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2ad0536d13
* Haiku is mostly compatible with BeOS, but there are a few minor changes.
533 lines
13 KiB
C++
533 lines
13 KiB
C++
/*
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* ether_beos.cpp - Ethernet device driver, BeOS specific stuff
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*
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* Basilisk II (C) 1997-2008 Christian Bauer
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* Portions written by 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 "sysdeps.h"
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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 <sys/socket.h>
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#ifdef __HAIKU__
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#include <sys/select.h>
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#include <netinet/in.h>
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#endif
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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"
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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
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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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static int fd = -1; // UDP socket fd
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static bool udp_tunnel = false;
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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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* 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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* Initialization
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*/
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bool ether_init(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 false;
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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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// 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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// 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 false;
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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 false;
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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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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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const char *argv[3] = {"/bin/sh", path.Path(), NULL};
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thread_id net_server = load_image(2, argv, (const char **)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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// 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 false;
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}
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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) {
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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 false;
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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 false;
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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(receive_proc, "Ethernet Receiver", 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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// Get Ethernet address
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memcpy(ether_addr, net_buffer_ptr->ether_addr, 6);
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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]));
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// Everything OK
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return true;
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}
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/*
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* Deinitialization
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*/
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void ether_exit(void)
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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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// Quit reception 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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wait_for_thread(read_thread, &result);
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delete_sem(read_sem);
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delete_area(buffer_area);
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// Remove all protocols
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remove_all_protocols();
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}
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/*
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* Reset
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*/
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void ether_reset(void)
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{
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remove_all_protocols();
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}
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/*
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* Add multicast address
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*/
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int16 ether_add_multicast(uint32 pb)
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{
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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, pb + eMultiAddr, 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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return noErr;
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}
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/*
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* Delete multicast address
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*/
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int16 ether_del_multicast(uint32 pb)
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{
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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, pb + eMultiAddr, 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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return noErr;
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}
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/*
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* Attach protocol handler
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*/
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int16 ether_attach_ph(uint16 type, uint32 handler)
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{
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// Already attached?
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NetProtocol *p = find_protocol(type);
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if (p != NULL)
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return lapProtErr;
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else {
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// No, create and attach
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p = new NetProtocol;
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p->type = type;
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p->handler = handler;
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prot_list.AddItem(p);
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return noErr;
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}
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}
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/*
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* Detach protocol handler
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*/
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int16 ether_detach_ph(uint16 type)
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{
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NetProtocol *p = find_protocol(type);
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if (p != NULL) {
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prot_list.RemoveItem(p);
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delete p;
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return noErr;
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} else
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return lapProtErr;
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}
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/*
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* Transmit raw ethernet packet
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*/
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int16 ether_write(uint32 wds)
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{
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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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} else {
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// Copy packet to buffer
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int len = ether_wds_to_buffer(wds, p->data);
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#if MONITOR
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bug("Sending Ethernet packet:\n");
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for (int i=0; i<len; i++) {
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bug("%02x ", p->data[i]);
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}
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bug("\n");
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#endif
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// Notify add-on
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p->length = len;
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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);
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}
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return noErr;
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}
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/*
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* Packet reception thread (non-UDP)
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*/
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static status_t receive_proc(void *data)
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{
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while (ether_thread_active) {
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if (net_buffer_ptr->read[rd_pos].cmd & IN_USE) {
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D(bug(" packet received, triggering Ethernet interrupt\n"));
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SetInterruptFlag(INTFLAG_ETHER);
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TriggerInterrupt();
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}
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acquire_sem_etc(read_sem, 1, B_TIMEOUT, 25000);
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}
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return 0;
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}
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/*
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* Packet reception thread (UDP)
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*/
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static status_t receive_proc_udp(void *data)
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{
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while (ether_thread_active) {
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fd_set readfds;
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FD_ZERO(&readfds);
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FD_SET(fd, &readfds);
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struct timeval timeout;
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timeout.tv_sec = 1;
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timeout.tv_usec = 0;
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if (select(fd+1, &readfds, NULL, NULL, &timeout) > 0) {
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D(bug(" packet received, triggering Ethernet interrupt\n"));
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SetInterruptFlag(INTFLAG_ETHER);
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TriggerInterrupt();
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}
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}
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return 0;
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}
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/*
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* Start UDP packet reception thread
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*/
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bool ether_start_udp_thread(int socket_fd)
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{
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fd = socket_fd;
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udp_tunnel = true;
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ether_thread_active = true;
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read_thread = spawn_thread(receive_proc_udp, "UDP Receiver", B_URGENT_DISPLAY_PRIORITY, NULL);
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resume_thread(read_thread);
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return true;
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}
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/*
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* Stop UDP packet reception thread
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*/
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void ether_stop_udp_thread(void)
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{
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ether_thread_active = false;
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status_t result;
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wait_for_thread(read_thread, &result);
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}
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/*
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* Ethernet interrupt - activate deferred tasks to call IODone or protocol handlers
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*/
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void EtherInterrupt(void)
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{
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D(bug("EtherIRQ\n"));
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EthernetPacket ether_packet;
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uint32 packet = ether_packet.addr();
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if (udp_tunnel) {
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ssize_t length;
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// Read packets from socket and hand to ether_udp_read() for processing
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while (true) {
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struct sockaddr_in from;
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socklen_t from_len = sizeof(from);
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length = recvfrom(fd, Mac2HostAddr(packet), 1514, 0, (struct sockaddr *)&from, &from_len);
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if (length < 14)
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break;
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ether_udp_read(packet, length, &from);
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}
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} else {
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// Call protocol handler for received packets
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net_packet *p = &net_buffer_ptr->read[rd_pos];
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while (p->cmd & IN_USE) {
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if ((p->cmd >> 8) == SHEEP_PACKET) {
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Host2Mac_memcpy(packet, p->data, p->length);
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#if MONITOR
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bug("Receiving Ethernet packet:\n");
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for (int i=0; i<p->length; i++) {
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bug("%02x ", ReadMacInt8(packet + i));
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}
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bug("\n");
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#endif
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// Get packet type
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uint16 type = ReadMacInt16(packet + 12);
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// Look for protocol
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NetProtocol *prot = find_protocol(type);
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if (prot == NULL)
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goto next;
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// No default handler
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if (prot->handler == 0)
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goto next;
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// Copy header to RHA
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Mac2Mac_memcpy(ether_data + ed_RHA, packet, 14);
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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)));
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// Call protocol handler
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M68kRegisters r;
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r.d[0] = type; // Packet type
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r.d[1] = p->length - 14; // Remaining packet length (without header, for ReadPacket)
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r.a[0] = packet + 14; // Pointer to packet (Mac address, for ReadPacket)
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r.a[3] = ether_data + ed_RHA + 14; // Pointer behind header in RHA
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r.a[4] = ether_data + ed_ReadPacket; // Pointer to ReadPacket/ReadRest routines
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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]));
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Execute68k(prot->handler, &r);
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}
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next: p->cmd = 0; // Free packet
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rd_pos = (rd_pos + 1) % READ_PACKET_COUNT;
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p = &net_buffer_ptr->read[rd_pos];
|
|
}
|
|
}
|
|
D(bug(" EtherIRQ done\n"));
|
|
}
|