bpf_progs/offload.c

/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * 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
 *
 *      http://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 <linux/if.h>
#include <linux/pkt_cls.h>

#include "bpf_helpers.h"
#include "netdbpf/bpf_shared.h"

DEFINE_BPF_MAP_GRW(tether_ingress_map, HASH, TetherIngressKey, TetherIngressValue, 64,
                   AID_NETWORK_STACK)

// Tethering stats, indexed by upstream interface.
DEFINE_BPF_MAP_GRW(tether_stats_map, HASH, uint32_t, TetherStatsValue, 16, AID_NETWORK_STACK)

SEC("schedcls/ingress/tether_ether")
int sched_cls_ingress_tether_ether(struct __sk_buff* skb) {
    // TODO
    return TC_ACT_OK;
}

SEC("schedcls/ingress/tether_rawip")
int sched_cls_ingress_tether_rawip(struct __sk_buff* skb) {
    // TODO
    return TC_ACT_OK;
}

char _license[] SEC("license") = "Apache 2.0";