ifnet(9): split ifc_alloc_unit() (should make code a bit cleaner).
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Authored by avos on Sep 30 2017, 9:27 PM.

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glebius

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network

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rS324813: MFC r324672:
rS324812: MFC r324672:
rS324672: ifnet(9): split ifc_alloc_unit() (should simplify code flow)

Summary

Allocate smallest unit number from pool from ifc_alloc_unit_next() and exact unit number (if available) from ifc_alloc_unit_specific().

While here, fix potential endless loop (*unit < 0 -> alloc_unr() succeeds but ifunit() fails -> (*unit)++ and then alloc_unr_specific() fails ->(*unit) is overridden with return result (-1) and then used instead of previous unit number).

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rS FreeBSD src repository - subversion

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avos created this revision.Sep 30 2017, 9:27 PM

Herald added subscribers: ae, imp. · View Herald TranscriptSep 30 2017, 9:27 PM

Does this fix this bug? https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217401

Yes (but without reassigning *unit - it will not change after alloc_unr_specific() anyway).

Can you please grab the PR? :)

Closed by commit rS324672: ifnet(9): split ifc_alloc_unit() (should simplify code flow) (authored by avos). · Explain WhyOct 16 2017, 9:21 PM

This revision was automatically updated to reflect the committed changes.

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if_clone.c

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ifnet(9): split ifc_alloc_unit() (should make code a bit cleaner).ClosedPublicActions