In various scenarios where userland needs to interact with hardware,
userland often needs to know exactly what driver (and driver version) is
currently running on a given interface. Hotplugging and other
applications could -really- use the ability to find out bus information
for a given interface. Firmware
So I propose the attached addition to the ethtool interface. It adds a
new structure with several ASCII text fields, which are filled in at the
driver's discretion. Userland then interprets these fields for their
own evil designs.
Currently (AFAIK) for all kernel interfaces, userland has no reliable
way to associate a hardware device with a kernel interface, or a driver
with a kernel interface[1]. Since we have no generic register_driver()
interface, solving this problem means implementing a domain-specific
solution like I have done here...
--
Jeff Garzik | May you have warm words on a cold evening,
Building 1024 | a full mooon on a dark night,
MandrakeSoft | and a smooth road all the way to your door.
Index: include/linux/ethtool.h
===================================================================
RCS file: /cvsroot/gkernel/linux_2_4/include/linux/Attic/ethtool.h,v
retrieving revision 1.1.1.2
diff -u -r1.1.1.2 ethtool.h
--- include/linux/ethtool.h 2000/11/14 22:01:49 1.1.1.2
+++ include/linux/ethtool.h 2001/03/21 12:42:15
@@ -24,10 +24,21 @@
u32 reserved[4];
};
+/* these strings are set to whatever the driver author decides... */
+struct ethtool_drvinfo {
+ char driver[32]; /* driver short name, "tulip", "eepro100" */
+ char version[32]; /* driver version string */
+ char fw_version[32]; /* firmware version string, if applicable */
+ char bus_info[32]; /* Bus info for this interface. For PCI
+ * devices, use pci_dev->slot_name. */
+ char reserved1[32];
+ char reserved2[32];
+};
/* CMDs currently supported */
-#define ETHTOOL_GSET 0x00000001 /* Get settings, non-privileged. */
+#define ETHTOOL_GSET 0x00000001 /* Get settings. */
#define ETHTOOL_SSET 0x00000002 /* Set settings, privileged. */
+#define ETHTOOL_GDRVINFO 0x00000003 /* Get driver info. */
/* compatibility with older code */
#define SPARC_ETH_GSET ETHTOOL_GSET
