Commit Graph

68 Commits

Author SHA1 Message Date
Roland Dreier
47fd23fe8e cxgb3: Keep LRO off if disabled when interface is down
I have a system with a Chelsio adapter (driven by cxgb3) whose ports are
part of a Linux bridge.  Recently I updated the kernel and discovered
that things stopped working because cxgb3 was doing LRO on packets that
were passed into the bridge code for forwarding.  (Incidentally, this
problem manifested itself in a strange way that made debugging a bit
interesting -- for some reason, the skb_warn_if_lro() check in bridge
didn't trigger and these LROed packets were forwarded out a forcedeth
interface, and caused the forcedeth transmit path to get stuck)

This is because cxgb3 has no way of keeping state for the LRO flag until
the interface is brought up, so if the bridging code disables LRO while
the interface is down, then cxgb3_up() will just reenable LRO, and on my
Debian system at least, the init scripts add interfaces to a bridge
before bringing the interfaces up.

Fix this by keeping track of each interface's LRO state in cxgb3 so that
when bridge disables LRO, it stays disabled in cxgb3_up() when the
interface is brought up.  I did this by changing the rx_csum_offload
flag into a pair of bit flags; the effect of this on the rx_eth() fast
path is miniscule enough that it should be fine (eg on x86, a cmpb
instruction becomes a testb instruction).

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11 00:19:36 -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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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