annotate src/fatudp.c @ 4:aa38447a4b21

First entry of Paradise Server 2.9 patch 10 Beta
author darius
date Sat, 06 Dec 1997 04:37:03 +0000
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1 /*--------------------------------------------------------------------------
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2 NETREK II -- Paradise
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3
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4 Permission to use, copy, modify, and distribute this software and its
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5 documentation, or any derivative works thereof, for any NON-COMMERCIAL
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6 purpose and without fee is hereby granted, provided that this copyright
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7 notice appear in all copies. No representations are made about the
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8 suitability of this software for any purpose. This software is provided
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9 "as is" without express or implied warranty.
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10
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11 Xtrek Copyright 1986 Chris Guthrie
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12 Netrek (Xtrek II) Copyright 1989 Kevin P. Smith
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13 Scott Silvey
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14 Paradise II (Netrek II) Copyright 1993 Larry Denys
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15 Kurt Olsen
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16 Brandon Gillespie
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17 --------------------------------------------------------------------------*/
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18
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19 #include "config.h"
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20 #include <stdio.h>
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21 #include <sys/types.h>
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22 #include <netinet/in.h>
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23
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24 #include "defs.h"
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25 #include "data.h"
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26 #include "packets.h"
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27 #include "shmem.h"
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28
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29 /* #define FATDIAG /* define to get LOTS of fat UDP debugging messages */
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30
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31
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32 /* this stuff is used for Fat UDP */
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33 typedef void *PTR; /* adjust this if you lack (void *) */
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34 typedef struct fat_node_t
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35 {
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36 PTR packet;
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37 int pkt_size;
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38 struct fat_node_t *prev;
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39 struct fat_node_t *next;
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40 } FAT_NODE;
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41
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42 FAT_NODE fat_kills[MAXPLAYER];
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43 FAT_NODE fat_torp_info[MAXPLAYER * MAXTORP];
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44 FAT_NODE fat_thingy_info[TOTALTHINGIES];
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45 FAT_NODE fat_phaser[MAXPLAYER];
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46 FAT_NODE fat_plasma_info[MAXPLAYER * MAXPLASMA];
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47 FAT_NODE fat_you;
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48 #if 0
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49 FAT_NODE fat_status;
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50 FAT_NODE fat_planet[MAXPLANETS];
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51 #else
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52 FAT_NODE fat_status2;
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53 FAT_NODE fat_planet2[MAXPLANETS];
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54 #endif
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55 FAT_NODE fat_flags[MAXPLAYER];
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56 FAT_NODE fat_hostile[MAXPLAYER];
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57
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58 /* define the lists */
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59 #define MAX_FAT_LIST 5 /* tweakable; should be > 1 */
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60 typedef struct
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61 {
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62 FAT_NODE *head;
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63 FAT_NODE *tail;
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64 } FAT_LIST;
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65 FAT_LIST fatlist[MAX_FAT_LIST], tmplist[MAX_FAT_LIST];
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66 /* tweakable parameters; compare with UDPBUFSIZE */
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67 /* NOTE: FAT_THRESH + MAX_FAT_DATA must be < UDPBUFSIZE */
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68 /* MAX_FAT_DATA must be larger than biggest semi-critical packet */
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69 #define MAX_FAT_DATA 100 /* add at most this many bytes */
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70 #define MAX_NONFAT 10 /* if we have this much left, stop */
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71
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72
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73 void
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74 reset_fat_list()
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75 {
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76 int i;
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77 for (i = 0; i < MAX_FAT_LIST; i++)
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78 fatlist[i].head = fatlist[i].tail = (FAT_NODE *) NULL;
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79 }
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80 /*
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81 *
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82 * ---------------------------------------------------------------------------
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83 * Fat City
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84 * ---------------------------------------------------------------------------
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85 * */
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86
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87 /*
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88 * Remove a FAT_NODE from a queue. If it's at the head or the tail of a
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89 * list, then we need to figure out which list it's in and update the head or
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90 * tail pointer. It's easier to go searching than to maintain a queue number
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91 * in every FAT_NODE.
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92 *
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93 * This routine looks too complex... there must be a simpler way to do this.
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94 */
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95 void
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96 dequeue(fatp)
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97 FAT_NODE *fatp;
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98 {
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99 int i;
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100
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101 #ifdef V_FATDIAG
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102 for (i = 0; i < MAX_FAT_LIST; i++)
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103 {
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104 printf("fatlist[i].head = 0x%.8lx tail = 0x%.8lx\n",
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105 fatlist[i].head, fatlist[i].tail);
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106 if ((fatlist[i].head == NULL && fatlist[i].tail != NULL) ||
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107 (fatlist[i].head != NULL && fatlist[i].tail == NULL))
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108 {
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109 printf("before!\n");
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110 kill(getpid(), 15);
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111 }
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112 }
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113 #endif
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114
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115
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116 if (fatp->next == NULL)
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117 {
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118 /* it's at the head or not in a queue */
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119 for (i = 0; i < MAX_FAT_LIST; i++)
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120 {
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121 if (fatlist[i].head == fatp)
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122 {
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123 fatlist[i].head = fatp->prev; /* move head back */
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124 if (fatlist[i].head != NULL)
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125 (fatlist[i].head)->next = NULL; /* amputate */
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126 break;
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127 }
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128 }
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129 }
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130 else
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131 {
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132 /* it's not at the head */
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133 if (fatp->prev != NULL)
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134 fatp->prev->next = fatp->next;
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135 }
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136
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137 if (fatp->prev == NULL)
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138 {
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139 /* it's at the tail or not in a queue */
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140 for (i = 0; i < MAX_FAT_LIST; i++)
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141 {
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142 if (fatlist[i].tail == fatp)
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143 {
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144 fatlist[i].tail = fatp->next; /* move head fwd */
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145 if (fatlist[i].tail != NULL)
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146 (fatlist[i].tail)->prev = NULL; /* amputate */
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147 break;
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148 }
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149 }
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150 }
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151 else
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152 {
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153 /* it's not at the tail */
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154 if (fatp->next != NULL)
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155 fatp->next->prev = fatp->prev;
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156 }
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157
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158 #ifdef FATDIAG
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159 printf("Removed 0x%.8lx...", fatp); /* FATDIAG */
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160 for (i = 0; i < MAX_FAT_LIST; i++)
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161 {
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162 if ((fatlist[i].head == NULL && fatlist[i].tail != NULL) ||
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163 (fatlist[i].head != NULL && fatlist[i].tail == NULL))
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164 {
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165 printf("after: %d %.8lx %.8lx\n", i, fatlist[i].head, fatlist[i].tail);
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166 kill(getpid(), 15);
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167 }
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168 }
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169 #endif
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170 fatp->prev = NULL;
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171 fatp->next = NULL;
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172 }
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173
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174 /*
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175 * Add a FAT_NODE to the tail of a temporary queue. The merge() routine
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176 * merges the temporary queues with the fatlists once the transmission is
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177 * sent.
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178 */
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179 void
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180 enqueue(fatp, list)
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181 FAT_NODE *fatp;
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182 int list;
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183 {
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184 #ifdef FATDIAG
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185 printf("added to tmplist %d\n", list); /* FATDIAG */
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186 #endif
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187
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
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parents:
diff changeset
188 if (tmplist[list].tail == NULL)
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
189 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
190 /* list was empty */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
191 tmplist[list].tail = tmplist[list].head = fatp;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
192 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
193 else
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
194 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
195 /* list wasn't empty */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
196 fatp->next = tmplist[list].tail;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
197 fatp->next->prev = fatp;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
198 tmplist[list].tail = fatp;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
199 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
200 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
201
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
202 /*
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
203 * This updates the "fat" tables; it's called from sendClientData().
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
204 */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
205 void
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
206 updateFat(packet)
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
207 /* Pick a random type for the packet */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
208 struct player_spacket *packet;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
209 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
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parents:
diff changeset
210 FAT_NODE *fatp;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
211 struct kills_spacket *kp;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
212 struct torp_info_spacket *tip;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
213 struct thingy_info_spacket *thip;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
214 struct phaser_spacket *php;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
215 struct plasma_info_spacket *pip;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
216 /* struct you_spacket *yp; */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
217 /* struct status_spacket2 *sp2; */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
218 /* struct planet_spacket *plp; */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
219 struct planet_spacket2 *plp2;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
220 struct flags_spacket *fp;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
221 struct hostile_spacket *hp;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
222 int idx;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
223
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
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224 /* step 1 : find the FAT_NODE for this packet */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
225 switch (packet->type)
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
226 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
227 case SP_KILLS:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
228 kp = (struct kills_spacket *) packet;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
229 idx = (int) kp->pnum;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
230 fatp = &fat_kills[idx];
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
231 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
232 case SP_TORP_INFO:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
233 tip = (struct torp_info_spacket *) packet;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
234 idx = (int) ntohs(tip->tnum);
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
235 fatp = &fat_torp_info[idx];
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
236 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
237 case SP_THINGY_INFO:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
238 thip = (struct thingy_info_spacket *) packet;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
239 idx = (int) ntohs(thip->tnum);
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
240 fatp = &fat_thingy_info[idx];
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
241 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
242 case SP_PHASER:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
243 php = (struct phaser_spacket *) packet;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
244 idx = (int) php->pnum;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
245 fatp = &fat_phaser[idx];
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
246 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
247 case SP_PLASMA_INFO:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
248 pip = (struct plasma_info_spacket *) packet;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
249 idx = (int) ntohs(pip->pnum);
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
250 fatp = &fat_plasma_info[idx];
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
251 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
252 case SP_YOU:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
253 /* yp = (struct you_spacket *) packet; */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
254 fatp = &fat_you;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
255 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
256 #if 0
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
257 case SP_STATUS:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
258 /* sp = (struct status_spacket *) packet; */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
259 fatp = &fat_status;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
260 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
261 case SP_PLANET:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
262 plp = (struct planet_spacket *) packet;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
263 idx = plp->pnum;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
264 fatp = &fat_planet[idx];
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
265 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
266 #else
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
267 case SP_STATUS2:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
268 /* sp = (struct status_spacket *) packet; */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
269 fatp = &fat_status2;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
270 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
271 case SP_PLANET2:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
272 plp2 = (struct planet_spacket2 *) packet;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
273 idx = plp2->pnum;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
274 fatp = &fat_planet2[idx];
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
275 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
276 #endif
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
277 case SP_FLAGS:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
278 fp = (struct flags_spacket *) packet;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
279 idx = (int) fp->pnum;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
280 fatp = &fat_flags[idx];
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
281 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
282 case SP_HOSTILE:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
283 hp = (struct hostile_spacket *) packet;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
284 idx = (int) hp->pnum;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
285 fatp = &fat_hostile[idx];
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
286 break;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
287 default:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
288 fprintf(stderr, "Fat error: bad semi-critical type (%d) in updateFat\n", (CARD8) packet->type);
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
289 return;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
290 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
291
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
292 if (fatp->packet != (PTR) packet)
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
293 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
294 fprintf(stderr, "Fat error: fatp->packet=0x%.8lx, packet=0x%.8lx\n",
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
295 (unsigned long) fatp->packet, (unsigned long) packet);
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
296 return;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
297 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
298 /* step 2 : move this dude to temporary list 0 */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
299 dequeue(fatp);
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
300 enqueue(fatp, 0);
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
301 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
302
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
303 /*
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
304 * This fattens up the transmission, adding up to MAX_FAT_DATA bytes. The
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
305 * packets which get added will be moved to a higher queue, giving them less
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
306 * priority for next time. Note that they are added to a parallel temporary
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
307 * list (otherwise they'd could be sent several times in the same
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
308 * transmission as the algorithm steps through the queues), and merged later
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
309 * on.
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
310 *
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
311 * Packets are assigned from head to tail, on a first-fit basis. If a
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
312 * semi-critical packet is larger than MAX_FAT_DATA, this routine will never
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
313 * send it, but it will skip around it.
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
314 *
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
315 * This routine is called from flushSockBuf, before the transmission is sent.
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
316 *
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
317 * A possible improvement is to have certain packets "expire", never to be seen
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
318 * again. This way we don't keep resending torp packets for players who are
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
319 * long dead. This raises the possibility that the dead player's torps will
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
320 * never go away though.
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
321 */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
322 int
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
323 fatten()
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
324 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
325 int bytesleft;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
326 FAT_NODE *fatp, *nextfatp;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
327 int list;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
328
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
329 #ifdef FATDIAG
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
330 printf("--- fattening\n");
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
331 #endif
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
332 bytesleft = MAX_FAT_DATA;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
333 for (list = 0; list < MAX_FAT_LIST; list++)
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
334 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
335 fatp = fatlist[list].head;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
336 while (fatp != NULL)
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
337 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
338 nextfatp = fatp->prev; /* move toward tail */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
339 #ifdef FATDIAG
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
340 if (nextfatp == fatp)
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
341 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
342 printf("Hey! nextfatp == fatp!\n");
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
343 kill(getpid(), 15);
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
344 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
345 #endif
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
346 if (fatp->pkt_size < bytesleft)
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
347 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
348 /* got one! */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
349 sendUDPbuffered(0, fatp->packet, fatp->pkt_size);
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
350 bytesleft -= fatp->pkt_size;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
351
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
352 packets_sent++; /* counts as a udp packet sent */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
353
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
354 /* move the packet to a higher queue (if there is one) */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
355 dequeue(fatp);
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
356 if (list + 1 == MAX_FAT_LIST)
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
357 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
358 /* enqueue(fatp, list); *//* keep packets on high queue? */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
359 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
360 else
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
361 {
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
362 enqueue(fatp, list + 1);
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
363 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
364
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
365 /* done yet? */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
366 if (bytesleft < MAX_NONFAT)
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
367 goto done; /* don't waste time searching anymore */
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
368 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
369 fatp = nextfatp;
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
370 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
371 }
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
372
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
373 done:
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
darius
parents:
diff changeset
374 /* at this point, we either filled with fat or ran out of queued packets */
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375 #ifdef FATDIAG
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376 printf("--- done\n");
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
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377 #endif
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378 V_UDPDIAG(("- Added %d grams of fat\n", MAX_FAT_DATA - bytesleft));
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379 return (0); /* some compilers need something after a goto */
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380 }
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381
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382
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383 /*
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384 * This gets called from flushSockBuf after the transmission is sent. It
aa38447a4b21 First entry of Paradise Server 2.9 patch 10 Beta
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385 * appends all the packets sitting in temporary queues to the corresponding
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386 * fat queues, where they will be eligible for fattening next transmission.
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387 */
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388 void
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389 fatMerge()
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390 {
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391 int i;
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392
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393 for (i = 0; i < MAX_FAT_LIST; i++)
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394 {
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395 if (tmplist[i].head == NULL)
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396 continue; /* temp list is empty, nothing to do */
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397
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398 if (fatlist[i].head == NULL)
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399 {
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400 /* fatlist is empty; just copy pointers */
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401 fatlist[i].head = tmplist[i].head;
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402 fatlist[i].tail = tmplist[i].tail;
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403
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404 }
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405 else
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406 {
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407 /* stuff in both */
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408 (tmplist[i].head)->next = fatlist[i].tail; /* fwd pointer */
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409 (fatlist[i].tail)->prev = tmplist[i].head; /* back pointer */
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410 fatlist[i].tail = tmplist[i].tail; /* move tail back */
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411 tmplist[i].head = tmplist[i].tail = NULL; /* clear the tmp list */
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412 }
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413 tmplist[i].head = tmplist[i].tail = NULL;
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414 #ifdef FATDIAG
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415 printf("merged list %d: %.8lx %.8lx\n", i, fatlist[i].head,
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416 fatlist[i].tail);
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417 #endif
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418 }
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419 }