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Be more careful to only index valid IP protocols and be more verbose with

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comments.
This commit is contained in:
Andre Oppermann 2004-10-19 14:26:44 +00:00
parent dc6b9c2d6e
commit f45cd79a03
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=136689
1 changed files with 11 additions and 2 deletions
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13
sys/netinet6/ip6_input.c
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@ -169,13 +169,22 @@ ip6_init()
pr = (struct ip6protosw *)pffindproto(PF_INET6, IPPROTO_RAW, SOCK_RAW);
if (pr == 0)
panic("ip6_init");
/* Initialize the entire ip_protox[] array to IPPROTO_RAW. */
for (i = 0; i < IPPROTO_MAX; i++)
ip6_protox[i] = pr - inet6sw;
/*
* Cycle through IP protocols and put them into the appropriate place
* in ip6_protox[].
*/
for (pr = (struct ip6protosw *)inet6domain.dom_protosw;
pr < (struct ip6protosw *)inet6domain.dom_protoswNPROTOSW; pr++)
if (pr->pr_domain->dom_family == PF_INET6 &&
pr->pr_protocol && pr->pr_protocol != IPPROTO_RAW)
ip6_protox[pr->pr_protocol] = pr - inet6sw;
pr->pr_protocol && pr->pr_protocol != IPPROTO_RAW) {
/* Be careful to only index valid IP protocols. */
if (pr->pr_protocol <= IPPROTO_MAX)
ip6_protox[pr->pr_protocol] = pr - inet6sw;
}
/* Initialize packet filter hooks. */
inet6_pfil_hook.ph_type = PFIL_TYPE_AF;