- 24 5月, 2007 1 次提交
-
-
由 Roland Dreier 提交于
If a QP is attached to a shared receive queue (SRQ), then it doesn't have a receive queue (RQ). So don't allocate an RQ doorbell (or map a doorbell from userspace for userspace QPs) for that QP. Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 22 5月, 2007 1 次提交
-
-
由 Alexey Dobriyan 提交于
First thing mm.h does is including sched.h solely for can_do_mlock() inline function which has "current" dereference inside. By dealing with can_do_mlock() mm.h can be detached from sched.h which is good. See below, why. This patch a) removes unconditional inclusion of sched.h from mm.h b) makes can_do_mlock() normal function in mm/mlock.c c) exports can_do_mlock() to not break compilation d) adds sched.h inclusions back to files that were getting it indirectly. e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were getting them indirectly Net result is: a) mm.h users would get less code to open, read, preprocess, parse, ... if they don't need sched.h b) sched.h stops being dependency for significant number of files: on x86_64 allmodconfig touching sched.h results in recompile of 4083 files, after patch it's only 3744 (-8.3%). Cross-compile tested on all arm defconfigs, all mips defconfigs, all powerpc defconfigs, alpha alpha-up arm i386 i386-up i386-defconfig i386-allnoconfig ia64 ia64-up m68k mips parisc parisc-up powerpc powerpc-up s390 s390-up sparc sparc-up sparc64 sparc64-up um-x86_64 x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig as well as my two usual configs. Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 21 5月, 2007 2 次提交
-
-
由 Roland Dreier 提交于
Make mlx4_post_srq_recv() fail if the SRQ is full (head == tail). Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Eli Cohen 提交于
Pass the number of WQEs for the send queue and their size from userspace to the kernel to avoid having to keep the QP size calculations in sync between the kernel driver and libmlx4. This fixes a bug seen with the current mlx4_ib driver and current libmlx4 caused by a difference in the calculated sizes for SQ WQEs. Also, this gives more flexibility for userspace to experiment with using multiple WQE BBs for a single SQ WQE. Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 19 5月, 2007 9 次提交
-
-
由 Roland Dreier 提交于
wr->opcode is invalid if it's >= ARRAY_SIZE(mlx4_ib_opcode), not just strictly >. This was spotted by the Coverity checker (CID 1643). Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Michael S. Tsirkin 提交于
According to the IB spec, a QP can be moved from RESET back to RESET or to the ERROR state, but mlx4 firmware does not support this and returns an error if we try. Fix the RESET to RESET transition by just returning 0 without doing anything, and fix RESET to ERROR by moving the QP from RESET to INIT with dummy parameters and then transitioning from INIT to ERROR. Signed-off-by: NMichael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Michael S. Tsirkin 提交于
According to the IB spec, a QP can be moved from RESET to the ERROR state, but mthca firmware does not support this and returns an error if we try. Work around this FW limitation by moving the QP from RESET to INIT with dummy parameters and then transitioning from INIT to ERROR. Signed-off-by: NMichael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Roland Dreier 提交于
This is the same issue discovered in mthca by Rolf Manderscheid <rvm@obsidianresearch.com>. Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Rolf Manderscheid 提交于
Global CM packets used by rmda_cm were being sent with a GRH:hopLimit of zero, causing them to be dropped by the router. The problem is a missing initialization of the hop_limit field in mthca_read_ah(), which was called by build_mlx_header() when sending a MAD on QP1. Signed-off-by: NRolf Manderscheid <rvm@obsidianresearch.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Eli Cohen 提交于
max_qp_dest_rdma is already in natural units - no need to shift. This was discovered by a test that deliberately requests more outstanding atomic operation than the device supports. Found by Sagi Rotem at Mellanox. Signed-off-by: NEli Cohen <eli@mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Ali Ayoub 提交于
Signed-off-by: NMichael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Hoang-Nam Nguyen 提交于
Set the return code of ehca_register_mr() to ENOMEM if the corresponding firmware call fails due to out of resources. Some other error codes were explicitly mapped to EINVAL -- just remove those cases so they get mapped to the default case, which already returns EINVAL anyway. Signed-off-by: NHoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Roland Dreier 提交于
Lockdep found the following potential deadlock between mcast_lock and n_mcast_grps_lock: mcast_lock is taken from both interrupt context and process context, so spin_lock_irqsave() must be used to take it. n_mcast_grps_lock is only taken from process context, so at first it seems safe to take it with plain spin_lock(); however, it also nests inside mcast_lock, and hence we could deadlock: cpu A cpu B ipath_mcast_add(): spin_lock_irq(&mcast_lock); ipath_mcast_detach(): spin_lock(&n_mcast_grps_lock); <enter interrupt> ipath_mcast_find(): spin_lock_irqsave(&mcast_lock); spin_lock(&n_mcast_grps_lock); Fix this by using spin_lock_irq() to take n_mcast_grps_lock. Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 15 5月, 2007 10 次提交
-
-
由 Michael S. Tsirkin 提交于
mthca_cq_clean() updates the CQ consumer index without moving CQEs back to HW ownership. As a result, the same WRID might get reported twice, resulting in a use-after-free. This was observed in IPoIB CM. Fix by moving all freed CQEs to HW ownership. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=617> Signed-off-by: NMichael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Michael S. Tsirkin 提交于
Fix posting lists of > 255 receive WRs for Tavor: rq.next_ind must be updated each doorbell, otherwise the next doorbell will use an incorrect index. Found by Ronni Zimmermann at Mellanox. Signed-off-by: NMichael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Joachim Fenkes 提交于
- Scaling code is still considered experimental, so disable it by default - Increase version to SVNEHCA_0023 Signed-off-by: NJoachim Fenkes <fenkes@de.ibm.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Joachim Fenkes 提交于
eHCA's sysfs attributes are now being created via sysfs_create_group(), making the process neatly table-driven. The return value is checked, thus fixing a few compiler warnings. Signed-off-by: NJoachim Fenkes <fenkes@de.ibm.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Joachim Fenkes 提交于
- In ehca_process_eq(), we're IRQ safe throughout the whole function, so we don't need another _irqsave in the middle of flight. - take_over_work() is only called by comp_pool_callback(), so it can move into the same #ifdef block. Signed-off-by: NJoachim Fenkes <fenkes@de.ibm.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Hoang-Nam Nguyen 提交于
AQP0/1 should report qp_num={0|1} and the actual QP# should be stored in struct ehca_qp, not the other way round. Signed-off-by: NJoachim Fenkes <fenkes@de.ibm.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Joachim Fenkes 提交于
The driver needs to always supply the "GRH present" flag to the hypervisor, whether it's true or false. Not supplying it (i.e. not setting the corresponding mask bit) amounts to a "perhaps", which we don't want. Signed-off-by: NJoachim Fenkes <fenkes@de.ibm.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Stefan Roscher 提交于
Some pSeries hypervisor versions show a race condition in the allocate MR hCall. Serialize this call per adapter to circumvent this problem. Signed-off-by: NJoachim Fenkes <fenkes@de.ibm.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Arthur Jones 提交于
Once upon a time, GPIO interrupts were rare. But then a chip bug in the waldo series forced the use of a GPIO interrupt to signal packet reception. This greatly increased the frequency of GPIO interrupts which have the gpio_mask bits set on the waldo chips. Other bits in the gpio_status register are used for I2C clock and data lines, these bits are usually on. An "unlikely" annotation leftover from the old days was improperly applied to these bits, and an unnecessary chip mmio read was being accessed in the interrupt fast path on waldo. Remove the stagnant unlikely annotation in the interrupt handler and keep a shadow copy of the gpio_mask register to avoid the slow mmio read when testing for interruptable GPIO bits. Signed-off-by: NArthur Jones <arthur.jones@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Jack Morgenstein 提交于
uar_lock spinlock was used in mlx4_ib_cq_arm without being initialized (this only affects 32-bit archs, because uar_lock is not used on 64-bit archs and MLX4_INIT_DOORBELL_LOCK() is a NOP). Signed-off-by: NJack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 10 5月, 2007 1 次提交
-
-
由 Rafael J. Wysocki 提交于
Since nonboot CPUs are now disabled after tasks and devices have been frozen and the CPU hotplug infrastructure is used for this purpose, we need special CPU hotplug notifications that will help the CPU-hotplug-aware subsystems distinguish normal CPU hotplug events from CPU hotplug events related to a system-wide suspend or resume operation in progress. This patch introduces such notifications and causes them to be used during suspend and resume transitions. It also changes all of the CPU-hotplug-aware subsystems to take these notifications into consideration (for now they are handled in the same way as the corresponding "normal" ones). [oleg@tv-sign.ru: cleanups] Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 09 5月, 2007 3 次提交
-
-
由 Roland Dreier 提交于
Add an InfiniBand driver for Mellanox ConnectX adapters. Because these adapters can also be used as ethernet NICs and Fibre Channel HBAs, the driver is split into two modules: mlx4_core: Handles low-level things like device initialization and processing firmware commands. Also controls resource allocation so that the InfiniBand, ethernet and FC functions can share a device without stepping on each other. mlx4_ib: Handles InfiniBand-specific things; plugs into the InfiniBand midlayer. Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Roland Dreier 提交于
Export ib_umem_get()/ib_umem_release() and put low-level drivers in control of when to call ib_umem_get() to pin and DMA map userspace, rather than always calling it in ib_uverbs_reg_mr() before calling the low-level driver's reg_user_mr method. Also move these functions to be in the ib_core module instead of ib_uverbs, so that driver modules using them do not depend on ib_uverbs. This has a number of advantages: - It is better design from the standpoint of making generic code a library that can be used or overridden by device-specific code as the details of specific devices dictate. - Drivers that do not need to pin userspace memory regions do not need to take the performance hit of calling ib_mem_get(). For example, although I have not tried to implement it in this patch, the ipath driver should be able to avoid pinning memory and just use copy_{to,from}_user() to access userspace memory regions. - Buffers that need special mapping treatment can be identified by the low-level driver. For example, it may be possible to solve some Altix-specific memory ordering issues with mthca CQs in userspace by mapping CQ buffers with extra flags. - Drivers that need to pin and DMA map userspace memory for things other than memory regions can use ib_umem_get() directly, instead of hacks using extra parameters to their reg_phys_mr method. For example, the mlx4 driver that is pending being merged needs to pin and DMA map QP and CQ buffers, but it does not need to create a memory key for these buffers. So the cleanest solution is for mlx4 to call ib_umem_get() in the create_qp and create_cq methods. Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Jeff Layton 提交于
This patch makes it so that simple_fill_super and get_sb_pseudo assign their root inodes to be number 1. It also fixes up a couple of callers of simple_fill_super that were passing in files arrays that had an index at number 1, and adds a warning for any caller that sends in such an array. It would have been nice to have made it so that it wasn't possible to make such a collision, but some callers need to be able to control what inode number their entries get, so I think this is the best that can be done. Signed-off-by: NJeff Layton <jlayton@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 07 5月, 2007 5 次提交
-
-
由 Roland Dreier 提交于
The semantics defined by the InfiniBand specification say that completion events are only generated when a completions is added to a completion queue (CQ) after completion notification is requested. In other words, this means that the following race is possible: while (CQ is not empty) ib_poll_cq(CQ); // new completion is added after while loop is exited ib_req_notify_cq(CQ); // no event is generated for the existing completion To close this race, the IB spec recommends doing another poll of the CQ after requesting notification. However, it is not always possible to arrange code this way (for example, we have found that NAPI for IPoIB cannot poll after requesting notification). Also, some hardware (eg Mellanox HCAs) actually will generate an event for completions added before the call to ib_req_notify_cq() -- which is allowed by the spec, since there's no way for any upper-layer consumer to know exactly when a completion was really added -- so the extra poll of the CQ is just a waste. Motivated by this, we add a new flag "IB_CQ_REPORT_MISSED_EVENTS" for ib_req_notify_cq() so that it can return a hint about whether the a completion may have been added before the request for notification. The return value of ib_req_notify_cq() is extended so: < 0 means an error occurred while requesting notification == 0 means notification was requested successfully, and if IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events were missed and it is safe to wait for another event. > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed in. It means that the consumer must poll the CQ again to make sure it is empty to avoid the race described above. We add a flag to enable this behavior rather than turning it on unconditionally, because checking for missed events may incur significant overhead for some low-level drivers, and consumers that don't care about the results of this test shouldn't be forced to pay for the test. Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Michael S. Tsirkin 提交于
Add a num_comp_vectors member to struct ib_device and extend ib_create_cq() to pass in a comp_vector parameter -- this parallels the userspace libibverbs API. Update all hardware drivers to set num_comp_vectors to 1 and have all ULPs pass 0 for the comp_vector value. Pass the value of num_comp_vectors to userspace rather than hard-coding a value of 1. We want multiple CQ event vector support (via MSI-X or similar for adapters that can generate multiple interrupts), but it's not clear how many vectors we want, or how we want to deal with policy issues such as how to decide which vector to use or how to set up interrupt affinity. This patch is useful for experimenting, since no core changes will be necessary when updating a driver to support multiple vectors, and we know that we want to make at least these changes anyway. Signed-off-by: NMichael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Ralph Campbell 提交于
Fix a problem where simple ACKs can be sent ahead of RDMA read responses thus implicitly NAKing the RDMA read. Signed-off-by: NRalph Campbell <ralph.cambpell@qlogic.com> Signed-off-by: NRobert Walsh <robert.walsh@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Ralph Campbell 提交于
Fix a missing unlock in ipath_rc_rcv_resp() and remove an extra unlock from ipath_rc_rcv_error(). Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Steve Wise 提交于
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: NSteve Wise <swise@opengridcomputing.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
- 03 5月, 2007 1 次提交
-
-
由 Jean Delvare 提交于
I noticed that many source files include <linux/pci.h> while they do not appear to need it. Here is an attempt to clean it all up. In order to find all possibly affected files, I searched for all files including <linux/pci.h> but without any other occurence of "pci" or "PCI". I removed the include statement from all of these, then I compiled an allmodconfig kernel on both i386 and x86_64 and fixed the false positives manually. My tests covered 66% of the affected files, so there could be false positives remaining. Untested files are: arch/alpha/kernel/err_common.c arch/alpha/kernel/err_ev6.c arch/alpha/kernel/err_ev7.c arch/ia64/sn/kernel/huberror.c arch/ia64/sn/kernel/xpnet.c arch/m68knommu/kernel/dma.c arch/mips/lib/iomap.c arch/powerpc/platforms/pseries/ras.c arch/ppc/8260_io/enet.c arch/ppc/8260_io/fcc_enet.c arch/ppc/8xx_io/enet.c arch/ppc/syslib/ppc4xx_sgdma.c arch/sh64/mach-cayman/iomap.c arch/xtensa/kernel/xtensa_ksyms.c arch/xtensa/platform-iss/setup.c drivers/i2c/busses/i2c-at91.c drivers/i2c/busses/i2c-mpc.c drivers/media/video/saa711x.c drivers/misc/hdpuftrs/hdpu_cpustate.c drivers/misc/hdpuftrs/hdpu_nexus.c drivers/net/au1000_eth.c drivers/net/fec_8xx/fec_main.c drivers/net/fec_8xx/fec_mii.c drivers/net/fs_enet/fs_enet-main.c drivers/net/fs_enet/mac-fcc.c drivers/net/fs_enet/mac-fec.c drivers/net/fs_enet/mac-scc.c drivers/net/fs_enet/mii-bitbang.c drivers/net/fs_enet/mii-fec.c drivers/net/ibm_emac/ibm_emac_core.c drivers/net/lasi_82596.c drivers/parisc/hppb.c drivers/sbus/sbus.c drivers/video/g364fb.c drivers/video/platinumfb.c drivers/video/stifb.c drivers/video/valkyriefb.c include/asm-arm/arch-ixp4xx/dma.h sound/oss/au1550_ac97.c I would welcome test reports for these files. I am fine with removing the untested files from the patch if the general opinion is that these changes aren't safe. The tested part would still be nice to have. Note that this patch depends on another header fixup patch I submitted to LKML yesterday: [PATCH] scatterlist.h needs types.h http://lkml.org/lkml/2007/3/01/141Signed-off-by: NJean Delvare <khali@linux-fr.org> Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
-
- 02 5月, 2007 1 次提交
-
-
由 Stephen Rothwell 提交于
These are all the remaining instances of get_property. Simple rename of get_property to of_get_property. Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NPaul Mackerras <paulus@samba.org>
-
- 01 5月, 2007 6 次提交
-
-
由 Steve Wise 提交于
Signed-off-by: NSteve Wise <swise@opengridcomputing.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Steve Wise 提交于
Signed-off-by: NSteve Wise <swise@opengridcomputing.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Steve Wise 提交于
Fix TERMINATE layer, type, and ecode values based on conformance testing. Signed-off-by: NSteve Wise <swise@opengridcomputing.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Robert Walsh 提交于
Fix the pending mmap code so it doesn't corrupt the list of pending mmaps and crash the machine when pending mmaps are destroyed without first being mapped. Also, remove an unused variable, and use standard kernel lists instead of our own homebrewed linked list implementation to keep the pending mmap list. Signed-off-by: NRobert Walsh <robert.walsh@qlogic.com> Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Michael S. Tsirkin 提交于
With mthca, RC QPs can starve each other and even UD QPs on the same hardware schedule queue. As a result, userspace MPI can starve e.g. IPoIB traffic, with netdev watchdog warnings getting printed out, and TCP connections getting stuck or failing. Reduce the chance of this happening by using three separate hardware schedule queues: one for userspace RC QPs, one for kernel RC QPs, and one for all other QPs. Signed-off-by: NMichael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 Ralph Campbell 提交于
This fixes a problem which causes too many RC timeouts and retransmits. Signed-off-by: NRalph Campbell <ralph.campbell@qlogic.com> Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-