- 10 Oct, 2007 40 commits
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Roland Dreier authored
Firmware commands are sent to the HCA by writing multiple words to a command register block. Access to this block of registers is serialized with a mutex. However, on large SGI systems, problems were seen with multiple CPUs issuing FW commands at the same time, because the writes to the register block may be reordered within the system interconnect and reach the HCA in a different order than they were issued (even with the mutex). Fix this by adding an mmiowb() before dropping the mutex. Tested-by:
Arthur Kepner <akepner@sgi.com> Signed-off-by:
Roland Dreier <rolandd@cisco.com>
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Sean Hefty authored
Automatically queue MRA message to decrease the number of retries sent by the remote side during connection establishment. This also has the effect of increasing the overall connection timeout without using a longer retry time in the case of dropped packets. Signed-off-by:
Sean Hefty <sean.hefty@intel.com> Signed-off-by:
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Sean Hefty authored
The IB CM provides a message received acknowledged (MRA) message that can be sent to indicate that a REQ or REP message has been received, but will require more time to process than the timeout specified by those messages. In many cases, the application may not know how long it will take to respond to a CM message, but the majority of the time, it will usually respond before a retry has been sent. Rather than sending an MRA in response to all messages just to handle the case where a longer timeout is needed, it is more efficient to queue the MRA for sending in case a duplicate message is received. This avoids sending an MRA when it is not needed, but limits the number of times that a REQ or REP will be resent. It also provides for a simpler implementation than generating the MRA based on a timer event. (That is, trying to send the MRA after receiving the first REQ or REP if a response has not been generated, so that it is received at the remote side before a duplicate REQ or REP has been received) Signed-off-by:
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Roland Dreier authored
Increase the number of QPs allowed per multicast group from 8 to 56. This allows for one QP per core on 16-core systems, which are now quite common, and allows some space for future growth. This is basically the same patch that Jack Morgenstein <jackm@dev.mellanox.co.il> just supplied for mlx4. Signed-off-by: -
Jack Morgenstein authored
Increase the number of QPs allowed per multicast group from 8 to 56. This allows for one QP per core on 16-core systems, which are now quite common, and allows some space for future growth. Signed-off-by:
Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by:
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Jack Morgenstein authored
Implement FMRs for mlx4. This is an adaptation of code from mthca. Signed-off-by:
Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by:
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Jack Morgenstein authored
Write MTT entries directly to ICM from the driver (eliminating use of WRITE_MTT command). This reduces the number of FW commands needed to register an MR by at least a factor of 2 and speeds up memory registration significantly. This code will also be used to implement FMRs. Signed-off-by:
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Roland Dreier authored
Everything that uses caps.reserved_mtts expects it to be a count of MTT segments, not MTT entries. So convert the value that the FW gives us to a count of segments. Signed-off-by: -
Roland Dreier authored
Taking ilog2(dev->caps.reserved_mtts) to find out the order to pass to the MTT buddy allocator will do the wrong thing if reserved_mtts is ever not a power of 2. Be safe and use fls(dev->caps.reserved_mtts - 1). Signed-off-by: -
Jack Morgenstein authored
Enable having ICM tables in coherent memory, and use coherent memory for the dMPT table. This will allow writing MPT entries for MRs both via the SW2HW_MPT command and also directly by the driver for FMR remapping without needing to flush or worry about cacheline boundaries. Signed-off-by:
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Roland Dreier authored
ib_uverbs_release_event_file() is only used in uverbs_main.c, so make it static to that file. Also move the definition before the first use, so a forward declaration is not needed. Signed-off-by: -
Roland Dreier authored
The declaration of struct ib_user_mad_reg_req.method_mask[] exported to userspace was an array of __u32, but the kernel internally treated it as a bitmap made up of longs. This makes a difference for 64-bit big-endian kernels, where numbering the bits in an array of__u32 gives: |31.....0|63....31|95....64|127...96| while numbering the bits in an array of longs gives: |63..............0|127............64| 64-bit userspace can handle this by just treating method_mask[] as an array of longs, but 32-bit userspace is really stuck: the meaning of the bits in method_mask[] depends on whether the kernel is 32-bit or 64-bit, and there's no sane way for userspace to know that. Fix this by updating <rdma/ib_user_mad.h> to make it clear that method_mask[] is an array of longs, and using a compat_ioctl method to convert to an array of 64-bit longs to handle the 32-on-64 problem. This fixes the interface description to match existing behavior (so working binaries continue to work) in almost all situations, and gives consistent semantics in the case of 32-bit userspace that can run on either a 32-bit or 64-bit kernel, so that the same binary can work for both 32-on-32 and 32-on-64 systems. Signed-off-by: -
Roland Dreier authored
Add support for setting the P_Key index of sent MADs and getting the P_Key index of received MADs. This requires a change to the layout of the ABI structure struct ib_user_mad_hdr, so to avoid breaking compatibility, we default to the old (unchanged) ABI and add a new ioctl IB_USER_MAD_ENABLE_PKEY that allows applications that are aware of the new ABI to opt into using it. We plan on switching to the new ABI by default in a year or so, and this patch adds a warning that is printed when an application uses the old ABI, to push people towards converting to the new ABI. Signed-off-by:
Hal Rosenstock <hal@xsigo.com>
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Joachim Fenkes authored
Totally forgot this. Signed-off-by:
Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by:
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Hoang-Nam Nguyen authored
Signed-off-by:
Hoang-Nam Nguyen <hnguyen@de.ibm.com> Signed-off-by:
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Hoang-Nam Nguyen authored
Signed-off-by:
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Jack Morgenstein authored
display the following device information under /sys/class/infiniband/mlx4_X: board_id, fw_ver, hw_rev, hca_type. This patch makes this information available to userspace utilities such as ibstat and ibv_devinfo. Signed-off-by:
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Ralph Campbell authored
I was looking at the code for multicast.c and noticed that ib_sa_join_multicast() calls queue_join() which puts the request at the front of the group->pending_list. If this is a second request, it seems like it would interfere with process_join_error() since group->last_join won't point to the member at the head of the pending_list. The sequence would thus be: 1. ib_sa_join_multicast() puts member1 on head of pending_list and starts work thread 2. mcast_work_handler() calls send_join() which sets group->last_join to member1 3. ib_sa_join_multicast() puts member2 on head of pending_list 4. join operation for member1 receives failures response from SA. 5. join_handler() is called with error status 6. process_join_error() fails to process member1 since it doesn't match the first entry in the group->pending_list. The impact is that the failed join request is tossed. The second request is processed, and after it completes, the original request ends up being retried. This change also results in join requests being processed in FIFO order. Signed-off-by:
Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by:
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Satyam Sharma authored
* Replace {un}register_cpu_notifier with {un}register_hotcpu_notifier thereby losing a couple of #ifdef HOTPLUG_CPU pairs. * Move comp_pool_callback_nb declaration to below that of callback function so that initialization of .notifier_call and .priority can occur at build time itself and not runtime. * Mark the notifier_block (and callback function, and another static function used by it) as __cpuinit{data} for the sake of consistency and remove enclosing #ifdef. (This may increase size for modular build of this module, however, because these are no longer dropped unconditionally now.) Signed-off-by:Satyam Sharma <satyam@infradead.org> Acked-by:
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Roland Dreier authored
The SRC ("scalable RC") transport has been renamed to XRC ("extended RC"), to avoid having an abbreviation that is so easily confused with an abbreviation for "source." Update the HCA capability decoding output to use the new name. Signed-off-by: -
Roland Dreier authored
<asm/scatterlist.h> is not needed because everyplace it appears, <linux/scatterlist.h> also appears. <asm/io.h> is not needed because nothing seems to be using device IO anyway. Signed-off-by: -
Steve Wise authored
Calling arp_send() to initiate neighbour discovery (ND) doesn't do the full ND protocol. Namely, it doesn't handle retransmitting the arp request if it is dropped. The function neigh_event_send() does all this. Without doing full ND, RDMA address resolution fails in the presence of dropped ARP broadcast packets. Signed-off-by:
Steve Wise <swise@opengridcomputing.com> Acked-by:
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Joachim Fenkes authored
...because, on virtualized hardware like System p, we can't be sure that the physical pages behind them are contiguous otherwise. Signed-off-by:
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Joachim Fenkes authored
During ib_umem_get(), determine whether all pages from the memory region are hugetlb pages and report this in the "hugetlb" member. Low-level drivers can use this information if they need it. Signed-off-by:
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Sean Hefty authored
Provide the target service ID when performing a path record query to support optional QoS capability. QoS requires support from the SA. Signed-off-by:
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Sean Hefty authored
Export the ability to set the type of service to user space. Model the interface after setsockopt. Signed-off-by:
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Sean Hefty authored
Provide support to specify a type of service for a communication identifier. A new function call is used when dealing with IPv4 addresses. For IPv6 addresses, the ToS is specified through the traffic class field in the sockaddr_in6 structure. Signed-off-by:
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Sean Hefty authored
The QoS annex defines new fields for path records. Add them to the ib_sa for consumers that want to use them. Signed-off-by:
Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by:
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Sean Hefty authored
To support QoS within and between subnets, modify IPoIB to request specific Traffic Class values with path record queries, using the value associated with the IPoIB broadcast group. Signed-off-by:
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Hoang-Nam Nguyen authored
Signed-off-by:
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Joachim Fenkes authored
Nobody needed the SVNEHCA_ prefix anyway. Signed-off-by:
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Joachim Fenkes authored
We can use raw_smp_processor_id() here because the processor ID is only used for debug output and therefore our use is preemption-unsafe. Signed-off-by:
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Joachim Fenkes authored
Some firmware levels exhibit a race condition between H_ALLOC_RESOURCE(MR) and H_FREE_RESOURCE(MR). Work around this problem by locking these hvCalls against each other. Signed-off-by:
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Joachim Fenkes authored
Fix some modify_qp() issues related to path migration. Signed-off-by:
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Joachim Fenkes authored
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Joachim Fenkes authored
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Joachim Fenkes authored
...because -12 is easier to read than FFFFFFF4. Signed-off-by:
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Joachim Fenkes authored
Change hvcall trace output towards better readability: reg numbers instead of argument numbers, return code as signed decimal instead of unsigned hex. Signed-off-by:
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Hoang-Nam Nguyen authored
Use Paul's new remap_4k_pfn() function to map our 4K firmware contexts into user space on 64K-page machines without exposing neighboring firmware contexts. Return the context's offset within a 64K page to user space so it can determine the proper virtual address. For details about remap_4k_pfn(), see commit 721151d0 or http://patchwork.ozlabs.org/linuxppc/patch?id=10281Signed-off-by:
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Stefan Roscher authored
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