// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2015 National Instruments * * (C) Copyright 2015 * Joe Hershberger */ #include #include #include #include #include #include #include #include #include #include #include #include #define DM_TEST_ETH_NUM 4 static int dm_test_eth(struct unit_test_state *uts) { net_ping_ip = string_to_ip("1.1.2.2"); env_set("ethact", "eth@10002000"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10002000", env_get("ethact")); env_set("ethact", "eth@10003000"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10003000", env_get("ethact")); env_set("ethact", "eth@10004000"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10004000", env_get("ethact")); return 0; } DM_TEST(dm_test_eth, DM_TESTF_SCAN_FDT); static int dm_test_eth_alias(struct unit_test_state *uts) { net_ping_ip = string_to_ip("1.1.2.2"); env_set("ethact", "eth0"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10002000", env_get("ethact")); env_set("ethact", "eth1"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10004000", env_get("ethact")); /* Expected to fail since eth2 is not defined in the device tree */ env_set("ethact", "eth2"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10002000", env_get("ethact")); env_set("ethact", "eth5"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10003000", env_get("ethact")); return 0; } DM_TEST(dm_test_eth_alias, DM_TESTF_SCAN_FDT); static int dm_test_eth_prime(struct unit_test_state *uts) { net_ping_ip = string_to_ip("1.1.2.2"); /* Expected to be "eth@10003000" because of ethprime variable */ env_set("ethact", NULL); env_set("ethprime", "eth5"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10003000", env_get("ethact")); /* Expected to be "eth@10002000" because it is first */ env_set("ethact", NULL); env_set("ethprime", NULL); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10002000", env_get("ethact")); return 0; } DM_TEST(dm_test_eth_prime, DM_TESTF_SCAN_FDT); /** * This test case is trying to test the following scenario: * - All ethernet devices are not probed * - "ethaddr" for all ethernet devices are not set * - "ethact" is set to a valid ethernet device name * * With Sandbox default test configuration, all ethernet devices are * probed after power-up, so we have to manually create such scenario: * - Remove all ethernet devices * - Remove all "ethaddr" environment variables * - Set "ethact" to the first ethernet device * * Do a ping test to see if anything goes wrong. */ static int dm_test_eth_act(struct unit_test_state *uts) { struct udevice *dev[DM_TEST_ETH_NUM]; const char *ethname[DM_TEST_ETH_NUM] = {"eth@10002000", "eth@10003000", "sbe5", "eth@10004000"}; const char *addrname[DM_TEST_ETH_NUM] = {"ethaddr", "eth5addr", "eth3addr", "eth1addr"}; char ethaddr[DM_TEST_ETH_NUM][18]; int i; memset(ethaddr, '\0', sizeof(ethaddr)); net_ping_ip = string_to_ip("1.1.2.2"); /* Prepare the test scenario */ for (i = 0; i < DM_TEST_ETH_NUM; i++) { ut_assertok(uclass_find_device_by_name(UCLASS_ETH, ethname[i], &dev[i])); ut_assertok(device_remove(dev[i], DM_REMOVE_NORMAL)); /* Invalidate MAC address */ strncpy(ethaddr[i], env_get(addrname[i]), 17); /* Must disable access protection for ethaddr before clearing */ env_set(".flags", addrname[i]); env_set(addrname[i], NULL); } /* Set ethact to "eth@10002000" */ env_set("ethact", ethname[0]); /* Segment fault might happen if something is wrong */ ut_asserteq(-ENODEV, net_loop(PING)); for (i = 0; i < DM_TEST_ETH_NUM; i++) { /* Restore the env */ env_set(".flags", addrname[i]); env_set(addrname[i], ethaddr[i]); /* Probe the device again */ ut_assertok(device_probe(dev[i])); } env_set(".flags", NULL); env_set("ethact", NULL); return 0; } DM_TEST(dm_test_eth_act, DM_TESTF_SCAN_FDT); /* The asserts include a return on fail; cleanup in the caller */ static int _dm_test_eth_rotate1(struct unit_test_state *uts) { /* Make sure that the default is to rotate to the next interface */ env_set("ethact", "eth@10004000"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10002000", env_get("ethact")); /* If ethrotate is no, then we should fail on a bad MAC */ env_set("ethact", "eth@10004000"); env_set("ethrotate", "no"); ut_asserteq(-EINVAL, net_loop(PING)); ut_asserteq_str("eth@10004000", env_get("ethact")); return 0; } static int _dm_test_eth_rotate2(struct unit_test_state *uts) { /* Make sure we can skip invalid devices */ env_set("ethact", "eth@10004000"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10004000", env_get("ethact")); /* Make sure we can handle device name which is not eth# */ env_set("ethact", "sbe5"); ut_assertok(net_loop(PING)); ut_asserteq_str("sbe5", env_get("ethact")); return 0; } static int dm_test_eth_rotate(struct unit_test_state *uts) { char ethaddr[18]; int retval; /* Set target IP to mock ping */ net_ping_ip = string_to_ip("1.1.2.2"); /* Invalidate eth1's MAC address */ memset(ethaddr, '\0', sizeof(ethaddr)); strncpy(ethaddr, env_get("eth1addr"), 17); /* Must disable access protection for eth1addr before clearing */ env_set(".flags", "eth1addr"); env_set("eth1addr", NULL); retval = _dm_test_eth_rotate1(uts); /* Restore the env */ env_set("eth1addr", ethaddr); env_set("ethrotate", NULL); if (!retval) { /* Invalidate eth0's MAC address */ strncpy(ethaddr, env_get("ethaddr"), 17); /* Must disable access protection for ethaddr before clearing */ env_set(".flags", "ethaddr"); env_set("ethaddr", NULL); retval = _dm_test_eth_rotate2(uts); /* Restore the env */ env_set("ethaddr", ethaddr); } /* Restore the env */ env_set(".flags", NULL); return retval; } DM_TEST(dm_test_eth_rotate, DM_TESTF_SCAN_FDT); /* The asserts include a return on fail; cleanup in the caller */ static int _dm_test_net_retry(struct unit_test_state *uts) { /* * eth1 is disabled and netretry is yes, so the ping should succeed and * the active device should be eth0 */ sandbox_eth_disable_response(1, true); env_set("ethact", "eth@10004000"); env_set("netretry", "yes"); sandbox_eth_skip_timeout(); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10002000", env_get("ethact")); /* * eth1 is disabled and netretry is no, so the ping should fail and the * active device should be eth1 */ env_set("ethact", "eth@10004000"); env_set("netretry", "no"); sandbox_eth_skip_timeout(); ut_asserteq(-ENONET, net_loop(PING)); ut_asserteq_str("eth@10004000", env_get("ethact")); return 0; } static int dm_test_net_retry(struct unit_test_state *uts) { int retval; net_ping_ip = string_to_ip("1.1.2.2"); retval = _dm_test_net_retry(uts); /* Restore the env */ env_set("netretry", NULL); sandbox_eth_disable_response(1, false); return retval; } DM_TEST(dm_test_net_retry, DM_TESTF_SCAN_FDT); static int sb_check_arp_reply(struct udevice *dev, void *packet, unsigned int len) { struct eth_sandbox_priv *priv = dev_get_priv(dev); struct ethernet_hdr *eth = packet; struct arp_hdr *arp; /* Used by all of the ut_assert macros */ struct unit_test_state *uts = priv->priv; if (ntohs(eth->et_protlen) != PROT_ARP) return 0; arp = packet + ETHER_HDR_SIZE; if (ntohs(arp->ar_op) != ARPOP_REPLY) return 0; /* This test would be worthless if we are not waiting */ ut_assert(arp_is_waiting()); /* Validate response */ ut_asserteq_mem(eth->et_src, net_ethaddr, ARP_HLEN); ut_asserteq_mem(eth->et_dest, priv->fake_host_hwaddr, ARP_HLEN); ut_assert(eth->et_protlen == htons(PROT_ARP)); ut_assert(arp->ar_hrd == htons(ARP_ETHER)); ut_assert(arp->ar_pro == htons(PROT_IP)); ut_assert(arp->ar_hln == ARP_HLEN); ut_assert(arp->ar_pln == ARP_PLEN); ut_asserteq_mem(&arp->ar_sha, net_ethaddr, ARP_HLEN); ut_assert(net_read_ip(&arp->ar_spa).s_addr == net_ip.s_addr); ut_asserteq_mem(&arp->ar_tha, priv->fake_host_hwaddr, ARP_HLEN); ut_assert(net_read_ip(&arp->ar_tpa).s_addr == string_to_ip("1.1.2.4").s_addr); return 0; } static int sb_with_async_arp_handler(struct udevice *dev, void *packet, unsigned int len) { struct eth_sandbox_priv *priv = dev_get_priv(dev); struct ethernet_hdr *eth = packet; struct arp_hdr *arp = packet + ETHER_HDR_SIZE; int ret; /* * If we are about to generate a reply to ARP, first inject a request * from another host */ if (ntohs(eth->et_protlen) == PROT_ARP && ntohs(arp->ar_op) == ARPOP_REQUEST) { /* Make sure sandbox_eth_recv_arp_req() knows who is asking */ priv->fake_host_ipaddr = string_to_ip("1.1.2.4"); ret = sandbox_eth_recv_arp_req(dev); if (ret) return ret; } sandbox_eth_arp_req_to_reply(dev, packet, len); sandbox_eth_ping_req_to_reply(dev, packet, len); return sb_check_arp_reply(dev, packet, len); } static int dm_test_eth_async_arp_reply(struct unit_test_state *uts) { net_ping_ip = string_to_ip("1.1.2.2"); sandbox_eth_set_tx_handler(0, sb_with_async_arp_handler); /* Used by all of the ut_assert macros in the tx_handler */ sandbox_eth_set_priv(0, uts); env_set("ethact", "eth@10002000"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10002000", env_get("ethact")); sandbox_eth_set_tx_handler(0, NULL); return 0; } DM_TEST(dm_test_eth_async_arp_reply, DM_TESTF_SCAN_FDT); static int sb_check_ping_reply(struct udevice *dev, void *packet, unsigned int len) { struct eth_sandbox_priv *priv = dev_get_priv(dev); struct ethernet_hdr *eth = packet; struct ip_udp_hdr *ip; struct icmp_hdr *icmp; /* Used by all of the ut_assert macros */ struct unit_test_state *uts = priv->priv; if (ntohs(eth->et_protlen) != PROT_IP) return 0; ip = packet + ETHER_HDR_SIZE; if (ip->ip_p != IPPROTO_ICMP) return 0; icmp = (struct icmp_hdr *)&ip->udp_src; if (icmp->type != ICMP_ECHO_REPLY) return 0; /* This test would be worthless if we are not waiting */ ut_assert(arp_is_waiting()); /* Validate response */ ut_asserteq_mem(eth->et_src, net_ethaddr, ARP_HLEN); ut_asserteq_mem(eth->et_dest, priv->fake_host_hwaddr, ARP_HLEN); ut_assert(eth->et_protlen == htons(PROT_IP)); ut_assert(net_read_ip(&ip->ip_src).s_addr == net_ip.s_addr); ut_assert(net_read_ip(&ip->ip_dst).s_addr == string_to_ip("1.1.2.4").s_addr); return 0; } static int sb_with_async_ping_handler(struct udevice *dev, void *packet, unsigned int len) { struct eth_sandbox_priv *priv = dev_get_priv(dev); struct ethernet_hdr *eth = packet; struct arp_hdr *arp = packet + ETHER_HDR_SIZE; int ret; /* * If we are about to generate a reply to ARP, first inject a request * from another host */ if (ntohs(eth->et_protlen) == PROT_ARP && ntohs(arp->ar_op) == ARPOP_REQUEST) { /* Make sure sandbox_eth_recv_arp_req() knows who is asking */ priv->fake_host_ipaddr = string_to_ip("1.1.2.4"); ret = sandbox_eth_recv_ping_req(dev); if (ret) return ret; } sandbox_eth_arp_req_to_reply(dev, packet, len); sandbox_eth_ping_req_to_reply(dev, packet, len); return sb_check_ping_reply(dev, packet, len); } static int dm_test_eth_async_ping_reply(struct unit_test_state *uts) { net_ping_ip = string_to_ip("1.1.2.2"); sandbox_eth_set_tx_handler(0, sb_with_async_ping_handler); /* Used by all of the ut_assert macros in the tx_handler */ sandbox_eth_set_priv(0, uts); env_set("ethact", "eth@10002000"); ut_assertok(net_loop(PING)); ut_asserteq_str("eth@10002000", env_get("ethact")); sandbox_eth_set_tx_handler(0, NULL); return 0; } DM_TEST(dm_test_eth_async_ping_reply, DM_TESTF_SCAN_FDT);