unit.c

#include "unit_shared.c"
#include "unit_tests_fifo.c"
#include "unit_tests_api.c"
#include "unit_tests_dns_dhcp.c"
#include "unit_tests_tcp_ack.c"
#include "unit_tests_tcp_flow.c"
#include "unit_tests_proto.c"

Suite *wolf_suite(void)
{
    Suite *s;
    TCase *tc_core, *tc_proto, *tc_utils, *tc_wolfssl;

    s = suite_create("wolfIP");
    tc_core = tcase_create("Core");
    tc_utils = tcase_create("Utils");
    tc_proto = tcase_create("Protocols");
    tc_wolfssl = tcase_create("wolfSSL-IO");


    tcase_add_test(tc_core, test_fifo_init);
    tcase_add_test(tc_core, test_fifo_peek_wraps_tail_when_head_lt_tail);
    tcase_add_test(tc_core, test_fifo_peek_no_wrap_when_space_available);
    tcase_add_test(tc_core, test_fifo_next_wraps_on_hwrap);
    tcase_add_test(tc_core, test_fifo_pop_aligns_tail_to_head_returns_null);
    tcase_add_test(tc_core, test_fifo_pop_wraps_tail_when_head_lt_tail);
    tcase_add_test(tc_core, test_fifo_pop_no_wrap_when_space_available);
    tcase_add_test(tc_core, test_fifo_peek_empty_unaligned_tail);
    tcase_add_test(tc_core, test_fifo_len_empty_unaligned_tail);
    tcase_add_test(tc_core, test_fifo_pop_empty_unaligned_tail);
    tcase_add_test(tc_core, test_fifo_push_pop_odd_sizes_drains_cleanly);
    tcase_add_test(tc_core, test_fifo_full_wrap_does_not_appear_empty_or_discard_packets);
    tcase_add_test(tc_core, test_fifo_next_stops_at_aligned_head_when_head_unaligned);
    tcase_add_test(tc_core, test_fifo_full_wrap_next_iterates_all_entries_without_loss);
    tcase_add_test(tc_core, test_fifo_wrap_full_pop_then_refill_keeps_order_without_drops);
    tcase_add_test(tc_core, test_fifo_wrap_flag_transitions_push_pop_around_boundary);
    tcase_add_test(tc_core, test_fifo_wrap_flag_repeated_flips_keep_data_consistent);
    tcase_add_test(tc_core, test_fifo_wrap_flag_transitions_with_odd_payload_sizes);
    tcase_add_test(tc_core, test_fifo_wrap_flag_repeated_flips_with_odd_payload_sizes);

    tcase_add_test(tc_core, test_fifo_push_and_pop);
    tcase_add_test(tc_core, test_fifo_push_and_pop_multiple);
    tcase_add_test(tc_core, test_fifo_pop_success);
    tcase_add_test(tc_core, test_fifo_pop_empty);
    tcase_add_test(tc_core, test_fifo_push_full);
    tcase_add_test(tc_core, test_fifo_can_push_len_null_and_oversized);
    tcase_add_test(tc_core, test_fifo_can_push_len_head_tail_equal_with_wrap);
    tcase_add_test(tc_core, test_fifo_can_push_len_wrap_tail_too_small_rejects);
    tcase_add_test(tc_core, test_fifo_can_push_len_wrap_to_zero_then_accepts);
    tcase_add_test(tc_core, test_fifo_can_push_len_head_at_wrap_boundary);
    tcase_add_test(tc_core, test_fifo_push_wrap);
    tcase_add_test(tc_core, test_fifo_push_wrap_multiple);
    tcase_add_test(tc_core, test_fifo_push_wrap_tail_equals_needed);
    tcase_add_test(tc_core, test_fifo_can_push_len_wrap_tail_equals_needed);
    tcase_add_test(tc_core, test_fifo_space_wrap_sets_hwrap);
    tcase_add_test(tc_core, test_fifo_space_wrap_returns_zero);
    tcase_add_test(tc_core, test_fifo_peek_wrap_to_start);
    tcase_add_test(tc_core, test_fifo_len_with_hwrap);
    tcase_add_test(tc_core, test_fifo_peek_aligns_tail);
    tcase_add_test(tc_core, test_fifo_next_wraps_to_start);
    tcase_add_test(tc_core, test_fifo_space_head_lt_tail);
    tcase_add_test(tc_core, test_fifo_space_with_hwrap);
    tcase_add_test(tc_core, test_fifo_space_hwrap_head_hits_wrap);
    tcase_add_test(tc_core, test_fifo_space_hwrap_head_ge_tail_returns_zero);
    tcase_add_test(tc_core, test_fifo_next_hits_hwrap);
    tcase_add_test(tc_core, test_fifo_push_no_contiguous_space_even_with_space);
    tcase_add_test(tc_core, test_fifo_next_aligned_len_exceeds_size_returns_null);
    tcase_add_test(tc_core, test_fifo_len_tail_gt_head_no_hwrap);
    tcase_add_test(tc_core, test_fifo_pop_wrap_to_start);
    tcase_add_test(tc_core, test_fifo_next_success);
    tcase_add_test(tc_core, test_fifo_next_empty_fifo);
    tcase_add_test(tc_core, test_fifo_next_end_of_fifo);

    tcase_add_test(tc_core, test_queue_init);
    tcase_add_test(tc_core, test_queue_space_empty);
    tcase_add_test(tc_core, test_queue_len_empty);
    tcase_add_test(tc_core, test_queue_partial_fill);
    tcase_add_test(tc_core, test_queue_wrap_around);
    tcase_add_test(tc_core, test_queue_insert_empty);
    tcase_add_test(tc_core, test_queue_insert_sequential);
    tcase_add_test(tc_core, test_queue_insert_negative_diff);
    tcase_add_test(tc_core, test_queue_insert_wraparound_contiguous_and_old_rejected);
    tcase_add_test(tc_core, test_queue_insert_pos_gt_size);
    tcase_add_test(tc_core, test_queue_insert_ancient_data);
    tcase_add_test(tc_core, test_queue_insert_wrap);
    tcase_add_test(tc_core, test_queue_space_wrap);
    tcase_add_test(tc_core, test_queue_insert_len_gt_size);
    tcase_add_test(tc_core, test_queue_insert_len_gt_space);
    tcase_add_test(tc_core, test_queue_insert_len_gt_size_returns_error);
    tcase_add_test(tc_core, test_queue_pop);
    tcase_add_test(tc_core, test_queue_pop_wraparound);
    tcase_add_test(tc_core, test_queue_insert_updates_head_when_pos_plus_len_gt_head);
    tcase_add_test(tc_core, test_queue_insert_no_head_update_when_pos_plus_len_le_head);
    tcase_add_test(tc_core, test_queue_full_state_not_empty_and_drains_data);

    tcase_add_test(tc_utils, test_insert_timer);
    tcase_add_test(tc_utils, test_timer_insert_skips_zero_head);
    tcase_add_test(tc_utils, test_timer_cancel_existing_and_missing);
    tcase_add_test(tc_utils, test_pop_timer);
    tcase_add_test(tc_utils, test_is_timer_expired);
    tcase_add_test(tc_utils, test_cancel_timer);
    tcase_add_test(tc_utils, test_timer_pop_skips_zero_expires);
    tcase_add_test(tc_utils, test_timer_pop_reorders_heap);
    tcase_add_test(tc_utils, test_timer_pop_right_child_swap);
    tcase_add_test(tc_utils, test_timer_pop_break_when_root_small);
    tcase_add_test(tc_utils, test_is_timer_expired_skips_zero_head);
    tcase_add_test(tc_utils, test_wolfip_getdev_ex_api);
    tcase_add_test(tc_utils, test_wolfip_ll_frame_mtu_enforces_minimum);
    tcase_add_test(tc_utils, test_transport_capacity_helpers_cover_guard_paths);
    tcase_add_test(tc_utils, test_tx_has_writable_space_icmp_accepts_minimal_packet);
    tcase_add_test(tc_utils, test_wolfip_if_for_local_ip_single_interface_falls_back_to_zero);
    tcase_add_test(tc_utils, test_wolfip_mtu_set_get_api);
    tcase_add_test(tc_utils, test_wolfip_ll_at_and_ipconf_at_invalid);
    tcase_add_test(tc_utils, test_ip_is_local_conf_variants);
#if WOLFIP_ENABLE_LOOPBACK
    tcase_add_test(tc_utils, test_wolfip_loopback_defaults);
    tcase_add_test(tc_utils, test_wolfip_loopback_send_paths);
    tcase_add_test(tc_utils, test_wolfip_loopback_send_drops_oversize);
    tcase_add_test(tc_utils, test_wolfip_loopback_send_null_container);
    tcase_add_test(tc_utils, test_wolfip_loopback_send_rejects_null_args);
#endif
    tcase_add_test(tc_utils, test_wolfip_send_port_unreachable_ignores_missing_link_sender);
    tcase_add_test(tc_utils, test_wolfip_send_port_unreachable_non_ethernet_skips_eth_filter);
    tcase_add_test(tc_utils, test_tcp_adv_win_clamps_and_applies_window_scale);
    tcase_add_test(tc_utils, test_tcp_segment_acceptable_zero_window_and_overlap_cases);
    tcase_add_test(tc_utils, test_tcp_segment_acceptable_counts_syn_in_segment_length);
    tcase_add_test(tc_utils, test_wolfip_ipconfig_ex_per_interface);
    tcase_add_test(tc_utils, test_wolfip_poll_executes_timers_and_callbacks);
    tcase_add_test(tc_utils, test_wolfip_poll_drains_all_expired_timers_in_one_pass);
    tcase_add_test(tc_utils, test_wolfip_poll_preserves_tcp_events_raised_during_callback);
    tcase_add_test(tc_utils, test_wolfip_poll_limits_device_drain_to_poll_budget);
    tcase_add_test(tc_utils, test_filter_notify_tcp_metadata);
    tcase_add_test(tc_utils, test_filter_dispatch_no_callback);
    tcase_add_test(tc_utils, test_filter_dispatch_mask_not_set);
    tcase_add_test(tc_utils, test_filter_dispatch_lock_blocks);
    tcase_add_test(tc_utils, test_filter_dispatch_meta_null_initializes);
    tcase_add_test(tc_utils, test_filter_socket_event_unknown_proto);
    tcase_add_test(tc_utils, test_filter_socket_event_null_socket_uses_primary_defaults);
    tcase_add_test(tc_utils, test_filter_socket_event_proto_variants);
    tcase_add_test(tc_utils, test_filter_setters_and_get_mask);
    tcase_add_test(tc_utils, test_sock_socket_errors);
    tcase_add_test(tc_utils, test_sock_socket_udp_protocol_zero);
    tcase_add_test(tc_utils, test_sock_socket_full_tables);
    tcase_add_test(tc_utils, test_filter_mask_for_proto_variants);
    tcase_add_test(tc_utils, test_filter_dispatch_paths);
    tcase_add_test(tc_utils, test_sock_wrappers_basic);
    tcase_add_test(tc_utils, test_sock_error_paths);
    tcase_add_test(tc_utils, test_sock_name_and_opt_errors);
    tcase_add_test(tc_utils, test_inline_helpers);
    tcase_add_test(tc_utils, test_sock_bind_wrong_family);
    tcase_add_test(tc_utils, test_sock_bind_invalid_fd);
    tcase_add_test(tc_utils, test_sock_bind_tcp_state_not_closed);
    tcase_add_test(tc_utils, test_sock_bind_tcp_filter_blocks);
    tcase_add_test(tc_utils, test_sock_bind_udp_src_port_nonzero);
    tcase_add_test(tc_utils, test_sock_bind_udp_filter_blocks);
    tcase_add_test(tc_utils, test_sock_bind_icmp_success);
    tcase_add_test(tc_utils, test_sock_connect_wrong_family);
    tcase_add_test(tc_utils, test_sock_accept_error_paths);
    tcase_add_test(tc_utils, test_sock_accept_non_tcp_socket_sets_addrlen);
    tcase_add_test(tc_utils, test_sock_accept_null_addr_with_addrlen);
    tcase_add_test(tc_utils, test_sock_recvfrom_short_addrlen);
    tcase_add_test(tc_utils, test_sock_recvfrom_udp_short_addrlen);
    tcase_add_test(tc_utils, test_sock_recvfrom_icmp_short_addrlen);
    tcase_add_test(tc_utils, test_sock_recvfrom_udp_fifo_alignment);
    tcase_add_test(tc_utils, test_sock_recvfrom_tcp_close_wait_sets_readable);
    tcase_add_test(tc_utils, test_sock_recvfrom_udp_readable_stays_when_queue_nonempty);
    tcase_add_test(tc_utils, test_sock_bind_non_local_ip_fails);
    tcase_add_test(tc_utils, test_sock_connect_bad_addrlen);
    tcase_add_test(tc_utils, test_sock_connect_tcp_bad_addrlen);
    tcase_add_test(tc_utils, test_sock_connect_invalid_args);
    tcase_add_test(tc_utils, test_sock_connect_invalid_tcp_fd);
    tcase_add_test(tc_utils, test_sock_connect_udp_invalid_fd);
    tcase_add_test(tc_utils, test_sock_connect_udp_wrong_family);
    tcase_add_test(tc_utils, test_sock_connect_udp_short_addrlen);
    tcase_add_test(tc_utils, test_sock_connect_icmp_invalid_fd);
    tcase_add_test(tc_utils, test_sock_connect_udp_sets_local_ip_from_conf);
    tcase_add_test(tc_utils, test_sock_connect_udp_falls_back_to_primary);
    tcase_add_test(tc_utils, test_sock_connect_udp_primary_missing);
    tcase_add_test(tc_utils, test_sock_connect_udp_bound_local_ip_no_match);
    tcase_add_test(tc_utils, test_sock_connect_udp_bound_local_ip_match);
    tcase_add_test(tc_utils, test_sock_connect_icmp_sets_local_ip_from_conf);
    tcase_add_test(tc_utils, test_sock_connect_icmp_bound_local_ip_match);
    tcase_add_test(tc_utils, test_sock_connect_icmp_wrong_family);
    tcase_add_test(tc_utils, test_sock_connect_icmp_local_ip_pre_set);
    tcase_add_test(tc_utils, test_sock_connect_icmp_conf_null);
    tcase_add_test(tc_utils, test_sock_connect_icmp_falls_back_to_primary);
    tcase_add_test(tc_utils, test_sock_connect_icmp_primary_ip_any);
    tcase_add_test(tc_utils, test_sock_connect_icmp_primary_ip_fallback);
    tcase_add_test(tc_utils, test_sock_connect_tcp_established_returns_zero);
    tcase_add_test(tc_utils, test_sock_connect_tcp_bound_local_ip_match);
    tcase_add_test(tc_utils, test_sock_connect_tcp_bound_local_ip_no_match);
    tcase_add_test(tc_utils, test_sock_connect_tcp_filter_blocks);
    tcase_add_test(tc_utils, test_sock_connect_tcp_local_ip_from_conf);
    tcase_add_test(tc_utils, test_sock_connect_tcp_local_ip_from_primary);
    tcase_add_test(tc_utils, test_sock_connect_tcp_primary_ip_fallback);
    tcase_add_test(tc_utils, test_sock_connect_tcp_conf_null_primary_null);
    tcase_add_test(tc_utils, test_sock_connect_tcp_state_not_closed);
    tcase_add_test(tc_utils, test_sock_accept_negative_fd);
    tcase_add_test(tc_utils, test_sock_accept_invalid_tcp_fd);
    tcase_add_test(tc_utils, test_sock_accept_success_sets_addr);
    tcase_add_test(tc_utils, test_sock_accept_no_available_socket);
    tcase_add_test(tc_utils, test_sock_accept_no_free_socket_syn_rcvd);
    tcase_add_test(tc_utils, test_sock_accept_listen_no_connection);
    tcase_add_test(tc_utils, test_sock_accept_bound_local_ip_no_match);
    tcase_add_test(tc_utils, test_sock_accept_starts_rto_timer);
    tcase_add_test(tc_utils, test_sock_accept_initializes_snd_una);
    tcase_add_test(tc_utils, test_sock_accept_clones_half_open_state_and_queues_synack);
    tcase_add_test(tc_utils, test_sock_accept_synack_retransmission);
    tcase_add_test(tc_utils, test_sock_accept_synack_window_not_scaled);
    tcase_add_test(tc_utils, test_sock_accept_ack_transitions_to_established);
    tcase_add_test(tc_utils, test_sock_sendto_error_paths);
    tcase_add_test(tc_utils, test_sock_sendto_null_buf_or_len_zero);
    tcase_add_test(tc_utils, test_sock_sendto_tcp_not_established);
    tcase_add_test(tc_utils, test_sock_sendto_tcp_close_wait_allowed);
    tcase_add_test(tc_utils, test_sock_recvfrom_tcp_states);
    tcase_add_test(tc_utils, test_sock_recvfrom_tcp_close_wait_empty_returns_zero);
    tcase_add_test(tc_utils, test_sock_recvfrom_tcp_close_wait_with_data);
    tcase_add_test(tc_utils, test_sock_recvfrom_tcp_established_sets_readable);
    tcase_add_test(tc_utils, test_sock_recvfrom_tcp_established_no_remaining_data);
    tcase_add_test(tc_utils, test_tcp_recv_does_not_cancel_rto_timer);
    tcase_add_test(tc_utils, test_sock_recvfrom_invalid_socket_ids);
    tcase_add_test(tc_utils, test_sock_recvfrom_non_socket);
    tcase_add_test(tc_utils, test_sock_recvfrom_icmp_success);
#ifdef DEBUG_UDP
    tcase_add_test(tc_utils, test_wolfip_print_udp_short_len_no_oob);
#endif
    tcase_add_test(tc_utils, test_sock_recvfrom_icmp_readable_stays_when_queue_nonempty);
    tcase_add_test(tc_utils, test_sock_opts_unknown_level);
    tcase_add_test(tc_utils, test_sock_opts_sol_ip_unknown_optname);
    tcase_add_test(tc_utils, test_sock_setsockopt_recvttl);
    tcase_add_test(tc_utils, test_sock_setsockopt_invalid_socket);
    tcase_add_test(tc_utils, test_sock_setsockopt_recvttl_invalid_params);
    tcase_add_test(tc_utils, test_sock_getsockopt_recvttl_enabled_state);
    tcase_add_test(tc_utils, test_sock_getsockopt_invalid_socket);
    tcase_add_test(tc_utils, test_sock_can_read_write_paths);
    tcase_add_test(tc_utils, test_sock_getsockopt_recvttl_invalid_params);
    tcase_add_test(tc_utils, test_sock_get_recv_ttl_invalid_socket);
    tcase_add_test(tc_utils, test_sock_accept_wrong_state);
    tcase_add_test(tc_utils, test_sock_get_recv_ttl_disabled);
    tcase_add_test(tc_utils, test_sock_get_recv_ttl_null);
    tcase_add_test(tc_utils, test_sock_connect_tcp_states);
    tcase_add_test(tc_utils, test_sock_listen_errors);
    tcase_add_test(tc_utils, test_sock_getpeername_errors);
    tcase_add_test(tc_utils, test_sock_getsockname_errors);
    tcase_add_test(tc_utils, test_sock_getsockname_null_addr);
    tcase_add_test(tc_utils, test_sock_getsockname_invalid_socket_ids);
    tcase_add_test(tc_utils, test_sock_getsockname_icmp_success);
    tcase_add_test(tc_utils, test_register_callback_variants);
    tcase_add_test(tc_utils, test_sock_connect_udp_bound_ip_not_local);
    tcase_add_test(tc_utils, test_sock_connect_udp_bound_ip_success);
    tcase_add_test(tc_utils, test_sock_connect_udp_primary_fallback);
    tcase_add_test(tc_utils, test_sock_connect_icmp_primary_fallback);
    tcase_add_test(tc_utils, test_sock_connect_tcp_filter_drop);
    tcase_add_test(tc_utils, test_sock_connect_tcp_src_port_low);
    tcase_add_test(tc_utils, test_sock_connect_tcp_initial_seq_randomized);
    tcase_add_test(tc_utils, test_sock_connect_tcp_txbuf_full_does_not_enter_syn_sent);
    tcase_add_test(tc_utils, test_sock_sendto_more_error_paths);
    tcase_add_test(tc_utils, test_sock_sendto_udp_no_dest);
    tcase_add_test(tc_utils, test_sock_sendto_udp_sets_dest_and_assigns);
    tcase_add_test(tc_utils, test_sock_sendto_udp_addrlen_short);
    tcase_add_test(tc_utils, test_sock_sendto_udp_len_too_large);
    tcase_add_test(tc_utils, test_sock_sendto_udp_fifo_full);
    tcase_add_test(tc_utils, test_sock_sendto_icmp_len_invalid);
    tcase_add_test(tc_utils, test_sock_sendto_icmp_fifo_full);
    tcase_add_test(tc_utils, test_sock_sendto_icmp_addrlen_short);
    tcase_add_test(tc_utils, test_sock_sendto_icmp_remote_zero);
    tcase_add_test(tc_utils, test_sock_sendto_icmp_assigns_src_port_and_sets_echo_id);
    tcase_add_test(tc_utils, test_sock_sendto_invalid_socket_ids);
    tcase_add_test(tc_utils, test_sock_sendto_non_socket_returns_minus_one);
    tcase_add_test(tc_utils, test_sock_sendto_udp_remote_ip_zero);
    tcase_add_test(tc_utils, test_sock_sendto_udp_primary_ip_fallback);
    tcase_add_test(tc_utils, test_sock_sendto_udp_zero_port_in_addr);
    tcase_add_test(tc_utils, test_sock_sendto_udp_src_port_low_adjusts);
    tcase_add_test(tc_utils, test_sock_sendto_udp_local_ip_conf_null);
    tcase_add_test(tc_utils, test_sock_sendto_udp_local_ip_from_primary);
    tcase_add_test(tc_utils, test_sock_sendto_tcp_txbuf_full);
    tcase_add_test(tc_utils, test_sock_sendto_tcp_partial_send_only);
    tcase_add_test(tc_utils, test_sock_sendto_tcp_multiple_segments_flags);
    tcase_add_test(tc_utils, test_sock_sendto_udp_fifo_push_fails_returns_eagain);
    tcase_add_test(tc_utils, test_sock_sendto_icmp_fifo_push_fails_returns_eagain);
    tcase_add_test(tc_utils, test_sock_sendto_icmp_src_port_zero_random_zero_sets_one);
    tcase_add_test(tc_utils, test_sock_sendto_icmp_non_echo_no_set_id);
    tcase_add_test(tc_utils, test_sock_sendto_icmp_local_ip_from_primary);
    tcase_add_test(tc_utils, test_sock_sendto_icmp_local_ip_pre_set);
    tcase_add_test(tc_utils, test_sock_sendto_icmp_conf_null_primary_null);
    tcase_add_test(tc_utils, test_sock_recvfrom_icmp_paths);
    tcase_add_test(tc_utils, test_sock_recvfrom_udp_payload_too_long);
    tcase_add_test(tc_utils, test_sock_recvfrom_icmp_payload_too_long);
    tcase_add_test(tc_utils, test_sock_accept_success);
    tcase_add_test(tc_utils, test_sock_accept_synack_rto_txbuf_full_does_not_consume_retry);
    tcase_add_test(tc_utils, test_sock_accept_ack_with_payload_completes_handshake);
    tcase_add_test(tc_utils, test_sock_accept_ack_at_snd_nxt_completes_handshake);
    tcase_add_test(tc_utils, test_sock_accept_ack_psh_with_payload_completes_handshake);
    tcase_add_test(tc_utils, test_sock_accept_filtered_out);
    tcase_add_test(tc_utils, test_poll_tcp_ack_only_skips_send);
    tcase_add_test(tc_utils, test_poll_tcp_send_on_arp_hit);
    tcase_add_test(tc_utils, test_poll_tcp_residual_window_gates_data_segment);
    tcase_add_test(tc_utils, test_poll_tcp_residual_window_allows_exact_fit);
    tcase_add_test(tc_utils, test_poll_tcp_zero_window_arms_persist);
    tcase_add_test(tc_utils, test_tcp_persist_start_stops_when_window_reopens_or_no_unsent_payload);
    tcase_add_test(tc_utils, test_tcp_persist_helpers_ignore_non_tcp_and_null_inputs);
    tcase_add_test(tc_utils, test_tcp_has_pending_unsent_payload_ignores_zero_ip_len_ack_only_desc);
    tcase_add_test(tc_utils, test_tcp_initial_cwnd_caps_to_iw10_and_half_rwnd);
    tcase_add_test(tc_utils, test_tcp_persist_cb_sends_one_byte_probe);
    tcase_add_test(tc_utils, test_tcp_zero_wnd_probe_rejects_invalid_inputs_and_empty_payload);
    tcase_add_test(tc_utils, test_tcp_zero_wnd_probe_skips_ack_only_segment);
    tcase_add_test(tc_utils, test_tcp_zero_wnd_probe_selects_middle_byte_at_snd_una);
    tcase_add_test(tc_utils, test_tcp_persist_probe_byte_matches_snd_una_offset);
    tcase_add_test(tc_utils, test_tcp_zero_wnd_probe_arp_miss_requests_resolution);
    tcase_add_test(tc_utils, test_tcp_rto_cb_marks_snd_una_payload_for_retransmit);
    tcase_add_test(tc_utils, test_tcp_rto_cb_clears_bookkeeping_when_no_payload_pending);
    tcase_add_test(tc_utils, test_tcp_rto_cb_closes_socket_when_backoff_exhausted);
    tcase_add_test(tc_utils, test_tcp_input_window_reopen_stops_persist);
    tcase_add_test(tc_utils, test_tcp_persist_cb_stops_when_state_invalid);
    tcase_add_test(tc_utils, test_tcp_persist_cb_stops_when_window_reopens);
    tcase_add_test(tc_utils, test_poll_tcp_arp_request_on_miss);
    tcase_add_test(tc_utils, test_poll_udp_send_on_arp_hit);
    tcase_add_test(tc_utils, test_poll_udp_send_on_arp_miss_requests_arp_and_retains_queue);
    tcase_add_test(tc_utils, test_poll_icmp_send_on_arp_hit);
    tcase_add_test(tc_utils, test_poll_icmp_send_on_arp_miss_requests_arp_and_retains_queue);
    tcase_add_test(tc_utils, test_dhcp_timer_cb_paths);
    tcase_add_test(tc_utils, test_regression_dhcp_lease_expiry_deconfigures_address);
    tcase_add_test(tc_utils, test_dhcp_timer_cb_send_failure_does_not_consume_retry_budget);
    tcase_add_test(tc_utils, test_dhcp_client_init_and_bound);
    tcase_add_test(tc_utils, test_dhcp_client_init_bind_failure_closes_socket);
    tcase_add_test(tc_utils, test_dhcp_send_request_renewing_sets_ciaddr_and_rebind_deadline);
    tcase_add_test(tc_utils, test_dhcp_send_request_rebinding_broadcasts_to_lease_expiry);
    tcase_add_test(tc_utils, test_dhcp_send_request_send_failure_retries_next_tick);
    tcase_add_test(tc_utils, test_dhcp_send_discover_send_failure_retries_next_tick);
    tcase_add_test(tc_utils, test_dhcp_messages_set_secs_from_process_start);
    tcase_add_test(tc_utils, test_dhcp_poll_offer_and_ack);
    tcase_add_test(tc_utils, test_dhcp_poll_renewing_ack_binds_client);
    tcase_add_test(tc_utils, test_dhcp_poll_rebinding_ack_binds_client);
    tcase_add_test(tc_utils, test_regression_dhcp_nak_deconfigures_address_during_renew_and_rebind);
    tcase_add_test(tc_utils, test_dns_callback_ptr_response);
    tcase_add_test(tc_utils, test_udp_try_recv_short_frame);
    tcase_add_test(tc_utils, test_udp_try_recv_filter_drop);
    tcase_add_test(tc_utils, test_udp_try_recv_dhcp_running_local_zero);
    tcase_add_test(tc_utils, test_udp_try_recv_short_expected_len);
    tcase_add_test(tc_utils, test_udp_try_recv_len_below_header_rejected);
    tcase_add_test(tc_utils, test_udp_try_recv_conf_null);
    tcase_add_test(tc_utils, test_udp_try_recv_remote_ip_matches_local_ip);
    tcase_add_test(tc_utils, test_udp_try_recv_unmatched_port_sends_icmp_unreachable);
    tcase_add_test(tc_utils, test_udp_try_recv_unmatched_nonlocal_dst_does_not_send_icmp);
    tcase_add_test(tc_utils, test_udp_try_recv_full_fifo_drop_does_not_set_readable_or_send_icmp);
    tcase_add_test(tc_utils, test_dns_callback_bad_flags);
    tcase_add_test(tc_utils, test_dns_callback_truncated_response_aborts_query);
    tcase_add_test(tc_utils, test_dns_callback_bad_name);
    tcase_add_test(tc_utils, test_dns_callback_short_header_ignored);
    tcase_add_test(tc_utils, test_dns_callback_wrong_id_ignored);
    tcase_add_test(tc_utils, test_dns_callback_non_in_a_answer_ignored);
    tcase_add_test(tc_utils, test_dns_callback_non_in_ptr_answer_ignored);
    tcase_add_test(tc_utils, test_dns_callback_malformed_compressed_name_aborts_query);
    tcase_add_test(tc_utils, test_dns_callback_abort_clears_query_state);
    tcase_add_test(tc_utils, test_dns_abort_query_null_noop);
    tcase_add_test(tc_utils, test_tcp_input_ttl_zero_local_ack_still_processes);
    tcase_add_test(tc_utils, test_dns_callback_bad_rr_rdlen);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_no_match);
    tcase_add_test(tc_utils, test_dhcp_parse_ack_invalid);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_short_len_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_truncated_option_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_len_lt_four_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_ignores_short_unknown_option);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_ignores_zero_len_unknown_option);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_missing_server_id_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_missing_end_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_msg_type_len_ne_1_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_ack_truncated_option_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_ack_ignores_short_unknown_option);
    tcase_add_test(tc_utils, test_dhcp_parse_ack_msg_type_len_ne_1_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_ack_len_lt_four_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_ack_ignores_zero_len_unknown_option);
    tcase_add_test(tc_utils, test_dhcp_parse_ack_missing_server_id_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_ack_missing_end_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_bad_magic_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_ack_bad_magic_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_rejects_boot_request_op);
    tcase_add_test(tc_utils, test_dhcp_parse_ack_rejects_boot_request_op);
    tcase_add_test(tc_utils, test_dhcp_parse_offer_zero_len_option_rejected);
    tcase_add_test(tc_utils, test_dhcp_parse_ack_zero_len_option_rejected);
    tcase_add_test(tc_utils, test_dhcp_poll_no_data_and_wrong_state);
    tcase_add_test(tc_utils, test_dhcp_callback_null_and_off_state);
#if WOLFIP_ENABLE_FORWARDING
    tcase_add_test(tc_utils, test_forward_prepare_paths);
    tcase_add_test(tc_utils, test_forward_prepare_loopback_no_ll);
    tcase_add_test(tc_utils, test_forward_packet_invalid_if);
    tcase_add_test(tc_utils, test_forward_packet_no_send);
    tcase_add_test(tc_utils, test_forward_packet_filter_drop);
    tcase_add_test(tc_utils, test_forward_packet_send_paths);
    tcase_add_test(tc_utils, test_forward_packet_filter_drop_udp_icmp);
    tcase_add_test(tc_utils, test_ll_send_frame_non_ethernet_strips);
    tcase_add_test(tc_utils, test_ll_send_frame_non_ethernet_short_len);
    tcase_add_test(tc_utils, test_ll_send_frame_drops_oversize);
    tcase_add_test(tc_utils, test_ll_helpers_invalid_inputs);
    tcase_add_test(tc_utils, test_non_ethernet_recv_oversize_dropped);
    tcase_add_test(tc_utils, test_non_ethernet_recv_wrapper_delivers_udp_and_skips_eth_filter);
    tcase_add_test(tc_utils, test_non_ethernet_recv_ex_wrapper_delivers_udp_on_second_if);
#endif
    tcase_add_test(tc_utils, test_dns_format_ptr_name);
    tcase_add_test(tc_utils, test_dns_skip_and_copy_name);
    tcase_add_test(tc_utils, test_sock_opts_and_names);
    tcase_add_test(tc_utils, test_dns_send_query_errors);
    tcase_add_test(tc_utils, test_dns_schedule_timer_initial_jitter_and_cancel);
    tcase_add_test(tc_utils, test_dns_schedule_timer_caps_large_retry_shift);
    tcase_add_test(tc_utils, test_dns_send_query_schedules_timeout);
    tcase_add_test(tc_utils, test_dns_send_query_send_failure_clears_outstanding_state);
    tcase_add_test(tc_utils, test_dns_resend_query_uses_stored_query_buffer);
    tcase_add_test(tc_utils, test_dns_resend_query_fails_without_valid_socket);
    tcase_add_test(tc_utils, test_dns_resend_query_fails_without_cached_query_buffer);
    tcase_add_test(tc_utils, test_dns_resend_query_fails_with_null_stack);
    tcase_add_test(tc_utils, test_dns_abort_query_clears_timer_and_query_state);
    tcase_add_test(tc_utils, test_dns_timeout_retries_then_aborts_and_allows_new_query);
    tcase_add_test(tc_utils, test_dns_send_query_invalid_name);
    tcase_add_test(tc_utils, test_dns_wrapper_apis);
    tcase_add_test(tc_utils, test_wolfip_static_instance_apis);
    tcase_add_test(tc_utils, test_wolfip_ip_is_multicast_variants);
    tcase_add_test(tc_utils, test_wolfip_ip_is_broadcast_variants);
    tcase_add_test(tc_utils, test_wolfip_ip_is_broadcast_skips_unsuitable_configs);
    tcase_add_test(tc_utils, test_wolfip_ip_is_broadcast_skips_zero_mask);
    tcase_add_test(tc_utils, test_tcp_rto_cb_resets_flags_and_arms_timer);
    tcase_add_test(tc_utils, test_tcp_rto_cb_no_pending_resets_backoff);
    tcase_add_test(tc_utils, test_tcp_rto_cb_skips_unsent_desc);
    tcase_add_test(tc_utils, test_tcp_rto_cb_does_not_signal_writable_for_zero_ip_len_ack_only_desc);
    tcase_add_test(tc_utils, test_tcp_rto_cb_non_tcp_noop);
    tcase_add_test(tc_utils, test_tcp_rto_cb_non_established_noop);
    tcase_add_test(tc_utils, test_tcp_rto_cb_syn_sent_requeues_syn_and_arms_timer);
    tcase_add_test(tc_utils, test_tcp_input_synack_cancels_control_rto);
    tcase_add_test(tc_utils, test_tcp_rto_cb_last_ack_requeues_finack_and_arms_timer);
    tcase_add_test(tc_utils, test_tcp_rto_cb_last_ack_full_txbuf_keeps_retry_budget);
    tcase_add_test(tc_utils, test_tcp_ctrl_state_needs_rto_fin_wait_1_waits_for_payload_drain);
    tcase_add_test(tc_utils, test_tcp_rto_cb_fin_wait_1_with_data_uses_data_recovery);
    tcase_add_test(tc_utils, test_tcp_rto_cb_fin_wait_1_no_data_requeues_finack);
    tcase_add_test(tc_utils, test_tcp_rto_cb_fin_wait_1_no_data_full_txbuf_keeps_retry_budget);
    tcase_add_test(tc_utils, test_tcp_ack_fin_wait_1_ack_of_fin_moves_to_fin_wait_2_and_arms_timeout);
    tcase_add_test(tc_utils, test_tcp_ack_closing_ack_of_fin_moves_to_time_wait_and_stops_timer);
    tcase_add_test(tc_utils, test_tcp_rto_cb_control_retry_cap_closes_socket);
    tcase_add_test(tc_utils, test_tcp_rto_cb_cancels_existing_timer);
    tcase_add_test(tc_utils, test_tcp_rto_cb_clears_sack_and_marks_lowest_only);
    tcase_add_test(tc_utils, test_tcp_rto_cb_ssthresh_uses_inflight_not_cwnd);
    tcase_add_test(tc_utils, test_tcp_rto_cb_ssthresh_floor_two_mss);
    tcase_add_test(tc_utils, test_tcp_rto_cb_fallback_marks_lowest_sent_when_no_snd_una_cover);
    tcase_add_test(tc_utils, test_sock_close_udp_icmp);
    tcase_add_test(tc_utils, test_sock_close_invalid_fds);
    tcase_add_test(tc_utils, test_sock_close_tcp_fin_wait_1);
    tcase_add_test(tc_utils, test_sock_close_tcp_established_full_txbuf_preserves_state);
    tcase_add_test(tc_utils, test_sock_close_tcp_close_wait_full_txbuf_preserves_state);
    tcase_add_test(tc_utils, test_sock_close_tcp_other_state_closes);
    tcase_add_test(tc_utils, test_sock_close_tcp_cancels_rto_timer);
    tcase_add_test(tc_utils, test_sock_close_tcp_closed_returns_minus_one);
    tcase_add_test(tc_utils, test_tcp_syn_sent_to_established);
    tcase_add_test(tc_utils, test_tcp_input_syn_sent_unexpected_flags);
    tcase_add_test(tc_utils, test_tcp_input_syn_sent_synack_transitions);
    tcase_add_test(tc_utils, test_tcp_input_syn_sent_synack_invalid_ack_rejected);
    tcase_add_test(tc_utils, test_tcp_input_syn_listen_does_not_scale_syn_window);
    tcase_add_test(tc_utils, test_tcp_input_syn_sent_does_not_scale_synack_window);
    tcase_add_test(tc_utils, test_tcp_parse_sack_wraparound_block_accepted);
    tcase_add_test(tc_utils, test_tcp_parse_options_stops_on_truncated_or_invalid_option_length);
    tcase_add_test(tc_utils, test_tcp_parse_options_returns_when_frame_has_no_option_bytes);
    tcase_add_test(tc_utils, test_tcp_parse_options_parses_and_clamps_mixed_options);
    tcase_add_test(tc_utils, test_tcp_parse_options_parses_mss_sack_permitted_timestamp_and_two_sack_blocks);
    tcase_add_test(tc_utils, test_tcp_parse_options_ignores_unknown_option_kinds);
    tcase_add_test(tc_utils, test_tcp_parse_options_caps_sack_block_count);
    tcase_add_test(tc_utils, test_tcp_parse_options_ignores_known_kinds_with_wrong_lengths);
    tcase_add_test(tc_utils, test_tcp_input_rst_bad_seq_ignored);
    tcase_add_test(tc_utils, test_tcp_input_rst_seq_in_window_sends_ack);
    tcase_add_test(tc_utils, test_tcp_input_rst_seq_in_scaled_window_sends_ack);
    tcase_add_test(tc_utils, test_tcp_input_rst_out_of_window_does_not_update_peer_rwnd);
    tcase_add_test(tc_utils, test_tcp_input_out_of_window_payload_not_cached);
    tcase_add_test(tc_utils, test_tcp_input_rst_exact_seq_closes);
    tcase_add_test(tc_utils, test_tcp_input_syn_listen_mismatch);
    tcase_add_test(tc_utils, test_tcp_input_syn_rcvd_ack_established);
    tcase_add_test(tc_utils, test_tcp_input_syn_rcvd_ack_invalid_ack_rejected);
    tcase_add_test(tc_utils, test_tcp_input_syn_rcvd_ack_invalid_seq_rejected);
    tcase_add_test(tc_utils, test_tcp_input_filter_drop);
    tcase_add_test(tc_utils, test_tcp_input_port_mismatch_skips_socket);
    tcase_add_test(tc_utils, test_tcp_input_remote_ip_mismatch_skips_socket);
    tcase_add_test(tc_utils, test_tcp_input_local_ip_mismatch_preserves_if_idx);
    tcase_add_test(tc_utils, test_tcp_input_unmatched_ack_sends_rst);
    tcase_add_test(tc_utils, test_tcp_input_unmatched_ack_nonlocal_dst_does_not_send_rst);
    tcase_add_test(tc_utils, test_tcp_input_unmatched_syn_sends_rst_ack);
    tcase_add_test(tc_utils, test_tcp_input_unmatched_rst_is_discarded);
    tcase_add_test(tc_utils, test_tcp_input_syn_bound_ip_mismatch);
    tcase_add_test(tc_utils, test_tcp_input_syn_rcvd_ack_wrong_flags);
    tcase_add_test(tc_utils, test_tcp_input_close_wait_processes_ack);
    tcase_add_test(tc_utils, test_tcp_input_closing_processes_ack);
    tcase_add_test(tc_utils, test_tcp_input_established_ack_only_returns);
    tcase_add_test(tc_utils, test_tcp_input_syn_dst_not_local);
    tcase_add_test(tc_utils, test_tcp_input_syn_dst_outside_subnet);
    tcase_add_test(tc_utils, test_tcp_input_listen_dst_match_false);
    tcase_add_test(tc_utils, test_tcp_input_established_fin_sets_close_wait);
    tcase_add_test(tc_utils, test_tcp_input_established_fin_with_payload_queues);
    tcase_add_test(tc_utils, test_tcp_input_established_fin_payload_out_of_order_no_transition);
    tcase_add_test(tc_utils, test_tcp_input_established_fin_out_of_order_no_transition);
    tcase_add_test(tc_utils, test_tcp_rst_closes_socket);
    tcase_add_test(tc_utils, test_tcp_rst_ignored_in_listen);
    tcase_add_test(tc_utils, test_tcp_rst_syn_rcvd_returns_to_listen);
    tcase_add_test(tc_utils, test_tcp_fin_wait_1_to_closing);
    tcase_add_test(tc_utils, test_tcp_last_ack_closes_socket);
    tcase_add_test(tc_utils, test_tcp_last_ack_partial_ack_keeps_socket_and_timer);
    tcase_add_test(tc_utils, test_tcp_ack_acks_data_and_sets_writable);
    tcase_add_test(tc_utils, test_tcp_ack_duplicate_resend_clears_sent);
    tcase_add_test(tc_utils, test_tcp_ack_discards_zero_len_segment);
    tcase_add_test(tc_utils, test_tcp_ack_closes_last_ack_socket);
    tcase_add_test(tc_utils, test_tcp_ack_last_seq_match_no_close);
    tcase_add_test(tc_utils, test_tcp_ack_fresh_desc_updates_rtt_existing);
    tcase_add_test(tc_utils, test_tcp_ack_retransmitted_desc_skips_rtt_update);
    tcase_add_test(tc_utils, test_tcp_ack_duplicate_zero_len_segment_large_ack);
    tcase_add_test(tc_utils, test_tcp_ack_duplicate_seq_match_large_seg_len);
    tcase_add_test(tc_utils, test_tcp_ack_duplicate_clears_sent_flag);
    tcase_add_test(tc_utils, test_tcp_ack_duplicate_discards_zero_len_segment);
    tcase_add_test(tc_utils, test_tcp_ack_cwnd_count_wrap);
    tcase_add_test(tc_utils, test_tcp_ack_updates_rtt_and_cwnd);
    tcase_add_test(tc_utils, test_tcp_ack_uses_interface_mss_for_cwnd_growth);
    tcase_add_test(tc_utils, test_tcp_ack_last_seq_not_last_ack_state);
    tcase_add_test(tc_utils, test_tcp_ack_no_progress_when_ack_far_ahead);
    tcase_add_test(tc_utils, test_tcp_ack_coarse_rtt_sets_writable);
    tcase_add_test(tc_utils, test_tcp_ack_coarse_rtt_across_low32_wrap);
    tcase_add_test(tc_utils, test_tcp_ack_duplicate_clears_sent_large_seg_len);
    tcase_add_test(tc_utils, test_tcp_ack_duplicate_discards_zero_len_segment_far_ack);
    tcase_add_test(tc_utils, test_tcp_ack_duplicate_ssthresh_min);
    tcase_add_test(tc_utils, test_tcp_ack_progress_resets_rto_recovery_state);
    tcase_add_test(tc_utils, test_tcp_ack_cwnd_grows_when_payload_acked_is_mss_minus_options);
    tcase_add_test(tc_utils, test_tcp_ack_inflight_deflate_sets_writable_without_acked_desc);
    tcase_add_test(tc_utils, test_tcp_input_peer_rwnd_growth_sets_writable);
    tcase_add_test(tc_utils, test_tcp_input_synack_negotiates_peer_mss);
    tcase_add_test(tc_utils, test_tcp_connect_syn_advertises_interface_mss);
    tcase_add_test(tc_utils, test_tcp_connect_syn_limits_options_to_small_mtu);
    tcase_add_test(tc_utils, test_sock_sendto_tcp_respects_negotiated_peer_mss);
    tcase_add_test(tc_utils, test_sock_sendto_tcp_defaults_to_rfc_mss_when_unset_by_peer);
    tcase_add_test(tc_utils, test_sock_sendto_tcp_respects_interface_mtu);
    tcase_add_test(tc_utils, test_tcp_recv_queues_payload_and_advances_ack);
    tcase_add_test(tc_utils, test_tcp_recv_wrong_state_does_nothing);
    tcase_add_test(tc_utils, test_tcp_recv_ack_mismatch_does_nothing);
    tcase_add_test(tc_utils, test_tcp_recv_wrap_seq_ahead_not_trimmed);
    tcase_add_test(tc_utils, test_tcp_recv_close_wait_ack_match);
    tcase_add_test(tc_utils, test_tcp_recv_fin_wait_1_ack_match);
    tcase_add_test(tc_utils, test_tcp_recv_fin_wait_2_ack_match);
    tcase_add_test(tc_utils, test_tcp_recv_queue_full_sends_ack);
    tcase_add_test(tc_utils, test_tcp_process_ts_uses_ecr);
    tcase_add_test(tc_utils, test_tcp_rto_update_second_sample_rfc6298);
    tcase_add_test(tc_utils, test_tcp_process_ts_nop_then_ts);
    tcase_add_test(tc_utils, test_tcp_process_ts_skips_unknown_option);
    tcase_add_test(tc_utils, test_tcp_process_ts_no_ecr);
    tcase_add_test(tc_utils, test_tcp_process_ts_updates_rtt_when_set);
    tcase_add_test(tc_utils, test_tcp_send_syn_advertises_sack_permitted);
    tcase_add_test(tc_utils, test_tcp_build_ack_options_does_not_write_past_returned_len);
    tcase_add_test(tc_utils, test_tcp_build_ack_options_omits_ts_when_not_negotiated);
    tcase_add_test(tc_utils, test_icmp_sendto_respects_bound_local_ip_interface);
    tcase_add_test(tc_utils, test_icmp_sendto_respects_mtu_api);
    tcase_add_test(tc_utils, test_tcp_sort_sack_blocks_swaps_out_of_order);
    tcase_add_test(tc_utils, test_tcp_sort_sack_blocks_wrap_order);
    tcase_add_test(tc_utils, test_tcp_merge_sack_blocks_adjacent_and_disjoint);
    tcase_add_test(tc_utils, test_tcp_merge_sack_blocks_wrap_order);
    tcase_add_test(tc_utils, test_tcp_recv_tracks_holes_and_sack_blocks);
    tcase_add_test(tc_utils, test_tcp_rebuild_rx_sack_right_edge_wraps);
    tcase_add_test(tc_utils, test_tcp_consume_ooo_wrap_trim_and_promote);
    tcase_add_test(tc_utils, test_tcp_consume_ooo_wrap_drop_fully_acked);
    tcase_add_test(tc_utils, test_tcp_ack_sack_early_retransmit_before_three_dupack);
    tcase_add_test(tc_utils, test_tcp_input_listen_syn_without_sack_disables_sack);
    tcase_add_test(tc_utils, test_tcp_input_listen_syn_arms_control_rto);
    tcase_add_test(tc_utils, test_tcp_input_syn_sent_synack_without_sack_disables_sack);
    tcase_add_test(tc_utils, test_tcp_recv_partial_hole_fill_consumes_stored_ooo);
    tcase_add_test(tc_utils, test_tcp_ack_ignores_sack_when_not_negotiated);
    tcase_add_test(tc_utils, test_tcp_ack_malformed_sack_does_not_early_retransmit);
    tcase_add_test(tc_utils, test_tcp_ack_early_retransmit_once_per_ack);
    tcase_add_test(tc_utils, test_tcp_ack_no_sack_requires_three_dupacks);
    tcase_add_test(tc_utils, test_tcp_ack_no_sack_three_dupacks_with_zero_rwnd_triggers_retransmit);
    tcase_add_test(tc_utils, test_tcp_ack_wraparound_delta_reduces_inflight);
    tcase_add_test(tc_utils, test_tcp_ack_wraparound_delta_saturates_inflight);
    tcase_add_test(tc_utils, test_tcp_mark_unsacked_for_retransmit_wrap_seg_end);
    tcase_add_test(tc_utils, test_tcp_mark_unsacked_retransmits_partially_acked_segment);
    tcase_add_test(tc_utils, test_tcp_mark_unsacked_rescans_after_clearing_stale_sack);
    tcase_add_test(tc_utils, test_tcp_mark_unsacked_ignores_zero_ip_len_unsent_ack_only_desc);
    tcase_add_test(tc_utils, test_tcp_ack_sack_blocks_clamped_and_dropped);
    tcase_add_test(tc_utils, test_tcp_recv_ooo_capacity_limit);
    tcase_add_test(tc_utils, test_tcp_recv_overlapping_ooo_segments_coalesce_on_consume);
    tcase_add_test(tc_utils, test_tcp_input_syn_with_sack_option_enables_sack);
    tcase_add_test(tc_utils, test_tcp_input_syn_with_sack_option_respects_local_sack_offer);
    tcase_add_test(tc_utils, test_tcp_input_iplen_too_big);
    tcase_add_test(tc_utils, test_tcp_checksum_valid_passes);
    tcase_add_test(tc_utils, test_tcp_checksum_invalid_rejected);
    tcase_add_test(tc_utils, test_udp_checksum_valid_passes);
    tcase_add_test(tc_utils, test_udp_checksum_invalid_rejected);
    tcase_add_test(tc_utils, test_udp_checksum_zero_accepted);
    tcase_add_test(tc_utils, test_udp_connected_rejects_wrong_source_ip);
    tcase_add_test(tc_utils, test_ip_checksum_invalid_rejected);
    tcase_add_test(tc_utils, test_ip_checksum_valid_passes);
    tcase_add_test(tc_utils, test_tcp_input_fin_wait_2_fin_sets_ack);
    tcase_add_test(tc_utils, test_tcp_input_fin_wait_2_fin_out_of_order_no_transition);
    tcase_add_test(tc_utils, test_tcp_input_fin_wait_2_ack_with_payload_receives);
    tcase_add_test(tc_utils, test_tcp_input_fin_wait_2_fin_with_payload_queues);
    tcase_add_test(tc_utils, test_tcp_input_fin_wait_2_fin_payload_ack_mismatch_no_transition);
    tcase_add_test(tc_utils, test_tcp_sock_close_state_transitions);
    tcase_add_test(tc_utils, test_tcp_input_fin_wait_1_fin_with_payload_returns);
    tcase_add_test(tc_utils, test_tcp_input_fin_wait_1_fin_out_of_order_no_transition);
    tcase_add_test(tc_utils, test_tcp_input_fin_wait_1_fin_payload_out_of_order_no_transition);
    tcase_add_test(tc_utils, test_tcp_input_fin_wait_1_fin_payload_ack_mismatch_no_transition);
    tcase_add_test(tc_utils, test_tcp_input_header_len_below_min_dropped);
    tcase_add_test(tc_utils, test_socket_from_fd_invalid);
    tcase_add_test(tc_utils, test_socket_from_fd_valid);
    tcase_add_test(tc_utils, test_sock_close_tcp_fin_wait_1_repeated_close_keeps_fin_wait_2_path);

    tcase_add_test(tc_proto, test_arp_request_basic);
    tcase_add_test(tc_proto, test_arp_request_throttle);
    tcase_add_test(tc_proto, test_arp_request_target_ip);
    tcase_add_test(tc_proto, test_arp_request_handling);
    tcase_add_test(tc_proto, test_arp_reply_handling);
    tcase_add_test(tc_proto, test_arp_reply_unsolicited_does_not_overwrite_existing);
    tcase_add_test(tc_proto, test_arp_reply_with_pending_request_updates);
    tcase_add_test(tc_proto, test_arp_request_refreshes_existing_entry);
    tcase_add_test(tc_proto, test_arp_request_refreshes_timestamp_on_same_mac);
    tcase_add_test(tc_proto, test_arp_lookup_success);
    tcase_add_test(tc_proto, test_arp_lookup_failure);
    tcase_add_test(tc_proto, test_arp_lookup_expired_entry_rejected);
    tcase_add_test(tc_proto, test_arp_reply_updates_expired_entry);
    tcase_add_test(tc_proto, test_wolfip_recv_ex_multi_interface_arp_reply);
    tcase_add_test(tc_proto, test_forward_prepare_null_args);
    tcase_add_test(tc_proto, test_send_ttl_exceeded_filter_drop);
    tcase_add_test(tc_proto, test_send_ttl_exceeded_ip_filter_drop);
    tcase_add_test(tc_proto, test_send_ttl_exceeded_eth_filter_drop);
    tcase_add_test(tc_proto, test_send_ttl_exceeded_no_send);
    tcase_add_test(tc_proto, test_send_ttl_exceeded_non_ethernet_skips_eth_filter);
#if WOLFIP_ENABLE_FORWARDING
    tcase_add_test(tc_proto, test_wolfip_forward_ttl_exceeded_short_len_does_not_send);
#endif
    tcase_add_test(tc_proto, test_arp_request_filter_drop);
    tcase_add_test(tc_proto, test_arp_request_invalid_interface);
    tcase_add_test(tc_proto, test_arp_request_no_send_fn);
    tcase_add_test(tc_proto, test_arp_reply_filter_drop);
    tcase_add_test(tc_proto, test_arp_recv_invalid_iface);
    tcase_add_test(tc_proto, test_arp_recv_filter_drop);
    tcase_add_test(tc_proto, test_arp_queue_packet_invalid_args);
    tcase_add_test(tc_proto, test_arp_queue_packet_reuses_existing_slot);
    tcase_add_test(tc_proto, test_arp_queue_packet_same_dest_different_if);
    tcase_add_test(tc_proto, test_arp_queue_packet_uses_empty_slot);
    tcase_add_test(tc_proto, test_arp_queue_packet_drops_oversize_len);
    tcase_add_test(tc_proto, test_arp_queue_packet_slot_fallback_zero);
    tcase_add_test(tc_proto, test_arp_flush_pending_no_neighbor);
    tcase_add_test(tc_proto, test_arp_flush_pending_len_zero_clears);
    tcase_add_test(tc_proto, test_arp_flush_pending_null_stack);
    tcase_add_test(tc_proto, test_arp_flush_pending_skips_non_matching);
    tcase_add_test(tc_proto, test_arp_flush_pending_same_dest_if_idx_mismatch);
    tcase_add_test(tc_proto, test_arp_flush_pending_truncates_len);
    tcase_add_test(tc_proto, test_arp_flush_pending_processes_matching_entry);
    tcase_add_test(tc_proto, test_arp_flush_pending_match_condition_false);
    tcase_add_test(tc_proto, test_arp_queue_and_flush_matching_entry);
    tcase_add_test(tc_proto, test_arp_flush_pending_loopback_match);
    tcase_add_test(tc_proto, test_arp_store_neighbor_updates_existing);
    tcase_add_test(tc_proto, test_arp_recv_reply_updates_existing_no_duplicate);
    tcase_add_test(tc_proto, test_arp_store_neighbor_empty_slot);
    tcase_add_test(tc_proto, test_arp_store_neighbor_same_ip_diff_if);
    tcase_add_test(tc_proto, test_arp_pending_record_prefers_empty_slot);
    tcase_add_test(tc_proto, test_arp_pending_match_and_clear_time_goes_back);
    tcase_add_test(tc_proto, test_arp_store_neighbor_no_space);
    tcase_add_test(tc_proto, test_arp_store_neighbor_null_stack);
    tcase_add_test(tc_proto, test_arp_lookup_if_idx_mismatch);
    tcase_add_test(tc_proto, test_arp_request_missing_conf);
    tcase_add_test(tc_proto, test_arp_request_null_stack);
    tcase_add_test(tc_proto, test_arp_recv_request_other_ip_no_reply);
    tcase_add_test(tc_proto, test_arp_recv_null_stack);
    tcase_add_test(tc_proto, test_arp_recv_request_sends_reply);
    tcase_add_test(tc_proto, test_arp_recv_request_does_not_store_self_neighbor);
    tcase_add_test(tc_proto, test_arp_recv_request_no_send_fn);
    tcase_add_test(tc_proto, test_wolfip_if_for_local_ip_paths);
    tcase_add_test(tc_proto, test_wolfip_if_for_local_ip_null_found);
    tcase_add_test(tc_proto, test_wolfip_socket_if_idx_invalid);
    tcase_add_test(tc_proto, test_icmp_try_recv_mismatch_paths);
    tcase_add_test(tc_proto, test_icmp_try_recv_mismatch_local_ip);
    tcase_add_test(tc_proto, test_icmp_try_recv_mismatch_src_port);
    tcase_add_test(tc_proto, test_icmp_try_recv_mismatch_remote_ip);
    tcase_add_test(tc_proto, test_icmp_try_recv_full_fifo_does_not_signal_readable);
    tcase_add_test(tc_proto, test_wolfip_recv_on_not_for_us);
    tcase_add_test(tc_proto, test_wolfip_recv_on_filter_drop_eth);
#if WOLFIP_ENABLE_FORWARDING
    tcase_add_test(tc_proto, test_wolfip_recv_on_forward_ttl_exceeded);
    tcase_add_test(tc_proto, test_wolfip_recv_on_forward_arp_queue);
    tcase_add_test(tc_proto, test_wolfip_recv_on_forward_arp_hit_sends);
    tcase_add_test(tc_proto, test_wolfip_forward_non_ethernet_in_to_ethernet_out);
    tcase_add_test(tc_proto, test_wolfip_forward_ethernet_in_to_non_ethernet_out);
#endif
    tcase_add_test(tc_proto, test_select_nexthop_variants);
    tcase_add_test(tc_proto, test_route_for_ip_variants);
    tcase_add_test(tc_proto, test_route_for_ip_dest_matches_iface_ip);
    tcase_add_test(tc_proto, test_route_for_ip_matches_exact_ip_when_mask_is_zero);
    tcase_add_test(tc_proto, test_route_for_ip_no_primary_index);
    tcase_add_test(tc_proto, test_route_for_ip_null_stack);
    tcase_add_test(tc_proto, test_route_for_ip_gw_and_nonloop_fallback);
    tcase_add_test(tc_proto, test_inline_ip_helpers);
    tcase_add_test(tc_proto, test_forward_interface_variants);
    tcase_add_test(tc_proto, test_forward_interface_skips_ipaddr_any);
    tcase_add_test(tc_proto, test_forward_interface_dest_is_local_ip);
    tcase_add_test(tc_proto, test_forward_interface_short_circuit_cases);
    tcase_add_test(tc_proto, test_ip_recv_forward_ttl_exceeded);
    tcase_add_test(tc_proto, test_ip_recv_udp_with_ip_options_delivers_payload);
    tcase_add_test(tc_proto, test_ip_recv_fragmented_udp_dropped);
    tcase_add_test(tc_proto, test_ip_recv_forward_arp_queue_and_flush);
    tcase_add_test(tc_proto, test_arp_flush_pending_ttl_expired);
    tcase_add_test(tc_proto, test_wolfip_forwarding_basic);
    tcase_add_test(tc_proto, test_wolfip_forwarding_ttl_expired);
    tcase_add_test(tc_proto, test_forward_packet_ip_filter_drop);
    tcase_add_test(tc_proto, test_forward_packet_eth_filter_drop);
    tcase_add_test(tc_proto, test_loopback_dest_not_forwarded);
    tcase_add_test(tc_proto, test_tcp_listen_rejects_wrong_interface);
    tcase_add_test(tc_proto, test_tcp_listen_accepts_bound_interface);
    tcase_add_test(tc_proto, test_tcp_listen_accepts_any_interface);
    tcase_add_test(tc_proto, test_sock_connect_selects_local_ip_multi_if);
    tcase_add_test(tc_proto, test_icmp_socket_send_recv);
    tcase_add_test(tc_proto, test_icmp_input_echo_reply_queues);
    tcase_add_test(tc_proto, test_icmp_input_echo_request_reply_sent);
    tcase_add_test(tc_proto, test_icmp_input_echo_request_bad_checksum_dropped);
    tcase_add_test(tc_proto, test_icmp_input_echo_request_odd_len_reply_checksum);
    tcase_add_test(tc_proto, test_icmp_input_echo_request_dhcp_running_no_reply);
    tcase_add_test(tc_proto, test_icmp_input_echo_request_broadcast_no_reply);
    tcase_add_test(tc_proto, test_icmp_input_echo_request_directed_broadcast_no_reply);
    tcase_add_test(tc_proto, test_icmp_input_echo_request_filter_drop);
    tcase_add_test(tc_proto, test_icmp_input_echo_request_ip_filter_drop);
    tcase_add_test(tc_proto, test_icmp_input_echo_request_eth_filter_drop);
    tcase_add_test(tc_proto, test_icmp_input_filter_drop_receiving);
    tcase_add_test(tc_proto, test_icmp_input_dest_unreach_port_unreachable_keeps_established_tcp_socket);
    tcase_add_test(tc_proto, test_icmp_input_dest_unreach_frag_needed_reduces_tcp_peer_mss);
    tcase_add_test(tc_proto, test_icmp_input_dest_unreach_port_unreachable_closes_syn_sent_tcp_socket);
    tcase_add_test(tc_proto, test_icmp_input_dest_unreach_port_unreachable_quoted_ip_options_keep_established_tcp_socket);
    tcase_add_test(tc_proto, test_udp_sendto_and_recvfrom);
    tcase_add_test(tc_proto, test_udp_sendto_respects_mtu_api);
    tcase_add_test(tc_proto, test_udp_recvfrom_sets_remote_ip);
    tcase_add_test(tc_proto, test_udp_recvfrom_null_src_addr_len);
    tcase_add_test(tc_proto, test_udp_recvfrom_preserves_remote_ip);
    tcase_add_test(tc_proto, test_udp_recvfrom_null_addrlen);
    tcase_add_test(tc_proto, test_udp_recvfrom_src_equals_local_ip_does_not_persist_remote);
    tcase_add_test(tc_proto, test_dns_query_and_callback_a);
    tcase_add_test(tc_proto, test_dhcp_option_u32_macros_round_trip_wire_order);
    tcase_add_test(tc_proto, test_dhcp_parse_offer_and_ack);
    tcase_add_test(tc_proto, test_dhcp_schedule_lease_timer_defaults_t1_t2);
    tcase_add_test(tc_proto, test_dhcp_schedule_lease_timer_small_lease_clamps_t1_t2);
    tcase_add_test(tc_proto, test_dhcp_parse_offer_defaults_mask_when_missing);
    tcase_add_test(tc_proto, test_dhcp_parse_offer_rejects_mismatched_xid);
    tcase_add_test(tc_proto, test_dhcp_parse_ack_rejects_mismatched_xid);
    tcase_add_test(tc_proto, test_tcp_handshake_and_fin_close_wait);

    tcase_add_test(tc_proto, test_regression_snd_una_initialized_on_syn_rcvd);
    tcase_add_test(tc_proto, test_regression_duplicate_syn_rejected_on_established);
    tcase_add_test(tc_proto, test_regression_timer_heap_insert_bounded_by_max_timers);
    tcase_add_test(tc_proto, test_regression_icmp_inflated_ip_len);
    tcase_add_test(tc_proto, test_regression_udp_inflated_udp_len);
    tcase_add_test(tc_proto, test_regression_udp_len_below_header_discards_and_unblocks);
    tcase_add_test(tc_proto, test_regression_udp_payload_exceeds_buffer_discards_and_unblocks);
    tcase_add_test(tc_proto, test_regression_icmp_payload_exceeds_buffer_discards_and_unblocks);
    tcase_add_test(tc_proto, test_regression_tcp_ip_len_below_ip_header);
    tcase_add_test(tc_proto, test_regression_syn_on_established_not_silently_processed);
    tcase_add_test(tc_proto, test_regression_syn_on_last_ack_not_silently_processed);
    tcase_add_test(tc_proto, test_regression_full_txbuf_still_sends_pure_ack);
    tcase_add_test(tc_proto, test_regression_loopback_immediate_pure_ack_uses_loopback_ll);
    tcase_add_test(tc_proto, test_regression_tcp_tx_desc_payload_len_keeps_descriptor_layout_sanity);
    tcase_add_test(tc_proto, test_regression_fast_recovery_cwnd_ssthresh_rfc5681);
    tcase_add_test(tc_proto, test_regression_paws_rejects_stale_timestamp);
    tcase_add_test(tc_proto, test_regression_paws_accepts_wrapped_newer_timestamp);
    tcase_add_test(tc_proto, test_regression_dhcp_nak_restarts_configuration);
    tcase_add_test(tc_proto, test_regression_dhcp_boot_request_nak_ignored);
    tcase_add_test(tc_proto, test_regression_dns_rcode_error_aborts_query);
    tcase_add_test(tc_proto, test_regression_udp_checksum_zero_substituted_with_ffff);
    tcase_add_test(tc_proto, test_regression_last_ack_rejects_out_of_window_segment);
    tcase_add_test(tc_proto, test_regression_dns_id_never_zero);
    tcase_add_test(tc_proto, test_tcp_input_listen_synack_sends_rst_and_stays_listen);
    tcase_add_test(tc_proto, test_tcp_input_listen_accept_final_ack_does_not_send_rst);

    tcase_add_test(tc_utils, test_transport_checksum);
    tcase_add_test(tc_utils, test_iphdr_set_checksum);
    tcase_add_test(tc_utils, test_eth_output_add_header);
    tcase_add_test(tc_utils, test_eth_output_add_header_invalid_if);
    tcase_add_test(tc_utils, test_ip_output_add_header);
    tcase_add_test(tc_utils, test_ip_output_add_header_icmp);
    tcase_add_test(tc_utils, test_regression_icmp_ip_len_below_header);

    tcase_add_test(tc_wolfssl, test_wolfssl_io_ctx_registers_callbacks);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_setio_success);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_setio_invalid_ssl);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_setio_invalid_ctx);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_setio_invalid_fd);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_setio_no_stack);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_recv_behaviors);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_recv_invalid_desc);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_recv_fragmented_sequence);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_recv_respects_buffer_size);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_recv_want_read_keeps_buffer);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_recv_alternating_eagain_short_reads);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_send_behaviors);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_send_invalid_desc);
    tcase_add_test(tc_wolfssl, test_wolfssl_io_send_want_write_keeps_buffer);
    suite_add_tcase(s, tc_core);
    suite_add_tcase(s, tc_utils);
    suite_add_tcase(s, tc_proto);
    suite_add_tcase(s, tc_wolfssl);
    return s;
}



int main(void)
{
    int n_fail = 0;
    Suite *s;
    SRunner *sr;

    s = wolf_suite();
    sr = srunner_create(s);

    srunner_run_all(sr, CK_NORMAL);
    n_fail = srunner_ntests_failed(sr);
    srunner_free(sr);
    return (n_fail == 0) ? EXIT_SUCCESS : EXIT_FAILURE;

}