Messages in this thread | | | Subject | [PATCH][RFC][0/4] InfiniBand userspace verbs implementation | Date | Mon, 4 Apr 2005 15:09:00 -0700 | From | Roland Dreier <> |
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Here is an initial implementation of InfiniBand userspace verbs. I plan to commit this code to the OpenIB repository shortly, and submit it for inclusion during the 2.6.13 cycle, so I am posting it early for comments.
This code, in conjunction with the libibverbs and libmthca userspace libraries available from the subversion trees at
https://openib.org/svn/gen2/branches/roland-uverbs/src/userspace/libibverbs https://openib.org/svn/gen2/branches/roland-uverbs/src/userspace/libmthca
enables userspace processes to access InfiniBand HCAs directly.
For those not familiar with the InfiniBand architecture, this so-called "userspace verbs" support allows userspace to post data path commands directly to the HCA. Resource allocation and other control path operations still go through the kernel driver.
Please take a look at this code if you have a chance. I would appreciate high-level criticism of the design and implementation as well as nitpicky complaints about coding style and typos.
In particular, the memory pinning code in in uverbs_mem.c could stand a looking over. In addition, a sanity check of the write()-based scheme for passing commands into the kernel in uverbs_main.c and uverbs_cmd.c is probably worthwhile.
Thanks, Roland
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