94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) 2020 Facebook, Inc.
|
|
*
|
|
* 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/version.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <string>
|
|
|
|
#include "BPF.h"
|
|
#include "catch.hpp"
|
|
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 2, 0)
|
|
|
|
TEST_CASE("test sk_storage map", "[sk_storage][!mayfail]") {
|
|
{
|
|
const std::string BPF_PROGRAM = R"(
|
|
BPF_SK_STORAGE(sk_pkt_cnt, __u64);
|
|
|
|
int test(struct __sk_buff *skb) {
|
|
__u64 cnt = 0, *cnt_out;
|
|
struct bpf_sock *sk;
|
|
|
|
sk = skb->sk;
|
|
if (!sk)
|
|
return 1;
|
|
|
|
sk = bpf_sk_fullsock(sk);
|
|
if (!sk)
|
|
return 1;
|
|
|
|
cnt_out = sk_pkt_cnt.sk_storage_get(sk, &cnt, BPF_SK_STORAGE_GET_F_CREATE);
|
|
if (!cnt_out)
|
|
return 1;
|
|
|
|
(*cnt_out)++;
|
|
return 1;
|
|
}
|
|
)";
|
|
|
|
// make sure program is loaded successfully
|
|
ebpf::BPF bpf;
|
|
ebpf::StatusTuple res(0);
|
|
res = bpf.init(BPF_PROGRAM);
|
|
REQUIRE(res.ok());
|
|
int prog_fd;
|
|
res = bpf.load_func("test", BPF_PROG_TYPE_CGROUP_SKB, prog_fd);
|
|
REQUIRE(res.ok());
|
|
|
|
// create a udp socket so we can do some map operations.
|
|
int sockfd = socket(AF_INET, SOCK_DGRAM, 0);
|
|
REQUIRE(sockfd >= 0);
|
|
|
|
auto sk_table = bpf.get_sk_storage_table<unsigned long long>("sk_pkt_cnt");
|
|
unsigned long long v = 0, v1 = 10;
|
|
|
|
// no sk_storage for the table yet.
|
|
res = sk_table.get_value(sockfd, v);
|
|
REQUIRE(!res.ok());
|
|
|
|
// nothing to remove yet.
|
|
res = sk_table.remove_value(sockfd);
|
|
REQUIRE(!res.ok());
|
|
|
|
// update the table with a certain value.
|
|
res = sk_table.update_value(sockfd, v1);
|
|
REQUIRE(res.ok());
|
|
|
|
// get_value should be successful now.
|
|
res = sk_table.get_value(sockfd, v);
|
|
REQUIRE(res.ok());
|
|
REQUIRE(v == 10);
|
|
|
|
// remove the sk_storage.
|
|
res = sk_table.remove_value(sockfd);
|
|
REQUIRE(res.ok());
|
|
}
|
|
}
|
|
|
|
#endif
|