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@@ -33,10 +33,17 @@
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#error define CONFIG_NET_MULTI to use netconsole
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#error define CONFIG_NET_MULTI to use netconsole
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#endif
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#endif
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-static uchar nc_buf = 0; /* input buffer */
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+static char input_buffer[512];
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+static int input_size = 0; /* char count in input buffer */
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+static int input_offset = 0; /* offset to valid chars in input buffer */
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static int input_recursion = 0;
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static int input_recursion = 0;
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static int output_recursion = 0;
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static int output_recursion = 0;
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static int net_timeout;
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static int net_timeout;
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+static uchar nc_ether[6]; /* server enet address */
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+static IPaddr_t nc_ip; /* server ip */
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+static short nc_port; /* source/target port */
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+static const char *output_packet; /* used by first send udp */
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+static int output_packet_len = 0;
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static void nc_wait_arp_handler (uchar * pkt, unsigned dest, unsigned src,
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static void nc_wait_arp_handler (uchar * pkt, unsigned dest, unsigned src,
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unsigned len)
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unsigned len)
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@@ -47,7 +54,7 @@ static void nc_wait_arp_handler (uchar * pkt, unsigned dest, unsigned src,
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static void nc_handler (uchar * pkt, unsigned dest, unsigned src,
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static void nc_handler (uchar * pkt, unsigned dest, unsigned src,
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unsigned len)
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unsigned len)
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{
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{
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- if (nc_buf)
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+ if (input_size)
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NetState = NETLOOP_SUCCESS; /* got input - quit net loop */
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NetState = NETLOOP_SUCCESS; /* got input - quit net loop */
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}
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}
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@@ -58,23 +65,45 @@ static void nc_timeout (void)
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void NcStart (void)
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void NcStart (void)
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{
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{
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- if (memcmp (NetServerEther, NetEtherNullAddr, 6)) {
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+ if (!output_packet_len || memcmp (nc_ether, NetEtherNullAddr, 6)) {
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/* going to check for input packet */
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/* going to check for input packet */
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NetSetHandler (nc_handler);
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NetSetHandler (nc_handler);
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NetSetTimeout (net_timeout, nc_timeout);
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NetSetTimeout (net_timeout, nc_timeout);
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} else {
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} else {
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/* send arp request */
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/* send arp request */
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+ uchar *pkt;
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NetSetHandler (nc_wait_arp_handler);
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NetSetHandler (nc_wait_arp_handler);
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- NetSendUDPPacket (NetServerEther, NetServerIP, 6665, 6666, 0);
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+ pkt = (uchar *) NetTxPacket + NetEthHdrSize () + IP_HDR_SIZE;
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+ memcpy (pkt, output_packet, output_packet_len);
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+ NetSendUDPPacket (nc_ether, nc_ip, nc_port, nc_port, output_packet_len);
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}
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}
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}
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}
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int nc_input_packet (uchar * pkt, unsigned dest, unsigned src, unsigned len)
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int nc_input_packet (uchar * pkt, unsigned dest, unsigned src, unsigned len)
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{
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{
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- if (dest != 6666 || !len)
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+ int end, chunk;
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+
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+ if (dest != nc_port || !len)
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return 0; /* not for us */
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return 0; /* not for us */
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- nc_buf = *pkt;
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+ if (input_size == sizeof input_buffer)
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+ return 1; /* no space */
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+ if (len > sizeof input_buffer - input_size)
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+ len = sizeof input_buffer - input_size;
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+
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+ end = input_offset + input_size;
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+ if (end > sizeof input_buffer)
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+ end -= sizeof input_buffer;
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+
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+ chunk = len;
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+ if (end + len > sizeof input_buffer) {
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+ chunk = sizeof input_buffer - end;
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+ memcpy(input_buffer, pkt + chunk, len - chunk);
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+ }
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+ memcpy (input_buffer + end, pkt, chunk);
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+
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+ input_size += len;
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+
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return 1;
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return 1;
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}
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}
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@@ -85,11 +114,20 @@ static void nc_send_packet (const char *buf, int len)
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struct eth_device *eth;
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struct eth_device *eth;
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int inited = 0;
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int inited = 0;
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uchar *pkt;
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uchar *pkt;
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+ uchar *ether;
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+ IPaddr_t ip;
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- if (!memcmp (NetServerEther, NetEtherNullAddr, 6))
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+ if ((eth = eth_get_dev ()) == NULL) {
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return;
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return;
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+ }
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- if ((eth = eth_get_dev ()) == NULL) {
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+ if (!memcmp (nc_ether, NetEtherNullAddr, 6)) {
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+ if (eth->state == ETH_STATE_ACTIVE)
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+ return; /* inside net loop */
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+ output_packet = buf;
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+ output_packet_len = len;
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+ NetLoop (NETCONS); /* wait for arp reply and send packet */
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+ output_packet_len = 0;
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return;
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return;
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}
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}
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@@ -100,7 +138,9 @@ static void nc_send_packet (const char *buf, int len)
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}
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}
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pkt = (uchar *) NetTxPacket + NetEthHdrSize () + IP_HDR_SIZE;
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pkt = (uchar *) NetTxPacket + NetEthHdrSize () + IP_HDR_SIZE;
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memcpy (pkt, buf, len);
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memcpy (pkt, buf, len);
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- NetSendUDPPacket (NetServerEther, NetServerIP, 6666, 6665, len);
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+ ether = nc_ether;
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+ ip = nc_ip;
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+ NetSendUDPPacket (ether, ip, nc_port, nc_port, len);
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if (inited)
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if (inited)
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eth_halt ();
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eth_halt ();
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@@ -108,10 +148,31 @@ static void nc_send_packet (const char *buf, int len)
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int nc_start (void)
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int nc_start (void)
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{
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{
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- if (memcmp (NetServerEther, NetEtherNullAddr, 6))
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- return 0;
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-
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- return NetLoop (NETCONS); /* wait for arp reply */
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+ int netmask, our_ip;
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+
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+ nc_port = 6666; /* default port */
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+
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+ if (getenv ("ncip")) {
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+ nc_ip = getenv_IPaddr ("ncip");
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+ if (!nc_ip)
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+ return -1; /* ncip is 0.0.0.0 */
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+ char *p = strchr (getenv ("ncip"), ':');
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+ if (p)
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+ nc_port = simple_strtoul (p + 1, NULL, 10);
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+ } else
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+ nc_ip = ~0; /* ncip is not set */
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+
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+ our_ip = getenv_IPaddr ("ipaddr");
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+ netmask = getenv_IPaddr ("netmask");
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+
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+ if (nc_ip == ~0 || /* 255.255.255.255 */
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+ ((netmask & our_ip) == (netmask & nc_ip) && /* on the same net */
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+ (netmask | nc_ip) == ~0)) /* broadcast to our net */
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+ memset (nc_ether, 0xff, sizeof nc_ether);
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+ else
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+ memset (nc_ether, 0, sizeof nc_ether); /* force arp request */
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+
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+ return 0;
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}
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}
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void nc_putc (char c)
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void nc_putc (char c)
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@@ -146,15 +207,18 @@ int nc_getc (void)
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input_recursion = 1;
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input_recursion = 1;
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net_timeout = 0; /* no timeout */
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net_timeout = 0; /* no timeout */
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- while (!nc_buf)
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+ while (!input_size)
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NetLoop (NETCONS);
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NetLoop (NETCONS);
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input_recursion = 0;
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input_recursion = 0;
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- uchar tmp = nc_buf;
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+ uchar c = input_buffer[input_offset];
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+ input_offset++;
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+ if (input_offset >= sizeof input_buffer)
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+ input_offset -= sizeof input_buffer;
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+ input_size--;
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- nc_buf = 0;
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- return tmp;
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+ return c;
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}
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}
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int nc_tstc (void)
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int nc_tstc (void)
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@@ -164,7 +228,7 @@ int nc_tstc (void)
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if (input_recursion)
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if (input_recursion)
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return 0;
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return 0;
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- if (nc_buf)
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+ if (input_size)
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return 1;
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return 1;
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eth = eth_get_dev ();
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eth = eth_get_dev ();
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@@ -174,11 +238,11 @@ int nc_tstc (void)
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input_recursion = 1;
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input_recursion = 1;
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net_timeout = 1;
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net_timeout = 1;
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- NetLoop (NETCONS); /* kind of poll */
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+ NetLoop (NETCONS); /* kind of poll */
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input_recursion = 0;
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input_recursion = 0;
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- return nc_buf != 0;
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+ return input_size != 0;
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}
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}
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int drv_nc_init (void)
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int drv_nc_init (void)
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