From ec5f3a15631f9c025380baf8cf6c63834c4dbcc4 Mon Sep 17 00:00:00 2001 From: Erik Ekman Date: Wed, 1 Jul 2020 20:17:29 +0200 Subject: [PATCH] ip6: Add ipv6 fragmentation test Seems to work the same as ipv4, and that I was just confused by all the loops when reading the code. --- test/unit/ip6/test_ip6.c | 39 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 38 insertions(+), 1 deletion(-) diff --git a/test/unit/ip6/test_ip6.c b/test/unit/ip6/test_ip6.c index a68e3800..55637ca8 100644 --- a/test/unit/ip6/test_ip6.c +++ b/test/unit/ip6/test_ip6.c @@ -16,6 +16,7 @@ static struct netif test_netif6; static int linkoutput_ctr; +static int linkoutput_byte_ctr; static err_t default_netif_linkoutput(struct netif *netif, struct pbuf *p) @@ -23,6 +24,7 @@ default_netif_linkoutput(struct netif *netif, struct pbuf *p) fail_unless(netif == &test_netif6); fail_unless(p != NULL); linkoutput_ctr++; + linkoutput_byte_ctr += p->tot_len; return ERR_OK; } @@ -390,6 +392,40 @@ START_TEST(test_ip6_frag_pbuf_len_assert) } END_TEST +static err_t direct_output(struct netif *netif, struct pbuf *p, const ip6_addr_t *addr) { + LWIP_UNUSED_ARG(addr); + return netif->linkoutput(netif, p); +} + +START_TEST(test_ip6_frag) +{ + ip_addr_t my_addr = IPADDR6_INIT_HOST(0x20010db8, 0x0, 0x0, 0x1); + ip_addr_t peer_addr = IPADDR6_INIT_HOST(0x20010db8, 0x0, 0x0, 0x4); + struct pbuf *data; + err_t err; + + /* Configure and enable local address */ + test_netif6.mtu = 1500; + netif_set_up(&test_netif6); + netif_ip6_addr_set(&test_netif6, 0, ip_2_ip6(&my_addr)); + netif_ip6_addr_set_state(&test_netif6, 0, IP6_ADDR_VALID); + test_netif6.output_ip6 = direct_output; + /* Reset counters after multicast traffic */ + linkoutput_ctr = 0; + linkoutput_byte_ctr = 0; + + /* Verify that 8000 byte payload is split into six packets */ + data = pbuf_alloc(PBUF_IP, 8000, PBUF_RAM); + fail_unless(data != NULL); + err = ip6_output_if_src(data, ip_2_ip6(&my_addr), ip_2_ip6(&peer_addr), + 15, 0, IP_PROTO_UDP, &test_netif6); + fail_unless(err == ERR_OK); + fail_unless(linkoutput_ctr == 6); + fail_unless(linkoutput_byte_ctr == (8000 + (6 * (IP6_HLEN + IP6_FRAG_HLEN)))); + pbuf_free(data); +} +END_TEST + /** Create the suite including all tests for this module */ Suite * ip6_suite(void) @@ -401,7 +437,8 @@ ip6_suite(void) TESTFUNC(test_ip6_ntoa), TESTFUNC(test_ip6_lladdr), TESTFUNC(test_ip6_dest_unreachable_chained_pbuf), - TESTFUNC(test_ip6_frag_pbuf_len_assert) + TESTFUNC(test_ip6_frag_pbuf_len_assert), + TESTFUNC(test_ip6_frag) }; return create_suite("IPv6", tests, sizeof(tests)/sizeof(testfunc), ip6_setup, ip6_teardown); }