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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>
This commit is contained in:
Jeremy Kerr 2021-10-03 11:17:08 +08:00 committed by David S. Miller
parent 8892c04907
commit 1e5e9250d4
1 changed files with 134 additions and 0 deletions
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134
net/mctp/test/route-test.c
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@ -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),
{}
};