| 1 |
cebix |
1.1 |
/* |
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* ether_beos.cpp - Ethernet device driver, BeOS specific stuff |
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* |
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* Basilisk II (C) 1997-1999 Christian Bauer |
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* Portions (C) 1997-1999 Marc Hellwig |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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#include <KernelKit.h> |
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#include <AppKit.h> |
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#include <StorageKit.h> |
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#include <support/List.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include "sysdeps.h" |
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#include "cpu_emulation.h" |
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#include "main.h" |
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#include "prefs.h" |
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#include "user_strings.h" |
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#include "macos_util.h" |
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#include "ether.h" |
| 38 |
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#include "ether_defs.h" |
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#include "sheep_net.h" |
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#define DEBUG 0 |
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#include "debug.h" |
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#define MONITOR 0 |
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// List of attached protocols |
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struct NetProtocol { |
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uint16 type; |
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uint32 handler; |
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}; |
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static BList prot_list; |
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// Global variables |
| 58 |
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static thread_id read_thread; // Packet reception thread |
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static bool ether_thread_active = true; // Flag for quitting the reception thread |
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static area_id buffer_area; // Packet buffer area |
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static net_buffer *net_buffer_ptr; // Pointer to packet buffer |
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static uint32 rd_pos; // Current read position in packet buffer |
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static uint32 wr_pos; // Current write position in packet buffer |
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static sem_id read_sem, write_sem; // Semaphores to trigger packet reading/writing |
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// Prototypes |
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static status_t receive_proc(void *data); |
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/* |
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* Find protocol in list |
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*/ |
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static NetProtocol *find_protocol(uint16 type) |
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{ |
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// All 802.2 types are the same |
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if (type <= 1500) |
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type = 0; |
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// Search list (we could use hashing here but there are usually only three |
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// handlers installed: 0x0000 for AppleTalk and 0x0800/0x0806 for TCP/IP) |
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NetProtocol *p; |
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for (int i=0; (p = (NetProtocol *)prot_list.ItemAt(i)) != NULL; i++) |
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if (p->type == type) |
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return p; |
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return NULL; |
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} |
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/* |
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cebix |
1.2 |
* Remove all protocols |
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*/ |
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static void remove_all_protocols(void) |
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{ |
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NetProtocol *p; |
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while ((p = (NetProtocol *)prot_list.RemoveItem((long)0)) != NULL) |
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delete p; |
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} |
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/* |
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cebix |
1.1 |
* Initialization |
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*/ |
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void EtherInit(void) |
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{ |
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// Do nothing if no Ethernet device specified |
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if (PrefsFindString("ether") == NULL) |
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return; |
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// Find net_server team |
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i_wanna_try_that_again: |
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bool found_add_on = false; |
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team_info t_info; |
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int32 t_cookie = 0; |
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image_info i_info; |
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int32 i_cookie = 0; |
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while (get_next_team_info(&t_cookie, &t_info) == B_NO_ERROR) { |
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if (strstr(t_info.args,"net_server")!=NULL) { |
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// Check if sheep_net add-on is loaded |
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while (get_next_image_info(t_info.team, &i_cookie, &i_info) == B_NO_ERROR) { |
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if (strstr(i_info.name, "sheep_net") != NULL) { |
| 127 |
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found_add_on = true; |
| 128 |
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break; |
| 129 |
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} |
| 130 |
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} |
| 131 |
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} |
| 132 |
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if (found_add_on) break; |
| 133 |
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} |
| 134 |
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if (!found_add_on) { |
| 135 |
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| 136 |
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// Search for sheep_net in network config file |
| 137 |
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char str[1024]; |
| 138 |
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bool sheep_net_found = false; |
| 139 |
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FILE *fin = fopen("/boot/home/config/settings/network", "r"); |
| 140 |
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while (!feof(fin)) { |
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fgets(str, 1024, fin); |
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if (strstr(str, "PROTOCOLS")) |
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if (strstr(str, "sheep_net")) |
| 144 |
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sheep_net_found = true; |
| 145 |
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} |
| 146 |
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fclose(fin); |
| 147 |
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| 148 |
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// It was found, so something else must be wrong |
| 149 |
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if (sheep_net_found) { |
| 150 |
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WarningAlert(GetString(STR_NO_NET_ADDON_WARN)); |
| 151 |
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return; |
| 152 |
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} |
| 153 |
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| 154 |
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// Not found, inform the user |
| 155 |
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if (!ChoiceAlert(GetString(STR_NET_CONFIG_MODIFY_WARN), GetString(STR_OK_BUTTON), GetString(STR_CANCEL_BUTTON))) |
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return; |
| 157 |
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| 158 |
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// Change the network config file and restart the network |
| 159 |
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fin = fopen("/boot/home/config/settings/network", "r"); |
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FILE *fout = fopen("/boot/home/config/settings/network.2", "w"); |
| 161 |
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bool global_found = false; |
| 162 |
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bool modified = false; |
| 163 |
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while (!feof(fin)) { |
| 164 |
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str[0] = 0; |
| 165 |
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fgets(str, 1024, fin); |
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if (!global_found && strstr(str, "GLOBAL:")) { |
| 167 |
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global_found = true; |
| 168 |
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} else if (global_found && !modified && strstr(str, "PROTOCOLS")) { |
| 169 |
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str[strlen(str)-1] = 0; |
| 170 |
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strcat(str, " sheep_net\n"); |
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modified = true; |
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} else if (global_found && !modified && strlen(str) > 2 && str[strlen(str) - 2] == ':') { |
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fputs("\tPROTOCOLS = sheep_net\n", fout); |
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modified = true; |
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} |
| 176 |
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fputs(str, fout); |
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} |
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if (!modified) |
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fputs("\tPROTOCOLS = sheep_net\n", fout); |
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fclose(fout); |
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fclose(fin); |
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remove("/boot/home/config/settings/network.orig"); |
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rename("/boot/home/config/settings/network", "/boot/home/config/settings/network.orig"); |
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rename("/boot/home/config/settings/network.2", "/boot/home/config/settings/network"); |
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| 186 |
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app_info ai; |
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if (be_roster->GetAppInfo("application/x-vnd.Be-NETS", &ai) == B_OK) { |
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BMessenger msg(NULL, ai.team); |
| 189 |
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if (msg.IsValid()) { |
| 190 |
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while (be_roster->IsRunning("application/x-vnd.Be-NETS")) { |
| 191 |
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msg.SendMessage(B_QUIT_REQUESTED); |
| 192 |
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snooze(500000); |
| 193 |
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} |
| 194 |
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} |
| 195 |
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} |
| 196 |
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BPath path; |
| 197 |
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find_directory(B_BEOS_BOOT_DIRECTORY, &path); |
| 198 |
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path.Append("Netscript"); |
| 199 |
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const char *argv[3] = {"/bin/sh", path.Path(), NULL}; |
| 200 |
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thread_id net_server = load_image(2, argv, (const char **)environ); |
| 201 |
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resume_thread(net_server); |
| 202 |
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status_t l; |
| 203 |
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wait_for_thread(net_server, &l); |
| 204 |
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goto i_wanna_try_that_again; |
| 205 |
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} |
| 206 |
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| 207 |
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// Set up communications with add-on |
| 208 |
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area_id handler_buffer; |
| 209 |
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if ((handler_buffer = find_area("packet buffer")) < B_NO_ERROR) { |
| 210 |
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WarningAlert(GetString(STR_NET_ADDON_INIT_FAILED)); |
| 211 |
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return; |
| 212 |
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} |
| 213 |
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if ((buffer_area = clone_area("local packet buffer", (void **)&net_buffer_ptr, B_ANY_ADDRESS, B_READ_AREA | B_WRITE_AREA, handler_buffer)) < B_NO_ERROR) { |
| 214 |
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D(bug("EtherInit: couldn't clone packet area\n")); |
| 215 |
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WarningAlert(GetString(STR_NET_ADDON_CLONE_FAILED)); |
| 216 |
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return; |
| 217 |
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} |
| 218 |
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if ((read_sem = create_sem(0, "ether read")) < B_NO_ERROR) { |
| 219 |
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printf("FATAL: can't create Ethernet semaphore\n"); |
| 220 |
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return; |
| 221 |
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} |
| 222 |
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net_buffer_ptr->read_sem = read_sem; |
| 223 |
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write_sem = net_buffer_ptr->write_sem; |
| 224 |
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read_thread = spawn_thread(receive_proc, "Ethernet Receiver", B_URGENT_DISPLAY_PRIORITY, NULL); |
| 225 |
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resume_thread(read_thread); |
| 226 |
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for (int i=0; i<WRITE_PACKET_COUNT; i++) |
| 227 |
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net_buffer_ptr->write[i].cmd = IN_USE | (ACTIVATE_SHEEP_NET << 8); |
| 228 |
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rd_pos = wr_pos = 0; |
| 229 |
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release_sem(write_sem); |
| 230 |
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| 231 |
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// Get Ethernet address |
| 232 |
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memcpy(ether_addr, net_buffer_ptr->ether_addr, 6); |
| 233 |
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D(bug("Ethernet address %02x %02x %02x %02x %02x %02x\n", ether_addr[0], ether_addr[1], ether_addr[2], ether_addr[3], ether_addr[4], ether_addr[5])); |
| 234 |
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| 235 |
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// Everything OK |
| 236 |
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net_open = true; |
| 237 |
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} |
| 238 |
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| 239 |
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| 240 |
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/* |
| 241 |
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* Deinitialization |
| 242 |
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*/ |
| 243 |
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| 244 |
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void EtherExit(void) |
| 245 |
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{ |
| 246 |
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if (net_open) { |
| 247 |
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| 248 |
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// Close communications with add-on |
| 249 |
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for (int i=0; i<WRITE_PACKET_COUNT; i++) |
| 250 |
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net_buffer_ptr->write[i].cmd = IN_USE | (DEACTIVATE_SHEEP_NET << 8); |
| 251 |
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release_sem(write_sem); |
| 252 |
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| 253 |
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// Quit reception thread |
| 254 |
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ether_thread_active = false; |
| 255 |
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status_t result; |
| 256 |
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release_sem(read_sem); |
| 257 |
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wait_for_thread(read_thread, &result); |
| 258 |
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| 259 |
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delete_sem(read_sem); |
| 260 |
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delete_area(buffer_area); |
| 261 |
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| 262 |
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// Remove all protocols |
| 263 |
cebix |
1.2 |
remove_all_protocols(); |
| 264 |
cebix |
1.1 |
} |
| 265 |
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} |
| 266 |
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| 267 |
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| 268 |
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/* |
| 269 |
|
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* Reset |
| 270 |
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*/ |
| 271 |
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| 272 |
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void EtherReset(void) |
| 273 |
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{ |
| 274 |
cebix |
1.2 |
remove_all_protocols(); |
| 275 |
cebix |
1.1 |
} |
| 276 |
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| 277 |
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| 278 |
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/* |
| 279 |
|
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* Add multicast address |
| 280 |
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*/ |
| 281 |
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| 282 |
|
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int16 ether_add_multicast(uint32 pb) |
| 283 |
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{ |
| 284 |
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uint8 *addr = Mac2HostAddr(pb + eMultiAddr); |
| 285 |
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net_packet *p = &net_buffer_ptr->write[wr_pos]; |
| 286 |
|
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if (p->cmd & IN_USE) { |
| 287 |
|
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D(bug("WARNING: Couldn't enable multicast address\n")); |
| 288 |
|
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} else { |
| 289 |
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memcpy(p->data, addr, 6); |
| 290 |
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p->length = 6; |
| 291 |
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p->cmd = IN_USE | (ADD_MULTICAST << 8); |
| 292 |
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wr_pos = (wr_pos + 1) % WRITE_PACKET_COUNT; |
| 293 |
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release_sem(write_sem); |
| 294 |
|
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} |
| 295 |
|
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return noErr; |
| 296 |
|
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} |
| 297 |
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| 298 |
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| 299 |
|
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/* |
| 300 |
|
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* Delete multicast address |
| 301 |
|
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*/ |
| 302 |
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| 303 |
|
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int16 ether_del_multicast(uint32 pb) |
| 304 |
|
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{ |
| 305 |
|
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uint8 *addr = Mac2HostAddr(pb + eMultiAddr); |
| 306 |
|
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net_packet *p = &net_buffer_ptr->write[wr_pos]; |
| 307 |
|
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if (p->cmd & IN_USE) { |
| 308 |
|
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D(bug("WARNING: Couldn't enable multicast address\n")); |
| 309 |
|
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} else { |
| 310 |
|
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memcpy(p->data, addr, 6); |
| 311 |
|
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p->length = 6; |
| 312 |
|
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p->cmd = IN_USE | (REMOVE_MULTICAST << 8); |
| 313 |
|
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wr_pos = (wr_pos + 1) % WRITE_PACKET_COUNT; |
| 314 |
|
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release_sem(write_sem); |
| 315 |
|
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} |
| 316 |
|
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return noErr; |
| 317 |
|
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} |
| 318 |
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| 319 |
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| 320 |
|
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/* |
| 321 |
|
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* Attach protocol handler |
| 322 |
|
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*/ |
| 323 |
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| 324 |
|
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int16 ether_attach_ph(uint16 type, uint32 handler) |
| 325 |
|
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{ |
| 326 |
|
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// Already attached? |
| 327 |
|
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NetProtocol *p = find_protocol(type); |
| 328 |
|
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if (p != NULL) |
| 329 |
|
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return lapProtErr; |
| 330 |
|
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else { |
| 331 |
|
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// No, create and attach |
| 332 |
|
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p = new NetProtocol; |
| 333 |
|
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p->type = type; |
| 334 |
|
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p->handler = handler; |
| 335 |
|
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prot_list.AddItem(p); |
| 336 |
|
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return noErr; |
| 337 |
|
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} |
| 338 |
|
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} |
| 339 |
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| 340 |
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| 341 |
|
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/* |
| 342 |
|
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* Detach protocol handler |
| 343 |
|
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*/ |
| 344 |
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| 345 |
|
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int16 ether_detach_ph(uint16 type) |
| 346 |
|
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{ |
| 347 |
|
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NetProtocol *p = find_protocol(type); |
| 348 |
|
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if (p != NULL) { |
| 349 |
|
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prot_list.RemoveItem(p); |
| 350 |
|
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delete p; |
| 351 |
|
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return noErr; |
| 352 |
|
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} else |
| 353 |
|
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return lapProtErr; |
| 354 |
|
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} |
| 355 |
|
|
|
| 356 |
|
|
|
| 357 |
|
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/* |
| 358 |
|
|
* Transmit raw ethernet packet |
| 359 |
|
|
*/ |
| 360 |
|
|
|
| 361 |
|
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int16 ether_write(uint32 wds) |
| 362 |
|
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{ |
| 363 |
|
|
net_packet *p = &net_buffer_ptr->write[wr_pos]; |
| 364 |
|
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if (p->cmd & IN_USE) { |
| 365 |
|
|
D(bug("WARNING: Couldn't transmit packet (buffer full)\n")); |
| 366 |
|
|
} else { |
| 367 |
|
|
|
| 368 |
|
|
// Copy packet to buffer |
| 369 |
|
|
uint8 *start; |
| 370 |
|
|
uint8 *bp = start = p->data; |
| 371 |
|
|
for (;;) { |
| 372 |
|
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int len = ReadMacInt16(wds); |
| 373 |
|
|
if (len == 0) |
| 374 |
|
|
break; |
| 375 |
|
|
memcpy(bp, Mac2HostAddr(ReadMacInt32(wds + 2)), len); |
| 376 |
|
|
bp += len; |
| 377 |
|
|
wds += 6; |
| 378 |
|
|
} |
| 379 |
|
|
|
| 380 |
|
|
// Set source address |
| 381 |
|
|
memcpy(start + 6, ether_addr, 6); |
| 382 |
|
|
|
| 383 |
|
|
#if MONITOR |
| 384 |
|
|
bug("Sending Ethernet packet:\n"); |
| 385 |
|
|
for (int i=0; i<(uint32)(bp-start); i++) { |
| 386 |
|
|
bug("%02x ", start[i]); |
| 387 |
|
|
} |
| 388 |
|
|
bug("\n"); |
| 389 |
|
|
#endif |
| 390 |
|
|
|
| 391 |
|
|
// Notify add-on |
| 392 |
|
|
p->length = (uint32)(bp - start); |
| 393 |
|
|
p->cmd = IN_USE | (SHEEP_PACKET << 8); |
| 394 |
|
|
wr_pos = (wr_pos + 1) % WRITE_PACKET_COUNT; |
| 395 |
|
|
release_sem(write_sem); |
| 396 |
|
|
} |
| 397 |
|
|
return noErr; |
| 398 |
|
|
} |
| 399 |
|
|
|
| 400 |
|
|
|
| 401 |
|
|
/* |
| 402 |
|
|
* Packet reception thread |
| 403 |
|
|
*/ |
| 404 |
|
|
|
| 405 |
|
|
static status_t receive_proc(void *data) |
| 406 |
|
|
{ |
| 407 |
|
|
while (ether_thread_active) { |
| 408 |
|
|
if (net_buffer_ptr->read[rd_pos].cmd & IN_USE) { |
| 409 |
|
|
D(bug(" packet received, triggering Ethernet interrupt\n")); |
| 410 |
|
|
SetInterruptFlag(INTFLAG_ETHER); |
| 411 |
|
|
TriggerInterrupt(); |
| 412 |
|
|
} |
| 413 |
|
|
acquire_sem_etc(read_sem, 1, B_TIMEOUT, 25000); |
| 414 |
|
|
} |
| 415 |
|
|
return 0; |
| 416 |
|
|
} |
| 417 |
|
|
|
| 418 |
|
|
|
| 419 |
|
|
/* |
| 420 |
|
|
* Ethernet interrupt - activate deferred tasks to call IODone or protocol handlers |
| 421 |
|
|
*/ |
| 422 |
|
|
|
| 423 |
|
|
void EtherInterrupt(void) |
| 424 |
|
|
{ |
| 425 |
|
|
D(bug("EtherIRQ\n")); |
| 426 |
|
|
|
| 427 |
|
|
// Call protocol handler for received packets |
| 428 |
|
|
net_packet *p = &net_buffer_ptr->read[rd_pos]; |
| 429 |
|
|
while (p->cmd & IN_USE) { |
| 430 |
|
|
if ((p->cmd >> 8) == SHEEP_PACKET) { |
| 431 |
|
|
#if MONITOR |
| 432 |
|
|
bug("Receiving Ethernet packet:\n"); |
| 433 |
|
|
for (int i=0; i<p->length; i++) { |
| 434 |
|
|
bug("%02x ", p->data[i]); |
| 435 |
|
|
} |
| 436 |
|
|
bug("\n"); |
| 437 |
|
|
#endif |
| 438 |
|
|
// Get packet type |
| 439 |
|
|
uint16 type = ntohs(*(uint16 *)(p->data + 12)); |
| 440 |
|
|
|
| 441 |
|
|
// Look for protocol |
| 442 |
|
|
NetProtocol *prot = find_protocol(type); |
| 443 |
|
|
if (prot == NULL) |
| 444 |
|
|
goto next; |
| 445 |
|
|
|
| 446 |
|
|
// No default handler |
| 447 |
|
|
if (prot->handler == 0) |
| 448 |
|
|
goto next; |
| 449 |
|
|
|
| 450 |
|
|
// Copy header to RHA |
| 451 |
|
|
memcpy(Mac2HostAddr(ether_data + ed_RHA), p->data, 14); |
| 452 |
|
|
D(bug(" header %08lx%04lx %08lx%04lx %04lx\n", ReadMacInt32(ether_data + ed_RHA), ReadMacInt16(ether_data + ed_RHA + 4), ReadMacInt32(ether_data + ed_RHA + 6), ReadMacInt16(ether_data + ed_RHA + 10), ReadMacInt16(ether_data + ed_RHA + 12))); |
| 453 |
|
|
|
| 454 |
|
|
// Call protocol handler |
| 455 |
|
|
M68kRegisters r; |
| 456 |
|
|
r.d[0] = type; // Packet type |
| 457 |
|
|
r.d[1] = p->length - 14; // Remaining packet length (without header, for ReadPacket) |
| 458 |
|
|
r.a[0] = (uint32)p->data + 14; // Pointer to packet (host address, for ReadPacket) |
| 459 |
|
|
r.a[3] = ether_data + ed_RHA + 14; // Pointer behind header in RHA |
| 460 |
|
|
r.a[4] = ether_data + ed_ReadPacket; // Pointer to ReadPacket/ReadRest routines |
| 461 |
|
|
D(bug(" calling protocol handler %08lx, type %08lx, length %08lx, data %08lx, rha %08lx, read_packet %08lx\n", prot->handler, r.d[0], r.d[1], r.a[0], r.a[3], r.a[4])); |
| 462 |
|
|
Execute68k(prot->handler, &r); |
| 463 |
|
|
} |
| 464 |
|
|
next: p->cmd = 0; // Free packet |
| 465 |
|
|
rd_pos = (rd_pos + 1) % READ_PACKET_COUNT; |
| 466 |
|
|
p = &net_buffer_ptr->read[rd_pos]; |
| 467 |
|
|
} |
| 468 |
|
|
D(bug(" EtherIRQ done\n")); |
| 469 |
|
|
} |
