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firmware: Use larger ARP cache 

This works around a problematic interaction between ARP cache
expiry in smoltcp (with its 3 seconds timeout before a discovery
request is sent) and our TCP keepalive settings, where the timeout
is reached before the keepalive had a chance to be sent.

GitHub: Closes #1150.
This commit is contained in:
David Nadlinger 2018-09-14 17:01:00 +01:00 committed by whitequark
parent 7565d816e4
commit b482f5feae
1 changed files with 1 additions and 2 deletions
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3
artiq/firmware/runtime/main.rs
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@ -270,9 +270,8 @@ fn startup_ethernet() {
smoltcp::phy::EthernetTracer::new(net_device, net_trace_fn) smoltcp::phy::EthernetTracer::new(net_device, net_trace_fn)
}; };
let mut neighbor_map = [None; 8];
let neighbor_cache = let neighbor_cache =
smoltcp::iface::NeighborCache::new(&mut neighbor_map[..]); smoltcp::iface::NeighborCache::new(alloc::btree_map::BTreeMap::new());
let mut interface = let mut interface =
smoltcp::iface::EthernetInterfaceBuilder::new(net_device) smoltcp::iface::EthernetInterfaceBuilder::new(net_device)
.neighbor_cache(neighbor_cache) .neighbor_cache(neighbor_cache)