kernel/include/rdma/rdma_cm.h, branch linux-4.16.y

RDMA/cma: Introduce API to read GIDs for multiple transports

2018-01-19T20:05:38Z

This patch introduces an API that allows legacy applications to query GIDs for a rdma_cm_id which is used during connection establishment. GIDs are stored and created differently for iWarp, IB and RoCE transports. Therefore rdma_read_gids() returns GID for all the transports hiding such internal details to caller. It is usable for client side and server side connections. In general continued use of GID based addressing outside of IB is discouraged, so rdma_read_gids() should not be used by any new ULPs. Signed-off-by: Parav Pandit Reviewed-by: Daniel Jurgens Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe

IB/SA: Rename ib_sa_path_rec to sa_path_rec

2017-05-01T18:37:28Z

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 Reviewed-by: Ira Weiny Signed-off-by: Dasaratharaman Chandramouli Signed-off-by: Doug Ledford

IB/core: Rename struct ib_ah_attr to rdma_ah_attr

2017-05-01T18:32:43Z

This patch simply renames struct ib_ah_attr to rdma_ah_attr as these fields specify attributes that are not necessarily specific to IB. Reviewed-by: Ira Weiny Reviewed-by: Don Hiatt Reviewed-by: Niranjana Vishwanathapura Reviewed-by: Sean Hefty Signed-off-by: Dasaratharaman Chandramouli Signed-off-by: Doug Ledford

rdma_cm: add rdma_consumer_reject_data helper function

2016-12-14T16:38:28Z

rdma_consumer_reject_data() will return the private data pointer and length if any is available. Reviewed-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Signed-off-by: Steve Wise Signed-off-by: Doug Ledford

rdma_cm: add rdma_is_consumer_reject() helper function

2016-12-14T16:38:28Z

Return true if the peer consumer application rejected the connection attempt. Reviewed-by: Sagi Grimberg Reviewed-by: Christoph Hellwig Signed-off-by: Steve Wise Reviewed-by: Bart Van Assche Signed-off-by: Doug Ledford

rdma_cm: add rdma_reject_msg() helper function

2016-12-14T16:38:28Z

rdma_reject_msg() returns a pointer to a string message associated with the transport reject reason codes. Reviewed-by: Christoph Hellwig Reviewed-by: Sagi Grimberg Signed-off-by: Steve Wise Reviewed-by: Bart Van Assche Signed-off-by: Doug Ledford

IB/core: Support for CMA multicast join flags

2016-08-04T01:06:46Z

Added UCMA and CMA support for multicast join flags. Flags are passed using UCMA CM join command previously reserved fields. Currently supporting two join flags indicating two different multicast JoinStates: 1. Full Member: The initiator creates the Multicast group(MCG) if it wasn't previously created, can send Multicast messages to the group and receive messages from the MCG. 2. Send Only Full Member: The initiator creates the Multicast group(MCG) if it wasn't previously created, can send Multicast messages to the group but doesn't receive any messages from the MCG. IB: Send Only Full Member requires a query of ClassPortInfo to determine if SM/SA supports this option. If SM/SA doesn't support Send-Only there will be no join request sent and an error will be returned. ETH: When Send Only Full Member is requested no IGMP join will be sent. Signed-off-by: Alex Vesker Reviewed by: Hal Rosenstock Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford

IB/core, cma: Make __attribute_const__ declarations sparse-friendly

2015-10-30T21:57:49Z

Move the __attribute_const__ declarations such that sparse understands that these apply to the function itself and not to the return type. This avoids that sparse reports error messages like the following: drivers/infiniband/core/verbs.c:73:12: error: symbol 'ib_event_msg' redeclared with different type (originally declared at include/rdma/ib_verbs.h:470) - different modifiers Fixes: 2b1b5b601230 ("IB/core, cma: Nice log-friendly string helpers") Signed-off-by: Bart Van Assche Cc: Sagi Grimberg Reviewed-by: Sagi Grimberg Signed-off-by: Doug Ledford

IB/cma: Add support for network namespaces

2015-10-28T16:32:48Z

Add support for network namespaces in the ib_cma module. This is accomplished by: 1. Adding network namespace parameter for rdma_create_id. This parameter is used to populate the network namespace field in rdma_id_private. rdma_create_id keeps a reference on the network namespace. 2. Using the network namespace from the rdma_id instead of init_net inside of ib_cma, when listening on an ID and when looking for an ID for an incoming request. 3. Decrementing the reference count for the appropriate network namespace when calling rdma_destroy_id. In order to preserve the current behavior init_net is passed when calling from other modules. Signed-off-by: Guy Shapiro Signed-off-by: Haggai Eran Signed-off-by: Yotam Kenneth Signed-off-by: Shachar Raindel Signed-off-by: Doug Ledford

IB/core, cma: Nice log-friendly string helpers

2015-05-18T17:43:52Z

Some of us keep revisiting the code to decode enumerations that appear in out logs. Let's borrow the nice logging helpers that exists in xprtrdma and rds for CMA events, IB events and WC statuses. Reviewd-by: Sean Hefty Signed-off-by: Sagi Grimberg Signed-off-by: Doug Ledford