[PATCH 12/12] selftests/net: Add TCP-AO key-management test

Dmitry Safonov
2023-12-15T02:37:41Z

Check multiple keys on a socket:
- rotation on closed socket
- current/rnext operations shouldn't be possible on listen sockets
- current/rnext key set should be the one, that's used on connect()
- key rotations with pseudo-random generated keys
- copying matching keys on connect() and on accept()

At this moment there are 3 tests that are "expected" to fail: a kernel
fix is needed to improve the situation, they are marked XFAIL.

Sample output:
> # ./key-management_ipv4
> 1..120
> # 1601[lib/setup.c:239] rand seed 1700526653
> TAP version 13
> ok 1 closed socket, delete a key: the key was deleted
> ok 2 closed socket, delete all keys: the key was deleted
> ok 3 closed socket, delete current key: key deletion was prevented
> ok 4 closed socket, delete rnext key: key deletion was prevented
> ok 5 closed socket, delete a key + set current/rnext: the key was deleted
> ok 6 closed socket, force-delete current key: the key was deleted
> ok 7 closed socket, force-delete rnext key: the key was deleted
> ok 8 closed socket, delete current+rnext key: key deletion was prevented
> ok 9 closed socket, add + change current key
> ok 10 closed socket, add + change rnext key
> ok 11 listen socket, delete a key: the key was deleted
> ok 12 listen socket, delete all keys: the key was deleted
> ok 13 listen socket, setting current key not allowed
> ok 14 listen socket, setting rnext key not allowed
> ok 15 # XFAIL listen() after current/rnext keys set: the socket has current/rnext keys: 100:200
> ok 16 # XFAIL listen socket, delete current key from before listen(): failed to delete the key 100:100 -16
> ok 17 # XFAIL listen socket, delete rnext key from before listen(): failed to delete the key 200:200 -16
> ok 18 listen socket, getsockopt(TCP_AO_REPAIR) is restricted
> ok 19 listen socket, setsockopt(TCP_AO_REPAIR) is restricted
> ok 20 listen socket, delete a key + set current/rnext: key deletion was prevented
> ok 21 listen socket, force-delete current key: key deletion was prevented
> ok 22 listen socket, force-delete rnext key: key deletion was prevented
> ok 23 listen socket, delete a key: the key was deleted
> ok 24 listen socket, add + change current key
> ok 25 listen socket, add + change rnext key
> ok 26 server: Check current/rnext keys unset before connect(): The socket keys are consistent with the expectations
> ok 27 client: Check current/rnext keys unset before connect(): current key 19 as expected
> ok 28 client: Check current/rnext keys unset before connect(): rnext key 146 as expected
> ok 29 server: Check current/rnext keys unset before connect(): server alive
> ok 30 server: Check current/rnext keys unset before connect(): passed counters checks
> ok 31 client: Check current/rnext keys unset before connect(): The socket keys are consistent with the expectations
> ok 32 server: Check current/rnext keys unset before connect(): The socket keys are consistent with the expectations
> ok 33 server: Check current/rnext keys unset before connect(): passed counters checks
> ok 34 client: Check current/rnext keys unset before connect(): passed counters checks
> ok 35 server: Check current/rnext keys set before connect(): The socket keys are consistent with the expectations
> ok 36 server: Check current/rnext keys set before connect(): server alive
> ok 37 server: Check current/rnext keys set before connect(): passed counters checks
> ok 38 client: Check current/rnext keys set before connect(): current key 10 as expected
> ok 39 client: Check current/rnext keys set before connect(): rnext key 137 as expected
> ok 40 server: Check current/rnext keys set before connect(): The socket keys are consistent with the expectations
> ok 41 client: Check current/rnext keys set before connect(): The socket keys are consistent with the expectations
> ok 42 client: Check current/rnext keys set before connect(): passed counters checks
> ok 43 server: Check current/rnext keys set before connect(): passed counters checks
> ok 44 server: Check current != rnext keys set before connect(): The socket keys are consistent with the expectations
> ok 45 server: Check current != rnext keys set before connect(): server alive
> ok 46 server: Check current != rnext keys set before connect(): passed counters checks
> ok 47 client: Check current != rnext keys set before connect(): current key 10 as expected
> ok 48 client: Check current != rnext keys set before connect(): rnext key 132 as expected
> ok 49 server: Check current != rnext keys set before connect(): The socket keys are consistent with the expectations
> ok 50 client: Check current != rnext keys set before connect(): The socket keys are consistent with the expectations
> ok 51 client: Check current != rnext keys set before connect(): passed counters checks
> ok 52 server: Check current != rnext keys set before connect(): passed counters checks
> ok 53 server: Check current flapping back on peer's RnextKey request: The socket keys are consistent with the expectations
> ok 54 server: Check current flapping back on peer's RnextKey request: server alive
> ok 55 server: Check current flapping back on peer's RnextKey request: passed counters checks
> ok 56 client: Check current flapping back on peer's RnextKey request: current key 10 as expected
> ok 57 client: Check current flapping back on peer's RnextKey request: rnext key 132 as expected
> ok 58 server: Check current flapping back on peer's RnextKey request: The socket keys are consistent with the expectations
> ok 59 client: Check current flapping back on peer's RnextKey request: The socket keys are consistent with the expectations
> ok 60 server: Check current flapping back on peer's RnextKey request: passed counters checks
> ok 61 client: Check current flapping back on peer's RnextKey request: passed counters checks
> ok 62 server: Rotate over all different keys: The socket keys are consistent with the expectations
> ok 63 server: Rotate over all different keys: server alive
> ok 64 server: Rotate over all different keys: passed counters checks
> ok 65 server: Rotate over all different keys: current key 128 as expected
> ok 66 client: Rotate over all different keys: rnext key 128 as expected
> ok 67 server: Rotate over all different keys: current key 129 as expected
> ok 68 client: Rotate over all different keys: rnext key 129 as expected
> ok 69 server: Rotate over all different keys: current key 130 as expected
> ok 70 client: Rotate over all different keys: rnext key 130 as expected
> ok 71 server: Rotate over all different keys: current key 131 as expected
> ok 72 client: Rotate over all different keys: rnext key 131 as expected
> ok 73 server: Rotate over all different keys: current key 132 as expected
> ok 74 client: Rotate over all different keys: rnext key 132 as expected
> ok 75 server: Rotate over all different keys: current key 133 as expected
> ok 76 client: Rotate over all different keys: rnext key 133 as expected
> ok 77 server: Rotate over all different keys: current key 134 as expected
> ok 78 client: Rotate over all different keys: rnext key 134 as expected
> ok 79 server: Rotate over all different keys: current key 135 as expected
> ok 80 client: Rotate over all different keys: rnext key 135 as expected
> ok 81 server: Rotate over all different keys: current key 136 as expected
> ok 82 client: Rotate over all different keys: rnext key 136 as expected
> ok 83 server: Rotate over all different keys: current key 137 as expected
> ok 84 client: Rotate over all different keys: rnext key 137 as expected
> ok 85 server: Rotate over all different keys: current key 138 as expected
> ok 86 client: Rotate over all different keys: rnext key 138 as expected
> ok 87 server: Rotate over all different keys: current key 139 as expected
> ok 88 client: Rotate over all different keys: rnext key 139 as expected
> ok 89 server: Rotate over all different keys: current key 140 as expected
> ok 90 client: Rotate over all different keys: rnext key 140 as expected
> ok 91 server: Rotate over all different keys: current key 141 as expected
> ok 92 client: Rotate over all different keys: rnext key 141 as expected
> ok 93 server: Rotate over all different keys: current key 142 as expected
> ok 94 client: Rotate over all different keys: rnext key 142 as expected
> ok 95 server: Rotate over all different keys: current key 143 as expected
> ok 96 client: Rotate over all different keys: rnext key 143 as expected
> ok 97 server: Rotate over all different keys: current key 144 as expected
> ok 98 client: Rotate over all different keys: rnext key 144 as expected
> ok 99 server: Rotate over all different keys: current key 145 as expected
> ok 100 client: Rotate over all different keys: rnext key 145 as expected
> ok 101 server: Rotate over all different keys: current key 146 as expected
> ok 102 client: Rotate over all different keys: rnext key 146 as expected
> ok 103 server: Rotate over all different keys: current key 127 as expected
> ok 104 client: Rotate over all different keys: rnext key 127 as expected
> ok 105 client: Rotate over all different keys: current key 0 as expected
> ok 106 client: Rotate over all different keys: rnext key 127 as expected
> ok 107 server: Rotate over all different keys: The socket keys are consistent with the expectations
> ok 108 client: Rotate over all different keys: The socket keys are consistent with the expectations
> ok 109 client: Rotate over all different keys: passed counters checks
> ok 110 server: Rotate over all different keys: passed counters checks
> ok 111 server: Check accept() => established key matching: The socket keys are consistent with the expectations
> ok 112 Can't add a key with non-matching ip-address for established sk
> ok 113 Can't add a key with non-matching VRF for established sk
> ok 114 server: Check accept() => established key matching: server alive
> ok 115 server: Check accept() => established key matching: passed counters checks
> ok 116 client: Check connect() => established key matching: current key 0 as expected
> ok 117 client: Check connect() => established key matching: rnext key 128 as expected
> ok 118 client: Check connect() => established key matching: The socket keys are consistent with the expectations
> ok 119 server: Check accept() => established key matching: The socket keys are consistent with the expectations
> ok 120 server: Check accept() => established key matching: passed counters checks
> # Totals: pass:120 fail:0 xfail:0 xpass:0 skip:0 error:0

Signed-off-by: Dmitry Safonov <dima@arista.com>
---
tools/testing/selftests/net/tcp_ao/Makefile | 1 +
.../testing/selftests/net/tcp_ao/key-management.c | 1180 ++++++++++++++++++++
2 files changed, 1181 insertions(+)

diff --git a/tools/testing/selftests/net/tcp_ao/Makefile b/tools/testing/selftests/net/tcp_ao/Makefile
index 9286f9b99c86..6343cfcf919b 100644
--- a/tools/testing/selftests/net/tcp_ao/Makefile
+++ b/tools/testing/selftests/net/tcp_ao/Makefile
@@ -3,6 +3,7 @@ TEST_BOTH_AF := bench-lookups
TEST_BOTH_AF += connect
TEST_BOTH_AF += connect-deny
TEST_BOTH_AF += icmps-accept icmps-discard
+TEST_BOTH_AF += key-management
TEST_BOTH_AF += restore
TEST_BOTH_AF += rst
TEST_BOTH_AF += self-connect
diff --git a/tools/testing/selftests/net/tcp_ao/key-management.c b/tools/testing/selftests/net/tcp_ao/key-management.c
new file mode 100644
index 000000000000..c48b4970ca17
--- /dev/null
+++ b/tools/testing/selftests/net/tcp_ao/key-management.c
@@ -0,0 +1,1180 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Author: Dmitry Safonov <dima@arista.com> */
+#include <inttypes.h>
+#include "../../../../include/linux/kernel.h"
+#include "aolib.h"
+
+const size_t nr_packets = 20;
+const size_t msg_len = 100;
+const size_t quota = nr_packets * msg_len;
+union tcp_addr wrong_addr;
+#define SECOND_PASSWORD "at all times sincere friends of freedom have been rare"
+#define fault(type) (inj == FAULT_ ## type)
+
+static const int test_vrf_ifindex = 200;
+static const uint8_t test_vrf_tabid = 42;
+static void setup_vrfs(void)
+{
+ int err;
+
+ if (!kernel_config_has(KCONFIG_NET_VRF))
+ return;
+
+ err = add_vrf("ksft-vrf", test_vrf_tabid, test_vrf_ifindex, -1);
+ if (err)
+ test_error("Failed to add a VRF: %d", err);
+
+ err = link_set_up("ksft-vrf");
+ if (err)
+ test_error("Failed to bring up a VRF");
+
+ err = ip_route_add_vrf(veth_name, TEST_FAMILY,
+ this_ip_addr, this_ip_dest, test_vrf_tabid);
+ if (err)
+ test_error("Failed to add a route to VRF");
+}
+
+
+static int prepare_sk(union tcp_addr *addr, uint8_t sndid, uint8_t rcvid)
+{
+ int sk = socket(test_family, SOCK_STREAM, IPPROTO_TCP);
+
+ if (sk < 0)
+ test_error("socket()");
+
+ if (test_add_key(sk, DEFAULT_TEST_PASSWORD, this_ip_dest,
+ DEFAULT_TEST_PREFIX, 100, 100))
+ test_error("test_add_key()");
+
+ if (addr && test_add_key(sk, SECOND_PASSWORD, *addr,
+ DEFAULT_TEST_PREFIX, sndid, rcvid))
+ test_error("test_add_key()");
+
+ return sk;
+}
+
+static int prepare_lsk(union tcp_addr *addr, uint8_t sndid, uint8_t rcvid)
+{
+ int sk = prepare_sk(addr, sndid, rcvid);
+
+ if (listen(sk, 10))
+ test_error("listen()");
+
+ return sk;
+}
+
+static int test_del_key(int sk, uint8_t sndid, uint8_t rcvid, bool async,
+ int current_key, int rnext_key)
+{
+ struct tcp_ao_info_opt ao_info = {};
+ struct tcp_ao_getsockopt key = {};
+ struct tcp_ao_del del = {};
+ sockaddr_af sockaddr;
+ int err;
+
+ tcp_addr_to_sockaddr_in(&del.addr, &this_ip_dest, 0);
+ del.prefix = DEFAULT_TEST_PREFIX;
+ del.sndid = sndid;
+ del.rcvid = rcvid;
+
+ if (current_key >= 0) {
+ del.set_current = 1;
+ del.current_key = (uint8_t)current_key;
+ }
+ if (rnext_key >= 0) {
+ del.set_rnext = 1;
+ del.rnext = (uint8_t)rnext_key;
+ }
+
+ err = setsockopt(sk, IPPROTO_TCP, TCP_AO_DEL_KEY, &del, sizeof(del));
+ if (err < 0)
+ return -errno;
+
+ if (async)
+ return 0;
+
+ tcp_addr_to_sockaddr_in(&sockaddr, &this_ip_dest, 0);
+ err = test_get_one_ao(sk, &key, &sockaddr, sizeof(sockaddr),
+ DEFAULT_TEST_PREFIX, sndid, rcvid);
+ if (!err)
+ return -EEXIST;
+ if (err != -E2BIG)
+ test_error("getsockopt()");
+ if (current_key < 0 && rnext_key < 0)
+ return 0;
+ if (test_get_ao_info(sk, &ao_info))
+ test_error("getsockopt(TCP_AO_INFO) failed");
+ if (current_key >= 0 && ao_info.current_key != (uint8_t)current_key)
+ return -ENOTRECOVERABLE;
+ if (rnext_key >= 0 && ao_info.rnext != (uint8_t)rnext_key)
+ return -ENOTRECOVERABLE;
+ return 0;
+}
+
+static void try_delete_key(char *tst_name, int sk, uint8_t sndid, uint8_t rcvid,
+ bool async, int current_key, int rnext_key,
+ fault_t inj)
+{
+ int err;
+
+ err = test_del_key(sk, sndid, rcvid, async, current_key, rnext_key);
+ if ((err == -EBUSY && fault(BUSY)) || (err == -EINVAL && fault(CURRNEXT))) {
+ test_ok("%s: key deletion was prevented", tst_name);
+ return;
+ }
+ if (err && fault(FIXME)) {
+ test_xfail("%s: failed to delete the key %u:%u %d",
+ tst_name, sndid, rcvid, err);
+ return;
+ }
+ if (!err) {
+ if (fault(BUSY) || fault(CURRNEXT)) {
+ test_fail("%s: the key was deleted %u:%u %d", tst_name,
+ sndid, rcvid, err);
+ } else {
+ test_ok("%s: the key was deleted", tst_name);
+ }
+ return;
+ }
+ test_fail("%s: can't delete the key %u:%u %d", tst_name, sndid, rcvid, err);
+}
+
+static int test_set_key(int sk, int current_keyid, int rnext_keyid)
+{
+ struct tcp_ao_info_opt ao_info = {};
+ int err;
+
+ if (current_keyid >= 0) {
+ ao_info.set_current = 1;
+ ao_info.current_key = (uint8_t)current_keyid;
+ }
+ if (rnext_keyid >= 0) {
+ ao_info.set_rnext = 1;
+ ao_info.rnext = (uint8_t)rnext_keyid;
+ }
+
+ err = test_set_ao_info(sk, &ao_info);
+ if (err)
+ return err;
+ if (test_get_ao_info(sk, &ao_info))
+ test_error("getsockopt(TCP_AO_INFO) failed");
+ if (current_keyid >= 0 && ao_info.current_key != (uint8_t)current_keyid)
+ return -ENOTRECOVERABLE;
+ if (rnext_keyid >= 0 && ao_info.rnext != (uint8_t)rnext_keyid)
+ return -ENOTRECOVERABLE;
+ return 0;
+}
+
+static int test_add_current_rnext_key(int sk, const char *key, uint8_t keyflags,
+ union tcp_addr in_addr, uint8_t prefix,
+ bool set_current, bool set_rnext,
+ uint8_t sndid, uint8_t rcvid)
+{
+ struct tcp_ao_add tmp = {};
+ int err;
+
+ err = test_prepare_key(&tmp, DEFAULT_TEST_ALGO, in_addr,
+ set_current, set_rnext,
+ prefix, 0, sndid, rcvid, 0, keyflags,
+ strlen(key), key);
+ if (err)
+ return err;
+
+
+ err = setsockopt(sk, IPPROTO_TCP, TCP_AO_ADD_KEY, &tmp, sizeof(tmp));
+ if (err < 0)
+ return -errno;
+
+ return test_verify_socket_key(sk, &tmp);
+}
+
+static int __try_add_current_rnext_key(int sk, const char *key, uint8_t keyflags,
+ union tcp_addr in_addr, uint8_t prefix,
+ bool set_current, bool set_rnext,
+ uint8_t sndid, uint8_t rcvid)
+{
+ struct tcp_ao_info_opt ao_info = {};
+ int err;
+
+ err = test_add_current_rnext_key(sk, key, keyflags, in_addr, prefix,
+ set_current, set_rnext, sndid, rcvid);
+ if (err)
+ return err;
+
+ if (test_get_ao_info(sk, &ao_info))
+ test_error("getsockopt(TCP_AO_INFO) failed");
+ if (set_current && ao_info.current_key != sndid)
+ return -ENOTRECOVERABLE;
+ if (set_rnext && ao_info.rnext != rcvid)
+ return -ENOTRECOVERABLE;
+ return 0;
+}
+
+static void try_add_current_rnext_key(char *tst_name, int sk, const char *key,
+ uint8_t keyflags,
+ union tcp_addr in_addr, uint8_t prefix,
+ bool set_current, bool set_rnext,
+ uint8_t sndid, uint8_t rcvid, fault_t inj)
+{
+ int err;
+
+ err = __try_add_current_rnext_key(sk, key, keyflags, in_addr, prefix,
+ set_current, set_rnext, sndid, rcvid);
+ if (!err && !fault(CURRNEXT)) {
+ test_ok("%s", tst_name);
+ return;
+ }
+ if (err == -EINVAL && fault(CURRNEXT)) {
+ test_ok("%s", tst_name);
+ return;
+ }
+ test_fail("%s", tst_name);
+}
+
+static void check_closed_socket(void)
+{
+ int sk;
+
+ sk = prepare_sk(&this_ip_dest, 200, 200);
+ try_delete_key("closed socket, delete a key", sk, 200, 200, 0, -1, -1, 0);
+ try_delete_key("closed socket, delete all keys", sk, 100, 100, 0, -1, -1, 0);
+ close(sk);
+
+ sk = prepare_sk(&this_ip_dest, 200, 200);
+ if (test_set_key(sk, 100, 200))
+ test_error("failed to set current/rnext keys");
+ try_delete_key("closed socket, delete current key", sk, 100, 100, 0, -1, -1, FAULT_BUSY);
+ try_delete_key("closed socket, delete rnext key", sk, 200, 200, 0, -1, -1, FAULT_BUSY);
+ close(sk);
+
+ sk = prepare_sk(&this_ip_dest, 200, 200);
+ if (test_add_key(sk, "Glory to heros!", this_ip_dest,
+ DEFAULT_TEST_PREFIX, 10, 11))
+ test_error("test_add_key()");
+ if (test_add_key(sk, "Glory to Ukraine!", this_ip_dest,
+ DEFAULT_TEST_PREFIX, 12, 13))
+ test_error("test_add_key()");
+ try_delete_key("closed socket, delete a key + set current/rnext", sk, 100, 100, 0, 10, 13, 0);
+ try_delete_key("closed socket, force-delete current key", sk, 10, 11, 0, 200, -1, 0);
+ try_delete_key("closed socket, force-delete rnext key", sk, 12, 13, 0, -1, 200, 0);
+ try_delete_key("closed socket, delete current+rnext key", sk, 200, 200, 0, -1, -1, FAULT_BUSY);
+ close(sk);
+
+ sk = prepare_sk(&this_ip_dest, 200, 200);
+ if (test_set_key(sk, 100, 200))
+ test_error("failed to set current/rnext keys");
+ try_add_current_rnext_key("closed socket, add + change current key",
+ sk, "Laaaa! Lalala-la-la-lalala...", 0,
+ this_ip_dest, DEFAULT_TEST_PREFIX,
+ true, false, 10, 20, 0);
+ try_add_current_rnext_key("closed socket, add + change rnext key",
+ sk, "Laaaa! Lalala-la-la-lalala...", 0,
+ this_ip_dest, DEFAULT_TEST_PREFIX,
+ false, true, 20, 10, 0);
+ close(sk);
+}
+
+static void assert_no_current_rnext(const char *tst_msg, int sk)
+{
+ struct tcp_ao_info_opt ao_info = {};
+
+ if (test_get_ao_info(sk, &ao_info))
+ test_error("getsockopt(TCP_AO_INFO) failed");
+
+ errno = 0;
+ if (ao_info.set_current || ao_info.set_rnext) {
+ test_xfail("%s: the socket has current/rnext keys: %d:%d",
+ tst_msg,
+ (ao_info.set_current) ? ao_info.current_key : -1,
+ (ao_info.set_rnext) ? ao_info.rnext : -1);
+ } else {
+ test_ok("%s: the socket has no current/rnext keys", tst_msg);
+ }
+}
+
+static void assert_no_tcp_repair(void)
+{
+ struct tcp_ao_repair ao_img = {};
+ socklen_t len = sizeof(ao_img);
+ int sk, err;
+
+ sk = prepare_sk(&this_ip_dest, 200, 200);
+ test_enable_repair(sk);
+ if (listen(sk, 10))
+ test_error("listen()");
+ errno = 0;
+ err = getsockopt(sk, SOL_TCP, TCP_AO_REPAIR, &ao_img, &len);
+ if (err && errno == EPERM)
+ test_ok("listen socket, getsockopt(TCP_AO_REPAIR) is restricted");
+ else
+ test_fail("listen socket, getsockopt(TCP_AO_REPAIR) works");
+ errno = 0;
+ err = setsockopt(sk, SOL_TCP, TCP_AO_REPAIR, &ao_img, sizeof(ao_img));
+ if (err && errno == EPERM)
+ test_ok("listen socket, setsockopt(TCP_AO_REPAIR) is restricted");
+ else
+ test_fail("listen socket, setsockopt(TCP_AO_REPAIR) works");
+ close(sk);
+}
+
+static void check_listen_socket(void)
+{
+ int sk, err;
+
+ sk = prepare_lsk(&this_ip_dest, 200, 200);
+ try_delete_key("listen socket, delete a key", sk, 200, 200, 0, -1, -1, 0);
+ try_delete_key("listen socket, delete all keys", sk, 100, 100, 0, -1, -1, 0);
+ close(sk);
+
+ sk = prepare_lsk(&this_ip_dest, 200, 200);
+ err = test_set_key(sk, 100, -1);
+ if (err == -EINVAL)
+ test_ok("listen socket, setting current key not allowed");
+ else
+ test_fail("listen socket, set current key");
+ err = test_set_key(sk, -1, 200);
+ if (err == -EINVAL)
+ test_ok("listen socket, setting rnext key not allowed");
+ else
+ test_fail("listen socket, set rnext key");
+ close(sk);
+
+ sk = prepare_sk(&this_ip_dest, 200, 200);
+ if (test_set_key(sk, 100, 200))
+ test_error("failed to set current/rnext keys");
+ if (listen(sk, 10))
+ test_error("listen()");
+ assert_no_current_rnext("listen() after current/rnext keys set", sk);
+ try_delete_key("listen socket, delete current key from before listen()", sk, 100, 100, 0, -1, -1, FAULT_FIXME);
+ try_delete_key("listen socket, delete rnext key from before listen()", sk, 200, 200, 0, -1, -1, FAULT_FIXME);
+ close(sk);
+
+ assert_no_tcp_repair();
+
+ sk = prepare_lsk(&this_ip_dest, 200, 200);
+ if (test_add_key(sk, "Glory to heros!", this_ip_dest,
+ DEFAULT_TEST_PREFIX, 10, 11))
+ test_error("test_add_key()");
+ if (test_add_key(sk, "Glory to Ukraine!", this_ip_dest,
+ DEFAULT_TEST_PREFIX, 12, 13))
+ test_error("test_add_key()");
+ try_delete_key("listen socket, delete a key + set current/rnext", sk,
+ 100, 100, 0, 10, 13, FAULT_CURRNEXT);
+ try_delete_key("listen socket, force-delete current key", sk,
+ 10, 11, 0, 200, -1, FAULT_CURRNEXT);
+ try_delete_key("listen socket, force-delete rnext key", sk,
+ 12, 13, 0, -1, 200, FAULT_CURRNEXT);
+ try_delete_key("listen socket, delete a key", sk,
+ 200, 200, 0, -1, -1, 0);
+ close(sk);
+
+ sk = prepare_lsk(&this_ip_dest, 200, 200);
+ try_add_current_rnext_key("listen socket, add + change current key",
+ sk, "Laaaa! Lalala-la-la-lalala...", 0,
+ this_ip_dest, DEFAULT_TEST_PREFIX,
+ true, false, 10, 20, FAULT_CURRNEXT);
+ try_add_current_rnext_key("listen socket, add + change rnext key",
+ sk, "Laaaa! Lalala-la-la-lalala...", 0,
+ this_ip_dest, DEFAULT_TEST_PREFIX,
+ false, true, 20, 10, FAULT_CURRNEXT);
+ close(sk);
+}
+
+static const char *fips_fpath = "/proc/sys/crypto/fips_enabled";
+static bool is_fips_enabled(void)
+{
+ static int fips_checked = -1;
+ FILE *fenabled;
+ int enabled;
+
+ if (fips_checked >= 0)
+ return !!fips_checked;
+ if (access(fips_fpath, R_OK)) {
+ if (errno != ENOENT)
+ test_error("Can't open %s", fips_fpath);
+ fips_checked = 0;
+ return false;
+ }
+ fenabled = fopen(fips_fpath, "r");
+ if (!fenabled)
+ test_error("Can't open %s", fips_fpath);
+ if (fscanf(fenabled, "%d", &enabled) != 1)
+ test_error("Can't read from %s", fips_fpath);
+ fclose(fenabled);
+ fips_checked = !!enabled;
+ return !!fips_checked;
+}
+
+struct test_key {
+ char password[TCP_AO_MAXKEYLEN];
+ const char *alg;
+ unsigned int len;
+ uint8_t client_keyid;
+ uint8_t server_keyid;
+ uint8_t maclen;
+ uint8_t matches_client : 1,
+ matches_server : 1,
+ matches_vrf : 1,
+ is_current : 1,
+ is_rnext : 1,
+ used_on_handshake : 1,
+ used_after_accept : 1,
+ used_on_client : 1;
+};
+
+struct key_collection {
+ unsigned int nr_keys;
+ struct test_key *keys;
+};
+
+static struct key_collection collection;
+
+#define TEST_MAX_MACLEN 16
+const char *test_algos[] = {
+ "cmac(aes128)",
+ "hmac(sha1)", "hmac(sha512)", "hmac(sha384)", "hmac(sha256)",
+ "hmac(sha224)", "hmac(sha3-512)",
+ /* only if !CONFIG_FIPS */
+#define TEST_NON_FIPS_ALGOS 2
+ "hmac(rmd160)", "hmac(md5)"
+};
+const unsigned int test_maclens[] = { 1, 4, 12, 16 };
+#define MACLEN_SHIFT 2
+#define ALGOS_SHIFT 4
+
+static unsigned int make_mask(unsigned int shift, unsigned int prev_shift)
+{
+ unsigned int ret = BIT(shift) - 1;
+
+ return ret << prev_shift;
+}
+
+static void init_key_in_collection(unsigned int index, bool randomized)
+{
+ struct test_key *key = &collection.keys[index];
+ unsigned int algos_nr, algos_index;
+
+ /* Same for randomized and non-randomized test flows */
+ key->client_keyid = index;
+ key->server_keyid = 127 + index;
+ key->matches_client = 1;
+ key->matches_server = 1;
+ key->matches_vrf = 1;
+ /* not really even random, but good enough for a test */
+ key->len = rand() % (TCP_AO_MAXKEYLEN - TEST_TCP_AO_MINKEYLEN);
+ key->len += TEST_TCP_AO_MINKEYLEN;
+ randomize_buffer(key->password, key->len);
+
+ if (randomized) {
+ key->maclen = (rand() % TEST_MAX_MACLEN) + 1;
+ algos_index = rand();
+ } else {
+ unsigned int shift = MACLEN_SHIFT;
+
+ key->maclen = test_maclens[index & make_mask(shift, 0)];
+ algos_index = index & make_mask(ALGOS_SHIFT, shift);
+ }
+ algos_nr = ARRAY_SIZE(test_algos);
+ if (is_fips_enabled())
+ algos_nr -= TEST_NON_FIPS_ALGOS;
+ key->alg = test_algos[algos_index % algos_nr];
+}
+
+static int init_default_key_collection(unsigned int nr_keys, bool randomized)
+{
+ size_t key_sz = sizeof(collection.keys[0]);
+
+ if (!nr_keys) {
+ free(collection.keys);
+ collection.keys = NULL;
+ return 0;
+ }
+
+ /*
+ * All keys have uniq sndid/rcvid and sndid != rcvid in order to
+ * check for any bugs/issues for different keyids, visible to both
+ * peers. Keyid == 254 is unused.
+ */
+ if (nr_keys > 127)
+ test_error("Test requires too many keys, correct the source");
+
+ collection.keys = reallocarray(collection.keys, nr_keys, key_sz);
+ if (!collection.keys)
+ return -ENOMEM;
+
+ memset(collection.keys, 0, nr_keys * key_sz);
+ collection.nr_keys = nr_keys;
+ while (nr_keys--)
+ init_key_in_collection(nr_keys, randomized);
+
+ return 0;
+}
+
+static void test_key_error(const char *msg, struct test_key *key)
+{
+ test_error("%s: key: { %s, %u:%u, %u, %u:%u:%u:%u:%u (%u)}",
+ msg, key->alg, key->client_keyid, key->server_keyid,
+ key->maclen, key->matches_client, key->matches_server,
+ key->matches_vrf, key->is_current, key->is_rnext, key->len);
+}
+
+static int test_add_key_cr(int sk, const char *pwd, unsigned int pwd_len,
+ union tcp_addr addr, uint8_t vrf,
+ uint8_t sndid, uint8_t rcvid,
+ uint8_t maclen, const char *alg,
+ bool set_current, bool set_rnext)
+{
+ struct tcp_ao_add tmp = {};
+ uint8_t keyflags = 0;
+ int err;
+
+ if (!alg)
+ alg = DEFAULT_TEST_ALGO;
+
+ if (vrf)
+ keyflags |= TCP_AO_KEYF_IFINDEX;
+ err = test_prepare_key(&tmp, alg, addr, set_current, set_rnext,
+ DEFAULT_TEST_PREFIX, vrf, sndid, rcvid, maclen,
+ keyflags, pwd_len, pwd);
+ if (err)
+ return err;
+
+ err = setsockopt(sk, IPPROTO_TCP, TCP_AO_ADD_KEY, &tmp, sizeof(tmp));
+ if (err < 0)
+ return -errno;
+
+ return test_verify_socket_key(sk, &tmp);
+}
+
+static void verify_current_rnext(const char *tst, int sk,
+ int current_keyid, int rnext_keyid)
+{
+ struct tcp_ao_info_opt ao_info = {};
+
+ if (test_get_ao_info(sk, &ao_info))
+ test_error("getsockopt(TCP_AO_INFO) failed");
+
+ errno = 0;
+ if (current_keyid >= 0) {
+ if (!ao_info.set_current)
+ test_fail("%s: the socket doesn't have current key", tst);
+ else if (ao_info.current_key != current_keyid)
+ test_fail("%s: current key is not the expected one %d != %u",
+ tst, current_keyid, ao_info.current_key);
+ else
+ test_ok("%s: current key %u as expected",
+ tst, ao_info.current_key);
+ }
+ if (rnext_keyid >= 0) {
+ if (!ao_info.set_rnext)
+ test_fail("%s: the socket doesn't have rnext key", tst);
+ else if (ao_info.rnext != rnext_keyid)
+ test_fail("%s: rnext key is not the expected one %d != %u",
+ tst, rnext_keyid, ao_info.rnext);
+ else
+ test_ok("%s: rnext key %u as expected", tst, ao_info.rnext);
+ }
+}
+
+
+static int key_collection_socket(bool server, unsigned int port)
+{
+ unsigned int i;
+ int sk;
+
+ if (server)
+ sk = test_listen_socket(this_ip_addr, port, 1);
+ else
+ sk = socket(test_family, SOCK_STREAM, IPPROTO_TCP);
+ if (sk < 0)
+ test_error("socket()");
+
+ for (i = 0; i < collection.nr_keys; i++) {
+ struct test_key *key = &collection.keys[i];
+ union tcp_addr *addr = &wrong_addr;
+ uint8_t sndid, rcvid, vrf;
+ bool set_current = false, set_rnext = false;
+
+ if (key->matches_vrf)
+ vrf = 0;
+ else
+ vrf = test_vrf_ifindex;
+ if (server) {
+ if (key->matches_client)
+ addr = &this_ip_dest;
+ sndid = key->server_keyid;
+ rcvid = key->client_keyid;
+ } else {
+ if (key->matches_server)
+ addr = &this_ip_dest;
+ sndid = key->client_keyid;
+ rcvid = key->server_keyid;
+ set_current = key->is_current;
+ set_rnext = key->is_rnext;
+ }
+
+ if (test_add_key_cr(sk, key->password, key->len,
+ *addr, vrf, sndid, rcvid, key->maclen,
+ key->alg, set_current, set_rnext))
+ test_key_error("setsockopt(TCP_AO_ADD_KEY)", key);
+ if (set_current || set_rnext)
+ key->used_on_handshake = 1;
+#ifdef DEBUG
+ test_print("%s [%u/%u] key: { %s, %u:%u, %u, %u:%u:%u:%u (%u)}",
+ server ? "server" : "client", i, collection.nr_keys,
+ key->alg, rcvid, sndid, key->maclen,
+ key->matches_client, key->matches_server,
+ key->is_current, key->is_rnext, key->len);
+#endif
+ }
+ return sk;
+}
+
+static void verify_counters(const char *tst_name, bool is_listen_sk, bool server,
+ struct tcp_ao_counters *a, struct tcp_ao_counters *b)
+{
+ unsigned int i;
+
+ __test_tcp_ao_counters_cmp(tst_name, a, b, TEST_CNT_GOOD);
+
+ for (i = 0; i < collection.nr_keys; i++) {
+ struct test_key *key = &collection.keys[i];
+ uint8_t sndid, rcvid;
+ bool was_used;
+
+ if (server) {
+ sndid = key->server_keyid;
+ rcvid = key->client_keyid;
+ if (is_listen_sk)
+ was_used = key->used_on_handshake;
+ else
+ was_used = key->used_after_accept;
+ } else {
+ sndid = key->client_keyid;
+ rcvid = key->server_keyid;
+ was_used = key->used_on_client;
+ }
+
+ test_tcp_ao_key_counters_cmp(tst_name, a, b, was_used,
+ sndid, rcvid);
+ }
+ test_tcp_ao_counters_free(a);
+ test_tcp_ao_counters_free(b);
+ test_ok("%s: passed counters checks", tst_name);
+}
+
+static struct tcp_ao_getsockopt *lookup_key(struct tcp_ao_getsockopt *buf,
+ size_t len, int sndid, int rcvid)
+{
+ size_t i;
+
+ for (i = 0; i < len; i++) {
+ if (sndid >= 0 && buf[i].sndid != sndid)
+ continue;
+ if (rcvid >= 0 && buf[i].rcvid != rcvid)
+ continue;
+ return &buf[i];
+ }
+ return NULL;
+}
+
+static void verify_keys(const char *tst_name, int sk,
+ bool is_listen_sk, bool server)
+{
+ socklen_t len = sizeof(struct tcp_ao_getsockopt);
+ struct tcp_ao_getsockopt *keys;
+ bool passed_test = true;
+ unsigned int i;
+
+ keys = calloc(collection.nr_keys, len);
+ if (!keys)
+ test_error("calloc()");
+
+ keys->nkeys = collection.nr_keys;
+ keys->get_all = 1;
+
+ if (getsockopt(sk, IPPROTO_TCP, TCP_AO_GET_KEYS, keys, &len)) {
+ free(keys);
+ test_error("getsockopt(TCP_AO_GET_KEYS)");
+ }
+
+ for (i = 0; i < collection.nr_keys; i++) {
+ struct test_key *key = &collection.keys[i];
+ struct tcp_ao_getsockopt *dump_key;
+ bool is_kdf_aes_128_cmac = false;
+ bool is_cmac_aes = false;
+ uint8_t sndid, rcvid;
+ bool matches = false;
+
+ if (server) {
+ if (key->matches_client)
+ matches = true;
+ sndid = key->server_keyid;
+ rcvid = key->client_keyid;
+ } else {
+ if (key->matches_server)
+ matches = true;
+ sndid = key->client_keyid;
+ rcvid = key->server_keyid;
+ }
+ if (!key->matches_vrf)
+ matches = false;
+ /* no keys get removed on the original listener socket */
+ if (is_listen_sk)
+ matches = true;
+
+ dump_key = lookup_key(keys, keys->nkeys, sndid, rcvid);
+ if (matches != !!dump_key) {
+ test_fail("%s: key %u:%u %s%s on the socket",
+ tst_name, sndid, rcvid,
+ key->matches_vrf ? "" : "[vrf] ",
+ matches ? "disappeared" : "yet present");
+ passed_test = false;
+ goto out;
+ }
+ if (!dump_key)
+ continue;
+
+ if (!strcmp("cmac(aes128)", key->alg)) {
+ is_kdf_aes_128_cmac = (key->len != 16);
+ is_cmac_aes = true;
+ }
+
+ if (is_cmac_aes) {
+ if (strcmp(dump_key->alg_name, "cmac(aes)")) {
+ test_fail("%s: key %u:%u cmac(aes) has unexpected alg %s",
+ tst_name, sndid, rcvid,
+ dump_key->alg_name);
+ passed_test = false;
+ continue;
+ }
+ } else if (strcmp(dump_key->alg_name, key->alg)) {
+ test_fail("%s: key %u:%u has unexpected alg %s != %s",
+ tst_name, sndid, rcvid,
+ dump_key->alg_name, key->alg);
+ passed_test = false;
+ continue;
+ }
+ if (is_kdf_aes_128_cmac) {
+ if (dump_key->keylen != 16) {
+ test_fail("%s: key %u:%u cmac(aes128) has unexpected len %u",
+ tst_name, sndid, rcvid,
+ dump_key->keylen);
+ continue;
+ }
+ } else if (dump_key->keylen != key->len) {
+ test_fail("%s: key %u:%u changed password len %u != %u",
+ tst_name, sndid, rcvid,
+ dump_key->keylen, key->len);
+ passed_test = false;
+ continue;
+ }
+ if (!is_kdf_aes_128_cmac &&
+ memcmp(dump_key->key, key->password, key->len)) {
+ test_fail("%s: key %u:%u has different password",
+ tst_name, sndid, rcvid);
+ passed_test = false;
+ continue;
+ }
+ if (dump_key->maclen != key->maclen) {
+ test_fail("%s: key %u:%u changed maclen %u != %u",
+ tst_name, sndid, rcvid,
+ dump_key->maclen, key->maclen);
+ passed_test = false;
+ continue;
+ }
+ }
+
+ if (passed_test)
+ test_ok("%s: The socket keys are consistent with the expectations",
+ tst_name);
+out:
+ free(keys);
+}
+
+static int start_server(const char *tst_name, unsigned int port, size_t quota,
+ struct tcp_ao_counters *begin,
+ unsigned int current_index, unsigned int rnext_index)
+{
+ struct tcp_ao_counters lsk_c1, lsk_c2;
+ ssize_t bytes;
+ int sk, lsk;
+
+ synchronize_threads(); /* 1: key collection initialized */
+ lsk = key_collection_socket(true, port);
+ if (test_get_tcp_ao_counters(lsk, &lsk_c1))
+ test_error("test_get_tcp_ao_counters()");
+ synchronize_threads(); /* 2: MKTs added => connect() */
+ if (test_wait_fd(lsk, TEST_TIMEOUT_SEC, 0))
+ test_error("test_wait_fd()");
+
+ sk = accept(lsk, NULL, NULL);
+ if (sk < 0)
+ test_error("accept()");
+ if (test_get_tcp_ao_counters(sk, begin))
+ test_error("test_get_tcp_ao_counters()");
+
+ synchronize_threads(); /* 3: accepted => send data */
+ if (test_get_tcp_ao_counters(lsk, &lsk_c2))
+ test_error("test_get_tcp_ao_counters()");
+ verify_keys(tst_name, lsk, true, true);
+ close(lsk);
+
+ bytes = test_server_run(sk, quota, TEST_TIMEOUT_SEC);
+ if (bytes != quota)
+ test_fail("%s: server served: %zd", tst_name, bytes);
+ else
+ test_ok("%s: server alive", tst_name);
+
+ verify_counters(tst_name, true, true, &lsk_c1, &lsk_c2);
+
+ return sk;
+}
+
+static void end_server(const char *tst_name, int sk,
+ struct tcp_ao_counters *begin)
+{
+ struct tcp_ao_counters end;
+
+ if (test_get_tcp_ao_counters(sk, &end))
+ test_error("test_get_tcp_ao_counters()");
+ verify_keys(tst_name, sk, false, true);
+
+ synchronize_threads(); /* 4: verified => closed */
+ close(sk);
+
+ verify_counters(tst_name, true, false, begin, &end);
+ synchronize_threads(); /* 5: counters */
+}
+
+static void try_server_run(const char *tst_name, unsigned int port, size_t quota,
+ unsigned int current_index, unsigned int rnext_index)
+{
+ struct tcp_ao_counters tmp;
+ int sk;
+
+ sk = start_server(tst_name, port, quota, &tmp,
+ current_index, rnext_index);
+ end_server(tst_name, sk, &tmp);
+}
+
+static void server_rotations(const char *tst_name, unsigned int port,
+ size_t quota, unsigned int rotations,
+ unsigned int current_index, unsigned int rnext_index)
+{
+ struct tcp_ao_counters tmp;
+ unsigned int i;
+ int sk;
+
+ sk = start_server(tst_name, port, quota, &tmp,
+ current_index, rnext_index);
+
+ for (i = current_index + 1; rotations > 0; i++, rotations--) {
+ ssize_t bytes;
+
+ if (i >= collection.nr_keys)
+ i = 0;
+ bytes = test_server_run(sk, quota, TEST_TIMEOUT_SEC);
+ if (bytes != quota) {
+ test_fail("%s: server served: %zd", tst_name, bytes);
+ return;
+ }
+ verify_current_rnext(tst_name, sk,
+ collection.keys[i].server_keyid, -1);
+ synchronize_threads(); /* verify current/rnext */
+ }
+ end_server(tst_name, sk, &tmp);
+}
+
+static int run_client(const char *tst_name, unsigned int port,
+ unsigned int nr_keys, int current_index, int rnext_index,
+ struct tcp_ao_counters *before,
+ const size_t msg_sz, const size_t msg_nr)
+{
+ int sk;
+
+ synchronize_threads(); /* 1: key collection initialized */
+ sk = key_collection_socket(false, port);
+
+ if (current_index >= 0 || rnext_index >= 0) {
+ int sndid = -1, rcvid = -1;
+
+ if (current_index >= 0)
+ sndid = collection.keys[current_index].client_keyid;
+ if (rnext_index >= 0)
+ rcvid = collection.keys[rnext_index].server_keyid;
+ if (test_set_key(sk, sndid, rcvid))
+ test_error("failed to set current/rnext keys");
+ }
+ if (before && test_get_tcp_ao_counters(sk, before))
+ test_error("test_get_tcp_ao_counters()");
+
+ synchronize_threads(); /* 2: MKTs added => connect() */
+ if (test_connect_socket(sk, this_ip_dest, port++) <= 0)
+ test_error("failed to connect()");
+ if (current_index < 0)
+ current_index = nr_keys - 1;
+ if (rnext_index < 0)
+ rnext_index = nr_keys - 1;
+ collection.keys[current_index].used_on_handshake = 1;
+ collection.keys[rnext_index].used_after_accept = 1;
+ collection.keys[rnext_index].used_on_client = 1;
+
+ synchronize_threads(); /* 3: accepted => send data */
+ if (test_client_verify(sk, msg_sz, msg_nr, TEST_TIMEOUT_SEC)) {
+ test_fail("verify failed");
+ close(sk);
+ if (before)
+ test_tcp_ao_counters_free(before);
+ return -1;
+ }
+
+ return sk;
+}
+
+static int start_client(const char *tst_name, unsigned int port,
+ unsigned int nr_keys, int current_index, int rnext_index,
+ struct tcp_ao_counters *before,
+ const size_t msg_sz, const size_t msg_nr)
+{
+ if (init_default_key_collection(nr_keys, true))
+ test_error("Failed to init the key collection");
+
+ return run_client(tst_name, port, nr_keys, current_index,
+ rnext_index, before, msg_sz, msg_nr);
+}
+
+static void end_client(const char *tst_name, int sk, unsigned int nr_keys,
+ int current_index, int rnext_index,
+ struct tcp_ao_counters *start)
+{
+ struct tcp_ao_counters end;
+
+ /* Some application may become dependent on this kernel choice */
+ if (current_index < 0)
+ current_index = nr_keys - 1;
+ if (rnext_index < 0)
+ rnext_index = nr_keys - 1;
+ verify_current_rnext(tst_name, sk,
+ collection.keys[current_index].client_keyid,
+ collection.keys[rnext_index].server_keyid);
+ if (start && test_get_tcp_ao_counters(sk, &end))
+ test_error("test_get_tcp_ao_counters()");
+ verify_keys(tst_name, sk, false, false);
+ synchronize_threads(); /* 4: verify => closed */
+ close(sk);
+ if (start)
+ verify_counters(tst_name, false, false, start, &end);
+ synchronize_threads(); /* 5: counters */
+}
+
+static void try_unmatched_keys(int sk, int *rnext_index)
+{
+ struct test_key *key;
+ unsigned int i = 0;
+ int err;
+
+ do {
+ key = &collection.keys[i];
+ if (!key->matches_server)
+ break;
+ } while (++i < collection.nr_keys);
+ if (key->matches_server)
+ test_error("all keys on client match the server");
+
+ err = test_add_key_cr(sk, key->password, key->len, wrong_addr,
+ 0, key->client_keyid, key->server_keyid,
+ key->maclen, key->alg, 0, 0);
+ if (!err) {
+ test_fail("Added a key with non-matching ip-address for established sk");
+ return;
+ }
+ if (err == -EINVAL)
+ test_ok("Can't add a key with non-matching ip-address for established sk");
+ else
+ test_error("Failed to add a key");
+
+ err = test_add_key_cr(sk, key->password, key->len, this_ip_dest,
+ test_vrf_ifindex,
+ key->client_keyid, key->server_keyid,
+ key->maclen, key->alg, 0, 0);
+ if (!err) {
+ test_fail("Added a key with non-matching VRF for established sk");
+ return;
+ }
+ if (err == -EINVAL)
+ test_ok("Can't add a key with non-matching VRF for established sk");
+ else
+ test_error("Failed to add a key");
+
+ for (i = 0; i < collection.nr_keys; i++) {
+ key = &collection.keys[i];
+ if (!key->matches_client)
+ break;
+ }
+ if (key->matches_client)
+ test_error("all keys on server match the client");
+ if (test_set_key(sk, -1, key->server_keyid))
+ test_error("Can't change the current key");
+ if (test_client_verify(sk, msg_len, nr_packets, TEST_TIMEOUT_SEC))
+ test_fail("verify failed");
+ *rnext_index = i;
+}
+
+static int client_non_matching(const char *tst_name, unsigned int port,
+ unsigned int nr_keys,
+ int current_index, int rnext_index,
+ const size_t msg_sz, const size_t msg_nr)
+{
+ unsigned int i;
+
+ if (init_default_key_collection(nr_keys, true))
+ test_error("Failed to init the key collection");
+
+ for (i = 0; i < nr_keys; i++) {
+ /* key (0, 0) matches */
+ collection.keys[i].matches_client = !!((i + 3) % 4);
+ collection.keys[i].matches_server = !!((i + 2) % 4);
+ if (kernel_config_has(KCONFIG_NET_VRF))
+ collection.keys[i].matches_vrf = !!((i + 1) % 4);
+ }
+
+ return run_client(tst_name, port, nr_keys, current_index,
+ rnext_index, NULL, msg_sz, msg_nr);
+}
+
+static void check_current_back(const char *tst_name, unsigned int port,
+ unsigned int nr_keys,
+ unsigned int current_index, unsigned int rnext_index,
+ unsigned int rotate_to_index)
+{
+ struct tcp_ao_counters tmp;
+ int sk;
+
+ sk = start_client(tst_name, port, nr_keys, current_index, rnext_index,
+ &tmp, msg_len, nr_packets);
+ if (sk < 0)
+ return;
+ if (test_set_key(sk, collection.keys[rotate_to_index].client_keyid, -1))
+ test_error("Can't change the current key");
+ if (test_client_verify(sk, msg_len, nr_packets, TEST_TIMEOUT_SEC))
+ test_fail("verify failed");
+ collection.keys[rotate_to_index].used_after_accept = 1;
+
+ end_client(tst_name, sk, nr_keys, current_index, rnext_index, &tmp);
+}
+
+static void roll_over_keys(const char *tst_name, unsigned int port,
+ unsigned int nr_keys, unsigned int rotations,
+ unsigned int current_index, unsigned int rnext_index)
+{
+ struct tcp_ao_counters tmp;
+ unsigned int i;
+ int sk;
+
+ sk = start_client(tst_name, port, nr_keys, current_index, rnext_index,
+ &tmp, msg_len, nr_packets);
+ if (sk < 0)
+ return;
+ for (i = rnext_index + 1; rotations > 0; i++, rotations--) {
+ if (i >= collection.nr_keys)
+ i = 0;
+ if (test_set_key(sk, -1, collection.keys[i].server_keyid))
+ test_error("Can't change the Rnext key");
+ if (test_client_verify(sk, msg_len, nr_packets, TEST_TIMEOUT_SEC)) {
+ test_fail("verify failed");
+ close(sk);
+ test_tcp_ao_counters_free(&tmp);
+ return;
+ }
+ verify_current_rnext(tst_name, sk, -1,
+ collection.keys[i].server_keyid);
+ collection.keys[i].used_on_client = 1;
+ synchronize_threads(); /* verify current/rnext */
+ }
+ end_client(tst_name, sk, nr_keys, current_index, rnext_index, &tmp);
+}
+
+static void try_client_run(const char *tst_name, unsigned int port,
+ unsigned int nr_keys, int current_index, int rnext_index)
+{
+ struct tcp_ao_counters tmp;
+ int sk;
+
+ sk = start_client(tst_name, port, nr_keys, current_index, rnext_index,
+ &tmp, msg_len, nr_packets);
+ if (sk < 0)
+ return;
+ end_client(tst_name, sk, nr_keys, current_index, rnext_index, &tmp);
+}
+
+static void try_client_match(const char *tst_name, unsigned int port,
+ unsigned int nr_keys,
+ int current_index, int rnext_index)
+{
+ int sk;
+
+ sk = client_non_matching(tst_name, port, nr_keys, current_index,
+ rnext_index, msg_len, nr_packets);
+ if (sk < 0)
+ return;
+ try_unmatched_keys(sk, &rnext_index);
+ end_client(tst_name, sk, nr_keys, current_index, rnext_index, NULL);
+}
+
+static void *server_fn(void *arg)
+{
+ unsigned int port = test_server_port;
+
+ setup_vrfs();
+ try_server_run("server: Check current/rnext keys unset before connect()",
+ port++, quota, 19, 19);
+ try_server_run("server: Check current/rnext keys set before connect()",
+ port++, quota, 10, 10);
+ try_server_run("server: Check current != rnext keys set before connect()",
+ port++, quota, 5, 10);
+ try_server_run("server: Check current flapping back on peer's RnextKey request",
+ port++, quota * 2, 5, 10);
+ server_rotations("server: Rotate over all different keys", port++,
+ quota, 20, 0, 0);
+ try_server_run("server: Check accept() => established key matching",
+ port++, quota * 2, 0, 0);
+
+ synchronize_threads(); /* don't race to exit: client exits */
+ return NULL;
+}
+
+static void check_established_socket(void)
+{
+ unsigned int port = test_server_port;
+
+ setup_vrfs();
+ try_client_run("client: Check current/rnext keys unset before connect()",
+ port++, 20, -1, -1);
+ try_client_run("client: Check current/rnext keys set before connect()",
+ port++, 20, 10, 10);
+ try_client_run("client: Check current != rnext keys set before connect()",
+ port++, 20, 10, 5);
+ check_current_back("client: Check current flapping back on peer's RnextKey request",
+ port++, 20, 10, 5, 2);
+ roll_over_keys("client: Rotate over all different keys", port++,
+ 20, 20, 0, 0);
+ try_client_match("client: Check connect() => established key matching",
+ port++, 20, 0, 0);
+}
+
+static void *client_fn(void *arg)
+{
+ if (inet_pton(TEST_FAMILY, TEST_WRONG_IP, &wrong_addr) != 1)
+ test_error("Can't convert ip address %s", TEST_WRONG_IP);
+ check_closed_socket();
+ check_listen_socket();
+ check_established_socket();
+ return NULL;
+}
+
+int main(int argc, char *argv[])
+{
+ test_init(120, server_fn, client_fn);
+ return 0;
+}

--
2.43.0