lwip/test/unit/udp/test_udp.c

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#include "test_udp.h"
#include "lwip/udp.h"
#include "lwip/stats.h"
#include "lwip/inet_chksum.h"
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#if !LWIP_STATS || !UDP_STATS || !MEMP_STATS
#error "This tests needs UDP- and MEMP-statistics enabled"
#endif
struct test_udp_rxdata {
u32_t rx_cnt;
u32_t rx_bytes;
struct udp_pcb *pcb;
};
static struct netif test_netif1, test_netif2;
static ip4_addr_t test_gw1, test_ipaddr1, test_netmask1;
static ip4_addr_t test_gw2, test_ipaddr2, test_netmask2;
static int output_ctr, linkoutput_ctr;
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/* Helper functions */
static void
udp_remove_all(void)
{
struct udp_pcb *pcb = udp_pcbs;
struct udp_pcb *pcb2;
while(pcb != NULL) {
pcb2 = pcb;
pcb = pcb->next;
udp_remove(pcb2);
}
fail_unless(MEMP_STATS_GET(used, MEMP_UDP_PCB) == 0);
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}
static err_t
default_netif_output(struct netif *netif, struct pbuf *p, const ip4_addr_t *ipaddr)
{
fail_unless((netif == &test_netif1) || (netif == &test_netif2));
fail_unless(p != NULL);
fail_unless(ipaddr != NULL);
output_ctr++;
return ERR_OK;
}
static err_t
default_netif_linkoutput(struct netif *netif, struct pbuf *p)
{
fail_unless((netif == &test_netif1) || (netif == &test_netif2));
fail_unless(p != NULL);
linkoutput_ctr++;
return ERR_OK;
}
static err_t
default_netif_init(struct netif *netif)
{
fail_unless(netif != NULL);
netif->output = default_netif_output;
netif->linkoutput = default_netif_linkoutput;
netif->mtu = 1500;
netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
netif->hwaddr_len = 6;
return ERR_OK;
}
static void
default_netif_add(void)
{
struct netif *n;
#if LWIP_HAVE_LOOPIF
fail_unless(netif_list != NULL); /* the loopif */
fail_unless(netif_list->next == NULL);
#else
fail_unless(netif_list == NULL);
#endif
fail_unless(netif_default == NULL);
IP4_ADDR(&test_ipaddr1, 192,168,0,1);
IP4_ADDR(&test_netmask1, 255,255,255,0);
IP4_ADDR(&test_gw1, 192,168,0,254);
n = netif_add(&test_netif1, &test_ipaddr1, &test_netmask1,
&test_gw1, NULL, default_netif_init, NULL);
fail_unless(n == &test_netif1);
IP4_ADDR(&test_ipaddr2, 192,168,1,1);
IP4_ADDR(&test_netmask2, 255,255,255,0);
IP4_ADDR(&test_gw2, 192,168,1,254);
n = netif_add(&test_netif2, &test_ipaddr2, &test_netmask2,
&test_gw2, NULL, default_netif_init, NULL);
fail_unless(n == &test_netif2);
netif_set_default(&test_netif1);
netif_set_up(&test_netif1);
netif_set_up(&test_netif2);
}
static void
default_netif_remove(void)
{
fail_unless(netif_default == &test_netif1);
netif_remove(&test_netif1);
netif_remove(&test_netif2);
fail_unless(netif_default == NULL);
#if LWIP_HAVE_LOOPIF
fail_unless(netif_list != NULL); /* the loopif */
fail_unless(netif_list->next == NULL);
#else
fail_unless(netif_list == NULL);
#endif
}
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/* Setups/teardown functions */
static void
udp_setup(void)
{
udp_remove_all();
default_netif_add();
lwip_check_ensure_no_alloc(SKIP_POOL(MEMP_SYS_TIMEOUT));
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}
static void
udp_teardown(void)
{
udp_remove_all();
default_netif_remove();
lwip_check_ensure_no_alloc(SKIP_POOL(MEMP_SYS_TIMEOUT));
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}
/* Test functions */
START_TEST(test_udp_new_remove)
{
struct udp_pcb* pcb;
LWIP_UNUSED_ARG(_i);
fail_unless(MEMP_STATS_GET(used, MEMP_UDP_PCB) == 0);
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pcb = udp_new();
fail_unless(pcb != NULL);
if (pcb != NULL) {
fail_unless(MEMP_STATS_GET(used, MEMP_UDP_PCB) == 1);
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udp_remove(pcb);
fail_unless(MEMP_STATS_GET(used, MEMP_UDP_PCB) == 0);
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}
}
END_TEST
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static void test_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p,
const ip_addr_t *addr, u16_t port)
{
struct test_udp_rxdata *ctr = (struct test_udp_rxdata *)arg;
LWIP_UNUSED_ARG(addr);
LWIP_UNUSED_ARG(port);
fail_unless(arg != NULL);
fail_unless(ctr->pcb == pcb);
ctr->rx_cnt++;
ctr->rx_bytes += p->tot_len;
if (p != NULL) {
pbuf_free(p);
}
}
static struct pbuf *
test_udp_create_test_packet(u16_t length, u16_t port, u32_t dst_addr)
{
err_t err;
u8_t ret;
struct udp_hdr *uh;
struct ip_hdr *ih;
struct pbuf *p;
const u8_t test_data[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};
p = pbuf_alloc(PBUF_TRANSPORT, length, PBUF_POOL);
fail_unless(p != NULL);
if (p == NULL) {
return NULL;
}
fail_unless(p->next == NULL);
err = pbuf_take(p, test_data, length);
fail_unless(err == ERR_OK);
/* add UDP header */
ret = pbuf_add_header(p, sizeof(struct udp_hdr));
fail_unless(!ret);
uh = (struct udp_hdr *)p->payload;
uh->chksum = 0;
uh->dest = uh->src = lwip_htons(port);
uh->len = lwip_htons(p->tot_len);
/* add IPv4 header */
ret = pbuf_add_header(p, sizeof(struct ip_hdr));
fail_unless(!ret);
ih = (struct ip_hdr *)p->payload;
memset(ih, 0, sizeof(*ih));
ih->dest.addr = dst_addr;
ih->_len = lwip_htons(p->tot_len);
ih->_ttl = 32;
ih->_proto = IP_PROTO_UDP;
IPH_VHL_SET(ih, 4, sizeof(struct ip_hdr) / 4);
IPH_CHKSUM_SET(ih, inet_chksum(ih, sizeof(struct ip_hdr)));
return p;
}
/* bind 2 pcbs to specific netif IP and test which one gets broadcasts */
START_TEST(test_udp_broadcast_rx_with_2_netifs)
{
err_t err;
struct udp_pcb *pcb1, *pcb2;
const u16_t port = 12345;
struct test_udp_rxdata ctr1, ctr2;
struct pbuf *p;
#if SO_REUSE
struct udp_pcb *pcb_any;
struct test_udp_rxdata ctr_any;
#endif
LWIP_UNUSED_ARG(_i);
pcb1 = udp_new();
fail_unless(pcb1 != NULL);
pcb2 = udp_new();
fail_unless(pcb2 != NULL);
#if SO_REUSE
pcb_any = udp_new();
fail_unless(pcb_any != NULL);
ip_set_option(pcb1, SOF_REUSEADDR);
ip_set_option(pcb2, SOF_REUSEADDR);
ip_set_option(pcb_any, SOF_REUSEADDR);
err = udp_bind(pcb_any, NULL, port);
fail_unless(err == ERR_OK);
memset(&ctr_any, 0, sizeof(ctr_any));
ctr_any.pcb = pcb_any;
udp_recv(pcb_any, test_recv, &ctr_any);
#endif
err = udp_bind(pcb1, &test_netif1.ip_addr, port);
fail_unless(err == ERR_OK);
err = udp_bind(pcb2, &test_netif2.ip_addr, port);
fail_unless(err == ERR_OK);
memset(&ctr1, 0, sizeof(ctr1));
ctr1.pcb = pcb1;
memset(&ctr2, 0, sizeof(ctr2));
ctr2.pcb = pcb2;
udp_recv(pcb1, test_recv, &ctr1);
udp_recv(pcb2, test_recv, &ctr2);
/* unicast to netif1 */
p = test_udp_create_test_packet(16, port, test_ipaddr1.addr);
EXPECT_RET(p != NULL);
err = ip4_input(p, &test_netif1);
fail_unless(err == ERR_OK);
fail_unless(ctr1.rx_cnt == 1);
fail_unless(ctr1.rx_bytes == 16);
fail_unless(ctr2.rx_cnt == 0);
#if SO_REUSE
fail_unless(ctr_any.rx_cnt == 0);
#endif
ctr1.rx_cnt = ctr1.rx_bytes = 0;
/* unicast to netif2 */
p = test_udp_create_test_packet(16, port, test_ipaddr2.addr);
EXPECT_RET(p != NULL);
err = ip4_input(p, &test_netif2);
fail_unless(err == ERR_OK);
fail_unless(ctr2.rx_cnt == 1);
fail_unless(ctr2.rx_bytes == 16);
fail_unless(ctr1.rx_cnt == 0);
#if SO_REUSE
fail_unless(ctr_any.rx_cnt == 0);
#endif
ctr2.rx_cnt = ctr2.rx_bytes = 0;
/* broadcast to netif1-broadcast, input to netif2 */
p = test_udp_create_test_packet(16, port, test_ipaddr1.addr | ~test_netmask1.addr);
EXPECT_RET(p != NULL);
err = ip4_input(p, &test_netif2);
fail_unless(err == ERR_OK);
fail_unless(ctr1.rx_cnt == 1);
fail_unless(ctr1.rx_bytes == 16);
fail_unless(ctr2.rx_cnt == 0);
#if SO_REUSE
fail_unless(ctr_any.rx_cnt == 0);
#endif
ctr1.rx_cnt = ctr1.rx_bytes = 0;
/* broadcast to netif2-broadcast, input to netif1 */
p = test_udp_create_test_packet(16, port, test_ipaddr2.addr | ~test_netmask2.addr);
EXPECT_RET(p != NULL);
err = ip4_input(p, &test_netif1);
fail_unless(err == ERR_OK);
fail_unless(ctr2.rx_cnt == 1);
fail_unless(ctr2.rx_bytes == 16);
fail_unless(ctr1.rx_cnt == 0);
#if SO_REUSE
fail_unless(ctr_any.rx_cnt == 0);
#endif
ctr2.rx_cnt = ctr2.rx_bytes = 0;
/* broadcast to global-broadcast, input to netif1 */
p = test_udp_create_test_packet(16, port, 0xffffffff);
EXPECT_RET(p != NULL);
err = ip4_input(p, &test_netif1);
fail_unless(err == ERR_OK);
fail_unless(ctr1.rx_cnt == 1);
fail_unless(ctr1.rx_bytes == 16);
fail_unless(ctr2.rx_cnt == 0);
#if SO_REUSE
fail_unless(ctr_any.rx_cnt == 0);
#endif
ctr1.rx_cnt = ctr1.rx_bytes = 0;
/* broadcast to global-broadcast, input to netif2 */
p = test_udp_create_test_packet(16, port, 0xffffffff);
EXPECT_RET(p != NULL);
err = ip4_input(p, &test_netif2);
fail_unless(err == ERR_OK);
fail_unless(ctr2.rx_cnt == 1);
fail_unless(ctr2.rx_bytes == 16);
fail_unless(ctr1.rx_cnt == 0);
#if SO_REUSE
fail_unless(ctr_any.rx_cnt == 0);
#endif
ctr2.rx_cnt = ctr2.rx_bytes = 0;
}
END_TEST
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/** Create the suite including all tests for this module */
Suite *
udp_suite(void)
{
testfunc tests[] = {
TESTFUNC(test_udp_new_remove),
TESTFUNC(test_udp_broadcast_rx_with_2_netifs)
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};
return create_suite("UDP", tests, sizeof(tests)/sizeof(testfunc), udp_setup, udp_teardown);
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}