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([2804:14c:bbe3:4606:db64:8f3b:3c73:e436]) by smtp.gmail.com with ESMTPSA id g17-20020a056870c39100b001726cfeea97sm2360707oao.29.2023.06.09.09.43.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Jun 2023 09:43:36 -0700 (PDT) From: Magali Lemes To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, shuah@kernel.org, vfedorenko@novek.ru, tianjia.zhang@linux.alibaba.com Cc: andrei.gherzan@canonical.com, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net v2 1/3] selftests: net: tls: check if FIPS mode is enabled Date: Fri, 9 Jun 2023 13:43:22 -0300 Message-Id: <20230609164324.497813-2-magali.lemes@canonical.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230609164324.497813-1-magali.lemes@canonical.com> References: <20230609164324.497813-1-magali.lemes@canonical.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org TLS selftests use the ChaCha20-Poly1305 and SM4 algorithms, which are not FIPS compliant. When fips=1, this set of tests fails. Add a check and only run these tests if not in FIPS mode. Fixes: 4f336e88a870 ("selftests/tls: add CHACHA20-POLY1305 to tls selftests") Fixes: e506342a03c7 ("selftests/tls: add SM4 GCM/CCM to tls selftests") Signed-off-by: Magali Lemes --- Changes in v2: - Put fips_non_compliant into the variants. - Turn fips_enabled into a static global variable. - Read /proc/sys/crypto/fips_enabled only once at main(). tools/testing/selftests/net/tls.c | 175 +++++++++++++++++++++++++++++- 1 file changed, 174 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/tls.c b/tools/testing/selftests/net/tls.c index e699548d4247..0725c60f227c 100644 --- a/tools/testing/selftests/net/tls.c +++ b/tools/testing/selftests/net/tls.c @@ -25,6 +25,8 @@ #define TLS_PAYLOAD_MAX_LEN 16384 #define SOL_TLS 282 +static int fips_enabled = 0; + struct tls_crypto_info_keys { union { struct tls12_crypto_info_aes_gcm_128 aes128; @@ -235,7 +237,7 @@ FIXTURE_VARIANT(tls) { uint16_t tls_version; uint16_t cipher_type; - bool nopad; + bool nopad, fips_non_compliant; }; FIXTURE_VARIANT_ADD(tls, 12_aes_gcm) @@ -254,24 +256,28 @@ FIXTURE_VARIANT_ADD(tls, 12_chacha) { .tls_version = TLS_1_2_VERSION, .cipher_type = TLS_CIPHER_CHACHA20_POLY1305, + .fips_non_compliant = true, }; FIXTURE_VARIANT_ADD(tls, 13_chacha) { .tls_version = TLS_1_3_VERSION, .cipher_type = TLS_CIPHER_CHACHA20_POLY1305, + .fips_non_compliant = true, }; FIXTURE_VARIANT_ADD(tls, 13_sm4_gcm) { .tls_version = TLS_1_3_VERSION, .cipher_type = TLS_CIPHER_SM4_GCM, + .fips_non_compliant = true, }; FIXTURE_VARIANT_ADD(tls, 13_sm4_ccm) { .tls_version = TLS_1_3_VERSION, .cipher_type = TLS_CIPHER_SM4_CCM, + .fips_non_compliant = true, }; FIXTURE_VARIANT_ADD(tls, 12_aes_ccm) @@ -311,6 +317,9 @@ FIXTURE_SETUP(tls) int one = 1; int ret; + if (fips_enabled && variant->fips_non_compliant) + return; + tls_crypto_info_init(variant->tls_version, variant->cipher_type, &tls12); @@ -343,6 +352,9 @@ TEST_F(tls, sendfile) int filefd = open("/proc/self/exe", O_RDONLY); struct stat st; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_GE(filefd, 0); fstat(filefd, &st); EXPECT_GE(sendfile(self->fd, filefd, 0, st.st_size), 0); @@ -357,6 +369,9 @@ TEST_F(tls, send_then_sendfile) struct stat st; char *buf; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_GE(filefd, 0); fstat(filefd, &st); buf = (char *)malloc(st.st_size); @@ -406,6 +421,10 @@ static void chunked_sendfile(struct __test_metadata *_metadata, TEST_F(tls, multi_chunk_sendfile) { + + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + chunked_sendfile(_metadata, self, 4096, 4096); chunked_sendfile(_metadata, self, 4096, 0); chunked_sendfile(_metadata, self, 4096, 1); @@ -433,6 +452,9 @@ TEST_F(tls, recv_max) char recv_mem[TLS_PAYLOAD_MAX_LEN]; char buf[TLS_PAYLOAD_MAX_LEN]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memrnd(buf, sizeof(buf)); EXPECT_GE(send(self->fd, buf, send_len, 0), 0); @@ -446,6 +468,9 @@ TEST_F(tls, recv_small) int send_len = 10; char buf[10]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + send_len = strlen(test_str) + 1; EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); EXPECT_NE(recv(self->cfd, buf, send_len, 0), -1); @@ -458,6 +483,9 @@ TEST_F(tls, msg_more) int send_len = 10; char buf[10 * 2]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_EQ(send(self->fd, test_str, send_len, MSG_MORE), send_len); EXPECT_EQ(recv(self->cfd, buf, send_len, MSG_DONTWAIT), -1); EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); @@ -472,6 +500,9 @@ TEST_F(tls, msg_more_unsent) int send_len = 10; char buf[10]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_EQ(send(self->fd, test_str, send_len, MSG_MORE), send_len); EXPECT_EQ(recv(self->cfd, buf, send_len, MSG_DONTWAIT), -1); } @@ -485,6 +516,9 @@ TEST_F(tls, sendmsg_single) struct iovec vec; char buf[13]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + vec.iov_base = (char *)test_str; vec.iov_len = send_len; memset(&msg, 0, sizeof(struct msghdr)); @@ -505,6 +539,9 @@ TEST_F(tls, sendmsg_fragmented) struct msghdr msg; int i, frags; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + for (frags = 1; frags <= MAX_FRAGS; frags++) { for (i = 0; i < frags; i++) { vec[i].iov_base = (char *)test_str; @@ -536,6 +573,9 @@ TEST_F(tls, sendmsg_large) size_t recvs = 0; size_t sent = 0; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memset(&msg, 0, sizeof(struct msghdr)); while (sent++ < sends) { struct iovec vec = { (void *)mem, send_len }; @@ -564,6 +604,9 @@ TEST_F(tls, sendmsg_multiple) char *buf; int i; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memset(&msg, 0, sizeof(struct msghdr)); for (i = 0; i < iov_len; i++) { test_strs[i] = (char *)malloc(strlen(test_str) + 1); @@ -601,6 +644,9 @@ TEST_F(tls, sendmsg_multiple_stress) int len_cmp = 0; int i; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memset(&msg, 0, sizeof(struct msghdr)); for (i = 0; i < iov_len; i++) { test_strs[i] = (char *)malloc(strlen(test_str) + 1); @@ -629,6 +675,9 @@ TEST_F(tls, splice_from_pipe) char mem_recv[TLS_PAYLOAD_MAX_LEN]; int p[2]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + ASSERT_GE(pipe(p), 0); EXPECT_GE(write(p[1], mem_send, send_len), 0); EXPECT_GE(splice(p[0], NULL, self->fd, NULL, send_len, 0), 0); @@ -644,6 +693,9 @@ TEST_F(tls, splice_from_pipe2) int p2[2]; int p[2]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memrnd(mem_send, sizeof(mem_send)); ASSERT_GE(pipe(p), 0); @@ -666,6 +718,9 @@ TEST_F(tls, send_and_splice) char buf[10]; int p[2]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + ASSERT_GE(pipe(p), 0); EXPECT_EQ(send(self->fd, test_str, send_len2, 0), send_len2); EXPECT_EQ(recv(self->cfd, buf, send_len2, MSG_WAITALL), send_len2); @@ -685,6 +740,9 @@ TEST_F(tls, splice_to_pipe) char mem_recv[TLS_PAYLOAD_MAX_LEN]; int p[2]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memrnd(mem_send, sizeof(mem_send)); ASSERT_GE(pipe(p), 0); @@ -705,6 +763,9 @@ TEST_F(tls, splice_cmsg_to_pipe) if (self->notls) SKIP(return, "no TLS support"); + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + ASSERT_GE(pipe(p), 0); EXPECT_EQ(tls_send_cmsg(self->fd, 100, test_str, send_len, 0), 10); EXPECT_EQ(splice(self->cfd, NULL, p[1], NULL, send_len, 0), -1); @@ -728,6 +789,9 @@ TEST_F(tls, splice_dec_cmsg_to_pipe) if (self->notls) SKIP(return, "no TLS support"); + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + ASSERT_GE(pipe(p), 0); EXPECT_EQ(tls_send_cmsg(self->fd, 100, test_str, send_len, 0), 10); EXPECT_EQ(recv(self->cfd, buf, send_len, 0), -1); @@ -748,6 +812,9 @@ TEST_F(tls, recv_and_splice) int half = send_len / 2; int p[2]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + ASSERT_GE(pipe(p), 0); EXPECT_EQ(send(self->fd, mem_send, send_len, 0), send_len); /* Recv hald of the record, splice the other half */ @@ -766,6 +833,9 @@ TEST_F(tls, peek_and_splice) int chunk = TLS_PAYLOAD_MAX_LEN / 4; int n, i, p[2]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memrnd(mem_send, sizeof(mem_send)); ASSERT_GE(pipe(p), 0); @@ -797,6 +867,9 @@ TEST_F(tls, recvmsg_single) struct msghdr hdr; struct iovec vec; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memset(&hdr, 0, sizeof(hdr)); EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); vec.iov_base = (char *)buf; @@ -815,6 +888,9 @@ TEST_F(tls, recvmsg_single_max) struct iovec vec; struct msghdr hdr; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memrnd(send_mem, sizeof(send_mem)); EXPECT_EQ(send(self->fd, send_mem, send_len, 0), send_len); @@ -840,6 +916,9 @@ TEST_F(tls, recvmsg_multiple) memrnd(buf, sizeof(buf)); + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_EQ(send(self->fd, buf, send_len, 0), send_len); for (i = 0; i < msg_iovlen; i++) { iov_base[i] = (char *)malloc(iov_len); @@ -862,6 +941,9 @@ TEST_F(tls, single_send_multiple_recv) char send_mem[TLS_PAYLOAD_MAX_LEN * 2]; char recv_mem[TLS_PAYLOAD_MAX_LEN * 2]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memrnd(send_mem, sizeof(send_mem)); EXPECT_GE(send(self->fd, send_mem, total_len, 0), 0); @@ -879,6 +961,9 @@ TEST_F(tls, multiple_send_single_recv) char recv_mem[2 * 10]; char send_mem[10]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memrnd(send_mem, sizeof(send_mem)); EXPECT_GE(send(self->fd, send_mem, send_len, 0), 0); @@ -897,6 +982,9 @@ TEST_F(tls, single_send_multiple_recv_non_align) char recv_mem[recv_len * 2]; char send_mem[total_len]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memrnd(send_mem, sizeof(send_mem)); EXPECT_GE(send(self->fd, send_mem, total_len, 0), 0); @@ -915,6 +1003,9 @@ TEST_F(tls, recv_partial) int send_len = strlen(test_str) + 1; char recv_mem[18]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + memset(recv_mem, 0, sizeof(recv_mem)); EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); EXPECT_NE(recv(self->cfd, recv_mem, strlen(test_str_first), @@ -932,6 +1023,9 @@ TEST_F(tls, recv_nonblock) char buf[4096]; bool err; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_EQ(recv(self->cfd, buf, sizeof(buf), MSG_DONTWAIT), -1); err = (errno == EAGAIN || errno == EWOULDBLOCK); EXPECT_EQ(err, true); @@ -943,6 +1037,9 @@ TEST_F(tls, recv_peek) int send_len = strlen(test_str) + 1; char buf[15]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); EXPECT_EQ(recv(self->cfd, buf, send_len, MSG_PEEK), send_len); EXPECT_EQ(memcmp(test_str, buf, send_len), 0); @@ -959,6 +1056,9 @@ TEST_F(tls, recv_peek_multiple) char buf[15]; int i; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); for (i = 0; i < num_peeks; i++) { EXPECT_NE(recv(self->cfd, buf, send_len, MSG_PEEK), -1); @@ -977,6 +1077,9 @@ TEST_F(tls, recv_peek_multiple_records) int len; char buf[64]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + len = strlen(test_str_first); EXPECT_EQ(send(self->fd, test_str_first, len, 0), len); @@ -1026,6 +1129,9 @@ TEST_F(tls, recv_peek_large_buf_mult_recs) int len; char buf[64]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + len = strlen(test_str_first); EXPECT_EQ(send(self->fd, test_str_first, len, 0), len); @@ -1046,6 +1152,9 @@ TEST_F(tls, recv_lowat) char recv_mem[20]; int lowat = 8; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_EQ(send(self->fd, send_mem, 10, 0), 10); EXPECT_EQ(send(self->fd, send_mem, 5, 0), 5); @@ -1067,6 +1176,9 @@ TEST_F(tls, bidir) char buf[10]; int ret; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + if (!self->notls) { struct tls_crypto_info_keys tls12; @@ -1102,6 +1214,9 @@ TEST_F(tls, pollin) char buf[10]; int send_len = 10; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); fd.fd = self->cfd; fd.events = POLLIN; @@ -1120,6 +1235,9 @@ TEST_F(tls, poll_wait) struct pollfd fd = { 0, 0, 0 }; char recv_mem[15]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + fd.fd = self->cfd; fd.events = POLLIN; EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); @@ -1135,6 +1253,9 @@ TEST_F(tls, poll_wait_split) char send_mem[20] = {}; char recv_mem[15]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + fd.fd = self->cfd; fd.events = POLLIN; /* Send 20 bytes */ @@ -1160,6 +1281,9 @@ TEST_F(tls, blocking) size_t data = 100000; int res = fork(); + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_NE(res, -1); if (res) { @@ -1202,6 +1326,9 @@ TEST_F(tls, nonblocking) int flags; int res; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + flags = fcntl(self->fd, F_GETFL, 0); fcntl(self->fd, F_SETFL, flags | O_NONBLOCK); fcntl(self->cfd, F_SETFL, flags | O_NONBLOCK); @@ -1343,31 +1470,49 @@ test_mutliproc(struct __test_metadata *_metadata, struct _test_data_tls *self, TEST_F(tls, mutliproc_even) { + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + test_mutliproc(_metadata, self, false, 6, 6); } TEST_F(tls, mutliproc_readers) { + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + test_mutliproc(_metadata, self, false, 4, 12); } TEST_F(tls, mutliproc_writers) { + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + test_mutliproc(_metadata, self, false, 10, 2); } TEST_F(tls, mutliproc_sendpage_even) { + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + test_mutliproc(_metadata, self, true, 6, 6); } TEST_F(tls, mutliproc_sendpage_readers) { + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + test_mutliproc(_metadata, self, true, 4, 12); } TEST_F(tls, mutliproc_sendpage_writers) { + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + test_mutliproc(_metadata, self, true, 10, 2); } @@ -1378,6 +1523,9 @@ TEST_F(tls, control_msg) int send_len = 10; char buf[10]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + if (self->notls) SKIP(return, "no TLS support"); @@ -1406,6 +1554,9 @@ TEST_F(tls, shutdown) int send_len = 10; char buf[10]; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + ASSERT_EQ(strlen(test_str) + 1, send_len); EXPECT_EQ(send(self->fd, test_str, send_len, 0), send_len); @@ -1421,6 +1572,9 @@ TEST_F(tls, shutdown_unsent) char const *test_str = "test_read"; int send_len = 10; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + EXPECT_EQ(send(self->fd, test_str, send_len, MSG_MORE), send_len); shutdown(self->fd, SHUT_RDWR); @@ -1432,6 +1586,9 @@ TEST_F(tls, shutdown_reuse) struct sockaddr_in addr; int ret; + if (fips_enabled && variant->fips_non_compliant) + SKIP(return, "Unsupported cipher in FIPS mode"); + shutdown(self->fd, SHUT_RDWR); shutdown(self->cfd, SHUT_RDWR); close(self->cfd); @@ -1865,4 +2022,20 @@ TEST(prequeue) { close(cfd); } +#define main test_main TEST_HARNESS_MAIN +#undef main +int main(int argc, char **argv) { + int res; + FILE *f; + + f = fopen("/proc/sys/crypto/fips_enabled", "r"); + if (f) { + res = fscanf(f, "%d", &fips_enabled); + if (res != 1) + ksft_print_msg("ERROR: Couldn't read /proc/sys/crypto/fips_enabled\n"); + fclose(f); + } + + return test_main(argc, argv); +}