platform/kernel/linux-stable.git
15 years agosctp: Fix data segmentation with small frag_size
Vlad Yasevich [Fri, 4 Sep 2009 22:20:56 +0000 (18:20 -0400)]
sctp: Fix data segmentation with small frag_size

Since an application may specify the maximum SCTP fragment size
that all data should be fragmented to, we need to fix how
we do segmentation.   Right now, if a user specifies a small
fragment size, the segment size can go negative in the presence
of AUTH or COOKIE_ECHO bundling.

What we need to do is track the largest possbile DATA chunk that
can fit into the mtu.  Then if the fragment size specified is
bigger then this maximum length, we'll shrink it down.  Otherwise,
we just use the smaller segment size without changing it further.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
15 years agosctp: Disallow new connection on a closing socket
Vlad Yasevich [Thu, 30 Jul 2009 22:08:28 +0000 (18:08 -0400)]
sctp: Disallow new connection on a closing socket

If a socket has a lot of association that are in the process of
of being closed/aborted, it is possible for a remote to establish
new associations during the time period that the old ones are shutting
down.  If this was a result of a close() call, there will be no socket
and will cause a memory leak.  We'll prevent this by setting the
socket state to CLOSING and disallow new associations when in this state.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
15 years agosctp: Fix piggybacked ACKs
Doug Graham [Wed, 29 Jul 2009 16:05:57 +0000 (12:05 -0400)]
sctp: Fix piggybacked ACKs

This patch corrects the conditions under which a SACK will be piggybacked
on a DATA packet.  The previous condition was incorrect due to a
misinterpretation of RFC 4960 and/or RFC 2960.  Specifically, the
following paragraph from section 6.2 had not been implemented correctly:

   Before an endpoint transmits a DATA chunk, if any received DATA
   chunks have not been acknowledged (e.g., due to delayed ack), the
   sender should create a SACK and bundle it with the outbound DATA
   chunk, as long as the size of the final SCTP packet does not exceed
   the current MTU.  See Section 6.2.

When about to send a DATA chunk, the code now checks to see if the SACK
timer is running.  If it is, we know we have a SACK to send to the
peer, so we append the SACK (assuming available space in the packet)
and turn off the timer.  For a simple request-response scenario, this
will result in the SACK being bundled with the response, meaning the
the SACK is received quickly by the client, and also meaning that no
separate SACK packet needs to be sent by the server to acknowledge the
request.  Prior to this patch, a separate SACK packet would have been
sent by the server SCTP only after its delayed-ACK timer had expired
(usually 200ms).  This is wasteful of bandwidth, and can also have a
major negative impact on performance due the interaction of delayed ACKs
with the Nagle algorithm.

Signed-off-by: Doug Graham <dgraham@nortel.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
15 years agosctp: remove unused union (sctp_cmsg_data_t) definition
Rami Rosen [Thu, 30 Jul 2009 06:38:43 +0000 (09:38 +0300)]
sctp: remove unused union (sctp_cmsg_data_t) definition

This patch removes an unused union definition (sctp_cmsg_data_t)
from include/net/sctp/user.h.

Signed-off-by: Rami Rosen <rosenrami@gmail.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
15 years agosctp: release cached route when the transport goes down.
Vlad Yasevich [Tue, 23 Jun 2009 15:28:05 +0000 (11:28 -0400)]
sctp: release cached route when the transport goes down.

When the sctp transport is marked down, we can release the
cached route and force a new lookup when attempting to use
this transport for anything.  This way, if a better route
or source address is available, we'll try to use it.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
15 years agosctp: update the route for non-active transports after addresses are added
Wei Yongjun [Tue, 16 Jun 2009 02:07:23 +0000 (10:07 +0800)]
sctp: update the route for non-active transports after addresses are added

Update the route and saddr entries for the non-active transports as some
of the added addresses can be used as better source addresses, or may
be there is a better route.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
15 years agosctp: check the unrecognized ASCONF parameter before access it
Wei Yongjun [Tue, 16 Jun 2009 06:48:24 +0000 (14:48 +0800)]
sctp: check the unrecognized ASCONF parameter before access it

This patch fix to check the unrecognized ASCONF parameter before
access it.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
15 years agosctp: avoid overwrite the return value of sctp_process_asconf_ack()
Wei Yongjun [Tue, 16 Jun 2009 06:47:30 +0000 (14:47 +0800)]
sctp: avoid overwrite the return value of sctp_process_asconf_ack()

The return value of sctp_process_asconf_ack() may be
overwritten while process parameters with no error.
This patch fixed the problem.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
15 years agonet: Fix a build break because of a typo in drivers/net/3c503.c
Sachin Sant [Fri, 4 Sep 2009 10:41:07 +0000 (03:41 -0700)]
net: Fix a build break because of a typo in drivers/net/3c503.c

Signed-off-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agocan: sja1000: legacy SJA1000 ISA bus driver
Wolfgang Grandegger [Tue, 1 Sep 2009 05:37:33 +0000 (05:37 +0000)]
can: sja1000: legacy SJA1000 ISA bus driver

This patch adds support for legacy SJA1000 CAN controllers on the ISA
or PC-104 bus. The I/O port or memory address and the IRQ number must
be specified via module parameters:

  insmod sja1000_isa.ko port=0x310,0x380 irq=7,11

for ISA devices using I/O ports or:

  insmod sja1000_isa.ko mem=0xd1000,0xd1000 irq=7,11

for memory mapped ISA devices.

Indirect access via address and data port is supported as well:

  insmod sja1000_isa.ko port=0x310,0x380 indirect=1 irq=7,11

Here is a full list of the supported module parameters:

  port:I/O port number (array of ulong)
  mem:I/O memory address (array of ulong)
  indirect:Indirect access via address and data port (array of byte)
  irq:IRQ number (array of int)
  clk:External oscillator clock frequency (default=16000000 [16 MHz])
      (array of int)
  cdr:Clock divider register (default=0x48 [CDR_CBP | CDR_CLK_OFF])
      (array of byte)
  ocr:Output clock register (default=0x18 [OCR_TX0_PUSHPULL])
      (array of byte)

Note: for clk, cdr, ocr, the first argument re-defines the default
for all other devices, e.g.:

 insmod sja1000_isa.ko mem=0xd1000,0xd1000 irq=7,11 clk=24000000

is equivalent to

 insmod sja1000_isa.ko mem=0xd1000,0xd1000 irq=7,11 \
                       clk=24000000,24000000

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Tested-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agocan: sja1000: fix network statistics update
Wolfgang Grandegger [Tue, 1 Sep 2009 05:29:41 +0000 (05:29 +0000)]
can: sja1000: fix network statistics update

The member "tx_bytes" of "struct net_device_stats" should be
incremented when the interrupt is done and an "arbitration
lost error" is a TX error and the statistics should be updated
accordingly.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agocan: add can_free_echo_skb() for upcoming drivers
Wolfgang Grandegger [Tue, 1 Sep 2009 05:26:12 +0000 (05:26 +0000)]
can: add can_free_echo_skb() for upcoming drivers

This patch adds the function can_free_echo_skb to the CAN
device interface to allow upcoming drivers to release echo
skb's in case of error.

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoWAN: dscc4: Fix warning pointing out a bug.
David S. Miller [Fri, 4 Sep 2009 04:34:39 +0000 (21:34 -0700)]
WAN: dscc4: Fix warning pointing out a bug.

Noticed by Stephen Rothwell:

Today's linux-next build (x86_64 allmodconfig gcc-4.4.0)
produced this warning:

drivers/net/wan/dscc4.c: In function 'dscc4_rx_skb':
drivers/net/wan/dscc4.c:670: warning: suggest parentheses around comparison in operand of '|'

which actually points out a bug, I think.  It is doing
(x & (y | z)) != y | z
when it probably means
(x & (y | z)) != (y | z)

Introduced by commit 5de3fcab91b0e1809eec030355d15801daf25083
("WAN: bit and/or confusion").

Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoipv6: Fix tcp_v6_send_response(): it didn't set skb transport header
Cosmin Ratiu [Fri, 4 Sep 2009 03:44:38 +0000 (20:44 -0700)]
ipv6: Fix tcp_v6_send_response(): it didn't set skb transport header

Here is a patch which fixes an issue observed when using TCP over IPv6
and AH from IPsec.

When a connection gets closed the 4-way method and the last ACK from
the server gets dropped, the subsequent FINs from the client do not
get ACKed because tcp_v6_send_response does not set the transport
header pointer. This causes ah6_output to try to allocate a lot of
memory, which typically fails, so the ACKs never make it out of the
stack.

I have reproduced the problem on kernel 2.6.7, but after looking at
the latest kernel it seems the problem is still there.

Signed-off-by: Cosmin Ratiu <cratiu@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenic: organize device initialization/deinit into separate functions
Scott Feldman [Thu, 3 Sep 2009 17:02:45 +0000 (17:02 +0000)]
enic: organize device initialization/deinit into separate functions

To unclutter probe() a little bit, put all device initialization code
in one spot and device deinit code in another spot.  Also remove unused
rq->buf_index variable/func.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenic: bug fix: check for zero port MTU before posting warning
Scott Feldman [Thu, 3 Sep 2009 17:02:40 +0000 (17:02 +0000)]
enic: bug fix: check for zero port MTU before posting warning

Nic firmware can return zero for port MTU, so check for non-zero value
before checking for change in port MTU.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenic: changes to driver/firmware interface
Scott Feldman [Thu, 3 Sep 2009 17:02:35 +0000 (17:02 +0000)]
enic: changes to driver/firmware interface

Deprecate some old APIa; change arguments to stats dump all API; add new
interrupt assert API

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenic: bug fix: enable VLAN filtering
Scott Feldman [Thu, 3 Sep 2009 17:02:29 +0000 (17:02 +0000)]
enic: bug fix: enable VLAN filtering

Bug fix: enable VLAN filtering

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenic: provision for multiple Rx/Tx queues; prepare for RSS support
Scott Feldman [Thu, 3 Sep 2009 17:02:24 +0000 (17:02 +0000)]
enic: provision for multiple Rx/Tx queues; prepare for RSS support

Provision for multiple Rx/Tx queues.  Max of 8 WQs and 8 RQs.  Max for
completion queue is 8+8=16 and max for interrupt resources is 8+8+2.

Add driver/firmware interface for setting up RSS secret key and indirection
table.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenic: bug fix: included MAC drops in rx_dropped netstat
Scott Feldman [Thu, 3 Sep 2009 17:02:19 +0000 (17:02 +0000)]
enic: bug fix: included MAC drops in rx_dropped netstat

Bug fix: included MAC drops in rx_dropped netstat.  Also track Rx trunctations
stat at the MAC

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenic: bug fix: protect fw call i/f with spinlock
Scott Feldman [Thu, 3 Sep 2009 17:02:14 +0000 (17:02 +0000)]
enic: bug fix: protect fw call i/f with spinlock

Some driver -> nic firmware calls weren't guarded with a spinlock, exposing
the call i/f to a race between two threads

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenic: use netdev_alloc_skb
Scott Feldman [Thu, 3 Sep 2009 17:02:08 +0000 (17:02 +0000)]
enic: use netdev_alloc_skb

Use netdev_alloc_skb rather than dev_alloc_skb

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenic: bug fix: split TSO fragments larger than 16K into multiple descs
Scott Feldman [Thu, 3 Sep 2009 17:02:03 +0000 (17:02 +0000)]
enic: bug fix: split TSO fragments larger than 16K into multiple descs

enic WQ desc supports a maximum 16K buf size, so split any send fragments
larger than 16K into several descs.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenic: workaround A0 erratum
Scott Feldman [Thu, 3 Sep 2009 17:01:58 +0000 (17:01 +0000)]
enic: workaround A0 erratum

A0 revision ASIC has an erratum on the RQ desc cache on chip where the
cache can become corrupted causing pkt buf writes to wrong locations.  The s/w
workaround is to post a dummy RQ desc in the ring every 32 descs, causing a
flush of the cache.  A0 parts are not production, but there are enough of
these parts in the wild in test setups to warrant including workaround.  A1
revision ASIC parts fix erratum.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoenic: add support for multiple BARs
Scott Feldman [Thu, 3 Sep 2009 17:01:53 +0000 (17:01 +0000)]
enic: add support for multiple BARs

Nic firmware can place resources (queues, intrs, etc) on multiple BARs, so
allow driver to discover/map resources beyond BAR0.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agovlan: adds drops accounting
Eric Dumazet [Thu, 3 Sep 2009 00:39:16 +0000 (00:39 +0000)]
vlan: adds drops accounting

Its hard to tell if vlans are dropping frames, since
every frame given to vlan_???_start_xmit() functions
is accounted as fully transmitted by lower device.

We can test dev_queue_xmit() return values to
properly account for dropped frames.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agomacvlan: add multiqueue capability
Eric Dumazet [Thu, 3 Sep 2009 00:11:45 +0000 (00:11 +0000)]
macvlan: add multiqueue capability

macvlan devices are currently not multi-queue capable.

We can do that defining rtnl_link_ops method,
get_tx_queues(), called from rtnl_create_link()

This new method gets num_tx_queues/real_num_tx_queues
from lower device.

macvlan_get_tx_queues() is a copy of vlan_get_tx_queues().

Because macvlan_start_xmit() has to update netdev_queue
stats only (and not dev->stats), I chose to change
tx_errors/tx_aborted_errors accounting to tx_dropped,
since netdev_queue structure doesnt define tx_errors /
tx_aborted_errors.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonetdev: Convert MDIO ioctl implementation to use struct mii_ioctl_data
Ben Hutchings [Thu, 3 Sep 2009 10:41:17 +0000 (10:41 +0000)]
netdev: Convert MDIO ioctl implementation to use struct mii_ioctl_data

A few drivers still access the arguments to MDIO ioctls as an array of
u16.  Convert them to use struct mii_ioctl_data.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonetdev: Remove redundant checks for CAP_NET_ADMIN in MDIO implementations
Ben Hutchings [Thu, 3 Sep 2009 10:39:43 +0000 (10:39 +0000)]
netdev: Remove redundant checks for CAP_NET_ADMIN in MDIO implementations

dev_ioctl() already checks capable(CAP_NET_ADMIN) before calling the
driver's implementation of MDIO ioctls.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonetdev: Remove SIOCDEVPRIVATE aliases for MDIO ioctls
Ben Hutchings [Thu, 3 Sep 2009 10:38:33 +0000 (10:38 +0000)]
netdev: Remove SIOCDEVPRIVATE aliases for MDIO ioctls

The standard MDIO ioctl numbers are well-established and these should
no longer be needed.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agosky2: only enable Vaux if capable of wakeup
Stephen Hemminger [Thu, 3 Sep 2009 06:16:25 +0000 (06:16 +0000)]
sky2: only enable Vaux if capable of wakeup

While perusing vendor driver, I saw that it did not enable the Vaux
power unless device was able to wake from lan for D3cold.
This might help for Rene's power issue.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonetxen: fix infinite loop on dma mapping failure
Dhananjay Phadke [Thu, 3 Sep 2009 13:10:55 +0000 (13:10 +0000)]
netxen: fix infinite loop on dma mapping failure

Fix a perpetual while() loop in unwinding partial
mapped tx skb on dma mapping failure.

Reported-by: "Juha Leppanen" <juha_motorsportcom@luukku.com>
Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonetxen: remove duplicate napi_add
Dhananjay Phadke [Thu, 3 Sep 2009 13:10:54 +0000 (13:10 +0000)]
netxen: remove duplicate napi_add

Remove duplicate calls to netxen_napi_add().

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonetxen: fix lro buffer allocation
Dhananjay Phadke [Thu, 3 Sep 2009 13:10:53 +0000 (13:10 +0000)]
netxen: fix lro buffer allocation

Alloc 12k skbuffs so that firmware can aggregate more
packets into one buffer. This doesn't raise memory
consumption since 9k skbs use 16k slab cache anyway.

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoixgbe: Add support for using FCoE DDP in 82599 as FCoE targets
Yi Zou [Thu, 3 Sep 2009 14:56:31 +0000 (14:56 +0000)]
ixgbe: Add support for using FCoE DDP in 82599 as FCoE targets

The FCoE DDP in 82599 can be used for both FCoE initiator as well as FCoE
target, depending on the indication of the exchange being the responder or
originator in the F_CTL (frame control) field in the encapsulated Fiber
Channel frame header (T10 Spec., FC-FS). For the initiator, OX_ID is used
for FCoE DDP, where for the target RX_ID is used for FCoE DDP.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoixgbe: Distribute transmission of FCoE traffic in 82599
Yi Zou [Thu, 3 Sep 2009 14:56:10 +0000 (14:56 +0000)]
ixgbe: Distribute transmission of FCoE traffic in 82599

This adds a simple selection of a FCoE tx queue based on the current cpu id to
distribute transmission of FCoE traffic evenly among multiple FCoE transmit
queues.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoixgbe: Add support for multiple Tx queues for FCoE in 82599
Yi Zou [Thu, 3 Sep 2009 14:55:50 +0000 (14:55 +0000)]
ixgbe: Add support for multiple Tx queues for FCoE in 82599

This patch adds support for multiple transmit queues to the Fiber Channel
over Ethernet (FCoE) feature found in 82599. Currently, FCoE has multiple
Rx queues available, along with a redirection table, that helps distribute
the I/O load across multiple CPUs based on the FC exchange ID. To make
this the most effective, we need to provide the same layout of transmit
queues to match receive.

Particularly, when Data Center Bridging (DCB) is enabled, the designated
traffic class for FCoE can have dedicated queues for just FCoE traffic,
while not affecting any other type of traffic flow.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoigb: set vf rlpml wasn't taking vlan tag into account
Alexander Duyck [Thu, 3 Sep 2009 14:49:33 +0000 (14:49 +0000)]
igb: set vf rlpml wasn't taking vlan tag into account

This patch updates things so that vlan tags are taken into account when
setting the receive large packet maximum length.  This allows the VF driver
to correctly receive full sized frames when vlans are enabled.

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>
15 years agoigb: only disable/enable interrupt bits for igb physical function
Alexander Duyck [Thu, 3 Sep 2009 14:49:15 +0000 (14:49 +0000)]
igb: only disable/enable interrupt bits for igb physical function

The igb_irq_disable/enable calls were causing virtual functions associated
with the igb physical function to have their interrupts disabled.  In order
to prevent this from occuring we should only clear/set the bits related to
the physical function.

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>
15 years agoigb: add support for set_rx_mode netdevice operation
Alexander Duyck [Thu, 3 Sep 2009 14:48:56 +0000 (14:48 +0000)]
igb: add support for set_rx_mode netdevice operation

This patch adds support for the set_rx_mode netdevice operation so that igb
can better support multiple unicast addresses.

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>
15 years agonet: Remove debugging code
Eric Dumazet [Thu, 3 Sep 2009 12:17:20 +0000 (05:17 -0700)]
net: Remove debugging code

Remove a debugging aid I accidently left in previous 'cleanup' patch

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agovlan: enable multiqueue xmits
Eric Dumazet [Thu, 3 Sep 2009 09:19:58 +0000 (02:19 -0700)]
vlan: enable multiqueue xmits

vlan_dev_hard_start_xmit() & vlan_dev_hwaccel_hard_start_xmit()
select txqueue number 0, instead of using index provided by
skb_get_queue_mapping().

This is not correct after commit 2e59af3dcbdf11635c03f
[vlan: multiqueue vlan device] because
txq->tx_packets  & txq->tx_bytes changes are performed on
a single location, and not the right locking.

Fix is to take the appropriate struct netdev_queue pointer

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonet: net/core/dev.c cleanups
Eric Dumazet [Thu, 3 Sep 2009 08:29:39 +0000 (01:29 -0700)]
net: net/core/dev.c cleanups

Pure style cleanup patch before surgery :)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoatm/br2684: netif_stop_queue() when atm device busy and netif_wake_queue() when we...
Karl Hiramoto [Thu, 3 Sep 2009 06:26:39 +0000 (23:26 -0700)]
atm/br2684: netif_stop_queue() when atm device busy and netif_wake_queue() when we can send packets again.

This patch removes the call to dev_kfree_skb() when the atm device is busy.
Calling dev_kfree_skb() causes heavy packet loss then the device is under
heavy load, the more correct behavior should be to stop the upper layers,
then when the lower device can queue packets again wake the upper layers.

Signed-off-by: Karl Hiramoto <karl@hiramoto.org>
Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agofec: don't enable irqs in hard irq context
Uwe Kleine-König [Tue, 1 Sep 2009 23:14:16 +0000 (23:14 +0000)]
fec: don't enable irqs in hard irq context

fec_enet_mii, fec_enet_rx and fec_enet_tx are both only called by
fec_enet_interrupt in interrupt context.  So they must not use
spin_lock_irq/spin_unlock_irq.

This fixes:
WARNING: at kernel/lockdep.c:2140 trace_hardirqs_on_caller+0x130/0x194()
...

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Matt Waddel <Matt.Waddel@freescale.com>
Cc: netdev@vger.kernel.org
Cc: Tim Sander <tim01@vlsi.informatik.tu-darmstadt.de>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agofec: fix recursive locking of mii_lock
Uwe Kleine-König [Tue, 1 Sep 2009 23:14:15 +0000 (23:14 +0000)]
fec: fix recursive locking of mii_lock

mii_discover_phy is only called by fec_enet_mii (via mip->mii_func).  So
&fep->mii_lock is already held and mii_discover_phy must not call
mii_queue which locks &fep->mii_lock, too.

This was noticed by lockdep:

=============================================
[ INFO: possible recursive locking detected ]
2.6.31-rc8-00038-g37d0892 #109
---------------------------------------------
swapper/1 is trying to acquire lock:
 (&fep->mii_lock){-.....}, at: [<c01569f8>] mii_queue+0x2c/0xcc

but task is already holding lock:
 (&fep->mii_lock){-.....}, at: [<c0156328>] fec_enet_interrupt+0x78/0x460

other info that might help us debug this:
2 locks held by swapper/1:
 #0:  (rtnl_mutex){+.+.+.}, at: [<c0183534>] rtnl_lock+0x18/0x20
 #1:  (&fep->mii_lock){-.....}, at: [<c0156328>] fec_enet_interrupt+0x78/0x460

stack backtrace:
Backtrace:
[<c00226fc>] (dump_backtrace+0x0/0x108) from [<c01eac14>] (dump_stack+0x18/0x1c)
 r6:c781d118 r5:c03e41d8 r4:00000001
[<c01eabfc>] (dump_stack+0x0/0x1c) from [<c005bae4>] (__lock_acquire+0x1a20/0x1a88)
[<c005a0c4>] (__lock_acquire+0x0/0x1a88) from [<c005bbac>] (lock_acquire+0x60/0x74)
[<c005bb4c>] (lock_acquire+0x0/0x74) from [<c01edda8>] (_spin_lock_irqsave+0x54/0x68)
 r7:60000093 r6:c01569f8 r5:c785e468 r4:00000000
[<c01edd54>] (_spin_lock_irqsave+0x0/0x68) from [<c01569f8>] (mii_queue+0x2c/0xcc)
 r7:c785e468 r6:c0156b24 r5:600a0000 r4:c785e000
[<c01569cc>] (mii_queue+0x0/0xcc) from [<c0156b78>] (mii_discover_phy+0x54/0xa8)
 r8:00000002 r7:00000032 r6:c785e000 r5:c785e360 r4:c785e000
[<c0156b24>] (mii_discover_phy+0x0/0xa8) from [<c0156354>] (fec_enet_interrupt+0xa4/0x460)
 r5:c785e360 r4:c077a170
[<c01562b0>] (fec_enet_interrupt+0x0/0x460) from [<c0066674>] (handle_IRQ_event+0x48/0x120)
[<c006662c>] (handle_IRQ_event+0x0/0x120) from [<c0068438>] (handle_level_irq+0x94/0x11c)
...

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Matt Waddel <Matt.Waddel@freescale.com>
Cc: netdev@vger.kernel.org
Cc: Tim Sander <tim01@vlsi.informatik.tu-darmstadt.de>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoNET: Fix possible corruption in bpqether driver
Ralf Baechle [Thu, 3 Sep 2009 06:09:29 +0000 (23:09 -0700)]
NET: Fix possible corruption in bpqether driver

The bpq ether driver is modifying the data art of the skb by first
dropping the KISS byte (a command byte for the radio) then prepending the
length + 4 of the remaining AX.25 packet to be transmitted as a little
endian 16-bit number.  If the high byte of the length has a different
value than the dropped KISS byte users of clones of the skb may observe
this as corruption.  This was observed with by running listen(8) -a which
uses a packet socket which clones transmit packets.  The corruption will
then typically be displayed for as a KISS "TX Delay" command for AX.25
packets in the range of 252..508 bytes or any other KISS command for
yet larger packets.

Fixed by using skb_cow to create a private copy should the skb be cloned.
Using skb_cow also allows us to cleanup the old logic to ensure sufficient
headroom in the skb.

While at it, replace a return of 0 from bpq_xmit with the proper constant
NETDEV_TX_OK which is now being used everywhere else in this function.

Affected: all 2.2, 2.4 and 2.6 kernels.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reported-by: Jann Traschewski <jann@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoWARNING: some request_irq() failures ignored in el2_open()
roel kluin [Tue, 1 Sep 2009 06:24:53 +0000 (06:24 +0000)]
WARNING: some request_irq() failures ignored in el2_open()

Request_irq() may fail in different ways, handle accordingly.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotcp: replace hard coded GFP_KERNEL with sk_allocation
Wu Fengguang [Thu, 3 Sep 2009 06:45:45 +0000 (23:45 -0700)]
tcp: replace hard coded GFP_KERNEL with sk_allocation

This fixed a lockdep warning which appeared when doing stress
memory tests over NFS:

inconsistent {RECLAIM_FS-ON-W} -> {IN-RECLAIM_FS-W} usage.

page reclaim => nfs_writepage => tcp_sendmsg => lock sk_lock

mount_root => nfs_root_data => tcp_close => lock sk_lock =>
tcp_send_fin => alloc_skb_fclone => page reclaim

David raised a concern that if the allocation fails in tcp_send_fin(), and it's
GFP_ATOMIC, we are going to yield() (which sleeps) and loop endlessly waiting
for the allocation to succeed.

But fact is, the original GFP_KERNEL also sleeps. GFP_ATOMIC+yield() looks
weird, but it is no worse the implicit sleep inside GFP_KERNEL. Both could
loop endlessly under memory pressure.

CC: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
CC: David S. Miller <davem@davemloft.net>
CC: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonet/ethtool: Add support for the ethtool feature to flash firmware image from a speci...
Ajit Khaparde [Wed, 2 Sep 2009 17:02:55 +0000 (17:02 +0000)]
net/ethtool: Add support for the ethtool feature to flash firmware image from a specified file.

This patch adds support to flash a firmware image to a device using ethtool.
The driver gets the filename of the firmware image and flashes the image
using the request firmware path.

The region "on the chip" to be flashed can be specified by an option.
It is upto the device driver to enumerate the region number passed by ethtool,
to the region to be flashed.

The default behavior is to flash all the regions on the chip.

Signed-off-by: Ajit Khaparde <ajitk@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agodrivers: Kill now superfluous ->last_rx stores
Eric Dumazet [Mon, 31 Aug 2009 06:34:50 +0000 (06:34 +0000)]
drivers: Kill now superfluous ->last_rx stores

The generic packet receive code takes care of setting
netdev->last_rx when necessary, for the sake of the
bonding ARP monitor.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Neil Horman <nhorman@txudriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoip: Report qdisc packet drops
Eric Dumazet [Thu, 3 Sep 2009 01:05:33 +0000 (18:05 -0700)]
ip: Report qdisc packet drops

Christoph Lameter pointed out that packet drops at qdisc level where not
accounted in SNMP counters. Only if application sets IP_RECVERR, drops
are reported to user (-ENOBUFS errors) and SNMP counters updated.

IP_RECVERR is used to enable extended reliable error message passing,
but these are not needed to update system wide SNMP stats.

This patch changes things a bit to allow SNMP counters to be updated,
regardless of IP_RECVERR being set or not on the socket.

Example after an UDP tx flood
# netstat -s
...
IP:
    1487048 outgoing packets dropped
...
Udp:
...
    SndbufErrors: 1487048

send() syscalls, do however still return an OK status, to not
break applications.

Note : send() manual page explicitly says for -ENOBUFS error :

 "The output queue for a network interface was full.
  This generally indicates that the interface has stopped sending,
  but may be caused by transient congestion.
  (Normally, this does not occur in Linux. Packets are just silently
  dropped when a device queue overflows.) "

This is not true for IP_RECVERR enabled sockets : a send() syscall
that hit a qdisc drop returns an ENOBUFS error.

Many thanks to Christoph, David, and last but not least, Alexey !

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agovlan: multiqueue vlan device
Eric Dumazet [Thu, 3 Sep 2009 01:03:00 +0000 (18:03 -0700)]
vlan: multiqueue vlan device

vlan devices are currently not multi-queue capable.

We can do that with a new rtnl_link_ops method,
get_tx_queues(), called from rtnl_create_link()

This new method gets num_tx_queues/real_num_tx_queues
from real device.

register_vlan_device() is also handled.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonet: drop_monitor: make last_rx timestamp private
Neil Horman [Wed, 2 Sep 2009 21:37:45 +0000 (14:37 -0700)]
net: drop_monitor: make last_rx timestamp private

It was recently pointed out to me that the last_rx field of the
net_device structure wasn't updated regularly.  In fact only the
bonding driver really uses it currently.  Since the drop_monitor code
relies on the last_rx field to detect drops on recevie in hardware, We
need to find a more reliable way to rate limit our drop checks (so
that we don't check for drops on every frame recevied, which would be
inefficient.  This patch makes a last_rx timestamp that is private to
the drop monitor code and is updated for every device that we track.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
David S. Miller [Wed, 2 Sep 2009 21:18:09 +0000 (14:18 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-next-2.6

15 years agoath9k: Reconfigure beacon timers after the scan is completed.
Vivek Natarajan [Wed, 2 Sep 2009 10:20:55 +0000 (15:50 +0530)]
ath9k: Reconfigure beacon timers after the scan is completed.

Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
15 years agocfg80211: fix looping soft lockup in find_ie()
Bob Copeland [Tue, 1 Sep 2009 22:12:11 +0000 (18:12 -0400)]
cfg80211: fix looping soft lockup in find_ie()

The find_ie() function uses a size_t for the len parameter, and
directly uses len as a loop variable.  If any received packets
are malformed, it is possible for the decrease of len to overflow,
and since the result is unsigned, the loop will not terminate.
Change it to a signed int so the loop conditional works for
negative values.

This fixes the following soft lockup:

[38573.102007] BUG: soft lockup - CPU#0 stuck for 61s! [phy0:2230]
[38573.102007] Modules linked in: aes_i586 aes_generic fuse af_packet ipt_REJECT xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 xt_state iptable_filter ip_tables x_tables acpi_cpufreq binfmt_misc dm_mirror dm_region_hash dm_log dm_multipath dm_mod kvm_intel kvm uinput i915 arc4 ecb drm snd_hda_codec_idt ath5k snd_hda_intel hid_apple mac80211 usbhid appletouch snd_hda_codec snd_pcm ath cfg80211 snd_timer i2c_algo_bit ohci1394 video snd processor ieee1394 rfkill ehci_hcd sg sky2 backlight snd_page_alloc uhci_hcd joydev output ac thermal button battery sr_mod applesmc cdrom input_polldev evdev unix [last unloaded: scsi_wait_scan]
[38573.102007] irq event stamp: 2547724535
[38573.102007] hardirqs last  enabled at (2547724534): [<c1002ffc>] restore_all_notrace+0x0/0x18
[38573.102007] hardirqs last disabled at (2547724535): [<c10038f4>] apic_timer_interrupt+0x28/0x34
[38573.102007] softirqs last  enabled at (92950144): [<c103ab48>] __do_softirq+0x108/0x210
[38573.102007] softirqs last disabled at (92950274): [<c1348e74>] _spin_lock_bh+0x14/0x80
[38573.102007]
[38573.102007] Pid: 2230, comm: phy0 Tainted: G        W  (2.6.31-rc7-wl #8) MacBook1,1
[38573.102007] EIP: 0060:[<f8ea2d50>] EFLAGS: 00010292 CPU: 0
[38573.102007] EIP is at cmp_ies+0x30/0x180 [cfg80211]
[38573.102007] EAX: 00000082 EBX: 00000000 ECX: ffffffc1 EDX: d8efd014
[38573.102007] ESI: ffffff7c EDI: 0000004d EBP: eee2dc50 ESP: eee2dc3c
[38573.102007]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[38573.102007] CR0: 8005003b CR2: d8efd014 CR3: 01694000 CR4: 000026d0
[38573.102007] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[38573.102007] DR6: ffff0ff0 DR7: 00000400
[38573.102007] Call Trace:
[38573.102007]  [<f8ea2f8d>] cmp_bss+0xed/0x100 [cfg80211]
[38573.102007]  [<f8ea33e4>] cfg80211_bss_update+0x84/0x410 [cfg80211]
[38573.102007]  [<f8ea3884>] cfg80211_inform_bss_frame+0x114/0x180 [cfg80211]
[38573.102007]  [<f97255ff>] ieee80211_bss_info_update+0x4f/0x180 [mac80211]
[38573.102007]  [<f972b118>] ieee80211_rx_bss_info+0x88/0xf0 [mac80211]
[38573.102007]  [<f9739297>] ? ieee802_11_parse_elems+0x27/0x30 [mac80211]
[38573.102007]  [<f972b224>] ieee80211_rx_mgmt_probe_resp+0xa4/0x1c0 [mac80211]
[38573.102007]  [<f972bc59>] ieee80211_sta_rx_queued_mgmt+0x919/0xc50 [mac80211]
[38573.102007]  [<c1009707>] ? sched_clock+0x27/0xa0
[38573.102007]  [<c1009707>] ? sched_clock+0x27/0xa0
[38573.102007]  [<c105ffd0>] ? mark_held_locks+0x60/0x80
[38573.102007]  [<c1348be5>] ? _spin_unlock_irqrestore+0x55/0x70
[38573.102007]  [<c134baa5>] ? sub_preempt_count+0x85/0xc0
[38573.102007]  [<c1348bce>] ? _spin_unlock_irqrestore+0x3e/0x70
[38573.102007]  [<c12c1c0f>] ? skb_dequeue+0x4f/0x70
[38573.102007]  [<f972c021>] ieee80211_sta_work+0x91/0xb80 [mac80211]
[38573.102007]  [<c1009707>] ? sched_clock+0x27/0xa0
[38573.102007]  [<c134baa5>] ? sub_preempt_count+0x85/0xc0
[38573.102007]  [<c10479af>] worker_thread+0x18f/0x320
[38573.102007]  [<c104794e>] ? worker_thread+0x12e/0x320
[38573.102007]  [<c1348be5>] ? _spin_unlock_irqrestore+0x55/0x70
[38573.102007]  [<f972bf90>] ? ieee80211_sta_work+0x0/0xb80 [mac80211]
[38573.102007]  [<c104cbb0>] ? autoremove_wake_function+0x0/0x50
[38573.102007]  [<c1047820>] ? worker_thread+0x0/0x320
[38573.102007]  [<c104c854>] kthread+0x84/0x90
[38573.102007]  [<c104c7d0>] ? kthread+0x0/0x90
[38573.102007]  [<c1003ab7>] kernel_thread_helper+0x7/0x10

Cc: stable@kernel.org
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
15 years agowireless: remove mac80211 rate selection extra menu
Luis R. Rodriguez [Tue, 1 Sep 2009 15:22:46 +0000 (08:22 -0700)]
wireless: remove mac80211 rate selection extra menu

We can just display this upon enabling mac80211 with an
'if MAC80211 != n' check.

Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
15 years agowireless: update reg debug kconfig entry
Luis R. Rodriguez [Tue, 1 Sep 2009 15:22:43 +0000 (08:22 -0700)]
wireless: update reg debug kconfig entry

Refer to the wireless wiki for more information.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
15 years agowireless: update top level wireless driver entry
Luis R. Rodriguez [Tue, 1 Sep 2009 15:22:40 +0000 (08:22 -0700)]
wireless: update top level wireless driver entry

Change it to a menuconfig to give it some documentation, to
refer users to our wireless wiki for extra resources and
documentation. It seems our wiki is still obscure to some.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
15 years agonet: file_operations should be const
Stephen Hemminger [Tue, 1 Sep 2009 19:25:05 +0000 (19:25 +0000)]
net: file_operations should be const

All instances of file_operations should be const.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoinet: inet_connection_sock_af_ops const
Stephen Hemminger [Tue, 1 Sep 2009 19:25:04 +0000 (19:25 +0000)]
inet: inet_connection_sock_af_ops const

The function block inet_connect_sock_af_ops contains no data
make it constant.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotcp: MD5 operations should be const
Stephen Hemminger [Tue, 1 Sep 2009 19:25:03 +0000 (19:25 +0000)]
tcp: MD5 operations should be const

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonet: seq_operations should be const
Stephen Hemminger [Tue, 1 Sep 2009 19:25:02 +0000 (19:25 +0000)]
net: seq_operations should be const

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonetdev: drivers should make ethtool_ops const
Stephen Hemminger [Wed, 2 Sep 2009 08:03:33 +0000 (01:03 -0700)]
netdev: drivers should make ethtool_ops const

No need to put ethtool_ops in data, they should be const.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Update version to 3.102
Matt Carlson [Tue, 1 Sep 2009 13:22:42 +0000 (13:22 +0000)]
tg3: Update version to 3.102

This patch updates the tg3 version to 3.102.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Add MDIO bus address assignments
Matt Carlson [Tue, 1 Sep 2009 13:21:36 +0000 (13:21 +0000)]
tg3: Add MDIO bus address assignments

The 5717 is a dual port chip that has a shared MDIO bus design.  While
it is impossible for one function to interface with the wrong phy, that
function still needs to know which MDIO bus address to use when
interfacing with its own phy.  This patch adds code to determine which
MDIO bus address to use.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Add 5717 NVRAM detection routines
Matt Carlson [Tue, 1 Sep 2009 13:20:17 +0000 (13:20 +0000)]
tg3: Add 5717 NVRAM detection routines

This patch adds NVRAM detection routines for the 5717.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Add 5717 asic rev
Matt Carlson [Tue, 1 Sep 2009 13:19:53 +0000 (13:19 +0000)]
tg3: Add 5717 asic rev

This patch adds the 5717 asic rev.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Assign rx ret producer indexes by vector
Matt Carlson [Tue, 1 Sep 2009 13:19:05 +0000 (13:19 +0000)]
tg3: Assign rx ret producer indexes by vector

When RSS is enabled, the status block format changes slightly.  The
"rx_jumbo_consumer", "reserved", and "rx_mini_consumer" members get
mapped to the other three rx return ring producer indexes.  This patch
introduces a new per-interrupt member which identifies which location
in the status block a particular vector should look for return ring
updates.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Adjust RSS ring allocation strategies
Matt Carlson [Tue, 1 Sep 2009 13:16:33 +0000 (13:16 +0000)]
tg3: Adjust RSS ring allocation strategies

When multivector RSS is enabled, the first interrupt vector is only used
to report link interrupts and error conditions.  This patch changes the
code so that rx and tx ring resources are not allocated for this vector.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Add RSS support
Matt Carlson [Tue, 1 Sep 2009 13:13:00 +0000 (13:13 +0000)]
tg3: Add RSS support

This patch adds code needed to enable RSS.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Add coalesce parameters for msix vectors
Matt Carlson [Tue, 1 Sep 2009 13:12:00 +0000 (13:12 +0000)]
tg3: Add coalesce parameters for msix vectors

This patch adds code to tune the coalescing parameters for the other
msix vectors.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Enable NAPI instances for other int vectors
Matt Carlson [Tue, 1 Sep 2009 13:10:19 +0000 (13:10 +0000)]
tg3: Enable NAPI instances for other int vectors

This patch adds code to enable and disable the rest of the NAPI
instances.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Add TSS support
Matt Carlson [Tue, 1 Sep 2009 13:09:39 +0000 (13:09 +0000)]
tg3: Add TSS support

This patch exposes the additional transmit rings to the kernel and makes
the necessary modifications to transmit, open, and close paths.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Update intmbox and coal_now for msix
Matt Carlson [Tue, 1 Sep 2009 13:08:58 +0000 (13:08 +0000)]
tg3: Update intmbox and coal_now for msix

This patch fixes up two spots that need attention now that msix support
has been added.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Add tx and rx ring resource tracking
Matt Carlson [Tue, 1 Sep 2009 13:04:37 +0000 (13:04 +0000)]
tg3: Add tx and rx ring resource tracking

This patch adds code to assign status block, tx producer ring and rx
return ring resources needed for the other interrupt vectors.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Add mailbox assignments
Matt Carlson [Tue, 1 Sep 2009 12:58:41 +0000 (12:58 +0000)]
tg3: Add mailbox assignments

The 5717 assigns mailbox locations to interrupt vectors in a rather
non-intuitive way.  (Much of the complexity stems from legacy
compatibility issues.)  This patch implements the assignment scheme.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Add MSI-X support
Matt Carlson [Tue, 1 Sep 2009 12:55:46 +0000 (12:55 +0000)]
tg3: Add MSI-X support

This patch adds MSI-X support.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Add support code around kernel interrupt API
Matt Carlson [Tue, 1 Sep 2009 12:55:02 +0000 (12:55 +0000)]
tg3: Add support code around kernel interrupt API

This patch adds code to support multiple interrupt vectors around the
kernel's interrupt API.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Create tg3_rings_reset()
Matt Carlson [Tue, 1 Sep 2009 12:53:31 +0000 (12:53 +0000)]
tg3: Create tg3_rings_reset()

This patch moves most of the chip ring setup logic into a separate
function.  This will make it easier to verify the multi ring setup
changes.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: Add per-int coalesce now member
Matt Carlson [Tue, 1 Sep 2009 12:51:13 +0000 (12:51 +0000)]
tg3: Add per-int coalesce now member

Each interrupt vector has its own bit in the host coalescing register to
force that vector's status block to be updated and generate an
interrupt.  This patch adds a member to the per-interrupt structure
that records which bit belongs to that vector.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotg3: inline tg3_cond_int()
Matt Carlson [Tue, 1 Sep 2009 12:47:49 +0000 (12:47 +0000)]
tg3: inline tg3_cond_int()

This patch inlines the code of tg3_cond_int() into the function's only
callsite.  This prep work makes the following patch cleaner.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
David S. Miller [Wed, 2 Sep 2009 07:32:56 +0000 (00:32 -0700)]
Merge branch 'master' of /linux/kernel/git/davem/net-2.6

Conflicts:
drivers/net/yellowfin.c

15 years agoipv6: ip6_push_pending_frames() should increment IPSTATS_MIB_OUTDISCARDS
Eric Dumazet [Wed, 2 Sep 2009 01:37:16 +0000 (18:37 -0700)]
ipv6: ip6_push_pending_frames() should increment IPSTATS_MIB_OUTDISCARDS

qdisc drops should be notified to IP_RECVERR enabled sockets, as done in IPV4.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agodrop_monitor: fix trace_napi_poll_hit()
Xiao Guangrong [Sun, 30 Aug 2009 20:10:43 +0000 (20:10 +0000)]
drop_monitor: fix trace_napi_poll_hit()

The net_dev of backlog napi is NULL, like below:

__get_cpu_var(softnet_data).backlog.dev == NULL

So, we should check it in napi tracepoint's probe function

Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agopkt_sched: Revert tasklet_hrtimer changes.
David S. Miller [Wed, 2 Sep 2009 00:59:25 +0000 (17:59 -0700)]
pkt_sched: Revert tasklet_hrtimer changes.

These are full of unresolved problems, mainly that conversions don't
work 1-1 from hrtimers to tasklet_hrtimers because unlike hrtimers
tasklets can't be killed from softirq context.

And when a qdisc gets reset, that's exactly what we need to do here.

We'll work this out in the net-next-2.6 tree and if warranted we'll
backport that work to -stable.

This reverts the following 3 changesets:

a2cb6a4dd470d7a64255a10b843b0d188416b78f
("pkt_sched: Fix bogon in tasklet_hrtimer changes.")

38acce2d7983632100a9ff3fd20295f6e34074a8
("pkt_sched: Convert CBQ to tasklet_hrtimer.")

ee5f9757ea17759e1ce5503bdae2b07e48e32af9
("pkt_sched: Convert qdisc_watchdog to tasklet_hrtimer")

Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoxilinx_emaclite: Fix permissions on driver sources.
David S. Miller [Wed, 2 Sep 2009 00:50:50 +0000 (17:50 -0700)]
xilinx_emaclite: Fix permissions on driver sources.

Noticed by Michal Simek.

Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonet: sk_free() should be allowed right after sk_alloc()
Jarek Poplawski [Sun, 30 Aug 2009 23:15:36 +0000 (23:15 +0000)]
net: sk_free() should be allowed right after sk_alloc()

After commit 2b85a34e911bf483c27cfdd124aeb1605145dc80
(net: No more expensive sock_hold()/sock_put() on each tx)
sk_free() frees socks conditionally and depends
on sk_wmem_alloc being set e.g. in sock_init_data(). But in some
cases sk_free() is called earlier, usually after other alloc errors.

Fix is to move sk_wmem_alloc initialization from sock_init_data()
to sk_alloc() itself.

Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonet: make neigh_ops constant
Stephen Hemminger [Tue, 1 Sep 2009 11:13:19 +0000 (11:13 +0000)]
net: make neigh_ops constant

These tables are never modified at runtime. Move to read-only
section.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoau1000_eth: possible NULL dereference of aup->mii_bus->irq in au1000_probe()
roel kluin [Sun, 30 Aug 2009 22:40:15 +0000 (22:40 +0000)]
au1000_eth: possible NULL dereference of aup->mii_bus->irq in au1000_probe()

aup->mii_bus->irq allocation may fail, prevent a dereference of NULL.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoRTO connection timeout: sysctl documentation update
Damian Lukowski [Tue, 1 Sep 2009 10:24:04 +0000 (10:24 +0000)]
RTO connection timeout: sysctl documentation update

This patch updates the sysctl documentation concerning the interpretation
of tcp_retries{1,2} and tcp_orphan_retries.

Signed-off-by: Damian Lukowski <damian@tvk.rwth-aachen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoRTO connection timeout: coding style fixes and comments
Damian Lukowski [Tue, 1 Sep 2009 10:24:00 +0000 (10:24 +0000)]
RTO connection timeout: coding style fixes and comments

This patch affects the retransmits_timed_out() function.

Changes:
1) Variables have more meaningful names
2) retransmits_timed_out() has an introductionary comment.
3) Small coding style changes.

Signed-off-by: Damian Lukowski <damian@tvk.rwth-aachen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agosky2: Use 32bit read to read Y2_VAUX_AVAIL
Mike McCormack [Tue, 1 Sep 2009 03:54:27 +0000 (03:54 +0000)]
sky2: Use 32bit read to read Y2_VAUX_AVAIL

B0_CTST is a 24bit register according to the vendor driver (sk98lin).
A 16bit read on B0_CTST will always return 0 for Y2_VAUX_AVAIL (1<<16),
 so use a 32bit read when testing Y2_VAUX_AVAIL

Signed-off-by: Mike McCormack <mikem@ring3k.org>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agosky2: Create buffer alloc and free helpers
Mike McCormack [Tue, 1 Sep 2009 03:21:35 +0000 (03:21 +0000)]
sky2: Create buffer alloc and free helpers

Refactor similar two sections of code that free buffers into one.
Only call tx_init if all buffer allocations succeed.

Signed-off-by: Mike McCormack <mikem@ring3k.org>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agosky2: fix management of driver LED
Stephen Hemminger [Mon, 31 Aug 2009 07:31:41 +0000 (07:31 +0000)]
sky2: fix management of driver LED

Observed by Mike McCormack.

The LED bit here is just a software controlled value used to
turn on one of the LED's on some boards. The register value was wrong,
which could have been causing some power control issues.
Get rid of problematic define use the correct mask.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotun: reuse struct sock fields
Michael S. Tsirkin [Sun, 30 Aug 2009 07:04:42 +0000 (07:04 +0000)]
tun: reuse struct sock fields

As tun always has an embeedded struct sock,
use sk and sk_receive_queue fields instead of
duplicating them in tun_struct.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonetns: embed ip6_dst_ops directly
Alexey Dobriyan [Sat, 29 Aug 2009 01:34:49 +0000 (01:34 +0000)]
netns: embed ip6_dst_ops directly

struct net::ipv6.ip6_dst_ops is separatedly dynamically allocated,
but there is no fundamental reason for it. Embed it directly into
struct netns_ipv6.

For that:
* move struct dst_ops into separate header to fix circular dependencies
I honestly tried not to, it's pretty impossible to do other way
* drop dynamical allocation, allocate together with netns

For a change, remove struct dst_ops::dst_net, it's deducible
by using container_of() given dst_ops pointer.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agobonding: use compare_ether_addr_64bits() in ALB
Eric Dumazet [Tue, 1 Sep 2009 06:31:18 +0000 (06:31 +0000)]
bonding: use compare_ether_addr_64bits() in ALB

We can speedup ether addresses compares using compare_ether_addr_64bits()
instead of memcmp(). We make sure all operands are at least 8 bytes long and
16bits aligned (or better, long word aligned if possible)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Reviewed-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agomacvlan: Use compare_ether_addr_64bits()
Eric Dumazet [Tue, 1 Sep 2009 05:46:05 +0000 (05:46 +0000)]
macvlan: Use compare_ether_addr_64bits()

To speedup ether addresses compares, we can use compare_ether_addr_64bits()
(all operands are guaranteed to be at least 8 bytes long)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>