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Assert that the mbuf is not shared to ensure problems like the last commit are

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not reintroduced.
This commit is contained in:
Andrew Thompson 2006-03-26 20:52:47 +00:00
parent 0f5650dbf9
commit 64cb85059e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=157155
1 changed files with 3 additions and 0 deletions
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3
sys/net/if_bridge.c
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@ -2589,6 +2589,9 @@ bridge_pfil(struct mbuf **mp, struct ifnet *bifp, struct ifnet *ifp, int dir)
snap = 0;
error = -1; /* Default error if not error == 0 */
/* we may return with the IP fields swapped, ensure its not shared */
KASSERT(M_WRITABLE(*mp), ("%s: modifying a shared mbuf", __func__));
if (pfil_bridge == 0 && pfil_member == 0 && pfil_ipfw == 0)
return 0; /* filtering is disabled */