linux-toradex.git/net/core/net-sysfs.c, branch v2.6.28

net: network device name ifalias support

2008-09-23T04:28:11+00:00

This patch add support for keeping an additional character alias
associated with an network interface. This is useful for maintaining
the SNMP ifAlias value which is a user defined value. Routers use this
to hold information like which circuit or line it is connected to. It
is just an arbitrary text label on the network device.

There are two exposed interfaces with this patch, the value can be
read/written either via netlink or sysfs.

This could be maintained just by the snmp daemon, but it is more
generally useful for other management tools, and the kernel is good
place to act as an agreed upon interface to store it.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

wext: make sysfs bits optional and deprecate them

2008-07-14T18:52:57+00:00

The /sys/class/net/*/wireless/ direcory is, as far as I know, not
used by anyone. Additionally, the same data is available via wext
ioctls. Hence the sysfs files are pretty much useless. This patch
makes them optional and schedules them for removal.

Signed-off-by: Johannes Berg 
Cc: Jean Tourrilhes 
Signed-off-by: John W. Linville

bonding: Allow setting max_bonds to zero

2008-06-18T04:00:04+00:00

	Permit bonding to function rationally if max_bonds is set to
zero.  This will load the module, but create no master devices (which can
be created via sysfs).

	Requires some change to bond_create_sysfs; currently, the
netdev sysfs directory is determined from the first bonding device created,
but this is no longer possible.  Instead, an interface from net/core is
created to create and destroy files in net_class.

	Based on a patch submitted by Phil Oester .
Modified by Jay Vosburgh to fix the sysfs issue mentioned above and to
update the documentation.

Signed-off-by: Phil Oester 
Signed-off-by: Jay Vosburgh 
Signed-off-by: Jeff Garzik

net: The dev->get_stats pointer is not NULL nowadays.

2008-05-21T21:12:46+00:00

And so does the pointer is returns, but sysfs and netlinks still 
check for both cases.

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

netns: Fix device renaming for sysfs

2008-05-03T00:00:58+00:00

When a netdev is moved across namespaces with the
'dev_change_net_namespace' function, the 'device_rename' function is
used to fixup kobject and refresh the sysfs tree. The device_rename
function will call kobject_rename and this one will check if there is
an object with the same name and this is the case because we are
renaming the object with the same name.

The use of 'device_rename' seems for me wrong because we usually don't
rename it but just move it across namespaces. As we just want to do a
mini "netdev_[un]register", IMO the functions
'netdev_[un]register_kobject' should be used instead, like an usual
network device [un]registering.

This patch replace device_rename by netdev_unregister_kobject,
followed by netdev_register_kobject.

The netdev_register_kobject will call device_initialize and will raise
a warning indicating the device was already initialized. In order to
fix that, I split the device initialization into a separate function
and use it together with 'netdev_register_kobject' into
register_netdevice. So we can safely call 'netdev_register_kobject' in
'dev_change_net_namespace'.

This fix will allow to properly use the sysfs per namespace which is
coming from -mm tree.

Signed-off-by: Daniel Lezcano 
Acked-by: Benjamin Thery 
Signed-off-by: David S. Miller

[NET]: Expose netdevice dev_id through sysfs

2008-04-20T23:07:43+00:00

Expose dev_id to userspace, because it helps to disambiguate between
interfaces where the MAC address is unique.

This should allow us to simplify the handling of persistent naming for
S390 network devices in udev -- because it can depend on a simple
attribute of the device like the other match criteria, rather than
having a special case for SUBSYSTEMS=="ccwgroup".

Signed-off-by: David Woodhouse 
Signed-off-by: David S. Miller

[ETH]: Combine format_addr() with print_mac().

2008-01-28T23:00:05+00:00

print_mac() used many most net drivers and format_addr() used by
net-sysfs.c are very similar and they can be intergrated.

format_addr() is also identically redefined in the qla4xxx iscsi
driver.

Export a new function sysfs_format_mac() to be used by net-sysfs,
qla4xxx and others in the future.  Both print_mac() and
sysfs_format_mac() call _format_mac_addr() to do the formatting.

Changed print_mac() to use unsigned char * to be consistent with
net_device struct's dev_addr.  Added buffer length overrun checking
as suggested by Joe Perches.

Signed-off-by: Michael Chan 
Signed-off-by: David S. Miller

[NET]: Nicer WARN_ON in netstat_show

2008-01-28T22:55:10+00:00

The

        if (statement)
                WARN_ON(1);

looks much better as

        WARN_ON(statement);

Signed-off-by: Pavel Emelyanov 
Signed-off-by: Herbert Xu 
Signed-off-by: David S. Miller

[NET]: Remove in-code externs for some functions from net/core/dev.c

2007-10-24T04:27:56+00:00

Inconsistent prototype and real type for functions may have worse
consequences, than those for variables, so move them into a header.

Since they are used privately in net/core, make this file reside in
the same place.

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

Driver core: change add_uevent_var to use a struct

2007-10-12T21:51:01+00:00

This changes the uevent buffer functions to use a struct instead of a
long list of parameters. It does no longer require the caller to do the
proper buffer termination and size accounting, which is currently wrong
in some places. It fixes a known bug where parts of the uevent
environment are overwritten because of wrong index calculations.

Many thanks to Mathieu Desnoyers for finding bugs and improving the
error handling.

Signed-off-by: Kay Sievers 
Cc: Mathieu Desnoyers 
Cc: Cornelia Huck 
Signed-off-by: Greg Kroah-Hartman