Open Fabrics Enterprise Distribution (OFED)
- RDMA CM in OFED 3.12 Release Notes
+ RDMA CM in OFED 3.18 Release Notes
- May 2014
+ June 2015
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communication must be over a specific RDMA device, and data transfers
are message based.
-The RDMA CM can control both the QP and communication management (connection setup /
-teardown) portions of an RDMA API, or only the communication management
-piece. It works in conjunction with the verbs
+The RDMA CM can control both the QP and communication management
+(connection setup / teardown) portions of an RDMA API, or only
+the communication management piece. It works in conjunction with the verbs
API defined by the libibverbs library. The libibverbs library provides the
underlying interfaces needed to send and receive data.
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2. New Features
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-for OFED 3.12
+for OFED 3.18
-Enhancements to the librdmacm release 1.0.18, versus the 1.0.17 release,
-mostly centered around improvements to the rsocket protocol and implementation.
-Specific enhancements to rsockets included:
+Enhancements to the librdmacm release 1.0.21, versus the 1.0.18 release,
+mostly centered around bug fixes. Notable feature enhancements include
+the following.
-* Now supports iWarp devices.
+* There were several updates and bug fixes to the rsockets code based
+ on more extensive testing and use cases. Rsockets now supports the
+ use of native InfiniBand addressing.
-* Support native IB addressing with SOCK_STREAM.
+* The RDMA CM was updated to support XRC QPs.
-* Provide the ability for an application to manually set Infiniband path
- record data. This allows applications using rsockets to take advantage
- of ibacm, a package which tries to address IB subnet scalability issues.
-
-* Add keepalive support for SOCK_STREAM.
-
-In addition to the rsocket enhancements, several bug fixes were incorporated,
-along with a new test program, cmtime, to measure connection establishment times.
+* The rsocket preload library allows for fine grained interception of
+ socket calls.
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3. Known Issues