net_io.c

来自「eCos操作系统源码」· C语言 代码 · 共 861 行 · 第 1/2 页

    CYGARC_HAL_RESTORE_GP();
    return ret;
}

static int
net_io_isr(void *__ch_data, int* __ctrlc, 
           CYG_ADDRWORD __vector, CYG_ADDRWORD __data)
{
    char ch;

    CYGARC_HAL_SAVE_GP();
    *__ctrlc = 0;
    if (net_io_getc_nonblock(__ch_data, &ch)) {
        if (ch == 0x03) {
            *__ctrlc = 1;
        }
    }
    CYGARC_HAL_RESTORE_GP();
    return CYG_ISR_HANDLED;
}

// TEMP

int 
start_console(void)
{
    int cur_console =
        CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);

#ifdef CYGSEM_REDBOOT_FLASH_CONFIG
    int i = 0;
    if ( flash_get_config( "info_console_force", &i, CONFIG_BOOL) )
        if ( i )
            if ( ! flash_get_config( "info_console_number", &i, CONFIG_INT) )
                i = 0; // the default, if that call failed.
    if ( i )
        CYGACC_CALL_IF_SET_CONSOLE_COMM(i);
    else
#endif
        CYGACC_CALL_IF_SET_CONSOLE_COMM(0);

    return cur_console;
}

void
end_console(int old_console)
{
    // Restore original console
    CYGACC_CALL_IF_SET_CONSOLE_COMM(old_console);
}
// TEMP

static void
net_io_revert_console(void)
{
#ifdef CYGPKG_REDBOOT_ANY_CONSOLE
    console_selected = false;
#endif
    CYGACC_CALL_IF_SET_CONSOLE_COMM(orig_console);
    CYGACC_CALL_IF_SET_DEBUG_COMM(orig_debug);
    console_echo = true;
}

static void
net_io_assume_console(void)
{
#ifdef CYGPKG_REDBOOT_ANY_CONSOLE
    console_selected = true;
#endif
    console_echo = false;
    orig_console = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
    CYGACC_CALL_IF_SET_CONSOLE_COMM(TCP_CHANNEL);
    orig_debug = CYGACC_CALL_IF_SET_DEBUG_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
    CYGACC_CALL_IF_SET_DEBUG_COMM(TCP_CHANNEL);
}

static void
net_io_init(void)
{
    static int init = 0;
    if (!init) {
        hal_virtual_comm_table_t* comm;
        int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);

        // Setup procs in the vector table
        CYGACC_CALL_IF_SET_CONSOLE_COMM(TCP_CHANNEL);
        comm = CYGACC_CALL_IF_CONSOLE_PROCS();
        //CYGACC_COMM_IF_CH_DATA_SET(*comm, chan);
        CYGACC_COMM_IF_WRITE_SET(*comm, net_io_write);
        CYGACC_COMM_IF_READ_SET(*comm, net_io_read);
        CYGACC_COMM_IF_PUTC_SET(*comm, net_io_putc);
        CYGACC_COMM_IF_GETC_SET(*comm, net_io_getc);
        CYGACC_COMM_IF_CONTROL_SET(*comm, net_io_control);
        CYGACC_COMM_IF_DBG_ISR_SET(*comm, net_io_isr);
        CYGACC_COMM_IF_GETC_TIMEOUT_SET(*comm, net_io_getc_timeout);

        // Disable interrupts via this interface to set static
        // state into correct state.
        net_io_control( comm, __COMMCTL_IRQ_DISABLE );
        
        // Restore original console
        CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);

        init = 1;
        gdb_active = false;
    }
    __tcp_listen(&tcp_sock, gdb_port);
    state = tcp_sock.state; 
#ifdef DEBUG_TCP
    diag_printf("show tcp = %p\n", (void *)&show_tcp);
#endif
}

// Check for incoming TCP debug connection
void
net_io_test(bool is_idle)
{
    if (!is_idle) return;  // Only care about idle case
    if (!have_net) return;
    __tcp_poll();
    if (state != tcp_sock.state) {
        // Something has changed
        if (tcp_sock.state == _ESTABLISHED) {
            // A new connection has arrived
            net_io_assume_console();
            in_bufp = in_buf;  in_buflen = 1;  *in_bufp = '\r';
            out_bufp = out_buf;  out_buflen = 0;
        }
        if (tcp_sock.state == _CLOSED) {
            net_io_init();  // Get ready for another connection
        }
    }
    state = tcp_sock.state;
}

// This schedules the 'net_io_test()' function to be run by RedBoot's
// main command loop when idle (i.e. when no input arrives after some
// period of time).
RedBoot_idle(net_io_test, RedBoot_IDLE_NETIO);

//
// Network initialization
//
#include <cyg/io/eth/eth_drv.h>
#include <cyg/io/eth/netdev.h>
#include <cyg/hal/hal_tables.h>

// Define table boundaries
CYG_HAL_TABLE_BEGIN( __NETDEVTAB__, netdev );
CYG_HAL_TABLE_END( __NETDEVTAB_END__, netdev );

RedBoot_init(net_init, RedBoot_INIT_LAST);

static void
show_addrs(void)
{
    diag_printf("IP: %s", inet_ntoa((in_addr_t *)&__local_ip_addr));
#ifdef CYGSEM_REDBOOT_NETWORKING_USE_GATEWAY
    diag_printf("/%s", inet_ntoa((in_addr_t *)&__local_ip_mask));
    diag_printf(", Gateway: %s\n", inet_ntoa((in_addr_t *)&__local_ip_gate));
#else
    diag_printf(", ");
#endif
    diag_printf("Default server: %s", inet_ntoa(&my_bootp_info.bp_siaddr));
#ifdef CYGPKG_REDBOOT_NETWORKING_DNS
    show_dns();
#endif
    diag_printf("\n");
}

#ifdef CYGSEM_REDBOOT_FLASH_CONFIG
static void
flash_get_IP(char *id, ip_addr_t *val)
{
    ip_addr_t my_ip;
    int i;

    if (flash_get_config(id, &my_ip, CONFIG_IP)) {
        if (my_ip[0] != 0 || my_ip[1] != 0 ||
            my_ip[2] != 0 || my_ip[3] != 0) {
            // 'id' is set to something so let it override any static IP
            for (i=0; i<4; i++)
                (*val)[i] = my_ip[i];
        }        
    }
}
#endif

static cyg_netdevtab_entry_t *
net_devtab_entry(unsigned index)
{
    cyg_netdevtab_entry_t *t = &__NETDEVTAB__[index];

    if (t < &__NETDEVTAB__[0] || t >= &__NETDEVTAB_END__)
	return NULL;

    return t;
}

const char *
net_devname(unsigned index)
{
    cyg_netdevtab_entry_t *t = net_devtab_entry(index);
    if (t)
	return t->name;
    return NULL;
}

int
net_devindex(char *name)
{
    const char *devname;
    int index;

    for (index = 0; (devname = net_devname(index)) != NULL; index++)
	if (!strcmp(name, devname))
	    return index;
    return -1;
}

static void
show_eth_info(void)
{
    diag_printf("Ethernet %s: MAC address %02x:%02x:%02x:%02x:%02x:%02x\n",
                __local_enet_sc->dev_name,
                __local_enet_addr[0],
                __local_enet_addr[1],
                __local_enet_addr[2],
                __local_enet_addr[3],
                __local_enet_addr[4],
                __local_enet_addr[5]);
}

void
net_init(void)
{
    cyg_netdevtab_entry_t *t;
    unsigned index;
    struct eth_drv_sc *primary_net = (struct eth_drv_sc *)0;
#if defined(CYGHWR_NET_DRIVERS) && (CYGHWR_NET_DRIVERS > 1)
    char *default_devname;
    int default_index;
#endif

    // Set defaults as appropriate
#ifdef CYGSEM_REDBOOT_DEFAULT_NO_BOOTP
    use_bootp = false;
#else
    use_bootp = true;
#endif
#ifdef CYGDBG_REDBOOT_NET_DEBUG
    net_debug = true;
#else
    net_debug = false;
#endif
    gdb_port = CYGNUM_REDBOOT_NETWORKING_TCP_PORT;
#ifdef CYGSEM_REDBOOT_FLASH_CONFIG
    // Fetch values from saved config data, if available
#if defined(CYGHWR_NET_DRIVERS) && (CYGHWR_NET_DRIVERS > 1)
    flash_get_config("net_device", &default_devname, CONFIG_NETPORT);
#endif
    flash_get_config("net_debug", &net_debug, CONFIG_BOOL);
    flash_get_config("gdb_port", &gdb_port, CONFIG_INT);
    flash_get_config("bootp", &use_bootp, CONFIG_BOOL);
    if (!use_bootp) {
        flash_get_IP("bootp_my_ip", &__local_ip_addr);
#ifdef CYGSEM_REDBOOT_NETWORKING_USE_GATEWAY
        flash_get_IP("bootp_my_ip_mask", &__local_ip_mask);
        flash_get_IP("bootp_my_gateway_ip", &__local_ip_gate);
#endif
    }
#endif
# ifdef CYGDBG_IO_ETH_DRIVERS_DEBUG
    // Don't override if the user has deliberately set something more
    // verbose.
    if (0 == cyg_io_eth_net_debug)
        cyg_io_eth_net_debug = net_debug;
# endif
    have_net = false;
    // Make sure the recv buffers are set up
    eth_drv_buffers_init();
    __pktbuf_init();

    // Initialize network device(s).
#if defined(CYGHWR_NET_DRIVERS) && (CYGHWR_NET_DRIVERS > 1)
    default_index = net_devindex(default_devname);
    if (default_index < 0)
	default_index = 0;
#endif
    for (index = 0; (t = net_devtab_entry(index)) != NULL; index++) {
	if (t->init(t)) {
            t->status = CYG_NETDEVTAB_STATUS_AVAIL;
            if (primary_net == (struct eth_drv_sc *)0) {
                primary_net = __local_enet_sc;
            }
#if defined(CYGHWR_NET_DRIVERS) && (CYGHWR_NET_DRIVERS > 1)
            if (index == default_index) {
                primary_net = __local_enet_sc;
            }
#endif
        }
    }
    __local_enet_sc = primary_net;

    if (!__local_enet_sc) {
        diag_printf("No network interfaces found\n");
        return;
    }    
    // Initialize the network [if present]
    if (use_bootp) {
        if (__bootp_find_local_ip(&my_bootp_info) == 0) {
            have_net = true;
        } else {
            // Is it an unset address, or has it been set to a static addr
            if (__local_ip_addr[0] == 0 && __local_ip_addr[1] == 0 &&
                __local_ip_addr[2] == 0 && __local_ip_addr[3] == 0) {
                show_eth_info();
                diag_printf("Can't get BOOTP info for device!\n");
            } else {
                diag_printf("Can't get BOOTP info, using default IP address\n");
                have_net = true;
            }
        }
    } else {
        enet_addr_t enet_addr;
        have_net = true;  // Assume values in FLASH were OK
        // Tell the world that we are using this fixed IP address
        if (__arp_request((ip_addr_t *)__local_ip_addr, &enet_addr, 1) >= 0) {
            diag_printf("Warning: IP address %s in use\n", inet_ntoa((in_addr_t *)&__local_ip_addr));
        }
    }
    if (have_net) {
        show_eth_info();

#ifdef CYGSEM_REDBOOT_FLASH_CONFIG
        flash_get_IP("bootp_server_ip", (ip_addr_t *)&my_bootp_info.bp_siaddr);
#endif
#ifdef CYGPKG_REDBOOT_NETWORKING_DNS
	redboot_dns_res_init();
#endif
        show_addrs();
        net_io_init();
    }
}

static char usage[] = "[-l <local_ip_address>[/<mask_len>]] [-h <server_address>]";

// Exported CLI function
static void do_ip_addr(int argc, char *argv[]);
RedBoot_cmd("ip_address", 
            "Set/change IP addresses", 
            usage,
            do_ip_addr
    );

void 
do_ip_addr(int argc, char *argv[])
{
    struct option_info opts[3];
    char *ip_addr, *host_addr;
    bool ip_addr_set, host_addr_set;
    struct sockaddr_in host;
#ifdef CYGPKG_REDBOOT_NETWORKING_DNS
    char *dns_addr;
    bool dns_addr_set;
#endif
    int num_opts;

    init_opts(&opts[0], 'l', true, OPTION_ARG_TYPE_STR, 
              (void *)&ip_addr, (bool *)&ip_addr_set, "local IP address");
    init_opts(&opts[1], 'h', true, OPTION_ARG_TYPE_STR, 
              (void *)&host_addr, (bool *)&host_addr_set, "default server address");
    num_opts = 2;
#ifdef CYGPKG_REDBOOT_NETWORKING_DNS
    init_opts(&opts[2], 'd', true, OPTION_ARG_TYPE_STR, 
              (void *)&dns_addr, (bool *)&dns_addr_set, "DNS server address");
    num_opts++;
#endif

    CYG_ASSERT(num_opts <= NUM_ELEMS(opts), "Too many options");

    if (!scan_opts(argc, argv, 1, opts, num_opts, 0, 0, "")) {
        return;
    }
    if (ip_addr_set) {
#ifdef CYGSEM_REDBOOT_NETWORKING_USE_GATEWAY
        char *slash_pos;
        /* see if the (optional) mask length was given */
        if( (slash_pos = strchr(ip_addr, '/')) ) {
            int mask_len;
            unsigned long mask;
            *slash_pos = '\0';
            slash_pos++;
            if( !parse_num(slash_pos, (unsigned long *)&mask_len, 0, 0) ||  
                mask_len <= 0 || mask_len > 32 ) {
                diag_printf("Invalid mask length: %s\n", slash_pos);
                return;
            }
            mask = htonl((0xffffffff << (32-mask_len))&0xffffffff);
            memcpy(&__local_ip_mask, &mask, 4);
        }
#endif        
        if (!_gethostbyname(ip_addr, (in_addr_t *)&host)) {
            diag_printf("Invalid local IP address: %s\n", ip_addr);
            return;
        }
        // Of course, each address goes in its own place :-)
        memcpy(&__local_ip_addr, &host.sin_addr, sizeof(host.sin_addr));
    }
    if (host_addr_set) {
        if (!_gethostbyname(host_addr, (in_addr_t *)&host)) {
            diag_printf("Invalid server address: %s\n", host_addr);
            return;
        }
        my_bootp_info.bp_siaddr = host.sin_addr;
    }
#ifdef CYGPKG_REDBOOT_NETWORKING_DNS
    if (dns_addr_set) {
        set_dns(dns_addr);
    }
#endif
    show_addrs();
    if (!have_net) {
        have_net = true;
        net_io_init();
    }
}

// EOF net_io.c