Re: [PATCH net-next] neigh: reduce arp latency
flat view
From: Julian Anastasov <ja@ssi.bg>
Date: 2011-08-09 17:01:33
Hello, On Tue, 9 Aug 2011, Eric Dumazet wrote:
quoted hunk ↗ jump to hunk
Remove the artificial HZ latency on arp resolution. Instead of firing a timer in one jiffy (up to 10 ms if HZ=100), lets send the ARP message immediately.@@ -957,7 +964,8 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb) atomic_set(&neigh->probes, neigh->parms->ucast_probes); neigh->nud_state = NUD_INCOMPLETE; neigh->updated = jiffies; - neigh_add_timer(neigh, now + 1); + neigh_add_timer(neigh, now + HZ);
To be correct with old NUD_INCOMPLETE logic may be we can use max(neigh->parms->retrans_time, HZ/2) here instead of HZ?
quoted hunk ↗ jump to hunk
+ immediate_probe = true; } else { neigh->nud_state = NUD_FAILED; neigh->updated = jiffies;
Regards -- Julian Anastasov [off-list ref]