126 lines
2.9 KiB
C
126 lines
2.9 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) Meta Platforms, Inc. and affiliates. */
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#define _GNU_SOURCE
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#include <sched.h>
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#include <linux/socket.h>
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#include <net/if.h>
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#include "test_progs.h"
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#include "cgroup_helpers.h"
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#include "network_helpers.h"
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#include "setget_sockopt.skel.h"
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#define CG_NAME "/setget-sockopt-test"
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static const char addr4_str[] = "127.0.0.1";
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static const char addr6_str[] = "::1";
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static struct setget_sockopt *skel;
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static int cg_fd;
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static int create_netns(void)
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{
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if (!ASSERT_OK(unshare(CLONE_NEWNET), "create netns"))
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return -1;
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if (!ASSERT_OK(system("ip link set dev lo up"), "set lo up"))
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return -1;
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if (!ASSERT_OK(system("ip link add dev binddevtest1 type veth peer name binddevtest2"),
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"add veth"))
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return -1;
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if (!ASSERT_OK(system("ip link set dev binddevtest1 up"),
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"bring veth up"))
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return -1;
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return 0;
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}
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static void test_tcp(int family)
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{
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struct setget_sockopt__bss *bss = skel->bss;
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int sfd, cfd;
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memset(bss, 0, sizeof(*bss));
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sfd = start_server(family, SOCK_STREAM,
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family == AF_INET6 ? addr6_str : addr4_str, 0, 0);
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if (!ASSERT_GE(sfd, 0, "start_server"))
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return;
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cfd = connect_to_fd(sfd, 0);
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if (!ASSERT_GE(cfd, 0, "connect_to_fd_server")) {
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close(sfd);
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return;
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}
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close(sfd);
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close(cfd);
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ASSERT_EQ(bss->nr_listen, 1, "nr_listen");
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ASSERT_EQ(bss->nr_connect, 1, "nr_connect");
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ASSERT_EQ(bss->nr_active, 1, "nr_active");
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ASSERT_EQ(bss->nr_passive, 1, "nr_passive");
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ASSERT_EQ(bss->nr_socket_post_create, 2, "nr_socket_post_create");
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ASSERT_EQ(bss->nr_binddev, 2, "nr_bind");
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}
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static void test_udp(int family)
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{
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struct setget_sockopt__bss *bss = skel->bss;
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int sfd;
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memset(bss, 0, sizeof(*bss));
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sfd = start_server(family, SOCK_DGRAM,
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family == AF_INET6 ? addr6_str : addr4_str, 0, 0);
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if (!ASSERT_GE(sfd, 0, "start_server"))
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return;
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close(sfd);
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ASSERT_GE(bss->nr_socket_post_create, 1, "nr_socket_post_create");
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ASSERT_EQ(bss->nr_binddev, 1, "nr_bind");
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}
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void test_setget_sockopt(void)
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{
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cg_fd = test__join_cgroup(CG_NAME);
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if (cg_fd < 0)
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return;
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if (create_netns())
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goto done;
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skel = setget_sockopt__open();
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if (!ASSERT_OK_PTR(skel, "open skel"))
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goto done;
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strcpy(skel->rodata->veth, "binddevtest1");
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skel->rodata->veth_ifindex = if_nametoindex("binddevtest1");
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if (!ASSERT_GT(skel->rodata->veth_ifindex, 0, "if_nametoindex"))
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goto done;
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if (!ASSERT_OK(setget_sockopt__load(skel), "load skel"))
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goto done;
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skel->links.skops_sockopt =
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bpf_program__attach_cgroup(skel->progs.skops_sockopt, cg_fd);
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if (!ASSERT_OK_PTR(skel->links.skops_sockopt, "attach cgroup"))
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goto done;
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skel->links.socket_post_create =
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bpf_program__attach_cgroup(skel->progs.socket_post_create, cg_fd);
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if (!ASSERT_OK_PTR(skel->links.socket_post_create, "attach_cgroup"))
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goto done;
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test_tcp(AF_INET6);
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test_tcp(AF_INET);
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test_udp(AF_INET6);
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test_udp(AF_INET);
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done:
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setget_sockopt__destroy(skel);
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close(cg_fd);
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}
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