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Allow m_dup_pkthdr to accept mbufs with attached clusters as

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targets.

Submitted by:	bmilekic
This commit is contained in:
Mike Silbersack 2003-03-28 05:57:48 +00:00
parent 6205bf3107
commit df8c7fc96e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=112733
1 changed files with 3 additions and 3 deletions
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6
sys/kern/uipc_mbuf.c
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@ -116,13 +116,13 @@ m_dup_pkthdr(struct mbuf *to, struct mbuf *from, int how)
KASSERT(to->m_flags & M_PKTHDR, ("m_dup_pkthdr: called on non-header"));
KASSERT(SLIST_EMPTY(&to->m_pkthdr.tags), ("m_dup_pkthdr: to has tags"));
#endif
KASSERT((to->m_flags & M_EXT) == 0, ("m_dup_pkthdr: to has cluster"));
#ifdef MAC
if (to->m_flags & M_PKTHDR)
mac_destroy_mbuf(to);
#endif
to->m_flags = from->m_flags & M_COPYFLAGS;
to->m_data = to->m_pktdat;
to->m_flags = (from->m_flags & M_COPYFLAGS) | (to->m_flags & M_EXT);
if ((to->m_flags & M_EXT) == 0)
to->m_data = to->m_pktdat;
to->m_pkthdr = from->m_pkthdr;
#ifdef MAC
mac_init_mbuf(to, 1); /* XXXMAC no way to fail */