litmus-rt-odroidx.git/drivers/s390/net, branch odroidx

net: fix NULL dereferences in check_peer_redir()

2012-02-13T19:06:13+00:00

[ Upstream commit d3aaeb38c40e5a6c08dd31a1b64da65c4352be36, along
  with dependent backports of commits:
     69cce1d1404968f78b177a0314f5822d5afdbbfb
     9de79c127cccecb11ae6a21ab1499e87aa222880
     218fa90f072e4aeff9003d57e390857f4f35513e
     580da35a31f91a594f3090b7a2c39b85cb051a12
     f7e57044eeb1841847c24aa06766c8290c202583
     e049f28883126c689cf95859480d9ee4ab23b7fa ]

Gergely Kalman reported crashes in check_peer_redir().

It appears commit f39925dbde778 (ipv4: Cache learned redirect
information in inetpeer.) added a race, leading to possible NULL ptr
dereference.

Since we can now change dst neighbour, we should make sure a reader can
safely use a neighbour.

Add RCU protection to dst neighbour, and make sure check_peer_redir()
can be called safely by different cpus in parallel.

As neighbours are already freed after one RCU grace period, this patch
should not add typical RCU penalty (cache cold effects)

Many thanks to Gergely for providing a pretty report pointing to the
bug.

Reported-by: Gergely Kalman 
Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

[S390] qdio: Split SBAL entry flags

2011-06-06T12:14:56+00:00

The qdio SBAL entry flag is made-up of four different values that are
independent of one another. Some of the bits are reserved by the
hardware and should not be changed by qdio. Currently all four values
are overwritten since the SBAL entry flag is defined as an u32.

Split the SBAL entry flag into four u8's as defined by the hardware
and don't touch the reserved bits.

Signed-off-by: Jan Glauber 
Signed-off-by: Martin Schwidefsky

qeth: use ndo_set_features callback for initial setup and recovery

2011-05-18T21:27:39+00:00

This patch uses the ndo_set_features callback during normal device
startup or recovery to turn on hardware RX checksum. Patch was done
with much help from Michal Miroslaw, thx!!!

Signed-off-by: Frank Blaschka 
Reviewed-by: Michał Mirosław 
Signed-off-by: David S. Miller

ctcm: get rid of compile warning

2011-05-13T18:55:20+00:00

-Wunused-but-set-variable generates compile warnings. The affected
variables are removed.

Signed-off-by: Ursula Braun 
Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller

lcs: get rid of compile warning

2011-05-13T18:55:20+00:00

-Wunused-but-set-variable generates a compile warning for lcs' tasklet
function. Invoked functions contain already error handling; thus
additional return code checking is not needed here.

Signed-off-by: Heiko Carstens 
Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller

claw: remove unused return code handling

2011-05-13T18:55:20+00:00

Remove unused return code handling. The claw driver is mostly dead, so
just make sure it keeps compiling without warnings.

Signed-off-by: Heiko Carstens 
Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller

qeth: add owner to ccw driver

2011-05-13T18:55:20+00:00

Fill in the owner of qeth's ccw device driver.

Signed-off-by: Sebastian Ott 
Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller

qeth: add OSA concurrent hardware trap

2011-05-13T18:55:20+00:00

This patch improves FFDC (first failure data capture) by requesting
a hardware trace in case the device driver, the hardware or a user
detects an error.

Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller

qeth: convert to hw_features part 2

2011-05-13T18:55:20+00:00

Set rx csum default to hw checksumming again.
Remove sysfs interface for rx csum (checksumming) and TSO (large_send).
With the new hw_features it does not work to keep the old sysfs
interface in parallel. Convert options.checksum_type to new hw_features.

Signed-off-by: Frank Blaschka 
Signed-off-by: David S. Miller

net: call dev_alloc_name from register_netdevice

2011-05-05T17:57:45+00:00

Force dev_alloc_name() to be called from register_netdevice() by
dev_get_valid_name(). That allows to remove multiple explicit
dev_alloc_name() calls.

The possibility to call dev_alloc_name in advance remains.

This also fixes veth creation regresion caused by
84c49d8c3e4abefb0a41a77b25aa37ebe8d6b743

Signed-off-by: Jiri Pirko 
Signed-off-by: David S. Miller