blob: a32e74a82534e42695602d40e1fcc9d97896a52e [file] [log] [blame]
// Copyright 2021 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#include "pw_router/static_router.h"
#include <algorithm>
#include <mutex>
namespace pw::router {
Status StaticRouter::RoutePacket(ConstByteSpan packet) {
uint32_t address;
{
// Only packet parsing is synchronized within the router; egresses must be
// synchronized externally.
std::lock_guard lock(mutex_);
if (!parser_.Parse(packet)) {
parser_errors_.Increment();
return Status::DataLoss();
}
std::optional<uint32_t> result = parser_.GetDestinationAddress();
if (!result.has_value()) {
parser_errors_.Increment();
return Status::DataLoss();
}
address = result.value();
}
auto route = std::find_if(routes_.begin(), routes_.end(), [&](auto r) {
return r.address == address;
});
if (route == routes_.end()) {
route_errors_.Increment();
return Status::NotFound();
}
if (Status status = route->egress.SendPacket(packet); !status.ok()) {
egress_errors_.Increment();
return Status::Unavailable();
}
return OkStatus();
}
} // namespace pw::router