rx: Introduce rxi_NetSend
Introduce a small wrapper around osi_NetSend, called rxi_NetSend. This
small wrapper allows future commits to change the code around our
osi_NetSend calls, without needing to change every single call site,
or every implementation of osi_NetSend.
Change most call sites to use rxi_NetSend, instead of osi_NetSend. Do
not change a few callers in the platform-specific kernel shutdown
sequence, since those call osi_NetSend for platform-specific reasons.
This commit on its own does not change any behavior with osi_NetSend;
it is just code reorganization.
Change-Id: I0a7eb39d85d4e542c2832bb40191ab49fb02d067
Reviewed-on: https://gerrit.openafs.org/13717
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>