linux-stable.git/net/core/dev.c, branch linux-2.6.22.y

NET: Share correct feature code between bridging and bonding

2007-08-31T06:01:00+00:00

[NET]: Share correct feature code between bridging and bonding

http://bugzilla.kernel.org/show_bug.cgi?id=8797 shows that the
bonding driver may produce bogus combinations of the checksum
flags and SG/TSO.

For example, if you bond devices with NETIF_F_HW_CSUM and
NETIF_F_IP_CSUM you'll end up with a bonding device that
has neither flag set.  If both have TSO then this produces
an illegal combination.

The bridge device on the other hand has the correct code to
deal with this.

In fact, the same code can be used for both.  So this patch
moves that logic into net/core/dev.c and uses it for both
bonding and bridging.

In the process I've made small adjustments such as only
setting GSO_ROBUST if at least one constituent device
supports it.

Signed-off-by: Herbert Xu 
Acked-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

[NET]: Re-enable irqs before pushing pending DMA requests

2007-06-24T06:09:23+00:00

This moves the local_irq_enable() call in net_rx_action() to before
calling the CONFIG_NET_DMA's dma_async_memcpy_issue_pending() rather
than after.  This shortens the irq disabled window and allows for DMA
drivers that need to do their own irq hold.

Signed-off-by: Shannon Nelson 
Signed-off-by: David S. Miller

[NET]: Avoid duplicate netlink notification when changing link state

2007-06-07T20:40:56+00:00

When changing the link state from userspace not affecting any other
flags. Two duplicate notification are being sent, once as action
in the NETDEV_UP/NETDEV_DOWN notification chain and a second time
when comparing old and new device flags after the change has been
completed. Although harmless, the duplicates should be avoided.

Signed-off-by: Thomas Graf 
Signed-off-by: David S. Miller

[NET]: Fix race condition about network device name allocation.

2007-05-19T22:39:25+00:00

Kenji Kaneshige found this race between device removal and
registration.  On unregister it is possible for the old device to
exist, because sysfs file is still open.  A new device with 'eth%d'
will select the same name, but sysfs kobject register will fial.

The following changes the shutdown order slightly. It hold a removes
the sysfs entries earlier (on unregister_netdevice), but holds a
kobject reference.  Then when todo runs the actual last put free
happens.

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

[NET]: lockdep classes in register_netdevice

2007-05-17T21:20:28+00:00

After initializing dev->_xmit_lock register_netdevice()
sets lockdep class according to dev->type.

Idea of this patch - by David Miller.

Reported & tested by: "Yuriy N. Shkandybin" 
Signed-off-by: Jarek Poplawski 
Signed-off-by: David S. Miller

Add suspend-related notifications for CPU hotplug

2007-05-09T19:30:56+00:00

Since nonboot CPUs are now disabled after tasks and devices have been
frozen and the CPU hotplug infrastructure is used for this purpose, we need
special CPU hotplug notifications that will help the CPU-hotplug-aware
subsystems distinguish normal CPU hotplug events from CPU hotplug events
related to a system-wide suspend or resume operation in progress.  This
patch introduces such notifications and causes them to be used during
suspend and resume transitions.  It also changes all of the
CPU-hotplug-aware subsystems to take these notifications into consideration
(for now they are handled in the same way as the corresponding "normal"
ones).

[oleg@tv-sign.ru: cleanups]
Signed-off-by: Rafael J. Wysocki 
Cc: Gautham R Shenoy 
Cc: Pavel Machek 
Signed-off-by: Oleg Nesterov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[NET] net/core: Fix error handling

2007-05-07T07:33:18+00:00

Upon failure to register "ptype" procfs entry, "softnet_stat" was not
removed, and an incorrect attempt was made to remove the "ptype" entry.

Signed-off-by: Josef 'Jeff' Sipek 
Signed-off-by: David S. Miller

[NET]: Rework dev_base via list_head (v3)

2007-05-03T22:13:45+00:00

Cleanup of dev_base list use, with the aim to simplify making device
list per-namespace. In almost every occasion, use of dev_base variable
and dev->next pointer could be easily replaced by for_each_netdev
loop. A few most complicated places were converted to using
first_netdev()/next_netdev().

Signed-off-by: Pavel Emelianov 
Acked-by: Kirill Korotaev 
Signed-off-by: David S. Miller

[NET]: Add __dev_getfirstbyhwtype

2007-05-03T10:28:13+00:00

Add __dev_getfirstbyhwtype for callers that don't want a reference but
some data from the device and thus need to take the rtnl anyway.

Signed-off-by: Patrick McHardy 
Signed-off-by: David Howells 
Signed-off-by: David S. Miller

[NET]: Remove NETIF_F_INTERNAL_STATS, default to internal stats.

2007-04-29T04:04:03+00:00

Herbert Xu conviced me that a new flag was overkill; every driver
currently overrides get_stats, so we might as well make the internal
one the default.  If someone did fail to set get_stats, they would now
get all 0 stats instead of "No statistics available".

Signed-off-by: Rusty Russell 
Acked-by: Herbert Xu 
Signed-off-by: David S. Miller