tools/testing/selftests/bpf/prog_tests/sockmap_ktls.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2020 Cloudflare
   3 /*
   4  * Tests for sockmap/sockhash holding kTLS sockets.
   5  */
   6
   7 #include "test_progs.h"
   8
   9 #define MAX_TEST_NAME 80
  10 #define TCP_ULP 31
  11
  12 static int tcp_server(int family)
  13 {
  14         int err, s;
  15
  16         s = socket(family, SOCK_STREAM, 0);
  17         if (CHECK_FAIL(s == -1)) {
  18                 perror("socket");
  19                 return -1;
  20         }
  21
  22         err = listen(s, SOMAXCONN);
  23         if (CHECK_FAIL(err)) {
  24                 perror("listen");
  25                 return -1;
  26         }
  27
  28         return s;
  29 }
  30
  31 static int disconnect(int fd)
  32 {
  33         struct sockaddr unspec = { AF_UNSPEC };
  34
  35         return connect(fd, &unspec, sizeof(unspec));
  36 }
  37
  38 /* Disconnect (unhash) a kTLS socket after removing it from sockmap. */
  39 static void test_sockmap_ktls_disconnect_after_delete(int family, int map)
  40 {
  41         struct sockaddr_storage addr = {0};
  42         socklen_t len = sizeof(addr);
  43         int err, cli, srv, zero = 0;
  44
  45         srv = tcp_server(family);
  46         if (srv == -1)
  47                 return;
  48
  49         err = getsockname(srv, (struct sockaddr *)&addr, &len);
  50         if (CHECK_FAIL(err)) {
  51                 perror("getsockopt");
  52                 goto close_srv;
  53         }
  54
  55         cli = socket(family, SOCK_STREAM, 0);
  56         if (CHECK_FAIL(cli == -1)) {
  57                 perror("socket");
  58                 goto close_srv;
  59         }
  60
  61         err = connect(cli, (struct sockaddr *)&addr, len);
  62         if (CHECK_FAIL(err)) {
  63                 perror("connect");
  64                 goto close_cli;
  65         }
  66
  67         err = bpf_map_update_elem(map, &zero, &cli, 0);
  68         if (CHECK_FAIL(err)) {
  69                 perror("bpf_map_update_elem");
  70                 goto close_cli;
  71         }
  72
  73         err = setsockopt(cli, IPPROTO_TCP, TCP_ULP, "tls", strlen("tls"));
  74         if (CHECK_FAIL(err)) {
  75                 perror("setsockopt(TCP_ULP)");
  76                 goto close_cli;
  77         }
  78
  79         err = bpf_map_delete_elem(map, &zero);
  80         if (CHECK_FAIL(err)) {
  81                 perror("bpf_map_delete_elem");
  82                 goto close_cli;
  83         }
  84
  85         err = disconnect(cli);
  86         if (CHECK_FAIL(err))
  87                 perror("disconnect");
  88
  89 close_cli:
  90         close(cli);
  91 close_srv:
  92         close(srv);
  93 }
  94
  95 static void run_tests(int family, enum bpf_map_type map_type)
  96 {
  97         char test_name[MAX_TEST_NAME];
  98         int map;
  99
 100         map = bpf_map_create(map_type, NULL, sizeof(int), sizeof(int), 1, NULL);
 101         if (CHECK_FAIL(map < 0)) {
 102                 perror("bpf_map_create");
 103                 return;
 104         }
 105
 106         snprintf(test_name, MAX_TEST_NAME,
 107                  "sockmap_ktls disconnect_after_delete %s %s",
 108                  family == AF_INET ? "IPv4" : "IPv6",
 109                  map_type == BPF_MAP_TYPE_SOCKMAP ? "SOCKMAP" : "SOCKHASH");
 110         if (!test__start_subtest(test_name))
 111                 return;
 112
 113         test_sockmap_ktls_disconnect_after_delete(family, map);
 114
 115         close(map);
 116 }
 117
 118 void test_sockmap_ktls(void)
 119 {
 120         run_tests(AF_INET, BPF_MAP_TYPE_SOCKMAP);
 121         run_tests(AF_INET, BPF_MAP_TYPE_SOCKHASH);
 122         run_tests(AF_INET6, BPF_MAP_TYPE_SOCKMAP);
 123         run_tests(AF_INET6, BPF_MAP_TYPE_SOCKHASH);
 124 }