cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

socket_cookie.c (2217B)

      1// SPDX-License-Identifier: GPL-2.0
      2// Copyright (c) 2020 Google LLC.
      3// Copyright (c) 2018 Facebook
      4
      5#include <test_progs.h>
      6#include "socket_cookie_prog.skel.h"
      7#include "network_helpers.h"
      8
      9static int duration;
     10
     11struct socket_cookie {
     12	__u64 cookie_key;
     13	__u32 cookie_value;
     14};
     15
     16void test_socket_cookie(void)
     17{
     18	int server_fd = 0, client_fd = 0, cgroup_fd = 0, err = 0;
     19	socklen_t addr_len = sizeof(struct sockaddr_in6);
     20	struct socket_cookie_prog *skel;
     21	__u32 cookie_expected_value;
     22	struct sockaddr_in6 addr;
     23	struct socket_cookie val;
     24
     25	skel = socket_cookie_prog__open_and_load();
     26	if (!ASSERT_OK_PTR(skel, "skel_open"))
     27		return;
     28
     29	cgroup_fd = test__join_cgroup("/socket_cookie");
     30	if (CHECK(cgroup_fd < 0, "join_cgroup", "cgroup creation failed\n"))
     31		goto out;
     32
     33	skel->links.set_cookie = bpf_program__attach_cgroup(
     34		skel->progs.set_cookie, cgroup_fd);
     35	if (!ASSERT_OK_PTR(skel->links.set_cookie, "prog_attach"))
     36		goto close_cgroup_fd;
     37
     38	skel->links.update_cookie_sockops = bpf_program__attach_cgroup(
     39		skel->progs.update_cookie_sockops, cgroup_fd);
     40	if (!ASSERT_OK_PTR(skel->links.update_cookie_sockops, "prog_attach"))
     41		goto close_cgroup_fd;
     42
     43	skel->links.update_cookie_tracing = bpf_program__attach(
     44		skel->progs.update_cookie_tracing);
     45	if (!ASSERT_OK_PTR(skel->links.update_cookie_tracing, "prog_attach"))
     46		goto close_cgroup_fd;
     47
     48	server_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);
     49	if (CHECK(server_fd < 0, "start_server", "errno %d\n", errno))
     50		goto close_cgroup_fd;
     51
     52	client_fd = connect_to_fd(server_fd, 0);
     53	if (CHECK(client_fd < 0, "connect_to_fd", "errno %d\n", errno))
     54		goto close_server_fd;
     55
     56	err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.socket_cookies),
     57				  &client_fd, &val);
     58	if (!ASSERT_OK(err, "map_lookup(socket_cookies)"))
     59		goto close_client_fd;
     60
     61	err = getsockname(client_fd, (struct sockaddr *)&addr, &addr_len);
     62	if (!ASSERT_OK(err, "getsockname"))
     63		goto close_client_fd;
     64
     65	cookie_expected_value = (ntohs(addr.sin6_port) << 8) | 0xFF;
     66	ASSERT_EQ(val.cookie_value, cookie_expected_value, "cookie_value");
     67
     68close_client_fd:
     69	close(client_fd);
     70close_server_fd:
     71	close(server_fd);
     72close_cgroup_fd:
     73	close(cgroup_fd);
     74out:
     75	socket_cookie_prog__destroy(skel);
     76}