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) 2009 Robert N. M. Watson |
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5 | * All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions |
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9 | * are met: |
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10 | * 1. Redistributions of source code must retain the above copyright |
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11 | * notice, this list of conditions and the following disclaimer. |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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26 | * SUCH DAMAGE. |
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27 | */ |
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28 | |
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29 | /* |
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30 | * When an interface has been detached but not yet freed, we set the various |
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31 | * ifnet function pointers to "ifdead" versions. This prevents unexpected |
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32 | * calls from the network stack into the device driver after if_detach() has |
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33 | * returned. |
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34 | */ |
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35 | |
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36 | #include <sys/cdefs.h> |
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37 | __FBSDID("$FreeBSD$"); |
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38 | |
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39 | #include <sys/param.h> |
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40 | #include <sys/mbuf.h> |
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41 | #include <sys/socket.h> |
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42 | |
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43 | #include <net/if.h> |
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44 | #include <net/if_var.h> |
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45 | |
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46 | static int |
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47 | ifdead_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *sa, |
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48 | struct route *ro) |
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49 | { |
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50 | |
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51 | m_freem(m); |
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52 | return (ENXIO); |
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53 | } |
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54 | |
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55 | static void |
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56 | ifdead_input(struct ifnet *ifp, struct mbuf *m) |
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57 | { |
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58 | |
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59 | m_freem(m); |
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60 | } |
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61 | |
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62 | static void |
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63 | ifdead_start(struct ifnet *ifp) |
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64 | { |
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65 | |
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66 | } |
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67 | |
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68 | static int |
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69 | ifdead_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) |
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70 | { |
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71 | |
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72 | return (ENXIO); |
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73 | } |
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74 | |
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75 | static int |
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76 | ifdead_resolvemulti(struct ifnet *ifp, struct sockaddr **llsa, |
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77 | struct sockaddr *sa) |
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78 | { |
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79 | |
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80 | *llsa = NULL; |
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81 | return (ENXIO); |
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82 | } |
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83 | |
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84 | static void |
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85 | ifdead_qflush(struct ifnet *ifp) |
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86 | { |
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87 | |
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88 | } |
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89 | |
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90 | static int |
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91 | ifdead_transmit(struct ifnet *ifp, struct mbuf *m) |
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92 | { |
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93 | |
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94 | m_freem(m); |
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95 | return (ENXIO); |
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96 | } |
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97 | |
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98 | static uint64_t |
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99 | ifdead_get_counter(struct ifnet *ifp, ift_counter cnt) |
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100 | { |
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101 | |
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102 | return (0); |
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103 | } |
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104 | |
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105 | static int |
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106 | ifdead_snd_tag_alloc(struct ifnet *ifp, union if_snd_tag_alloc_params *params, |
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107 | struct m_snd_tag **ppmt) |
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108 | { |
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109 | return (EOPNOTSUPP); |
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110 | } |
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111 | |
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112 | static int |
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113 | ifdead_snd_tag_modify(struct m_snd_tag *pmt, union if_snd_tag_modify_params *params) |
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114 | { |
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115 | return (EOPNOTSUPP); |
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116 | } |
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117 | |
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118 | static int |
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119 | ifdead_snd_tag_query(struct m_snd_tag *pmt, union if_snd_tag_query_params *params) |
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120 | { |
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121 | return (EOPNOTSUPP); |
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122 | } |
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123 | |
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124 | static void |
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125 | ifdead_snd_tag_free(struct m_snd_tag *pmt) |
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126 | { |
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127 | } |
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128 | |
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129 | void |
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130 | if_dead(struct ifnet *ifp) |
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131 | { |
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132 | |
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133 | ifp->if_output = ifdead_output; |
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134 | ifp->if_input = ifdead_input; |
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135 | ifp->if_start = ifdead_start; |
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136 | ifp->if_ioctl = ifdead_ioctl; |
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137 | ifp->if_resolvemulti = ifdead_resolvemulti; |
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138 | ifp->if_qflush = ifdead_qflush; |
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139 | ifp->if_transmit = ifdead_transmit; |
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140 | ifp->if_get_counter = ifdead_get_counter; |
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141 | ifp->if_snd_tag_alloc = ifdead_snd_tag_alloc; |
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142 | ifp->if_snd_tag_modify = ifdead_snd_tag_modify; |
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143 | ifp->if_snd_tag_query = ifdead_snd_tag_query; |
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144 | ifp->if_snd_tag_free = ifdead_snd_tag_free; |
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145 | } |
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