Commit Graph

267 Commits

Author SHA1 Message Date
Divy Le Ray 4d8cd00260 cxgb3: add control to access embedded images
Update contol path between cxgb3 and ULP modules (iWARP, iSCSI)
to provide access to firware and protocol engine info.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-26 01:16:39 -08:00
Hannes Eder af8eca5cbb drivers/net/cxgb3: comment out dead code
The function 'vsc8211_set_speed_duplex' is not used, so comment it
out.  For 'vsc8211_set_automdi' the function 'vsc8211_set_speed_duplex'
is the only caller, so comment it out as well.

Fix this (sparse) warning:

  drivers/net/cxgb3/vsc8211.c:269: warning: 'vsc8211_set_automdi' defined but not used
  drivers/net/cxgb3/vsc8211.c:295:5: warning: symbol 'vsc8211_set_speed_duplex' was not declared. Should it be static?

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-25 23:59:28 -08:00
Karen Xie a109a5b916 cxgb3: manage private iSCSI IP address
The accelerated iSCSI traffic could use a private IP address unknown to the OS:
- The IP address is required in both drivers to manage ARP requests and connection set up.
- Added an control call to retrieve the ip address.
- Reply to ARP requests dedicated to the private IP address.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Karen Xie <kxie@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-18 22:56:20 -08:00
Divy Le Ray 8207befa19 cxgb3: untie strict FW matching
The NIC driver can work with mutliple versions of the FW.
Let the driver load when the embedded FW does not match,
and the FW update mechanism failed.
The iWARP module will make its own loading decision.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-16 01:51:47 -08:00
Divy Le Ray 82ad332974 cxgb3: Add multiple Tx queue support.
Implement NIC Tx multiqueue.
Bump up driver version.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-16 01:09:39 -08:00
Roland Dreier c5419e6f05 cxgb3: Fix sparse warning and micro-optimize is_pure_response()
The function is_pure_response() does "ntohl(var) & const" and then
essentially just tests whether the result is 0 or not; this can be done
more efficiently by computing "var & htonl(const)" instead and doing the
byte swap at compile time instead of run time.

This change slightly shrinks the compiled code; eg on x86-64 we save a
couple of bswapl instructions:

add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-8 (-8)
function                                     old     new   delta
t3_sge_intr_msix_napi                        544     536      -8

and this also has the pleasant side effect of fixing a sparse warning:

    drivers/net/cxgb3/sge.c:2313:15: warning: restricted degrades to integer

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-28 21:55:42 -08:00
Divy Le Ray 851fd7bd88 cxgb3: Update FW loading path.
Update FW loading path to accomodate in-kernel images location

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-26 15:38:36 -08:00
Divy Le Ray 5256554489 cxgb3: avoid potential memory leak.
Add consistency in alloc_ring() parameter checking
to avoid potential memory leaks.
alloc_ring() callers are correct fo far.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-26 15:35:59 -08:00
Divy Le Ray 43a944f373 cxgb3: set hard_xmit in the netdev_ops
Fix t3_eth_xmit() missing into the netdev_ops structure.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-26 15:35:26 -08:00
Stephen Hemminger 008298231a netdev: add more functions to netdevice ops
This patch moves neigh_setup and hard_start_xmit into the network device ops
structure. For bisection, fix all the previously converted drivers as well.
Bonding driver took the biggest hit on this.

Added a prefetch of the hard_start_xmit in the fast path to try and reduce
any impact this would have.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-20 20:14:53 -08:00
Stephen Hemminger dd7526960e cxgb3: convert to net_device_ops
Convert this driver to network device ops. Compile tested only.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 22:42:49 -08:00
David S. Miller 198d6ba4d7 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/isdn/i4l/isdn_net.c
	fs/cifs/connect.c
2008-11-18 23:38:23 -08:00
Steve Wise cf3760dad5 RDMA/cxgb3: deadlock in iw_cxgb3 can cause hang when configuring interface.
When the iw_cxgb3 module's cxgb3_client "add" func gets called by the
cxgb3 module, the iwarp driver ends up calling the ethtool ops get_drvinfo
function in cxgb3 to get the fw version and other info.  Currently the
iwarp driver grabs the rtnl lock around this down call to serialize.
As of 2.6.27 or so, things changed such that the rtnl lock is held around
the call to the netdev driver open function.  Also the cxgb3_client "add"
function doesn't get called if the device is down.

So, if you load cxgb3, then load iw_cxgb3, then ifconfig up the device,
the iw_cxgb3 add func gets called with the rtnl_lock held.   If you
load cxgb3, ifconfig up the device, then load iw_cxgb3, the add func
gets called without the rtnl_lock held.  The former causes the deadlock,
the latter does not.

In addition, there are iw_cxgb3 sysfs handlers that also can call
down into cxgb3 to gather the fw and hw versions.  These can be called
concurrently on different processors and at any time.  Thus we need to
push this serialization down in the cxgb3 driver get_drvinfo func.

The fix is to remove rtnl lock usage, and use a per-device lock in cxgb3.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-11 03:52:10 -05:00
Divy Le Ray f9ee388296 cxgb3 - Limit multiqueue setting to msi-x
Allow multiqueue setting in MSI-X mode only

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-11 03:50:43 -05:00
Divy Le Ray 9f64306b8a cxgb3 - eeprom read fixes
Protect against invalid phy entries in the eeprom.
Extend eeprom access timeout.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-11-11 03:50:36 -05:00
David S. Miller babcda74e9 drivers/net: 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.

Drivers need not do it any more.

Some cases had to be skipped over because the drivers
were making use of the ->last_rx value themselves.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-03 21:11:17 -08:00
Divy Le Ray 04ecb07241 cxgb3 - enable lro control through ethtool
Implement ethtool's get_flags and set_flags methods.
It enables ethtool to control the LRO settings.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-31 00:52:51 -04:00
Roland Dreier 6d329af996 cxgb3: Fix kernel crash caused by uninitialized l2t_entry.arpq
Commit 147e70e6 ("cxgb3: Use SKB list interfaces instead of home-grown
implementation.") causes a crash in t3_l2t_send_slow() when an iWARP
connection request is received.  This is because the new l2t_entry.arpq
skb queue is never initialized, and therefore trying to add an skb to
it causes a NULL dereference.  With the old code there was no need to
initialize the queues because the l2t_entry structures were zeroed,
and the code used NULL to mean empty.

Fix this by adding __skb_queue_head_init() when all the l2t_entry
structures get allocated.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-10-22 06:22:14 -04:00
Divy Le Ray a02d44a02b cxgb3: extend copyrights to 2008
Update copyright banner to 2008.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-13 18:47:30 -07:00
Divy Le Ray fe642ebc2d cxgb3: update driver version
Add a field to the driver versioning info.
Update version to 1.1.0.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-13 18:47:02 -07:00
Divy Le Ray 0ce2f03bad cxgb3: Add 1G fiber support
Add support for 1G optical Vitesse PHY.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 17:40:28 -07:00
Divy Le Ray 1e8820256f cxgb3: Support for Aeluros 2005 PHY
Add support for SR PHY.
Auto-detect phy module type, and report type changes.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 17:40:07 -07:00
Divy Le Ray 9b1e36566c cxgb3: commnonize LASI phy code
Add generic code to manage interrupt driven PHYs.
Do not reset the phy after link parameters update,
the new values might get lost.
Return early from link change notification
when the link parameters remain unchanged.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 17:39:31 -07:00
Divy Le Ray f231e0a5a2 cxgb3: More flexible support for PHY interrupts.
Do not require PHY interrupts to be connected to GPIs in ascending order.
Base interrupt availability both on PHYs supporting them and on GPIs being
hooked up.  Allows boards to specify interrupt GPIs though the PHYs don't
use them.

Remove spurious PHY interrupts due to clearing T3DBG interrupts before
setting their polarity.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 17:39:00 -07:00
Divy Le Ray 044979827e cxgb3: simplify port type struct and usage
Second step in overall phy layer reorganization.
Clean up the port_type_info structure.
Support coextistence of clause 22 and clause 45 MDIO devices.
Select the type of MDIO transaction on a per transaction basis.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 17:38:29 -07:00
Divy Le Ray 78e4689e90 cxgb3: allow for PHY reset status
First step towards overall PHY layering re-organization.
Allow a status return when a PHY is reset.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 17:38:01 -07:00
Divy Le Ray 8c26376112 cxgb3: Allocate multiqueues at init time
Allocate a queue set per core, up to the maximum of available qsets.
Share the queue sets on multi port adapters.
Rename MSI-X interrupt vectors ethX-N, N being the queue set number.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 17:37:33 -07:00
Divy Le Ray 20d3fc1150 cxgb3: reset the adapter on fatal error
when a fatal error occurs, bring ports down, reset the chip,
and bring ports back up.

Factorize code used for both EEH and fatal error recovery.
Fix timer usage when bringing up/resetting sge queue sets.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 17:36:03 -07:00
Divy Le Ray 0ca41c0413 [2.6.28,1/1] cxgb3 - fix race in EEH
A SGE queue set timer might access registers while in EEH recovery,
triggering an EEH error loop. Stop all timers early in EEH process.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-08 15:57:17 -07:00
Harvey Harrison b39d66a81f drivers/net: replace __FUNCTION__ with __func__
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-09-24 18:59:00 -04:00
Divy Le Ray 004f23b9d3 cxgb3 - remove duplicate tests in lro
The generic lro code checks TCP flags/options.
Remove duplicate tests done in the driver.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-09-24 18:58:56 -04:00
David S. Miller 147e70e62f cxgb3: Use SKB list interfaces instead of home-grown implementation.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-22 01:29:52 -07:00
Steve Wise 8051367586 cxgb3: Allow 64KB firmware images.
Starting with FW version 7.0, the driver needs to allow larger images.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-29 17:48:42 -04:00
FUJITA Tomonori 8d8bb39b9e dma-mapping: add the device argument to dma_mapping_error()
Add per-device dma_mapping_ops support for CONFIG_X86_64 as POWER
architecture does:

This enables us to cleanly fix the Calgary IOMMU issue that some devices
are not behind the IOMMU (http://lkml.org/lkml/2008/5/8/423).

I think that per-device dma_mapping_ops support would be also helpful for
KVM people to support PCI passthrough but Andi thinks that this makes it
difficult to support the PCI passthrough (see the above thread).  So I
CC'ed this to KVM camp.  Comments are appreciated.

A pointer to dma_mapping_ops to struct dev_archdata is added.  If the
pointer is non NULL, DMA operations in asm/dma-mapping.h use it.  If it's
NULL, the system-wide dma_ops pointer is used as before.

If it's useful for KVM people, I plan to implement a mechanism to register
a hook called when a new pci (or dma capable) device is created (it works
with hot plugging).  It enables IOMMUs to set up an appropriate
dma_mapping_ops per device.

The major obstacle is that dma_mapping_error doesn't take a pointer to the
device unlike other DMA operations.  So x86 can't have dma_mapping_ops per
device.  Note all the POWER IOMMUs use the same dma_mapping_error function
so this is not a problem for POWER but x86 IOMMUs use different
dma_mapping_error functions.

The first patch adds the device argument to dma_mapping_error.  The patch
is trivial but large since it touches lots of drivers and dma-mapping.h in
all the architecture.

This patch:

dma_mapping_error() doesn't take a pointer to the device unlike other DMA
operations.  So we can't have dma_mapping_ops per device.

Note that POWER already has dma_mapping_ops per device but all the POWER
IOMMUs use the same dma_mapping_error function.  x86 IOMMUs use device
argument.

[akpm@linux-foundation.org: fix sge]
[akpm@linux-foundation.org: fix svc_rdma]
[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix bnx2x]
[akpm@linux-foundation.org: fix s2io]
[akpm@linux-foundation.org: fix pasemi_mac]
[akpm@linux-foundation.org: fix sdhci]
[akpm@linux-foundation.org: build fix]
[akpm@linux-foundation.org: fix sparc]
[akpm@linux-foundation.org: fix ibmvscsi]
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Muli Ben-Yehuda <muli@il.ibm.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-26 12:00:03 -07:00
David S. Miller 49997d7515 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	Documentation/powerpc/booting-without-of.txt
	drivers/atm/Makefile
	drivers/net/fs_enet/fs_enet-main.c
	drivers/pci/pci-acpi.c
	net/8021q/vlan.c
	net/iucv/iucv.c
2008-07-18 02:39:39 -07:00
Steve Wise 4ab928f692 RDMA/cxgb3: Fixes for zero STag
Handling the zero STag in receive work request requires some extra
logic in the driver:

 - Only set the QP_PRIV bit for kernel mode QPs.

- Add a zero STag build function for recv wrs. The uP needs a PBL
  allocated and passed down in the recv WR so it can construct a HW
  PBL for the zero STag S/G entries.  Note: we need to place a few
  restrictions on zero STag usage because of this:

  1) all SGEs in a recv WR must either be zero STag or not.  No mixing.

  2) an individual SGE length cannot exceed 128MB for a zero-stag SGE.
     This should be OK since it's not really practical to allocate
     such a large chunk of pinned contiguous DMA mapped memory.

- Add an optimized non-zero-STag recv wr format for kernel users.
  This is needed to optimize both zero and non-zero STag cracking in
  the recv path for kernel users.

 - Remove the iwch_ prefix from the static build functions.

 - Bump required FW version.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
2008-07-14 23:48:53 -07:00
Steve Wise 14cc180f7b RDMA/cxgb3: Add support for protocol statistics
- Add a new rdma ctl command called RDMA_GET_MIB to the cxgb3 low
  level driver to obtain the protocol mib from the rnic hardware.

- Add new iw_cxgb3 provider method to get the MIB from the low level
  driver.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-14 23:48:48 -07:00
Karen Xie 9439f74944 cxgb3 - Add iscsi support
Add iSCSI (S3xx) support.

Signed-off-by: Karen Xie <kxie@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:33 -04:00
David Woodhouse 2c733a1678 cxgb3: treat firmware data as const
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-07-10 14:26:26 +01:00
Patrick McHardy 22d1ba74bb vlan: move struct vlan_dev_info to private header
Hide struct vlan_dev_info from drivers to prevent them from growing
more creative ways to use it. Provide accessors for the two drivers
that currently use it.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 03:23:57 -07:00
Divy Le Ray 8f85cd7fef cxgb3 - add missing adapter type for RDMA
T3C added support is now reflected to the RDMA driver.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-06-24 22:59:33 -04:00
Divy Le Ray b47385bd4f cxgb3 - Add LRO support
Add LRO support.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-22 06:34:13 -04:00
Divy Le Ray 7385ecf339 cxgb3 - Add page support to jumbo frame Rx queue
Add page support to Jumbo frame Rx queues.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-22 06:34:11 -04:00
Divy Le Ray b1fb1f280d cxgb3 - Fix dma mapping error path
Take potential dma mapping errors in account.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-22 06:34:10 -04:00
Divy Le Ray 204e2f98c2 cxgb3 - fix EEH
Reset the chip when the PCI link goes down.
Preserve the napi structure when a sge qset's resources are freed.
Replay only HW initialization when the chip comes out of reset.

Signed-off-by: Divy Le ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-13 01:31:37 -04:00
Divy Le Ray 48c4b6dbb7 cxgb3 - fix port up/down error path
Fix faiures path when ports are stopped and restarted
in EEH recovery.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-13 01:31:37 -04:00
Alan Cox 1b3aa7afb6 cxgb3: Use CAP_SYS_RAWIO for firmware
Otherwise theoretically at least

	CAP_NET_ADMIN
	Reload new firmware
	Wait..
	Firmware patches kernel

So it should be CAY_SYS_RAWIO - not that I suspect this is in fact a
credible attack vector!

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-06 12:27:53 -04:00
Steve Wise f8b0dfd152 RDMA/cxgb3: Support peer-2-peer connection setup
Open MPI, Intel MPI and other applications don't respect the iWARP
requirement that the client (active) side of the connection send the
first RDMA message.  This class of application connection setup is
called peer-to-peer.  Typically once the connection is setup, _both_
sides want to send data.

This patch enables supporting peer-to-peer over the chelsio RNIC by
enforcing this iWARP requirement in the driver itself as part of RDMA
connection setup.

Connection setup is extended, when the peer2peer module option is 1,
such that the MPA initiator will send a 0B Read (the RTR) just after
connection setup.  The MPA responder will suspend SQ processing until
the RTR message is received and reply-to.

In the longer term, this will be handled in a standardized way by
enhancing the MPA negotiation so peers can indicate whether they
want/need the RTR and what type of RTR (0B read, 0B write, or 0B send)
should be sent.  This will be done by standardizing a few bits of the
private data in order to negotiate all this.  However this patch
enables peer-to-peer applications now and allows most of the required
firmware and driver changes to be done and tested now.

Design:

 - Add a module option, peer2peer, to enable this mode.

 - New firmware support for peer-to-peer mode:

	- a new bit in the rdma_init WR to tell it to do peer-2-peer
	  and what form of RTR message to send or expect.

	- process _all_ preposted recvs before moving the connection
	  into rdma mode.

	- passive side: defer completing the rdma_init WR until all
	  pre-posted recvs are processed.  Suspend SQ processing until
	  the RTR is received.

	- active side: expect and process the 0B read WR on offload TX
	  queue. Defer completing the rdma_init WR until all
	  pre-posted recvs are processed.  Suspend SQ processing until
	  the 0B read WR is processed from the offload TX queue.

 - If peer2peer is set, driver posts 0B read request on offload TX
   queue just after posting the rdma_init WR to the offload TX queue.

 - Add CQ poll logic to ignore unsolicitied read responses.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-04-29 13:46:52 -07:00
Matthew Wilcox 5f090dcb4d net: Remove unnecessary inclusions of asm/semaphore.h
None of these files use any of the functionality promised by
asm/semaphore.h.  It's possible that they rely on it dragging in some
unrelated header file, but I can't build all these files, so we'll have
fix any build failures as they come up.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2008-04-18 22:15:50 -04:00
Dan Noe d96a51f6b8 cxgb3: Fix __must_check warning with dev_dbg.
Fix the warning:
drivers/net/cxgb3/cxgb3_main.c: In function ‘offload_open’:
drivers/net/cxgb3/cxgb3_main.c:936: warning: ignoring return value of
 ‘sysfs_create_group’, declared with attribute warn_unused_result

Now the return value is checked; if sysfs_create_group() returns failure,
a warning is printed using dev_dbg, and the code continues as before.  Use
of dev_dbg ensures printk is not needlessly included unless desired for
debugging.

Signed-off-by: Dan Noe <dpn@isomerica.net>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-17 15:31:32 -04:00
David S. Miller 8e8e43843b Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/usb/rndis_host.c
	drivers/net/wireless/b43/dma.c
	net/ipv6/ndisc.c
2008-03-27 18:48:56 -07:00
Al Viro fa3a6cb4a6 annotate cxgb3 (ab)uses of skb->priority/skb->csum
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-26 00:18:46 -04:00
Roland Dreier b1186dee3e cxgb3: Fix lockdep problems with sge.reg_lock
Using iWARP with a Chelsio T3 NIC generates the following lockdep warning:

    =================================
    [ INFO: inconsistent lock state ]
    2.6.25-rc6 #50
    ---------------------------------
    inconsistent {softirq-on-W} -> {in-softirq-W} usage.
    swapper/0 [HC0[0]:SC1[1]:HE0:SE0] takes:
     (&adap->sge.reg_lock){-+..}, at: [<ffffffff880e5ee2>] cxgb_offload_ctl+0x3af/0x507 [cxgb3]

The problem is that reg_lock is used with plain spin_lock() in
drivers/net/cxgb3/sge.c but is used with spin_lock_irqsave() in
drivers/net/cxgb3/cxgb3_offload.c.  This is technically a false
positive, since the uses in sge.c are only in the initialization and
cleanup paths and cannot overlap with any use in interrupt context.

The best fix is probably just to use spin_lock_irq() with reg_lock in
sge.c.  Even though it's not strictly required for correctness, it
avoids triggering lockdep and the extra overhead of disabling
interrupts is not important at all in the initialization and cleanup
slow paths.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-25 23:42:05 -04:00
David S. Miller 577f99c1d0 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/wireless/rt2x00/rt2x00dev.c
	net/8021q/vlan_dev.c
2008-03-18 00:37:55 -07:00
Divy Le Ray cd7e903440 cxgb3: Fix transmit queue stop mechanism
The last change in the Tx queue stop mechanism opens a window
where the Tx queue might be stopped after pending credits
returned.

Tx credits are returned via a control message generated by the HW.
It returns tx credits on demand, triggered by a completion bit
set in selective transmit packet headers.

The current code can lead to the Tx queue stopped
with all pending credits returned, and the current frame
not triggering a credit return. The Tx queue will then never be
awaken.

The driver could alternatively request a completion for packets
that stop the queue. It's however safer at this point to go back
to the pre-existing behaviour.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-17 08:07:01 -04:00
YOSHIFUJI Hideaki 8082c37cdc [NET] NEIGHBOUR: Remove unpopular neigh_is_connected().
neigh_is_connected() is not popular at all, and the only user
drivers/net/cxgb3/l2t.c:t3_l2t_update() also have raw (expanded) expression.
Let's expand it and remove the inline function.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
2008-03-04 15:18:23 +09:00
Steve Wise 4eb61e0231 cxgb3: Handle ARP completions that mark neighbors stale.
When ARP completes due to a request rather than a reply the neighbor is
marked NUD_STALE instead of reachable (see arp_process()).  The handler
for the resulting netevent needs to check also for NUD_STALE.

Failure to use the arp entry can cause RDMA connection failures.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Acked-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-11 11:09:17 -05:00
Krishna Kumar a8cc21f646 Optimize cxgb3 xmit path (a bit)
1. Add common code for stopping queue.
	2. No need to call netif_stop_queue followed by netif_wake_queue (and
	   infact a netif_start_queue could have been used instead), instead
	   call stop_queue if required, and remove code under USE_GTS macro.
	3. There is no need to check for netif_queue_stopped, as the network
	   core guarantees that for us (I am sure every driver could remove
	   that check, eg e1000 - I have tested that path a few billion times
	   with about a few hundred thousand qstops but the condition never
	   hit even once).

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-02-11 10:44:28 -05:00
Christoph Lameter 9e2779fa28 is_vmalloc_addr(): Check if an address is within the vmalloc boundaries
Checking if an address is a vmalloc address is done in a couple of places.
Define a common version in mm.h and replace the other checks.

Again the include structures suck.  The definition of VMALLOC_START and
VMALLOC_END is not available in vmalloc.h since highmem.c cannot be included
there.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05 09:44:14 -08:00
Roland Dreier 7b9b09436b cxgb3: Remove incorrect __devinit annotations
When PCI error recovery was added to cxgb3, a function t3_io_slot_reset()
was added.  This function can call back into t3_prep_adapter() at any
time, so t3_prep_adapter() can no longer be marked __devinit.
This patch removes the __devinit annotation from t3_prep_adapter() and
all the functions that it calls, which fixes

    WARNING: drivers/net/cxgb3/built-in.o(.text+0x2427): Section mismatch in reference from the function t3_io_slot_reset() to the function .devinit.text:t3_prep_adapter()

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-03 04:28:35 -08:00
Al Viro 05e5c11653 annotate cxgb3
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:10:30 -08:00
Patrick McHardy 9dfebcc647 [VLAN]: Turn VLAN_DEV_INFO into inline function
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28 15:08:32 -08:00
Divy Le Ray bc4b6b5269 cxgb3 - Fix EEH, missing softirq blocking
set_pci_drvdata() stores a pointer to the adapter,
not the net device.
Add missing softirq blocking in t3_mgmt_tx.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:07:22 -08:00
Divy Le Ray b881955b7d cxgb3 - parity initialization for T3C adapters.
Add parity initialization for T3C adapters.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:07:22 -08:00
Jeff Garzik 2eab17ab88 drivers/net/cxgb3: trim trailing whitespace
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-01-28 15:04:13 -08:00
Divy Le Ray afefce66a5 cxgb3 - Fix I/O synchronization
Synchronize memory access before ringing
the Tx door bell.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:04:12 -08:00
Divy Le Ray a2604be548 cxgb3 - HW set up updates
Disable PEX errors. The HW generates false positives.
Update RSS hash function to a symmetric algorithm.
Update T3C HW support

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:04:11 -08:00
Divy Le Ray 3e5192eec8 cxgb3 - sysfs methods clean up
Remove unused argument in sysfs methods

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:04:10 -08:00
Divy Le Ray 23561c9447 cxgb3 - fix interaction with pktgen
Do not use skb->cb to stash unmap info,
save the info to the descriptor state.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:04:09 -08:00
Divy Le Ray 273fa9042c cxgb3 - FW upgrade
Bump up FW version to 5.0.
Do not downgrade FW within the same major version range.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:04:09 -08:00
Divy Le Ray 91a6b50cf6 cxgb3 - Add EEH support
Add PCI recovery support

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:04:08 -08:00
Divy Le Ray 67d92ab765 cxgb3 - Fix resources release.
Remove sysfs entries before unregistering the net devices.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:04:07 -08:00
Divy Le Ray 678771d6f5 cxgb3 - Use wild card for PCI subdevice ID match
Subdevice ID is not necessarily set to 1.
Use wild card for PCI device matching

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:04:07 -08:00
Divy Le Ray 42256f57d8 cxgb3 - fix MSI-X failure path
Return error code when msi-x settings fail.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:04:06 -08:00
Joe Perches f07b2e403b drivers/net/cxgb3: Add missing "space"
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28 15:03:55 -08:00
Divy Le Ray 75758e8aa4 cxgb3 - T3C support update
Update GPIO mapping for T3C.
Update xgmac for T3C support.
Fix typo in mtu table.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-12-07 15:00:36 -05:00
Jeff Garzik 7c2399756a [SPARC, XEN, NET/CXGB3] use irq_handler_t where appropriate
Rather than hand-rolling our own prototype, make the code more
future-proof by using the standard irq_handler_t typedef.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-10-23 19:53:17 -04:00
Jiri Slaby 1977f03272 remove asm/bitops.h includes
remove asm/bitops.h includes

including asm/bitops directly may cause compile errors. don't include it
and include linux/bitops instead. next patch will deny including asm header
directly.

Cc: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-19 11:53:41 -07:00
Stephen Hemminger 9265fabf0d cxgb3 sparse warning fixes
Fix warnings from sparse related to shadowed variables and routines
that should be declared static.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:55:29 -07:00
Adrian Bunk 0da18e3883 drivers/net/cxgb3/xgmac.c: remove dead code
This patch removes dead code ("tx_xcnt" can never be != 0 at this place)
spotted by the Coverity checker.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:53:51 -07:00
Al Viro fb8e4444cc cxgb3: trivial endianness annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:52:06 -07:00
Jeff Garzik b9f2c0440d [netdrvr] Stop using legacy hooks ->self_test_count, ->get_stats_count
These have been superceded by the new ->get_sset_count() hook.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:45 -07:00
Jeff Garzik 88d3aafdae [ETHTOOL] Provide default behaviors for a few ethtool sub-ioctls
For the operations
	get-tx-csum
	get-sg
	get-tso
	get-ufo
the default ethtool_op_xxx behavior is fine for all drivers, so we
permit op==NULL to imply the default behavior.

This provides a more uniform behavior across all drivers, eliminating
ethtool(8) "ioctl not supported" errors on older drivers that had
not been updated for the latest sub-ioctls.

The ethtool_op_xxx() functions are left exported, in case anyone
wishes to call them directly from a driver-private implementation --
a not-uncommon case.  Should an ethtool_op_xxx() helper remain unused
for a while, except by net/core/ethtool.c, we can un-export it at a
later date.

[ Resolved conflicts with set/get value ethtool patch... -DaveM ]

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:17 -07:00
Ralf Baechle 10d024c1b2 [NET]: Nuke SET_MODULE_OWNER macro.
It's been a useless no-op for long enough in 2.6 so I figured it's time to
remove it.  The number of people that could object because they're
maintaining unified 2.4 and 2.6 drivers is probably rather small.

[ Handled drivers added by netdev tree and some missed IRDA cases... -DaveM ]

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:13 -07:00
Divy Le Ray dc67369573 cxgb3 - Update engine microcode version
The new microcode engine version is set to 1.1.0

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:51:06 -07:00
Divy Le Ray 1aafee2657 cxgb3 - Add T3C rev
add driver recognition for T3C rev board.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:51:06 -07:00
Divy Le Ray bb9366af7b cxgb3 - CQ context operations time out too soon.
Currently, the driver only tries up to 5 times (5us) to get the results
of a CQ context operation.  Testing has shown the chip can take as much
as 50us to return the response on SG_CONTEXT_CMD operations.  So we up
the retry count to 100 to cover high loads.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:51:05 -07:00
Divy Le Ray 1c17ae8af9 cxgb3 - Set the CQ_ERR bit in CQ contexts.
The cxgb3 driver is incorrectly configuring the HW CQ context for CQ's
that use overflow-avoidance.  Namely the RDMA control CQ.  This results
in a bad DMA from the device to bus address 0.  The solution is to set
the CQ_ERR bit in the context for these types of CQs.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:51:05 -07:00
Divy Le Ray b4687ff753 cxgb3 - remove false positive in xgmac workaround
Qualify toggling of xgmac tx enable with not getting pause frames,
we might not make forward progress because the peer is sending
lots of pause frames.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:51:04 -07:00
Divy Le Ray 3eea3337a0 cxgb3 - log and clear PEX errors
Clear pciE PEX errors late at module load time.
Log details when PEX errors occur.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:51:03 -07:00
Divy Le Ray a5a3b4601b cxgb3 - Firmware update
Update firmware version.
Allow the driver to be up and running with older FW image

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:51:03 -07:00
Divy Le Ray 3f61e4278c cxgb3 - Update internal memory management
Set PM1 internal memory to round robin mode
It balances access to this internal memory for multiport adapters.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:50:51 -07:00
Divy Le Ray 167cdf5fbc cxgb3 - log adapter serial number
Log HW serial number when cxgb3 module is loaded.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:50:50 -07:00
Divy Le Ray c64c2eaeaa cxgb3 - Fatal error update
Stop the MAC when a fatal error is detected.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:50:50 -07:00
Divy Le Ray c9a6ce500d cxgb3 - tighten checks on TID values
Enforce validity checks on connection ids

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:50:49 -07:00
Divy Le Ray e22bb45d77 cxgb3 - Expose HW memory page info
A HW issue requires limiting the receive window size
to 23 pages of internal memory.
These pages can be configured to different sizes,
thus the RDMA driver needs to know the
page size to enforce the upper limit.

Also assign explicit enum values.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:50:49 -07:00
Divy Le Ray 27186dc325 cxgb3 - use immediate data for offload Tx
Send small TX_DATA work requests as immediate data even when
there are fragments. this avoids doing multiple DMAs for
small fragmented packets.
The driver already implements this optimization for small
contiguous packets.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:50:48 -07:00
Divy Le Ray 6e3f03b72c cxgb3 - SGE doorbell overflow warning
Log doorbell Fifo overflow

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:50:47 -07:00
Divy Le Ray 52b810d305 cxgb3 - Update rx coalescing length
Reduce Rx coalescing length to 12288
Large bursts from the adapter to the host create back pressure
on the chip. Reducing the burst size avoids the issue.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:50:47 -07:00
Divy Le Ray b1c9e0f780 cxgb3 - MAC workaround update
Update the MAC workaround to deal with switches that do not
honor pause frames.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:50:28 -07:00
Denis Cheng c54f5c2402 drivers/net/cxgb3: removed several unneeded zero initilization
Cc: linux-bugs@chelsio.com
Signed-off-by: Denis Cheng <crquan@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:50:20 -07:00
Stephen Hemminger bea3348eef [NET]: Make NAPI polling independent of struct net_device objects.
Several devices have multiple independant RX queues per net
device, and some have a single interrupt doorbell for several
queues.

In either case, it's easier to support layouts like that if the
structure representing the poll is independant from the net
device itself.

The signature of the ->poll() call back goes from:

	int foo_poll(struct net_device *dev, int *budget)

to

	int foo_poll(struct napi_struct *napi, int budget)

The caller is returned the number of RX packets processed (or
the number of "NAPI credits" consumed if you want to get
abstract).  The callee no longer messes around bumping
dev->quota, *budget, etc. because that is all handled in the
caller upon return.

The napi_struct is to be embedded in the device driver private data
structures.

Furthermore, it is the driver's responsibility to disable all NAPI
instances in it's ->stop() device close handler.  Since the
napi_struct is privatized into the driver's private data structures,
only the driver knows how to get at all of the napi_struct instances
it may have per-device.

With lots of help and suggestions from Rusty Russell, Roland Dreier,
Michael Chan, Jeff Garzik, and Jamal Hadi Salim.

Bug fixes from Thomas Graf, Roland Dreier, Peter Zijlstra,
Joseph Fannin, Scott Wood, Hans J. Koch, and Michael Chan.

[ Ported to current tree and all drivers converted.  Integrated
  Stephen's follow-on kerneldoc additions, and restored poll_list
  handling to the old style to fix mutual exclusion issues.  -DaveM ]

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:47:45 -07:00
Divy Le Ray 4733007765 - cxgb3 engine microcode load
Load the engine microcode when an interface
is brought up, instead of of doing it when the module
is loaded.
Loosen up tight binding between the driver and the
engine microcode version.
There is no need for microcode update with T3A boards.
Fix the file naming.
Do a better job at logging the loading activity.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31 07:29:08 -04:00
Divy Le Ray 5fbf816fe7 cxgb3 - Fix dev->priv usage
cxgb3 used netdev_priv() and dev->priv for different purposes.
In 2.6.23, netdev_priv() == dev->priv, cxgb3 needs a fix.
This patch is a partial backport of Dave Miller's changes in the
net-2.6.24 git branch.

Without this fix, cxgb3 crashes on 2.6.23.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-08-31 07:29:08 -04:00
Matthew Wilcox 313674afa8 [NET]: ethtool_perm_addr only has one implementation
All drivers implement ethtool get_perm_addr the same way -- by calling
the generic function.  So we can inline the generic function into the
caller and avoid going through the drivers.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-31 14:00:29 -07:00
Al Viro 1f41bb3a5a cxgb3 gfp_t annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-26 11:11:57 -07:00
Linus Torvalds 0cdf6990e9 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (76 commits)
  IB: Update MAINTAINERS with Hal's new email address
  IB/mlx4: Implement query SRQ
  IB/mlx4: Implement query QP
  IB/cm: Send no match if a SIDR REQ does not match a listen
  IB/cm: Fix handling of duplicate SIDR REQs
  IB/cm: cm_msgs.h should include ib_cm.h
  IB/cm: Include HCA ACK delay in local ACK timeout
  IB/cm: Use spin_lock_irq() instead of spin_lock_irqsave() when possible
  IB/sa: Make sure SA queries use default P_Key
  IPoIB: Recycle loopback skbs instead of freeing and reallocating
  IB/mthca: Replace memset(<addr>, 0, PAGE_SIZE) with clear_page(<addr>)
  IPoIB/cm: Fix warning if IPV6 is not enabled
  IB/core: Take sizeof the correct pointer when calling kmalloc()
  IB/ehca: Improve latency by unlocking after triggering the hardware
  IB/ehca: Notify consumers of LID/PKEY/SM changes after nondisruptive events
  IB/ehca: Return QP pointer in poll_cq()
  IB/ehca: Change idr spinlocks into rwlocks
  IB/ehca: Refactor sync between completions and destroy_cq using atomic_t
  IB/ehca: Lock renaming, static initializers
  IB/ehca: Report RDMA atomic attributes in query_qp()
  ...
2007-07-12 16:45:40 -07:00
vignesh babu d9da466a3c use is_power_of_2() in cxgb3/cxgb3_main.c
Replace (n & (n-1)) with is_power_of_2()

Signed-off-by: vignesh babu <vignesh.babu@wipro.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-10 12:22:30 -04:00
Steve Wise de3d353072 RDMA/cxgb3: Streaming -> RDMA mode transition fixes
Due to a HW issue, our current scheme to transition the connection from
streaming to rdma mode is broken on the passive side.  The firmware
and driver now support a new transition scheme for the passive side:

 - driver posts rdma_init_wr (now including the initial receive seqno)
 - driver posts last streaming message via TX_DATA message (MPA start
   response)
 - uP atomically sends the last streaming message and transitions the
   tcb to rdma mode.
 - driver waits for wr_ack indicating the last streaming message was ACKed.

NOTE: This change also bumps the required firmware version to 4.3.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-09 20:12:26 -07:00
Divy Le Ray 480fe1a31c cxgb3 - TP SRAM update
The chip executes microcode present in internal RAM,
whose content is loaded from EEPROM on power cycle.
This patch allows an update of the microcode through PIO
without forcing a power cycle.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-08 22:16:39 -04:00
Divy Le Ray 8a9fab22cf cxgb3 - Firmware update
Update FW to 4.1.
Proceed to subsequent HW tuning to improve RDMA perfs..

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-08 22:16:39 -04:00
Divy Le Ray cf992af561 cxgb3 - sge page management
Streamline sge page management.
Fix dma mappings when buffers are recycled.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-08 22:16:39 -04:00
Divy Le Ray 549f800983 cxgb3 - fix register to stop bc/mc traffic
Use the right register to stop broadcast/multicast traffic.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-06-27 02:33:06 -04:00
Divy Le Ray 2090dee420 cxgb3 - MAC watchdog update
Fix variables initialization and usage in the MAC watchdog.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-06-20 19:16:59 -04:00
Divy Le Ray 7b581a0fa8 cxgb3 - Stop mac RX when changing MTU
Rx traffic needs to be halted when the MTU is changed
to avoid a potential chip hang.
Reset/restore MAC filters around a MTU change.
Also fix the pause frames high materwark setting.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-06-20 19:16:59 -04:00
Divy Le Ray c706bfb52a cxgb3 - Fix direct XAUI support
Check all lanes for link status on direct XAUI cards.
Don't assume that direct XAUI always uses XGMAC 1.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-06-20 19:16:58 -04:00
Divy Le Ray 890de33283 cxgb3 - fix netpoll hanlder
Fix netpoll handler to work with line interrupt, msi and msi-x.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-06-20 19:16:58 -04:00
Divy Le Ray e360b5628f cxgb3 - fix skb->dev dereference
eth_type_trans() now sets skb->dev.
References to skb->dev should happen after it is called.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-06-20 19:16:58 -04:00
Stephen Hemminger 25805dcf9d network drivers: eliminate unneeded kill_vid code
Many drivers had code that did kill_vid, but they weren't doing vlan
filtering. With new API the stub is unneeded unless device sets
NETIF_F_HW_VLAN_FILTER.

Bad habit: I couldn't resist fixing a couple of nearby style things
in acenic, and forcedeth.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-06-03 11:44:20 -04:00
Steve Wise aff9e39d97 RDMA/cxgb3: Support for new abort logic
The HW now posts 2 ABORT_RPL and/or PEER_ABORT_REQ messages.  We need
to handle them by silenty dropping the 1st but mark that we're ready
for the final message.  This plugs some close races between the uP and
HW.  Also update the minimum required firmware version.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-05-06 21:18:08 -07:00
Arnaldo Carvalho de Melo 27d7ff46a3 [SK_BUFF]: Introduce skb_copy_to_linear_data{_offset}
To clearly state the intent of copying to linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
2007-04-25 22:28:29 -07:00
Arnaldo Carvalho de Melo d626f62b11 [SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}
To clearly state the intent of copying from linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2007-04-25 22:28:23 -07:00
Arnaldo Carvalho de Melo 27a884dc3c [SK_BUFF]: Convert skb->tail to sk_buff_data_t
So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes
on 64bit architectures, allowing us to combine the 4 bytes hole left by the
layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4
64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN...
:-)

Many calculations that previously required that skb->{transport,network,
mac}_header be first converted to a pointer now can be done directly, being
meaningful as offsets or pointers.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:26:28 -07:00
Arnaldo Carvalho de Melo 9c70220b73 [SK_BUFF]: Introduce skb_transport_header(skb)
For the places where we need a pointer to the transport header, it is
still legal to touch skb->h.raw directly if just adding to,
subtracting from or setting it to another layer header.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:31 -07:00
Arnaldo Carvalho de Melo aa8223c7bb [SK_BUFF]: Introduce tcp_hdr(), remove skb->h.th
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:26 -07:00
Arnaldo Carvalho de Melo ea2ae17d64 [SK_BUFF]: Introduce skb_transport_offset()
For the quite common 'skb->h.raw - skb->data' sequence.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:16 -07:00
Arnaldo Carvalho de Melo badff6d01a [SK_BUFF]: Introduce skb_reset_transport_header(skb)
For the common, open coded 'skb->h.raw = skb->data' operation, so that we can
later turn skb->h.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.

This one touches just the most simple cases:

skb->h.raw = skb->data;
skb->h.raw = {skb_push|[__]skb_pull}()

The next ones will handle the slightly more "complex" cases.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:15 -07:00
Arnaldo Carvalho de Melo eddc9ec53b [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:10 -07:00
Arnaldo Carvalho de Melo bbe735e424 [SK_BUFF]: Introduce skb_network_offset()
For the quite common 'skb->nh.raw - skb->data' sequence.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:58 -07:00
Arnaldo Carvalho de Melo c1d2bbe1cd [SK_BUFF]: Introduce skb_reset_network_header(skb)
For the common, open coded 'skb->nh.raw = skb->data' operation, so that we can
later turn skb->nh.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.

This one touches just the most simple case, next will handle the slightly more
"complex" cases.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:46 -07:00
Arnaldo Carvalho de Melo 459a98ed88 [SK_BUFF]: Introduce skb_reset_mac_header(skb)
For the common, open coded 'skb->mac.raw = skb->data' operation, so that we can
later turn skb->mac.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.

This one touches just the most simple case, next will handle the slightly more
"complex" cases.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:32 -07:00
Arnaldo Carvalho de Melo 4c13eb6657 [ETH]: Make eth_type_trans set skb->dev like the other *_type_trans
One less thing for drivers writers to worry about.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:30 -07:00
Divy Le Ray 1ca03cbc20 cxgb3 - PHY interrupts and GPIO pins.
Remove assumption that PHY interrupts use GPIOs 3 and 5.
Deal with PHY interrupts connected to any GPIO pins.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-19 15:01:16 -04:00
Divy Le Ray 606fcd0b94 cxgb3 - Fix low memory conditions
Reuse the incoming skb when a clientless abort req is recieved.

The release of RDMA connections HW resources might be deferred in
low memory situations.
Ensure that no further activity is passed up to the RDMA driver
for these connections.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-19 15:01:16 -04:00
Divy Le Ray 6cdbd77e88 cxgb3 - missing CPL hanler and register setting.
Remove specific CPL handler.
Add missing CPL handler.
Add missing register setting when the interface is brought up.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-11 11:54:43 -04:00
Divy Le Ray 59cf81076a cxgb3 - MAC watchdog update
The MAC watchdog was failing if the peer interface was brought down.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-11 11:54:43 -04:00
Divy Le Ray f2d961c982 cxgb3 - avoid deadlock with mac watchdog
Fix a deadlock when the interface s configured down and
the watchdog tack is sleeping on rtnl_lock.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-11 11:54:43 -04:00
Divy Le Ray 7f672cf5b2 cxgb3 - Firwmare update
Introduce FW micro version.
Bump up FW version to 3.3.0

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-03 22:31:09 -04:00
Divy Le Ray 6d6dabac38 cxgb3 - Tighten xgmac workaround
Run the watchdog task when the link is up.
Flush the XGMAC Tx FIFO when the link drops.

Also remove a statistics update that should have gone
in the previous modification of xgmac.c.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-03 22:31:09 -04:00
Divy Le Ray 8ac3ba68e2 cxgb3 - detect NIC only adapters
Differentiate NIC only adapters from RNICs.
Initialize offload capabilities for RNICs only.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-03 22:31:09 -04:00
Divy Le Ray 9f238486f5 cxgb3 - Safeguard TCAM size usage
Ensure that the TCAM active region size is at least 16.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-03 22:31:09 -04:00
Divy Le Ray e4d08359ff cxgb3 - T3B2 pcie config space
T3B2 does not lose its pcie config space on reset.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-23 01:48:34 -04:00
Divy Le Ray fc90664e34 cxgb3 - Fix potential MAC hang
Under rare conditions, the MAC might hang while generating a pause frame.
This patch fine tunes the MAC settings to avoid the issue, allows for
periodic MAC state check, and triggers a recovery if hung.

Also fix one MAC statistics counter for the rev board T3B2.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-23 01:48:34 -04:00
Divy Le Ray 2e2839627a cxgb3 - Auto-load FW if mismatch detected
The driver attempts to upgrade the FW if the card has the wrong version.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-23 01:48:33 -04:00
Divy Le Ray 05b97b30b0 cxgb3 - fix ethtool cmd on multiple queues port
Limit ethtool -g/-G to the given port's queues.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-23 01:48:33 -04:00
Dan Aloni 5c15bdec5c [VLAN]: Avoid a 4-order allocation.
This patch splits the vlan_group struct into a multi-allocated struct. On
x86_64, the size of the original struct is a little more than 32KB, causing
a 4-order allocation, which is prune to problems caused by buddy-system
external fragmentation conditions.

I couldn't just use vmalloc() because vfree() cannot be called in the
softirq context of the RCU callback.

Signed-off-by: Dan Aloni <da-x@monatomic.org>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-02 20:44:51 -08:00
Divy Le Ray d518725fa6 cxgb3 - Tag driver version
This patch adds a "-ko" tag to the driver version.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 19:55:07 -05:00
Divy Le Ray e0994eb1d9 cxgb3 - Feed Rx free list with pages
Populate Rx free list with pages.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-27 04:27:12 -05:00
Divy Le Ray bae73f4447 cxgb3 - Recovery from HW starvation of response queue entries.
Improve the traffic recovery after the HW ran out of response queue entries.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-27 04:27:12 -05:00
Divy Le Ray 99d7cf30b9 cxgb3 - Unmap offload packets when they are freed
Offload packets may be DMAed long after their SGE Tx descriptors are done
so they must remain mapped until they are freed rather than until their
descriptors are freed.  Unmap such packets through an skb destructor.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-27 04:27:12 -05:00