[ofa-general] OFED, the backported <linux/scatterlist.h> header and sg_init_table()

[Jack Morgenstein]

On Tuesday 05 May 2009 18:06, Jon Mason wrote:
> No, we currently duplicate all the scatterlist functionality.  Including
> ncrypto.h would greatly simplify the backport headers, but it is a
> RHEL5.2/5.3 only solution.  If this change is needed for all other
> backports, then a better solution will be needed.
> 
Each backport has its OWN directory.  The backports are not identical
for all kernels.  There is absolutely no problem with handling backports
per kernel/per distribution. Therefore, the RHEL 5.2/5.3 solution can be
used for those backports alone, without affecting any of the others.
Other backports will have a different change.

For RHEL5.2/5.3, my concern is that if someone will actually write an ncrypto kernel
application, and include ncrypto.h along with the infiniband headers, there will be
compilation problems because the scatterlist functionality fixes will appear twice.

Specifically, OFED 1.4.1 has the following INDIVIDUAL/independent backports, and
each one is handled differently:
2.6.16
2.6.16_sles10
2.6.16_sles10_sp1
2.6.16_sles10_sp2
2.6.17
2.6.18
2.6.18-EL5.1
2.6.18-EL5.2
2.6.18-EL5.3
2.6.18_FC6 (also for EL5.0)
2.6.18_suse10_2
2.6.19
2.6.20
2.6.21
2.6.22
2.6.22_suse10_3
2.6.23
2.6.24
2.6.25
2.6.26
2.6.9_U4
2.6.9_U5
2.6.9_U6
2.6.9_U7

- Jack