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2020-08-18RDMA/cm: Remove unused cm_classJason Gunthorpe1-3/+0
Previous commits removed all references to the /sys/class/infiniband_cm/ directory represented by the cm_class symbol. Remove the directory and cm_class. Fixes: a1a8e4a85cf7 ("rdma: Delete the ib_ucm module") Link: https://lore.kernel.org/r/0-v1-90096a98c476+205-remove_cm_leftovers_jgg@nvidia.com Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-07-29RDMA/include: Replace license text with SPDX tagsLeon Romanovsky1-0/+1
The header files in RDMA subsystem are dual licensed and can be described by simple SPDX tag, so replace all of them at once together with making them use the same coding style for header guard defines. Link: https://lore.kernel.org/r/20200719072521.135260-1-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-05-27RDMA/cm: Send and receive ECE parameter over the wireLeon Romanovsky1-1/+8
ECE parameters are exchanged through REQ->REP/SIDR_REP messages, this patch adds the data to provide to other side of CMID communication channel. Link: https://lore.kernel.org/r/20200526103304.196371-5-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-03-13RDMA/cm: Delete not implemented CM peer to peer communicationLeon Romanovsky1-1/+0
Peer to peer support was never implemented, so delete it to make code less clutter. Link: https://lore.kernel.org/r/20200310091438.248429-6-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Mark Zhang <markz@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2020-01-03RDMA/cm: Delete unused CM ARP functionsLeon Romanovsky1-34/+0
Clean the code by deleting ARP functions, which are not called anyway. Link: https://lore.kernel.org/r/20191212093830.316934-46-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-10-28RDMA/cm: Update copyright together with SPDX tagLeon Romanovsky1-28/+2
Add Mellanox to lust of copyright holders and replace copyright boilerplate with relevant SPDX tag. Link: https://lore.kernel.org/r/20191020071559.9743-4-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-10-28RDMA/cm: Use specific keyword to check defineLeon Romanovsky1-1/+1
There is a specific define keyword to check if define exists or not, let's use it instead of open-coded variant. Link: https://lore.kernel.org/r/20191020071559.9743-3-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-10-16RDMA/core: Annotate timeout as unsigned longLeon Romanovsky1-1/+1
The ucma users supply timeout in u32 format, it means that any number with most significant bit set will be converted to negative value by various rdma_*, cma_* and sa_query functions, which treat timeout as int. In the lowest level, the timeout is converted back to be unsigned long. Remove this ambiguous conversion by updating all function signatures to receive unsigned long. Reported-by: Noa Osherovich <noaos@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-07-30RDMA/cma: Constify path record, ib_cm_event, listen_id pointersParav Pandit1-1/+1
Constify several pointers such as path_rec, ib_cm_event and listen_id pointers in several functions. Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Daniel Jurgens <danielj@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-26IB/core: Introduce and use sgid_attr in CM requestsParav Pandit1-0/+13
For RoCE, when CM requests are received for RC and UD connections, netdevice of the incoming request is unavailable. Because of that CM requests are always forwarded to init_net namespace. Now that we have the GID attribute available, introduce SGID attribute in incoming CM requests and refer to the netdevice of it. This is similar to existing SGID attribute field in outgoing CM requests for RC and UD transports. Signed-off-by: Parav Pandit <parav@mellanox.com> Reviewed-by: Daniel Jurgens <danielj@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-06-25IB/cm: Pass the sgid_attr through various eventsParav Pandit1-0/+3
Make the sgid_attr available along with path information to the event consumer, this allows the consumer to keep using the same GID table entry as the event is related to. Signed-off-by: Parav Pandit <parav@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
2017-05-01IB/SA: Rename ib_sa_path_rec to sa_path_recDasaratharaman Chandramouli1-7/+7
Rename ib_sa_path_rec to a more generic sa_path_rec. This is part of extending ib_sa to also support OPA path records in addition to the IB defined path records. Reviewed-by: Don Hiatt <don.hiatt@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-12-14rdma_cm: add rdma_reject_msg() helper functionSteve Wise1-0/+6
rdma_reject_msg() returns a pointer to a string message associated with the transport reject reason codes. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-08-30IB/cm: Remove compare_data checksHaggai Eran1-12/+2
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: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-08-30IB/cm: Expose BTH P_Key in CM and SIDR request eventsHaggai Eran1-0/+6
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: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-08-30IB/cm: Share listening CM IDsHaggai Eran1-0/+4
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.html Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-08-30IB/cm: Expose service ID in request eventsHaggai Eran1-0/+1
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: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-05-05IB/core: Fix unaligned accessesDavid Ahern1-3/+4
Addresses the following kernel logs seen during boot of sparc systems: Kernel unaligned access at TPC[103bce50] cm_find_listen+0x34/0xf8 [ib_cm] Kernel unaligned access at TPC[103bce50] cm_find_listen+0x34/0xf8 [ib_cm] Kernel unaligned access at TPC[103bce50] cm_find_listen+0x34/0xf8 [ib_cm] Kernel unaligned access at TPC[103bce50] cm_find_listen+0x34/0xf8 [ib_cm] Kernel unaligned access at TPC[103bce50] cm_find_listen+0x34/0xf8 [ib_cm] Signed-off-by: David Ahern <david.ahern@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2014-04-01IB/core: Don't resolve passive side RoCE L2 address in CMA REQ handlerMoni Shoua1-1/+0
The code that resolves the passive side source MAC within the rdma_cm connection request handler was both redundant and buggy, so remove it. It was redundant since later, when an RC QP is modified to RTR state, the resolution will take place in the ib_core module. It was buggy because this callback also deals with UD SIDR exchange, for which we incorrectly looked at the REQ member of the CM event and dereferenced a random value. Fixes: dd5f03beb4f7 ("IB/core: Ethernet L2 attributes in verbs/cm structures") Signed-off-by: Moni Shoua <monis@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-01-14IB/core: Ethernet L2 attributes in verbs/cm structuresMatan Barak1-0/+1
This patch add the support for Ethernet L2 attributes in the verbs/cm/cma structures. When dealing with L2 Ethernet, we should use smac, dmac, vlan ID and priority in a similar manner that the IB L2 (and the L4 PKEY) attributes are used. Thus, those attributes were added to the following structures: * ib_ah_attr - added dmac * ib_qp_attr - added smac and vlan_id, (sl remains vlan priority) * ib_wc - added smac, vlan_id * ib_sa_path_rec - added smac, dmac, vlan_id * cm_av - added smac and vlan_id For the path record structure, extra care was taken to avoid the new fields when packing it into wire format, so we don't break the IB CM and SA wire protocol. On the active side, the CM fills. its internal structures from the path provided by the ULP. We add there taking the ETH L2 attributes and placing them into the CM Address Handle (struct cm_av). On the passive side, the CM fills its internal structures from the WC associated with the REQ message. We add there taking the ETH L2 attributes from the WC. When the HW driver provides the required ETH L2 attributes in the WC, they set the IB_WC_WITH_SMAC and IB_WC_WITH_VLAN flags. The IB core code checks for the presence of these flags, and in their absence does address resolution from the ib_init_ah_from_wc() helper function. ib_modify_qp_is_ok is also updated to consider the link layer. Some parameters are mandatory for Ethernet link layer, while they are irrelevant for IB. Vendor drivers are modified to support the new function signature. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-07-08IB/core: Move CM_xxx_ATTR_ID macros from cm_msgs.h to ib_cm.hJack Morgenstein1-0/+12
These macros will be reused by the mlx4 SRIOV-IB CM paravirtualization code, and there is no reason to have them declared both in the IB core in the mlx4 IB driver. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2012-01-04rdma/core: Fix sparse warningsSean Hefty1-0/+3
Clean up sparse warnings in the rdma core layer. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
2009-09-21trivial: fix typo "to to" in multiple filesAnand Gadiyar1-1/+1
Signed-off-by: Anand Gadiyar <gadiyar@ti.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-01-17IB: Remove __constant_{endian} usesHarvey Harrison1-6/+6
The base versions handle constant folding just fine, use them directly. The replacements are OK in the include/ files as they are not exported to userspace so we don't need the __ prefixed versions. This patch does not affect code generation at all. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2008-07-14RDMA: Improve include file coding styleDotan Barak1-2/+0
Remove subversion $Id lines and improve readability by fixing other coding style problems pointed out by checkpatch.pl. Signed-off-by: Dotan Barak <dotanba@gmail.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-10-09IB/cm: Modify interface to send MRAs in response to duplicate messagesSean Hefty1-2/+5
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: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-07-10IB/cm: Include HCA ACK delay in local ACK timeoutSean Hefty1-1/+0
The IB CM should include the HCA ACK delay when calculating the local ACK timeout value to use for RC QPs. If the HCA ACK delay is large enough relative to the packet life time, then if it is not taken into account, the calculated timeout value ends up being too small, which can result in "retry exceeded" errors. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-11-29IB/cm: Fix automatic path migration supportSean Hefty1-4/+12
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>
2006-06-17IB/ucm: Get rid of duplicate P_Key parameterSean Hefty1-2/+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>
2006-06-17IB/cm: Match connection requests based on private dataSean Hefty1-6/+17
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>
2005-10-17[IB] CM: bind IDs to a specific deviceSean Hefty1-4/+6
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>
2005-09-09[PATCH] IB CM: support CM redirJohn Kingman1-0/+1
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>
2005-08-26[PATCH] IB: move include files to include/rdmaRoland Dreier1-0/+568
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>
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