1 | #include "test_etharp.h"
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2 |
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3 | #include "lwip/udp.h"
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4 | #include "lwip/etharp.h"
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5 | #include "netif/ethernet.h"
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6 | #include "lwip/stats.h"
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7 | #include "lwip/prot/iana.h"
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8 |
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9 | #if !LWIP_STATS || !UDP_STATS || !MEMP_STATS || !ETHARP_STATS
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10 | #error "This tests needs UDP-, MEMP- and ETHARP-statistics enabled"
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11 | #endif
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12 | #if !ETHARP_SUPPORT_STATIC_ENTRIES
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13 | #error "This test needs ETHARP_SUPPORT_STATIC_ENTRIES enabled"
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14 | #endif
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15 |
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16 | static struct netif test_netif;
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17 | static ip4_addr_t test_ipaddr, test_netmask, test_gw;
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18 | struct eth_addr test_ethaddr = {{1,1,1,1,1,1}};
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19 | struct eth_addr test_ethaddr2 = {{1,1,1,1,1,2}};
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20 | struct eth_addr test_ethaddr3 = {{1,1,1,1,1,3}};
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21 | struct eth_addr test_ethaddr4 = {{1,1,1,1,1,4}};
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22 | static int linkoutput_ctr;
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23 |
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24 | /* Helper functions */
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25 | static void
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26 | etharp_remove_all(void)
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27 | {
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28 | int i;
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29 | /* call etharp_tmr often enough to have all entries cleaned */
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30 | for(i = 0; i < 0xff; i++) {
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31 | etharp_tmr();
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32 | }
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33 | }
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34 |
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35 | static err_t
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36 | default_netif_linkoutput(struct netif *netif, struct pbuf *p)
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37 | {
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38 | fail_unless(netif == &test_netif);
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39 | fail_unless(p != NULL);
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40 | linkoutput_ctr++;
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41 | return ERR_OK;
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42 | }
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43 |
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44 | static err_t
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45 | default_netif_init(struct netif *netif)
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46 | {
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47 | fail_unless(netif != NULL);
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48 | netif->linkoutput = default_netif_linkoutput;
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49 | netif->output = etharp_output;
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50 | netif->mtu = 1500;
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51 | netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP;
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52 | netif->hwaddr_len = ETHARP_HWADDR_LEN;
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53 | return ERR_OK;
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54 | }
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55 |
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56 | static void
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57 | default_netif_add(void)
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58 | {
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59 | IP4_ADDR(&test_gw, 192,168,0,1);
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60 | IP4_ADDR(&test_ipaddr, 192,168,0,1);
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61 | IP4_ADDR(&test_netmask, 255,255,0,0);
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62 |
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63 | fail_unless(netif_default == NULL);
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64 | netif_set_default(netif_add(&test_netif, &test_ipaddr, &test_netmask,
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65 | &test_gw, NULL, default_netif_init, NULL));
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66 | netif_set_up(&test_netif);
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67 | }
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68 |
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69 | static void
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70 | default_netif_remove(void)
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71 | {
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72 | fail_unless(netif_default == &test_netif);
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73 | netif_remove(&test_netif);
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74 | }
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75 |
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76 | static void
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77 | create_arp_response(ip4_addr_t *adr)
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78 | {
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79 | int k;
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80 | struct eth_hdr *ethhdr;
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81 | struct etharp_hdr *etharphdr;
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82 | struct pbuf *p = pbuf_alloc(PBUF_RAW, sizeof(struct eth_hdr) + sizeof(struct etharp_hdr), PBUF_RAM);
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83 | if(p == NULL) {
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84 | FAIL_RET();
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85 | }
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86 | ethhdr = (struct eth_hdr*)p->payload;
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87 | etharphdr = (struct etharp_hdr*)(ethhdr + 1);
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88 |
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89 | ethhdr->dest = test_ethaddr;
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90 | ethhdr->src = test_ethaddr2;
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91 | ethhdr->type = htons(ETHTYPE_ARP);
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92 |
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93 | etharphdr->hwtype = htons(LWIP_IANA_HWTYPE_ETHERNET);
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94 | etharphdr->proto = htons(ETHTYPE_IP);
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95 | etharphdr->hwlen = ETHARP_HWADDR_LEN;
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96 | etharphdr->protolen = sizeof(ip4_addr_t);
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97 | etharphdr->opcode = htons(ARP_REPLY);
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98 |
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99 | SMEMCPY(ðarphdr->sipaddr, adr, sizeof(ip4_addr_t));
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100 | SMEMCPY(ðarphdr->dipaddr, &test_ipaddr, sizeof(ip4_addr_t));
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101 |
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102 | k = 6;
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103 | while(k > 0) {
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104 | k--;
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105 | /* Write the ARP MAC-Addresses */
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106 | etharphdr->shwaddr.addr[k] = test_ethaddr2.addr[k];
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107 | etharphdr->dhwaddr.addr[k] = test_ethaddr.addr[k];
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108 | /* Write the Ethernet MAC-Addresses */
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109 | ethhdr->dest.addr[k] = test_ethaddr.addr[k];
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110 | ethhdr->src.addr[k] = test_ethaddr2.addr[k];
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111 | }
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112 |
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113 | ethernet_input(p, &test_netif);
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114 | }
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115 |
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116 | /* Setups/teardown functions */
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117 |
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118 | static void
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119 | etharp_setup(void)
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120 | {
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121 | etharp_remove_all();
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122 | default_netif_add();
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123 | lwip_check_ensure_no_alloc(SKIP_POOL(MEMP_SYS_TIMEOUT));
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124 | }
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125 |
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126 | static void
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127 | etharp_teardown(void)
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128 | {
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129 | etharp_remove_all();
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130 | default_netif_remove();
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131 | lwip_check_ensure_no_alloc(SKIP_POOL(MEMP_SYS_TIMEOUT));
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132 | }
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133 |
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134 |
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135 | /* Test functions */
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136 |
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137 | START_TEST(test_etharp_table)
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138 | {
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139 | #if ETHARP_SUPPORT_STATIC_ENTRIES
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140 | err_t err;
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141 | #endif /* ETHARP_SUPPORT_STATIC_ENTRIES */
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142 | ssize_t idx;
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143 | const ip4_addr_t *unused_ipaddr;
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144 | struct eth_addr *unused_ethaddr;
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145 | struct udp_pcb* pcb;
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146 | LWIP_UNUSED_ARG(_i);
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147 |
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148 | if (netif_default != &test_netif) {
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149 | fail("This test needs a default netif");
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150 | }
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151 |
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152 | linkoutput_ctr = 0;
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153 |
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154 | pcb = udp_new();
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155 | fail_unless(pcb != NULL);
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156 | if (pcb != NULL) {
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157 | ip4_addr_t adrs[ARP_TABLE_SIZE + 2];
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158 | int i;
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159 | for(i = 0; i < ARP_TABLE_SIZE + 2; i++) {
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160 | IP4_ADDR(&adrs[i], 192,168,0,i+2);
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161 | }
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162 | /* fill ARP-table with dynamic entries */
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163 | for(i = 0; i < ARP_TABLE_SIZE; i++) {
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164 | struct pbuf *p = pbuf_alloc(PBUF_TRANSPORT, 10, PBUF_RAM);
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165 | fail_unless(p != NULL);
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166 | if (p != NULL) {
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167 | err_t err2;
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168 | ip_addr_t dst;
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169 | ip_addr_copy_from_ip4(dst, adrs[i]);
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170 | err2 = udp_sendto(pcb, p, &dst, 123);
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171 | fail_unless(err2 == ERR_OK);
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172 | /* etharp request sent? */
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173 | fail_unless(linkoutput_ctr == (2*i) + 1);
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174 | pbuf_free(p);
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175 |
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176 | /* create an ARP response */
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177 | create_arp_response(&adrs[i]);
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178 | /* queued UDP packet sent? */
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179 | fail_unless(linkoutput_ctr == (2*i) + 2);
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180 |
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181 | idx = etharp_find_addr(NULL, &adrs[i], &unused_ethaddr, &unused_ipaddr);
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182 | fail_unless(idx == i);
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183 | etharp_tmr();
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184 | }
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185 | }
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186 | linkoutput_ctr = 0;
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187 | #if ETHARP_SUPPORT_STATIC_ENTRIES
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188 | /* create one static entry */
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189 | err = etharp_add_static_entry(&adrs[ARP_TABLE_SIZE], &test_ethaddr3);
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190 | fail_unless(err == ERR_OK);
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191 | idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE], &unused_ethaddr, &unused_ipaddr);
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192 | fail_unless(idx == 0);
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193 | fail_unless(linkoutput_ctr == 0);
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194 | #endif /* ETHARP_SUPPORT_STATIC_ENTRIES */
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195 |
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196 | linkoutput_ctr = 0;
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197 | /* fill ARP-table with dynamic entries */
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198 | for(i = 0; i < ARP_TABLE_SIZE; i++) {
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199 | struct pbuf *p = pbuf_alloc(PBUF_TRANSPORT, 10, PBUF_RAM);
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200 | fail_unless(p != NULL);
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201 | if (p != NULL) {
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202 | err_t err2;
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203 | ip_addr_t dst;
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204 | ip_addr_copy_from_ip4(dst, adrs[i]);
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205 | err2 = udp_sendto(pcb, p, &dst, 123);
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206 | fail_unless(err2 == ERR_OK);
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207 | /* etharp request sent? */
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208 | fail_unless(linkoutput_ctr == (2*i) + 1);
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209 | pbuf_free(p);
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210 |
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211 | /* create an ARP response */
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212 | create_arp_response(&adrs[i]);
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213 | /* queued UDP packet sent? */
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214 | fail_unless(linkoutput_ctr == (2*i) + 2);
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215 |
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216 | idx = etharp_find_addr(NULL, &adrs[i], &unused_ethaddr, &unused_ipaddr);
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217 | if (i < ARP_TABLE_SIZE - 1) {
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218 | fail_unless(idx == i+1);
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219 | } else {
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220 | /* the last entry must not overwrite the static entry! */
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221 | fail_unless(idx == 1);
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222 | }
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223 | etharp_tmr();
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224 | }
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225 | }
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226 | #if ETHARP_SUPPORT_STATIC_ENTRIES
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227 | /* create a second static entry */
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228 | err = etharp_add_static_entry(&adrs[ARP_TABLE_SIZE+1], &test_ethaddr4);
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229 | fail_unless(err == ERR_OK);
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230 | idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE], &unused_ethaddr, &unused_ipaddr);
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231 | fail_unless(idx == 0);
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232 | idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE+1], &unused_ethaddr, &unused_ipaddr);
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233 | fail_unless(idx == 2);
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234 | /* and remove it again */
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235 | err = etharp_remove_static_entry(&adrs[ARP_TABLE_SIZE+1]);
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236 | fail_unless(err == ERR_OK);
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237 | idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE], &unused_ethaddr, &unused_ipaddr);
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238 | fail_unless(idx == 0);
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239 | idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE+1], &unused_ethaddr, &unused_ipaddr);
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240 | fail_unless(idx == -1);
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241 | #endif /* ETHARP_SUPPORT_STATIC_ENTRIES */
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242 |
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243 | /* check that static entries don't time out */
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244 | etharp_remove_all();
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245 | idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE], &unused_ethaddr, &unused_ipaddr);
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246 | fail_unless(idx == 0);
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247 |
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248 | #if ETHARP_SUPPORT_STATIC_ENTRIES
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249 | /* remove the first static entry */
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250 | err = etharp_remove_static_entry(&adrs[ARP_TABLE_SIZE]);
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251 | fail_unless(err == ERR_OK);
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252 | idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE], &unused_ethaddr, &unused_ipaddr);
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253 | fail_unless(idx == -1);
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254 | idx = etharp_find_addr(NULL, &adrs[ARP_TABLE_SIZE+1], &unused_ethaddr, &unused_ipaddr);
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255 | fail_unless(idx == -1);
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256 | #endif /* ETHARP_SUPPORT_STATIC_ENTRIES */
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257 |
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258 | udp_remove(pcb);
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259 | }
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260 | }
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261 | END_TEST
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262 |
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263 |
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264 | /** Create the suite including all tests for this module */
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265 | Suite *
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266 | etharp_suite(void)
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267 | {
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268 | testfunc tests[] = {
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269 | TESTFUNC(test_etharp_table)
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270 | };
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271 | return create_suite("ETHARP", tests, sizeof(tests)/sizeof(testfunc), etharp_setup, etharp_teardown);
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272 | }
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