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path: root/drivers/infiniband/hw/ipath/ipath_qp.c
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2008-01-25IB/ipath: Fix some sparse warnings about shadowed symbolsRoland Dreier
There are a few places in the ipath driver where a variable is re-declared within a block where it is already in scope. Most of these extra declarations can simply be removed, since the variable from the outer scope is used in a way so that it does not need to keep its variable across the block with the re-declaration. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-01-25IB/ipath: Add the work completion error code to the QP error debug outputRalph Campbell
Add the work completion error code to the QP error debug output. This makes it easier to determine the cause of the error. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-11-20IB/ipath: Fix error path in QP creationRalph Campbell
This patch fixes the code which frees the partially allocated QP resources if there was an error while creating the QP. In particular, the QPN wasn't deallocated and the QP wasn't removed from the hash table. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-10-09IB/ipath: Implement IB_EVENT_QP_LAST_WQE_REACHEDRalph Campbell
This patch implements the IB_EVENT_QP_LAST_WQE_REACHED event which is needed by ib_ipoib to destroy the QP when used in connected mode. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-10-09IB/ipath: Change UD to queue work requests like RC & UCRalph Campbell
The code to post UD sends tried to process work requests at the time ib_post_send() is called without using a WQE queue. This was fine as long as HW resources were available for sending a packet. This patch changes UD to be handled more like RC and UC and shares more code. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-09IB/ipath: Remove bogus RD_ATOMIC checks from modify_qpArthur Jones
The changeset 3859e39d ("IB/ipath: Support larger IB_QP_MAX_DEST_RD_ATOMIC and IB_QP_MAX_QP_RD_ATOMIC") added support for larger RD_ATOMIC values, but it failed to take out the stricter checks that were before these and hence had no effect. This patch takes out the bogus checks.... Signed-off-by: Arthur Jones <arthur.jones@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-09IB/ipath: Update copyright datesJohn Gregor
Now that it's June, it's about time to update the copyright notices of files that have changed. Signed-off-by: John Gregor <john.gregor@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-09IB/ipath: Clean send flags properly on QP resetRobert Walsh
Signed-off-by: Robert Walsh <robert.walsh@qlogic.com> Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-09IB/ipath: Fix maximum MTU reportingRobert Walsh
Although our chip supports 4K MTUs, our driver doesn't yet support this feature, so limit the maximum MTU to 2K until we get support for 4K MTUs implemented. Signed-off-by: Robert Walsh <robert.walsh@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-30IB/ipath: Don't corrupt pending mmap list when unmapped objects are freedRobert Walsh
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: Robert Walsh <robert.walsh@qlogic.com> Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Don't allow QPs 0 and 1 to be opened multiple timesBryan O'Sullivan
Signed-off-by: Robert Walsh <robert.walsh@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix CQ flushing when QP is modified to error stateBryan O'Sullivan
If a receive work request has been removed from the queue but has not had a CQ entry generated for it and the QP is modified to the error state, the completion entry generated is incorrect. This patch fixes the problem. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix QP error completion queue entriesRalph Campbell
When switching to the QP error state, the completion queue entries (error or flush) were not being generated correctly. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Fix up some debug messagesBryan O'Sullivan
ipath_dbg doesn't need the same prefixes that printk does. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-04-18IB/ipath: Support larger IB_QP_MAX_DEST_RD_ATOMIC and IB_QP_MAX_QP_RD_ATOMICRalph Campbell
This patch adds support for multiple RDMA reads and atomics to be sent before an ACK is required to be seen by the requester. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-02-04IB: Return qp pointer as part of ib_wcMichael S. Tsirkin
struct ib_wc currently only includes the local QP number: this matches the IB spec, but seems mostly useless. The following patch replaces this with the pointer to qp itself, and updates all low level drivers and all users. This has the following advantages: - Ability to get a per-qp context through wc->qp->qp_context - Existing drivers already have the qp pointer ready in poll cq, so this change actually saves a tiny bit (extra memory read) on data path (for ehca it would actually be expensive to find the QP pointer when polling a CQ, but ehca does not support SRQ so we can leave wc->qp as NULL for ehca) - Users that need the QP number can still get it through wc->qp->qp_num Use case: In IPoIB connected mode code, I have a common CQ shared by multiple QPs. To track connection usage, I need a way to get at some per-QP context upon the completion, and I would like to avoid allocating context object per work request just to stick a QP pointer into it. With this code, I can just use wc->qp->qp_context. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Flush RWQEs if access error or invalid error seenBryan O'Sullivan
If the receiver goes into the error state, we need to flush the posted receive WQEs. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-28IB/ipath: Limit # of packets sent without an ACK receivedBryan O'Sullivan
The sender requests an ACK every 1/2 MB to avoid retransmit timeouts that were causing MVAPICH mod_bw to fail after a predictable number of sends. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: handle sq_sig_all field correctlyBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: put a limit on the number of QPs that can be createdBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: validate path_mig_state properlyBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: be more strict about testing the modify QP verbBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: remove stale references to userspace SMABryan O'Sullivan
When we first submitted a userspace subnet management agent, it was rejected, so we left it out of the final driver submission. This patch removes a number of vestigial references to it. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: simplify debugging code after ipath_core and ib_ipath mergerBryan O'Sullivan
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: simplify layering codeBryan O'Sullivan
A lot of ipath layer code was only called in one place. Now that the ipath_core and ib_ipath drivers are merged, it's more sensible to simply inline the simple stuff that the layer code was doing. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/ipath: Performance improvements via mmap of queuesRalph Campbell
Improve performance of userspace post receive, post SRQ receive, and poll CQ operations for ipath by allowing userspace to directly mmap() receive queues and completion queues. This eliminates the copying between userspace and the kernel in the data path. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/uverbs: Pass userspace data to modify_srq and modify_qp methodsRalph Campbell
Pass a struct ib_udata to the low-level driver's ->modify_srq() and ->modify_qp() methods, so that it can get to the device-specific data passed in by the userspace driver. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-07-01[PATCH] IB/ipath: namespace cleanup: replace ips with ipathBryan O'Sullivan
Remove ips namespace from infinipath drivers. This renames ips_common.h to ipath_common.h. Definitions, data structures, etc. that were not used by kernel modules have moved to user-only headers. All names including ips have been renamed to ipath. Some names have had an ipath prefix added. Signed-off-by: Christian Bell <christian.bell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-01[PATCH] IB/ipath: ignore receive queue size if SRQ is specifiedBryan O'Sullivan
The receive work queue size should be ignored if the QP is created to use a shared receive queue according to the IB spec. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-01[PATCH] IB/ipath: rC receive interrupt performance changesBryan O'Sullivan
This patch separates QP state used for sending and receiving RC packets so the processing in the receive interrupt handler can be done mostly without locks being held. ACK packets are now sent without requiring synchronization with the send tasklet. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-01[PATCH] IB/ipath: enforce device resource limitsBryan O'Sullivan
These limits are somewhat artificial in that we don't actually have any device limits. However, the verbs layer expects that such limits exist and are enforced, so we make up arbitrary (but sensible) limits. Signed-off-by: Robert Walsh <robert.walsh@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-01[PATCH] IB/ipath: fix some memory leaks on failure pathsBryan O'Sullivan
Signed-off-by: Robert Walsh <robert.walsh@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-01[PATCH] IB/ipath: don't allow resources to be created with illegal valuesBryan O'Sullivan
Signed-off-by: Robert Walsh <robert.walsh@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-01[PATCH] IB/ipath: remove some duplicate codeBryan O'Sullivan
Signed-off-by: Robert Walsh <robert.walsh@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-01[PATCH] IB/ipath: share more common code between RC and UC protocolsBryan O'Sullivan
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-01[PATCH] IB/ipath: update copyrights and other strings to reflect new company ↵Bryan O'Sullivan
name Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: "Michael S. Tsirkin" <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-05-23IB/ipath: deref correct pointer when using kernel SMABryan O'Sullivan
At this point, the core QP structure hasn't been initialized, so what's in there isn't valid. Get the same information elsewhere. Signed-off-by: Bryan O'Sullivan <bos@pathscale.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-05-23IB/ipath: replace uses of LIST_POISONBryan O'Sullivan
Per Andrew's request. Signed-off-by: Bryan O'Sullivan <bos@pathscale.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-05-23IB/ipath: don't modify QP if changes failBryan O'Sullivan
Make sure modify_qp won't modify the QP if any of the changes failed. Signed-off-by: Bryan O'Sullivan <bos@pathscale.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-04-19IB/ipath: Make more names staticRoland Dreier
Make symbols that are only used in a single source file static. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-31IB/ipath: misc infiniband code, part 2Bryan O'Sullivan
Management datagram support, queue pairs, and reliable and unreliable connections. Signed-off-by: Bryan O'Sullivan <bos@pathscale.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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