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path: root/drivers/infiniband/core/cm.c
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2006-12-12RDMA/cma: Allow early transition to RTS to handle lost CM messagesSean Hefty1-0/+4
During connection establishment, the passive side of a connection can receive messages from the active side before the connection event has been delivered to the user. Allow the passive side to send messages in response to received data before the event is delivered. To handle the case where the connection messages are lost, a new rdma_notify() function is added that users may invoke to force a connection into the established state. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-12-05Merge branch 'master' of ↵David Howells1-31/+90
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/infiniband/core/iwcm.c drivers/net/chelsio/cxgb2.c drivers/net/wireless/bcm43xx/bcm43xx_main.c drivers/net/wireless/prism54/islpci_eth.c drivers/usb/core/hub.h drivers/usb/input/hid-core.c net/core/netpoll.c Fix up merge failures with Linus's head and fix new compilation failures. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-11-30IB/cm: Fix automatic path migration supportSean Hefty1-27/+88
The ib_cm_establish() function is replaced with a more generic ib_cm_notify(). This routine is used to notify the CM that failover has occurred, so that future CM messages (LAP, DREQ) reach the remote CM. (Currently, we continue to use the original path) This bumps the userspace CM ABI. New alternate path information is captured when a LAP message is sent or received. This allows QP attributes to be initialized for the user when a new path is loaded after failover occurs. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-30RDMA/cm: Remove setting local write as part of QP access flagsDotan Barak1-2/+1
The qp_access_flags are for remote access permissions only, so IB_ACCESS_LOCAL_WRITE is an invalid value. Remove it from the values set by cm_init_qp_init_attr() and cma_init_ib_qp(). Signed-off-by: Dotan Barak <dotanb@mellanox.co.il> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-30IB: kmemdup() cleanupEric Sesterhenn1-2/+1
Replace open coded kmemdup() to save some screen space, and allow inlining/not inlining to be triggered by gcc. Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-22WorkStruct: make allyesconfigDavid Howells1-10/+9
Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-10-10IB/cm: Send DREP in response to unmatched DREQSean Hefty1-1/+29
Currently a DREP is only sent in response to a DREQ if a connection has been found matching the DREQ, and it is in the proper state. Once a DREP is sent, the local connection moves into timewait. Duplicate DREQs received while in this state result in re-sending the DREP. However, it's likely that the local connection will enter and exit timewait before the remote side times out a lost DREP and resends a DREQ. To handle this, we send a DREP in response to a DREQ, even if a local connection is not found. This avoids maintaining disconnected id's in timewait states for excessively long times, just to handle a lost DREP. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-10-10IB/cm: Fix timewait crash after module unloadSean Hefty1-18/+36
If the ib_cm module is unloaded while id's are still in timewait, the CM will destroy the work queue used to process timewait. Once the id's exit timewait, their timers will fire, leading to a crash trying to access the destroyed work queue. We need to track id's that are in timewait, and cancel their deferred work on module unload. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-23IB/cm: Do not track remote QPN in timewait stateMichael S. Tsirkin1-0/+2
Do not track remote QPN in TimeWait state, since QP is not connected. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-23RDMA: iWARP Core Changes.Tom Tucker1-0/+3
Modifications to the existing rdma header files, core files, drivers, and ulp files to support iWARP, including: - Hook iWARP CM into the build system and use it in rdma_cm. - Convert enum ib_node_type to enum rdma_node_type, which includes the possibility of RDMA_NODE_RNIC, and update everything for this. Signed-off-by: Tom Tucker <tom@opengridcomputing.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-23IB: Whitespace fixesRoland Dreier1-1/+1
Remove some trailing whitespace that has snuck in despite the best efforts of whitespace=error-all. Also fix a few other whitespace bogosities. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-23IB/cm: Randomize starting comm IDSean Hefty1-8/+16
Randomize the starting local comm ID to avoid getting a rejected connection due to a stale connection after a system reboot or reloading of the ib_cm. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-23IB/cm: Use correct reject code for invalid GIDSean Hefty1-11/+21
Set the reject code properly when rejecting a request that contains an invalid GID. A suitable GID is returned by the IB CM in the additional reject information (ARI). This is a spec compliancy issue. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-23IB/cm: Enable atomics along with RDMA readsSean Hefty1-1/+2
Enable atomic operations along with RDMA reads if a local RDMA read/atomic depth is provided by the user. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-08-03IB/cm: Fix error handling in ib_send_cm_reqSean Hefty1-1/+3
Report error code rather than success (0) on failure allocating timewait_info in ib_send_cm_req(). Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-07-15[PATCH] IB/cm: drop REQ when out of memoryMichael S. Tsirkin1-3/+18
If a user of the IB CM returns -ENOMEM from their connection callback, simply drop the incoming REQ - do not attempt to send a reject. This should allow the sender to retry the request. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-01IB/core: Set alternate port number when initializing QP attributesSean Hefty1-0/+1
Set alternate port number when initializing QP attributes. This bug is OpenFabrics bugzilla bug #160. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-18IB/cm: Use address handle helpersSean Hefty1-17/+8
Use new ib_init_ah_from_wc() and ib_init_ah_from_path() helper functions to clean up the IB CM. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-18IB/ucm: Get rid of duplicate P_Key parameterSean Hefty1-1/+1
The P_Key is provided into a SIDR REQ in two places, once as a parameter, and again in the path record. Remove the P_Key as a parameter and always use the one given in the path record. This change has no practical effect on ABI functionality. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-06-18IB/cm: remove unneeded flush_workqueueMichael S. Tsirkin1-1/+0
destroy_workqueue() already does flush_workqueue(). Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Sean Hefty <sean.hefty@intel.com>
2006-06-18IB/cm: Match connection requests based on private dataSean Hefty1-12/+79
Extend matching connection requests to listens in the InfiniBand CM to include private data checks. This allows applications to listen on the same service identifier, with private data directing the request to the appropriate application. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-05-13IB: refcount race fixesSean Hefty1-5/+7
Fix race condition during destruction calls to avoid possibility of accessing object after it has been freed. Instead of waking up a wait queue directly, which is susceptible to a race where the object is freed between the reference count going to 0 and the wake_up(), use a completion to wait in the function doing the freeing. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-03-20IB/cm: Check cm_id state before handling a REPSean Hefty1-18/+24
Move checking the state of a cm_id before modifying it when handling a REP. This fixes a bug seen under MPI scale-up testing, where a NULL timewait_info pointer is dereferenced if a request times out before a REP is received. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-01-15[PATCH] Unlinline a bunch of other functionsArjan van de Ven1-2/+2
Remove the "inline" keyword from a bunch of big functions in the kernel with the goal of shrinking it by 30kb to 40kb Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-10IB: Add node_guid to struct ib_deviceSean Hefty1-24/+5
Add a node_guid field to struct ib_device. It is the responsibility of the low-level driver to initialize this field before registering a device with the midlayer. Convert everyone to looking at this field instead of calling ib_query_device() when all they want is the node GUID, and remove the node_guid field from struct ib_device_attr. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-11-30IB/cm: avoid reusing local IDSean Hefty1-1/+2
Use an increasing local ID to avoid re-using identifiers while messages may still be outstanding on the old ID. Without this, a quick connect-disconnect-connect sequence can fail by matching messages for the new connection with the old connection. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-11-30IB/cm: correct reported reject codeSean Hefty1-4/+9
Change reject code from TIMEOUT to CONSUMER_REJECT when destroying a cm_id in the process of connecting. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-11-02[IB] kzalloc() conversionsRoland Dreier1-4/+2
Replace kmalloc()+memset(,0,) with kzalloc(), for a net savings of 35 source lines and about 500 bytes of text. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-25[IB] Fix MAD layer DMA mappings to avoid touching data buffer once mappedSean Hefty1-92/+45
The MAD layer was violating the DMA API by touching data buffers used for sends after the DMA mapping was done. This causes problems on non-cache-coherent architectures, because the device doing DMA won't see updates to the payload buffers that exist only in the CPU cache. Fix this by having all MAD consumers use ib_create_send_mad() to allocate their send buffers, and moving the DMA mapping into the MAD layer so it can be done just before calling send (and after any modifications of the send buffer by the MAD layer). Tested on a non-cache-coherent PowerPC 440SPe system. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-24[IB] CM: Fix initialization of QP attributes for UC QPs.Sean Hefty1-14/+24
Fix cm_init_qp_init_attr(), cm_init_qp_rtr_attr() and cm_init_qp_rts_attr() so that they correctly handle the differences between UC and RC QPs. This fixes problems with setting up UC QPs through the CM. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-24Manual merge of for-linus to upstream (fix conflicts in ↵Roland Dreier1-0/+1
drivers/infiniband/core/ucm.c)
2005-10-24[IB] Add idr_destroy() calls on module unloadRoland Dreier1-0/+1
Add idr_destroy() calls to the module_exit() functions of the four IB driver modules that use idrs, so we don't leak idr_layer_cache objects when these modules are unloaded. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-18[IB] CM: bind IDs to a specific deviceSean Hefty1-13/+28
Bind communication identifiers to a device to support device removal. Export per HCA CM devices to userspace. Signed-off-by: Sean Hefty <sean.hefty@intel.com>
2005-09-10[PATCH] IB: fix CM use-after-freeRoland Dreier1-0/+1
If the CM REQ handling function gets to error2, then it frees cm_id_priv->timewait_info. But the next line goes through ib_destroy_cm_id() -> ib_send_cm_rej() -> cm_reset_to_idle(), which ends up calling cm_cleanup_timewait(), which dereferences the pointer we just freed. Make sure we clear cm_id_priv->timewait_info after freeing it, so that doesn't happen. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-09-10[PATCH] IB CM: support CM redirJohn Kingman1-1/+3
Changes to CM to support CM and port redirection (REJ reason 24). Signed-off-by: John Kingman <kingman <at> storagegear.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-08-27[PATCH] IB: move include files to include/rdmaRoland Dreier1-2/+2
Move the InfiniBand headers from drivers/infiniband/include to include/rdma. This allows InfiniBand-using code to live elsewhere, and lets us remove the ugly EXTRA_CFLAGS include path from the InfiniBand Makefiles. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-08-27[PATCH] IB: sparse endianness cleanupSean Hefty1-59/+62
Fix sparse warnings. Use __be* where appropriate. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-07-28[PATCH] IB: Add the kernel CM implementationHal Rosenstock1-0/+3324
Add the kernel CM implementation Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Hal Rosenstock <halr@voltaire.com> Cc: Roland Dreier <rolandd@cisco.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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