lwIP | embeddedsw/xemacps: Expand protection to BD ring (!38)

[Kinsey Moore (@opticron)]

Kinsey Moore created a merge request: https://gitlab.rtems.org/rtems/pkg/rtems-lwip/-/merge_requests/38

Project:Branches: opticron/rtems-lwip:brmain-expand-emcaps-locking to rtems/pkg/rtems-lwip:main
Author:   Kinsey Moore
Assignee: Kinsey Moore



## Summary

embeddedsw/xemacps: Expand protection to BD ring

This expands the locking protection of pbufs to encompass calls to the
BD Ring API. Testing has shown that this descriptor ring is also
succeptible to the same issues as the pbuf arrays under heavy load.


rtemslwip/zynqmp/netstart: Drop core-zero locking of threads

This removes the locking of emacps servicing thread to core 0 as it is
no longer necessary given the added locking around the BD ring
manipulations.

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