bnxt_re: Add Userspace Library Support for RoCE Driver

[chandrakanth.patil_broadcom.com]

Summary

• This patch introduces userspace library support for the bnxt_re RoCE driver.
• The library can be linked with RDMA applications such as perftest and rping.
• The RoCE traffic has been tested with the rping and perftest utility.

[imp]

Overall this looks good, up to my ability to review it. A couple of really minor nits, plus a question based on a pull request that came in over the weekend.

contrib/ofed/libbnxtre/main.c

75

I just reviewed a patch on github that adds 0x1801 as a BCM57504 NPAR. Is that needed here?
https://github.com/freebsd/freebsd-src/pull/1306/files

lib/ofed/libbnxtre/Makefile

2

Stray blank line

3

Might be better to not use _<anything> for this, since I think that's reserved for the system implementation.

6

why is this in /lib instead of /usr/lib? I'm not saying it's wrong, I just don't understand.

[kib]

contrib/ofed/libbnxtre/abi.h

44

See style(9) for the proper ordering of includes

50

Can these defines be avoided? Eg. we have stdbool.h.

This really pollutes consumer's namespace.

lib/ofed/libbnxtre/Makefile

6

libmlx5.so is in /lib because libpcap.so is linked against it.
Is it possible to do RoCE sniffiing on bnxt?

[chandrakanth.patil_broadcom.com]

contrib/ofed/libbnxtre/abi.h

44

I will correct the ordering in the next revision.

50

Agreed. I'll fix it and update it in the new revision.

contrib/ofed/libbnxtre/main.c

75

0x1801 is not supported in RoCE.

lib/ofed/libbnxtre/Makefile

2

I kept the blank space for consistency with other modules Makefiles. I'll fix it and upload the new version

3

Ok. I have taken the _spath name for consistency with the other modules Makefiles. I will remove the underscore prefix. Should I use SPATH in uppercase to be consistent with other system variables?

6

Agreed to the Kib response.

[chandrakanth.patil_broadcom.com]

• Updated the Makefile. Renamed the _spath varaible to SPATH
• reordered the header files as per the style.9 man page standard
• removed the manual #define of bool flags.

[chandrakanth.patil_broadcom.com]

• I missed updating the SPATH for CFLAGS in the Makefile. This has been corrected in the current revision.

[kib]

I suppose the use of the library would come from the future changes. Also I cannot comment on the actual code for the bnxtre.

[chandrakanth.patil_broadcom.com]

Thank you all for reviewing the code.