- 30 Aug, 2015 21 commits
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Sagi Grimberg authored
Signed-off-by:
Sagi Grimberg <sagig@mellanox.com> Signed-off-by:
Doug Ledford <dledford@redhat.com>
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Sagi Grimberg authored
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Sagi Grimberg authored
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Sagi Grimberg authored
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Sagi Grimberg authored
Use ib_alloc_mr with specific parameters. Change the existing callers. Signed-off-by:
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Sagi Grimberg authored
This was added in a thought of uniting all mr allocation and deallocation routines but the fact is we have a single deallocation routine already, ib_dereg_mr. And, move mlx5_ib_destroy_mr specific logic into mlx5_ib_dereg_mr (includes only signature stuff for now). And, fixup the only callers (iser/isert) accordingly. Signed-off-by:
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Haggai Eran authored
When no matching listening ID is found for a given request, the net_dev that was used to find the request isn't released. Fixes: 0b3ca768 ("IB/cma: Use found net_dev for passive connections") Signed-off-by:
Haggai Eran <haggaie@mellanox.com> Signed-off-by:
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Haggai Eran authored
Now that there are no ib_cm clients using the compare_data feature for matching IB CM requests' private data, remove the compare_data parameter of ib_cm_listen and remove the code implementing the feature. Signed-off-by:
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Haggai Eran authored
Use ib_cm_insert_listen to create listening IB CM IDs or share existing ones if needed. When given a request on a specific CM ID, the code now matches the request to the RDMA CM ID based on the request parameters, so it no longer needs to rely on the ib_cm's private data matching capabilities. Signed-off-by:
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Haggai Eran authored
When receiving a new connection in cma_req_handler, we actually already know the net_dev that is used for the connection's creation. Instead of calling cma_translate_addr to resolve the new connection id's source address, just use the net_dev that was found. Signed-off-by:
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Haggai Eran authored
Pass incoming request parameters through the relevant IPv4/IPv6 routing tables and make sure the network stack is configured to handle such requests. Signed-off-by:
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Haggai Eran authored
Instead of relying on a the ib_cm module to check an incoming CM request's private data header, add these checks to the RDMA CM module. This allows a following patch to to clean up the ib_cm interface and remove the code that looks into the private headers. It will also allow supporting namespaces in RDMA CM by making these checks namespace aware later on. Signed-off-by:
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Haggai Eran authored
The rdma_cm module will later use the P_Key from the BTH to de-mux requests. See discussion at: http://www.spinics.net/lists/netdev/msg336067.html Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Cc: Liran Liss <liranl@mellanox.com> Signed-off-by:
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Haggai Eran authored
Add helper functions to access the IDRs by port-space and port number. Pass around the port-space enum in cma.c instead of using pointers to port-space IDRs. Signed-off-by:
Yotam Kenneth <yotamke@mellanox.com> Signed-off-by:
Shachar Raindel <raindel@mellanox.com> Signed-off-by:
Guy Shapiro <guysh@mellanox.com> Signed-off-by:
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Haggai Eran authored
When receiving a connection request, rdma_cm needs to associate the request with a network device, in order to disambiguate requests. To do this, it needs to know the request's destination IP. For this the module needs to allow getting this information from the private data in the request packet, instead of relying on the information already being in the listening RDMA CM ID. When creating a new incoming connection ID, the code in cma_save_ip{4,6}_info can no longer rely on the listener's private data to find the port number, so it reads it from the requested service ID. Signed-off-by: -
Haggai Eran authored
Enabling network namespaces for RDMA CM will allow processes on different namespaces to listen on the same port. In order to leave namespace support out of the CM layer, this requires that multiple RDMA CM IDs will be able to share a single CM ID. This patch adds infrastructure to retrieve an existing listening ib_cm_id, based on its device and service ID, or create a new one if one does not already exist. It also adds a reference count for such instances (cm_id_private.listen_sharecount), and prevents cm_destroy_id from destroying a CM if it is still shared. See the relevant discussion [1]. [1] Re: [PATCH v3 for-next 05/13] IB/cm: Reference count ib_cm_ids http://www.spinics.net/lists/netdev/msg328860.htmlReviewed-by:Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by:
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Haggai Eran authored
Expose the service ID on an incoming CM or SIDR request to the event handler. This will allow the RDMA CM module to de-multiplex connection requests based on the information encoded in the service ID. Acked-by:
Sean Hefty <sean.hefty@intel.com> Signed-off-by:
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Guy Shapiro authored
Implement the get_net_device_by_port_pkey_ip callback that returns network device to ib_core according to connection parameters. Check the ipoib device and iterate over all child devices to look for a match. For each IPoIB device we iterate through all upper devices when searching for a matching IP, in order to support bonding. Signed-off-by:
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Yotam Kenneth authored
In the case of IPoIB, and maybe in other cases, the network device is managed by an upper-layer protocol (ULP). In order to expose this network device to other users of the IB device, let ULPs implement a callback that returns network device according to connection parameters. The IB device and port, together with the P_Key and the GID should be enough to uniquely identify the ULP net device. However, in current kernels there can be multiple IPoIB interfaces created with the same GID. Furthermore, such configuration may be desireable to support ipvlan-like configurations for RDMA CM with IPoIB. To resolve the device in these cases the code will also take the IP address as an additional input. Reviewed-by:
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Haggai Eran authored
An ib_client callback that is called with the lists_rwsem locked only for read is protected from changes to the IB client lists, but not from ib_unregister_device() freeing its client data. This is because ib_unregister_device() will remove the device from the device list with lists_rwsem locked for write, but perform the rest of the cleanup, including the call to remove() without that lock. Mark client data that is undergoing de-registration with a new going_down flag in the client data context. Lock the client data list with lists_rwsem for write in addition to using the spinlock, so that functions calling the callback would be able to lock only lists_rwsem for read and let callbacks sleep. Since ib_unregister_client() now marks the client data context, no need for remove() to search the context again, so pass the client data directly to remove() callbacks. Reviewed-by:
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Haggai Eran authored
Currently the RDMA subsystem's device list and client list are protected by a single mutex. This prevents adding user-facing APIs that iterate these lists, since using them may cause a deadlock. The patch attempts to solve this problem by adding a read-write semaphore to protect the lists. Readers now don't need the mutex, and are safe just by read-locking the semaphore. The ib_register_device, ib_register_client, ib_unregister_device, and ib_unregister_client functions are modified to lock the semaphore for write during their respective list modification. Also, in order to make sure client callbacks are called only between add() and remove() calls, the code is changed to only add items to the lists after the add() calls and remove from the lists before the remove() calls. This patch attempts to solve a similar need [1] that was seen in the RoCE v2 patch series. [1] http://www.spinics.net/lists/linux-rdma/msg24733.htmlReviewed-by:
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- 29 Aug, 2015 19 commits
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Steve Wise authored
This functionality already exists via the max_sge_rd device capability. Signed-off-by:
Steve Wise <swise@opengridcomputing.com> Signed-off-by:
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Steve Wise authored
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Steve Wise authored
Applications must not assume that max_sge and max_sge_rd are the same, Hence expose max_sge_rd correctly as well. Signed-off-by:
Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by:
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Sagi Grimberg authored
Applications must not assume that max_sge and max_sge_rd are the same, Hence expose max_sge_rd correctly as well. Reported-by:
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Jeff Becker authored
Running checkpatch.pl on mad.c produces several "ERROR: code indent should use tabs where possible" messages. This patch fixes these. Signed-off-by:
Jeff Becker <Jeffrey.C.Becker@nasa.gov> Signed-off-by:
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Mike Marciniszyn authored
Signed-off-by:
Andrew Friedley <andrew.friedley@intel.com> Signed-off-by:
Arthur Kepner <arthur.kepner@intel.com> Signed-off-by:
Brendan Cunningham <brendan.cunningham@intel.com> Signed-off-by:
Brian Welty <brian.welty@intel.com> Signed-off-by:
Caz Yokoyama <caz.yokoyama@intel.com> Signed-off-by:
Dean Luick <dean.luick@intel.com> Signed-off-by:
Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by:
Easwar Hariharan <easwar.hariharan@intel.com> Signed-off-by:
Harish Chegondi <harish.chegondi@intel.com> Signed-off-by:
Ira Weiny <ira.weiny@intel.com> Signed-off-by:
Jim Snow <jim.m.snow@intel.com> Signed-off-by:
John Gregor <john.a.gregor@intel.com> Signed-off-by:
Jubin John <jubin.john@intel.com> Signed-off-by:
Kaike Wan <kaike.wan@intel.com> Signed-off-by:
Kevin Pine <kevin.pine@intel.com> Signed-off-by:
Kyle Liddell <kyle.liddell@intel.com> Signed-off-by:
Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by:
Ravi Krishnaswamy <ravi.krishnaswamy@intel.com> Signed-off-by:
Sadanand Warrier <sadanand.warrier@intel.com> Signed-off-by:
Sanath Kumar <sanath.s.kumar@intel.com> Signed-off-by:
Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by:
Vlad Danushevsky <vladimir.danusevsky@intel.com> Signed-off-by:
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Dennis Dalessandro authored
This patch adds the value of the CNP opcode to the existing list of enumerated opcodes in ib_pack.h Add common OPA header definitions for driver build: - opa_port_info.h - opa_smi.h - hfi1_user.h Additionally, ib_mad.h, has additional definitions that are common to ib_drivers including: - trap support - cca support The qib driver has the duplication removed in favor those in ib_mad.h Reviewed-by:
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Steve Wise authored
The HW hasn't been sold since 2005, and the SW has definite bit rot. Its time to remove it. So move it to staging for a few releases and then remove it after that. Signed-off-by:
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Dennis Dalessandro authored
It is now time for the ipath driver to begin to be phased out of the kernel. This patch moves the ipath driver from the Infiniband sub tree to the staging area where it will remain until the code is removed from the kernel in a few releases. Reviewed-by:
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Doug Ledford authored
Create the rdma directory in the staging area for use as we deprecate some older drivers and as we bring in some new drivers that are in need of work. Update the MAINTAINERS file so that updates to these files go to linux-rdma@vger.kernel.org. Expected lifespan of this directory is three releases for any deprecated drivers moved here and an unknown, but theoretically bounded amount of time for the new drivers as a new core RDMA transfer library needs to be written and the drivers modified to use it in order for them to move out of this directory. Signed-off-by: -
Hariprasad S authored
Add support for ipv6 address handling clip api provided by lld Signed-off-by:
Hariprasad Shenai <hariprasad@chelsio.com> Acked-by:
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Spencer Baugh authored
Resolving a link-local IPv6 address with an unspecified source address was broken by commit 5462eddd, which prevented the IPv6 stack from learning the scope id of the link-local IPv6 address, causing random failures as the IP stack chose a random link to resolve the address on. This commit 5462eddd made us bail out of cma_check_linklocal early if the address passed in was not an IPv6 link-local address. On the address resolution path, the address passed in is the source address; if the source address is the unspecified address, which is not link-local, we will bail out early. This is mostly correct, but if the destination address is a link-local address, then we will be following a link-local route, and we'll need to tell the IPv6 stack what the scope id of the destination address is. This used to be done by last line of cma_check_linklocal, which is skipped when bailing out early: dev_addr->bound_dev_if = sin6->sin6_scope_id; (In cma_bind_addr, the sin6_scope_id of the source address is set to the sin6_scope_id of the destination address, so this is correct) This line is required in turn for the following line, L279 of addr6_resolve, to actually inform the IPv6 stack of the scope id: fl6.flowi6_oif = addr->bound_dev_if; Since we can only know we are in this failure case when we have access to both the source IPv6 address and destination IPv6 address, we have to deal with this further up the stack. So detect this failure case in cma_bind_addr, and set bound_dev_if to the destination address scope id to correct it. Signed-off-by:
Spencer Baugh <sbaugh@catern.com> Signed-off-by:
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Jason Gunthorpe authored
Something like this: CPU A CPU B Acked-by:
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Hariprasad S authored
This enables ORD/IRD negotiation and its about time to enable it by default Signed-off-by:
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Steve Wise authored
Currently the sg tablesize, which dictates fast register page list depth to use, does not take into account the limits of the rdma device. So adjust it once we discover the device fastreg max depth limit. Also adjust the max_sectors based on the resulting sg tablesize. Signed-off-by:
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Roland Dreier authored
The only place that assigns mr inside the loop already does a break. So "if (mr)" will never be true here since the function initializes mr to NULL at the top. We can just drop the extra if and break here. Signed-off-by:
Roland Dreier <roland@purestorage.com> Acked-by:
Eli Cohen <eli@mellanox.com> Signed-off-by:
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Mike Marciniszyn authored
The lkey table is allocated with with a get_user_pages() with an order based on a number of index bits from a module parameter. The underlying kernel code cannot allocate that many contiguous pages. There is no reason the underlying memory needs to be physically contiguous. This patch: - switches the allocation/deallocation to vmalloc/vfree - caps the number of bits to 23 to insure at least 1 generation bit o this matches the module parameter description Cc: stable@vger.kernel.org Reviewed-by:
Vinit Agnihotri <vinit.abhay.agnihotri@intel.com> Signed-off-by:
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Sagi Grimberg authored
Should be all the page sizes that are supported by the device. Reported-by:
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Sagi Grimberg authored
The mlx5 driver exposes device capability IB_DEVICE_LOCAL_DMA_LKEY but does not set the the device local_dma_lkey. This breaks rpcrdma drivers. Query and set this lkey when creating the device resources. Signed-off-by:
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