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Skip the pseudo-header if nxt == 0. This is already documented

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in in6_cksum(9) and is also the behavior of the i386 optimized
version.
This commit is contained in:
thorpej 2001-05-30 03:06:56 +00:00
parent 2d632efc89
commit c973d6a0eb
1 changed files with 6 additions and 1 deletions
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7
sys/netinet6/in6_cksum.c
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@ -1,4 +1,4 @@
/* $NetBSD: in6_cksum.c,v 1.10 2001/02/10 04:14:27 itojun Exp $ */
/* $NetBSD: in6_cksum.c,v 1.11 2001/05/30 03:06:56 thorpej Exp $ */
/* $KAME: in6_cksum.c,v 1.9 2000/09/09 15:33:31 itojun Exp $ */
/*
@ -127,6 +127,10 @@ in6_cksum(m, nxt, off, len)
m->m_pkthdr.len, off, len);
}
/* Skip pseudo-header if nxt == 0. */
if (nxt == 0)
goto skip_phdr;
bzero(&uph, sizeof(uph));
/*
@ -169,6 +173,7 @@ in6_cksum(m, nxt, off, len)
if (dstifid)
ip6->ip6_dst.s6_addr16[1] = dstifid;
#endif
skip_phdr:
/*
* Secondly calculate a summary of the first mbuf excluding offset.
*/