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added unit tests for data-after-FIN

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This commit is contained in:
Simon Goldschmidt 2011-09-26 22:10:11 +02:00
parent bcfe3dacc6
commit 7524f9006e
1 changed files with 230 additions and 0 deletions
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230
test/unit/tcp/test_tcp_oos.c
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@ -526,6 +526,220 @@ START_TEST(test_tcp_recv_ooseq_overrun_rxwin)
}
END_TEST
static void
check_rx_counters(struct tcp_pcb *pcb, struct test_tcp_counters *counters, u32_t exp_close_calls, u32_t exp_rx_calls,
u32_t exp_rx_bytes, u32_t exp_err_calls, int exp_oos_count, int exp_oos_len)
{
int oos_len;
EXPECT(counters->close_calls == exp_close_calls);
EXPECT(counters->recv_calls == exp_rx_calls);
EXPECT(counters->recved_bytes == exp_rx_bytes);
EXPECT(counters->err_calls == exp_err_calls);
/* check that pbuf is queued in ooseq */
EXPECT_OOSEQ(tcp_oos_count(pcb) == exp_oos_count);
oos_len = tcp_oos_tcplen(pcb);
EXPECT_OOSEQ(exp_oos_len == oos_len);
}
/* this test uses 4 packets:
* - data (len=TCP_MSS)
* - FIN
* - data after FIN (len=1) (invalid)
* - 2nd FIN (invalid)
*
* the parameter 'delay_packet' is a bitmask that choses which on these packets is ooseq
*/
static void test_tcp_recv_ooseq_double_FINs(int delay_packet)
{
int i, k;
struct test_tcp_counters counters;
struct tcp_pcb* pcb;
struct pbuf *p_normal_fin, *p_data_after_fin, *p, *p_2nd_fin_ooseq;
ip_addr_t remote_ip, local_ip;
u16_t remote_port = 0x100, local_port = 0x101;
struct netif netif;
u32_t exp_rx_calls = 0, exp_rx_bytes = 0, exp_close_calls = 0, exp_oos_pbufs = 0, exp_oos_tcplen = 0;
int first_dropped = 0xff;
int last_dropped = 0;
for(i = 0; i < sizeof(data_full_wnd); i++) {
data_full_wnd[i] = (char)i;
}
/* initialize local vars */
memset(&netif, 0, sizeof(netif));
IP4_ADDR(&local_ip, 192, 168, 1, 1);
IP4_ADDR(&remote_ip, 192, 168, 1, 2);
/* initialize counter struct */
memset(&counters, 0, sizeof(counters));
counters.expected_data_len = TCP_WND;
counters.expected_data = data_full_wnd;
/* create and initialize the pcb */
pcb = test_tcp_new_counters_pcb(&counters);
EXPECT_RET(pcb != NULL);
tcp_set_state(pcb, ESTABLISHED, &local_ip, &remote_ip, local_port, remote_port);
pcb->rcv_nxt = 0x8000;
/* create segments */
p = tcp_create_rx_segment(pcb, &data_full_wnd[0], TCP_MSS, 0, 0, TCP_ACK);
p_normal_fin = tcp_create_rx_segment(pcb, NULL, 0, TCP_MSS, 0, TCP_ACK|TCP_FIN);
k = 1;
p_data_after_fin = tcp_create_rx_segment(pcb, &data_full_wnd[TCP_MSS+1], k, TCP_MSS+1, 0, TCP_ACK);
p_2nd_fin_ooseq = tcp_create_rx_segment(pcb, NULL, 0, TCP_MSS+1+k, 0, TCP_ACK|TCP_FIN);
if(delay_packet & 1) {
/* drop normal data */
first_dropped = 1;
last_dropped = 1;
} else {
/* send normal data */
test_tcp_input(p, &netif);
exp_rx_calls++;
exp_rx_bytes += TCP_MSS;
}
/* check if counters are as expected */
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
if(delay_packet & 2) {
/* drop FIN */
if(first_dropped > 2) {
first_dropped = 2;
}
last_dropped = 2;
} else {
/* send FIN */
test_tcp_input(p_normal_fin, &netif);
if (first_dropped < 2) {
/* already dropped packets, this one is ooseq */
exp_oos_pbufs++;
exp_oos_tcplen++;
} else {
/* inseq */
exp_close_calls++;
}
}
/* check if counters are as expected */
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
if(delay_packet & 4) {
/* drop data-after-FIN */
if(first_dropped > 3) {
first_dropped = 3;
}
last_dropped = 3;
} else {
/* send data-after-FIN */
test_tcp_input(p_data_after_fin, &netif);
if (first_dropped < 3) {
/* already dropped packets, this one is ooseq */
if (delay_packet & 2) {
/* correct FIN was ooseq */
exp_oos_pbufs++;
exp_oos_tcplen += k;
}
} else {
/* inseq: no change */
}
}
/* check if counters are as expected */
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
if(delay_packet & 8) {
/* drop 2nd-FIN */
if(first_dropped > 4) {
first_dropped = 4;
}
last_dropped = 4;
} else {
/* send 2nd-FIN */
test_tcp_input(p_2nd_fin_ooseq, &netif);
if (first_dropped < 3) {
/* already dropped packets, this one is ooseq */
if (delay_packet & 2) {
/* correct FIN was ooseq */
exp_oos_pbufs++;
exp_oos_tcplen++;
}
} else {
/* inseq: no change */
}
}
/* check if counters are as expected */
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
if(delay_packet & 1) {
/* dropped normal data before */
test_tcp_input(p, &netif);
exp_rx_calls++;
exp_rx_bytes += TCP_MSS;
if((delay_packet & 2) == 0) {
/* normal FIN was NOT delayed */
exp_close_calls++;
exp_oos_pbufs = exp_oos_tcplen = 0;
}
}
/* check if counters are as expected */
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
if(delay_packet & 2) {
/* dropped normal FIN before */
test_tcp_input(p_normal_fin, &netif);
exp_close_calls++;
exp_oos_pbufs = exp_oos_tcplen = 0;
}
/* check if counters are as expected */
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
if(delay_packet & 4) {
/* dropped data-after-FIN before */
test_tcp_input(p_data_after_fin, &netif);
}
/* check if counters are as expected */
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
if(delay_packet & 8) {
/* dropped 2nd-FIN before */
test_tcp_input(p_2nd_fin_ooseq, &netif);
}
/* check if counters are as expected */
check_rx_counters(pcb, &counters, exp_close_calls, exp_rx_calls, exp_rx_bytes, 0, exp_oos_pbufs, exp_oos_tcplen);
/* check that ooseq data has been dumped */
EXPECT(pcb->ooseq == NULL);
/* make sure the pcb is freed */
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 1);
tcp_abort(pcb);
EXPECT(lwip_stats.memp[MEMP_TCP_PCB].used == 0);
}
/** create multiple segments and pass them to tcp_input with the first segment missing
* to simulate overruning the rxwin with ooseq queueing enabled */
#define FIN_TEST(name, num) \
START_TEST(name) \
{ \
LWIP_UNUSED_ARG(_i); \
test_tcp_recv_ooseq_double_FINs(num); \
} \
END_TEST
FIN_TEST(test_tcp_recv_ooseq_double_FIN_0, 0)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_1, 1)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_2, 2)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_3, 3)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_4, 4)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_5, 5)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_6, 6)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_7, 7)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_8, 8)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_9, 9)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_10, 10)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_11, 11)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_12, 12)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_13, 13)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_14, 14)
FIN_TEST(test_tcp_recv_ooseq_double_FIN_15, 15)
/** Create the suite including all tests for this module */
Suite *
@ -535,6 +749,22 @@ tcp_oos_suite(void)
test_tcp_recv_ooseq_FIN_OOSEQ,
test_tcp_recv_ooseq_FIN_INSEQ,
test_tcp_recv_ooseq_overrun_rxwin,
test_tcp_recv_ooseq_double_FIN_0,
test_tcp_recv_ooseq_double_FIN_1,
test_tcp_recv_ooseq_double_FIN_2,
test_tcp_recv_ooseq_double_FIN_3,
test_tcp_recv_ooseq_double_FIN_4,
test_tcp_recv_ooseq_double_FIN_5,
test_tcp_recv_ooseq_double_FIN_6,
test_tcp_recv_ooseq_double_FIN_7,
test_tcp_recv_ooseq_double_FIN_8,
test_tcp_recv_ooseq_double_FIN_9,
test_tcp_recv_ooseq_double_FIN_10,
test_tcp_recv_ooseq_double_FIN_11,
test_tcp_recv_ooseq_double_FIN_12,
test_tcp_recv_ooseq_double_FIN_13,
test_tcp_recv_ooseq_double_FIN_14,
test_tcp_recv_ooseq_double_FIN_15
};
return create_suite("TCP_OOS", tests, sizeof(tests)/sizeof(TFun), tcp_oos_setup, tcp_oos_teardown);
}