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tcp: avoid bcopy() in tcp_mss_update()
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This commit is contained in:
Gleb Smirnoff 2024-11-20 16:35:59 -08:00
parent 2944a888ea
commit 3789810845
1 changed files with 5 additions and 8 deletions
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13
sys/netinet/tcp_input.c
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@ -3877,19 +3877,16 @@ tcp_mss_update(struct tcpcb *tp, int offer, int mtuoffer,
offer = max(offer, V_tcp_minmss);
}
/*
* rmx information is now retrieved from tcp_hostcache.
*/
tcp_hc_get(&inp->inp_inc, &metrics);
if (metricptr != NULL)
bcopy(&metrics, metricptr, sizeof(struct hc_metrics_lite));
if (metricptr == NULL)
metricptr = &metrics;
tcp_hc_get(&inp->inp_inc, metricptr);
/*
* If there's a discovered mtu in tcp hostcache, use it.
* Else, use the link mtu.
*/
if (metrics.hc_mtu)
mss = min(metrics.hc_mtu, maxmtu) - min_protoh;
if (metricptr->hc_mtu)
mss = min(metricptr->hc_mtu, maxmtu) - min_protoh;
else {
#ifdef INET6
if (isipv6) {