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path: root/drivers/net/cxgb3
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2008-11-11RDMA/cxgb3: deadlock in iw_cxgb3 can cause hang when configuring interface.Steve Wise
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>
2008-11-11cxgb3 - Limit multiqueue setting to msi-xDivy Le Ray
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>
2008-11-11cxgb3 - eeprom read fixesDivy Le Ray
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>
2008-10-22cxgb3: Fix kernel crash caused by uninitialized l2t_entry.arpqRoland Dreier
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>
2008-10-13cxgb3: extend copyrights to 2008Divy Le Ray
Update copyright banner to 2008. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-13cxgb3: update driver versionDivy Le Ray
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>
2008-10-08cxgb3: Add 1G fiber supportDivy Le Ray
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>
2008-10-08cxgb3: Support for Aeluros 2005 PHYDivy Le Ray
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>
2008-10-08cxgb3: commnonize LASI phy codeDivy Le Ray
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>
2008-10-08cxgb3: More flexible support for PHY interrupts.Divy Le Ray
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>
2008-10-08cxgb3: simplify port type struct and usageDivy Le Ray
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>
2008-10-08cxgb3: allow for PHY reset statusDivy Le Ray
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>
2008-10-08cxgb3: Allocate multiqueues at init timeDivy Le Ray
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>
2008-10-08cxgb3: reset the adapter on fatal errorDivy Le Ray
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[2.6.28,1/1] cxgb3 - fix race in EEHDivy Le Ray
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>
2008-09-24drivers/net: replace __FUNCTION__ with __func__Harvey Harrison
__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>
2008-09-24cxgb3 - remove duplicate tests in lroDivy Le Ray
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>
2008-09-22cxgb3: Use SKB list interfaces instead of home-grown implementation.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-29cxgb3: Allow 64KB firmware images.Steve Wise
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>
2008-07-26dma-mapping: add the device argument to dma_mapping_error()FUJITA Tomonori
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>
2008-07-18Merge branch 'master' of ↵David S. Miller
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
2008-07-14RDMA/cxgb3: Fixes for zero STagSteve Wise
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>
2008-07-14RDMA/cxgb3: Add support for protocol statisticsSteve Wise
- 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>
2008-07-11cxgb3 - Add iscsi supportKaren Xie
Add iSCSI (S3xx) support. Signed-off-by: Karen Xie <kxie@chelsio.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-10cxgb3: treat firmware data as constDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-07-08vlan: move struct vlan_dev_info to private headerPatrick McHardy
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>
2008-06-24cxgb3 - add missing adapter type for RDMADivy Le Ray
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>
2008-05-22cxgb3 - Add LRO supportDivy Le Ray
Add LRO support. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-22cxgb3 - Add page support to jumbo frame Rx queueDivy Le Ray
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>
2008-05-22cxgb3 - Fix dma mapping error pathDivy Le Ray
Take potential dma mapping errors in account. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-05-13cxgb3 - fix EEHDivy Le Ray
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>
2008-05-13cxgb3 - fix port up/down error pathDivy Le Ray
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>
2008-05-06cxgb3: Use CAP_SYS_RAWIO for firmwareAlan Cox
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>
2008-04-29RDMA/cxgb3: Support peer-2-peer connection setupSteve Wise
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>
2008-04-18net: Remove unnecessary inclusions of asm/semaphore.hMatthew Wilcox
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>
2008-04-17cxgb3: Fix __must_check warning with dev_dbg.Dan Noe
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>
2008-03-27Merge branch 'master' of ↵David S. Miller
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
2008-03-26annotate cxgb3 (ab)uses of skb->priority/skb->csumAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-03-25cxgb3: Fix lockdep problems with sge.reg_lockRoland Dreier
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>
2008-03-18Merge branch 'master' of ↵David S. Miller
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
2008-03-17cxgb3: Fix transmit queue stop mechanismDivy Le Ray
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>
2008-03-04[NET] NEIGHBOUR: Remove unpopular neigh_is_connected().YOSHIFUJI Hideaki
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>
2008-02-11cxgb3: Handle ARP completions that mark neighbors stale.Steve Wise
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>
2008-02-11Optimize cxgb3 xmit path (a bit)Krishna Kumar
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>
2008-02-05is_vmalloc_addr(): Check if an address is within the vmalloc boundariesChristoph Lameter
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>
2008-02-03cxgb3: Remove incorrect __devinit annotationsRoland Dreier
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>
2008-01-28annotate cxgb3Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2008-01-28[VLAN]: Turn VLAN_DEV_INFO into inline functionPatrick McHardy
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-01-28cxgb3 - Fix EEH, missing softirq blockingDivy Le Ray
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>
2008-01-28cxgb3 - parity initialization for T3C adapters.Divy Le Ray
Add parity initialization for T3C adapters. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>