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authorJens Axboe <[email protected]>2024-05-11 08:25:55 -0600
committerJens Axboe <[email protected]>2024-05-11 08:25:55 -0600
commitfe6532b44af402d0900c5be3e5359f4b293524b1 (patch)
tree6cd3f9e365f14126b69979b85df2cf458f4bb23b /tools/testing/selftests/bpf/prog_tests/crypto_sanity.c
parentad1978dbbd827c1a1a7d22d9cc9ba71989dae48a (diff)
parentcddd2dc6390b90e62cec2768424d1d90f6d04161 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next into net-accept-more
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1557 commits) net: qede: use extack in qede_parse_actions() net: qede: propagate extack through qede_flow_spec_validate() net: qede: use faked extack in qede_flow_spec_to_rule() net: qede: use extack in qede_parse_flow_attr() net: qede: add extack in qede_add_tc_flower_fltr() net: qede: use extack in qede_flow_parse_udp_v4() net: qede: use extack in qede_flow_parse_udp_v6() net: qede: use extack in qede_flow_parse_tcp_v4() net: qede: use extack in qede_flow_parse_tcp_v6() net: qede: use extack in qede_flow_parse_v4_common() net: qede: use extack in qede_flow_parse_v6_common() net: qede: use extack in qede_set_v4_tuple_to_profile() net: qede: use extack in qede_set_v6_tuple_to_profile() net: qede: use extack in qede_flow_parse_ports() net: usb: smsc95xx: stop lying about skb->truesize net: dsa: microchip: Fix spellig mistake "configur" -> "configure" af_unix: Add dead flag to struct scm_fp_list. net: ethernet: adi: adin1110: Replace linux/gpio.h by proper one octeontx2-pf: Reuse Transmit queue/Send queue index of HTB class gve: Use ethtool_sprintf/puts() to fill stats strings ...
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/crypto_sanity.c')
-rw-r--r--tools/testing/selftests/bpf/prog_tests/crypto_sanity.c197
1 files changed, 197 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/crypto_sanity.c b/tools/testing/selftests/bpf/prog_tests/crypto_sanity.c
new file mode 100644
index 000000000000..b1a3a49a822a
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/crypto_sanity.c
@@ -0,0 +1,197 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <linux/in6.h>
+#include <linux/if_alg.h>
+
+#include "test_progs.h"
+#include "network_helpers.h"
+#include "crypto_sanity.skel.h"
+#include "crypto_basic.skel.h"
+
+#define NS_TEST "crypto_sanity_ns"
+#define IPV6_IFACE_ADDR "face::1"
+static const unsigned char crypto_key[] = "testtest12345678";
+static const char plain_text[] = "stringtoencrypt0";
+static int opfd = -1, tfmfd = -1;
+static const char algo[] = "ecb(aes)";
+static int init_afalg(void)
+{
+ struct sockaddr_alg sa = {
+ .salg_family = AF_ALG,
+ .salg_type = "skcipher",
+ .salg_name = "ecb(aes)"
+ };
+
+ tfmfd = socket(AF_ALG, SOCK_SEQPACKET, 0);
+ if (tfmfd == -1)
+ return errno;
+ if (bind(tfmfd, (struct sockaddr *)&sa, sizeof(sa)) == -1)
+ return errno;
+ if (setsockopt(tfmfd, SOL_ALG, ALG_SET_KEY, crypto_key, 16) == -1)
+ return errno;
+ opfd = accept(tfmfd, NULL, 0);
+ if (opfd == -1)
+ return errno;
+ return 0;
+}
+
+static void deinit_afalg(void)
+{
+ if (tfmfd != -1)
+ close(tfmfd);
+ if (opfd != -1)
+ close(opfd);
+}
+
+static void do_crypt_afalg(const void *src, void *dst, int size, bool encrypt)
+{
+ struct msghdr msg = {};
+ struct cmsghdr *cmsg;
+ char cbuf[CMSG_SPACE(4)] = {0};
+ struct iovec iov;
+
+ msg.msg_control = cbuf;
+ msg.msg_controllen = sizeof(cbuf);
+
+ cmsg = CMSG_FIRSTHDR(&msg);
+ cmsg->cmsg_level = SOL_ALG;
+ cmsg->cmsg_type = ALG_SET_OP;
+ cmsg->cmsg_len = CMSG_LEN(4);
+ *(__u32 *)CMSG_DATA(cmsg) = encrypt ? ALG_OP_ENCRYPT : ALG_OP_DECRYPT;
+
+ iov.iov_base = (char *)src;
+ iov.iov_len = size;
+
+ msg.msg_iov = &iov;
+ msg.msg_iovlen = 1;
+
+ sendmsg(opfd, &msg, 0);
+ read(opfd, dst, size);
+}
+
+void test_crypto_basic(void)
+{
+ RUN_TESTS(crypto_basic);
+}
+
+void test_crypto_sanity(void)
+{
+ LIBBPF_OPTS(bpf_tc_hook, qdisc_hook, .attach_point = BPF_TC_EGRESS);
+ LIBBPF_OPTS(bpf_tc_opts, tc_attach_enc);
+ LIBBPF_OPTS(bpf_tc_opts, tc_attach_dec);
+ LIBBPF_OPTS(bpf_test_run_opts, opts);
+ struct nstoken *nstoken = NULL;
+ struct crypto_sanity *skel;
+ char afalg_plain[16] = {0};
+ char afalg_dst[16] = {0};
+ struct sockaddr_in6 addr;
+ int sockfd, err, pfd;
+ socklen_t addrlen;
+ u16 udp_test_port;
+
+ skel = crypto_sanity__open_and_load();
+ if (!ASSERT_OK_PTR(skel, "skel open"))
+ return;
+
+ SYS(fail, "ip netns add %s", NS_TEST);
+ SYS(fail, "ip -net %s -6 addr add %s/128 dev lo nodad", NS_TEST, IPV6_IFACE_ADDR);
+ SYS(fail, "ip -net %s link set dev lo up", NS_TEST);
+
+ nstoken = open_netns(NS_TEST);
+ if (!ASSERT_OK_PTR(nstoken, "open_netns"))
+ goto fail;
+
+ err = init_afalg();
+ if (!ASSERT_OK(err, "AF_ALG init fail"))
+ goto fail;
+
+ qdisc_hook.ifindex = if_nametoindex("lo");
+ if (!ASSERT_GT(qdisc_hook.ifindex, 0, "if_nametoindex lo"))
+ goto fail;
+
+ skel->bss->key_len = 16;
+ skel->bss->authsize = 0;
+ udp_test_port = skel->data->udp_test_port;
+ memcpy(skel->bss->key, crypto_key, sizeof(crypto_key));
+ snprintf(skel->bss->algo, 128, "%s", algo);
+ pfd = bpf_program__fd(skel->progs.skb_crypto_setup);
+ if (!ASSERT_GT(pfd, 0, "skb_crypto_setup fd"))
+ goto fail;
+
+ err = bpf_prog_test_run_opts(pfd, &opts);
+ if (!ASSERT_OK(err, "skb_crypto_setup") ||
+ !ASSERT_OK(opts.retval, "skb_crypto_setup retval"))
+ goto fail;
+
+ if (!ASSERT_OK(skel->bss->status, "skb_crypto_setup status"))
+ goto fail;
+
+ err = bpf_tc_hook_create(&qdisc_hook);
+ if (!ASSERT_OK(err, "create qdisc hook"))
+ goto fail;
+
+ addrlen = sizeof(addr);
+ err = make_sockaddr(AF_INET6, IPV6_IFACE_ADDR, udp_test_port,
+ (void *)&addr, &addrlen);
+ if (!ASSERT_OK(err, "make_sockaddr"))
+ goto fail;
+
+ tc_attach_enc.prog_fd = bpf_program__fd(skel->progs.encrypt_sanity);
+ err = bpf_tc_attach(&qdisc_hook, &tc_attach_enc);
+ if (!ASSERT_OK(err, "attach encrypt filter"))
+ goto fail;
+
+ sockfd = socket(AF_INET6, SOCK_DGRAM, 0);
+ if (!ASSERT_NEQ(sockfd, -1, "encrypt socket"))
+ goto fail;
+ err = sendto(sockfd, plain_text, sizeof(plain_text), 0, (void *)&addr, addrlen);
+ close(sockfd);
+ if (!ASSERT_EQ(err, sizeof(plain_text), "encrypt send"))
+ goto fail;
+
+ do_crypt_afalg(plain_text, afalg_dst, sizeof(afalg_dst), true);
+
+ if (!ASSERT_OK(skel->bss->status, "encrypt status"))
+ goto fail;
+ if (!ASSERT_STRNEQ(skel->bss->dst, afalg_dst, sizeof(afalg_dst), "encrypt AF_ALG"))
+ goto fail;
+
+ tc_attach_enc.flags = tc_attach_enc.prog_fd = tc_attach_enc.prog_id = 0;
+ err = bpf_tc_detach(&qdisc_hook, &tc_attach_enc);
+ if (!ASSERT_OK(err, "bpf_tc_detach encrypt"))
+ goto fail;
+
+ tc_attach_dec.prog_fd = bpf_program__fd(skel->progs.decrypt_sanity);
+ err = bpf_tc_attach(&qdisc_hook, &tc_attach_dec);
+ if (!ASSERT_OK(err, "attach decrypt filter"))
+ goto fail;
+
+ sockfd = socket(AF_INET6, SOCK_DGRAM, 0);
+ if (!ASSERT_NEQ(sockfd, -1, "decrypt socket"))
+ goto fail;
+ err = sendto(sockfd, afalg_dst, sizeof(afalg_dst), 0, (void *)&addr, addrlen);
+ close(sockfd);
+ if (!ASSERT_EQ(err, sizeof(afalg_dst), "decrypt send"))
+ goto fail;
+
+ do_crypt_afalg(afalg_dst, afalg_plain, sizeof(afalg_plain), false);
+
+ if (!ASSERT_OK(skel->bss->status, "decrypt status"))
+ goto fail;
+ if (!ASSERT_STRNEQ(skel->bss->dst, afalg_plain, sizeof(afalg_plain), "decrypt AF_ALG"))
+ goto fail;
+
+ tc_attach_dec.flags = tc_attach_dec.prog_fd = tc_attach_dec.prog_id = 0;
+ err = bpf_tc_detach(&qdisc_hook, &tc_attach_dec);
+ ASSERT_OK(err, "bpf_tc_detach decrypt");
+
+fail:
+ close_netns(nstoken);
+ deinit_afalg();
+ SYS_NOFAIL("ip netns del " NS_TEST " &> /dev/null");
+ crypto_sanity__destroy(skel);
+}