test: fix CO-RE issue on kernel 6.9 and above in eBPF tests

[Integral-Tech]

Background

• Pull request fix: Fix bpf CO-RE issue on 6.9 #483 only fixes the CO-RE issue in production code. eBPF tests still failed when running on kernel 6.9 and above.

Checklist

• The Pull Request has been fully tested
• There's an entry in the CHANGELOGS
• There is a user-facing docs PR against https://github.com/daeuniverse/dae

Full Changelogs

• Fix CO-RE issue on kernel 6.9 and above in eBPF tests

Issue Reference

Closes #[issue number]

Test Result

Before:

=== RUN   Test
    bpf_test.go:72: Failed to load objects: Verifier error: load program: bad CO-RE relocation:
                0: R1=ctx() R10=fp0
                ; int testcheck_mac_match(struct __sk_buff *skb) @ bpf_test.c:549
                0: (bf) r6 = r1                       ; R1=ctx() R6_w=ctx()
                1: (b7) r1 = 0                        ; R1_w=0
                ; struct lpm_key lpm_key = {}; @ bpf_test.c:551
                2: (7b) *(u64 *)(r10 -72) = r1        ; R1_w=0 R10=fp0 fp-72_w=0
                3: (7b) *(u64 *)(r10 -80) = r1        ; R1_w=0 R10=fp0 fp-80_w=0
                4: (bf) r2 = r10                      ; R2_w=fp0 R10=fp0
                ;  @ bpf_test.c:0
                5: (07) r2 += -80                     ; R2_w=fp-80
                6: (b7) r1 = 128                      ; R1_w=128
                ; instruction poisoned by CO-RE @ :0
                7: (85) call unknown#195896080
                invalid func unknown#195896080
                processed 8 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0
        
        field TestcheckMacMatch: program testcheck_mac_match: load program: bad CO-RE relocation: invalid func unknown#195896080 (14 line(s) omitted)
--- FAIL: Test (0.18s)
FAIL
FAIL    github.com/daeuniverse/dae/control/kern/tests   0.186s
FAIL
make: *** [Makefile:110: ebpf-test] Error 1

After:

=== RUN   Test
    bpf_test.go:130: Running test: AndMatch1
    bpf_test.go:130: Running test: AndMatch2
    bpf_test.go:130: Running test: AndMismatch
    bpf_test.go:130: Running test: DportMatch
    bpf_test.go:130: Running test: DportMismatch
    bpf_test.go:130: Running test: DscpMatch
    bpf_test.go:130: Running test: DscpMismatch
    bpf_test.go:130: Running test: IpsetMatch
    bpf_test.go:130: Running test: IpsetMismatch
    bpf_test.go:130: Running test: IpversionMatch
    bpf_test.go:130: Running test: IpversionMismatch
    bpf_test.go:130: Running test: L4protoMatch
    bpf_test.go:130: Running test: L4protoMismatch
    bpf_test.go:130: Running test: MacMatch
    bpf_test.go:130: Running test: MacMismatch
    bpf_test.go:130: Running test: NotMatch
    bpf_test.go:130: Running test: NotMismtach
    bpf_test.go:130: Running test: SourceIpsetMatch
    bpf_test.go:130: Running test: SourceIpsetMismatch
    bpf_test.go:130: Running test: SportMatch
    bpf_test.go:130: Running test: SportMismatch
--- PASS: Test (1.45s)
PASS
ok      github.com/daeuniverse/dae/control/kern/tests   1.459s

Test Environment: Arch Linux, 6.12.4-arch1-1