/* * Copyright (C) 2019 Freie Universität Berlin * * This file is subject to the terms and conditions of the GNU Lesser * General Public License v2.1. See the file LICENSE in the top level * directory for more details. */ /** * @ingroup tests * @{ * * @file * @brief Tests 6LoWPAN minimal forwarding * * @author Martine Lenders * * @} */ #include #include #include "cib.h" #include "common.h" #include "embUnit.h" #include "embUnit/embUnit.h" #include "mutex.h" #include "net/ipv6.h" #include "net/gnrc.h" #include "net/gnrc/ipv6/nib.h" #include "net/gnrc/ipv6/nib/nc.h" #include "net/gnrc/ipv6/nib/ft.h" #include "net/gnrc/sixlowpan/frag.h" #include "net/gnrc/sixlowpan/frag/rb.h" #include "net/gnrc/sixlowpan/frag/minfwd.h" #include "net/gnrc/sixlowpan/iphc.h" #include "net/netdev_test.h" /* for debugging _target_buf */ #include "od.h" #include "utlist.h" #include "xtimer.h" #define SEND_PACKET_TIMEOUT (500U) #define LOC_L2 { _LL0, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 } #define LOC_LL { 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 \ } #define LOC_GB { 0x20, 0x01, 0x0d, 0xb8, 0xd3, 0x35, 0x91, 0x7e, \ _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 \ } #define REM_L2 { _LL0, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 + 1 } #define REM_LL { 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 + 1 \ } #define REM_GB { 0x20, 0x01, 0x0d, 0xb8, 0xd3, 0x35, 0x91, 0x7e, \ _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 + 1 \ } #define LOC_GB_PFX_LEN (64U) #define REM_GB_PFX_LEN (64U) #define TEST_1ST_FRAG_UNCOMP_SIZE (80U) #define TEST_1ST_FRAG_UNCOMP_PAYLOAD_POS (4U) #define TEST_1ST_FRAG_UNCOMP_IPV6_HDR_POS (5U) #define TEST_1ST_FRAG_UNCOMP_IPV6_PAYLOAD_SIZE (40U) #define TEST_1ST_FRAG_UNCOMP_IPV6_PAYLOAD_POS (45U) #define TEST_1ST_FRAG_UNCOMP_UDP_PAYLOAD_SIZE (32U) #define TEST_1ST_FRAG_UNCOMP_UDP_PAYLOAD_POS (53U) #define TEST_1ST_FRAG_COMP_FRAG_SIZE (80U) #define TEST_1ST_FRAG_COMP_ONLY_IPHC_FRAG_SIZE (48U) #define TEST_1ST_FRAG_COMP_SIZE (38U) #define TEST_1ST_FRAG_COMP_PAYLOAD_POS (4U) #define TEST_1ST_FRAG_COMP_EXP_OFFSET (6U) #define TEST_1ST_FRAG_COMP_PREV_HOP_UDP_PAYLOAD_POS (43U) #define TEST_NTH_FRAG_SIZE (32U) #define TEST_NTH_FRAG_OFFSET_POS (4U) #define TEST_NTH_FRAG_PAYLOAD_POS (5U) #define TEST_SEND_DATAGRAM_SIZE (148U) #define TEST_SEND_DATAGRAM_TAG (0x22ddU) #define TEST_SEND_LL_PAYLOAD_POS (4U) #define TEST_SEND_LL_PAYLOAD_SIZE (7U) #define TEST_SEND_FRAG1_PAYLOAD_POS (4U) #define TEST_SEND_FRAG1_PAYLOAD_SIZE (35U) #define TEST_SEND_FRAG1_SIZE (40U) #define TEST_SEND_FRAG2_OFFSET_POS (4U) #define TEST_SEND_FRAG2_OFFSET (5U) #define TEST_SEND_FRAG2_PAYLOAD_POS (5U) #define TEST_SEND_FRAG2_PAYLOAD_SIZE (96U) #define TEST_SEND_FRAG3_OFFSET_POS (4U) #define TEST_SEND_FRAG3_OFFSET (17U) #define TEST_SEND_FRAG3_PAYLOAD_POS (5U) #define TEST_SEND_FRAG3_PAYLOAD_SIZE (12U) enum { FIRST_FRAGMENT = 0, FIRST_FRAGMENT_REST, NTH_FRAGMENT }; static const uint8_t _test_1st_frag_uncomp[] = { 0xc4, 0xd0, /* 1st fragment | datagram size: 1232 */ 0x67, 0x9d, /* tag: 0x679d */ 0x41, /* uncompressed IPv6 */ /* IPv6 header: payload length = 1192, * next header = UDP (17), hop limit = 65 */ 0x60, 0x00, 0x00, 0x00, 0x04, 0xa8, 0x11, 0x41, /* Source: 2001:db8:d6c3:acf:dc71:2b85:82f:75fb */ 0x20, 0x01, 0x0d, 0xb8, 0xd6, 0xc3, 0x0a, 0xcf, 0xdc, 0x71, 0x2b, 0x85, 0x08, 0x2f, 0x75, 0xfb, /* Destination: REM_GB */ 0x20, 0x01, 0x0d, 0xb8, 0xd3, 0x35, 0x91, 0x7e, _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 + 1, /* UDP source: 0xf0b4, UDP destination: 0xf0ba, * length: 1192, (random) checksum: 0x47b8 */ 0xf0, 0xb4, 0xf0, 0xba, 0x04, 0xa8, 0x47, 0xb8, /* (random) payload of length 32 */ 0xba, 0xb3, 0x6e, 0x4f, 0xd8, 0x23, 0x40, 0xf3, 0xfb, 0xb9, 0x05, 0xbf, 0xbe, 0x19, 0xf6, 0xa2, 0xc7, 0x6e, 0x09, 0xf9, 0xba, 0x70, 0x3a, 0x38, 0xd5, 0x2f, 0x08, 0x85, 0xb8, 0xc1, 0x1a, 0x31, }; static const uint8_t _test_1st_frag_comp[] = { 0xc4, 0xd0, /* 1st fragment | datagram size: 1232 */ 0x67, 0x9d, /* tag: 0x679d */ /* IPHC: TF: 0b11, NH: 0b1 (NHC), HLIM: 0b10 (64), CID: 0b0, * Source: uncompressed (SAC: 0b0, SAM: 0b00), * Destination: uncompressed (M:0, DAC: 0b0, DAM: 0b00) */ 0x7e, 0x00, /* (uncompressed) Source: 2001:db8:d6c3:acf:dc71:2b85:82f:75fb */ 0x20, 0x01, 0x0d, 0xb8, 0xd6, 0xc3, 0x0a, 0xcf, 0xdc, 0x71, 0x2b, 0x85, 0x08, 0x2f, 0x75, 0xfb, /* (uncompressed) Destination: REM_GB */ 0x20, 0x01, 0x0d, 0xb8, 0xd3, 0x35, 0x91, 0x7e, _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 + 1, /* NHC UDP: ports: 0b11 (12 bytes elided), (random) Checksum inline */ 0xf3, 0x4a, 0x47, 0xb8, }; static const uint8_t _test_1st_frag_comp_prev_hop[] = { 0xc4, 0xd0, /* 1st fragment | datagram size: 1232 */ 0x67, 0x9d, /* tag: 0x679d */ /* IPHC: TF: 0b11, NH: 0b1 (NHC), HLIM: 0b00 (inline), CID: 0b0, * Source: uncompressed (SAC: 0b0, SAM: 0b00), * Destination: uncompressed (M:0, DAC: 0b0, DAM: 0b00) */ 0x7c, 0x00, /* Hop Limit: 65 */ 0x41, /* (uncompressed) Source: 2001:db8:d6c3:acf:dc71:2b85:82f:75fb */ 0x20, 0x01, 0x0d, 0xb8, 0xd6, 0xc3, 0x0a, 0xcf, 0xdc, 0x71, 0x2b, 0x85, 0x08, 0x2f, 0x75, 0xfb, /* (uncompressed) Destination: REM_GB */ 0x20, 0x01, 0x0d, 0xb8, 0xd3, 0x35, 0x91, 0x7e, _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 + 1, /* NHC UDP: ports: 0b11 (12 bytes elided), (random) Checksum inline */ 0xf3, 0x4a, 0x47, 0xb8, /* (random) payload of length 32 */ 0xba, 0xb3, 0x6e, 0x4f, 0xd8, 0x23, 0x40, 0xf3, 0xfb, 0xb9, 0x05, 0xbf, 0xbe, 0x19, 0xf6, 0xa2, 0xc7, 0x6e, 0x09, 0xf9, 0xba, 0x70, 0x3a, 0x38, 0xd5, 0x2f, 0x08, 0x85, 0xb8, 0xc1, 0x1a, 0x31, }; static const uint8_t _test_nth_frag[] = { 0xe4, 0xd0, /* n-th fragment | datagram size: 1232 */ 0x67, 0x9d, /* tag: 0x679d */ 0x96, /* offset: 1200 (divided by 8) */ /* payload of length 32 */ 0x54, 0x26, 0x63, 0xab, 0x31, 0x0b, 0xa4, 0x4e, 0x6e, 0xa9, 0x09, 0x02, 0x15, 0xbb, 0x24, 0xa9, 0x56, 0x44, 0x4a, 0x84, 0xd1, 0x83, 0xb9, 0xdb, 0x0e, 0x0d, 0xd6, 0x6a, 0x83, 0x31, 0x1d, 0x94, }; static const uint8_t _test_send_ipv6[] = { /* IPv6 header: payload length = 108, * next header = ICMPv6 (58), hop limit = 64 */ 0x60, 0x00, 0x00, 0x00, 0x00, 0x6c, 0x3a, 0x40, /* Source: LOC_GB */ 0x20, 0x01, 0x0d, 0xb8, 0xd3, 0x35, 0x91, 0x7e, _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7, /* Destination: REM_GB */ 0x20, 0x01, 0x0d, 0xb8, 0xd3, 0x35, 0x91, 0x7e, _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 + 1, }; static const uint8_t _test_send_icmpv6[] = { /* ICMPv6 Echo request (128), Code 0, (Random) checksum: 0x7269, * random identifier: 0x59be, random sequence number: 15804 */ 0x80, 0x00, 0x72, 0x69, 0x59, 0xbe, 0x3d, 0xbc, /* random payload */ 0x49, 0x19, 0xe8, 0x0b, 0x25, 0xbb, 0x00, 0x13, 0x45, 0x85, 0xbd, 0x4a, 0xbb, 0xf1, 0x3d, 0xe3, 0x36, 0xff, 0x52, 0xea, 0xe8, 0xec, 0xec, 0x82, 0x94, 0x5f, 0xa4, 0x30, 0x1f, 0x46, 0x28, 0xc7, 0x41, 0xff, 0x50, 0x84, 0x00, 0x41, 0xc7, 0x8d, 0xb0, 0xdc, 0x18, 0xff, 0xcd, 0xfa, 0xa7, 0x72, 0x4b, 0xcf, 0x7c, 0xf7, 0x7c, 0x8b, 0x65, 0x78, 0xb0, 0xa8, 0xe7, 0x8f, 0xbc, 0x1e, 0xba, 0x4a, 0x92, 0x13, 0x81, 0x5e, 0x23, 0xd1, 0xde, 0x09, 0x84, 0x8a, 0xd0, 0xe2, 0xdd, 0x01, 0xc8, 0xd7, 0x08, 0x4c, 0xd8, 0xc2, 0x21, 0x5c, 0x21, 0xb9, 0x43, 0xea, 0x52, 0xbd, 0x6a, 0x9a, 0xac, 0x48, 0x94, 0x98, 0xd1, 0x95 }; static const uint8_t _test_send_ll[] = { 0xc0, 0x94, /* 1st fragment | datagram size: TEST_SEND_DATAGRAM_SIZE */ 0x22, 0xdd, /* tag: TEST_SEND_DATAGRAM_TAG */ /* IPHC: TF: 0b11, NH: 0b0 (inline), HLIM: 0b10 (64), CID: 0b0, * Source: uncompressed (SAC: 0b0, SAM: 0b11), * Destination: uncompressed (M:0, DAC: 0b0, DAM: 0b11) */ 0x7a, 0x33, /* Next header: ICMPv6 (58) */ 0x3a, }; static const uint8_t _test_send_frag1_prev_hop[] = { 0xc0, 0x94, /* 1st fragment | datagram size: TEST_SEND_DATAGRAM_SIZE */ 0x67, 0x9d, /* tag: 0x679d */ /* IPHC: TF: 0b11, NH: 0b0 (inline), HLIM: 0b00 (inline), CID: 0b0, * Source: uncompressed (SAC: 0b0, SAM: 0b00), * Destination: uncompressed (M:0, DAC: 0b0, DAM: 0b00) */ 0x78, 0x00, /* Next header: ICMPv6 (58), Hop Limit: 65 */ 0x3a, 0x41, /* (uncompressed) Source: LOC_GB */ 0x20, 0x01, 0x0d, 0xb8, 0xd3, 0x35, 0x91, 0x7e, _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7, /* (uncompressed) Destination: REM_GB */ 0x20, 0x01, 0x0d, 0xb8, 0xd3, 0x35, 0x91, 0x7e, _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 + 1, }; static const uint8_t _test_send_frag1[] = { 0xc0, 0x94, /* 1st fragment | datagram size: TEST_SEND_DATAGRAM_SIZE */ 0x22, 0xdd, /* tag: TEST_SEND_DATAGRAM_TAG */ /* IPHC: TF: 0b11, NH: 0b0 (inline), HLIM: 0b10 (64), CID: 0b0, * Source: uncompressed (SAC: 0b0, SAM: 0b00), * Destination: uncompressed (M:0, DAC: 0b0, DAM: 0b00) */ 0x7a, 0x00, /* Next header: ICMPv6 (58) */ 0x3a, /* (uncompressed) Source: LOC_GB */ 0x20, 0x01, 0x0d, 0xb8, 0xd3, 0x35, 0x91, 0x7e, _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7, /* (uncompressed) Destination: REM_GB */ 0x20, 0x01, 0x0d, 0xb8, 0xd3, 0x35, 0x91, 0x7e, _LL0 ^ 0x2, _LL1, _LL2, _LL3, _LL4, _LL5, _LL6, _LL7 + 1, }; static const uint8_t _test_send_frag2[] = { 0xe0, 0x94, /* nth fragment | datagram size: TEST_SEND_DATAGRAM_SIZE */ 0x22, 0xdd, /* tag: TEST_SEND_DATAGRAM_TAG */ 0x05, /* offset: 40 (divided by 8) */ 0x80, 0x00, 0x72, 0x69, 0x59, 0xbe, 0x3d, 0xbc, 0x49, 0x19, 0xe8, 0x0b, 0x25, 0xbb, 0x00, 0x13, 0x45, 0x85, 0xbd, 0x4a, 0xbb, 0xf1, 0x3d, 0xe3, 0x36, 0xff, 0x52, 0xea, 0xe8, 0xec, 0xec, 0x82, 0x94, 0x5f, 0xa4, 0x30, 0x1f, 0x46, 0x28, 0xc7, 0x41, 0xff, 0x50, 0x84, 0x00, 0x41, 0xc7, 0x8d, 0xb0, 0xdc, 0x18, 0xff, 0xcd, 0xfa, 0xa7, 0x72, 0x4b, 0xcf, 0x7c, 0xf7, 0x7c, 0x8b, 0x65, 0x78, 0xb0, 0xa8, 0xe7, 0x8f, 0xbc, 0x1e, 0xba, 0x4a, 0x92, 0x13, 0x81, 0x5e, 0x23, 0xd1, 0xde, 0x09, 0x84, 0x8a, 0xd0, 0xe2, 0xdd, 0x01, 0xc8, 0xd7, 0x08, 0x4c, 0xd8, 0xc2, 0x21, 0x5c, 0x21, 0xb9, }; static const uint8_t _test_send_frag3[] = { 0xe0, 0x94, /* nth fragment | datagram size: TEST_ASSERT_EQUAL_INT */ 0x22, 0xdd, /* tag: TEST_SEND_DATAGRAM_TAG */ 0x11, /* offset: 136 (divided by 8) */ 0x43, 0xea, 0x52, 0xbd, 0x6a, 0x9a, 0xac, 0x48, 0x94, 0x98, 0xd1, 0x95 }; static const ipv6_addr_t _rem_ll = { .u8 = REM_LL }; static const ipv6_addr_t _rem_gb = { .u8 = REM_GB }; static const uint8_t _rem_l2[] = REM_L2; static const gnrc_sixlowpan_frag_rb_base_t _vrbe_base = { .src = { 0xde, 0x71, 0x2b, 0x85, 0x08, 0x2f, 0x75, 0xfb }, .src_len = IEEE802154_LONG_ADDRESS_LEN, .dst = LOC_L2, .dst_len = IEEE802154_LONG_ADDRESS_LEN, .tag = 0x679d, .datagram_size = 1232U, .current_size = 0U, }; static uint8_t _target_buf[128U]; static uint8_t _target_buf_len; /* to protect _target_buf and _target_buf_len */ /* to wait for new data in _target_buf */ static mutex_t _target_buf_filled = MUTEX_INIT_LOCKED; static mutex_t _target_buf_barrier = MUTEX_INIT; static gnrc_pktsnip_t *_create_ipv6_hdr(const ipv6_hdr_t *hdr); static gnrc_pktsnip_t *_create_recv_frag(const void *frag_data, size_t frag_size); static int _set_route_and_nce(const ipv6_addr_t *route, unsigned pfx_len); static gnrc_pktsnip_t *_create_send_datagram(bool compressed, bool payload); static size_t _wait_for_packet(size_t exp_size); static void _check_vrbe_values(gnrc_sixlowpan_frag_vrb_t *vrbe, size_t mhr_len, int frag_type); static void _check_1st_frag_uncomp(size_t mhr_len, uint8_t exp_hl_diff); static void _check_send_frag1(size_t mhr_len, bool check_tag); static void _check_send_frag2(size_t mhr_len, bool check_tag); static void _check_send_frag3(size_t mhr_len, bool check_tag); static const gnrc_sixlowpan_frag_rb_t *_first_non_empty_rbuf(void); static int _mock_netdev_send(netdev_t *dev, const iolist_t *iolist); static void _set_up(void) { /* reset data-structures */ gnrc_sixlowpan_frag_rb_reset(); gnrc_sixlowpan_frag_vrb_reset(); gnrc_pktbuf_init(); memset(_mock_netif->ipv6.addrs, 0, sizeof(_mock_netif->ipv6.addrs)); memset(_mock_netif->ipv6.addrs_flags, 0, sizeof(_mock_netif->ipv6.addrs_flags)); gnrc_ipv6_nib_init(); gnrc_ipv6_nib_init_iface(_mock_netif); gnrc_ipv6_nib_iface_up(_mock_netif); /* re-init for syncing */ mutex_init(&_target_buf_filled); mutex_lock(&_target_buf_filled); mutex_init(&_target_buf_barrier); } static void _tear_down(void) { netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, NULL); mutex_unlock(&_target_buf_barrier); /* wait in case mutex in _mock_netdev_send was already entered */ mutex_lock(&_target_buf_barrier); memset(_target_buf, 0, sizeof(_target_buf)); _target_buf_len = 0; mutex_unlock(&_target_buf_barrier); } static void test_minfwd_vrbe_from_route__success__given_netif(void) { gnrc_sixlowpan_frag_vrb_t *vrbe; static gnrc_pktsnip_t *ipv6_snip; static const ipv6_hdr_t ipv6_hdr = { .dst = { .u8 = REM_GB } }; TEST_ASSERT_EQUAL_INT(0, _set_route_and_nce(&ipv6_hdr.dst, REM_GB_PFX_LEN)); TEST_ASSERT_NOT_NULL((ipv6_snip = _create_ipv6_hdr(&ipv6_hdr))); TEST_ASSERT_NOT_NULL((vrbe = gnrc_sixlowpan_frag_vrb_from_route( &_vrbe_base, _mock_netif, ipv6_snip))); gnrc_pktbuf_release(ipv6_snip); TEST_ASSERT_EQUAL_INT(_vrbe_base.current_size, vrbe->super.current_size); TEST_ASSERT(_mock_netif == vrbe->out_netif); TEST_ASSERT_EQUAL_INT(sizeof(_rem_l2), vrbe->super.dst_len); TEST_ASSERT_MESSAGE(memcmp(_rem_l2, vrbe->super.dst, sizeof(_rem_l2)) == 0, "_rem_l2 != vrbe->super.dst"); } static void test_minfwd_vrbe_from_route__success__no_netif(void) { gnrc_sixlowpan_frag_vrb_t *vrbe; static gnrc_pktsnip_t *ipv6_snip; static const ipv6_hdr_t ipv6_hdr = { .dst = { .u8 = REM_GB } }; TEST_ASSERT_EQUAL_INT(0, _set_route_and_nce(&ipv6_hdr.dst, REM_GB_PFX_LEN)); TEST_ASSERT_NOT_NULL((ipv6_snip = _create_ipv6_hdr(&ipv6_hdr))); TEST_ASSERT_NOT_NULL((vrbe = gnrc_sixlowpan_frag_vrb_from_route( &_vrbe_base, NULL, ipv6_snip))); gnrc_pktbuf_release(ipv6_snip); TEST_ASSERT_EQUAL_INT(_vrbe_base.current_size, vrbe->super.current_size); TEST_ASSERT(_mock_netif == vrbe->out_netif); TEST_ASSERT_EQUAL_INT(sizeof(_rem_l2), vrbe->super.dst_len); TEST_ASSERT_MESSAGE(memcmp(_rem_l2, vrbe->super.dst, sizeof(_rem_l2)) == 0, "_rem_l2 != vrbe->super.dst"); } static void test_minfwd_vrbe_from_route__no_route1(void) { static gnrc_pktsnip_t *ipv6_snip; static const ipv6_hdr_t ipv6_hdr = { .dst = { .u8 = REM_GB } }; TEST_ASSERT_NOT_NULL((ipv6_snip = _create_ipv6_hdr(&ipv6_hdr))); TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_from_route( &_vrbe_base, NULL, ipv6_snip)); gnrc_pktbuf_release(ipv6_snip); } static void test_minfwd_vrbe_from_route__no_route2(void) { static gnrc_pktsnip_t *snip; /* fantasy header */ static const uint8_t hdr[] = { 0x40, 0xa9, 0xf4, 0xde, 0x6c, 0x87, 0x50, 0x9a, 0x54, 0x1f, 0x79, 0xde, 0x6e, 0xd2, 0xb0, 0x82, 0x5c, 0x16, 0xdc, 0xd7 }; TEST_ASSERT_NOT_NULL((snip = gnrc_pktbuf_add(NULL, hdr, sizeof(hdr), GNRC_NETTYPE_TEST))); TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_from_route(&_vrbe_base, NULL, snip)); gnrc_pktbuf_release(snip); } static void test_minfwd_vrbe_from_route__local_addr(void) { static gnrc_pktsnip_t *ipv6_snip; static ipv6_hdr_t ipv6_hdr = { .dst = { .u8 = LOC_GB } }; /* add address to interface */ TEST_ASSERT_EQUAL_INT( sizeof(ipv6_addr_t), gnrc_netif_ipv6_addr_add(_mock_netif, &ipv6_hdr.dst, LOC_GB_PFX_LEN, GNRC_NETIF_IPV6_ADDRS_FLAGS_STATE_VALID) ); TEST_ASSERT_NOT_NULL((ipv6_snip = _create_ipv6_hdr(&ipv6_hdr))); TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_from_route( &_vrbe_base, NULL, ipv6_snip)); gnrc_pktbuf_release(ipv6_snip); } static void test_minfwd_vrbe_from_route__vrb_full(void) { static gnrc_pktsnip_t *ipv6_snip; static ipv6_hdr_t ipv6_hdr = { .dst = { .u8 = REM_GB } }; gnrc_sixlowpan_frag_rb_base_t base = _vrbe_base; TEST_ASSERT_EQUAL_INT(0, _set_route_and_nce(&ipv6_hdr.dst, REM_GB_PFX_LEN)); /* fill up VRB */ for (unsigned i = 0; i < CONFIG_GNRC_SIXLOWPAN_FRAG_VRB_SIZE; i++) { base.arrival = xtimer_now_usec(); TEST_ASSERT_NOT_NULL(gnrc_sixlowpan_frag_vrb_add(&base, _mock_netif, _rem_l2, sizeof(_rem_l2))); base.tag++; } TEST_ASSERT_NOT_NULL((ipv6_snip = _create_ipv6_hdr(&ipv6_hdr))); TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_from_route( &base, NULL, ipv6_snip)); gnrc_pktbuf_release(ipv6_snip); } static void test_minfwd_forward__success__1st_frag_sixlo(void) { gnrc_sixlowpan_frag_vrb_t *vrbe = gnrc_sixlowpan_frag_vrb_add( &_vrbe_base, _mock_netif, _rem_l2, sizeof(_rem_l2) ); gnrc_pktsnip_t *pkt, *frag; size_t mhr_len; vrbe->super.arrival = xtimer_now_usec(); TEST_ASSERT_NOT_NULL((pkt = gnrc_pktbuf_add(NULL, _test_1st_frag_uncomp, sizeof(_test_1st_frag_uncomp), GNRC_NETTYPE_SIXLOWPAN))); /* separate fragment header from payload */ TEST_ASSERT_NOT_NULL((frag = gnrc_pktbuf_mark(pkt, sizeof(sixlowpan_frag_t), GNRC_NETTYPE_SIXLOWPAN))); LL_DELETE(pkt, frag); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT_EQUAL_INT(0, gnrc_sixlowpan_frag_minfwd_forward(pkt, frag->data, vrbe, 0)); gnrc_pktbuf_release(frag); /* delete separated fragment header */ TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_1st_frag_uncomp)))); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); _check_vrbe_values(vrbe, mhr_len, FIRST_FRAGMENT); TEST_ASSERT(_target_buf[0] & IEEE802154_FCF_FRAME_PEND); _check_1st_frag_uncomp(mhr_len, 0U); /* VRB entry should not have been removed */ TEST_ASSERT_NOT_NULL(gnrc_sixlowpan_frag_vrb_get(_vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag)); } static void test_minfwd_forward__success__1st_frag_iphc(void) { gnrc_sixlowpan_frag_vrb_t *vrbe = gnrc_sixlowpan_frag_vrb_add( &_vrbe_base, _mock_netif, _rem_l2, sizeof(_rem_l2) ); gnrc_pktsnip_t *pkt, *frag; size_t mhr_len; vrbe->super.arrival = xtimer_now_usec(); TEST_ASSERT_NOT_NULL((pkt = gnrc_pktbuf_add(NULL, _test_1st_frag_comp, sizeof(_test_1st_frag_comp), GNRC_NETTYPE_SIXLOWPAN))); /* separate fragment header from payload */ TEST_ASSERT_NOT_NULL((frag = gnrc_pktbuf_mark(pkt, sizeof(sixlowpan_frag_t), GNRC_NETTYPE_SIXLOWPAN))); LL_DELETE(pkt, frag); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT_EQUAL_INT(0, gnrc_sixlowpan_frag_minfwd_forward(pkt, frag->data, vrbe, 0)); gnrc_pktbuf_release(frag); /* delete separated fragment header */ /* first wait and check IPHC part (we put some slack in the first fragment) */ TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_1st_frag_comp)))); _check_vrbe_values(vrbe, mhr_len, FIRST_FRAGMENT); TEST_ASSERT(_target_buf[0] & IEEE802154_FCF_FRAME_PEND); TEST_ASSERT_MESSAGE( memcmp(&_test_1st_frag_comp[TEST_1ST_FRAG_COMP_PAYLOAD_POS], &_target_buf[mhr_len + sizeof(sixlowpan_frag_t)], sizeof(_test_1st_frag_comp) - sizeof(sixlowpan_frag_t)) == 0, "unexpected IPHC header" ); /* VRB entry should not have been removed */ TEST_ASSERT_NOT_NULL(gnrc_sixlowpan_frag_vrb_get(_vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag)); } static void test_minfwd_forward__success__nth_frag_incomplete(void) { gnrc_sixlowpan_frag_vrb_t *vrbe = gnrc_sixlowpan_frag_vrb_add( &_vrbe_base, _mock_netif, _rem_l2, sizeof(_rem_l2) ); gnrc_pktsnip_t *pkt, *frag; size_t mhr_len; vrbe->super.arrival = xtimer_now_usec(); TEST_ASSERT_NOT_NULL((pkt = gnrc_pktbuf_add(NULL, _test_nth_frag, sizeof(_test_nth_frag), GNRC_NETTYPE_SIXLOWPAN))); /* separate fragment header from payload */ TEST_ASSERT_NOT_NULL((frag = gnrc_pktbuf_mark(pkt, sizeof(sixlowpan_frag_n_t), GNRC_NETTYPE_SIXLOWPAN))); LL_DELETE(pkt, frag); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT_EQUAL_INT(0, gnrc_sixlowpan_frag_minfwd_forward(pkt, frag->data, vrbe, 0)); gnrc_pktbuf_release(frag); /* delete separated fragment header */ TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_nth_frag)))); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); _check_vrbe_values(vrbe, mhr_len, NTH_FRAGMENT); TEST_ASSERT(_target_buf[0] & IEEE802154_FCF_FRAME_PEND); TEST_ASSERT_MESSAGE( memcmp(&_test_nth_frag[TEST_NTH_FRAG_PAYLOAD_POS], &_target_buf[mhr_len + sizeof(sixlowpan_frag_n_t)], TEST_NTH_FRAG_SIZE) == 0, "unexpected forwarded packet payload" ); /* VRB entry should not have been removed */ TEST_ASSERT_NOT_NULL(gnrc_sixlowpan_frag_vrb_get(_vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag)); } static void test_minfwd_forward__success__nth_frag_complete(void) { gnrc_sixlowpan_frag_vrb_t *vrbe = gnrc_sixlowpan_frag_vrb_add( &_vrbe_base, _mock_netif, _rem_l2, sizeof(_rem_l2) ); gnrc_pktsnip_t *pkt, *frag; vrbe->super.arrival = xtimer_now_usec(); TEST_ASSERT_NOT_NULL((pkt = gnrc_pktbuf_add(NULL, _test_nth_frag, sizeof(_test_nth_frag), GNRC_NETTYPE_SIXLOWPAN))); /* separate fragment header from payload */ TEST_ASSERT_NOT_NULL((frag = gnrc_pktbuf_mark(pkt, sizeof(sixlowpan_frag_n_t), GNRC_NETTYPE_SIXLOWPAN))); LL_DELETE(pkt, frag); /* simulate current_size only missing the created fragment */ vrbe->super.current_size = _vrbe_base.datagram_size; netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT_EQUAL_INT(0, gnrc_sixlowpan_frag_minfwd_forward(pkt, frag->data, vrbe, 0)); gnrc_pktbuf_release(frag); /* delete separated fragment header */ TEST_ASSERT(_wait_for_packet(sizeof(_test_nth_frag))); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); TEST_ASSERT(!(_target_buf[0] & IEEE802154_FCF_FRAME_PEND)); /* VRB entry should have been removed since * vrbe->super.current_size became vrbe->super.datagram_size */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get(_vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag)); } static void test_minfwd_forward__ENOMEM__netif_hdr_build_fail(void) { gnrc_sixlowpan_frag_vrb_t *vrbe = gnrc_sixlowpan_frag_vrb_add( &_vrbe_base, _mock_netif, _rem_l2, sizeof(_rem_l2) ); gnrc_pktsnip_t *pkt, *frag, *filled_space; vrbe->super.arrival = xtimer_now_usec(); TEST_ASSERT_NOT_NULL((filled_space = gnrc_pktbuf_add( NULL, NULL, /* 115U == 2 * sizeof(gnrc_pktsnip_t) + movement due to mark */ CONFIG_GNRC_PKTBUF_SIZE - sizeof(_test_nth_frag) - 115U, GNRC_NETTYPE_UNDEF ))); TEST_ASSERT_NOT_NULL((pkt = gnrc_pktbuf_add(NULL, _test_nth_frag, sizeof(_test_nth_frag), GNRC_NETTYPE_SIXLOWPAN))); /* separate fragment header from payload */ TEST_ASSERT_NOT_NULL((frag = gnrc_pktbuf_mark(pkt, sizeof(sixlowpan_frag_n_t), GNRC_NETTYPE_SIXLOWPAN))); LL_DELETE(pkt, frag); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT_EQUAL_INT(-ENOMEM, gnrc_sixlowpan_frag_minfwd_forward(pkt, frag->data, vrbe, 0)); gnrc_pktbuf_release(frag); /* delete separated fragment header */ gnrc_pktbuf_release(filled_space); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); } static void test_minfwd_frag_iphc__success(void) { gnrc_sixlowpan_frag_fb_t *fbuf; gnrc_pktsnip_t *pkt; size_t mhr_len; TEST_ASSERT_NOT_NULL((pkt = _create_send_datagram(true, true))); TEST_ASSERT_NOT_NULL((fbuf = gnrc_sixlowpan_frag_fb_get())); fbuf->datagram_size = TEST_SEND_DATAGRAM_SIZE; fbuf->tag = TEST_SEND_DATAGRAM_TAG; netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT_EQUAL_INT( 0, gnrc_sixlowpan_frag_minfwd_frag_iphc(pkt, TEST_SEND_DATAGRAM_SIZE, &_rem_gb, fbuf) ); TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_send_frag1)))); _check_send_frag1(mhr_len, true); TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_send_frag2)))); _check_send_frag2(mhr_len, true); TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_send_frag3)))); _check_send_frag3(mhr_len, true); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); } static void test_minfwd_frag_iphc__no_frag(void) { gnrc_sixlowpan_frag_fb_t *fbuf; gnrc_pktsnip_t *pkt, *netif; gnrc_netif_hdr_t *netif_hdr; pkt = gnrc_pktbuf_add(NULL, &_test_send_frag1[TEST_SEND_FRAG1_PAYLOAD_POS], TEST_SEND_FRAG1_PAYLOAD_SIZE, GNRC_NETTYPE_SIXLOWPAN); TEST_ASSERT_NOT_NULL(pkt); netif = gnrc_netif_hdr_build(_vrbe_base.src, _vrbe_base.src_len, _vrbe_base.dst, _vrbe_base.dst_len); TEST_ASSERT_NOT_NULL(netif); netif_hdr = netif->data; TEST_ASSERT_NOT_NULL(netif_hdr); netif_hdr->if_pid = _mock_netif->pid; LL_PREPEND(pkt, netif); TEST_ASSERT_NOT_NULL((fbuf = gnrc_sixlowpan_frag_fb_get())); fbuf->datagram_size = TEST_SEND_FRAG1_PAYLOAD_SIZE; fbuf->tag = TEST_SEND_DATAGRAM_TAG; netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT_EQUAL_INT( -1, gnrc_sixlowpan_frag_minfwd_frag_iphc(pkt, TEST_SEND_DATAGRAM_SIZE, &_rem_gb, fbuf) ); /* should time out (as the packet should be handled by normal fragmentation) * now */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_send_frag1))); TEST_ASSERT_NULL(fbuf->pkt); gnrc_pktbuf_release(pkt); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); } static void test_minfwd_frag_iphc__ll_dst(void) { gnrc_sixlowpan_frag_fb_t *fbuf; gnrc_pktsnip_t *pkt, *netif; gnrc_netif_hdr_t *netif_hdr; pkt = gnrc_pktbuf_add(NULL, &_test_send_ll[TEST_SEND_LL_PAYLOAD_POS], TEST_SEND_LL_PAYLOAD_SIZE, GNRC_NETTYPE_SIXLOWPAN); TEST_ASSERT_NOT_NULL(pkt); netif = gnrc_netif_hdr_build(_vrbe_base.src, _vrbe_base.src_len, _vrbe_base.dst, _vrbe_base.dst_len); TEST_ASSERT_NOT_NULL(netif); netif_hdr = netif->data; TEST_ASSERT_NOT_NULL(netif_hdr); netif_hdr->if_pid = _mock_netif->pid; LL_PREPEND(pkt, netif); TEST_ASSERT_NOT_NULL((fbuf = gnrc_sixlowpan_frag_fb_get())); fbuf->datagram_size = TEST_SEND_FRAG1_PAYLOAD_SIZE; fbuf->tag = TEST_SEND_DATAGRAM_TAG; netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT_EQUAL_INT( -1, gnrc_sixlowpan_frag_minfwd_frag_iphc(pkt, TEST_SEND_DATAGRAM_SIZE, &_rem_ll, fbuf) ); /* should time out (as the packet should be handled by normal fragmentation) * now */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_send_frag1))); TEST_ASSERT_NULL(fbuf->pkt); gnrc_pktbuf_release(pkt); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); } static void test_sixlo_recv__1st_frag_uncomp(void) { gnrc_sixlowpan_frag_vrb_t *vrbe; gnrc_pktsnip_t *frag; size_t mhr_len; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_1st_frag_uncomp, sizeof(_test_1st_frag_uncomp))) ); /* configure route to destination of IP header in frag */ TEST_ASSERT_EQUAL_INT(0, _set_route_and_nce(&_rem_gb, REM_GB_PFX_LEN)); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_1st_frag_uncomp)))); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* reassembly buffer remains empty */ TEST_ASSERT_NULL(_first_non_empty_rbuf()); /* but there was a VRB entry created */ TEST_ASSERT_NOT_NULL((vrbe = gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag ))); _check_vrbe_values(vrbe, mhr_len, FIRST_FRAGMENT); TEST_ASSERT_EQUAL_INT(TEST_1ST_FRAG_UNCOMP_SIZE, vrbe->super.current_size); /* only the received fragment is registered */ TEST_ASSERT_NOT_NULL(vrbe->super.ints); TEST_ASSERT_NULL(vrbe->super.ints->next); TEST_ASSERT(_target_buf[0] & IEEE802154_FCF_FRAME_PEND); _check_1st_frag_uncomp(mhr_len, 1U); } static void test_sixlo_recv__1st_frag_uncomp__no_route(void) { const gnrc_sixlowpan_frag_rb_t *rbuf; gnrc_pktsnip_t *frag; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_1st_frag_uncomp, sizeof(_test_1st_frag_uncomp))) ); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* should time out */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_1st_frag_uncomp))); /* normal reassembly should have started */ /* reassembly buffer entry should have been created */ TEST_ASSERT_NOT_NULL((rbuf = _first_non_empty_rbuf())); /* and VRB remains empty */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag )); TEST_ASSERT_EQUAL_INT(_vrbe_base.datagram_size, rbuf->pkt->size); gnrc_pktbuf_release(rbuf->pkt); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* This is normal reassembly so the rest should have be tested in the * test for normal reassembly ;-) */ } static void test_sixlo_recv__1st_frag_uncomp__after_nth_frag(void) { const gnrc_sixlowpan_frag_rb_t *rbuf; gnrc_pktsnip_t *frag; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_nth_frag, sizeof(_test_nth_frag))) ); /* configure route to destination of IP header in frag */ TEST_ASSERT_EQUAL_INT(0, _set_route_and_nce(&_rem_gb, REM_GB_PFX_LEN)); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* should time out */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_nth_frag))); /* reassembly buffer entry should have been created */ TEST_ASSERT_NOT_NULL(_first_non_empty_rbuf()); /* and VRB remains empty */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag )); TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_1st_frag_uncomp, sizeof(_test_1st_frag_uncomp))) ); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* should time out */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_1st_frag_uncomp))); /* reassembly buffer entry should still exist */ TEST_ASSERT_NOT_NULL((rbuf = _first_non_empty_rbuf())); /* and VRB still remains empty */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag )); TEST_ASSERT_EQUAL_INT(_vrbe_base.datagram_size, rbuf->pkt->size); gnrc_pktbuf_release(rbuf->pkt); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* This is normal reassembly so the rest should have be tested in the * test for normal reassembly ;-) */ } static void test_sixlo_recv__1st_frag_comp(void) { gnrc_sixlowpan_frag_vrb_t *vrbe; gnrc_pktsnip_t *frag; size_t mhr_len; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_1st_frag_comp_prev_hop, sizeof(_test_1st_frag_comp_prev_hop))) ); /* configure route to destination of IP header in frag */ TEST_ASSERT_EQUAL_INT(0, _set_route_and_nce(&_rem_gb, REM_GB_PFX_LEN)); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* first wait and check IPHC part (we put some slack in the first fragment) */ TEST_ASSERT((mhr_len = _wait_for_packet( sizeof(_test_1st_frag_comp) + TEST_1ST_FRAG_UNCOMP_UDP_PAYLOAD_SIZE ))); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* reassembly buffer remains empty */ TEST_ASSERT_NULL(_first_non_empty_rbuf()); /* but there was a VRB entry created */ TEST_ASSERT_NOT_NULL((vrbe = gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag ))); _check_vrbe_values(vrbe, mhr_len, FIRST_FRAGMENT); TEST_ASSERT_EQUAL_INT(TEST_1ST_FRAG_COMP_FRAG_SIZE, vrbe->super.current_size); /* only the received fragment is registered */ TEST_ASSERT_NOT_NULL(vrbe->super.ints); TEST_ASSERT_NULL(vrbe->super.ints->next); TEST_ASSERT(_target_buf[0] & IEEE802154_FCF_FRAME_PEND); TEST_ASSERT_MESSAGE( memcmp(&_test_1st_frag_comp[TEST_1ST_FRAG_COMP_PAYLOAD_POS], &_target_buf[mhr_len + sizeof(sixlowpan_frag_t)], TEST_1ST_FRAG_COMP_SIZE) == 0, "unexpected IPHC header" ); TEST_ASSERT_MESSAGE( memcmp(&_test_1st_frag_uncomp[TEST_1ST_FRAG_UNCOMP_UDP_PAYLOAD_POS], &_target_buf[mhr_len + sizeof(_test_1st_frag_comp)], TEST_1ST_FRAG_UNCOMP_UDP_PAYLOAD_SIZE) == 0, "unexpected forwarded packet payload" ); } static void test_sixlo_recv__1st_frag_comp__only_iphc(void) { gnrc_sixlowpan_frag_vrb_t *vrbe; gnrc_pktsnip_t *frag; size_t mhr_len; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_1st_frag_comp_prev_hop, TEST_1ST_FRAG_COMP_PREV_HOP_UDP_PAYLOAD_POS)) ); /* configure route to destination of IP header in frag */ TEST_ASSERT_EQUAL_INT(0, _set_route_and_nce(&_rem_gb, REM_GB_PFX_LEN)); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* first wait and check IPHC part (we put some slack in the first fragment) */ TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_1st_frag_comp)))); /* reassembly buffer remains empty */ TEST_ASSERT_NULL(_first_non_empty_rbuf()); /* but there was a VRB entry created */ TEST_ASSERT_NOT_NULL((vrbe = gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag ))); _check_vrbe_values(vrbe, mhr_len, FIRST_FRAGMENT); TEST_ASSERT_EQUAL_INT(TEST_1ST_FRAG_COMP_ONLY_IPHC_FRAG_SIZE, vrbe->super.current_size); /* only the received fragment is registered */ TEST_ASSERT_NOT_NULL(vrbe->super.ints); TEST_ASSERT_NULL(vrbe->super.ints->next); TEST_ASSERT(_target_buf[0] & IEEE802154_FCF_FRAME_PEND); TEST_ASSERT_MESSAGE( memcmp(&_test_1st_frag_comp[TEST_1ST_FRAG_COMP_PAYLOAD_POS], &_target_buf[mhr_len + sizeof(sixlowpan_frag_t)], TEST_1ST_FRAG_COMP_SIZE) == 0, "unexpected IPHC header" ); } static void test_sixlo_recv__1st_frag_comp__only_iphc_no_nhc(void) { gnrc_sixlowpan_frag_vrb_t *vrbe; gnrc_pktsnip_t *frag; size_t mhr_len; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_send_frag1_prev_hop, sizeof(_test_send_frag1_prev_hop))) ); /* configure route to destination of IP header in frag */ TEST_ASSERT_EQUAL_INT(0, _set_route_and_nce(&_rem_gb, REM_GB_PFX_LEN)); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* first wait and check IPHC part (we put some slack in the first fragment) */ TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_send_frag1)))); /* reassembly buffer remains empty */ TEST_ASSERT_NULL(_first_non_empty_rbuf()); /* but there was a VRB entry created */ TEST_ASSERT_NOT_NULL((vrbe = gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag ))); _check_vrbe_values(vrbe, mhr_len, FIRST_FRAGMENT); TEST_ASSERT_EQUAL_INT(TEST_SEND_FRAG1_SIZE, vrbe->super.current_size); /* only the received fragment is registered */ TEST_ASSERT_NOT_NULL(vrbe->super.ints); TEST_ASSERT_NULL(vrbe->super.ints->next); TEST_ASSERT(_target_buf[0] & IEEE802154_FCF_FRAME_PEND); TEST_ASSERT_MESSAGE( memcmp(&_test_send_frag1[TEST_SEND_FRAG1_PAYLOAD_POS], &_target_buf[mhr_len + sizeof(sixlowpan_frag_t)], TEST_SEND_FRAG1_PAYLOAD_SIZE) == 0, "unexpected IPHC header" ); } static void test_sixlo_recv__1st_frag_comp__no_route(void) { const gnrc_sixlowpan_frag_rb_t *rbuf; gnrc_pktsnip_t *frag; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_1st_frag_comp_prev_hop, sizeof(_test_1st_frag_comp_prev_hop))) ); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* should time out */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_1st_frag_comp))); /* normal reassembly should have started */ /* reassembly buffer entry should have been created */ TEST_ASSERT_NOT_NULL((rbuf = _first_non_empty_rbuf())); /* and VRB remains empty */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag )); TEST_ASSERT_EQUAL_INT(_vrbe_base.datagram_size, rbuf->pkt->size); gnrc_pktbuf_release(rbuf->pkt); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* This is normal reassembly so the rest should have be tested in the * test for normal reassembly ;-) */ } static void test_sixlo_recv__1st_frag_comp__no_route_only_iphc(void) { const gnrc_sixlowpan_frag_rb_t *rbuf; gnrc_pktsnip_t *frag; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_1st_frag_comp_prev_hop, TEST_1ST_FRAG_COMP_PREV_HOP_UDP_PAYLOAD_POS)) ); /* configure route to destination of IP header in frag */ TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* should time out */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_1st_frag_comp))); /* normal reassembly should have started */ /* reassembly buffer entry should have been created */ TEST_ASSERT_NOT_NULL((rbuf = _first_non_empty_rbuf())); /* and VRB remains empty */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag )); TEST_ASSERT_EQUAL_INT(_vrbe_base.datagram_size, rbuf->pkt->size); gnrc_pktbuf_release(rbuf->pkt); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* This is normal reassembly so the rest should have be tested in the * test for normal reassembly ;-) */ } static void test_sixlo_recv__1st_frag_comp__no_refrag(void) { gnrc_sixlowpan_frag_fb_t *reserved[CONFIG_GNRC_SIXLOWPAN_FRAG_FB_SIZE]; const gnrc_sixlowpan_frag_rb_t *rbuf; gnrc_pktsnip_t *frag; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_1st_frag_comp_prev_hop, sizeof(_test_1st_frag_comp_prev_hop))) ); /* consume all available gnrc_sixlowpan_frag_fb_t instances so creating * a fragment with extra slack is not possible */ for (unsigned i = 0; i < CONFIG_GNRC_SIXLOWPAN_FRAG_FB_SIZE; i++) { reserved[i] = gnrc_sixlowpan_frag_fb_get(); reserved[i]->pkt = frag; } /* configure route to destination of IP header in frag */ TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* should time out */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_1st_frag_comp))); /* normal reassembly should have started */ /* reassembly buffer entry should have been created */ TEST_ASSERT_NOT_NULL((rbuf = _first_non_empty_rbuf())); /* and VRB remains empty */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag )); TEST_ASSERT_EQUAL_INT(_vrbe_base.datagram_size, rbuf->pkt->size); gnrc_pktbuf_release(rbuf->pkt); /* release all gnrc_sixlowpan_frag_fb_t instances again */ for (unsigned i = 0; i < CONFIG_GNRC_SIXLOWPAN_FRAG_FB_SIZE; i++) { reserved[i]->pkt = NULL; } TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* This is normal reassembly so the rest should have be tested in the * test for normal reassembly ;-) */ } static void test_sixlo_recv__1st_frag_comp__after_nth_frag(void) { const gnrc_sixlowpan_frag_rb_t *rbuf; gnrc_pktsnip_t *frag; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_nth_frag, sizeof(_test_nth_frag))) ); /* configure route to destination of IP header in frag */ TEST_ASSERT_EQUAL_INT(0, _set_route_and_nce(&_rem_gb, REM_GB_PFX_LEN)); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* should time out */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_nth_frag))); /* reassembly buffer entry should have been created */ TEST_ASSERT_NOT_NULL(_first_non_empty_rbuf()); /* and VRB remains empty */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag )); TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_1st_frag_comp_prev_hop, sizeof(_test_1st_frag_comp_prev_hop))) ); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* should time out */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_1st_frag_comp))); /* reassembly buffer entry should still exist */ TEST_ASSERT_NOT_NULL((rbuf = _first_non_empty_rbuf())); /* and VRB still remains empty */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag )); TEST_ASSERT_EQUAL_INT(_vrbe_base.datagram_size, rbuf->pkt->size); gnrc_pktbuf_release(rbuf->pkt); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* This is normal reassembly so the rest should have be tested in the * test for normal reassembly ;-) */ } static void test_sixlo_recv__nth_frag(void) { gnrc_sixlowpan_frag_vrb_t *vrbe; gnrc_pktsnip_t *frag; size_t mhr_len; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_nth_frag, sizeof(_test_nth_frag))) ); TEST_ASSERT_NOT_NULL( (vrbe = gnrc_sixlowpan_frag_vrb_add(&_vrbe_base, _mock_netif, _rem_l2, sizeof(_rem_l2))) ); vrbe->super.arrival = xtimer_now_usec(); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_nth_frag)))); /* reassembly buffer remains empty */ TEST_ASSERT_NULL(_first_non_empty_rbuf()); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); _check_vrbe_values(vrbe, mhr_len, NTH_FRAGMENT); TEST_ASSERT_EQUAL_INT(TEST_NTH_FRAG_SIZE, vrbe->super.current_size); TEST_ASSERT(_target_buf[0] & IEEE802154_FCF_FRAME_PEND); TEST_ASSERT_MESSAGE( memcmp(&_test_nth_frag[TEST_NTH_FRAG_PAYLOAD_POS], &_target_buf[mhr_len + sizeof(sixlowpan_frag_n_t)], TEST_NTH_FRAG_SIZE) == 0, "unexpected forwarded packet payload" ); /* VRB entry should not have been removed */ TEST_ASSERT_NOT_NULL(gnrc_sixlowpan_frag_vrb_get(_vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag)); } static void test_sixlo_recv__nth_frag__datagram_complete(void) { gnrc_sixlowpan_frag_vrb_t *vrbe; gnrc_pktsnip_t *frag; size_t mhr_len; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_nth_frag, sizeof(_test_nth_frag))) ); TEST_ASSERT_NOT_NULL( (vrbe = gnrc_sixlowpan_frag_vrb_add(&_vrbe_base, _mock_netif, _rem_l2, sizeof(_rem_l2))) ); /* simulate current_size only missing the created fragment */ vrbe->super.current_size = _vrbe_base.datagram_size - TEST_NTH_FRAG_SIZE; vrbe->super.arrival = xtimer_now_usec(); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_nth_frag)))); /* reassembly buffer remains empty */ TEST_ASSERT_NULL(_first_non_empty_rbuf()); /* VRB entry should have been removed */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag )); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* VRB entry should have been removed, so don't check */ TEST_ASSERT(!(_target_buf[0] & IEEE802154_FCF_FRAME_PEND)); TEST_ASSERT_MESSAGE( memcmp(&_test_nth_frag[TEST_NTH_FRAG_PAYLOAD_POS], &_target_buf[mhr_len + sizeof(sixlowpan_frag_n_t)], TEST_NTH_FRAG_SIZE) == 0, "unexpected forwarded packet payload" ); } static void test_sixlo_recv__nth_frag__no_vrbe(void) { const gnrc_sixlowpan_frag_rb_t *rbuf; gnrc_pktsnip_t *frag; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_nth_frag, sizeof(_test_nth_frag))) ); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); /* should time out */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_nth_frag))); /* normal reassembly should have started */ /* reassembly buffer entry should have been created */ TEST_ASSERT_NOT_NULL((rbuf = _first_non_empty_rbuf())); /* and VRB remains empty */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag )); TEST_ASSERT_EQUAL_INT(_vrbe_base.datagram_size, rbuf->pkt->size); gnrc_pktbuf_release(rbuf->pkt); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* This is normal reassembly so the rest should have be tested in the * test for normal reassembly ;-) */ } static void test_sixlo_recv__nth_frag__duplicate(void) { gnrc_sixlowpan_frag_vrb_t *vrbe; gnrc_pktsnip_t *frag; uint16_t exp_current_size; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_nth_frag, sizeof(_test_nth_frag))) ); TEST_ASSERT_NOT_NULL( (vrbe = gnrc_sixlowpan_frag_vrb_add(&_vrbe_base, _mock_netif, _rem_l2, sizeof(_rem_l2))) ); vrbe->super.arrival = xtimer_now_usec(); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); TEST_ASSERT(_wait_for_packet(sizeof(_test_nth_frag))); /* reassembly buffer remains empty */ TEST_ASSERT_NULL(_first_non_empty_rbuf()); /* VRB entry should not have been removed */ TEST_ASSERT_NOT_NULL(gnrc_sixlowpan_frag_vrb_get(_vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag)); /* rest was already tested */ exp_current_size = vrbe->super.current_size; /* generate and receive duplicate */ TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_nth_frag, sizeof(_test_nth_frag))) ); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); _target_buf_len = 0; /* should time out */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_nth_frag))); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* reassembly buffer remains empty */ TEST_ASSERT_NULL(_first_non_empty_rbuf()); /* VRB entry should not have been removed */ TEST_ASSERT_NOT_NULL(gnrc_sixlowpan_frag_vrb_get(_vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag)); TEST_ASSERT_EQUAL_INT(exp_current_size, vrbe->super.current_size); } static void test_sixlo_recv__nth_frag__overlap(void) { gnrc_sixlowpan_frag_vrb_t *vrbe; gnrc_pktsnip_t *frag; sixlowpan_frag_n_t *frag_hdr; TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_nth_frag, sizeof(_test_nth_frag))) ); TEST_ASSERT_NOT_NULL( (vrbe = gnrc_sixlowpan_frag_vrb_add(&_vrbe_base, _mock_netif, _rem_l2, sizeof(_rem_l2))) ); vrbe->super.arrival = xtimer_now_usec(); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); TEST_ASSERT(_wait_for_packet(sizeof(_test_nth_frag))); /* reassembly buffer remains empty */ TEST_ASSERT_NULL(_first_non_empty_rbuf()); /* rest was already tested */ /* generate and receive overlapping fragment */ TEST_ASSERT_NOT_NULL( (frag = _create_recv_frag(_test_nth_frag, sizeof(_test_nth_frag))) ); frag_hdr = frag->data; /* move offset to simulate overlap*/ frag_hdr->offset--; TEST_ASSERT(0 < gnrc_netapi_dispatch_receive(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, frag)); _target_buf_len = 0; /* should time out */ TEST_ASSERT_EQUAL_INT(0, _wait_for_packet(sizeof(_test_nth_frag))); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); /* reassembly buffer remains empty */ TEST_ASSERT_NULL(_first_non_empty_rbuf()); /* VRB entry was removed due to overlap error */ TEST_ASSERT_NULL(gnrc_sixlowpan_frag_vrb_get( _vrbe_base.src, _vrbe_base.src_len, _vrbe_base.tag )); } static void test_sixlo_send(void) { gnrc_pktsnip_t *pkt; size_t mhr_len; TEST_ASSERT_NOT_NULL((pkt = _create_send_datagram(false, true))); netdev_ieee802154_t *netdev_ieee802154 = container_of(_mock_netif->dev, netdev_ieee802154_t, netdev); netdev_test_t *netdev_test = container_of(netdev_ieee802154, netdev_test_t, netdev); netdev_test_set_send_cb(netdev_test, _mock_netdev_send); TEST_ASSERT(0 < gnrc_netapi_dispatch_send(GNRC_NETTYPE_SIXLOWPAN, GNRC_NETREG_DEMUX_CTX_ALL, pkt)); TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_send_frag1)))); /* tags are generated by the stack so don't check */ _check_send_frag1(mhr_len, false); TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_send_frag2)))); _check_send_frag2(mhr_len, false); TEST_ASSERT((mhr_len = _wait_for_packet(sizeof(_test_send_frag3)))); _check_send_frag3(mhr_len, false); TEST_ASSERT(gnrc_pktbuf_is_sane()); TEST_ASSERT(gnrc_pktbuf_is_empty()); } static Test *tests_gnrc_sixlowpan_frag_minfwd_api(void) { EMB_UNIT_TESTFIXTURES(fixtures) { new_TestFixture(test_minfwd_vrbe_from_route__success__given_netif), new_TestFixture(test_minfwd_vrbe_from_route__success__no_netif), new_TestFixture(test_minfwd_vrbe_from_route__no_route1), new_TestFixture(test_minfwd_vrbe_from_route__no_route2), new_TestFixture(test_minfwd_vrbe_from_route__local_addr), new_TestFixture(test_minfwd_vrbe_from_route__vrb_full), new_TestFixture(test_minfwd_forward__success__1st_frag_sixlo), new_TestFixture(test_minfwd_forward__success__1st_frag_iphc), new_TestFixture(test_minfwd_forward__success__nth_frag_incomplete), new_TestFixture(test_minfwd_forward__success__nth_frag_complete), new_TestFixture(test_minfwd_forward__ENOMEM__netif_hdr_build_fail), new_TestFixture(test_minfwd_frag_iphc__success), new_TestFixture(test_minfwd_frag_iphc__no_frag), new_TestFixture(test_minfwd_frag_iphc__ll_dst), }; EMB_UNIT_TESTCALLER(tests, _set_up, _tear_down, fixtures); return (Test *)&tests; } static Test *tests_gnrc_sixlowpan_frag_minfwd_integration(void) { EMB_UNIT_TESTFIXTURES(fixtures) { new_TestFixture(test_sixlo_recv__1st_frag_uncomp), new_TestFixture(test_sixlo_recv__1st_frag_uncomp__no_route), new_TestFixture(test_sixlo_recv__1st_frag_uncomp__after_nth_frag), new_TestFixture(test_sixlo_recv__1st_frag_comp), new_TestFixture(test_sixlo_recv__1st_frag_comp__only_iphc), new_TestFixture(test_sixlo_recv__1st_frag_comp__only_iphc_no_nhc), new_TestFixture(test_sixlo_recv__1st_frag_comp__no_route), new_TestFixture(test_sixlo_recv__1st_frag_comp__no_route_only_iphc), new_TestFixture(test_sixlo_recv__1st_frag_comp__no_refrag), new_TestFixture(test_sixlo_recv__1st_frag_comp__after_nth_frag), new_TestFixture(test_sixlo_recv__nth_frag), new_TestFixture(test_sixlo_recv__nth_frag__datagram_complete), new_TestFixture(test_sixlo_recv__nth_frag__no_vrbe), new_TestFixture(test_sixlo_recv__nth_frag__duplicate), new_TestFixture(test_sixlo_recv__nth_frag__overlap), new_TestFixture(test_sixlo_send), }; EMB_UNIT_TESTCALLER(tests, _set_up, _tear_down, fixtures); return (Test *)&tests; } int main(void) { _tests_init(); TESTS_START(); TESTS_RUN(tests_gnrc_sixlowpan_frag_minfwd_api()); TESTS_RUN(tests_gnrc_sixlowpan_frag_minfwd_integration()); TESTS_END(); return 0; } static gnrc_pktsnip_t *_create_ipv6_hdr(const ipv6_hdr_t *hdr) { return gnrc_pktbuf_add(NULL, hdr, sizeof(*hdr), GNRC_NETTYPE_IPV6); } static gnrc_pktsnip_t *_create_recv_frag(const void *frag_data, size_t frag_size) { gnrc_pktsnip_t *netif; gnrc_netif_hdr_t *netif_hdr; netif = gnrc_netif_hdr_build(_vrbe_base.src, _vrbe_base.src_len, _vrbe_base.dst, _vrbe_base.dst_len); if (netif == NULL) { return NULL; } netif_hdr = netif->data; netif_hdr->if_pid = _mock_netif->pid; netif_hdr->flags = GNRC_NETIF_HDR_FLAGS_MORE_DATA; return gnrc_pktbuf_add(netif, frag_data, frag_size, GNRC_NETTYPE_SIXLOWPAN); } static int _set_route_and_nce(const ipv6_addr_t *route, unsigned pfx_len) { /* add neighbor cache entry */ if (gnrc_ipv6_nib_nc_set(&_rem_ll, _mock_netif->pid, _rem_l2, sizeof(_rem_l2)) < 0) { return -1; } /* and route to neighbor */ if (gnrc_ipv6_nib_ft_add(route, pfx_len, &_rem_ll, _mock_netif->pid, 0) < 0) { return -1; } return 0; } static gnrc_pktsnip_t *_create_send_datagram(bool compressed, bool payload) { gnrc_pktsnip_t *pkt1 = NULL, *pkt2; gnrc_netif_hdr_t *netif_hdr; if (payload) { pkt1 = gnrc_pktbuf_add(NULL, _test_send_icmpv6, sizeof(_test_send_icmpv6), GNRC_NETTYPE_ICMPV6); if (pkt1 == NULL) { return NULL; } } if (compressed) { /* Use IPHC header from expected data */ pkt2 = gnrc_pktbuf_add(pkt1, &_test_send_frag1[TEST_SEND_FRAG1_PAYLOAD_POS], TEST_SEND_FRAG1_PAYLOAD_SIZE, GNRC_NETTYPE_SIXLOWPAN); } else { pkt2 = gnrc_pktbuf_add(pkt1, _test_send_ipv6, sizeof(_test_send_ipv6), GNRC_NETTYPE_IPV6); } if (pkt2 == NULL) { return NULL; } pkt1 = gnrc_netif_hdr_build(_vrbe_base.src, _vrbe_base.src_len, _vrbe_base.dst, _vrbe_base.dst_len); if (pkt1 == NULL) { return NULL; } netif_hdr = pkt1->data; if (netif_hdr == NULL) { return NULL; } netif_hdr->if_pid = _mock_netif->pid; LL_PREPEND(pkt2, pkt1); return pkt2; } static size_t _wait_for_packet(size_t exp_size) { size_t mhr_len; xtimer_mutex_lock_timeout(&_target_buf_filled, SEND_PACKET_TIMEOUT); while ((mhr_len = ieee802154_get_frame_hdr_len(_target_buf))) { if (IS_USED(MODULE_OD) && _target_buf_len > 0) { puts("Sent packet: "); od_hex_dump(_target_buf, _target_buf_len, OD_WIDTH_DEFAULT); } if (exp_size == (_target_buf_len - mhr_len)) { /* found expected packet */ break; } /* let packets in again at the device */ mutex_unlock(&_target_buf_barrier); /* wait for next packet */ if (xtimer_mutex_lock_timeout(&_target_buf_filled, SEND_PACKET_TIMEOUT) < 0) { return 0; } } return mhr_len; } static void _check_vrbe_values(gnrc_sixlowpan_frag_vrb_t *vrbe, size_t mhr_len, int frag_type) { uint8_t target_buf_dst[IEEE802154_LONG_ADDRESS_LEN]; sixlowpan_frag_t *frag_hdr = (sixlowpan_frag_t *)&_target_buf[mhr_len]; le_uint16_t tmp; TEST_ASSERT_EQUAL_INT(vrbe->super.dst_len, ieee802154_get_dst(_target_buf, target_buf_dst, &tmp)); TEST_ASSERT_MESSAGE(memcmp(vrbe->super.dst, target_buf_dst, vrbe->super.dst_len) == 0, "vrbe->out_dst != target_buf_dst"); TEST_ASSERT_EQUAL_INT(vrbe->super.datagram_size, byteorder_ntohs(frag_hdr->disp_size) & SIXLOWPAN_FRAG_SIZE_MASK); TEST_ASSERT_EQUAL_INT(vrbe->out_tag, byteorder_ntohs(frag_hdr->tag)); switch (frag_type) { case FIRST_FRAGMENT: { TEST_ASSERT_EQUAL_INT( SIXLOWPAN_FRAG_1_DISP, _target_buf[mhr_len] & SIXLOWPAN_FRAG_DISP_MASK ); break; } case FIRST_FRAGMENT_REST: case NTH_FRAGMENT: { sixlowpan_frag_n_t *frag_n_hdr = (sixlowpan_frag_n_t *)&_target_buf[mhr_len]; uint8_t exp_offset = (frag_type == FIRST_FRAGMENT_REST) ? TEST_1ST_FRAG_COMP_EXP_OFFSET : _test_nth_frag[TEST_NTH_FRAG_OFFSET_POS]; TEST_ASSERT_EQUAL_INT( SIXLOWPAN_FRAG_N_DISP, _target_buf[mhr_len] & SIXLOWPAN_FRAG_DISP_MASK ); TEST_ASSERT_EQUAL_INT(exp_offset, frag_n_hdr->offset); break; } default: TEST_ASSERT_MESSAGE(false, "Unexpected frag_type"); break; } } static void _check_1st_frag_uncomp(size_t mhr_len, uint8_t exp_hl_diff) { static const ipv6_hdr_t *exp_ipv6_hdr = (ipv6_hdr_t *)&_test_1st_frag_uncomp[ TEST_1ST_FRAG_UNCOMP_IPV6_HDR_POS ]; ipv6_hdr_t *ipv6_hdr; TEST_ASSERT_EQUAL_INT( SIXLOWPAN_UNCOMP, _target_buf[mhr_len + TEST_1ST_FRAG_UNCOMP_PAYLOAD_POS] ); ipv6_hdr = (ipv6_hdr_t *)&_target_buf[ mhr_len + TEST_1ST_FRAG_UNCOMP_IPV6_HDR_POS ]; TEST_ASSERT_EQUAL_INT(exp_ipv6_hdr->v_tc_fl.u32, ipv6_hdr->v_tc_fl.u32); TEST_ASSERT_EQUAL_INT(exp_ipv6_hdr->len.u16, ipv6_hdr->len.u16); TEST_ASSERT_EQUAL_INT(exp_ipv6_hdr->nh, ipv6_hdr->nh); /* hop-limit shall be decremented by 1 */ TEST_ASSERT_EQUAL_INT(exp_ipv6_hdr->hl - exp_hl_diff, ipv6_hdr->hl); TEST_ASSERT(ipv6_addr_equal(&exp_ipv6_hdr->src, &ipv6_hdr->src)); TEST_ASSERT(ipv6_addr_equal(&exp_ipv6_hdr->dst, &ipv6_hdr->dst)); TEST_ASSERT_MESSAGE( memcmp(&_test_1st_frag_uncomp[TEST_1ST_FRAG_UNCOMP_IPV6_PAYLOAD_POS], ipv6_hdr + 1, TEST_1ST_FRAG_UNCOMP_IPV6_PAYLOAD_SIZE) == 0, "unexpected forwarded packet payload" ); } static void _check_send_frag_datagram_fields(size_t mhr_len, bool check_tag) { sixlowpan_frag_t *frag_hdr = (sixlowpan_frag_t *)&_target_buf[mhr_len]; TEST_ASSERT_EQUAL_INT(TEST_SEND_DATAGRAM_SIZE, byteorder_ntohs(frag_hdr->disp_size) & SIXLOWPAN_FRAG_SIZE_MASK); if (check_tag) { TEST_ASSERT_EQUAL_INT(TEST_SEND_DATAGRAM_TAG, byteorder_ntohs(frag_hdr->tag)); } } static void _check_send_frag1(size_t mhr_len, bool check_tag) { TEST_ASSERT_EQUAL_INT( SIXLOWPAN_FRAG_1_DISP, _target_buf[mhr_len] & SIXLOWPAN_FRAG_DISP_MASK ); _check_send_frag_datagram_fields(mhr_len, check_tag); TEST_ASSERT_MESSAGE( memcmp(&_test_send_frag1[TEST_SEND_FRAG1_PAYLOAD_POS], &_target_buf[TEST_SEND_FRAG1_PAYLOAD_POS + mhr_len], TEST_SEND_FRAG1_PAYLOAD_SIZE) == 0, "unexpected IPHC header" ); } static void _check_send_frag2(size_t mhr_len, bool check_tag) { sixlowpan_frag_n_t *frag_hdr; TEST_ASSERT_EQUAL_INT( SIXLOWPAN_FRAG_N_DISP, _target_buf[mhr_len] & SIXLOWPAN_FRAG_DISP_MASK ); frag_hdr = (sixlowpan_frag_n_t *)&_target_buf[mhr_len]; _check_send_frag_datagram_fields(mhr_len, check_tag); TEST_ASSERT_EQUAL_INT(TEST_SEND_FRAG2_OFFSET, frag_hdr->offset); TEST_ASSERT_MESSAGE( memcmp(&_test_send_frag2[TEST_SEND_FRAG2_PAYLOAD_POS], &_target_buf[TEST_SEND_FRAG2_PAYLOAD_POS + mhr_len], TEST_SEND_FRAG2_PAYLOAD_SIZE) == 0, "unexpected send packet payload" ); } static void _check_send_frag3(size_t mhr_len, bool check_tag) { sixlowpan_frag_n_t *frag_hdr; TEST_ASSERT_EQUAL_INT( SIXLOWPAN_FRAG_N_DISP, _target_buf[mhr_len] & SIXLOWPAN_FRAG_DISP_MASK ); frag_hdr = (sixlowpan_frag_n_t *)&_target_buf[mhr_len]; _check_send_frag_datagram_fields(mhr_len, check_tag); TEST_ASSERT_EQUAL_INT(TEST_SEND_FRAG3_OFFSET, frag_hdr->offset); TEST_ASSERT_MESSAGE( memcmp(&_test_send_frag3[TEST_SEND_FRAG3_PAYLOAD_POS], &_target_buf[TEST_SEND_FRAG3_PAYLOAD_POS + mhr_len], TEST_SEND_FRAG3_PAYLOAD_SIZE) == 0, "unexpected send packet payload" ); } static const gnrc_sixlowpan_frag_rb_t *_first_non_empty_rbuf(void) { const gnrc_sixlowpan_frag_rb_t *rbuf = gnrc_sixlowpan_frag_rb_array(); for (unsigned i = 0; i < CONFIG_GNRC_SIXLOWPAN_FRAG_RBUF_SIZE; i++) { if (!gnrc_sixlowpan_frag_rb_entry_empty(&rbuf[i])) { return rbuf; } } return NULL; } static int _mock_netdev_send(netdev_t *dev, const iolist_t *iolist) { (void)dev; mutex_lock(&_target_buf_barrier); _target_buf_len = 0; for (const iolist_t *ptr = iolist; ptr != NULL; ptr = ptr->iol_next) { if ((_target_buf_len + iolist->iol_len) > sizeof(_target_buf)) { return -ENOBUFS; } memcpy(&_target_buf[_target_buf_len], ptr->iol_base, ptr->iol_len); _target_buf_len += ptr->iol_len; } /* wake-up test thread */ mutex_unlock(&_target_buf_filled); return _target_buf_len; }