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authorJeremy Kerr <jk@codeconstruct.com.au>2021-10-03 11:17:08 +0800
committerDavid S. Miller <davem@davemloft.net>2021-10-03 14:35:41 +0100
commit1e5e9250d4224e3ed77846bd8d29ac66fbe6f05d (patch)
treef0bff641603683a412a9be28b2733f1e9d708d1d /net/mctp
parent8892c0490779d6de921eb684e5504708fdbbcb68 (diff)
downloadlinux-1e5e9250d4224e3ed77846bd8d29ac66fbe6f05d.tar.bz2
mctp: Add input reassembly tests
Add multi-packet route input tests, for message reassembly. These will feed packets to be received by a bound socket, or dropped. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mctp')
-rw-r--r--net/mctp/test/route-test.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/net/mctp/test/route-test.c b/net/mctp/test/route-test.c
index a8254daeeb96..36fac3daf86a 100644
--- a/net/mctp/test/route-test.c
+++ b/net/mctp/test/route-test.c
@@ -395,10 +395,144 @@ static void mctp_route_input_sk_to_desc(const struct mctp_route_input_sk_test *t
KUNIT_ARRAY_PARAM(mctp_route_input_sk, mctp_route_input_sk_tests,
mctp_route_input_sk_to_desc);
+struct mctp_route_input_sk_reasm_test {
+ const char *name;
+ struct mctp_hdr hdrs[4];
+ int n_hdrs;
+ int rx_len;
+};
+
+static void mctp_test_route_input_sk_reasm(struct kunit *test)
+{
+ const struct mctp_route_input_sk_reasm_test *params;
+ struct sk_buff *skb, *skb2;
+ struct mctp_test_route *rt;
+ struct mctp_test_dev *dev;
+ struct socket *sock;
+ int i, rc;
+ u8 c;
+
+ params = test->param_value;
+
+ __mctp_route_test_init(test, &dev, &rt, &sock);
+
+ for (i = 0; i < params->n_hdrs; i++) {
+ c = i;
+ skb = mctp_test_create_skb_data(&params->hdrs[i], &c);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, skb);
+
+ skb->dev = dev->ndev;
+ __mctp_cb(skb);
+
+ rc = mctp_route_input(&rt->rt, skb);
+ }
+
+ skb2 = skb_recv_datagram(sock->sk, 0, 1, &rc);
+
+ if (params->rx_len) {
+ KUNIT_EXPECT_NOT_ERR_OR_NULL(test, skb2);
+ KUNIT_EXPECT_EQ(test, skb2->len, params->rx_len);
+ skb_free_datagram(sock->sk, skb2);
+
+ } else {
+ KUNIT_EXPECT_PTR_EQ(test, skb2, NULL);
+ }
+
+ __mctp_route_test_fini(test, dev, rt, sock);
+}
+
+#define RX_FRAG(f, s) RX_HDR(1, 10, 8, FL_T | (f) | ((s) << MCTP_HDR_SEQ_SHIFT))
+
+static const struct mctp_route_input_sk_reasm_test mctp_route_input_sk_reasm_tests[] = {
+ {
+ .name = "single packet",
+ .hdrs = {
+ RX_FRAG(FL_S | FL_E, 0),
+ },
+ .n_hdrs = 1,
+ .rx_len = 1,
+ },
+ {
+ .name = "single packet, offset seq",
+ .hdrs = {
+ RX_FRAG(FL_S | FL_E, 1),
+ },
+ .n_hdrs = 1,
+ .rx_len = 1,
+ },
+ {
+ .name = "start & end packets",
+ .hdrs = {
+ RX_FRAG(FL_S, 0),
+ RX_FRAG(FL_E, 1),
+ },
+ .n_hdrs = 2,
+ .rx_len = 2,
+ },
+ {
+ .name = "start & end packets, offset seq",
+ .hdrs = {
+ RX_FRAG(FL_S, 1),
+ RX_FRAG(FL_E, 2),
+ },
+ .n_hdrs = 2,
+ .rx_len = 2,
+ },
+ {
+ .name = "start & end packets, out of order",
+ .hdrs = {
+ RX_FRAG(FL_E, 1),
+ RX_FRAG(FL_S, 0),
+ },
+ .n_hdrs = 2,
+ .rx_len = 0,
+ },
+ {
+ .name = "start, middle & end packets",
+ .hdrs = {
+ RX_FRAG(FL_S, 0),
+ RX_FRAG(0, 1),
+ RX_FRAG(FL_E, 2),
+ },
+ .n_hdrs = 3,
+ .rx_len = 3,
+ },
+ {
+ .name = "missing seq",
+ .hdrs = {
+ RX_FRAG(FL_S, 0),
+ RX_FRAG(FL_E, 2),
+ },
+ .n_hdrs = 2,
+ .rx_len = 0,
+ },
+ {
+ .name = "seq wrap",
+ .hdrs = {
+ RX_FRAG(FL_S, 3),
+ RX_FRAG(FL_E, 0),
+ },
+ .n_hdrs = 2,
+ .rx_len = 2,
+ },
+};
+
+static void mctp_route_input_sk_reasm_to_desc(
+ const struct mctp_route_input_sk_reasm_test *t,
+ char *desc)
+{
+ sprintf(desc, "%s", t->name);
+}
+
+KUNIT_ARRAY_PARAM(mctp_route_input_sk_reasm, mctp_route_input_sk_reasm_tests,
+ mctp_route_input_sk_reasm_to_desc);
+
static struct kunit_case mctp_test_cases[] = {
KUNIT_CASE_PARAM(mctp_test_fragment, mctp_frag_gen_params),
KUNIT_CASE_PARAM(mctp_test_rx_input, mctp_rx_input_gen_params),
KUNIT_CASE_PARAM(mctp_test_route_input_sk, mctp_route_input_sk_gen_params),
+ KUNIT_CASE_PARAM(mctp_test_route_input_sk_reasm,
+ mctp_route_input_sk_reasm_gen_params),
{}
};