iflib: retire MB_DTOR_SKIP
The flag was added in 2016 but remains unused. Reviewed by: kbowling Sponsored by: Rubicon Communications, LLC ("Netgate") Differential Revision: https://reviews.freebsd.org/D30958
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@ -658,7 +658,8 @@ mb_dtor_mbuf(void *mem, int size, void *arg)
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flags = (unsigned long)arg;
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KASSERT((m->m_flags & M_NOFREE) == 0, ("%s: M_NOFREE set", __func__));
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if (!(flags & MB_DTOR_SKIP) && (m->m_flags & M_PKTHDR) && !SLIST_EMPTY(&m->m_pkthdr.tags))
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KASSERT((flags & 0x1) == 0, ("%s: obsolete MB_DTOR_SKIP passed", __func__));
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if ((m->m_flags & M_PKTHDR) && !SLIST_EMPTY(&m->m_pkthdr.tags))
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m_tag_delete_chain(m, NULL);
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}
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@ -478,8 +478,6 @@ m_epg_pagelen(const struct mbuf *m, int pidx, int pgoff)
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#define M_PROTO10 0x00400000 /* protocol-specific */
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#define M_PROTO11 0x00800000 /* protocol-specific */
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#define MB_DTOR_SKIP 0x1 /* don't pollute the cache by touching a freed mbuf */
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/*
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* Flags to purge when crossing layers.
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*/
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