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allow the destination of m_move_pkthdr to have external

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storage (e.g. a cluster)

Glanced at by:	rwatson, silby
This commit is contained in:
Sam Leffler 2005-03-08 17:52:01 +00:00
parent 18e6466b0f
commit a4e714295a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=143302
1 changed files with 3 additions and 3 deletions
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6
sys/kern/uipc_mbuf.c
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@ -284,7 +284,6 @@ m_move_pkthdr(struct mbuf *to, struct mbuf *from)
KASSERT(SLIST_EMPTY(&to->m_pkthdr.tags),
("m_move_pkthdr: to has tags"));
#endif
KASSERT((to->m_flags & M_EXT) == 0, ("m_move_pkthdr: to has cluster"));
#ifdef MAC
/*
* XXXMAC: It could be this should also occur for non-MAC?
@ -292,8 +291,9 @@ m_move_pkthdr(struct mbuf *to, struct mbuf *from)
if (to->m_flags & M_PKTHDR)
m_tag_delete_chain(to, NULL);
#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; /* especially tags */
SLIST_INIT(&from->m_pkthdr.tags); /* purge tags from src */
from->m_flags &= ~M_PKTHDR;