1 | #include <machine/rtems-bsd-kernel-space.h> |
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2 | |
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3 | /*- |
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4 | * Copyright (c) 2004 Doug Rabson |
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5 | * Copyright (c) 1982, 1989, 1993 |
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6 | * The Regents of the University of California. All rights reserved. |
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7 | * |
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8 | * Redistribution and use in source and binary forms, with or without |
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9 | * modification, are permitted provided that the following conditions |
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10 | * are met: |
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11 | * 1. Redistributions of source code must retain the above copyright |
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12 | * notice, this list of conditions and the following disclaimer. |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * 3. Neither the name of the University nor the names of its contributors |
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17 | * may be used to endorse or promote products derived from this software |
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18 | * without specific prior written permission. |
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19 | * |
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20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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30 | * SUCH DAMAGE. |
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31 | * |
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32 | * $FreeBSD$ |
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33 | */ |
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34 | |
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35 | #include <rtems/bsd/local/opt_inet.h> |
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36 | #include <rtems/bsd/local/opt_inet6.h> |
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37 | |
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38 | #include <sys/param.h> |
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39 | #include <sys/systm.h> |
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40 | #include <sys/kernel.h> |
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41 | #include <sys/malloc.h> |
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42 | #include <sys/mbuf.h> |
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43 | #include <sys/module.h> |
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44 | #include <sys/socket.h> |
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45 | #include <sys/sockio.h> |
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46 | |
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47 | #include <net/if.h> |
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48 | #include <net/if_var.h> |
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49 | #include <net/netisr.h> |
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50 | #include <net/route.h> |
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51 | #include <net/if_llc.h> |
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52 | #include <net/if_dl.h> |
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53 | #include <net/if_types.h> |
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54 | #include <net/bpf.h> |
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55 | #include <net/firewire.h> |
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56 | #include <net/if_llatbl.h> |
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57 | |
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58 | #if defined(INET) || defined(INET6) |
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59 | #include <netinet/in.h> |
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60 | #include <netinet/in_var.h> |
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61 | #include <netinet/if_ether.h> |
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62 | #endif |
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63 | #ifdef INET6 |
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64 | #include <netinet6/nd6.h> |
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65 | #endif |
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66 | |
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67 | #include <security/mac/mac_framework.h> |
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68 | |
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69 | static MALLOC_DEFINE(M_FWCOM, "fw_com", "firewire interface internals"); |
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70 | |
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71 | struct fw_hwaddr firewire_broadcastaddr = { |
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72 | 0xffffffff, |
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73 | 0xffffffff, |
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74 | 0xff, |
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75 | 0xff, |
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76 | 0xffff, |
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77 | 0xffffffff |
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78 | }; |
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79 | |
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80 | static int |
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81 | firewire_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst, |
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82 | struct route *ro) |
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83 | { |
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84 | struct fw_com *fc = IFP2FWC(ifp); |
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85 | int error, type; |
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86 | struct m_tag *mtag; |
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87 | union fw_encap *enc; |
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88 | struct fw_hwaddr *destfw; |
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89 | uint8_t speed; |
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90 | uint16_t psize, fsize, dsize; |
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91 | struct mbuf *mtail; |
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92 | int unicast, dgl, foff; |
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93 | static int next_dgl; |
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94 | #if defined(INET) || defined(INET6) |
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95 | int is_gw = 0; |
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96 | #endif |
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97 | |
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98 | #ifdef MAC |
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99 | error = mac_ifnet_check_transmit(ifp, m); |
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100 | if (error) |
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101 | goto bad; |
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102 | #endif |
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103 | |
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104 | if (!((ifp->if_flags & IFF_UP) && |
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105 | (ifp->if_drv_flags & IFF_DRV_RUNNING))) { |
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106 | error = ENETDOWN; |
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107 | goto bad; |
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108 | } |
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109 | |
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110 | #if defined(INET) || defined(INET6) |
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111 | if (ro != NULL) |
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112 | is_gw = (ro->ro_flags & RT_HAS_GW) != 0; |
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113 | #endif |
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114 | /* |
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115 | * For unicast, we make a tag to store the lladdr of the |
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116 | * destination. This might not be the first time we have seen |
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117 | * the packet (for instance, the arp code might be trying to |
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118 | * re-send it after receiving an arp reply) so we only |
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119 | * allocate a tag if there isn't one there already. For |
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120 | * multicast, we will eventually use a different tag to store |
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121 | * the channel number. |
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122 | */ |
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123 | unicast = !(m->m_flags & (M_BCAST | M_MCAST)); |
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124 | if (unicast) { |
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125 | mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, NULL); |
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126 | if (!mtag) { |
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127 | mtag = m_tag_alloc(MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, |
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128 | sizeof (struct fw_hwaddr), M_NOWAIT); |
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129 | if (!mtag) { |
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130 | error = ENOMEM; |
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131 | goto bad; |
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132 | } |
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133 | m_tag_prepend(m, mtag); |
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134 | } |
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135 | destfw = (struct fw_hwaddr *)(mtag + 1); |
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136 | } else { |
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137 | destfw = NULL; |
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138 | } |
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139 | |
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140 | switch (dst->sa_family) { |
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141 | #ifdef INET |
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142 | case AF_INET: |
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143 | /* |
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144 | * Only bother with arp for unicast. Allocation of |
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145 | * channels etc. for firewire is quite different and |
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146 | * doesn't fit into the arp model. |
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147 | */ |
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148 | if (unicast) { |
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149 | error = arpresolve(ifp, is_gw, m, dst, |
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150 | (u_char *) destfw, NULL, NULL); |
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151 | if (error) |
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152 | return (error == EWOULDBLOCK ? 0 : error); |
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153 | } |
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154 | type = ETHERTYPE_IP; |
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155 | break; |
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156 | |
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157 | case AF_ARP: |
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158 | { |
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159 | struct arphdr *ah; |
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160 | ah = mtod(m, struct arphdr *); |
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161 | ah->ar_hrd = htons(ARPHRD_IEEE1394); |
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162 | type = ETHERTYPE_ARP; |
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163 | if (unicast) |
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164 | *destfw = *(struct fw_hwaddr *) ar_tha(ah); |
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165 | |
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166 | /* |
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167 | * The standard arp code leaves a hole for the target |
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168 | * hardware address which we need to close up. |
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169 | */ |
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170 | bcopy(ar_tpa(ah), ar_tha(ah), ah->ar_pln); |
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171 | m_adj(m, -ah->ar_hln); |
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172 | break; |
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173 | } |
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174 | #endif |
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175 | |
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176 | #ifdef INET6 |
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177 | case AF_INET6: |
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178 | if (unicast) { |
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179 | error = nd6_resolve(fc->fc_ifp, is_gw, m, dst, |
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180 | (u_char *) destfw, NULL, NULL); |
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181 | if (error) |
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182 | return (error == EWOULDBLOCK ? 0 : error); |
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183 | } |
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184 | type = ETHERTYPE_IPV6; |
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185 | break; |
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186 | #endif |
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187 | |
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188 | default: |
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189 | if_printf(ifp, "can't handle af%d\n", dst->sa_family); |
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190 | error = EAFNOSUPPORT; |
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191 | goto bad; |
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192 | } |
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193 | |
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194 | /* |
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195 | * Let BPF tap off a copy before we encapsulate. |
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196 | */ |
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197 | if (bpf_peers_present(ifp->if_bpf)) { |
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198 | struct fw_bpfhdr h; |
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199 | if (unicast) |
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200 | bcopy(destfw, h.firewire_dhost, 8); |
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201 | else |
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202 | bcopy(&firewire_broadcastaddr, h.firewire_dhost, 8); |
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203 | bcopy(&fc->fc_hwaddr, h.firewire_shost, 8); |
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204 | h.firewire_type = htons(type); |
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205 | bpf_mtap2(ifp->if_bpf, &h, sizeof(h), m); |
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206 | } |
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207 | |
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208 | /* |
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209 | * Punt on MCAP for now and send all multicast packets on the |
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210 | * broadcast channel. |
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211 | */ |
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212 | if (m->m_flags & M_MCAST) |
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213 | m->m_flags |= M_BCAST; |
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214 | |
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215 | /* |
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216 | * Figure out what speed to use and what the largest supported |
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217 | * packet size is. For unicast, this is the minimum of what we |
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218 | * can speak and what they can hear. For broadcast, lets be |
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219 | * conservative and use S100. We could possibly improve that |
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220 | * by examining the bus manager's speed map or similar. We |
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221 | * also reduce the packet size for broadcast to account for |
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222 | * the GASP header. |
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223 | */ |
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224 | if (unicast) { |
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225 | speed = min(fc->fc_speed, destfw->sspd); |
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226 | psize = min(512 << speed, 2 << destfw->sender_max_rec); |
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227 | } else { |
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228 | speed = 0; |
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229 | psize = 512 - 2*sizeof(uint32_t); |
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230 | } |
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231 | |
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232 | /* |
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233 | * Next, we encapsulate, possibly fragmenting the original |
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234 | * datagram if it won't fit into a single packet. |
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235 | */ |
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236 | if (m->m_pkthdr.len <= psize - sizeof(uint32_t)) { |
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237 | /* |
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238 | * No fragmentation is necessary. |
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239 | */ |
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240 | M_PREPEND(m, sizeof(uint32_t), M_NOWAIT); |
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241 | if (!m) { |
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242 | error = ENOBUFS; |
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243 | goto bad; |
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244 | } |
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245 | enc = mtod(m, union fw_encap *); |
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246 | enc->unfrag.ether_type = type; |
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247 | enc->unfrag.lf = FW_ENCAP_UNFRAG; |
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248 | enc->unfrag.reserved = 0; |
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249 | |
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250 | /* |
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251 | * Byte swap the encapsulation header manually. |
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252 | */ |
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253 | enc->ul[0] = htonl(enc->ul[0]); |
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254 | |
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255 | error = (ifp->if_transmit)(ifp, m); |
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256 | return (error); |
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257 | } else { |
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258 | /* |
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259 | * Fragment the datagram, making sure to leave enough |
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260 | * space for the encapsulation header in each packet. |
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261 | */ |
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262 | fsize = psize - 2*sizeof(uint32_t); |
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263 | dgl = next_dgl++; |
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264 | dsize = m->m_pkthdr.len; |
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265 | foff = 0; |
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266 | while (m) { |
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267 | if (m->m_pkthdr.len > fsize) { |
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268 | /* |
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269 | * Split off the tail segment from the |
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270 | * datagram, copying our tags over. |
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271 | */ |
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272 | mtail = m_split(m, fsize, M_NOWAIT); |
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273 | m_tag_copy_chain(mtail, m, M_NOWAIT); |
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274 | } else { |
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275 | mtail = NULL; |
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276 | } |
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277 | |
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278 | /* |
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279 | * Add our encapsulation header to this |
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280 | * fragment and hand it off to the link. |
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281 | */ |
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282 | M_PREPEND(m, 2*sizeof(uint32_t), M_NOWAIT); |
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283 | if (!m) { |
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284 | error = ENOBUFS; |
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285 | goto bad; |
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286 | } |
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287 | enc = mtod(m, union fw_encap *); |
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288 | if (foff == 0) { |
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289 | enc->firstfrag.lf = FW_ENCAP_FIRST; |
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290 | enc->firstfrag.reserved1 = 0; |
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291 | enc->firstfrag.reserved2 = 0; |
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292 | enc->firstfrag.datagram_size = dsize - 1; |
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293 | enc->firstfrag.ether_type = type; |
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294 | enc->firstfrag.dgl = dgl; |
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295 | } else { |
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296 | if (mtail) |
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297 | enc->nextfrag.lf = FW_ENCAP_NEXT; |
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298 | else |
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299 | enc->nextfrag.lf = FW_ENCAP_LAST; |
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300 | enc->nextfrag.reserved1 = 0; |
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301 | enc->nextfrag.reserved2 = 0; |
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302 | enc->nextfrag.reserved3 = 0; |
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303 | enc->nextfrag.datagram_size = dsize - 1; |
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304 | enc->nextfrag.fragment_offset = foff; |
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305 | enc->nextfrag.dgl = dgl; |
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306 | } |
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307 | foff += m->m_pkthdr.len - 2*sizeof(uint32_t); |
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308 | |
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309 | /* |
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310 | * Byte swap the encapsulation header manually. |
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311 | */ |
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312 | enc->ul[0] = htonl(enc->ul[0]); |
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313 | enc->ul[1] = htonl(enc->ul[1]); |
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314 | |
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315 | error = (ifp->if_transmit)(ifp, m); |
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316 | if (error) { |
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317 | if (mtail) |
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318 | m_freem(mtail); |
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319 | return (ENOBUFS); |
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320 | } |
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321 | |
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322 | m = mtail; |
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323 | } |
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324 | |
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325 | return (0); |
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326 | } |
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327 | |
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328 | bad: |
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329 | if (m) |
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330 | m_freem(m); |
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331 | return (error); |
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332 | } |
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333 | |
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334 | static struct mbuf * |
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335 | firewire_input_fragment(struct fw_com *fc, struct mbuf *m, int src) |
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336 | { |
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337 | union fw_encap *enc; |
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338 | struct fw_reass *r; |
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339 | struct mbuf *mf, *mprev; |
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340 | int dsize; |
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341 | int fstart, fend, start, end, islast; |
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342 | uint32_t id; |
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343 | |
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344 | /* |
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345 | * Find an existing reassembly buffer or create a new one. |
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346 | */ |
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347 | enc = mtod(m, union fw_encap *); |
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348 | id = enc->firstfrag.dgl | (src << 16); |
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349 | STAILQ_FOREACH(r, &fc->fc_frags, fr_link) |
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350 | if (r->fr_id == id) |
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351 | break; |
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352 | if (!r) { |
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353 | r = malloc(sizeof(struct fw_reass), M_TEMP, M_NOWAIT); |
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354 | if (!r) { |
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355 | m_freem(m); |
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356 | return 0; |
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357 | } |
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358 | r->fr_id = id; |
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359 | r->fr_frags = 0; |
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360 | STAILQ_INSERT_HEAD(&fc->fc_frags, r, fr_link); |
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361 | } |
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362 | |
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363 | /* |
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364 | * If this fragment overlaps any other fragment, we must discard |
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365 | * the partial reassembly and start again. |
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366 | */ |
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367 | if (enc->firstfrag.lf == FW_ENCAP_FIRST) |
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368 | fstart = 0; |
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369 | else |
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370 | fstart = enc->nextfrag.fragment_offset; |
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371 | fend = fstart + m->m_pkthdr.len - 2*sizeof(uint32_t); |
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372 | dsize = enc->nextfrag.datagram_size; |
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373 | islast = (enc->nextfrag.lf == FW_ENCAP_LAST); |
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374 | |
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375 | for (mf = r->fr_frags; mf; mf = mf->m_nextpkt) { |
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376 | enc = mtod(mf, union fw_encap *); |
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377 | if (enc->nextfrag.datagram_size != dsize) { |
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378 | /* |
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379 | * This fragment must be from a different |
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380 | * packet. |
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381 | */ |
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382 | goto bad; |
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383 | } |
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384 | if (enc->firstfrag.lf == FW_ENCAP_FIRST) |
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385 | start = 0; |
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386 | else |
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387 | start = enc->nextfrag.fragment_offset; |
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388 | end = start + mf->m_pkthdr.len - 2*sizeof(uint32_t); |
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389 | if ((fstart < end && fend > start) || |
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390 | (islast && enc->nextfrag.lf == FW_ENCAP_LAST)) { |
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391 | /* |
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392 | * Overlap - discard reassembly buffer and start |
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393 | * again with this fragment. |
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394 | */ |
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395 | goto bad; |
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396 | } |
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397 | } |
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398 | |
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399 | /* |
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400 | * Find where to put this fragment in the list. |
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401 | */ |
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402 | for (mf = r->fr_frags, mprev = NULL; mf; |
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403 | mprev = mf, mf = mf->m_nextpkt) { |
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404 | enc = mtod(mf, union fw_encap *); |
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405 | if (enc->firstfrag.lf == FW_ENCAP_FIRST) |
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406 | start = 0; |
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407 | else |
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408 | start = enc->nextfrag.fragment_offset; |
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409 | if (start >= fend) |
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410 | break; |
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411 | } |
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412 | |
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413 | /* |
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414 | * If this is a last fragment and we are not adding at the end |
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415 | * of the list, discard the buffer. |
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416 | */ |
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417 | if (islast && mprev && mprev->m_nextpkt) |
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418 | goto bad; |
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419 | |
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420 | if (mprev) { |
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421 | m->m_nextpkt = mprev->m_nextpkt; |
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422 | mprev->m_nextpkt = m; |
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423 | |
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424 | /* |
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425 | * Coalesce forwards and see if we can make a whole |
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426 | * datagram. |
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427 | */ |
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428 | enc = mtod(mprev, union fw_encap *); |
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429 | if (enc->firstfrag.lf == FW_ENCAP_FIRST) |
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430 | start = 0; |
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431 | else |
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432 | start = enc->nextfrag.fragment_offset; |
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433 | end = start + mprev->m_pkthdr.len - 2*sizeof(uint32_t); |
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434 | while (end == fstart) { |
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435 | /* |
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436 | * Strip off the encap header from m and |
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437 | * append it to mprev, freeing m. |
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438 | */ |
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439 | m_adj(m, 2*sizeof(uint32_t)); |
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440 | mprev->m_nextpkt = m->m_nextpkt; |
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441 | mprev->m_pkthdr.len += m->m_pkthdr.len; |
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442 | m_cat(mprev, m); |
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443 | |
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444 | if (mprev->m_pkthdr.len == dsize + 1 + 2*sizeof(uint32_t)) { |
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445 | /* |
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446 | * We have assembled a complete packet |
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447 | * we must be finished. Make sure we have |
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448 | * merged the whole chain. |
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449 | */ |
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450 | STAILQ_REMOVE(&fc->fc_frags, r, fw_reass, fr_link); |
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451 | free(r, M_TEMP); |
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452 | m = mprev->m_nextpkt; |
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453 | while (m) { |
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454 | mf = m->m_nextpkt; |
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455 | m_freem(m); |
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456 | m = mf; |
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457 | } |
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458 | mprev->m_nextpkt = NULL; |
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459 | |
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460 | return (mprev); |
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461 | } |
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462 | |
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463 | /* |
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464 | * See if we can continue merging forwards. |
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465 | */ |
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466 | end = fend; |
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467 | m = mprev->m_nextpkt; |
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468 | if (m) { |
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469 | enc = mtod(m, union fw_encap *); |
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470 | if (enc->firstfrag.lf == FW_ENCAP_FIRST) |
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471 | fstart = 0; |
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472 | else |
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473 | fstart = enc->nextfrag.fragment_offset; |
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474 | fend = fstart + m->m_pkthdr.len |
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475 | - 2*sizeof(uint32_t); |
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476 | } else { |
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477 | break; |
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478 | } |
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479 | } |
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480 | } else { |
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481 | m->m_nextpkt = 0; |
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482 | r->fr_frags = m; |
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483 | } |
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484 | |
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485 | return (0); |
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486 | |
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487 | bad: |
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488 | while (r->fr_frags) { |
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489 | mf = r->fr_frags; |
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490 | r->fr_frags = mf->m_nextpkt; |
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491 | m_freem(mf); |
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492 | } |
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493 | m->m_nextpkt = 0; |
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494 | r->fr_frags = m; |
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495 | |
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496 | return (0); |
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497 | } |
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498 | |
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499 | void |
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500 | firewire_input(struct ifnet *ifp, struct mbuf *m, uint16_t src) |
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501 | { |
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502 | struct fw_com *fc = IFP2FWC(ifp); |
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503 | union fw_encap *enc; |
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504 | int type, isr; |
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505 | |
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506 | /* |
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507 | * The caller has already stripped off the packet header |
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508 | * (stream or wreqb) and marked the mbuf's M_BCAST flag |
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509 | * appropriately. We de-encapsulate the IP packet and pass it |
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510 | * up the line after handling link-level fragmentation. |
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511 | */ |
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512 | if (m->m_pkthdr.len < sizeof(uint32_t)) { |
---|
513 | if_printf(ifp, "discarding frame without " |
---|
514 | "encapsulation header (len %u pkt len %u)\n", |
---|
515 | m->m_len, m->m_pkthdr.len); |
---|
516 | } |
---|
517 | |
---|
518 | m = m_pullup(m, sizeof(uint32_t)); |
---|
519 | if (m == NULL) |
---|
520 | return; |
---|
521 | enc = mtod(m, union fw_encap *); |
---|
522 | |
---|
523 | /* |
---|
524 | * Byte swap the encapsulation header manually. |
---|
525 | */ |
---|
526 | enc->ul[0] = ntohl(enc->ul[0]); |
---|
527 | |
---|
528 | if (enc->unfrag.lf != 0) { |
---|
529 | m = m_pullup(m, 2*sizeof(uint32_t)); |
---|
530 | if (!m) |
---|
531 | return; |
---|
532 | enc = mtod(m, union fw_encap *); |
---|
533 | enc->ul[1] = ntohl(enc->ul[1]); |
---|
534 | m = firewire_input_fragment(fc, m, src); |
---|
535 | if (!m) |
---|
536 | return; |
---|
537 | enc = mtod(m, union fw_encap *); |
---|
538 | type = enc->firstfrag.ether_type; |
---|
539 | m_adj(m, 2*sizeof(uint32_t)); |
---|
540 | } else { |
---|
541 | type = enc->unfrag.ether_type; |
---|
542 | m_adj(m, sizeof(uint32_t)); |
---|
543 | } |
---|
544 | |
---|
545 | if (m->m_pkthdr.rcvif == NULL) { |
---|
546 | if_printf(ifp, "discard frame w/o interface pointer\n"); |
---|
547 | if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); |
---|
548 | m_freem(m); |
---|
549 | return; |
---|
550 | } |
---|
551 | #ifdef DIAGNOSTIC |
---|
552 | if (m->m_pkthdr.rcvif != ifp) { |
---|
553 | if_printf(ifp, "Warning, frame marked as received on %s\n", |
---|
554 | m->m_pkthdr.rcvif->if_xname); |
---|
555 | } |
---|
556 | #endif |
---|
557 | |
---|
558 | #ifdef MAC |
---|
559 | /* |
---|
560 | * Tag the mbuf with an appropriate MAC label before any other |
---|
561 | * consumers can get to it. |
---|
562 | */ |
---|
563 | mac_ifnet_create_mbuf(ifp, m); |
---|
564 | #endif |
---|
565 | |
---|
566 | /* |
---|
567 | * Give bpf a chance at the packet. The link-level driver |
---|
568 | * should have left us a tag with the EUID of the sender. |
---|
569 | */ |
---|
570 | if (bpf_peers_present(ifp->if_bpf)) { |
---|
571 | struct fw_bpfhdr h; |
---|
572 | struct m_tag *mtag; |
---|
573 | |
---|
574 | mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_SENDER_EUID, 0); |
---|
575 | if (mtag) |
---|
576 | bcopy(mtag + 1, h.firewire_shost, 8); |
---|
577 | else |
---|
578 | bcopy(&firewire_broadcastaddr, h.firewire_dhost, 8); |
---|
579 | bcopy(&fc->fc_hwaddr, h.firewire_dhost, 8); |
---|
580 | h.firewire_type = htons(type); |
---|
581 | bpf_mtap2(ifp->if_bpf, &h, sizeof(h), m); |
---|
582 | } |
---|
583 | |
---|
584 | if (ifp->if_flags & IFF_MONITOR) { |
---|
585 | /* |
---|
586 | * Interface marked for monitoring; discard packet. |
---|
587 | */ |
---|
588 | m_freem(m); |
---|
589 | return; |
---|
590 | } |
---|
591 | |
---|
592 | if_inc_counter(ifp, IFCOUNTER_IBYTES, m->m_pkthdr.len); |
---|
593 | |
---|
594 | /* Discard packet if interface is not up */ |
---|
595 | if ((ifp->if_flags & IFF_UP) == 0) { |
---|
596 | m_freem(m); |
---|
597 | return; |
---|
598 | } |
---|
599 | |
---|
600 | if (m->m_flags & (M_BCAST|M_MCAST)) |
---|
601 | if_inc_counter(ifp, IFCOUNTER_IMCASTS, 1); |
---|
602 | |
---|
603 | switch (type) { |
---|
604 | #ifdef INET |
---|
605 | case ETHERTYPE_IP: |
---|
606 | isr = NETISR_IP; |
---|
607 | break; |
---|
608 | |
---|
609 | case ETHERTYPE_ARP: |
---|
610 | { |
---|
611 | struct arphdr *ah; |
---|
612 | ah = mtod(m, struct arphdr *); |
---|
613 | |
---|
614 | /* |
---|
615 | * Adjust the arp packet to insert an empty tha slot. |
---|
616 | */ |
---|
617 | m->m_len += ah->ar_hln; |
---|
618 | m->m_pkthdr.len += ah->ar_hln; |
---|
619 | bcopy(ar_tha(ah), ar_tpa(ah), ah->ar_pln); |
---|
620 | isr = NETISR_ARP; |
---|
621 | break; |
---|
622 | } |
---|
623 | #endif |
---|
624 | |
---|
625 | #ifdef INET6 |
---|
626 | case ETHERTYPE_IPV6: |
---|
627 | isr = NETISR_IPV6; |
---|
628 | break; |
---|
629 | #endif |
---|
630 | |
---|
631 | default: |
---|
632 | m_freem(m); |
---|
633 | return; |
---|
634 | } |
---|
635 | |
---|
636 | M_SETFIB(m, ifp->if_fib); |
---|
637 | netisr_dispatch(isr, m); |
---|
638 | } |
---|
639 | |
---|
640 | int |
---|
641 | firewire_ioctl(struct ifnet *ifp, u_long command, caddr_t data) |
---|
642 | { |
---|
643 | struct ifaddr *ifa = (struct ifaddr *) data; |
---|
644 | struct ifreq *ifr = (struct ifreq *) data; |
---|
645 | int error = 0; |
---|
646 | |
---|
647 | switch (command) { |
---|
648 | case SIOCSIFADDR: |
---|
649 | ifp->if_flags |= IFF_UP; |
---|
650 | |
---|
651 | switch (ifa->ifa_addr->sa_family) { |
---|
652 | #ifdef INET |
---|
653 | case AF_INET: |
---|
654 | ifp->if_init(ifp->if_softc); /* before arpwhohas */ |
---|
655 | arp_ifinit(ifp, ifa); |
---|
656 | break; |
---|
657 | #endif |
---|
658 | default: |
---|
659 | ifp->if_init(ifp->if_softc); |
---|
660 | break; |
---|
661 | } |
---|
662 | break; |
---|
663 | |
---|
664 | case SIOCGIFADDR: |
---|
665 | { |
---|
666 | struct sockaddr *sa; |
---|
667 | |
---|
668 | sa = (struct sockaddr *) & ifr->ifr_data; |
---|
669 | bcopy(&IFP2FWC(ifp)->fc_hwaddr, |
---|
670 | (caddr_t) sa->sa_data, sizeof(struct fw_hwaddr)); |
---|
671 | } |
---|
672 | break; |
---|
673 | |
---|
674 | case SIOCSIFMTU: |
---|
675 | /* |
---|
676 | * Set the interface MTU. |
---|
677 | */ |
---|
678 | if (ifr->ifr_mtu > 1500) { |
---|
679 | error = EINVAL; |
---|
680 | } else { |
---|
681 | ifp->if_mtu = ifr->ifr_mtu; |
---|
682 | } |
---|
683 | break; |
---|
684 | default: |
---|
685 | error = EINVAL; /* XXX netbsd has ENOTTY??? */ |
---|
686 | break; |
---|
687 | } |
---|
688 | return (error); |
---|
689 | } |
---|
690 | |
---|
691 | static int |
---|
692 | firewire_resolvemulti(struct ifnet *ifp, struct sockaddr **llsa, |
---|
693 | struct sockaddr *sa) |
---|
694 | { |
---|
695 | #ifdef INET |
---|
696 | struct sockaddr_in *sin; |
---|
697 | #endif |
---|
698 | #ifdef INET6 |
---|
699 | struct sockaddr_in6 *sin6; |
---|
700 | #endif |
---|
701 | |
---|
702 | switch(sa->sa_family) { |
---|
703 | case AF_LINK: |
---|
704 | /* |
---|
705 | * No mapping needed. |
---|
706 | */ |
---|
707 | *llsa = NULL; |
---|
708 | return 0; |
---|
709 | |
---|
710 | #ifdef INET |
---|
711 | case AF_INET: |
---|
712 | sin = (struct sockaddr_in *)sa; |
---|
713 | if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) |
---|
714 | return EADDRNOTAVAIL; |
---|
715 | *llsa = NULL; |
---|
716 | return 0; |
---|
717 | #endif |
---|
718 | #ifdef INET6 |
---|
719 | case AF_INET6: |
---|
720 | sin6 = (struct sockaddr_in6 *)sa; |
---|
721 | if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { |
---|
722 | /* |
---|
723 | * An IP6 address of 0 means listen to all |
---|
724 | * of the Ethernet multicast address used for IP6. |
---|
725 | * (This is used for multicast routers.) |
---|
726 | */ |
---|
727 | ifp->if_flags |= IFF_ALLMULTI; |
---|
728 | *llsa = NULL; |
---|
729 | return 0; |
---|
730 | } |
---|
731 | if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) |
---|
732 | return EADDRNOTAVAIL; |
---|
733 | *llsa = NULL; |
---|
734 | return 0; |
---|
735 | #endif |
---|
736 | |
---|
737 | default: |
---|
738 | /* |
---|
739 | * Well, the text isn't quite right, but it's the name |
---|
740 | * that counts... |
---|
741 | */ |
---|
742 | return EAFNOSUPPORT; |
---|
743 | } |
---|
744 | } |
---|
745 | |
---|
746 | void |
---|
747 | firewire_ifattach(struct ifnet *ifp, struct fw_hwaddr *llc) |
---|
748 | { |
---|
749 | struct fw_com *fc = IFP2FWC(ifp); |
---|
750 | struct ifaddr *ifa; |
---|
751 | struct sockaddr_dl *sdl; |
---|
752 | static const char* speeds[] = { |
---|
753 | "S100", "S200", "S400", "S800", |
---|
754 | "S1600", "S3200" |
---|
755 | }; |
---|
756 | |
---|
757 | fc->fc_speed = llc->sspd; |
---|
758 | STAILQ_INIT(&fc->fc_frags); |
---|
759 | |
---|
760 | ifp->if_addrlen = sizeof(struct fw_hwaddr); |
---|
761 | ifp->if_hdrlen = 0; |
---|
762 | if_attach(ifp); |
---|
763 | ifp->if_mtu = 1500; /* XXX */ |
---|
764 | ifp->if_output = firewire_output; |
---|
765 | ifp->if_resolvemulti = firewire_resolvemulti; |
---|
766 | ifp->if_broadcastaddr = (u_char *) &firewire_broadcastaddr; |
---|
767 | |
---|
768 | ifa = ifp->if_addr; |
---|
769 | KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__)); |
---|
770 | sdl = (struct sockaddr_dl *)ifa->ifa_addr; |
---|
771 | sdl->sdl_type = IFT_IEEE1394; |
---|
772 | sdl->sdl_alen = ifp->if_addrlen; |
---|
773 | bcopy(llc, LLADDR(sdl), ifp->if_addrlen); |
---|
774 | |
---|
775 | bpfattach(ifp, DLT_APPLE_IP_OVER_IEEE1394, |
---|
776 | sizeof(struct fw_hwaddr)); |
---|
777 | |
---|
778 | if_printf(ifp, "Firewire address: %8D @ 0x%04x%08x, %s, maxrec %d\n", |
---|
779 | (uint8_t *) &llc->sender_unique_ID_hi, ":", |
---|
780 | ntohs(llc->sender_unicast_FIFO_hi), |
---|
781 | ntohl(llc->sender_unicast_FIFO_lo), |
---|
782 | speeds[llc->sspd], |
---|
783 | (2 << llc->sender_max_rec)); |
---|
784 | } |
---|
785 | |
---|
786 | void |
---|
787 | firewire_ifdetach(struct ifnet *ifp) |
---|
788 | { |
---|
789 | bpfdetach(ifp); |
---|
790 | if_detach(ifp); |
---|
791 | } |
---|
792 | |
---|
793 | void |
---|
794 | firewire_busreset(struct ifnet *ifp) |
---|
795 | { |
---|
796 | struct fw_com *fc = IFP2FWC(ifp); |
---|
797 | struct fw_reass *r; |
---|
798 | struct mbuf *m; |
---|
799 | |
---|
800 | /* |
---|
801 | * Discard any partial datagrams since the host ids may have changed. |
---|
802 | */ |
---|
803 | while ((r = STAILQ_FIRST(&fc->fc_frags))) { |
---|
804 | STAILQ_REMOVE_HEAD(&fc->fc_frags, fr_link); |
---|
805 | while (r->fr_frags) { |
---|
806 | m = r->fr_frags; |
---|
807 | r->fr_frags = m->m_nextpkt; |
---|
808 | m_freem(m); |
---|
809 | } |
---|
810 | free(r, M_TEMP); |
---|
811 | } |
---|
812 | } |
---|
813 | |
---|
814 | static void * |
---|
815 | firewire_alloc(u_char type, struct ifnet *ifp) |
---|
816 | { |
---|
817 | struct fw_com *fc; |
---|
818 | |
---|
819 | fc = malloc(sizeof(struct fw_com), M_FWCOM, M_WAITOK | M_ZERO); |
---|
820 | fc->fc_ifp = ifp; |
---|
821 | |
---|
822 | return (fc); |
---|
823 | } |
---|
824 | |
---|
825 | static void |
---|
826 | firewire_free(void *com, u_char type) |
---|
827 | { |
---|
828 | |
---|
829 | free(com, M_FWCOM); |
---|
830 | } |
---|
831 | |
---|
832 | static int |
---|
833 | firewire_modevent(module_t mod, int type, void *data) |
---|
834 | { |
---|
835 | |
---|
836 | switch (type) { |
---|
837 | case MOD_LOAD: |
---|
838 | if_register_com_alloc(IFT_IEEE1394, |
---|
839 | firewire_alloc, firewire_free); |
---|
840 | break; |
---|
841 | case MOD_UNLOAD: |
---|
842 | if_deregister_com_alloc(IFT_IEEE1394); |
---|
843 | break; |
---|
844 | default: |
---|
845 | return (EOPNOTSUPP); |
---|
846 | } |
---|
847 | |
---|
848 | return (0); |
---|
849 | } |
---|
850 | |
---|
851 | static moduledata_t firewire_mod = { |
---|
852 | "if_firewire", |
---|
853 | firewire_modevent, |
---|
854 | 0 |
---|
855 | }; |
---|
856 | |
---|
857 | DECLARE_MODULE(if_firewire, firewire_mod, SI_SUB_INIT_IF, SI_ORDER_ANY); |
---|
858 | MODULE_VERSION(if_firewire, 1); |
---|