| 1 |
/* |
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* ether_beos.cpp - SheepShaver Ethernet Device Driver (DLPI), BeOS specific stuff |
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* |
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* SheepShaver (C) 1997-2008 Marc Hellwig and Christian Bauer |
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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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|
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#include "sysdeps.h" |
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#include "ether.h" |
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#include "ether_defs.h" |
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#include "prefs.h" |
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#include "xlowmem.h" |
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#include "main.h" |
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#include "user_strings.h" |
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#include "sheep_net.h" |
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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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#define STATISTICS 0 |
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#define MONITOR 0 |
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|
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|
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// Global variables |
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static thread_id read_thread; // Packet receiver thread |
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static bool ether_thread_active = true; // Flag for quitting the receiver thread |
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|
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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 sem_id read_sem, write_sem; // Semaphores to trigger packet reading/writing |
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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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|
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static bool net_open = false; // Flag: initialization succeeded, network device open |
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|
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|
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// Prototypes |
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static status_t AO_receive_thread(void *data); |
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|
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|
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/* |
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* Initialize ethernet |
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*/ |
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|
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void EtherInit(void) |
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{ |
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// Do nothing if the user disabled the network |
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if (PrefsFindBool("nonet")) |
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return; |
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|
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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) { |
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found_add_on = true; |
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break; |
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} |
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} |
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} |
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if (found_add_on) break; |
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} |
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if (!found_add_on) { |
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|
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// Search for sheep_net in network config file |
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char str[1024]; |
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bool sheep_net_found = false; |
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FILE *fin = fopen("/boot/home/config/settings/network", "r"); |
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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")) |
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sheep_net_found = true; |
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} |
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fclose(fin); |
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|
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// It was found, so something else must be wrong |
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if (sheep_net_found) { |
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WarningAlert(GetString(STR_NO_NET_ADDON_WARN)); |
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return; |
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} |
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|
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// Not found, inform the user |
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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; |
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|
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// Change the network config file and restart the network |
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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"); |
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bool global_found = false; |
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bool modified = false; |
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while (!feof(fin)) { |
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str[0] = 0; |
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fgets(str, 1024, fin); |
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if (!global_found && strstr(str, "GLOBAL:")) { |
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global_found = true; |
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} else if (global_found && !modified && strstr(str, "PROTOCOLS")) { |
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str[strlen(str)-1] = 0; |
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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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} |
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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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|
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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); |
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if (msg.IsValid()) { |
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while (be_roster->IsRunning("application/x-vnd.Be-NETS")) { |
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msg.SendMessage(B_QUIT_REQUESTED); |
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snooze(500000); |
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} |
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} |
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} |
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BPath path; |
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find_directory(B_BEOS_BOOT_DIRECTORY, &path); |
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path.Append("Netscript"); |
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char *argv[3] = {"/bin/sh", (char *)path.Path(), NULL}; |
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thread_id net_server = load_image(2, argv, environ); |
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resume_thread(net_server); |
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status_t l; |
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wait_for_thread(net_server, &l); |
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goto i_wanna_try_that_again; |
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} |
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|
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// Set up communications with add-on |
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area_id handler_buffer; |
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if ((handler_buffer = find_area("packet buffer")) < B_NO_ERROR) { |
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WarningAlert(GetString(STR_NET_ADDON_INIT_FAILED)); |
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return; |
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} |
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if ((buffer_area = clone_area("local packet buffer", &net_buffer_ptr, B_ANY_ADDRESS, B_READ_AREA | B_WRITE_AREA, handler_buffer)) < B_NO_ERROR) { |
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D(bug("EtherInit: couldn't clone packet area\n")); |
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WarningAlert(GetString(STR_NET_ADDON_CLONE_FAILED)); |
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return; |
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} |
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if ((read_sem = create_sem(0, "ether read")) < B_NO_ERROR) { |
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printf("FATAL: can't create Ethernet semaphore\n"); |
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return; |
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} |
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net_buffer_ptr->read_sem = read_sem; |
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write_sem = net_buffer_ptr->write_sem; |
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read_thread = spawn_thread(AO_receive_thread, "ether read", B_URGENT_DISPLAY_PRIORITY, NULL); |
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resume_thread(read_thread); |
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for (int i=0; i<WRITE_PACKET_COUNT; i++) |
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net_buffer_ptr->write[i].cmd = IN_USE | (ACTIVATE_SHEEP_NET << 8); |
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rd_pos = wr_pos = 0; |
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release_sem(write_sem); |
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|
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// Everything OK |
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net_open = true; |
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} |
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|
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|
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/* |
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* Exit ethernet |
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*/ |
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|
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void EtherExit(void) |
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{ |
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if (net_open) { |
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|
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// Close communications with add-on |
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for (int i=0; i<WRITE_PACKET_COUNT; i++) |
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net_buffer_ptr->write[i].cmd = IN_USE | (DEACTIVATE_SHEEP_NET << 8); |
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release_sem(write_sem); |
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|
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// Quit receiver thread |
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ether_thread_active = false; |
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status_t result; |
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release_sem(read_sem); |
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while (wait_for_thread(read_thread, &result) == B_INTERRUPTED) ; |
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|
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delete_sem(read_sem); |
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delete_area(buffer_area); |
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} |
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|
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#if STATISTICS |
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// Show statistics |
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printf("%ld messages put on write queue\n", num_wput); |
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printf("%ld error acks\n", num_error_acks); |
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printf("%ld packets transmitted (%ld raw, %ld normal)\n", num_tx_packets, num_tx_raw_packets, num_tx_normal_packets); |
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printf("%ld tx packets dropped because buffer full\n", num_tx_buffer_full); |
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printf("%ld packets received\n", num_rx_packets); |
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printf("%ld packets passed upstream (%ld Fast Path, %ld normal)\n", num_rx_fastpath + num_unitdata_ind, num_rx_fastpath, num_unitdata_ind); |
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printf("EtherIRQ called %ld times\n", num_ether_irq); |
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printf("%ld rx packets dropped due to low memory\n", num_rx_no_mem); |
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printf("%ld rx packets dropped because no stream found\n", num_rx_dropped); |
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printf("%ld rx packets dropped because stream not ready\n", num_rx_stream_not_ready); |
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printf("%ld rx packets dropped because no memory for unitdata_ind\n", num_rx_no_unitdata_mem); |
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#endif |
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} |
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|
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|
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/* |
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* Ask add-on for ethernet hardware address |
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*/ |
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|
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void AO_get_ethernet_address(uint32 arg) |
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{ |
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uint8 *addr = Mac2HostAddr(arg); |
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if (net_open) { |
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OTCopy48BitAddress(net_buffer_ptr->ether_addr, addr); |
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} else { |
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addr[0] = 0x12; |
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addr[1] = 0x34; |
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addr[2] = 0x56; |
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addr[3] = 0x78; |
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addr[4] = 0x9a; |
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addr[5] = 0xbc; |
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} |
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D(bug("AO_get_ethernet_address: got address %02x%02x%02x%02x%02x%02x\n", addr[0], addr[1], addr[2], addr[3], addr[4], addr[5])); |
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} |
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|
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|
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/* |
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* Tell add-on to enable multicast address |
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*/ |
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|
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void AO_enable_multicast(uint32 addr) |
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{ |
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D(bug("AO_enable_multicast\n")); |
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if (net_open) { |
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net_packet *p = &net_buffer_ptr->write[wr_pos]; |
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if (p->cmd & IN_USE) { |
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D(bug("WARNING: couldn't enable multicast address\n")); |
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} else { |
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Mac2host_memcpy(p->data, addr, 6); |
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p->length = 6; |
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p->cmd = IN_USE | (ADD_MULTICAST << 8); |
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wr_pos = (wr_pos + 1) % WRITE_PACKET_COUNT; |
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release_sem(write_sem); |
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} |
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} |
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} |
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|
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|
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/* |
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* Tell add-on to disable multicast address |
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*/ |
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|
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void AO_disable_multicast(uint32 addr) |
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{ |
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D(bug("AO_disable_multicast\n")); |
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if (net_open) { |
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net_packet *p = &net_buffer_ptr->write[wr_pos]; |
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if (p->cmd & IN_USE) { |
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D(bug("WARNING: couldn't enable multicast address\n")); |
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} else { |
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Mac2host_memcpy(p->data, addr, 6); |
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p->length = 6; |
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p->cmd = IN_USE | (REMOVE_MULTICAST << 8); |
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wr_pos = (wr_pos + 1) % WRITE_PACKET_COUNT; |
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release_sem(write_sem); |
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} |
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D(bug("WARNING: couldn't disable multicast address\n")); |
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} |
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} |
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|
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|
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/* |
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* Tell add-on to transmit one packet |
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*/ |
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|
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void AO_transmit_packet(uint32 mp_arg) |
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{ |
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D(bug("AO_transmit_packet\n")); |
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if (net_open) { |
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net_packet *p = &net_buffer_ptr->write[wr_pos]; |
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if (p->cmd & IN_USE) { |
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D(bug("WARNING: couldn't transmit packet (buffer full)\n")); |
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num_tx_buffer_full++; |
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} else { |
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D(bug(" write packet pos %d\n", i)); |
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num_tx_packets++; |
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|
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// Copy packet to buffer |
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uint8 *start; |
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uint8 *bp = start = p->data; |
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mblk_t *mp = Mac2HostAddr(mp_arg); |
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while (mp) { |
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uint32 size = mp->b_wptr - mp->b_rptr; |
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memcpy(bp, mp->b_rptr, size); |
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bp += size; |
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mp = mp->b_cont; |
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} |
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|
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#if MONITOR |
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bug("Sending Ethernet packet:\n"); |
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for (int i=0; i<(uint32)(bp - start); i++) { |
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bug("%02lx ", start[i]); |
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} |
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bug("\n"); |
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#endif |
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|
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// Notify add-on |
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p->length = (uint32)(bp - start); |
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p->cmd = IN_USE | (SHEEP_PACKET << 8); |
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wr_pos = (wr_pos + 1) % WRITE_PACKET_COUNT; |
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release_sem(write_sem); |
| 331 |
} |
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} |
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} |
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|
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|
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/* |
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* Packet reception thread |
| 338 |
*/ |
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|
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static status_t AO_receive_thread(void *data) |
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{ |
| 342 |
while (ether_thread_active) { |
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if (net_buffer_ptr->read[rd_pos].cmd & IN_USE) { |
| 344 |
if (ether_driver_opened) { |
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D(bug(" packet received, triggering Ethernet interrupt\n")); |
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SetInterruptFlag(INTFLAG_ETHER); |
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TriggerInterrupt(); |
| 348 |
} |
| 349 |
} |
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acquire_sem_etc(read_sem, 1, B_TIMEOUT, 25000); |
| 351 |
} |
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return 0; |
| 353 |
} |
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|
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|
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/* |
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* Ethernet interrupt |
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*/ |
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|
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void EtherIRQ(void) |
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{ |
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D(bug("EtherIRQ\n")); |
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num_ether_irq++; |
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OTEnterInterrupt(); |
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|
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// Send received packets to OpenTransport |
| 367 |
net_packet *p = &net_buffer_ptr->read[rd_pos]; |
| 368 |
while (p->cmd & IN_USE) { |
| 369 |
if ((p->cmd >> 8) == SHEEP_PACKET) { |
| 370 |
num_rx_packets++; |
| 371 |
D(bug(" read packet pos %d\n", i)); |
| 372 |
uint32 size = p->length; |
| 373 |
|
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#if MONITOR |
| 375 |
bug("Receiving Ethernet packet:\n"); |
| 376 |
for (int i=0; i<size; i++) { |
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bug("%02lx ", p->data[i]); |
| 378 |
} |
| 379 |
bug("\n"); |
| 380 |
#endif |
| 381 |
|
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// Wrap packet in message block |
| 383 |
//!! maybe use esballoc() |
| 384 |
mblk_t *mp; |
| 385 |
if ((mp = allocb(size, 0)) != NULL) { |
| 386 |
D(bug(" packet data at %p\n", (void *)mp->b_rptr)); |
| 387 |
memcpy(mp->b_rptr, p->data, size); |
| 388 |
mp->b_wptr += size; |
| 389 |
ether_packet_received(mp); |
| 390 |
} else { |
| 391 |
D(bug("WARNING: Cannot allocate mblk for received packet\n")); |
| 392 |
num_rx_no_mem++; |
| 393 |
} |
| 394 |
} |
| 395 |
p->cmd = 0; // Free packet |
| 396 |
rd_pos = (rd_pos + 1) % READ_PACKET_COUNT; |
| 397 |
p = &net_buffer_ptr->read[rd_pos]; |
| 398 |
} |
| 399 |
OTLeaveInterrupt(); |
| 400 |
} |
