10 years agomv643xx_eth: checkpatch fixes
Lennert Buytenhek [Thu, 20 Nov 2008 11:57:16 +0000]
mv643xx_eth: checkpatch fixes

Fix up a couple of coding style issues caught by checkpatch.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: ip_sockglue.c add static, annotate ports' endianness
Harvey Harrison [Thu, 20 Nov 2008 09:54:27 +0000]
net: ip_sockglue.c add static, annotate ports' endianness

Fixes sparse warnings:
net/ipv4/ip_sockglue.c:146:15: warning: incorrect type in assignment (different base types)
net/ipv4/ip_sockglue.c:146:15:    expected restricted __be16 [assigned] [usertype] sin_port
net/ipv4/ip_sockglue.c:146:15:    got unsigned short [unsigned] [short] [usertype] <noident>
net/ipv4/ip_sockglue.c:130:6: warning: symbol 'ip_cmsg_recv_dstaddr' was not declared. Should it be static?

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agomyri10ge: remove hardcoded sram_size
Brice Goglin [Thu, 20 Nov 2008 09:50:28 +0000]
myri10ge: remove hardcoded sram_size

Removes the use of a hardcoded sram_size, determine string_spec
location from the MCP header instead.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agomyri10ge: fix per-slice rx/tx_dropped counters
Brice Goglin [Thu, 20 Nov 2008 09:50:04 +0000]
myri10ge: fix per-slice rx/tx_dropped counters

Properly attribute transmit and receive drops by incrementing the
per-slice counter.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonetdev/smc91x: unify Blackfin code a bit and use proper read/write functions
Mike Frysinger [Mon, 17 Nov 2008 21:23:40 +0000]
netdev/smc91x: unify Blackfin code a bit and use proper read/write functions

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agodccp: Fix bracing in dccp_feat_list_lookup.
Gerrit Renker [Thu, 20 Nov 2008 09:03:08 +0000]
dccp: Fix bracing in dccp_feat_list_lookup.

From: Gerrit Renker <gerrit@erg.abdn.ac.uk>

Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonetdevice hamradio: Convert directly reference of netdev->priv
Wang Chen [Thu, 20 Nov 2008 09:02:05 +0000]
netdevice hamradio: Convert directly reference of netdev->priv

Since all the memory, which pointed by netdev->priv, are allocated in
advance instead of by alloc_netdev().  Use netdev->ml_priv to point to
those memory.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonetdevice: 82596: Convert netdev->priv to netdev_priv
Wang Chen [Thu, 20 Nov 2008 09:01:00 +0000]
netdevice: 82596: Convert netdev->priv to netdev_priv

1. When alloc_etherdev(), no memory be allocated to netdev->priv.
2. And it's need to get a whole page for priv.

For these reasons, use netdev->ml_priv to point to the page is the
best method to convert directly reference of netdev->priv.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agofilter: add SKF_AD_NLATTR_NEST to look for nested attributes
Pablo Neira Ayuso [Thu, 20 Nov 2008 08:49:27 +0000]
filter: add SKF_AD_NLATTR_NEST to look for nested attributes

SKF_AD_NLATTR allows us to find the first matching attribute in a
stream of netlink attributes from one offset to the end of the
netlink message. This is not suitable to look for a specific
matching inside a set of nested attributes.

For example, in ctnetlink messages, if we look for the CTA_V6_SRC
attribute in a message that talks about an IPv4 connection,
SKF_AD_NLATTR returns the offset of CTA_STATUS which has the same
value of CTA_V6_SRC but outside the nest. To differenciate
CTA_STATUS and CTA_V6_SRC, we would have to make assumptions on the
size of the attribute and the usual offset, resulting in horrible
BSF code.

This patch adds SKF_AD_NLATTR_NEST, which is a variant of
SKF_AD_NLATTR, that looks for an attribute inside the limits of
a nested attributes, but not further.

This patch validates that we have enough room to look for the
nested attributes - based on a suggestion from Patrick McHardy.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoigb: Fix tx/rx_ring_count parameters for igb on suspend/resume/ring resize
Alexander Duyck [Thu, 20 Nov 2008 08:48:10 +0000]
igb: Fix tx/rx_ring_count parameters for igb on suspend/resume/ring resize

When suspending the device the ring structure is freed which causes it to
loose track of the count.  To resolve this we need to move the ring count
outside of the ring structure and store it in the adapter struct.

In addition to resolving the suspend/resume issue this patch also addresses
issues seen in the event of memory allocation errors causing uneven ring
sizes on multiple queues.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoigb: simplify swap in clean_rx_irq if using packet split
Alexander Duyck [Thu, 20 Nov 2008 08:47:34 +0000]
igb: simplify swap in clean_rx_irq if using packet split

This update replaces the xchg calls that were added with a pair of
assignments as there is no need for the xchg calls and they were found to
cause issues on some architectures.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoigb: update name to reflect new hardware
Alexander Duyck [Thu, 20 Nov 2008 08:46:57 +0000]
igb: update name to reflect new hardware

This patch adds the 82576 device to the description for igb in Kconfig.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: listening_hash get a spinlock per bucket
Eric Dumazet [Thu, 20 Nov 2008 08:40:07 +0000]
net: listening_hash get a spinlock per bucket

This patch prepares RCU migration of listening_hash table for
TCP/DCCP protocols.

listening_hash table being small (32 slots per protocol), we add
a spinlock for each slot, instead of a single rwlock for whole table.

This should reduce hold time of readers, and writers concurrency.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoacenic: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:28:46 +0000]
acenic: convert to net_device_ops

Convert this driver to network device ops. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoniu: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:27:43 +0000]
niu: convert to net_device_ops

Convert this driver to network device ops. Compile tested only (give me hw!)

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoforcedeth: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:26:51 +0000]
forcedeth: convert to net_device_ops

Convert this driver to network device ops. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotg3: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:25:36 +0000]
tg3: convert to net_device_ops

Convert this driver to network device ops.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoixgb: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:24:29 +0000]
ixgb: convert to net_device_ops

Convert this driver to network device ops. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoenic: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:23:26 +0000]
enic: convert to net_device_ops

Convert this driver to network device ops. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoppp: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:22:30 +0000]
ppp: convert to net_device_ops

Convert this driver to network device ops. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoe100: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:21:53 +0000]
e100: convert to net_device_ops

Convert to new network device ops interface. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoigb: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:20:44 +0000]
igb: convert to net_device_ops

Convert to new network device ops interface. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agovia-velocity: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:19:33 +0000]
via-velocity: convert to net_device_ops

Convert this driver to network device ops. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoe1000: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:18:22 +0000]
e1000: convert to net_device_ops

Convert to new network device ops interface.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agocxgb2: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:17:06 +0000]
cxgb2: convert to net_device_ops

Convert this driver to network device ops. Compile teseted only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agocxgb3: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:15:39 +0000]
cxgb3: convert to net_device_ops

Convert this driver to network device ops. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoatlx: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:14:17 +0000]
atlx: convert to net_device_ops

Convert this driver to network device ops. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoatl1e: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:12:06 +0000]
atl1e: convert to net_device_ops

Convert this driver to network device ops. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agotun: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:10:37 +0000]
tun: convert to net_device_ops

Convert the TUN/TAP tunnel driver to net_device_ops.
Split the ops in two, and retain compatability.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years ago8139: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:09:07 +0000]
8139: convert to net_device_ops

Convert to new network device ops interface.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agor8169: convert to net_device_ops
Francois Romieu [Thu, 20 Nov 2008 06:05:25 +0000]
r8169: convert to net_device_ops

Based upon a patch by Stephen Hemminger.

Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoskge: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 06:01:26 +0000]
skge: convert to net_device_ops

Convert to new network device ops interface.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agosky2: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 05:59:54 +0000]
sky2: convert to net_device_ops

Convert to new network device ops interface. Slight additional complexity
here because the second port does not allow netpoll and therefore has
different virtual function table.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoe1000e: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 05:57:48 +0000]
e1000e: convert to net_device_ops

Convert e1000e to network device ops.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>

10 years agobonding: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 05:56:05 +0000]
bonding: convert to net_device_ops

Convert to net_device_ops table.
Note: for some operations move error checking into generic networking
layer (rather than looking at pointers in bonding).

A couple of gratituous style cleanups to get rid of extra {}

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agovlan: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 05:53:47 +0000]
vlan: convert to net_device_ops

Convert vlan devices and function pointers to net_device_ops.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoip: convert to net_device_ops for ioctl
Stephen Hemminger [Thu, 20 Nov 2008 05:52:05 +0000]
ip: convert to net_device_ops for ioctl

Convert to net_device_ops function table pointer for ioctl.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agomacvlan: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 05:51:06 +0000]
macvlan: convert to net_device_ops

Convert to net_device_ops function table.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoveth: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 05:50:10 +0000]
veth: convert to net_device_ops

Convert to net_device_ops function table.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agobridge: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 05:49:00 +0000]
bridge: convert to net_device_ops

Convert to net_device_ops function table.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoifb: convert to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 05:47:07 +0000]
ifb: convert to net_device_ops

Convert to new network device ops interface.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonetdev: convert loopback to net_device_ops
Stephen Hemminger [Thu, 20 Nov 2008 05:46:18 +0000]
netdev: convert loopback to net_device_ops

First device to convert over is the loopback device.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonetdev: expose ethernet address primitives
Stephen Hemminger [Thu, 20 Nov 2008 06:42:31 +0000]
netdev: expose ethernet address primitives

When ethernet devices are converted, the function pointer setup
by eth_setup() need to be done during intialization.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonetdev: introduce dev_get_stats()
Stephen Hemminger [Thu, 20 Nov 2008 05:40:23 +0000]
netdev: introduce dev_get_stats()

In order for the network device ops get_stats call to be immutable, the handling
of the default internal network device stats block has to be changed. Add a new
helper function which replaces the old use of internal_get_stats.

Note: change return code to make it clear that the caller should not
go changing the returned statistics.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonetdev: network device operations infrastructure
Stephen Hemminger [Thu, 20 Nov 2008 05:32:24 +0000]
netdev: network device operations infrastructure

This patch changes the network device internal API to move adminstrative
operations out of the network device structure and into a separate structure.

This patch involves some hackery to maintain compatablity between the
new and old model, so all 300+ drivers don't have to be changed at once.
For drivers that aren't converted yet, the netdevice_ops virt function list
still resides in the net_device structure. For old protocols, the new
net_device_ops are copied out to the old net_device pointers.

After the transistion is completed the nag message can be changed to
an WARN_ON, and the compatiablity code can be made configurable.

Some function pointers aren't moved:
* destructor can't be in net_device_ops because
  it may need to be referenced after the module is unloaded.
* neighbor setup is manipulated in a couple of places that need special
  consideration
* hard_start_xmit is in the fast path for transmit.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: af_unix should use KERN_INFO instead of KERN_DEBUG
Eric Dumazet [Wed, 19 Nov 2008 23:48:09 +0000]
net: af_unix should use KERN_INFO instead of KERN_DEBUG

As spotted by Joe Perches, we should use KERN_INFO in unix_sock_destructor()

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agodrivers/s390/ - csum_partial - remove unnecessary casts
Joe Perches [Wed, 19 Nov 2008 23:45:15 +0000]
drivers/s390/ - csum_partial - remove unnecessary casts

    The first argument to csum_partial is const void *
    casts to char/u8 * are not necessary

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoinclude/net net/ - csum_partial - remove unnecessary casts
Joe Perches [Wed, 19 Nov 2008 23:44:53 +0000]
include/net net/ - csum_partial - remove unnecessary casts

The first argument to csum_partial is const void *
casts to char/u8 * are not necessary

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: inet_diag_handler structs can be const
Eric Dumazet [Wed, 19 Nov 2008 23:43:27 +0000]
net: inet_diag_handler structs can be const

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: make /proc/net/protocols namespace aware
Eric Dumazet [Wed, 19 Nov 2008 23:14:01 +0000]
net: make /proc/net/protocols namespace aware

Converting /proc/net/protocols to be namespace aware is quite easy
and permits us to use sock_prot_inuse_get().

This provides seperate counters for each protocol. For example
we can really count TCPv6 sockets and TCPv4 sockets, while previously,
we had the same value, and this value was not namespace aware.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: af_packet should update its inuse counter
Eric Dumazet [Wed, 19 Nov 2008 22:25:35 +0000]
net: af_packet should update its inuse counter

This patch is a preparation to namespace conversion of /proc/net/protocols

In order to have relevant information for PACKET protocols, we should use
sock_prot_inuse_add() to update a (percpu and pernamespace) counter of
inuse sockets.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
David S. Miller [Wed, 19 Nov 2008 07:38:23 +0000]
Merge branch 'master' of /linux/kernel/git/davem/net-2.6

Conflicts:

drivers/isdn/i4l/isdn_net.c
fs/cifs/connect.c

10 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Tue, 18 Nov 2008 16:07:51 +0000]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  block: hold extra reference to bio in blk_rq_map_user_iov()
  relay: fix cpu offline problem
  Release old elevator on change elevator
  block: fix boot failure with CONFIG_DEBUG_BLOCK_EXT_DEVT=y and nash
  block/md: fix md autodetection
  block: make add_partition() return pointer to hd_struct
  block: fix add_partition() error path

10 years agosuspend: use WARN not WARN_ON to print the message
Arjan van de Ven [Tue, 18 Nov 2008 14:56:51 +0000]
suspend: use WARN not WARN_ON to print the message

By using WARN(), kerneloops.org can collect which component is causing
the delay and make statistics about that. suspend_test_finish() is
currently the number 2 item but unless we can collect who's causing
it we're not going to be able to fix the hot topic ones..

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoMerge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Tue, 18 Nov 2008 16:06:35 +0000]
Merge branch 'tracing-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  kernel/profile.c: fix section mismatch warning
  function tracing: fix wrong pos computing when read buffer has been fulfilled
  tracing: fix mmiotrace resizing crash
  ring-buffer: no preempt for sched_clock()
  ring-buffer: buffer record on/off switch

10 years agoMerge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Tue, 18 Nov 2008 16:06:21 +0000]
Merge branch 'sched-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  cpuset: fix regression when failed to generate sched domains
  sched, signals: fix the racy usage of ->signal in account_group_xxx/run_posix_cpu_timers
  sched: fix kernel warning on /proc/sched_debug access
  sched: correct sched-rt-group.txt pathname in init/Kconfig

10 years agoMerge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Tue, 18 Nov 2008 16:06:00 +0000]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  swiotlb: use coherent_dma_mask in alloc_coherent
  MAINTAINERS: remove me as RAID maintainer

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney...
Linus Torvalds [Tue, 18 Nov 2008 16:05:43 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/cooloney/blackfin-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6:
  Blackfin arch: fix a broken define in dma-mapping
  Blackfin arch: fix bug - Turn on DEBUG_DOUBLEFAULT, booting SMP kernel crash
  Blackfin arch: fix bug - shared lib function in L2 failed be called
  Blackfin arch: fix incorrect limit check for bf54x check_gpio
  Blackfin arch: fix bug - Cpufreq assumes clocks in kHz and not Hz.
  Blackfin arch: dont warn when running a kernel on the oldest supported silicon
  Blackfin arch: fix bug - kernel build with write back policy fails to be booted up
  Blackfin arch: fix bug - dmacopy test case fail on all platform
  Blackfin arch: Fix typo when adding CONFIG_DEBUG_VERBOSE
  Blackfin arch: don't copy bss when copying L1
  Blackfin arch: fix bug - Fail to boot jffs2 kernel for BF561 with SMP patch
  Blackfin arch: handle case of d_path() returning error in decode_address()

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Tue, 18 Nov 2008 16:05:05 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Fix resume of GPIO unsol event for STAC/IDT
  ALSA: hda - Add quirks for HP Pavilion DV models
  ALSA: hda - Fix GPIO initialization in patch_stac92hd71bxx()
  ALSA: hda - Check model type instead of SSID in patch_92hd71bxx()
  ALSA: sound/pci/pcxhr/pcxhr.c: introduce missing kfree and pci_disable_device
  ALSA: hda: STAC_VREF_EVENT value change
  ALSA: hda - Missing NULL check in hda_beep.c
  ALSA: hda - Add digital beep playback switch for STAC/IDT codecs

10 years agoblock: hold extra reference to bio in blk_rq_map_user_iov()
Jens Axboe [Tue, 18 Nov 2008 14:07:05 +0000]
block: hold extra reference to bio in blk_rq_map_user_iov()

If the size passed in is OK but we end up mapping too many segments,
we call the unmap path directly like from IO completion. But from IO
completion we have an extra reference to the bio, so this error case
goes OOPS when it attempts to free and already free bio.

Fix it by getting an extra reference to the bio before calling the
unmap failure case.

Reported-by: Petr Vandrovec <vandrove@vc.cvut.cz>

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agorelay: fix cpu offline problem
Lai Jiangshan [Fri, 14 Nov 2008 09:44:59 +0000]
relay: fix cpu offline problem

relay_open() will close allocated buffers when failed.
but if cpu offlined, some buffer will not be closed.
this patch fixed it.

and did cleanup for relay_reset() too.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoRelease old elevator on change elevator
Zhaolei [Fri, 14 Nov 2008 08:44:33 +0000]
Release old elevator on change elevator

We should release old elevator when change to use a new one.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: fix boot failure with CONFIG_DEBUG_BLOCK_EXT_DEVT=y and nash
Zhang, Yanmin [Fri, 14 Nov 2008 07:26:30 +0000]
block: fix boot failure with CONFIG_DEBUG_BLOCK_EXT_DEVT=y and nash

We run into system boot failure with kernel 2.6.28-rc. We found it on a
couple of machines, including T61 notebook, nehalem machine, and another
HPC NX6325 notebook.  All the machines use FedoraCore 8 or FedoraCore 9.
With kernel prior to 2.6.28-rc, system boot doesn't fail.

I debug it and locate the root cause. Pls. see
http://bugzilla.kernel.org/show_bug.cgi?id=11899
https://bugzilla.redhat.com/show_bug.cgi?id=471517

As a matter of fact, there are 2 bugs.

1)root=/dev/sda1, system boot randomly fails. Mostly, boot for 5 times
and fails once. nash has a bug. Some of its functions misuse return
value 0.  Sometimes, 0 means timeout and no uevent available. Sometimes,
0 means nash gets an uevent, but the uevent isn't block-related (for
exmaple, usb). If by coincidence, kernel tells nash that uevents are
available, but kernel also set timeout, nash might stops collecting
other uevents in queue if current uevent isn't block-related.  I work
out a patch for nash to fix it.
http://bugzilla.kernel.org/attachment.cgi?id=18858

2) root=LABEL=/, system always can't boot. initrd init reports
switchroot fails. Here is an executation branch of nash when booting:
    (1) nash read /sys/block/sda/dev; Assume major is 8 (on my desktop)
    (2) nash query /proc/devices with the major number; It found line
"8 sd";
    (3) nash use 'sd' to search its own probe table to find device (DISK)
type for the device and add it to its own list;
    (4) Later on, it probes all devices in its list to get filesystem
labels; scsi register "8 sd" always.

When major is 259, nash fails to find the device(DISK) type. I enables
CONFIG_DEBUG_BLOCK_EXT_DEVT=y when compiling kernel, so 259 is picked up
for device /dev/sda1, which causes nash to fail to find device (DISK)
type.

To fixing issue 2), I create a patch for nash and another patch for
kernel.

http://bugzilla.kernel.org/attachment.cgi?id=18859
http://bugzilla.kernel.org/attachment.cgi?id=18837

Below is the patch for kernel 2.6.28-rc4. It registers blkext, a new
block device in proc/devices.

With 2 patches on nash and 1 patch on kernel, I boot my machines for
dozens of times without failure.

Signed-off-by Zhang Yanmin <yanmin.zhang@linux.intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock/md: fix md autodetection
Tejun Heo [Mon, 10 Nov 2008 06:30:47 +0000]
block/md: fix md autodetection

Block ext devt conversion missed md_autodetect_dev() call in
rescan_partitions() leaving md autodetect unable to see partitions.
Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: make add_partition() return pointer to hd_struct
Tejun Heo [Mon, 10 Nov 2008 06:29:58 +0000]
block: make add_partition() return pointer to hd_struct

Make add_partition() return pointer to the new hd_struct on success
and ERR_PTR() value on failure.  This change will be used to fix md
autodetection bug.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoblock: fix add_partition() error path
Tejun Heo [Mon, 10 Nov 2008 06:28:59 +0000]
block: fix add_partition() error path

Partition stats structure was not freed on devt allocation failure
path.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoMerge branches 'topic/fix/hda' and 'topic/fix/misc' into for-linus
Takashi Iwai [Tue, 18 Nov 2008 12:49:39 +0000]
Merge branches 'topic/fix/hda' and 'topic/fix/misc' into for-linus

10 years agoALSA: hda - Fix resume of GPIO unsol event for STAC/IDT
Takashi Iwai [Tue, 18 Nov 2008 09:55:36 +0000]
ALSA: hda - Fix resume of GPIO unsol event for STAC/IDT

Use cached write for setting the GPIO unsolicited event mask to be
restored properly at resume.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

10 years agoALSA: hda - Add quirks for HP Pavilion DV models
Takashi Iwai [Tue, 18 Nov 2008 09:48:41 +0000]
ALSA: hda - Add quirks for HP Pavilion DV models

Added the quirk entries for HP Pavilion DV5 and DV7 with model=hp-m4.

Reference: Novell bnc#445321, bnc#445161
https://bugzilla.novell.com/show_bug.cgi?id=445321
https://bugzilla.novell.com/show_bug.cgi?id=445161

Signed-off-by: Takashi Iwai <tiwai@suse.de>

10 years agoBlackfin arch: fix a broken define in dma-mapping
Mike Frysinger [Tue, 18 Nov 2008 09:48:22 +0000]
Blackfin arch: fix a broken define in dma-mapping

dma_mapping_error is an actual function, so fix broken define with a
real inline stub

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

10 years agoBlackfin arch: fix bug - Turn on DEBUG_DOUBLEFAULT, booting SMP kernel crash
Graf Yang [Tue, 18 Nov 2008 09:48:22 +0000]
Blackfin arch: fix bug - Turn on DEBUG_DOUBLEFAULT, booting SMP kernel crash

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

10 years agoALSA: hda - Fix GPIO initialization in patch_stac92hd71bxx()
Takashi Iwai [Tue, 18 Nov 2008 09:45:15 +0000]
ALSA: hda - Fix GPIO initialization in patch_stac92hd71bxx()

Fixed the GPIO mask and co initialization in patch_stac92hd71bxx()
so that the gpio_maks for HP_M4 model is set properly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

10 years agokernel/profile.c: fix section mismatch warning
Rakib Mullick [Tue, 18 Nov 2008 04:15:24 +0000]
kernel/profile.c: fix section mismatch warning

Impact: fix section mismatch warning in kernel/profile.c

Here, profile_nop function has been called from a non-init function
create_hash_tables(void). Which generetes a section mismatch warning.
Previously, create_hash_tables(void) was a init function. So, removing
__init from create_hash_tables(void) requires profile_nop to be
non-init.

This patch makes profile_nop function inline and fixes the
following warning:

 WARNING: vmlinux.o(.text+0x6ebb6): Section mismatch in reference from
 the function create_hash_tables() to the function
 .init.text:profile_nop()
 The function create_hash_tables() references
 the function __init profile_nop().
 This is often because create_hash_tables lacks a __init
 annotation or the annotation of profile_nop is wrong.

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agocpuset: fix regression when failed to generate sched domains
Li Zefan [Tue, 18 Nov 2008 06:02:03 +0000]
cpuset: fix regression when failed to generate sched domains

Impact: properly rebuild sched-domains on kmalloc() failure

When cpuset failed to generate sched domains due to kmalloc()
failure, the scheduler should fallback to the single partition
'fallback_doms' and rebuild sched domains, but now it only
destroys but not rebuilds sched domains.

The regression was introduced by:

| commit dfb512ec4834116124da61d6c1ee10fd0aa32bd6
| Author: Max Krasnyansky <maxk@qualcomm.com>
| Date:   Fri Aug 29 13:11:41 2008 -0700
|
|    sched: arch_reinit_sched_domains() must destroy domains to force rebuild

After the above commit, partition_sched_domains(0, NULL, NULL) will
only destroy sched domains and partition_sched_domains(1, NULL, NULL)
will create the default sched domain.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Max Krasnyansky <maxk@qualcomm.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Tue, 18 Nov 2008 04:53:31 +0000]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  prevent cifs_writepages() from skipping unwritten pages
  Fixed parsing of mount options when doing DFS submount
  [CIFS] Fix check for tcon seal setting and fix oops on failed mount from earlier patch
  [CIFS] Fix build break
  cifs: reinstate sharing of tree connections
  [CIFS] minor cleanup to cifs_mount
  cifs: reinstate sharing of SMB sessions sans races
  cifs: disable sharing session and tcon and add new TCP sharing code
  [CIFS] clean up server protocol handling
  [CIFS] remove unused list, add new cifs sock list to prepare for mount/umount fix
  [CIFS] Fix cifs reconnection flags
  [CIFS] Can't rely on iov length and base when kernel_recvmsg returns error

10 years agoprevent cifs_writepages() from skipping unwritten pages
Dave Kleikamp [Tue, 18 Nov 2008 03:49:05 +0000]
prevent cifs_writepages() from skipping unwritten pages

Fixes a data corruption under heavy stress in which pages could be left
dirty after all open instances of a inode have been closed.

In order to write contiguous pages whenever possible, cifs_writepages()
asks pagevec_lookup_tag() for more pages than it may write at one time.
Normally, it then resets index just past the last page written before calling
pagevec_lookup_tag() again.

If cifs_writepages() can't write the first page returned, it wasn't resetting
index, and the next call to pagevec_lookup_tag() resulted in skipping all of
the pages it previously returned, even though cifs_writepages() did nothing
with them.  This can result in data loss when the file descriptor is about
to be closed.

This patch ensures that index gets set back to the next returned page so
that none get skipped.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Cc: Shirish S Pargaonkar <shirishp@us.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

10 years agoFixed parsing of mount options when doing DFS submount
Igor Mammedov [Thu, 23 Oct 2008 09:58:42 +0000]
Fixed parsing of mount options when doing DFS submount

Since these hit the same routines, and are relatively small, it is easier to review
them as one patch.

Fixed incorrect handling of the last option in some cases
Fixed prefixpath handling convert path_consumed into host depended string length (in bytes)
Use non default separator if it is provided in the original mount options

Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Igor Mammedov <niallain@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

10 years agoRemove -mno-spe flags as they dont belong
Kumar Gala [Sat, 15 Nov 2008 18:02:34 +0000]
Remove -mno-spe flags as they dont belong

For some unknown reason at Steven Rostedt added in disabling of the SPE
instruction generation for e500 based PPC cores in commit
6ec562328fda585be2d7f472cfac99d3b44d362a.

We are removing it because:

1. It generates e500 kernels that don't work
2. its not the correct set of flags to do this
3. we handle this in the arch/powerpc/Makefile already
4. its unknown in talking to Steven why he did this

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Tested-and-Acked-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoMerge branch 'for-linus' of git://git.o-hand.com/linux-mfd
Linus Torvalds [Mon, 17 Nov 2008 18:45:39 +0000]
Merge branch 'for-linus' of git://git.o-hand.com/linux-mfd

* 'for-linus' of git://git.o-hand.com/linux-mfd:
  mfd: Correct WM8350 I2C return code usage
  mfd: fix event masking for da9030

10 years ago[CIFS] Fix check for tcon seal setting and fix oops on failed mount from earlier...
Steve French [Mon, 17 Nov 2008 16:03:00 +0000]
[CIFS] Fix check for tcon seal setting and fix oops on failed mount from earlier patch

set tcon->ses earlier

If the inital tree connect fails, we'll end up calling cifs_put_smb_ses
with a NULL pointer. Fix it by setting the tcon->ses earlier.

Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
Linus Torvalds [Mon, 17 Nov 2008 15:54:47 +0000]
Merge git://git./linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  rtc: rtc-sun4v fixes, revised
  sparc: Fix tty compile warnings.
  sparc: struct device - replace bus_id with dev_name(), dev_set_name()

10 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Mon, 17 Nov 2008 15:53:25 +0000]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits)
  rtnetlink: propagate error from dev_change_flags in do_setlink()
  isdn: remove extra byteswap in isdn_net_ciscohdlck_slarp_send_reply
  Phonet: refuse to send bigger than MTU packets
  e1000e: fix IPMI traffic
  e1000e: fix warn_on reload after phy_id error
  phy: fix phy address bug
  e100: fix dma error in direction for mapping
  igb: use dev_printk instead of printk
  qla3xxx: Cleanup: Fix link print statements.
  igb: Use device_set_wakeup_enable
  e1000: Use device_set_wakeup_enable
  e1000e: Use device_set_wakeup_enable
  via-velocity: enable perfect filtering for multicast packets
  phy: Add support for Marvell 88E1118 PHY
  mlx4_en: Pause parameters per port
  phylib: fix premature freeing of struct mii_bus
  atl1: Do not enumerate options unsupported by chip
  atl1e: fix broken multicast by removing unnecessary crc inversion
  gianfar: Fix DMA unmap invocations
  net/ucc_geth: Fix oops in uec_get_ethtool_stats()
  ...

10 years agosched, signals: fix the racy usage of ->signal in account_group_xxx/run_posix_cpu_timers
Oleg Nesterov [Mon, 17 Nov 2008 14:39:47 +0000]
sched, signals: fix the racy usage of ->signal in account_group_xxx/run_posix_cpu_timers

Impact: fix potential NULL dereference

Contrary to ad474caca3e2a0550b7ce0706527ad5ab389a4d4 changelog, other
acct_group_xxx() helpers can be called after exit_notify() by timer tick.
Thanks to Roland for pointing out this. Somehow I missed this simple fact
when I read the original patch, and I am afraid I confused Frank during
the discussion. Sorry.

Fortunately, these helpers work with current, we can check ->exit_state
to ensure that ->signal can't go away under us.

Also, add the comment and compiler barrier to account_group_exec_runtime(),
to make sure we load ->signal only once.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agonet: sctp should update its inuse counter
Eric Dumazet [Mon, 17 Nov 2008 10:41:00 +0000]
net: sctp should update its inuse counter

This patch is a preparation to namespace conversion of /proc/net/protocols

In order to have relevant information for SCTP protocols, we should use
sock_prot_inuse_add() to update a (percpu and pernamespace) counter of
inuse sockets.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: af_unix should update its inuse counter
Eric Dumazet [Mon, 17 Nov 2008 10:38:49 +0000]
net: af_unix should update its inuse counter

This patch is a preparation to namespace conversion of /proc/net/protocols

In order to have relevant information for UNIX protocol, we should use
sock_prot_inuse_add() to update a (percpu and pernamespace) counter of
inuse sockets.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoswiotlb: use coherent_dma_mask in alloc_coherent
FUJITA Tomonori [Mon, 17 Nov 2008 07:24:34 +0000]
swiotlb: use coherent_dma_mask in alloc_coherent

Impact: fix DMA buffer allocation coherency bug in certain configs

This patch fixes swiotlb to use dev->coherent_dma_mask in
swiotlb_alloc_coherent().

coherent_dma_mask is a subset of dma_mask (equal to it most of
the time), enumerating the address range that a given device
is able to DMA to/from in a cache-coherent way.

But currently, swiotlb uses dev->dma_mask in alloc_coherent()
implicitly via address_needs_mapping(), but alloc_coherent is really
supposed to use coherent_dma_mask.

This bug could break drivers that uses smaller coherent_dma_mask than
dma_mask (though the current code works for the majority that use the
same mask for coherent_dma_mask and dma_mask).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: tony.luck@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agonet: af_unix can make unix_nr_socks visbile in /proc
Eric Dumazet [Mon, 17 Nov 2008 08:00:30 +0000]
net: af_unix can make unix_nr_socks visbile in /proc

Currently, /proc/net/protocols displays socket counts only for TCP/TCPv6
protocols

We can provide unix_nr_socks for free here, this counter being
already maintained in af_unix

Before patch :

# grep UNIX /proc/net/protocols
UNIX       428     -1      -1   NI       0   yes  kernel

After patch :

# grep UNIX /proc/net/protocols
UNIX       428     98      -1   NI       0   yes  kernel

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agortnetlink: propagate error from dev_change_flags in do_setlink()
Johannes Berg [Mon, 17 Nov 2008 07:20:31 +0000]
rtnetlink: propagate error from dev_change_flags in do_setlink()

Unlike ifconfig, iproute doesn't report an error when setting
an interface up fails:

(example: put wireless network mac80211 interface into repeater mode
with iwconfig but do not set a peer MAC address, it should fail with
-ENOLINK)

without patch:
# ip link set wlan0 up ; echo $?
0
#

with patch:
# ip link set wlan0 up ; echo $?
RTNETLINK answers: Link has been severed
2
#

Propagate the return value from dev_change_flags() to fix this.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Tested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonetdevice chelsio: Convert directly reference of netdev->priv
Wang Chen [Mon, 17 Nov 2008 07:06:39 +0000]
netdevice chelsio: Convert directly reference of netdev->priv

Several netdev share one adapter here.
We use netdev->ml_priv of the netdevs point to the first netdev's priv.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoisdn: remove extra byteswap in isdn_net_ciscohdlck_slarp_send_reply
Harvey Harrison [Mon, 17 Nov 2008 07:03:45 +0000]
isdn: remove extra byteswap in isdn_net_ciscohdlck_slarp_send_reply

commit a144ea4b7a13087081ab5402fa9ad0bcfd249e67 [IPV4]: annotate struct in_ifaddr

Missed this extra byteswap as the isdn inlines hide the htonl inside
put_u32 which causes an extra byteswap on little-endian arches.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agoematch: simpler tcf_em_unregister()
Alexey Dobriyan [Mon, 17 Nov 2008 07:01:49 +0000]
ematch: simpler tcf_em_unregister()

Simply delete ops from list and let list debugging do the job.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agonet: Cleanup of af_unix
Eric Dumazet [Mon, 17 Nov 2008 06:58:44 +0000]
net: Cleanup of af_unix

This is a pure cleanup of net/unix/af_unix.c to meet current code
style standards

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agodccp: Tidy up setsockopt calls
Gerrit Renker [Mon, 17 Nov 2008 06:56:55 +0000]
dccp: Tidy up setsockopt calls

This splits the setsockopt calls into two groups, depending on whether an
integer argument (val) is required and whether routines being called do
their own locking.

Some options (such as setting the CCID) use u8 rather than int, so that for
these the test with regard to integer-sizeof can not be used.

The second switch-case statement now only has those statements which need
locking and which make use of `val'.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Reviewed-by: Eugene Teo <eugeneteo@kernel.sg>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agodccp: Deprecate Ack Ratio sysctl
Gerrit Renker [Mon, 17 Nov 2008 06:55:08 +0000]
dccp: Deprecate Ack Ratio sysctl

This patch deprecates the Ack Ratio sysctl, since
 * Ack Ratio is entirely ignored by CCID-3 and CCID-4,
 * Ack Ratio currently doesn't work in CCID-2 (i.e. is always set to 1);
 * even if it would work in CCID-2, there is no point for a user to change it:
   - Ack Ratio is constrained by cwnd (RFC 4341, 6.1.2),
   - if Ack Ratio > cwnd, the system resorts to spurious RTO timeouts
     (since waiting for Acks which will never arrive in this window),
   - cwnd is not a user-configurable value.

The only reasonable place for Ack Ratio is to print it for debugging. It is
planned to do this later on, as part of e.g. dccp_probe.

With this patch Ack Ratio is now under full control of feature negotiation:
 * Ack Ratio is resolved as a dependency of the selected CCID;
 * if the chosen CCID supports it (i.e. CCID == CCID-2), Ack Ratio is set to
   the default of 2, following RFC 4340, 11.3 - "New connections start with Ack
   Ratio 2 for both endpoints";
 * what happens then is part of another patch set, since it concerns the
   dynamic update of Ack Ratio while the connection is in full flight.

Thanks to Tomasz Grobelny for discussion leading up to this patch.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agodccp: Feature negotiation for minimum-checksum-coverage
Gerrit Renker [Mon, 17 Nov 2008 06:53:48 +0000]
dccp: Feature negotiation for minimum-checksum-coverage

This provides feature negotiation for server minimum checksum coverage
which so far has been missing.

Since sender/receiver coverage values range only from 0...15, their
type has also been reduced in size from u16 to u4.

Feature-negotiation options are now generated for both sender and receiver
coverage, i.e. when the peer has `forgotten' to enable partial coverage
then feature negotiation will automatically enable (negotiate) the partial
coverage value for this connection.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agodccp: Deprecate old setsockopt framework
Gerrit Renker [Mon, 17 Nov 2008 06:51:23 +0000]
dccp: Deprecate old setsockopt framework

The previous setsockopt interface, which passed socket options via struct
dccp_so_feat, is complicated/difficult to use. Continuing to support it leads to
ugly code since the old approach did not distinguish between NN and SP values.

This patch removes the old setsockopt interface and replaces it with two new
functions to register NN/SP values for feature negotiation.
These are essentially wrappers around the internal __feat_register functions,
with checking added to avoid

 * wrong usage (type);
 * changing values while the connection is in progress.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agodccp: Mechanism to resolve CCID dependencies
Gerrit Renker [Mon, 17 Nov 2008 06:49:52 +0000]
dccp: Mechanism to resolve CCID dependencies

This adds a hook to resolve features whose value depends on the choice of
CCID. It is done at the server since it can only be done after the CCID
values have been negotiated; i.e. the client will add its CCID preference
list on the Change options sent in the Request, which will be reconciled
with the local preference list of the server.

The concept is documented on
http://www.erg.abdn.ac.uk/users/gerrit/dccp/notes/feature_negotiation/\
implementation_notes.html#ccid_dependencies

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Acked-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agovirtio_net: VIRTIO_NET_F_MSG_RXBUF (imprive rcv buffer allocation)
Mark McLoughlin [Mon, 17 Nov 2008 06:41:34 +0000]
virtio_net: VIRTIO_NET_F_MSG_RXBUF (imprive rcv buffer allocation)

If segmentation offload is enabled by the host, we currently allocate
maximum sized packet buffers and pass them to the host. This uses up
20 ring entries, allowing us to supply only 20 packet buffers to the
host with a 256 entry ring. This is a huge overhead when receiving
small packets, and is most keenly felt when receiving MTU sized
packets from off-host.

The VIRTIO_NET_F_MRG_RXBUF feature flag is set by hosts which support
using receive buffers which are smaller than the maximum packet size.
In order to transfer large packets to the guest, the host merges
together multiple receive buffers to form a larger logical buffer.
The number of merged buffers is returned to the guest via a field in
the virtio_net_hdr.

Make use of this support by supplying single page receive buffers to
the host. On receive, we extract the virtio_net_hdr, copy 128 bytes of
the payload to the skb's linear data buffer and adjust the fragment
offset to point to the remaining data. This ensures proper alignment
and allows us to not use any paged data for small packets. If the
payload occupies multiple pages, we simply append those pages as
fragments and free the associated skbs.

This scheme allows us to be efficient in our use of ring entries
while still supporting large packets. Benchmarking using netperf from
an external machine to a guest over a 10Gb/s network shows a 100%
improvement from ~1Gb/s to ~2Gb/s. With a local host->guest benchmark
with GSO disabled on the host side, throughput was seen to increase
from 700Mb/s to 1.7Gb/s.

Based on a patch from Herbert Xu.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (use netdev_priv)
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agovirtio_net: hook up the set-tso ethtool op
Mark McLoughlin [Mon, 17 Nov 2008 06:40:36 +0000]
virtio_net: hook up the set-tso ethtool op

Seems like an oversight that we have set-tx-csum and set-sg hooked
up, but not set-tso.

Also leads to the strange situation that if you e.g. disable tx-csum,
then tso doesn't get disabled.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

10 years agovirtio_net: Recycle some more rx buffer pages
Mark McLoughlin [Mon, 17 Nov 2008 06:39:18 +0000]
virtio_net: Recycle some more rx buffer pages

Each time we re-fill the recv queue with buffers, we allocate
one too many skbs and free it again when adding fails. We should
recycle the pages allocated in this case.

A previous version of this patch made trim_pages() trim trailing
unused pages from skbs with some paged data, but this actually
caused a barely measurable slowdown.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (use netdev_priv)
Signed-off-by: David S. Miller <davem@davemloft.net>