linux/include/uapi/rdma, branch v3.11

RDMA/ucma: Allow user space to specify AF_IB when joining multicast

2013-06-21T06:35:45Z

Allow user space applications to join multicast groups using MGIDs directly. MGIDs may be passed using AF_IB addresses. Since the current multicast join command only supports addresses as large as sockaddr_in6, define a new structure for joining addresses specified using sockaddr_ib. Since AF_IB allows the user to specify the qkey when resolving a remote UD QP address, when joining the multicast group use the qkey value, if one has been assigned. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/ucma: Allow user space to pass AF_IB into resolve

2013-06-21T06:35:44Z

Allow user space applications to call resolve_addr using AF_IB. To support sockaddr_ib, we need to define a new structure capable of handling the larger address size. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/ucma: Allow user space to bind to AF_IB

2013-06-21T06:35:43Z

Support user space binding to addresses using AF_IB. Since sockaddr_ib is larger than sockaddr_in6, we need to define a larger structure when binding using AF_IB. This time we use sockaddr_storage to cover future cases. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/ucma: Name changes to indicate only IP addresses supported

2013-06-21T06:35:42Z

Several commands into the RDMA CM from user space are restricted to supporting addresses which fit into a sockaddr_in6 structure: bind address, resolve address, and join multicast. With the addition of AF_IB, we need to support addresses which are larger than sockaddr_in6. This will be done by adding new commands that exchange address information using sockaddr_storage. However, to support existing applications, we maintain the current commands and structures, but rename them to indicate that they only support IPv4 and v6 addresses. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/ucma: Add ability to query GID addresses

2013-06-21T06:35:42Z

Part of address resolution is mapping IP addresses to IB GIDs. With the changes to support querying larger addresses and more path records, also provide a way to query IB GIDs after resolution completes. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/ucma: Support querying when IB paths are not reversible

2013-06-21T06:35:40Z

The current query_route call can return up to two path records. The assumption being that one is the primary path, with optional support for an alternate path. In both cases, the paths are assumed to be reversible and are used to send CM MADs. With the ability to manually set IB path data, the rdma cm can eventually be capable of using up to 6 paths per connection: forward primary, reverse primary, forward alternate, reverse alternate, reversible primary path for CM MADs reversible alternate path for CM MADs. (It is unclear at this time if IB routing will complicate this) In order to handle more flexible routing topologies, add a new command to report any number of paths. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/ucma: Support querying for AF_IB addresses

2013-06-21T06:35:39Z

The sockaddr structure for AF_IB is larger than sockaddr_in6. The rdma cm user space ABI uses the latter to exchange address information between user space and the kernel. To support querying for larger addresses, define a new query command that exchanges data using sockaddr_storage, rather than sockaddr_in6. Unlike the existing query_route command, the new command only returns address information. Route (i.e. path record) data is separated. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

RDMA/cma: Set qkey for AF_IB

2013-06-21T06:35:37Z

Allow the user to specify the qkey when using AF_IB. The qkey is added to struct rdma_ucm_conn_param in place of a reserved field, but for backwards compatability, is only accessed if the associated rdma_cm_id is using AF_IB. Signed-off-by: Sean Hefty Signed-off-by: Roland Dreier

IB/uverbs: Implement memory windows support in uverbs

2013-02-21T19:59:09Z

The existing user/kernel uverbs API has IB_USER_VERBS_CMD_ALLOC/DEALLOC_MW. Implement these calls, along with destroying user memory windows during process cleanup. Signed-off-by: Haggai Eran Signed-off-by: Shani Michaeli Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier

UAPI: (Scripted) Disintegrate include/rdma

2012-11-22T08:43:10Z

Signed-off-by: David Howells Acked-by: Arnd Bergmann Acked-by: Thomas Gleixner Acked-by: Michael Kerrisk Acked-by: Paul E. McKenney Acked-by: Dave Jones Signed-off-by: Roland Dreier