T7607: Remove "set vpp settings host-resources nr_hugepages <N>" setting

[natali-rs1985]

Change Summary

nr_hugepages are now configured in set system option kernel memory hugepage-size 2M hugepage-count '2048' section

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Other (please describe): Delete config section

Related Task(s)

• https://vyos.dev/T7607

Related PR(s)

Proposed changes

How to test

vyos@vyos:~$ /usr/libexec/vyos/tests/smoke/cli/test_vpp.py
test_01_vpp_basic (__main__.TestVPP.test_01_vpp_basic) ... ok
test_02_vpp_vxlan (__main__.TestVPP.test_02_vpp_vxlan) ... ok
test_03_vpp_gre (__main__.TestVPP.test_03_vpp_gre) ... ok
test_04_vpp_geneve (__main__.TestVPP.test_04_vpp_geneve) ... skipped 'Skipping this test geneve index always is 0'
test_05_vpp_loopback (__main__.TestVPP.test_05_vpp_loopback) ... ok
test_06_vpp_bonding (__main__.TestVPP.test_06_vpp_bonding) ... skipped 'Skipping temporary bonding, sometimes get recursion T7117'
test_07_vpp_bridge (__main__.TestVPP.test_07_vpp_bridge) ... ok
test_08_vpp_ipip (__main__.TestVPP.test_08_vpp_ipip) ... ok
test_09_vpp_xconnect (__main__.TestVPP.test_09_vpp_xconnect) ... ok
test_10_vpp_driver_options (__main__.TestVPP.test_10_vpp_driver_options) ... ok
test_11_vpp_cpu_settings (__main__.TestVPP.test_11_vpp_cpu_settings) ... ok
test_12_vpp_cpu_corelist_workers (__main__.TestVPP.test_12_vpp_cpu_corelist_workers) ... ok
test_13_1_buffer_page_size (__main__.TestVPP.test_13_1_buffer_page_size) ... ok
test_13_2_statseg_page_size (__main__.TestVPP.test_13_2_statseg_page_size) ... ok
test_13_3_mem_page_size (__main__.TestVPP.test_13_3_mem_page_size) ... skipped 'Skipping'
test_14_mem_default_hugepage (__main__.TestVPP.test_14_mem_default_hugepage) ... ok
test_15_vpp_ipsec_xfrm_nl (__main__.TestVPP.test_15_vpp_ipsec_xfrm_nl) ... ok
test_16_vpp_cgnat (__main__.TestVPP.test_16_vpp_cgnat) ... ok
test_17_vpp_nat (__main__.TestVPP.test_17_vpp_nat) ... ok

----------------------------------------------------------------------
Ran 19 tests in 699.199s

OK (skipped=3)

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

[Copilot]

Pull Request Overview

This PR removes the deprecated nr_hugepages host resource setting and centralizes hugepage count management through system kernel options. It updates verification logic to use actual system metrics and refactors resource-check helpers accordingly.

• Replaced inline nr_hugepages validation in verify with a new verify_vpp_host_resources function that checks against HugePages_Total.
• Removed vm.nr_hugepages assignment in sysctl generation; updated helper functions (get_hugepages_info, get_hugepages_total, get_total_hugepages_free_memory) to normalize /proc/meminfo parsing.
• Dropped the nr-hugepages XML leaf from the VPP host_resources interface definition.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
src/conf_mode/vpp.py	Calls new verify_vpp_host_resources, removes old inline checks and vm.nr_hugepages sysctl
python/vyos/vpp/config_verify.py	Added verify_vpp_host_resources that enforces max_map_count >= 2 * HugePages_Total
python/vyos/vpp/config_resource_checks/memory.py	Extracted get_hugepages_info, added get_hugepages_total, refactored free-memory logic
interface-definitions/include/vpp_host_resources.xml.i	Removed nr-hugepages leaf node

Comments suppressed due to low confidence (2)

python/vyos/vpp/config_verify.py:404

• Add unit tests for verify_vpp_host_resources to cover cases where max_map_count is both below and above 2 * HugePages_Total, ensuring the new validation behaves correctly.

def verify_vpp_host_resources(config: dict):

python/vyos/vpp/config_verify.py:408

• [nitpick] The variable hugepages holds the total huge pages count; renaming it to total_hugepages would improve clarity.

    hugepages = mem_checks.get_hugepages_total()