to report empty strings for dhcp'd interfaces even after a driver is added

4 files changed, 24 insertions, 2 deletions

diff --git a/usr/src/uts/common/io/strplumb.c b/usr/src/uts/common/io/strplumb.c
index 7da86a44bb..0c7d6d50f2 100644
--- a/usr/src/uts/common/io/strplumb.c
+++ b/usr/src/uts/common/io/strplumb.c
@@ -667,9 +667,12 @@ int dl_bind(ldi_handle_t lh, uint_t sap, uint_t max_conn,
     uint_t service, uint_t conn_mgmt);
 int dl_phys_addr(ldi_handle_t lh, struct ether_addr *eaddr);
 
+#endif  /* !__sparc */
+
 char *
 strplumb_get_netdev_path(void)
 {
+#ifndef	__sparc
 	char *macstr, *devpath = NULL;
 	uchar_t *bootp;
 	uint_t bootp_len, len;
@@ -710,8 +713,14 @@ strplumb_get_netdev_path(void)
 
 	ddi_walk_devs(ddi_root_node(), matchmac, (void *)&devpath);
 	return (devpath);
+
+#else
+	return (NULL);
+#endif  /* !__sparc */
 }
 
+#ifndef __sparc
+
 /*
  * Get boot path from the boot_mac address
  */
diff --git a/usr/src/uts/common/syscall/systeminfo.c b/usr/src/uts/common/syscall/systeminfo.c
index 6d7d5ae40f..dd3dade3c5 100644
--- a/usr/src/uts/common/syscall/systeminfo.c
+++ b/usr/src/uts/common/syscall/systeminfo.c
@@ -19,7 +19,7 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
+ * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
@@ -147,10 +147,20 @@ systeminfo(int command, char *buf, long count)
 			strcnt = 0;
 		} else {
 			/*
+			 * If the interface didn't have a name (bindable
+			 * driver) to begin with, it might have one now.
+			 * So, re-run strplumb_get_netdev_path() to see
+			 * if one can be established at this time.
+			 */
+			if (netdev_path == NULL || netdev_path[0] == '\0') {
+				netdev_path = strplumb_get_netdev_path();
+			}
+			/*
 			 * If the interface name has not yet been resolved
 			 * (first IFNAMSIZ bytes of dhcack[]) and a valid
 			 * netdev_path[] was stashed by loadrootmodules in
-			 * swapgeneric.c, resolve the interface name now.
+			 * swapgeneric.c, or established above, resolve
+			 * the interface name now.
 			 */
 			if (dhcack[0] == '\0' &&
 			    netdev_path != NULL && netdev_path[0] != '\0') {
diff --git a/usr/src/uts/sparc/ml/modstubs.s b/usr/src/uts/sparc/ml/modstubs.s
index f90032f9e9..857732e31e 100644
--- a/usr/src/uts/sparc/ml/modstubs.s
+++ b/usr/src/uts/sparc/ml/modstubs.s
@@ -731,6 +731,7 @@ stubs_base:
 	MODULE(strplumb,misc);
 	STUB(strplumb, strplumb,     0);
 	STUB(strplumb, strplumb_load, 0);
+	STUB(strplumb, strplumb_get_netdev_path, 0)
 	END_MODULE(strplumb);
 #endif
 
diff --git a/usr/src/uts/sun/sys/bootconf.h b/usr/src/uts/sun/sys/bootconf.h
index 2387d44d0d..beaa49a17c 100644
--- a/usr/src/uts/sun/sys/bootconf.h
+++ b/usr/src/uts/sun/sys/bootconf.h
@@ -245,6 +245,8 @@ extern char *default_path;
 extern char *dhcack;
 extern char *netdev_path;
 
+extern char *strplumb_get_netdev_path(void);
+
 #endif /* _KERNEL && !_BOOT */
 
 #ifdef __cplusplus