1 | /* |
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2 | * Copyright (c) 2015 embedded brains GmbH. All rights reserved. |
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3 | * |
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4 | * embedded brains GmbH |
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5 | * Dornierstr. 4 |
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6 | * 82178 Puchheim |
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7 | * Germany |
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8 | * <rtems@embedded-brains.de> |
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9 | * |
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10 | * Redistribution and use in source and binary forms, with or without |
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11 | * modification, are permitted provided that the following conditions |
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12 | * are met: |
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13 | * 1. Redistributions of source code must retain the above copyright |
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14 | * notice, this list of conditions and the following disclaimer. |
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15 | * 2. Redistributions in binary form must reproduce the above copyright |
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16 | * notice, this list of conditions and the following disclaimer in the |
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17 | * documentation and/or other materials provided with the distribution. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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29 | * SUCH DAMAGE. |
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30 | */ |
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31 | |
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32 | #include <sys/types.h> |
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33 | #include <sys/param.h> |
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34 | #include <sys/mbuf.h> |
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35 | #include <sys/malloc.h> |
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36 | #include <sys/queue.h> |
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37 | |
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38 | #include <net/if.h> |
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39 | #include <net/if_arp.h> |
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40 | #include <net/ethernet.h> |
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41 | #include <arpa/inet.h> |
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42 | #include <netinet/in.h> |
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43 | #include <netinet/ip.h> |
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44 | #include <netinet/udp.h> |
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45 | |
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46 | #include <assert.h> |
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47 | #include <errno.h> |
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48 | #include <stdio.h> |
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49 | #include <stdlib.h> |
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50 | #include <string.h> |
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51 | #include <unistd.h> |
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52 | |
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53 | #include <rtems.h> |
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54 | #include <rtems/shell.h> |
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55 | #include <rtems/telnetd.h> |
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56 | #include <rtems/bsd/zerocopy.h> |
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57 | #include <rtems/bsd/test/network-config.h> |
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58 | |
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59 | #define TEST_NAME "LIBBSD ZEROCOPY 1" |
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60 | |
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61 | #define BUFFER_COUNT 128 |
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62 | |
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63 | #define NOTIFY_THRESHOLD 64 |
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64 | |
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65 | #define DATA_SIZE (ETHERMTU - sizeof(struct ip) - sizeof(struct udphdr)) |
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66 | |
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67 | struct buffer { |
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68 | SLIST_ENTRY(buffer) link; |
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69 | u_int ref_cnt; |
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70 | char *data; |
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71 | }; |
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72 | |
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73 | struct buffer_control { |
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74 | SLIST_HEAD(buffer_list, buffer) free_list; |
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75 | rtems_interrupt_lock lock; |
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76 | size_t free_buffers; |
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77 | rtems_id waiting_task; |
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78 | struct buffer buffers[BUFFER_COUNT]; |
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79 | char data[DATA_SIZE][BUFFER_COUNT]; |
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80 | }; |
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81 | |
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82 | static struct buffer_control buffer_control; |
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83 | |
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84 | static void |
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85 | buffer_free(void *arg1, void *arg2) |
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86 | { |
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87 | struct buffer_control *bc = arg1; |
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88 | struct buffer *buf = arg2; |
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89 | rtems_status_code sc; |
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90 | rtems_interrupt_lock_context lock_context; |
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91 | rtems_id waiting_task; |
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92 | |
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93 | buf->ref_cnt = 0; |
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94 | |
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95 | rtems_interrupt_lock_acquire(&bc->lock, &lock_context); |
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96 | SLIST_INSERT_HEAD(&bc->free_list, buf, link); |
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97 | waiting_task = bc->waiting_task; |
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98 | ++bc->free_buffers; |
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99 | if (bc->free_buffers < NOTIFY_THRESHOLD) { |
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100 | waiting_task = 0; |
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101 | } |
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102 | rtems_interrupt_lock_release(&bc->lock, &lock_context); |
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103 | |
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104 | if (waiting_task != 0) { |
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105 | sc = rtems_event_transient_send(waiting_task); |
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106 | assert(sc == RTEMS_SUCCESSFUL); |
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107 | } |
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108 | } |
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109 | |
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110 | static struct mbuf * |
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111 | buffer_get(struct buffer_control *bc) |
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112 | { |
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113 | struct mbuf *m = rtems_bsd_m_gethdr(M_WAITOK, MT_DATA); |
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114 | struct buffer *buf; |
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115 | rtems_status_code sc; |
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116 | rtems_interrupt_lock_context lock_context; |
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117 | |
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118 | do { |
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119 | rtems_interrupt_lock_acquire(&bc->lock, &lock_context); |
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120 | if (SLIST_EMPTY(&bc->free_list)) { |
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121 | bc->waiting_task = rtems_task_self(); |
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122 | rtems_interrupt_lock_release(&bc->lock, &lock_context); |
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123 | |
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124 | sc = rtems_event_transient_receive(RTEMS_WAIT, |
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125 | RTEMS_NO_TIMEOUT); |
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126 | assert(sc == RTEMS_SUCCESSFUL); |
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127 | |
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128 | buf = NULL; |
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129 | } else { |
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130 | buf = SLIST_FIRST(&bc->free_list); |
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131 | SLIST_REMOVE_HEAD(&bc->free_list, link); |
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132 | --bc->free_buffers; |
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133 | rtems_interrupt_lock_release(&bc->lock, &lock_context); |
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134 | } |
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135 | } while (buf == NULL); |
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136 | |
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137 | m->m_len = DATA_SIZE; |
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138 | m->m_pkthdr.len = DATA_SIZE; |
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139 | rtems_bsd_m_extaddref(m, buf, DATA_SIZE, &buf->ref_cnt, buffer_free, |
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140 | bc, buf); |
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141 | |
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142 | return (m); |
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143 | } |
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144 | |
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145 | static void |
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146 | network_flood_task(rtems_task_argument arg) |
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147 | { |
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148 | int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); |
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149 | struct sockaddr_in addr = { |
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150 | .sin_len = sizeof(addr), |
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151 | .sin_family = AF_INET, |
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152 | .sin_port = htons(13161), |
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153 | .sin_addr = { |
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154 | .s_addr = INADDR_ANY |
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155 | } |
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156 | }; |
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157 | int rv = inet_aton(NET_CFG_PEER_IP, &addr.sin_addr); |
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158 | struct buffer_control *bc = (struct buffer_control *)arg; |
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159 | |
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160 | assert(fd >= 0); |
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161 | assert(rv != 0); |
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162 | |
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163 | while (true) { |
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164 | struct mbuf *m = buffer_get(bc); |
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165 | int error = rtems_bsd_sendto( |
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166 | fd, |
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167 | m, |
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168 | 0, |
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169 | (const struct sockaddr *) &addr |
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170 | ); |
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171 | |
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172 | if (error != 0) { |
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173 | printf("zerocopy sendto error: %s\n", strerror(error)); |
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174 | sleep(1); |
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175 | } |
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176 | } |
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177 | } |
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178 | |
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179 | static void |
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180 | telnet_shell(char *name, void *arg) |
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181 | { |
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182 | rtems_shell_env_t env; |
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183 | |
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184 | memset(&env, 0, sizeof(env)); |
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185 | |
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186 | env.devname = name; |
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187 | env.taskname = "TLNT"; |
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188 | env.login_check = NULL; |
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189 | env.forever = false; |
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190 | |
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191 | rtems_shell_main_loop(&env); |
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192 | } |
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193 | |
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194 | rtems_telnetd_config_table rtems_telnetd_config = { |
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195 | .command = telnet_shell, |
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196 | .arg = NULL, |
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197 | .priority = 2, |
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198 | .stack_size = 0, |
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199 | .login_check = NULL, |
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200 | .keep_stdio = false |
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201 | }; |
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202 | |
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203 | static void |
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204 | test_main(void) |
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205 | { |
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206 | struct buffer_control *bc = &buffer_control; |
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207 | rtems_status_code sc; |
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208 | rtems_id id; |
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209 | size_t i; |
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210 | |
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211 | sc = rtems_telnetd_initialize(); |
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212 | assert(sc == RTEMS_SUCCESSFUL); |
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213 | |
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214 | SLIST_INIT(&bc->free_list); |
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215 | |
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216 | for (i = 0; i < BUFFER_COUNT; ++i) { |
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217 | SLIST_INSERT_HEAD(&bc->free_list, &bc->buffers[i], link); |
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218 | bc->buffers[i].data = &bc->data[i][0]; |
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219 | } |
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220 | |
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221 | sc = rtems_task_create( |
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222 | rtems_build_name('F', 'L', 'O', 'D'), |
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223 | 3, |
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224 | RTEMS_MINIMUM_STACK_SIZE, |
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225 | RTEMS_DEFAULT_MODES, |
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226 | RTEMS_DEFAULT_ATTRIBUTES, |
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227 | &id |
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228 | ); |
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229 | assert(sc == RTEMS_SUCCESSFUL); |
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230 | |
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231 | sc = rtems_task_start(id, network_flood_task, (rtems_task_argument) bc); |
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232 | assert(sc == RTEMS_SUCCESSFUL); |
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233 | |
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234 | rtems_task_delete(RTEMS_SELF); |
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235 | assert(0); |
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236 | } |
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237 | |
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238 | #define DEFAULT_NETWORK_DHCPCD_ENABLE |
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239 | #define DEFAULT_NETWORK_SHELL |
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240 | |
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241 | #define CONFIGURE_MAXIMUM_DRIVERS 32 |
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242 | |
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243 | #include <rtems/bsd/test/default-network-init.h> |
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