GitHub/exynos8895/android_kernel_samsung_universal8895.git
14 years agoloopback: Implement 64bit stats on 32bit arches
Eric Dumazet [Mon, 14 Jun 2010 05:59:22 +0000 (05:59 +0000)]
loopback: Implement 64bit stats on 32bit arches

Uses a seqcount_t to synchronize stat producer and consumer, for packets
and bytes counter, now u64 types.

(dropped counter being rarely used, stay a native "unsigned long" type)

No noticeable performance impact on x86, as it only adds two increments
per frame. It might be more expensive on arches where smp_wmb() is not
free.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoipv6: RCU changes in ipv6_get_mtu() and ip6_dst_hoplimit()
Eric Dumazet [Mon, 14 Jun 2010 04:46:20 +0000 (04:46 +0000)]
ipv6: RCU changes in ipv6_get_mtu() and ip6_dst_hoplimit()

Use RCU to avoid atomic ops on idev refcnt in ipv6_get_mtu()
and ip6_dst_hoplimit()

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoipv6: avoid two atomics in ipv6_rthdr_rcv()
Eric Dumazet [Mon, 14 Jun 2010 04:39:27 +0000 (04:39 +0000)]
ipv6: avoid two atomics in ipv6_rthdr_rcv()

Use __in6_dev_get() instead of in6_dev_get()/in6_dev_put()

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoethtool: Revert incorrect indentation changes
Ben Hutchings [Mon, 14 Jun 2010 08:53:26 +0000 (08:53 +0000)]
ethtool: Revert incorrect indentation changes

commit 97f8aefbbfb5aa5c9944e5fa8149f1fdaf71c7b6 "net: fix ethtool
coding style errors and warnings" changed the indentation of several
macro definitions in ethtool.h.  These definitions line up in the diff
where there is an extra character at the start of each line, but not
in the resulting file.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
David S. Miller [Tue, 15 Jun 2010 05:59:34 +0000 (22:59 -0700)]
Merge branch 'master' of /linux/kernel/git/davem/net-2.6

Conflicts:
drivers/net/ixgbe/ixgbe_ethtool.c

With merge conflict help from Stephen Rothwell.

Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoixgbe: fix automatic LRO/RSC settings for low latency
Andy Gospodarek [Fri, 11 Jun 2010 12:47:03 +0000 (12:47 +0000)]
ixgbe: fix automatic LRO/RSC settings for low latency

This patch added to 2.6.34:

commit f8d1dcaf88bddc7f282722ec1fdddbcb06a72f18
Author: Jesse Brandeburg <jesse.brandeburg@intel.com>
Date:   Tue Apr 27 01:37:20 2010 +0000

    ixgbe: enable extremely low latency

introduced a feature where LRO (called RSC on the hardware) was disabled
automatically when setting rx-usecs to 0 via ethtool.  Some might not
like the fact that LRO was disabled automatically, but I'm fine with
that.  What I don't like is that LRO/RSC is automatically enabled when
rx-usecs is set >0 via ethtool.

This would certainly be a problem if the device was used for forwarding
and it was determined that the low latency wasn't needed after the
device was already forwarding.  I played around with saving the state of
LRO in the driver, but it just didn't seem worthwhile and would require
a small change to dev_disable_lro() that I did not like.

This patch simply leaves LRO disabled when setting rx-usecs >0 and
requires that the user enable it again.  An extra informational message
will also now appear in the log so users can understand why LRO isn't
being enabled as they expect.

Inconsistency of LRO setting first noticed by Stanislaw Gruszka.

Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
CC: Stanislaw Gruszka <sgruszka@redhat.com>
CC: stable@kernel.org
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoe1000: Fix message logging defect
Joe Perches [Fri, 11 Jun 2010 12:51:49 +0000 (12:51 +0000)]
e1000: Fix message logging defect

commit 675ad47375c76a7c3be4ace9554d92cd55518ced
removed the capability to use ethtool.set_msglevel to
control the types of messages emitted by the driver.

That commit should probably be reverted.

If not, then this patch fixes a message logging defect
introduced by converting a printk without KERN_<level>
to e_info.

This also reduces text by about 200 bytes.

Signed-off-by: Joe Perches <joe@perches.com>
Tested-by: Emil Tantilov <emil.s.tantilov@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoixgbe: fix for race with 8259(8|9) during shutdown
Don Skidmore [Fri, 11 Jun 2010 13:20:29 +0000 (13:20 +0000)]
ixgbe: fix for race with 8259(8|9) during shutdown

There is a small window where the watchdog could be running as the
interface is brought down on a NIC with two ports wired back to back.
If ixgbe_update_status is then called can lead to a panic.  This patch
allows the update to bail if we are in that condition.

This issue was orignally reported and fix proposed by Akihiko Saitou.

CC: Akihiko Saitou <asaitou@users.sourceforge.net>
Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet: rxhash already set in __copy_skb_header
Eric Dumazet [Sun, 13 Jun 2010 10:50:46 +0000 (10:50 +0000)]
net: rxhash already set in __copy_skb_header

No need to copy rxhash again in __skb_clone()

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet: fix deliver_no_wcard regression on loopback device
John Fastabend [Sun, 13 Jun 2010 10:36:30 +0000 (10:36 +0000)]
net: fix deliver_no_wcard regression on loopback device

deliver_no_wcard is not being set in skb_copy_header.
In the skb_cloned case it is not being cleared and
may cause the skb to be dropped when the loopback device
pushes it back up the stack.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoirttp: Print device parameters and statistics as unsigned
Ben Hutchings [Tue, 8 Jun 2010 08:23:01 +0000 (08:23 +0000)]
irttp: Print device parameters and statistics as unsigned

Device statistics have type unsigned long and several of the
device-specific parameters printed here have type __u32.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agousbnet: Print device statistics as unsigned
Ben Hutchings [Tue, 8 Jun 2010 08:20:59 +0000 (08:20 +0000)]
usbnet: Print device statistics as unsigned

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agosfc: Implement 64-bit net device statistics on all architectures
Ben Hutchings [Tue, 8 Jun 2010 07:21:12 +0000 (07:21 +0000)]
sfc: Implement 64-bit net device statistics on all architectures

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet: Enable 64-bit net device statistics on 32-bit architectures
Ben Hutchings [Tue, 8 Jun 2010 07:19:54 +0000 (07:19 +0000)]
net: Enable 64-bit net device statistics on 32-bit architectures

Use struct rtnl_link_stats64 as the statistics structure.

On 32-bit architectures, insert 32 bits of padding after/before each
field of struct net_device_stats to make its layout compatible with
struct rtnl_link_stats64.  Add an anonymous union in net_device; move
stats into the union and add struct rtnl_link_stats64 stats64.

Add net_device_ops::ndo_get_stats64, implementations of which will
return a pointer to struct rtnl_link_stats64.  Drivers that implement
this operation must not update the structure asynchronously.

Change dev_get_stats() to call ndo_get_stats64 if available, and to
return a pointer to struct rtnl_link_stats64.  Change callers of
dev_get_stats() accordingly.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoucc_geth driver: add ioctl
Sergey Matyukevich [Mon, 7 Jun 2010 08:38:13 +0000 (08:38 +0000)]
ucc_geth driver: add ioctl

ioctl operation (ndo_do_ioctl) is added to make mii-tools work

Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoenic: fix pci_alloc_consistent argument
Randy Dunlap [Tue, 8 Jun 2010 07:00:20 +0000 (07:00 +0000)]
enic: fix pci_alloc_consistent argument

Fix build warning on i386 (32-bit) with 32-bit dma_addr_t:

drivers/net/enic/vnic_dev.c: In function 'vnic_dev_init_prov':
drivers/net/enic/vnic_dev.c:716: warning: passing argument 3 of 'pci_alloc_consistent' from incompatible pointer type
include/asm-generic/pci-dma-compat.h:16: note: expected 'dma_addr_t *' but argument is of type 'u64 *'

Now builds without warnings on i386 and on x86_64.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Scott Feldman <scofeldm@cisco.com>
Cc: Vasanthy Kolluri <vkolluri@cisco.com>
Cc: Roopa Prabhu <roprabhu@cisco.com>
Acked-by: Scott Feldman <scofeldm@cisco.com>
14 years agopktgen: increasing transmission granularity
Daniel Turull [Wed, 9 Jun 2010 22:49:57 +0000 (22:49 +0000)]
pktgen: increasing transmission granularity

This patch increases the granularity of the rate generated by pktgen.
The previous version of pktgen uses micro seconds (udelay) resolution when it
was delayed causing gaps in the rates. It is changed to nanosecond (ndelay).
Now any rate is possible.

Also it allows to set, the desired rate in Mb/s or packets per second.

The documentation has been updated.

Signed-off-by: Daniel Turull <daniel.turull@gmail.com>
Signed-off-by: Robert Olsson <robert.olsson@its.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoeconet: fix locking
Eric Dumazet [Wed, 9 Jun 2010 16:33:05 +0000 (16:33 +0000)]
econet: fix locking

econet lacks proper locking. It holds econet_lock only when inserting or
deleting an entry in econet_sklist, not during lookups.

- convert econet_lock from rwlock to spinlock

- use econet_lock in ec_listening_socket() lookup

- use appropriate sock_hold() / sock_put() to avoid corruptions.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agopkt_sched: gen_kill_estimator() rcu fixes
Eric Dumazet [Wed, 9 Jun 2010 02:09:23 +0000 (02:09 +0000)]
pkt_sched: gen_kill_estimator() rcu fixes

gen_kill_estimator() API is incomplete or not well documented, since
caller should make sure an RCU grace period is respected before
freeing stats_lock.

This was partially addressed in commit 5d944c640b4
(gen_estimator: deadlock fix), but same problem exist for all
gen_kill_estimator() users, if lock they use is not already RCU
protected.

A code review shows xt_RATEEST.c, act_api.c, act_police.c have this
problem. Other are ok because they use qdisc lock, already RCU
protected.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agobnx2: Fix compiler warning in bnx2_disable_forced_2g5().
Michael Chan [Tue, 8 Jun 2010 07:21:30 +0000 (07:21 +0000)]
bnx2: Fix compiler warning in bnx2_disable_forced_2g5().

drivers/net/bnx2.c: In function 'bnx2_disable_forced_2g5':
drivers/net/bnx2.c:1489: warning: 'bmcr' may be used uninitialized in this function

We fix it by checking return values from all bnx2_read_phy() and proceeding
to do read-modify-write only if the read operation is successful.

The related bnx2_enable_forced_2g5() is also fixed the same way.

Reported-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoenic: cleanup vic_provinfo_alloc()
Dan Carpenter [Wed, 9 Jun 2010 21:59:03 +0000 (21:59 +0000)]
enic: cleanup vic_provinfo_alloc()

If oui were a null variable then vic_provinfo_alloc() would leak memory.
But this function is only called from one place and oui is not null so
I removed the check.

I also moved the memory allocation down a line so it was easier to spot.
(No one ever reads variable declarations).

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
David S. Miller [Fri, 11 Jun 2010 20:32:31 +0000 (13:32 -0700)]
Merge branch 'master' of /linux/kernel/git/davem/net-2.6

14 years agoethoc: use devres resource management
Jonas Bonn [Fri, 11 Jun 2010 02:47:40 +0000 (02:47 +0000)]
ethoc: use devres resource management

The point of using the devres resource management routines is that they
simplify the driver by taking care of releasing resources on failure and
release.  A recent commit added a bunch of error handling that is unnecessary
in this context.

This patch removes this redundant error handling, as well as using
dmam_alloc_coherent in place of dma_alloc_coherent in order to use this
framework consistenly throughout the driver.

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoethoc: Clear command buffer after write
Jonas Bonn [Fri, 11 Jun 2010 02:47:39 +0000 (02:47 +0000)]
ethoc: Clear command buffer after write

This matches what ethoc_mdio_read does and makes the functions
symmetric.

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoRemove unused variable
Jonas Bonn [Fri, 11 Jun 2010 02:47:38 +0000 (02:47 +0000)]
Remove unused variable

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoethoc: Clean up PHY probing
Jonas Bonn [Fri, 11 Jun 2010 02:47:37 +0000 (02:47 +0000)]
ethoc: Clean up PHY probing

- No need to iterate over all possible addresses on bus
- Use helper function phy_find_first
- Use phy_connect_direct as we already have the relevant structure

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoethoc: write number of TX buffers in init_ring
Jonas Bonn [Fri, 11 Jun 2010 02:47:36 +0000 (02:47 +0000)]
ethoc: write number of TX buffers in init_ring

This moves the write of the TX_BD_NUM to init_ring together with the
rest of the code setting up the transmission buffers.

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoethoc: Write bus addresses to registers
Jonas Bonn [Fri, 11 Jun 2010 02:47:35 +0000 (02:47 +0000)]
ethoc: Write bus addresses to registers

The ethoc driver should be writing bus addresses to the ethoc registers, not
virtual addresses.  This patch adds an array to store the virtual addresses
in and references that array when manipulating the contents of the buffer
descriptors.

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoethoc: calculate number of buffers in ethoc_probe
Jonas Bonn [Fri, 11 Jun 2010 02:47:34 +0000 (02:47 +0000)]
ethoc: calculate number of buffers in ethoc_probe

This moves the calculation of the number of transmission buffers to
ethoc_probe where it more logically fits with the rest of the memory
allocation code.

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoMerge branch 'wimax-2.6.35.y' of git://git.kernel.org/pub/scm/linux/kernel/git/inaky...
David S. Miller [Fri, 11 Jun 2010 19:38:23 +0000 (12:38 -0700)]
Merge branch 'wimax-2.6.35.y' of git://git./linux/kernel/git/inaky/wimax

14 years agowimax/i2400m: fix missing endian correction read in fw loader
Inaky Perez-Gonzalez [Fri, 11 Jun 2010 18:51:20 +0000 (11:51 -0700)]
wimax/i2400m: fix missing endian correction read in fw loader

i2400m_fw_hdr_check() was accessing hardware field
bcf_hdr->module_type (little endian 32) without converting to host
byte sex.

Reported-by: Данилин Михаил <mdanilin@nsg.net.ru>
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
14 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
David S. Miller [Fri, 11 Jun 2010 18:34:06 +0000 (11:34 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-next-2.6

Conflicts:
drivers/net/wireless/wl12xx/wl1271.h
drivers/net/wireless/wl12xx/wl1271_cmd.h

14 years agonet-next: remove useless union keyword
Changli Gao [Fri, 11 Jun 2010 06:31:35 +0000 (23:31 -0700)]
net-next: remove useless union keyword

remove useless union keyword in rtable, rt6_info and dn_route.

Since there is only one member in a union, the union keyword isn't useful.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet8139: fix a race at the end of NAPI
Figo.zhang [Mon, 7 Jun 2010 21:13:22 +0000 (21:13 +0000)]
net8139: fix a race at the end of NAPI

fix a race at the end of NAPI complete processing, it had
better do __napi_complete() first before re-enable interrupt.

Signed-off-by:Figo.zhang <figo1802@gmail.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agopktgen: Fix accuracy of inter-packet delay.
Daniel Turull [Fri, 11 Jun 2010 06:08:11 +0000 (23:08 -0700)]
pktgen: Fix accuracy of inter-packet delay.

This patch correct a bug in the delay of pktgen.
It makes sure the inter-packet interval is accurate.

Signed-off-by: Daniel Turull <daniel.turull@gmail.com>
Signed-off-by: Robert Olsson <robert.olsson@its.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agopkt_sched: gen_estimator: add a new lock
Eric Dumazet [Tue, 8 Jun 2010 23:39:10 +0000 (23:39 +0000)]
pkt_sched: gen_estimator: add a new lock

gen_kill_estimator() / gen_new_estimator() is not always called with
RTNL held.

net/netfilter/xt_RATEEST.c is one user of these API that do not hold
RTNL, so random corruptions can occur between "tc" and "iptables".

Add a new fine grained lock instead of trying to use RTNL in netfilter.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoip: ip_ra_control() rcu fix
Eric Dumazet [Wed, 9 Jun 2010 16:21:07 +0000 (16:21 +0000)]
ip: ip_ra_control() rcu fix

commit 66018506e15b (ip: Router Alert RCU conversion) introduced RCU
lookups to ip_call_ra_chain(). It missed proper deinit phase :
When ip_ra_control() deletes an ip_ra_chain, it should make sure
ip_call_ra_chain() users can not start to use socket during the rcu
grace period. It should also delay the sock_put() after the grace
period, or we risk a premature socket freeing and corruptions, as
raw sockets are not rcu protected yet.

This delay avoids using expensive atomic_inc_not_zero() in
ip_call_ra_chain().

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet: deliver skbs on inactive slaves to exact matches
John Fastabend [Thu, 3 Jun 2010 09:30:11 +0000 (09:30 +0000)]
net: deliver skbs on inactive slaves to exact matches

Currently, the accelerated receive path for VLAN's will
drop packets if the real device is an inactive slave and
is not one of the special pkts tested for in
skb_bond_should_drop().  This behavior is different then
the non-accelerated path and for pkts over a bonded vlan.

For example,

vlanx -> bond0 -> ethx

will be dropped in the vlan path and not delivered to any
packet handlers at all.  However,

bond0 -> vlanx -> ethx

and

bond0 -> ethx

will be delivered to handlers that match the exact dev,
because the VLAN path checks the real_dev which is not a
slave and netif_recv_skb() doesn't drop frames but only
delivers them to exact matches.

This patch adds a sk_buff flag which is used for tagging
skbs that would previously been dropped and allows the
skb to continue to skb_netif_recv().  Here we add
logic to check for the deliver_no_wcard flag and if it
is set only deliver to handlers that match exactly.  This
makes both paths above consistent and gives pkt handlers
a way to identify skbs that come from inactive slaves.
Without this patch in some configurations skbs will be
delivered to handlers with exact matches and in others
be dropped out right in the vlan path.

I have tested the following 4 configurations in failover modes
and load balancing modes.

# bond0 -> ethx

# vlanx -> bond0 -> ethx

# bond0 -> vlanx -> ethx

# bond0 -> ethx
            |
  vlanx -> --

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoipv6: fix ICMP6_MIB_OUTERRORS
Eric Dumazet [Mon, 7 Jun 2010 22:24:44 +0000 (22:24 +0000)]
ipv6: fix ICMP6_MIB_OUTERRORS

In commit 1f8438a85366 (icmp: Account for ICMP out errors), I did a typo
on IPV6 side, using ICMP6_MIB_OUTMSGS instead of ICMP6_MIB_OUTERRORS

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoipv6: mcast: RCU conversions
Eric Dumazet [Mon, 7 Jun 2010 21:05:02 +0000 (21:05 +0000)]
ipv6: mcast: RCU conversions

- ipv6_sock_mc_join() : doesnt touch dev refcount

- ipv6_sock_mc_drop() : doesnt touch dev/idev refcounts

- ip6_mc_find_dev() becomes ip6_mc_find_dev_rcu() (called from rcu),
                    and doesnt touch dev/idev refcounts

- ipv6_sock_mc_close() : doesnt touch dev/idev refcounts

- ip6_mc_source() uses ip6_mc_find_dev_rcu()

- ip6_mc_msfilter() uses ip6_mc_find_dev_rcu()

- ip6_mc_msfget() uses ip6_mc_find_dev_rcu()

- ipv6_dev_mc_dec(), ipv6_chk_mcast_addr(),
  igmp6_event_query(), igmp6_event_report(),
  mld_sendpack(), igmp6_send() dont touch idev refcount

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agocleanup: remove pppoe_xmit() declaration.
Rami Rosen [Tue, 8 Jun 2010 19:07:56 +0000 (19:07 +0000)]
cleanup: remove pppoe_xmit() declaration.

There is no need for pppoe_xmit() forward declaration in
drivers/net/pppoe.c. This patch removes this  pppoe_xmit() declaration.

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoicmp: RCU conversion in icmp_address_reply()
Eric Dumazet [Mon, 7 Jun 2010 22:34:35 +0000 (22:34 +0000)]
icmp: RCU conversion in icmp_address_reply()

- rcu_read_lock() already held by caller
- use __in_dev_get_rcu() instead of in_dev_get() / in_dev_put()
- remove goto out;

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agor8169: fix mdio_read and update mdio_write according to hw specs
Timo Teräs [Thu, 10 Jun 2010 00:31:48 +0000 (17:31 -0700)]
r8169: fix mdio_read and update mdio_write according to hw specs

Realtek confirmed that a 20us delay is needed after mdio_read and
mdio_write operations. Reduce the delay in mdio_write, and add it
to mdio_read too. Also add a comment that the 20us is from hw specs.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoMerge branch 'num_rx_queues' of git://kernel.ubuntu.com/rtg/net-2.6
David S. Miller [Wed, 9 Jun 2010 23:28:25 +0000 (16:28 -0700)]
Merge branch 'num_rx_queues' of git://kernel.ubuntu.com/rtg/net-2.6

14 years agogianfar: Revive the driver for eTSEC devices (disable timestamping)
Anton Vorontsov [Wed, 9 Jun 2010 23:27:08 +0000 (16:27 -0700)]
gianfar: Revive the driver for eTSEC devices (disable timestamping)

Since commit cc772ab7cdcaa24d1fae332d92a1602788644f7a ("gianfar: Add
hardware RX timestamping support"), the driver no longer works on
at least MPC8313ERDB and MPC8568EMDS boards (and possibly much more
boards as well).

That's how MPC8313 Reference Manual describes RCTRL_TS_ENABLE bit:

  Timestamp incoming packets as padding bytes. PAL field is set
  to 8 if the PAL field is programmed to less than 8. Must be set
  to zero if TMR_CTRL[TE]=0.

I see that the commit above sets this bit, but it doesn't handle
TMR_CTRL. Manfred probably had this bit set by the firmware for
his boards. But obviously this isn't true for all boards in the
wild.

Also, I recall that Freescale BSPs were explicitly disabling the
timestamping because of a performance drop.

For now, the best way to deal with this is just disable the
timestamping, and later we can discuss proper device tree bindings
and implement enabling this feature via some property.

Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agocaif: fix a couple range checks
Dan Carpenter [Mon, 7 Jun 2010 04:51:58 +0000 (04:51 +0000)]
caif: fix a couple range checks

The extra ! character means that these conditions are always false.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Sjur Braendeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agophylib: Add support for the LXT973 phy.
Richard Cochran [Mon, 7 Jun 2010 05:39:32 +0000 (05:39 +0000)]
phylib: Add support for the LXT973 phy.

This patch implements a work around for Erratum 5, "3.3 V Fiber Speed
Selection." If the hardware wiring does not respect this erratum, then
fiber optic mode will not work properly.

Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agophonet: use call_rcu for phonet device free
Jiri Pirko [Mon, 7 Jun 2010 03:27:39 +0000 (03:27 +0000)]
phonet: use call_rcu for phonet device free

Use call_rcu rather than synchronize_rcu.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet: Print num_rx_queues imbalance warning only when there are allocated queues
Tim Gardner [Tue, 8 Jun 2010 23:51:27 +0000 (17:51 -0600)]
net: Print num_rx_queues imbalance warning only when there are allocated queues

BugLink: http://bugs.launchpad.net/bugs/591416
There are a number of network drivers (bridge, bonding, etc) that are not yet
receive multi-queue enabled and use alloc_netdev(), so don't print a
num_rx_queues imbalance warning in that case.

Also, only print the warning once for those drivers that _are_ multi-queue
enabled.

Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
14 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
David S. Miller [Wed, 9 Jun 2010 18:13:23 +0000 (11:13 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

14 years agomac80211: fix deauth before assoc
Johannes Berg [Mon, 7 Jun 2010 19:50:07 +0000 (21:50 +0200)]
mac80211: fix deauth before assoc

When we receive a deauthentication frame before
having successfully associated, we neither print
a message nor abort assocation. The former makes
it hard to debug, while the latter later causes
a warning in cfg80211 when, as will typically be
the case, association timed out.

This warning was reported by many, e.g. in
https://bugzilla.kernel.org/show_bug.cgi?id=15981,
but I couldn't initially pinpoint it. I verified
the fix by hacking hostapd to send a deauth frame
instead of an association response.

Cc: stable@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Tested-by: Miles Lane <miles.lane@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwlwifi: add missing rcu_read_lock
Johannes Berg [Mon, 7 Jun 2010 19:20:38 +0000 (21:20 +0200)]
iwlwifi: add missing rcu_read_lock

Using ieee80211_find_sta() needs to be under
RCU read lock, which iwlwifi currently misses,
so fix it.

Cc: stable@kernel.org
Reported-by: Miles Lane <miles.lane@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Reinette Chatre <reinette.chatre@intel.com>
Tested-by: Miles Lane <miles.lane@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agowl1251: fix ELP_CTRL register reads
Grazvydas Ignotas [Tue, 8 Jun 2010 11:33:31 +0000 (14:33 +0300)]
wl1251: fix ELP_CTRL register reads

Reading the ELP_CTRL register with sdio_readb causes problems because
hardware seems to be performing a write using stuff bits in the request
(those bits contain write data in write request). This indicates that it
actually expects RAW (read after write) type of request, so perform that
when reading ELP_CTRL instead. Also cache last written value so we know
what to write when doing RAW request.

Because of the above it was not possible to wake the chip from ELP power
saving mode, PM had to be disabled to have the driver usable in SDIO
mode. After this patch PM is functional.

For backporting to 2.6.34 or earlier, this patch depends on
6c1f716e8154ee9315534782b9b1eedea0559a24, which adds the
required SDIO funcion.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agowireless: fix kernel-doc
Johannes Berg [Mon, 7 Jun 2010 09:12:27 +0000 (11:12 +0200)]
wireless: fix kernel-doc

Fix a whole bunch of kernel-doc warnings
and errors that crop up when running it on
mac80211 and cfg80211; the latter isn't
normally done so lots of bit-rot happened.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: Add netif state checking to ieee80211_ifa_changed
Juuso Oikarinen [Mon, 7 Jun 2010 07:52:12 +0000 (10:52 +0300)]
mac80211: Add netif state checking to ieee80211_ifa_changed

There's a window for ieee80211_ifa_changed() to get called whilst the
managed mode mutex has not been initialized when opening and stopping the
interface. Currently this causes a kernel BUG like the following:

[  132.460013] kernel BUG at /home/wifi/iwlwifi-2.6/net/mac80211/main.c:380!
[  132.460013] invalid opcode: 0000 [#1] SMP

The mutex is initialized during open(), hence once netif_running() is true,
the mutex should be valid. Fix by adding a netif_running() check to the
function.

Reported-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Tested-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: add debugfs file for queue debugging
Bruno Randolf [Mon, 7 Jun 2010 04:11:40 +0000 (13:11 +0900)]
ath5k: add debugfs file for queue debugging

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: no need to save/restore the default antenna
Bruno Randolf [Mon, 7 Jun 2010 04:11:35 +0000 (13:11 +0900)]
ath5k: no need to save/restore the default antenna

Since ath5k_hw_set_antenna_mode() always writes the default antenna register
and is called at the end of reset, there is no need to separately save and
restore the default antenna.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: new function for setting the antenna switch table
Bruno Randolf [Mon, 7 Jun 2010 04:11:30 +0000 (13:11 +0900)]
ath5k: new function for setting the antenna switch table

Collect all pieces concering the antenna switch table into one function.
Previously it was split up between ath5k_hw_reset() and
ath5k_hw_commit_eeprom_settings().

Also we need to set the antenna switch table when ath5k_hw_set_antenna_mode()
is called manually (by "iw phy0 antenna set", for example).

I'm not sure if we need to set the switchtable at the same place in
ath5k_hw_reset() as it was before - it is set later thru
ath5k_hw_set_antenna_mode() anyways - but i leave it there to avoid
problems(?).

Plus print switchtable registers in the debugfs file.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: update AR5K_PHY_RESTART_DIV_GC values to match masks
Bruno Randolf [Mon, 7 Jun 2010 04:11:25 +0000 (13:11 +0900)]
ath5k: update AR5K_PHY_RESTART_DIV_GC values to match masks

#define AR5K_PHY_RESTART_DIV_GC               0x001c0000
is 3 bit wide.

The previous values of 0xc and 0x8 are 4bit wide and bigger than the mask.

Writing 0 and 1 to AR5K_PHY_RESTART_DIV_GC is consistent with the comments and
initvals we have in the HAL.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agolibertas: Fix ethtool reporting no WOL options supported if WOL is not already active
Sascha Silbe [Sat, 5 Jun 2010 11:30:12 +0000 (13:30 +0200)]
libertas: Fix ethtool reporting no WOL options supported if WOL is not already active

This patch fixes the libertas driver incorrectly reporting that Wake-on-LAN
is not supported if Wake-on-LAN is currently disabled.

Signed-off-by: Sascha Silbe <sascha-pgp@silbe.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoanycast: Some RCU conversions
Eric Dumazet [Mon, 7 Jun 2010 11:42:13 +0000 (11:42 +0000)]
anycast: Some RCU conversions

- dev_get_by_flags() changed to dev_get_by_flags_rcu()

- ipv6_sock_ac_join() dont touch dev & idev refcounts
- ipv6_sock_ac_drop() dont touch dev & idev refcounts
- ipv6_sock_ac_close() dont touch dev & idev refcounts
- ipv6_dev_ac_dec() dount touch idev refcount
- ipv6_chk_acast_addr() dont touch idev refcount

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet: avoid two atomic ops in ip_rcv_options()
Eric Dumazet [Mon, 7 Jun 2010 03:54:46 +0000 (03:54 +0000)]
net: avoid two atomic ops in ip_rcv_options()

in_dev_get() -> __in_dev_get_rcu() in a rcu protected function.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoipv4: avoid two atomic ops in ip_rt_redirect()
Eric Dumazet [Tue, 8 Jun 2010 04:49:44 +0000 (21:49 -0700)]
ipv4: avoid two atomic ops in ip_rt_redirect()

in_dev_get() -> __in_dev_get_rcu() in a rcu protected function.

[ Fix build with CONFIG_IP_ROUTE_VERBOSE disabled. -DaveM ]

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoigmp: avoid two atomic ops in igmp_rcv()
Eric Dumazet [Mon, 7 Jun 2010 03:17:10 +0000 (03:17 +0000)]
igmp: avoid two atomic ops in igmp_rcv()

in_dev_get() -> __in_dev_get_rcu() in a rcu protected function.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoip: Router Alert RCU conversion
Eric Dumazet [Mon, 7 Jun 2010 03:12:08 +0000 (03:12 +0000)]
ip: Router Alert RCU conversion

Straightforward conversion to RCU.

One rwlock becomes a spinlock, and is static.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agomacvlan: use call_rcu for port free
Jiri Pirko [Mon, 7 Jun 2010 01:36:29 +0000 (01:36 +0000)]
macvlan: use call_rcu for port free

Use call_rcu rather than synchronize_rcu.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoath: Fix uninitialized variable warnings
Prarit Bhargava [Thu, 27 May 2010 18:14:54 +0000 (14:14 -0400)]
ath: Fix uninitialized variable warnings

Fixes 'make -j24 CONFIG_DEBUG_SECTION_MISMATCH=y' warning:

drivers/net/wireless/ath/ath9k/eeprom_4k.c: In function ‘ath9k_hw_get_4k_gain_boundaries_pdadcs.clone.1’:
drivers/net/wireless/ath/ath9k/eeprom_4k.c:311: error: ‘minPwrT4’ may be used uninitialized in this function
drivers/net/wireless/ath/ath9k/eeprom_9287.c: In function ‘ath9k_hw_get_AR9287_gain_boundaries_pdadcs’:
drivers/net/wireless/ath/ath9k/eeprom_9287.c:302: error: ‘minPwrT4’ may be used uninitialized in this function
drivers/net/wireless/ath/ath9k/eeprom_def.c: In function ‘ath9k_hw_get_def_gain_boundaries_pdadcs.clone.0’:
drivers/net/wireless/ath/ath9k/eeprom_def.c:679: error: ‘minPwrT4’ may be used uninitialized in this function

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
John W. Linville [Mon, 7 Jun 2010 19:13:46 +0000 (15:13 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

Conflicts:
drivers/net/wireless/iwlwifi/iwl-core.h

14 years agomac80211: fix lock leak w/ ARP filtering and w/o CONFIG_INET
John W. Linville [Mon, 7 Jun 2010 19:02:17 +0000 (15:02 -0400)]
mac80211: fix lock leak w/ ARP filtering and w/o CONFIG_INET

"mac80211: make ARP filtering depend on CONFIG_INET" introduced this
potential locking leak.

Reported-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoiwlwifi: fix-up botched revert
John W. Linville [Mon, 7 Jun 2010 18:16:11 +0000 (14:16 -0400)]
iwlwifi: fix-up botched revert

In the revert of "iwlwifi: move _agn statistics related structure", I
need to use CONFIG_IWLWIFI_DEBUGFS instead of CONFIG_IWLWIFI_DEBUG in
the private structure definition.  Without this patch, it is possible
to get this:

drivers/net/wireless/iwlwifi/iwl-rx.c: In function 'iwl_accumulative_statistics':
drivers/net/wireless/iwlwifi/iwl-rx.c:304: error: 'struct iwl_priv' has no member named 'accum_statistics'
drivers/net/wireless/iwlwifi/iwl-rx.c:305: error: 'struct iwl_priv' has no member named 'delta_statistics'
drivers/net/wireless/iwlwifi/iwl-rx.c:306: error: 'struct iwl_priv' has no member named 'max_delta'
drivers/net/wireless/iwlwifi/iwl-rx.c:321: error: 'struct iwl_priv' has no member named 'accum_statistics'
drivers/net/wireless/iwlwifi/iwl-rx.c:323: error: 'struct iwl_priv' has no member named 'accum_statistics'
drivers/net/wireless/iwlwifi/iwl-rx.c:325: error: 'struct iwl_priv' has no member named 'accum_statistics'
drivers/net/wireless/iwlwifi/iwl-rx.c:327: error: 'struct iwl_priv' has no member named 'accum_statistics'
drivers/net/wireless/iwlwifi/iwl-rx.c:329: error: 'struct iwl_priv' has no member named 'accum_statistics'
drivers/net/wireless/iwlwifi/iwl-rx.c:331: error: 'struct iwl_priv' has no member named 'accum_statistics'
drivers/net/wireless/iwlwifi/iwl-rx.c: In function 'iwl_reply_statistics':
drivers/net/wireless/iwlwifi/iwl-rx.c:484: error: 'struct iwl_priv' has no member named 'accum_statistics'
drivers/net/wireless/iwlwifi/iwl-rx.c:486: error: 'struct iwl_priv' has no member named 'delta_statistics'
drivers/net/wireless/iwlwifi/iwl-rx.c:488: error: 'struct iwl_priv' has no member named 'max_delta'

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agomac80211: fix function pointer check
Holger Schurig [Mon, 7 Jun 2010 14:33:49 +0000 (16:33 +0200)]
mac80211: fix function pointer check

This makes "iw wlan0 dump survey" work again with
mac80211-based drivers that support it, e.g. ath5k.

Signed-off-by: Holger Schurig <holgerschurig@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agowireless: remove my name from the maintainer list
Zhu Yi [Mon, 7 Jun 2010 06:15:43 +0000 (14:15 +0800)]
wireless: remove my name from the maintainer list

Remove my name from the MAINTAINERS file.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoath5k: fix NULL pointer in antenna configuration
Bruno Randolf [Mon, 7 Jun 2010 04:11:19 +0000 (13:11 +0900)]
ath5k: fix NULL pointer in antenna configuration

If the channel is not set yet and we configure the antennas just store the
setting. It will be activated during the next reset, when the channel is set.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agop54usb: Add device ID for Dell WLA3310 USB
Jason Dravet [Sat, 5 Jun 2010 20:08:29 +0000 (15:08 -0500)]
p54usb: Add device ID for Dell WLA3310 USB

Add Dell WLA3310 USB wireless card, which has a Z-Com XG-705A chipset, to the
USB Ids in p54usb.

Signed-off-by: Jason Dravet <dravet@hotmail.com>
Tested-by: Richard Gregory Tillmore <rtillmore@gmail.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Christian Lamparter <chunkeey@googlemail.com>
Cc: <stable@kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agowl1251: fix a memory leak in probe
Grazvydas Ignotas [Fri, 4 Jun 2010 23:25:47 +0000 (02:25 +0300)]
wl1251: fix a memory leak in probe

wl1251_sdio_probe() error path is missing wl1251_free_hw, add it.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Acked-by: Kalle Valo <kvalo@adurom.com>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
14 years agoipmr: dont corrupt lists
Eric Dumazet [Sun, 6 Jun 2010 23:48:40 +0000 (23:48 +0000)]
ipmr: dont corrupt lists

ipmr_rules_exit() and ip6mr_rules_exit() free a list of items, but
forget to properly remove these items from list. List head is not
changed and still points to freed memory.

This can trigger a fault later when icmpv6_sk_exit() is called.

Fix is to either reinit list, or use list_del() to properly remove items
from list before freeing them.

bugzilla report : https://bugzilla.kernel.org/show_bug.cgi?id=16120

Introduced by commit d1db275dd3f6e4 (ipv6: ip6mr: support multiple
tables) and commit f0ad0860d01e (ipv4: ipmr: support multiple tables)

Reported-by: Alex Zhavnerchik <alex.vizor@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years ago8139too: fix buffer overrun in rtl8139_init_board
Denis Kirjanov [Mon, 7 Jun 2010 08:13:57 +0000 (01:13 -0700)]
8139too: fix buffer overrun in rtl8139_init_board

Fix rtl_chip_info buffer overrun when we can't identify the chip.
(i = ARRAY_SIZE (rtl_chip_info) in this case)

Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet: Remove unnecessary net action assertion
jamal [Fri, 4 Jun 2010 02:06:22 +0000 (02:06 +0000)]
net: Remove unnecessary net action assertion

The extra assertion to allow packet munging only when there are
no other ptypes listening which may have worked around an old bug
is unnecessary. It is sufficient to check if the skb is cloned before
trampling on it. Thanks to Herbert Xu for being persistent and patient
in getting this across.
[Note that cloning checks and assertions are the general rule used
by tc actions (documentation/networking/tc-actions-env-rules.txt)].

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet sched: make pedit check for clones instead
jamal [Fri, 4 Jun 2010 02:43:06 +0000 (02:43 +0000)]
net sched: make pedit check for clones instead

Now that the core path doesnt set OK to munge we detect
writable skbs by looking to see if they are cloned.

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agohtb: remove two unnecessary assignments
Changli Gao [Fri, 4 Jun 2010 01:33:33 +0000 (01:33 +0000)]
htb: remove two unnecessary assignments

remove two unnecessary assignments

we don't need to assign NULL when initialize structure objects.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
----
 net/sched/sch_htb.c |    2 --
 1 file changed, 2 deletions(-)
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agogreth: Remove unnecessary memset of napi member in netdev private data
Tobias Klauser [Thu, 3 Jun 2010 20:24:21 +0000 (20:24 +0000)]
greth: Remove unnecessary memset of napi member in netdev private data

The memory for the private data is allocated using kzalloc in
alloc_etherdev (or alloc_netdev_mq respectively) so there is no need to
set the napi member to 0 explicitely.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoraw: avoid two atomics in xmit
Eric Dumazet [Thu, 3 Jun 2010 22:23:57 +0000 (22:23 +0000)]
raw: avoid two atomics in xmit

Avoid two atomic ops per raw_send_hdrinc() call

Avoid two atomic ops per raw6_send_hdrinc() call

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agonet-caif: Added missing lock validator constants
Alex Lorca [Mon, 7 Jun 2010 08:01:22 +0000 (01:01 -0700)]
net-caif: Added missing lock validator constants

CAIF is using "xxx-AF_MAX" strings for the lock validator. It should use
its own strings.

Signed-off-by: Alex Lorca <alex.lorca@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoasix: check packet size against mtu+ETH_HLEN instead of ETH_FRAME_LEN
Jussi Kivilinna [Mon, 7 Jun 2010 07:56:27 +0000 (00:56 -0700)]
asix: check packet size against mtu+ETH_HLEN instead of ETH_FRAME_LEN

Driver checks received packet is too large in asix_rx_fixup() and fails if it is. Problem is
that MTU might be set larger than 1500 and asix fails to work correctly with VLAN tagged
packets. The check should be 'dev->net->mtu + ETH_HLEN' instead.

Tested with AX88772.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agotcp: Fix slowness in read /proc/net/tcp
Tom Herbert [Mon, 7 Jun 2010 07:43:42 +0000 (00:43 -0700)]
tcp: Fix slowness in read /proc/net/tcp

This patch address a serious performance issue in reading the
TCP sockets table (/proc/net/tcp).

Reading the full table is done by a number of sequential read
operations.  At each read operation, a seek is done to find the
last socket that was previously read.  This seek operation requires
that the sockets in the table need to be counted up to the current
file position, and to count each of these requires taking a lock for
each non-empty bucket.  The whole algorithm is O(n^2).

The fix is to cache the last bucket value, offset within the bucket,
and the file position returned by the last read operation.   On the
next sequential read, the bucket and offset are used to find the
last read socket immediately without needing ot scan the previous
buckets  the table.  This algorithm t read the whole table is O(n).

The improvement offered by this patch is easily show by performing
cat'ing /proc/net/tcp on a machine with a lot of connections.  With
about 182K connections in the table, I see the following:

- Without patch
time cat /proc/net/tcp > /dev/null

real 1m56.729s
user 0m0.214s
sys 1m56.344s

- With patch
time cat /proc/net/tcp > /dev/null

real 0m0.894s
user 0m0.290s
sys 0m0.594s

Signed-off-by: Tom Herbert <therbert@google.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agotg3: Update version to 3.111
Matt Carlson [Sat, 5 Jun 2010 17:24:39 +0000 (17:24 +0000)]
tg3: Update version to 3.111

This patch updates the tg3 version to 3.111.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agotg3: Add 5719 PCI device and phy IDs
Matt Carlson [Sat, 5 Jun 2010 17:24:38 +0000 (17:24 +0000)]
tg3: Add 5719 PCI device and phy IDs

This patch adds the 5719 PCI device and phy IDs.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agotg3: Add 5719 ASIC rev
Matt Carlson [Sat, 5 Jun 2010 17:24:37 +0000 (17:24 +0000)]
tg3: Add 5719 ASIC rev

This patch adds the 5719 ASIC revision.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agotg3: Use devfn to determine function number
Matt Carlson [Sat, 5 Jun 2010 17:24:36 +0000 (17:24 +0000)]
tg3: Use devfn to determine function number

The driver sometimes needs to know which function number the current
device is.  This patch changes the code to use devfn over internal
register values.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agotg3: 5717: Allow serdes link via parallel detect
Matt Carlson [Sat, 5 Jun 2010 17:24:35 +0000 (17:24 +0000)]
tg3: 5717: Allow serdes link via parallel detect

The 5717 serdes phy brings link up via parallel detection without any
additional help from the driver.  This patch changes the
tg3_setup_fiber_mii_phy() function to detect and allow the use of this
feature.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agotg3: Allow single MSI-X vector allocations
Matt Carlson [Sat, 5 Jun 2010 17:24:34 +0000 (17:24 +0000)]
tg3: Allow single MSI-X vector allocations

This patch changes the code to make it legal to allocate only one MSI-X
vector.  It also fixes a bug where the driver was not checking for error
return codes from pci_enable_msix().

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agotg3: Off-by-one error in RSS setup
Matt Carlson [Sat, 5 Jun 2010 17:24:33 +0000 (17:24 +0000)]
tg3: Off-by-one error in RSS setup

The driver was incorrectly programming the indirection table such that
rx traffic intended for the second ring went to the first ring, rx
traffic intended for the third ring went to the second ring, etc.  This
patch changes the code so that rx traffic is diverted to the proper
ring.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agotg3: Fix a memory leak on 5717+ devices
Matt Carlson [Sat, 5 Jun 2010 17:24:32 +0000 (17:24 +0000)]
tg3: Fix a memory leak on 5717+ devices

The rx resources for MSI-X interrupt vector 0 were not being freed
correctly.  This happens because the teardown loop continue's to the
next loop iteration if it detects the tx ring for that vector is not
setup, thus bypassing the rx teardown code.  This patch moves the
call to tg3_rx_prodring_free() earlier in the loop.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agotg3: Avoid tx lockups on 5755+ devices
Matt Carlson [Sat, 5 Jun 2010 17:24:31 +0000 (17:24 +0000)]
tg3: Avoid tx lockups on 5755+ devices

In certain edge conditions, internal tx resources can get corrupted.
This patch enables a bit that will fix the problem.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agotg3: Relocate APE mutex regs for 5717+
Matt Carlson [Sat, 5 Jun 2010 17:24:30 +0000 (17:24 +0000)]
tg3: Relocate APE mutex regs for 5717+

The 5717 and later devices relocate the APE mutex registers.  This patch
organizes the code so that the driver can use the mutex registers in the
old and new locations.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
David S. Miller [Mon, 7 Jun 2010 00:42:02 +0000 (17:42 -0700)]
Merge branch 'master' of /linux/kernel/git/davem/net-2.6

Conflicts:
drivers/net/sfc/net_driver.h
drivers/net/sfc/siena.c

14 years agor8169: fix random mdio_write failures
Timo Teräs [Sun, 6 Jun 2010 22:38:47 +0000 (15:38 -0700)]
r8169: fix random mdio_write failures

Some configurations need delay between the "write completed" indication
and new write to work reliably.

Realtek driver seems to use longer delay when polling the "write complete"
bit, so it waits long enough between writes with high probability (but
could probably break too). This patch adds a new udelay to make sure we
wait unconditionally some time after the write complete indication.

This caused a regression with XID 18000000 boards when the board specific
phy configuration writing many mdio registers was added in commit
2e955856ff (r8169: phy init for the 8169scd). Some of the configration
mdio writes would almost always fail, and depending on failure might leave
the PHY in non-working state.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Acked-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoip6mr: fix a typo in ip6mr_for_each_table()
Eric Dumazet [Sun, 6 Jun 2010 22:34:40 +0000 (15:34 -0700)]
ip6mr: fix a typo in ip6mr_for_each_table()

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoiwlwifi: fix wrapping when handling aggregated batches
Daniel Halperin [Tue, 25 May 2010 17:22:49 +0000 (10:22 -0700)]
iwlwifi: fix wrapping when handling aggregated batches

Fairly complex code in iwlagn_tx_status_reply_tx handle the status reports for
aggregated packet batches sent by the NIC. This code aims to handle the case
where the NIC retransmits failed packets from a previous batch; the status
information for these packets can sometimes be inserted in the middle of a
batch and are actually not in order by sequence number! (I verified this can
happen with printk's in the function.)

The code in question adaptively identifies the "first" frame of the batch,
taking into account that it may not be the one corresponding to the first agg
status report, and also handles the case when the set of sent packets wraps the
256-character entry buffer. It generates the agg->bitmap field of sent packets
which is later compared to the BlockAck response from the receiver to see which
frames of those sent in this batch were ACKed. A small logic error (wrapping by
0xff==255 instead of 0x100==256) was causing the agg->bitmap to be set
incorrectly.

Fix this wrapping code, and add extensive comments to clarify what is going on.

Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
14 years agoiwlwifi: parse block ack responses correctly
Daniel Halperin [Tue, 25 May 2010 01:41:30 +0000 (18:41 -0700)]
iwlwifi: parse block ack responses correctly

Compressed BlockAck frames store the ACKs/NACKs in a 64-bit bitmap that starts
at the sequence number of the first frame sent in the aggregated batch. Note
that this is a selective ACKnowledgement following selective retransmission;
e.g., if frames 1,4-5 in a batch are ACKed then the next transmission will
include frames 2-3,6-10 (7 frames). In this latter case, the Compressed
BlockAck will not have all meaningful information in the low order bits -- the
semantically meaningful bits of the BA will be 0x1f3 (where the low-order frame
is seq 2).

The driver code originally just looked at the lower (in this case, 7) bits of
the BlockAck. In this case, the lower 7 bits of 0x1f3 => only 5 packets,
maximum, could ever be ACKed. In reality it should be looking at all of the
bits, filtered by those corresponding to packets that were actually sent. This
flaw meant that the number of correctly ACked packets could be significantly
underreported and might result in asynchronous state between TX and RX sides as
well as driver and uCode.

Fix this and also add a shortcut that doesn't require the code to loop through
all 64 bits of the bitmap but rather stops when no higher packets are ACKed.

In my experiments this fix greatly reduces throughput swing, making throughput
stable and high. It is also likely related to some of the stalls observed in
aggregation mode and maybe some of the buffer underruns observed, e.g.,

http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=1968
http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2098
http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2018

Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>