X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fnet%2Fnetconsole.c;h=350004757715011de9de0bb5b9176e36059dea1a;hb=596e5782e7bdec7ed275b1204122364a3ab4fbf7;hp=8fcf31c4e9bb612e900bbcf20a9d9641afb27568;hpb=2c8fe5120f8da013cbd789be2f10cce880972836;p=oweals%2Fu-boot.git diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index 8fcf31c4e9..3500047577 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -2,23 +2,7 @@ * (C) Copyright 2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA + * SPDX-License-Identifier: GPL-2.0+ */ #include @@ -39,55 +23,128 @@ static int input_recursion; static int output_recursion; static int net_timeout; static uchar nc_ether[6]; /* server enet address */ -static IPaddr_t nc_ip; /* server ip */ +static struct in_addr nc_ip; /* server ip */ static short nc_out_port; /* target output port */ static short nc_in_port; /* source input port */ static const char *output_packet; /* used by first send udp */ static int output_packet_len; +/* + * Start with a default last protocol. + * We are only interested in NETCONS or not. + */ +enum proto_t net_loop_last_protocol = BOOTP; static void nc_wait_arp_handler(uchar *pkt, unsigned dest, - IPaddr_t sip, unsigned src, + struct in_addr sip, unsigned src, unsigned len) { net_set_state(NETLOOP_SUCCESS); /* got arp reply - quit net loop */ } -static void nc_handler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src, - unsigned len) +static void nc_handler(uchar *pkt, unsigned dest, struct in_addr sip, + unsigned src, unsigned len) { if (input_size) net_set_state(NETLOOP_SUCCESS); /* got input - quit net loop */ } -static void nc_timeout(void) +static void nc_timeout_handler(void) { net_set_state(NETLOOP_SUCCESS); } -void NcStart(void) +static int is_broadcast(struct in_addr ip) +{ + static struct in_addr netmask; + static struct in_addr our_ip; + static int env_changed_id; + int env_id = get_env_id(); + + /* update only when the environment has changed */ + if (env_changed_id != env_id) { + netmask = getenv_ip("netmask"); + our_ip = getenv_ip("ipaddr"); + + env_changed_id = env_id; + } + + return (ip.s_addr == ~0 || /* 255.255.255.255 (global bcast) */ + ((netmask.s_addr & our_ip.s_addr) == + (netmask.s_addr & ip.s_addr) && /* on the same net and */ + (netmask.s_addr | ip.s_addr) == ~0)); /* bcast to our net */ +} + +static int refresh_settings_from_env(void) +{ + const char *p; + static int env_changed_id; + int env_id = get_env_id(); + + /* update only when the environment has changed */ + if (env_changed_id != env_id) { + if (getenv("ncip")) { + nc_ip = getenv_ip("ncip"); + if (!nc_ip.s_addr) + return -1; /* ncip is 0.0.0.0 */ + p = strchr(getenv("ncip"), ':'); + if (p != NULL) { + nc_out_port = simple_strtoul(p + 1, NULL, 10); + nc_in_port = nc_out_port; + } + } else { + nc_ip.s_addr = ~0; /* ncip is not set, so broadcast */ + } + + p = getenv("ncoutport"); + if (p != NULL) + nc_out_port = simple_strtoul(p, NULL, 10); + p = getenv("ncinport"); + if (p != NULL) + nc_in_port = simple_strtoul(p, NULL, 10); + + if (is_broadcast(nc_ip)) + /* broadcast MAC address */ + memset(nc_ether, 0xff, sizeof(nc_ether)); + else + /* force arp request */ + memset(nc_ether, 0, sizeof(nc_ether)); + } + return 0; +} + +/** + * Called from net_loop in net/net.c before each packet + */ +void nc_start(void) { - if (!output_packet_len || memcmp(nc_ether, NetEtherNullAddr, 6)) { + refresh_settings_from_env(); + if (!output_packet_len || memcmp(nc_ether, net_null_ethaddr, 6)) { /* going to check for input packet */ net_set_udp_handler(nc_handler); - NetSetTimeout(net_timeout, nc_timeout); + net_set_timeout_handler(net_timeout, nc_timeout_handler); } else { /* send arp request */ uchar *pkt; net_set_arp_handler(nc_wait_arp_handler); - pkt = (uchar *)NetTxPacket + NetEthHdrSize() + IP_UDP_HDR_SIZE; + pkt = (uchar *)net_tx_packet + net_eth_hdr_size() + + IP_UDP_HDR_SIZE; memcpy(pkt, output_packet, output_packet_len); - NetSendUDPPacket(nc_ether, nc_ip, nc_out_port, nc_in_port, - output_packet_len); + net_send_udp_packet(nc_ether, nc_ip, nc_out_port, nc_in_port, + output_packet_len); } } -int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len) +int nc_input_packet(uchar *pkt, struct in_addr src_ip, unsigned dest_port, + unsigned src_port, unsigned len) { int end, chunk; - if (dest != nc_in_port || !len) + if (dest_port != nc_in_port || !len) return 0; /* not for us */ + if (src_ip.s_addr != nc_ip.s_addr && !is_broadcast(nc_ip)) + return 0; /* not from our client */ + debug_cond(DEBUG_DEV_PKT, "input: \"%*.*s\"\n", len, len, pkt); if (input_size == sizeof(input_buffer)) @@ -113,11 +170,15 @@ int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len) static void nc_send_packet(const char *buf, int len) { +#ifdef CONFIG_DM_ETH + struct udevice *eth; +#else struct eth_device *eth; +#endif int inited = 0; uchar *pkt; uchar *ether; - IPaddr_t ip; + struct in_addr ip; debug_cond(DEBUG_DEV_PKT, "output: \"%*.*s\"\n", len, len, buf); @@ -125,79 +186,64 @@ static void nc_send_packet(const char *buf, int len) if (eth == NULL) return; - if (!memcmp(nc_ether, NetEtherNullAddr, 6)) { - if (eth->state == ETH_STATE_ACTIVE) + if (!memcmp(nc_ether, net_null_ethaddr, 6)) { + if (eth_is_active(eth)) return; /* inside net loop */ output_packet = buf; output_packet_len = len; - NetLoop(NETCONS); /* wait for arp reply and send packet */ + input_recursion = 1; + net_loop(NETCONS); /* wait for arp reply and send packet */ + input_recursion = 0; output_packet_len = 0; return; } - if (eth->state != ETH_STATE_ACTIVE) { - if (eth_init(gd->bd) < 0) - return; + if (!eth_is_active(eth)) { + if (eth_is_on_demand_init()) { + if (eth_init() < 0) + return; + eth_set_last_protocol(NETCONS); + } else { + eth_init_state_only(); + } + inited = 1; } - pkt = (uchar *)NetTxPacket + NetEthHdrSize() + IP_UDP_HDR_SIZE; + pkt = (uchar *)net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE; memcpy(pkt, buf, len); ether = nc_ether; ip = nc_ip; - NetSendUDPPacket(ether, ip, nc_out_port, nc_in_port, len); + net_send_udp_packet(ether, ip, nc_out_port, nc_in_port, len); - if (inited) - eth_halt(); + if (inited) { + if (eth_is_on_demand_init()) + eth_halt(); + else + eth_halt_state_only(); + } } -static int nc_start(void) +static int nc_stdio_start(struct stdio_dev *dev) { - int netmask, our_ip; - char *p; + int retval; nc_out_port = 6666; /* default port */ nc_in_port = nc_out_port; - if (getenv("ncip")) { - - nc_ip = getenv_IPaddr("ncip"); - if (!nc_ip) - return -1; /* ncip is 0.0.0.0 */ - p = strchr(getenv("ncip"), ':'); - if (p != NULL) { - nc_out_port = simple_strtoul(p + 1, NULL, 10); - nc_in_port = nc_out_port; - } - } else - nc_ip = ~0; /* ncip is not set, so broadcast */ - - p = getenv("ncoutport"); - if (p != NULL) - nc_out_port = simple_strtoul(p, NULL, 10); - p = getenv("ncinport"); - if (p != NULL) - nc_in_port = simple_strtoul(p, NULL, 10); - - our_ip = getenv_IPaddr("ipaddr"); - netmask = getenv_IPaddr("netmask"); - - if (nc_ip == ~0 || /* 255.255.255.255 */ - ((netmask & our_ip) == (netmask & nc_ip) && /* on the same net */ - (netmask | nc_ip) == ~0)) /* broadcast to our net */ - memset(nc_ether, 0xff, sizeof(nc_ether)); - else - memset(nc_ether, 0, sizeof(nc_ether)); /* force arp request */ + retval = refresh_settings_from_env(); + if (retval != 0) + return retval; /* * Initialize the static IP settings and buffer pointers - * incase we call NetSendUDPPacket before NetLoop + * incase we call net_send_udp_packet before net_loop */ net_init(); return 0; } -static void nc_putc(char c) +static void nc_stdio_putc(struct stdio_dev *dev, char c) { if (output_recursion) return; @@ -208,7 +254,7 @@ static void nc_putc(char c) output_recursion = 0; } -static void nc_puts(const char *s) +static void nc_stdio_puts(struct stdio_dev *dev, const char *s) { int len; @@ -218,7 +264,7 @@ static void nc_puts(const char *s) len = strlen(s); while (len) { - int send_len = min(len, sizeof(input_buffer)); + int send_len = min(len, (int)sizeof(input_buffer)); nc_send_packet(s, send_len); len -= send_len; s += send_len; @@ -227,7 +273,7 @@ static void nc_puts(const char *s) output_recursion = 0; } -static int nc_getc(void) +static int nc_stdio_getc(struct stdio_dev *dev) { uchar c; @@ -235,7 +281,7 @@ static int nc_getc(void) net_timeout = 0; /* no timeout */ while (!input_size) - NetLoop(NETCONS); + net_loop(NETCONS); input_recursion = 0; @@ -248,9 +294,13 @@ static int nc_getc(void) return c; } -static int nc_tstc(void) +static int nc_stdio_tstc(struct stdio_dev *dev) { +#ifdef CONFIG_DM_ETH + struct udevice *eth; +#else struct eth_device *eth; +#endif if (input_recursion) return 0; @@ -259,13 +309,13 @@ static int nc_tstc(void) return 1; eth = eth_get_dev(); - if (eth && eth->state == ETH_STATE_ACTIVE) + if (eth_is_active(eth)) return 0; /* inside net loop */ input_recursion = 1; net_timeout = 1; - NetLoop(NETCONS); /* kind of poll */ + net_loop(NETCONS); /* kind of poll */ input_recursion = 0; @@ -280,12 +330,12 @@ int drv_nc_init(void) memset(&dev, 0, sizeof(dev)); strcpy(dev.name, "nc"); - dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM; - dev.start = nc_start; - dev.putc = nc_putc; - dev.puts = nc_puts; - dev.getc = nc_getc; - dev.tstc = nc_tstc; + dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT; + dev.start = nc_stdio_start; + dev.putc = nc_stdio_putc; + dev.puts = nc_stdio_puts; + dev.getc = nc_stdio_getc; + dev.tstc = nc_stdio_tstc; rc = stdio_register(&dev);