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ip4: Verify ipv4 fragmentation sends all chunks right away

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Ahead of investigation how ipv6 code behaves.
This commit is contained in:
Erik Ekman 2020-07-01 19:39:43 +02:00
parent 2faa2d7009
commit 0bda621d3d
1 changed files with 29 additions and 0 deletions
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29
test/unit/ip4/test_ip4.c
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@ -16,6 +16,7 @@
static struct netif test_netif; static struct netif test_netif;
static ip4_addr_t test_ipaddr, test_netmask, test_gw; static ip4_addr_t test_ipaddr, test_netmask, test_gw;
static int linkoutput_ctr; static int linkoutput_ctr;
static int linkoutput_byte_ctr;
/* reference internal lwip variable in netif.c */ /* reference internal lwip variable in netif.c */
@ -25,6 +26,7 @@ test_netif_linkoutput(struct netif *netif, struct pbuf *p)
fail_unless(netif == &test_netif); fail_unless(netif == &test_netif);
fail_unless(p != NULL); fail_unless(p != NULL);
linkoutput_ctr++; linkoutput_ctr++;
linkoutput_byte_ctr += p->tot_len;
return ERR_OK; return ERR_OK;
} }
@ -102,6 +104,12 @@ create_ip4_input_fragment(u16_t ip_id, u16_t start, u16_t len, int last)
} }
} }
static err_t arpless_output(struct netif *netif, struct pbuf *p,
const ip4_addr_t *ipaddr) {
LWIP_UNUSED_ARG(ipaddr);
return netif->linkoutput(netif, p);
}
/* Setups/teardown functions */ /* Setups/teardown functions */
static void static void
@ -126,6 +134,26 @@ ip4_teardown(void)
} }
/* Test functions */ /* Test functions */
START_TEST(test_ip4_frag)
{
struct pbuf *data = pbuf_alloc(PBUF_IP, 8000, PBUF_RAM);
ip_addr_t peer_ip = IPADDR4_INIT_BYTES(192,168,0,5);
err_t err;
LWIP_UNUSED_ARG(_i);
/* Verify that 8000 byte payload is split into six packets */
fail_unless(data != NULL);
test_netif_add();
test_netif.output = arpless_output;
err = ip4_output_if_src(data, &test_ipaddr, ip_2_ip4(&peer_ip),
16, 0, IP_PROTO_UDP, &test_netif);
fail_unless(err == ERR_OK);
fail_unless(linkoutput_ctr == 6);
fail_unless(linkoutput_byte_ctr == (8000 + (6 * IP_HLEN)));
pbuf_free(data);
test_netif_remove();
}
START_TEST(test_ip4_reass) START_TEST(test_ip4_reass)
{ {
const u16_t ip_id = 128; const u16_t ip_id = 128;
@ -240,6 +268,7 @@ Suite *
ip4_suite(void) ip4_suite(void)
{ {
testfunc tests[] = { testfunc tests[] = {
TESTFUNC(test_ip4_frag),
TESTFUNC(test_ip4_reass), TESTFUNC(test_ip4_reass),
TESTFUNC(test_127_0_0_1), TESTFUNC(test_127_0_0_1),
TESTFUNC(test_ip4addr_aton), TESTFUNC(test_ip4addr_aton),