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2011-01-10IB/srp: reduce local coverage for command submission and EHBart Van Assche
We only need locks to protect our lists and number of credits available. By pre-consuming the credit for the request, we can reduce our lock coverage to just those areas. If we don't actually send the request, we'll need to put the credit back into the pool. Signed-off-by: Bart Van Assche <bvanassche@acm.org> [ broken out and small cleanups by David Dillow ] Signed-off-by: David Dillow <dillowda@ornl.gov>
2011-01-10IB/srp: don't move active requests to their own listBart Van Assche
We use req->scmnd != NULL to indicate an active request, so there's no need to keep a separate list for them. We can afford the array iteration during error handling, and dropping it gives us one less item that needs lock protection. Signed-off-by: Bart Van Assche <bvanassche@acm.org> [ broken out and small cleanups by David Dillow ] Signed-off-by: David Dillow <dillowda@ornl.gov>
2011-01-07Merge branch 'vfs-scale-working' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin * 'vfs-scale-working' of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin: (57 commits) fs: scale mntget/mntput fs: rename vfsmount counter helpers fs: implement faster dentry memcmp fs: prefetch inode data in dcache lookup fs: improve scalability of pseudo filesystems fs: dcache per-inode inode alias locking fs: dcache per-bucket dcache hash locking bit_spinlock: add required includes kernel: add bl_list xfs: provide simple rcu-walk ACL implementation btrfs: provide simple rcu-walk ACL implementation ext2,3,4: provide simple rcu-walk ACL implementation fs: provide simple rcu-walk generic_check_acl implementation fs: provide rcu-walk aware permission i_ops fs: rcu-walk aware d_revalidate method fs: cache optimise dentry and inode for rcu-walk fs: dcache reduce branches in lookup path fs: dcache remove d_mounted fs: fs_struct use seqlock fs: rcu-walk for path lookup ...
2011-01-07fs: dcache rationalise dget variantsNick Piggin
dget_locked was a shortcut to avoid the lazy lru manipulation when we already held dcache_lock (lru manipulation was relatively cheap at that point). However, how that the lru lock is an innermost one, we never hold it at any caller, so the lock cost can now be avoided. We already have well working lazy dcache LRU, so it should be fine to defer LRU manipulations to scan time. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-07fs: dcache remove dcache_lockNick Piggin
dcache_lock no longer protects anything. remove it. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-07fs: dcache scale dentry refcountNick Piggin
Make d_count non-atomic and protect it with d_lock. This allows us to ensure a 0 refcount dentry remains 0 without dcache_lock. It is also fairly natural when we start protecting many other dentry members with d_lock. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
2011-01-05IB/srp: allow lockless work postingBart Van Assche
Only one CPU at a time will own an RX IU, so using the address of the IU as the work request cookie allows us to avoid taking a lock. We can similarly prepare the TX path for lockless posting by moving the free TX IUs to a list. This also removes the requirement that the queue sizes be a power of 2. Signed-off-by: Bart Van Assche <bvanassche@acm.org> [ broken out, small cleanups, and modified to avoid needing an extra field in the IU by David Dillow] Signed-off-by: David Dillow <dillowda@ornl.gov>
2011-01-05IB/srp: consolidate state change codeBart Van Assche
Signed-off-by: Bart Van Assche <bvanassche@acm.org> [ broken out and small cleanups by David Dillow ] Signed-off-by: David Dillow <dillowda@ornl.gov>
2011-01-05IB/srp: allow task management without a previous requestDavid Dillow
We can only have one task management comment outstanding, so move the completion and status to the target port. This allows us to handle resets of a LUN without a corresponding request having been sent. Meanwhile, we don't need to play games with host_scribble, just use it as the pointer it is. This fixes a crash when we issue a bus reset using sg_reset. Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=13893 Reported-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: David Dillow <dillowda@ornl.gov>
2010-12-26Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: net/ipv4/fib_frontend.c
2010-12-22Merge branch 'master' into for-nextJiri Kosina
Conflicts: MAINTAINERS arch/arm/mach-omap2/pm24xx.c drivers/scsi/bfa/bfa_fcpim.c Needed to update to apply fixes for which the old branch was too outdated.
2010-12-08IB/uverbs: Handle large number of entries in poll CQDan Carpenter
In ib_uverbs_poll_cq() code there is a potential integer overflow if userspace passes in a large cmd.ne. The calls to kmalloc() would allocate smaller buffers than intended, leading to memory corruption. There iss also an information leak if resp wasn't all used. Unprivileged userspace may call this function, although only if an RDMA device that uses this function is present. Fix this by copying CQ entries one at a time, which avoids the allocation entirely, and also by moving this copying into a function that makes sure to initialize all memory copied to userspace. Special thanks to Jason Gunthorpe <jgunthorpe@obsidianresearch.com> for his help and advice. Cc: <stable@kernel.org> Signed-off-by: Dan Carpenter <error27@gmail.com> [ Monkey around with things a bit to avoid bad code generation by gcc when designated initializers are used. - Roland ] Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-12-02Merge branch 'for-linus' of ↵Linus Torvalds
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: IB: Fix information leak in marshalling code IB/pack: Remove some unused code added by the IBoE patches IB/mlx4: Fix IBoE link state IB/mlx4: Fix IBoE reported link rate mlx4_core: Workaround firmware bug in query dev cap IB/mlx4: Fix memory ordering of VLAN insertion control bits MAINTAINERS: Update NetEffect entry
2010-12-01Merge branches 'misc', 'mlx4' and 'nes' into for-nextRoland Dreier
2010-12-01IB: Fix information leak in marshalling codeVasiliy Kulikov
ib_ucm_init_qp_attr() and ucma_init_qp_attr() pass struct ib_uverbs_qp_attr with reserved, qp_state, {ah_attr,alt_ah_attr}{reserved,->grh.reserved} fields uninitialized to copy_to_user(). This leads to leaking of contents of kernel stack memory to userspace. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-12-01IB/pack: Remove some unused code added by the IBoE patchesOr Gerlitz
Remove unused functions added by commit ff7f5aab354d ("IB/pack: IBoE UD packet packing support"). Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
2010-12-01IB/mlx4: Fix IBoE link stateEli Cohen
Use netif_running() and netif_carrier_ok() to report link state, exactly as is done to report Ethernet link state in sysfs. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-12-01IB/mlx4: Fix IBoE reported link rateEli Cohen
The link rate is the product of the link speed in the link width. For Etherent ports the rate is 10G, so we use 1 for the width and 4 for speed to get the correct rate. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-12-01IB/mlx4: Fix memory ordering of VLAN insertion control bitsEli Cohen
We must fully update the control segment before marking it as valid, so that hardware doesn't start executing it before we're ready. Signed-off-by: Eli Cohen <eli@mellanox.co.il> [ Move VLAN control bit setting to before wmb(). - Roland ] Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-11-24infiniband: remove dev_base_lock useEric Dumazet
dev_base_lock is the legacy way to lock the device list, and is planned to disappear. (writers hold RTNL, readers hold RCU lock) Convert rdma_translate_ip() and update_ipv6_gids() to RCU locking. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-17BKL: remove extraneous #include <smp_lock.h>Arnd Bergmann
The big kernel lock has been removed from all these files at some point, leaving only the #include. Remove this too as a cleanup. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-16SCSI host lock push-downJeff Garzik
Move the mid-layer's ->queuecommand() invocation from being locked with the host lock to being unlocked to facilitate speeding up the critical path for drivers who don't need this lock taken anyway. The patch below presents a simple SCSI host lock push-down as an equivalent transformation. No locking or other behavior should change with this patch. All existing bugs and locking orders are preserved. Additionally, add one parameter to queuecommand, struct Scsi_Host * and remove one parameter from queuecommand, void (*done)(struct scsi_cmnd *) Scsi_Host* is a convenient pointer that most host drivers need anyway, and 'done' is redundant to struct scsi_cmnd->scsi_done. Minimal code disturbance was attempted with this change. Most drivers needed only two one-line modifications for their host lock push-down. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Acked-by: James Bottomley <James.Bottomley@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-15infiniband: Only include mutex.h once in drivers/infiniband/hw/cxgb4/iw_cxgb4.hJesper Juhl
Only include the header linux/mutex.h once inside drivers/infiniband/hw/cxgb4/iw_cxgb4.h Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-11-11net: get rid of rtable->idevEric Dumazet
It seems idev field in struct rtable has no special purpose, but adding extra atomic ops. We hold refcounts on the device itself (using percpu data, so pretty cheap in current kernel). infiniband case is solved using dst.dev instead of idev->dev Removal of this field means routing without route cache is now using shared data, percpu data, and only potential contention is a pair of atomic ops on struct neighbour per forwarded packet. About 5% speedup on routing test. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Hal Rosenstock <hal.rosenstock@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-01tree-wide: fix comment/printk typosUwe Kleine-König
"gadget", "through", "command", "maintain", "maintain", "controller", "address", "between", "initiali[zs]e", "instead", "function", "select", "already", "equal", "access", "management", "hierarchy", "registration", "interest", "relative", "memory", "offset", "already", Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-10-29convert get_sb_single() usersAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-10-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (52 commits) split invalidate_inodes() fs: skip I_FREEING inodes in writeback_sb_inodes fs: fold invalidate_list into invalidate_inodes fs: do not drop inode_lock in dispose_list fs: inode split IO and LRU lists fs: switch bdev inode bdi's correctly fs: fix buffer invalidation in invalidate_list fsnotify: use dget_parent smbfs: use dget_parent exportfs: use dget_parent fs: use RCU read side protection in d_validate fs: clean up dentry lru modification fs: split __shrink_dcache_sb fs: improve DCACHE_REFERENCED usage fs: use percpu counter for nr_dentry and nr_dentry_unused fs: simplify __d_free fs: take dcache_lock inside __d_path fs: do not assign default i_ino in new_inode fs: introduce a per-cpu last_ino allocator new helper: ihold() ...
2010-10-26Merge branch 'for-linus' of ↵Linus Torvalds
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: (63 commits) IB/qib: clean up properly if pci_set_consistent_dma_mask() fails IB/qib: Allow driver to load if PCIe AER fails IB/qib: Fix uninitialized pointer if CONFIG_PCI_MSI not set IB/qib: Fix extra log level in qib_early_err() RDMA/cxgb4: Remove unnecessary KERN_<level> use RDMA/cxgb3: Remove unnecessary KERN_<level> use IB/core: Add link layer type information to sysfs IB/mlx4: Add VLAN support for IBoE IB/core: Add VLAN support for IBoE IB/mlx4: Add support for IBoE mlx4_en: Change multicast promiscuous mode to support IBoE mlx4_core: Update data structures and constants for IBoE mlx4_core: Allow protocol drivers to find corresponding interfaces IB/uverbs: Return link layer type to userspace for query port operation IB/srp: Sync buffer before posting send IB/srp: Use list_first_entry() IB/srp: Reduce number of BUSY conditions IB/srp: Eliminate two forward declarations IB/mlx4: Signal node desc changes to SM by using FW to generate trap 144 IB: Replace EXTRA_CFLAGS with ccflags-y ...
2010-10-26replace nested max/min macros with {max,min}3 macroHagen Paul Pfeifer
Use the new {max,min}3 macros to save some cycles and bytes on the stack. This patch substitutes trivial nested macros with their counterpart. Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net> Cc: Joe Perches <joe@perches.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Hartley Sweeten <hsweeten@visionengravers.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Roland Dreier <rolandd@cisco.com> Cc: Sean Hefty <sean.hefty@intel.com> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-26Merge branches 'amso1100', 'cma', 'cxgb3', 'cxgb4', 'ehca', 'iboe', 'ipoib', ↵Roland Dreier
'misc', 'mlx4', 'nes', 'qib' and 'srp' into for-next
2010-10-26IB/qib: clean up properly if pci_set_consistent_dma_mask() failsJason Gunthorpe
Clean up properly if pci_set_consistent_dma_mask() fails. Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-26IB/qib: Allow driver to load if PCIe AER failsRalph Campbell
Some PCIe root complex chip sets don't support advanced error reporting. Allow the driver to load OK if pci_enable_pcie_error_reporting() fails. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-26IB/qib: Fix uninitialized pointer if CONFIG_PCI_MSI not setRalph Campbell
If CONFIG_PCI_MSI is not set, and a QLE7140 is present, the pointer "dd" is uninitialized. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-26IB/qib: Fix extra log level in qib_early_err()Jason Gunthorpe
Noticed this odd looking thing in dmesg: ib_qib 0000:02:00.0: <3>ib_qib: Unable to enable pcie error reporting: -5 which is due to a bad use of dev_info. Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Acked-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-26RDMA/cxgb4: Remove unnecessary KERN_<level> useJoe Perches
Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-26RDMA/cxgb3: Remove unnecessary KERN_<level> useJoe Perches
Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-25fs: do not assign default i_ino in new_inodeChristoph Hellwig
Instead of always assigning an increasing inode number in new_inode move the call to assign it into those callers that actually need it. For now callers that need it is estimated conservatively, that is the call is added to all filesystems that do not assign an i_ino by themselves. For a few more filesystems we can avoid assigning any inode number given that they aren't user visible, and for others it could be done lazily when an inode number is actually needed, but that's left for later patches. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-10-25IB/core: Add link layer type information to sysfsEli Cohen
Since an IB transport port may use either IB or Ethernet as its link layer, add the file /sys/class/infiniband/<device>/ports/<port_num>/link_layer to show the link layer for the port. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-25IB/mlx4: Add VLAN support for IBoEEli Cohen
This patch allows IBoE traffic to be encapsulated in 802.1Q tagged VLAN frames. The VLAN tag is encoded in the GID and derived from it by a simple computation. The netdev notifier callback is modified to catch VLAN device addition/removal and the port's GID table is updated to reflect the change, so that for each netdevice there is an entry in the GID table. When the port's GID table is exhausted, GID entries will not be added. Only children of the main interfaces can add to the GID table; if a VLAN interface is added on another VLAN interface (e.g. "vconfig add eth2.6 8"), then that interfaces will not add an entry to the GID table. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-25IB/core: Add VLAN support for IBoEEli Cohen
Add 802.1q VLAN support to IBoE. The VLAN tag is encoded within the GID derived from a link local address in the following way: GID[11] GID[12] contain the VLAN ID when the GID contains a VLAN. The 3 bits user priority field of the packets are identical to the 3 bits of the SL. In case of rdma_cm apps, the TOS field is used to generate the SL field by doing a shift right of 5 bits effectively taking to 3 MS bits of the TOS field. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-25IB/mlx4: Add support for IBoEEli Cohen
Add support for IBoE to mlx4_ib. The bulk of the code is handling the new address vector fields; mlx4 needs the MAC address of a remote node to include it in a WQE (for datagrams) or in the QP context (for connected QPs). Address resolution is done by assuming all unicast GIDs are either link-local IPv6 addresses. Multicast group attach/detach needs to update the NIC's multicast filters; but since attaching a QP to a multicast group can be done before the QP is bound to a port, for IBoE we need to keep track of all multicast groups that a QP is attached too before it transitions from INIT to RTR (since it does not have a port in the INIT state). Signed-off-by: Eli Cohen <eli@mellanox.co.il> [ Many things cleaned up and otherwise monkeyed with; hope I didn't introduce too many bugs. - Roland ] Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-25IB/uverbs: Return link layer type to userspace for query port operationEli Cohen
Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24IB/srp: Sync buffer before posting sendDavid Dillow
srp_send_tsk_mgmt() was missing the proper DMA sync calls before posting the buffer to the device. Signed-off-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24IB/srp: Use list_first_entry()Bart Van Assche
Use the list_first_entry() macro in ib_srp instead of open-coding the equivalent, which makes the source code slightly more descriptive. The list_first_entry() macro itself was introduced in kernel 2.6.22. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24IB/srp: Reduce number of BUSY conditionsBart Van Assche
As proposed by the SRP (draft) standard, ib_srp reserves one ring element for SRP_TSK_MGMT requests. This patch makes sure that the SCSI mid-layer never tries to queue more than (SRP request limit) - 1 SCSI commands to ib_srp. This improves performance for targets whose request limit is less than or equal to SRP_NORMAL_REQ_SQ_SIZE by reducing the number of BUSY responses reported by ib_srp to the SCSI mid-layer. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24IB/srp: Eliminate two forward declarationsDavid Dillow
Signed-off-by: David Dillow <dillowda@ornl.gov> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-24Merge branch 'for-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) Update broken web addresses in arch directory. Update broken web addresses in the kernel. Revert "drivers/usb: Remove unnecessary return's from void functions" for musb gadget Revert "Fix typo: configuation => configuration" partially ida: document IDA_BITMAP_LONGS calculation ext2: fix a typo on comment in ext2/inode.c drivers/scsi: Remove unnecessary casts of private_data drivers/s390: Remove unnecessary casts of private_data net/sunrpc/rpc_pipe.c: Remove unnecessary casts of private_data drivers/infiniband: Remove unnecessary casts of private_data drivers/gpu/drm: Remove unnecessary casts of private_data kernel/pm_qos_params.c: Remove unnecessary casts of private_data fs/ecryptfs: Remove unnecessary casts of private_data fs/seq_file.c: Remove unnecessary casts of private_data arm: uengine.c: remove C99 comments arm: scoop.c: remove C99 comments Fix typo configue => configure in comments Fix typo: configuation => configuration Fix typo interrest[ing|ed] => interest[ing|ed] Fix various typos of valid in comments ... Fix up trivial conflicts in: drivers/char/ipmi/ipmi_si_intf.c drivers/usb/gadget/rndis.c net/irda/irnet/irnet_ppp.c
2010-10-23IB/mlx4: Signal node desc changes to SM by using FW to generate trap 144Jack Morgenstein
The Node Description cannot be changed via MADs (it is read-only). Until now, it was changed in the driver via sysfs, and the new Node Description was simply inserted by the driver into MAD responses (replacing the description returned by FW). System startup scripts use the sysfs interface to change the node description at driver startup to show the hostname, etc. However, this has a race condition: the SM could discover the original FW node description rather than the system-specific description if it queried the port before the startup scripts finish running. For mlx4, we fix this with a new FW command (SET_NODE) that allows passing the new node description to FW. When this command is invoked, FW sends a trap 144 to the SM. When it gets this trap, the SM can query the node to obtain the new node description -- thus eliminating the effects of the race. This patch simply calls SET_NODE command when a new node description is entered via sysfs (thus causing trap 144 to be issued by the FW). We ignore all failures of the SET_NODE command (including those caused by using a device FW that predates the SET_NODE command), since in that case things work just as before. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-23IB: Replace EXTRA_CFLAGS with ccflags-ymatt mooney
Signed-off-by: matt mooney <mfm@muteddisk.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2010-10-23RDMA/ucma: Allow tuning the max listen backlogSteve Wise
For iWARP connections, the connect request is carried in a TCP payload on an already established TCP connection. So if the ucma's backlog is full, the connection request is transmitted and acked at the TCP level by the time the connect request gets dropped in the ucma. The end result is the connection gets rejected by the iWARP provider. Further, a 32 node 256NP OpenMPI job will generate > 128 connect requests on some ranks. This patch increases the default max backlog to 1024, and adds a sysctl variable so the backlog can be adjusted at run time. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>