git: 344f1083e128 - main - ipfilter: Use the softn (NAT softc) host map size in ip_nat6 calculation.

[Cy Schubert]

The branch main has been updated by cy:

URL: https://cgit.FreeBSD.org/src/commit/?id=344f1083e128d8d41ca31853dac513ca3efd9d1f

commit 344f1083e128d8d41ca31853dac513ca3efd9d1f
Author:     Cy Schubert <cy at FreeBSD.org>
AuthorDate: 2021-02-05 14:26:04 +0000
Commit:     Cy Schubert <cy at FreeBSD.org>
CommitDate: 2021-02-06 02:39:38 +0000

    ipfilter: Use the softn (NAT softc) host map size in ip_nat6 calculation.
    
    The ipfilter NAT table host map size is a tunable that defaults to
    a macro value defined at build time. HOSTMAP_SIZE is saved in softn
    (the ipnat softc) at initialization. It can be tuned (changed) at runtime
    using the ipf -T command. If the hostmap_size tunable is adjusted the
    calculation to determine where to put new entries in the table was
    incorrect. Use the tunable in the NAT softc instead of the static build
    time value.
    
    MFC after:      1 week
---
 sys/contrib/ipfilter/netinet/ip_nat6.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/contrib/ipfilter/netinet/ip_nat6.c b/sys/contrib/ipfilter/netinet/ip_nat6.c
index b2713aec812a..13fa6fb6bc30 100644
--- a/sys/contrib/ipfilter/netinet/ip_nat6.c
+++ b/sys/contrib/ipfilter/netinet/ip_nat6.c
@@ -390,7 +390,7 @@ ipf_nat6_hostmap(softn, np, src, dst, map, port)
 	hv += dst->i6[2];
 	hv += dst->i6[1];
 	hv += dst->i6[0];
-	hv %= HOSTMAP_SIZE;
+	hv %= softn->ipf_nat_hostmap_sz;
 	for (hm = softn->ipf_hm_maptable[hv]; hm; hm = hm->hm_next)
 		if (IP6_EQ(&hm->hm_osrc6, src) &&
 		    IP6_EQ(&hm->hm_odst6, dst) &&