Commit graph

189 commits

Author SHA1 Message Date
Divy Le Ray
3bcb1255ba cxgb3: update driver version
update driver version to 1.1.1-ko

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 11:30:49 -07:00
Divy Le Ray
d9507a532a cxgb3: update FW
Update FW to 7.1

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 11:30:48 -07:00
Divy Le Ray
bf792094ef cxgb3: detect mac link faults.
The driver currently ignores the local or remote link faults
raised at the mac layer. This patch fixes it.
Our mac however only advertizes link events, so wait for the
phy to stabilize the link, then enable mac link events interrupts.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 11:30:47 -07:00
Divy Le Ray
cd40658a61 cxgb3: Update Rev3 mac workaround
Update the heurstics workaround unlocking a hung mac:
- reduce Tx mac toggling by enabling Tx drain before resetting the mac
- Take Tx (lack of) activity in account only
- Update the monitoring counter range to 64 bits

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 11:30:46 -07:00
Divy Le Ray
fc88219601 cxgb3: disable high freq non-data interrupts
Under RX pressure, The HW might generate a high load of interrupts
to signal mac fifo or free lists overflow.
Disable the interrupts, and poll the relevant status bits
to maintain stats.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 11:30:45 -07:00
Divy Le Ray
42c8ea17e8 cxgb3: separate TX and RX reclaim handlers
Separate TX and RX reclaim handlers
Don't disable interrupts in RX reclaim handler.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 11:30:45 -07:00
Divy Le Ray
b2b964f064 cxgb3: prefetch buffer access in GRO mode
Elmininate a cache miss when accessing the CPL header within
the first aggregated buffer.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 11:30:44 -07:00
Divy Le Ray
8f4358044d cxgb3: fix skb truesize in jumbo mode
Update skb truesize correctly for the 2nd buffer from a Jumbo frame

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 11:30:44 -07:00
Divy Le Ray
9bb2b31e6f cxgb3: release page ref on mapping error
Release page chunk reference in case we fail to map it.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 11:30:43 -07:00
Divy Le Ray
26b3871d2c cxgb3: ring rx door bell less frequently
Ring free lists door bell less frequently,
specifically every quarter of the active FL
size.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-13 11:30:43 -07:00
David S. Miller
e70049b9e7 Merge branch 'master' of /home/davem/src/GIT/linux-2.6/ 2009-02-24 03:50:29 -08:00
Divy Le Ray
ce03aaddd4 cxgb3: Add support for PCI ID 0x35.
Add support for adapters with a PCI id equal to 0x35.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-18 17:47:57 -08:00
Hannes Eder
a243f848ce drivers/net/cxgb3: fix sparse warnings: fix signedness
Fix this sparse warning:
  drivers/net/cxgb3/ael1002.c:1010:60: warning: incorrect type in argument 4 (different signedness)

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Acked-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-17 17:26:10 -08:00
Hannes Eder
97915b5bf6 drivers/net/cxgb3: fix sparse warning: symbol shadows an earlier one
Impact: Move variable declaration as close to usage as possible.

Fix this sparse warning:
  drivers/net/cxgb3/cxgb3_main.c:1586:21: warning: symbol 'cap' shadows an earlier one

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Acked-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-17 17:26:09 -08:00
David S. Miller
7870389478 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-02-04 16:52:41 -08:00
Divy Le Ray
65ab8385b6 cxgb3: Fix lro switch
The LRO switch is always set to 1 in the rx processing loop.
It breaks the accelerated iSCSI receive traffic.
Fix its computation.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-04 16:31:39 -08:00
David S. Miller
0c8dfc830a net: Add skb_record_rx_queue() calls to multiqueue capable drivers.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-27 16:22:32 -08:00
Divy Le Ray
cb0bc20595 cxgb3: Notify fatal errors
Set up a notification mechanism to inform upper layer modules
(iWARP, iSCSI) of a chip reset due to an EEH event or a fatal error.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-26 22:21:59 -08:00
Herbert Xu
7be2df451f cxgb3: Replace LRO with GRO
This patch makes cxgb3 invoke the GRO hooks instead of LRO.  As
GRO has a compatible external interface to LRO this is a very
straightforward replacement.

I've kept the ioctl controls for per-queue LRO switches.  However,
we should not encourage anyone to use these.

Because of that, I've also kept the skb construction code in
cxgb3.  Hopefully we can phase out those per-queue switches
and then kill this too.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-21 14:39:13 -08:00
Divy Le Ray
5cda9364f1 cxgb3: ease msi-x settings conditions
The driver currently drops to line interrupt mode
if it did not get all the msi-x vectors it requested.

Allow msi-x settings when a minimal amount of vectors
is provided.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-21 14:34:03 -08:00
Divy Le Ray
eed087e367 cxgb3: Fix LRO misalignment
The lro manager's frag_align_pad setting was missing,
leading to misaligned access to the skb passed up
to the stack.

Tested-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-19 16:20:16 -08:00
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
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