#include <common.h>
#include <watchdog.h>
#include <command.h>
+#include <linux/compiler.h>
#include <net.h>
+#include "arp.h"
#include "bootp.h"
#include "tftp.h"
#include "rarp.h"
#if defined(CONFIG_CMD_SNTP)
#include "sntp.h"
#endif
-#if defined(CONFIG_CDP_VERSION)
-#include <timestamp.h>
-#endif
+#include "cdp.h"
#if defined(CONFIG_CMD_DNS)
#include "dns.h"
#endif
-
-#if defined(CONFIG_CMD_NET)
+#include "ping.h"
DECLARE_GLOBAL_DATA_PTR;
-#ifndef CONFIG_ARP_TIMEOUT
-# define ARP_TIMEOUT 5000UL /* Milliseconds before trying ARP again */
-#else
-# define ARP_TIMEOUT CONFIG_ARP_TIMEOUT
-#endif
-
-
-#ifndef CONFIG_NET_RETRY_COUNT
-# define ARP_TIMEOUT_COUNT 5 /* # of timeouts before giving up */
-#else
-# define ARP_TIMEOUT_COUNT CONFIG_NET_RETRY_COUNT
-#endif
-
-#if 0
-#define ET_DEBUG
-#endif
-
/** BOOTP EXTENTIONS **/
-IPaddr_t NetOurSubnetMask=0; /* Our subnet mask (0=unknown) */
-IPaddr_t NetOurGatewayIP=0; /* Our gateways IP address */
-IPaddr_t NetOurDNSIP=0; /* Our DNS IP address */
+/* Our subnet mask (0=unknown) */
+IPaddr_t NetOurSubnetMask;
+/* Our gateways IP address */
+IPaddr_t NetOurGatewayIP;
+/* Our DNS IP address */
+IPaddr_t NetOurDNSIP;
#if defined(CONFIG_BOOTP_DNS2)
-IPaddr_t NetOurDNS2IP=0; /* Our 2nd DNS IP address */
-#endif
-char NetOurNISDomain[32]={0,}; /* Our NIS domain */
-char NetOurHostName[32]={0,}; /* Our hostname */
-char NetOurRootPath[64]={0,}; /* Our bootpath */
-ushort NetBootFileSize=0; /* Our bootfile size in blocks */
+/* Our 2nd DNS IP address */
+IPaddr_t NetOurDNS2IP;
+#endif
+/* Our NIS domain */
+char NetOurNISDomain[32] = {0,};
+/* Our hostname */
+char NetOurHostName[32] = {0,};
+/* Our bootpath */
+char NetOurRootPath[64] = {0,};
+/* Our bootfile size in blocks */
+ushort NetBootFileSize;
#ifdef CONFIG_MCAST_TFTP /* Multicast TFTP */
IPaddr_t Mcast_addr;
/** END OF BOOTP EXTENTIONS **/
-ulong NetBootFileXferSize; /* The actual transferred size of the bootfile (in bytes) */
-uchar NetOurEther[6]; /* Our ethernet address */
-uchar NetServerEther[6] = /* Boot server enet address */
- { 0, 0, 0, 0, 0, 0 };
-IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */
-IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */
-volatile uchar *NetRxPacket; /* Current receive packet */
-int NetRxPacketLen; /* Current rx packet length */
-unsigned NetIPID; /* IP packet ID */
-uchar NetBcastAddr[6] = /* Ethernet bcast address */
- { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
-uchar NetEtherNullAddr[6] =
- { 0, 0, 0, 0, 0, 0 };
+/* The actual transferred size of the bootfile (in bytes) */
+ulong NetBootFileXferSize;
+/* Our ethernet address */
+uchar NetOurEther[6];
+/* Boot server enet address */
+uchar NetServerEther[6];
+/* Our IP addr (0 = unknown) */
+IPaddr_t NetOurIP;
+/* Server IP addr (0 = unknown) */
+IPaddr_t NetServerIP;
+/* Current receive packet */
+uchar *NetRxPacket;
+/* Current rx packet length */
+int NetRxPacketLen;
+/* IP packet ID */
+unsigned NetIPID;
+/* Ethernet bcast address */
+uchar NetBcastAddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+uchar NetEtherNullAddr[6];
#ifdef CONFIG_API
-void (*push_packet)(volatile void *, int len) = 0;
-#endif
-#if defined(CONFIG_CMD_CDP)
-uchar NetCDPAddr[6] = /* Ethernet bcast address */
- { 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc };
-#endif
-int NetState; /* Network loop state */
-#ifdef CONFIG_NET_MULTI
-int NetRestartWrap = 0; /* Tried all network devices */
-static int NetRestarted = 0; /* Network loop restarted */
-static int NetDevExists = 0; /* At least one device configured */
+void (*push_packet)(void *, int len) = 0;
#endif
+/* Network loop state */
+int NetState;
+/* Tried all network devices */
+int NetRestartWrap;
+/* Network loop restarted */
+static int NetRestarted;
+/* At least one device configured */
+static int NetDevExists;
/* XXX in both little & big endian machines 0xFFFF == ntohs(-1) */
-ushort NetOurVLAN = 0xFFFF; /* default is without VLAN */
-ushort NetOurNativeVLAN = 0xFFFF; /* ditto */
-
-char BootFile[128]; /* Boot File name */
+/* default is without VLAN */
+ushort NetOurVLAN = 0xFFFF;
+/* ditto */
+ushort NetOurNativeVLAN = 0xFFFF;
-#if defined(CONFIG_CMD_PING)
-IPaddr_t NetPingIP; /* the ip address to ping */
-
-static void PingStart(void);
-#endif
-
-#if defined(CONFIG_CMD_CDP)
-static void CDPStart(void);
-#endif
+/* Boot File name */
+char BootFile[128];
#if defined(CONFIG_CMD_SNTP)
-IPaddr_t NetNtpServerIP; /* NTP server IP address */
-int NetTimeOffset=0; /* offset time from UTC */
+/* NTP server IP address */
+IPaddr_t NetNtpServerIP;
+/* offset time from UTC */
+int NetTimeOffset;
#endif
-#ifdef CONFIG_NETCONSOLE
-void NcStart(void);
-int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len);
-#endif
+uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
-volatile uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
+/* Receive packet */
+uchar *NetRxPackets[PKTBUFSRX];
-volatile uchar *NetRxPackets[PKTBUFSRX]; /* Receive packets */
+/* Current RX packet handler */
+static rxhand_f *packetHandler;
+#ifdef CONFIG_CMD_TFTPPUT
+static rxhand_icmp_f *packet_icmp_handler; /* Current ICMP rx handler */
+#endif
+/* Current timeout handler */
+static thand_f *timeHandler;
+/* Time base value */
+static ulong timeStart;
+/* Current timeout value */
+static ulong timeDelta;
+/* THE transmit packet */
+uchar *NetTxPacket;
-static rxhand_f *packetHandler; /* Current RX packet handler */
-static thand_f *timeHandler; /* Current timeout handler */
-static ulong timeStart; /* Time base value */
-static ulong timeDelta; /* Current timeout value */
-volatile uchar *NetTxPacket = 0; /* THE transmit packet */
+static int net_check_prereq(enum proto_t protocol);
-static int net_check_prereq (proto_t protocol);
+static int NetTryCount;
/**********************************************************************/
-IPaddr_t NetArpWaitPacketIP;
-IPaddr_t NetArpWaitReplyIP;
-uchar *NetArpWaitPacketMAC; /* MAC address of waiting packet's destination */
-uchar *NetArpWaitTxPacket; /* THE transmit packet */
-int NetArpWaitTxPacketSize;
-uchar NetArpWaitPacketBuf[PKTSIZE_ALIGN + PKTALIGN];
-ulong NetArpWaitTimerStart;
-int NetArpWaitTry;
-
-void ArpRequest (void)
+/*
+ * Check if autoload is enabled. If so, use either NFS or TFTP to download
+ * the boot file.
+ */
+void net_auto_load(void)
{
- int i;
- volatile uchar *pkt;
- ARP_t *arp;
-
-#ifdef ET_DEBUG
- printf ("ARP broadcast %d\n", NetArpWaitTry);
-#endif
- pkt = NetTxPacket;
-
- pkt += NetSetEther (pkt, NetBcastAddr, PROT_ARP);
-
- arp = (ARP_t *) pkt;
-
- arp->ar_hrd = htons (ARP_ETHER);
- arp->ar_pro = htons (PROT_IP);
- arp->ar_hln = 6;
- arp->ar_pln = 4;
- arp->ar_op = htons (ARPOP_REQUEST);
-
- memcpy (&arp->ar_data[0], NetOurEther, 6); /* source ET addr */
- NetWriteIP ((uchar *) & arp->ar_data[6], NetOurIP); /* source IP addr */
- for (i = 10; i < 16; ++i) {
- arp->ar_data[i] = 0; /* dest ET addr = 0 */
- }
+ const char *s = getenv("autoload");
- if ((NetArpWaitPacketIP & NetOurSubnetMask) !=
- (NetOurIP & NetOurSubnetMask)) {
- if (NetOurGatewayIP == 0) {
- puts ("## Warning: gatewayip needed but not set\n");
- NetArpWaitReplyIP = NetArpWaitPacketIP;
- } else {
- NetArpWaitReplyIP = NetOurGatewayIP;
+ if (s != NULL) {
+ if (*s == 'n') {
+ /*
+ * Just use BOOTP/RARP to configure system;
+ * Do not use TFTP to load the bootfile.
+ */
+ NetState = NETLOOP_SUCCESS;
+ return;
}
- } else {
- NetArpWaitReplyIP = NetArpWaitPacketIP;
- }
-
- NetWriteIP ((uchar *) & arp->ar_data[16], NetArpWaitReplyIP);
- (void) eth_send (NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE);
-}
-
-void ArpTimeoutCheck(void)
-{
- ulong t;
-
- if (!NetArpWaitPacketIP)
- return;
-
- t = get_timer(0);
-
- /* check for arp timeout */
- if ((t - NetArpWaitTimerStart) > ARP_TIMEOUT) {
- NetArpWaitTry++;
-
- if (NetArpWaitTry >= ARP_TIMEOUT_COUNT) {
- puts ("\nARP Retry count exceeded; starting again\n");
- NetArpWaitTry = 0;
- NetStartAgain();
- } else {
- NetArpWaitTimerStart = t;
- ArpRequest();
+#if defined(CONFIG_CMD_NFS)
+ if (strcmp(s, "NFS") == 0) {
+ /*
+ * Use NFS to load the bootfile.
+ */
+ NfsStart();
+ return;
}
+#endif
}
+ TftpStart(TFTPGET);
}
-static void
-NetInitLoop(proto_t protocol)
+static void NetInitLoop(enum proto_t protocol)
{
- static int env_changed_id = 0;
- bd_t *bd = gd->bd;
- int env_id = get_env_id ();
+ static int env_changed_id;
+ int env_id = get_env_id();
/* update only when the environment has changed */
if (env_changed_id != env_id) {
- NetCopyIP(&NetOurIP, &bd->bi_ip_addr);
- NetOurGatewayIP = getenv_IPaddr ("gatewayip");
- NetOurSubnetMask= getenv_IPaddr ("netmask");
- NetServerIP = getenv_IPaddr ("serverip");
+ NetOurIP = getenv_IPaddr("ipaddr");
+ NetOurGatewayIP = getenv_IPaddr("gatewayip");
+ NetOurSubnetMask = getenv_IPaddr("netmask");
+ NetServerIP = getenv_IPaddr("serverip");
NetOurNativeVLAN = getenv_VLAN("nvlan");
NetOurVLAN = getenv_VLAN("vlan");
#if defined(CONFIG_CMD_DNS)
* Main network processing loop.
*/
-int
-NetLoop(proto_t protocol)
+int NetLoop(enum proto_t protocol)
{
bd_t *bd = gd->bd;
+ int ret = -1;
-#ifdef CONFIG_NET_MULTI
NetRestarted = 0;
NetDevExists = 0;
-#endif
- /* XXX problem with bss workaround */
- NetArpWaitPacketMAC = NULL;
- NetArpWaitTxPacket = NULL;
- NetArpWaitPacketIP = 0;
- NetArpWaitReplyIP = 0;
- NetArpWaitTxPacket = NULL;
NetTxPacket = NULL;
+ NetTryCount = 1;
+
+ ArpInit();
if (!NetTxPacket) {
int i;
*/
NetTxPacket = &PktBuf[0] + (PKTALIGN - 1);
NetTxPacket -= (ulong)NetTxPacket % PKTALIGN;
- for (i = 0; i < PKTBUFSRX; i++) {
+ for (i = 0; i < PKTBUFSRX; i++)
NetRxPackets[i] = NetTxPacket + (i+1)*PKTSIZE_ALIGN;
- }
- }
-
- if (!NetArpWaitTxPacket) {
- NetArpWaitTxPacket = &NetArpWaitPacketBuf[0] + (PKTALIGN - 1);
- NetArpWaitTxPacket -= (ulong)NetArpWaitTxPacket % PKTALIGN;
- NetArpWaitTxPacketSize = 0;
}
+ bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start");
eth_halt();
-#ifdef CONFIG_NET_MULTI
eth_set_current();
-#endif
if (eth_init(bd) < 0) {
eth_halt();
- return(-1);
+ return -1;
}
restart:
-#ifdef CONFIG_NET_MULTI
- memcpy (NetOurEther, eth_get_dev()->enetaddr, 6);
-#else
- eth_getenv_enetaddr("ethaddr", NetOurEther);
-#endif
+ memcpy(NetOurEther, eth_get_dev()->enetaddr, 6);
NetState = NETLOOP_CONTINUE;
*/
NetInitLoop(protocol);
- switch (net_check_prereq (protocol)) {
+ switch (net_check_prereq(protocol)) {
case 1:
/* network not configured */
eth_halt();
- return (-1);
+ return -1;
-#ifdef CONFIG_NET_MULTI
case 2:
/* network device not configured */
break;
-#endif /* CONFIG_NET_MULTI */
case 0:
-#ifdef CONFIG_NET_MULTI
NetDevExists = 1;
-#endif
+ NetBootFileXferSize = 0;
switch (protocol) {
- case TFTP:
+ case TFTPGET:
+#ifdef CONFIG_CMD_TFTPPUT
+ case TFTPPUT:
+#endif
/* always use ARP to get server ethernet address */
- TftpStart();
+ TftpStart(protocol);
break;
-
+#ifdef CONFIG_CMD_TFTPSRV
+ case TFTPSRV:
+ TftpStartServer();
+ break;
+#endif
#if defined(CONFIG_CMD_DHCP)
case DHCP:
BootpTry = 0;
case BOOTP:
BootpTry = 0;
NetOurIP = 0;
- BootpRequest ();
+ BootpRequest();
break;
+#if defined(CONFIG_CMD_RARP)
case RARP:
RarpTry = 0;
NetOurIP = 0;
- RarpRequest ();
+ RarpRequest();
break;
+#endif
#if defined(CONFIG_CMD_PING)
case PING:
- PingStart();
+ ping_start();
break;
#endif
#if defined(CONFIG_CMD_NFS)
break;
}
- NetBootFileXferSize = 0;
break;
}
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && defined(CONFIG_STATUS_LED) && defined(STATUS_LED_RED)
+#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
+ defined(CONFIG_STATUS_LED) && \
+ defined(STATUS_LED_RED)
/*
* Echo the inverted link state to the fault LED.
*/
- if(miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) {
- status_led_set (STATUS_LED_RED, STATUS_LED_OFF);
- } else {
- status_led_set (STATUS_LED_RED, STATUS_LED_ON);
- }
+ if (miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR))
+ status_led_set(STATUS_LED_RED, STATUS_LED_OFF);
+ else
+ status_led_set(STATUS_LED_RED, STATUS_LED_ON);
#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
#endif /* CONFIG_MII, ... */
for (;;) {
WATCHDOG_RESET();
#ifdef CONFIG_SHOW_ACTIVITY
- {
- extern void show_activity(int arg);
- show_activity(1);
- }
+ show_activity(1);
#endif
/*
* Check the ethernet for a new packet. The ethernet
*/
if (ctrlc()) {
eth_halt();
- puts ("\nAbort\n");
- return (-1);
+ puts("\nAbort\n");
+ goto done;
}
ArpTimeoutCheck();
thand_f *x;
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-# if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
- defined(CONFIG_STATUS_LED) && \
- defined(STATUS_LED_RED)
+#if defined(CONFIG_SYS_FAULT_ECHO_LINK_DOWN) && \
+ defined(CONFIG_STATUS_LED) && \
+ defined(STATUS_LED_RED)
/*
* Echo the inverted link state to the fault LED.
*/
- if(miiphy_link(eth_get_dev()->name, CONFIG_SYS_FAULT_MII_ADDR)) {
- status_led_set (STATUS_LED_RED, STATUS_LED_OFF);
+ if (miiphy_link(eth_get_dev()->name,
+ CONFIG_SYS_FAULT_MII_ADDR)) {
+ status_led_set(STATUS_LED_RED, STATUS_LED_OFF);
} else {
- status_led_set (STATUS_LED_RED, STATUS_LED_ON);
+ status_led_set(STATUS_LED_RED, STATUS_LED_ON);
}
-# endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
+#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
#endif /* CONFIG_MII, ... */
x = timeHandler;
timeHandler = (thand_f *)0;
switch (NetState) {
case NETLOOP_RESTART:
-#ifdef CONFIG_NET_MULTI
NetRestarted = 1;
-#endif
goto restart;
case NETLOOP_SUCCESS:
setenv("fileaddr", buf);
}
eth_halt();
- return NetBootFileXferSize;
+ ret = NetBootFileXferSize;
+ goto done;
case NETLOOP_FAIL:
- return (-1);
+ goto done;
}
}
+
+done:
+#ifdef CONFIG_CMD_TFTPPUT
+ /* Clear out the handlers */
+ NetSetHandler(NULL);
+ net_set_icmp_handler(NULL);
+#endif
+ return ret;
}
/**********************************************************************/
}
static void
-startAgainHandler(uchar * pkt, unsigned dest, unsigned src, unsigned len)
+startAgainHandler(uchar *pkt, unsigned dest, IPaddr_t sip,
+ unsigned src, unsigned len)
{
/* Totally ignore the packet */
}
-void NetStartAgain (void)
+void NetStartAgain(void)
{
char *nretry;
- int noretry = 0, once = 0;
-
- if ((nretry = getenv ("netretry")) != NULL) {
- noretry = (strcmp (nretry, "no") == 0);
- once = (strcmp (nretry, "once") == 0);
- }
- if (noretry) {
- eth_halt ();
+ int retry_forever = 0;
+ unsigned long retrycnt = 0;
+
+ nretry = getenv("netretry");
+ if (nretry) {
+ if (!strcmp(nretry, "yes"))
+ retry_forever = 1;
+ else if (!strcmp(nretry, "no"))
+ retrycnt = 0;
+ else if (!strcmp(nretry, "once"))
+ retrycnt = 1;
+ else
+ retrycnt = simple_strtoul(nretry, NULL, 0);
+ } else
+ retry_forever = 1;
+
+ if ((!retry_forever) && (NetTryCount >= retrycnt)) {
+ eth_halt();
NetState = NETLOOP_FAIL;
return;
}
-#ifndef CONFIG_NET_MULTI
- NetSetTimeout (10000UL, startAgainTimeout);
- NetSetHandler (startAgainHandler);
-#else /* !CONFIG_NET_MULTI*/
- eth_halt ();
+
+ NetTryCount++;
+
+ eth_halt();
#if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER)
- eth_try_another (!NetRestarted);
+ eth_try_another(!NetRestarted);
#endif
- eth_init (gd->bd);
+ eth_init(gd->bd);
if (NetRestartWrap) {
NetRestartWrap = 0;
- if (NetDevExists && !once) {
- NetSetTimeout (10000UL, startAgainTimeout);
- NetSetHandler (startAgainHandler);
+ if (NetDevExists) {
+ NetSetTimeout(10000UL, startAgainTimeout);
+ NetSetHandler(startAgainHandler);
} else {
NetState = NETLOOP_FAIL;
}
} else {
NetState = NETLOOP_RESTART;
}
-#endif /* CONFIG_NET_MULTI */
}
/**********************************************************************/
* Miscelaneous bits.
*/
+rxhand_f *
+NetGetHandler(void)
+{
+ return packetHandler;
+}
+
+
void
-NetSetHandler(rxhand_f * f)
+NetSetHandler(rxhand_f *f)
{
packetHandler = f;
}
+#ifdef CONFIG_CMD_TFTPPUT
+void net_set_icmp_handler(rxhand_icmp_f *f)
+{
+ packet_icmp_handler = f;
+}
+#endif
void
-NetSetTimeout(ulong iv, thand_f * f)
+NetSetTimeout(ulong iv, thand_f *f)
{
if (iv == 0) {
timeHandler = (thand_f *)0;
void
-NetSendPacket(volatile uchar * pkt, int len)
+NetSendPacket(uchar *pkt, int len)
{
(void) eth_send(pkt, len);
}
-int
-NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len)
+int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport,
+ int payload_len)
{
uchar *pkt;
if (dest == 0xFFFFFFFF)
ether = NetBcastAddr;
- /* if MAC address was not discovered yet, save the packet and do an ARP request */
+ /*
+ * if MAC address was not discovered yet, save the packet and do
+ * an ARP request
+ */
if (memcmp(ether, NetEtherNullAddr, 6) == 0) {
-#ifdef ET_DEBUG
- printf("sending ARP for %08lx\n", dest);
-#endif
+ debug("sending ARP for %08x\n", dest);
+
NetArpWaitPacketIP = dest;
NetArpWaitPacketMAC = ether;
pkt = NetArpWaitTxPacket;
- pkt += NetSetEther (pkt, NetArpWaitPacketMAC, PROT_IP);
+ pkt += NetSetEther(pkt, NetArpWaitPacketMAC, PROT_IP);
- NetSetIP (pkt, dest, dport, sport, len);
- memcpy(pkt + IP_HDR_SIZE, (uchar *)NetTxPacket + (pkt - (uchar *)NetArpWaitTxPacket) + IP_HDR_SIZE, len);
+ NetSetIP(pkt, dest, dport, sport, payload_len);
+ memcpy(pkt + IP_UDP_HDR_SIZE, (uchar *)NetTxPacket +
+ (pkt - (uchar *)NetArpWaitTxPacket) +
+ IP_UDP_HDR_SIZE, payload_len);
/* size of the waiting packet */
- NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE + len;
+ NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) +
+ IP_UDP_HDR_SIZE + payload_len;
/* and do the ARP request */
NetArpWaitTry = 1;
return 1; /* waiting */
}
-#ifdef ET_DEBUG
- printf("sending UDP to %08lx/%pM\n", dest, ether);
-#endif
+ debug("sending UDP to %08x/%pM\n", dest, ether);
pkt = (uchar *)NetTxPacket;
- pkt += NetSetEther (pkt, ether, PROT_IP);
- NetSetIP (pkt, dest, dport, sport, len);
- (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + IP_HDR_SIZE + len);
+ pkt += NetSetEther(pkt, ether, PROT_IP);
+ NetSetIP(pkt, dest, dport, sport, payload_len);
+ eth_send(NetTxPacket, (pkt - NetTxPacket) + IP_UDP_HDR_SIZE +
+ payload_len);
return 0; /* transmitted */
}
-#if defined(CONFIG_CMD_PING)
-static ushort PingSeqNo;
-
-int PingSend(void)
-{
- static uchar mac[6];
- volatile IP_t *ip;
- volatile ushort *s;
- uchar *pkt;
-
- /* XXX always send arp request */
-
- memcpy(mac, NetEtherNullAddr, 6);
-
-#ifdef ET_DEBUG
- printf("sending ARP for %08lx\n", NetPingIP);
+#ifdef CONFIG_IP_DEFRAG
+/*
+ * This function collects fragments in a single packet, according
+ * to the algorithm in RFC815. It returns NULL or the pointer to
+ * a complete packet, in static storage
+ */
+#ifndef CONFIG_NET_MAXDEFRAG
+#define CONFIG_NET_MAXDEFRAG 16384
#endif
+/*
+ * MAXDEFRAG, above, is chosen in the config file and is real data
+ * so we need to add the NFS overhead, which is more than TFTP.
+ * To use sizeof in the internal unnamed structures, we need a real
+ * instance (can't do "sizeof(struct rpc_t.u.reply))", unfortunately).
+ * The compiler doesn't complain nor allocates the actual structure
+ */
+static struct rpc_t rpc_specimen;
+#define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply))
- NetArpWaitPacketIP = NetPingIP;
- NetArpWaitPacketMAC = mac;
-
- pkt = NetArpWaitTxPacket;
- pkt += NetSetEther(pkt, mac, PROT_IP);
+#define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE)
- ip = (volatile IP_t *)pkt;
+/*
+ * this is the packet being assembled, either data or frag control.
+ * Fragments go by 8 bytes, so this union must be 8 bytes long
+ */
+struct hole {
+ /* first_byte is address of this structure */
+ u16 last_byte; /* last byte in this hole + 1 (begin of next hole) */
+ u16 next_hole; /* index of next (in 8-b blocks), 0 == none */
+ u16 prev_hole; /* index of prev, 0 == none */
+ u16 unused;
+};
+
+static struct ip_udp_hdr *__NetDefragment(struct ip_udp_hdr *ip, int *lenp)
+{
+ static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN);
+ static u16 first_hole, total_len;
+ struct hole *payload, *thisfrag, *h, *newh;
+ struct ip_udp_hdr *localip = (struct ip_udp_hdr *)pkt_buff;
+ uchar *indata = (uchar *)ip;
+ int offset8, start, len, done = 0;
+ u16 ip_off = ntohs(ip->ip_off);
+
+ /* payload starts after IP header, this fragment is in there */
+ payload = (struct hole *)(pkt_buff + IP_HDR_SIZE);
+ offset8 = (ip_off & IP_OFFS);
+ thisfrag = payload + offset8;
+ start = offset8 * 8;
+ len = ntohs(ip->ip_len) - IP_HDR_SIZE;
+
+ if (start + len > IP_MAXUDP) /* fragment extends too far */
+ return NULL;
+
+ if (!total_len || localip->ip_id != ip->ip_id) {
+ /* new (or different) packet, reset structs */
+ total_len = 0xffff;
+ payload[0].last_byte = ~0;
+ payload[0].next_hole = 0;
+ payload[0].prev_hole = 0;
+ first_hole = 0;
+ /* any IP header will work, copy the first we received */
+ memcpy(localip, ip, IP_HDR_SIZE);
+ }
/*
- * Construct an IP and ICMP header. (need to set no fragment bit - XXX)
+ * What follows is the reassembly algorithm. We use the payload
+ * array as a linked list of hole descriptors, as each hole starts
+ * at a multiple of 8 bytes. However, last byte can be whatever value,
+ * so it is represented as byte count, not as 8-byte blocks.
*/
- ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
- ip->ip_tos = 0;
- ip->ip_len = htons(IP_HDR_SIZE_NO_UDP + 8);
- ip->ip_id = htons(NetIPID++);
- ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */
- ip->ip_ttl = 255;
- ip->ip_p = 0x01; /* ICMP */
- ip->ip_sum = 0;
- NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
- NetCopyIP((void*)&ip->ip_dst, &NetPingIP); /* - "" - */
- ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
-
- s = &ip->udp_src; /* XXX ICMP starts here */
- s[0] = htons(0x0800); /* echo-request, code */
- s[1] = 0; /* checksum */
- s[2] = 0; /* identifier */
- s[3] = htons(PingSeqNo++); /* sequence number */
- s[1] = ~NetCksum((uchar *)s, 8/2);
-
- /* size of the waiting packet */
- NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8;
-
- /* and do the ARP request */
- NetArpWaitTry = 1;
- NetArpWaitTimerStart = get_timer(0);
- ArpRequest();
- return 1; /* waiting */
-}
-
-static void
-PingTimeout (void)
-{
- eth_halt();
- NetState = NETLOOP_FAIL; /* we did not get the reply */
-}
-
-static void
-PingHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
-{
- IPaddr_t tmp;
- volatile IP_t *ip = (volatile IP_t *)pkt;
- tmp = NetReadIP((void *)&ip->ip_src);
- if (tmp != NetPingIP)
- return;
-
- NetState = NETLOOP_SUCCESS;
-}
-
-static void PingStart(void)
-{
-#if defined(CONFIG_NET_MULTI)
- printf ("Using %s device\n", eth_get_name());
-#endif /* CONFIG_NET_MULTI */
- NetSetTimeout (10000UL, PingTimeout);
- NetSetHandler (PingHandler);
-
- PingSend();
-}
-#endif
-
-#if defined(CONFIG_CMD_CDP)
-
-#define CDP_DEVICE_ID_TLV 0x0001
-#define CDP_ADDRESS_TLV 0x0002
-#define CDP_PORT_ID_TLV 0x0003
-#define CDP_CAPABILITIES_TLV 0x0004
-#define CDP_VERSION_TLV 0x0005
-#define CDP_PLATFORM_TLV 0x0006
-#define CDP_NATIVE_VLAN_TLV 0x000a
-#define CDP_APPLIANCE_VLAN_TLV 0x000e
-#define CDP_TRIGGER_TLV 0x000f
-#define CDP_POWER_CONSUMPTION_TLV 0x0010
-#define CDP_SYSNAME_TLV 0x0014
-#define CDP_SYSOBJECT_TLV 0x0015
-#define CDP_MANAGEMENT_ADDRESS_TLV 0x0016
-
-#define CDP_TIMEOUT 250UL /* one packet every 250ms */
-
-static int CDPSeq;
-static int CDPOK;
-
-ushort CDPNativeVLAN;
-ushort CDPApplianceVLAN;
-
-static const uchar CDP_SNAP_hdr[8] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, 0x0C, 0x20, 0x00 };
-
-static ushort CDP_compute_csum(const uchar *buff, ushort len)
-{
- ushort csum;
- int odd;
- ulong result = 0;
- ushort leftover;
- ushort *p;
-
- if (len > 0) {
- odd = 1 & (ulong)buff;
- if (odd) {
- result = *buff << 8;
- len--;
- buff++;
+ h = payload + first_hole;
+ while (h->last_byte < start) {
+ if (!h->next_hole) {
+ /* no hole that far away */
+ return NULL;
}
- while (len > 1) {
- p = (ushort *)buff;
- result += *p++;
- buff = (uchar *)p;
- if (result & 0x80000000)
- result = (result & 0xFFFF) + (result >> 16);
- len -= 2;
- }
- if (len) {
- leftover = (signed short)(*(const signed char *)buff);
- /* CISCO SUCKS big time! (and blows too):
- * CDP uses the IP checksum algorithm with a twist;
- * for the last byte it *sign* extends and sums.
- */
- result = (result & 0xffff0000) | ((result + leftover) & 0x0000ffff);
- }
- while (result >> 16)
- result = (result & 0xFFFF) + (result >> 16);
-
- if (odd)
- result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
+ h = payload + h->next_hole;
}
- /* add up 16-bit and 17-bit words for 17+c bits */
- result = (result & 0xffff) + (result >> 16);
- /* add up 16-bit and 2-bit for 16+c bit */
- result = (result & 0xffff) + (result >> 16);
- /* add up carry.. */
- result = (result & 0xffff) + (result >> 16);
-
- /* negate */
- csum = ~(ushort)result;
-
- /* run time endian detection */
- if (csum != htons(csum)) /* little endian */
- csum = htons(csum);
-
- return csum;
-}
-
-int CDPSendTrigger(void)
-{
- volatile uchar *pkt;
- volatile ushort *s;
- volatile ushort *cp;
- Ethernet_t *et;
- int len;
- ushort chksum;
-#if defined(CONFIG_CDP_DEVICE_ID) || defined(CONFIG_CDP_PORT_ID) || \
- defined(CONFIG_CDP_VERSION) || defined(CONFIG_CDP_PLATFORM)
- char buf[32];
-#endif
-
- pkt = NetTxPacket;
- et = (Ethernet_t *)pkt;
-
- /* NOTE: trigger sent not on any VLAN */
-
- /* form ethernet header */
- memcpy(et->et_dest, NetCDPAddr, 6);
- memcpy(et->et_src, NetOurEther, 6);
-
- pkt += ETHER_HDR_SIZE;
-
- /* SNAP header */
- memcpy((uchar *)pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr));
- pkt += sizeof(CDP_SNAP_hdr);
-
- /* CDP header */
- *pkt++ = 0x02; /* CDP version 2 */
- *pkt++ = 180; /* TTL */
- s = (volatile ushort *)pkt;
- cp = s;
- *s++ = htons(0); /* checksum (0 for later calculation) */
-
- /* CDP fields */
-#ifdef CONFIG_CDP_DEVICE_ID
- *s++ = htons(CDP_DEVICE_ID_TLV);
- *s++ = htons(CONFIG_CDP_DEVICE_ID);
- sprintf(buf, CONFIG_CDP_DEVICE_ID_PREFIX "%pm", NetOurEther);
- memcpy((uchar *)s, buf, 16);
- s += 16 / 2;
-#endif
-
-#ifdef CONFIG_CDP_PORT_ID
- *s++ = htons(CDP_PORT_ID_TLV);
- memset(buf, 0, sizeof(buf));
- sprintf(buf, CONFIG_CDP_PORT_ID, eth_get_dev_index());
- len = strlen(buf);
- if (len & 1) /* make it even */
- len++;
- *s++ = htons(len + 4);
- memcpy((uchar *)s, buf, len);
- s += len / 2;
-#endif
-
-#ifdef CONFIG_CDP_CAPABILITIES
- *s++ = htons(CDP_CAPABILITIES_TLV);
- *s++ = htons(8);
- *(ulong *)s = htonl(CONFIG_CDP_CAPABILITIES);
- s += 2;
-#endif
+ /* last fragment may be 1..7 bytes, the "+7" forces acceptance */
+ if (offset8 + ((len + 7) / 8) <= h - payload) {
+ /* no overlap with holes (dup fragment?) */
+ return NULL;
+ }
-#ifdef CONFIG_CDP_VERSION
- *s++ = htons(CDP_VERSION_TLV);
- memset(buf, 0, sizeof(buf));
- strcpy(buf, CONFIG_CDP_VERSION);
- len = strlen(buf);
- if (len & 1) /* make it even */
- len++;
- *s++ = htons(len + 4);
- memcpy((uchar *)s, buf, len);
- s += len / 2;
-#endif
+ if (!(ip_off & IP_FLAGS_MFRAG)) {
+ /* no more fragmentss: truncate this (last) hole */
+ total_len = start + len;
+ h->last_byte = start + len;
+ }
-#ifdef CONFIG_CDP_PLATFORM
- *s++ = htons(CDP_PLATFORM_TLV);
- memset(buf, 0, sizeof(buf));
- strcpy(buf, CONFIG_CDP_PLATFORM);
- len = strlen(buf);
- if (len & 1) /* make it even */
- len++;
- *s++ = htons(len + 4);
- memcpy((uchar *)s, buf, len);
- s += len / 2;
-#endif
+ /*
+ * There is some overlap: fix the hole list. This code doesn't
+ * deal with a fragment that overlaps with two different holes
+ * (thus being a superset of a previously-received fragment).
+ */
-#ifdef CONFIG_CDP_TRIGGER
- *s++ = htons(CDP_TRIGGER_TLV);
- *s++ = htons(8);
- *(ulong *)s = htonl(CONFIG_CDP_TRIGGER);
- s += 2;
-#endif
+ if ((h >= thisfrag) && (h->last_byte <= start + len)) {
+ /* complete overlap with hole: remove hole */
+ if (!h->prev_hole && !h->next_hole) {
+ /* last remaining hole */
+ done = 1;
+ } else if (!h->prev_hole) {
+ /* first hole */
+ first_hole = h->next_hole;
+ payload[h->next_hole].prev_hole = 0;
+ } else if (!h->next_hole) {
+ /* last hole */
+ payload[h->prev_hole].next_hole = 0;
+ } else {
+ /* in the middle of the list */
+ payload[h->next_hole].prev_hole = h->prev_hole;
+ payload[h->prev_hole].next_hole = h->next_hole;
+ }
-#ifdef CONFIG_CDP_POWER_CONSUMPTION
- *s++ = htons(CDP_POWER_CONSUMPTION_TLV);
- *s++ = htons(6);
- *s++ = htons(CONFIG_CDP_POWER_CONSUMPTION);
-#endif
+ } else if (h->last_byte <= start + len) {
+ /* overlaps with final part of the hole: shorten this hole */
+ h->last_byte = start;
+
+ } else if (h >= thisfrag) {
+ /* overlaps with initial part of the hole: move this hole */
+ newh = thisfrag + (len / 8);
+ *newh = *h;
+ h = newh;
+ if (h->next_hole)
+ payload[h->next_hole].prev_hole = (h - payload);
+ if (h->prev_hole)
+ payload[h->prev_hole].next_hole = (h - payload);
+ else
+ first_hole = (h - payload);
- /* length of ethernet packet */
- len = (uchar *)s - ((uchar *)NetTxPacket + ETHER_HDR_SIZE);
- et->et_protlen = htons(len);
+ } else {
+ /* fragment sits in the middle: split the hole */
+ newh = thisfrag + (len / 8);
+ *newh = *h;
+ h->last_byte = start;
+ h->next_hole = (newh - payload);
+ newh->prev_hole = (h - payload);
+ if (newh->next_hole)
+ payload[newh->next_hole].prev_hole = (newh - payload);
+ }
- len = ETHER_HDR_SIZE + sizeof(CDP_SNAP_hdr);
- chksum = CDP_compute_csum((uchar *)NetTxPacket + len, (uchar *)s - (NetTxPacket + len));
- if (chksum == 0)
- chksum = 0xFFFF;
- *cp = htons(chksum);
+ /* finally copy this fragment and possibly return whole packet */
+ memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE, len);
+ if (!done)
+ return NULL;
- (void) eth_send(NetTxPacket, (uchar *)s - NetTxPacket);
- return 0;
+ localip->ip_len = htons(total_len);
+ *lenp = total_len + IP_HDR_SIZE;
+ return localip;
}
-static void
-CDPTimeout (void)
+static inline struct ip_udp_hdr *NetDefragment(struct ip_udp_hdr *ip, int *lenp)
{
- CDPSeq++;
-
- if (CDPSeq < 3) {
- NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
- CDPSendTrigger();
- return;
- }
-
- /* if not OK try again */
- if (!CDPOK)
- NetStartAgain();
- else
- NetState = NETLOOP_SUCCESS;
+ u16 ip_off = ntohs(ip->ip_off);
+ if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
+ return ip; /* not a fragment */
+ return __NetDefragment(ip, lenp);
}
-static void
-CDPDummyHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
+#else /* !CONFIG_IP_DEFRAG */
+
+static inline struct ip_udp_hdr *NetDefragment(struct ip_udp_hdr *ip, int *lenp)
{
- /* nothing */
+ u16 ip_off = ntohs(ip->ip_off);
+ if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
+ return ip; /* not a fragment */
+ return NULL;
}
+#endif
-static void
-CDPHandler(const uchar * pkt, unsigned len)
+/**
+ * Receive an ICMP packet. We deal with REDIRECT and PING here, and silently
+ * drop others.
+ *
+ * @parma ip IP packet containing the ICMP
+ */
+static void receive_icmp(struct ip_udp_hdr *ip, int len,
+ IPaddr_t src_ip, struct ethernet_hdr *et)
{
- const uchar *t;
- const ushort *ss;
- ushort type, tlen;
- uchar applid;
- ushort vlan, nvlan;
-
- /* minimum size? */
- if (len < sizeof(CDP_SNAP_hdr) + 4)
- goto pkt_short;
-
- /* check for valid CDP SNAP header */
- if (memcmp(pkt, CDP_SNAP_hdr, sizeof(CDP_SNAP_hdr)) != 0)
- return;
-
- pkt += sizeof(CDP_SNAP_hdr);
- len -= sizeof(CDP_SNAP_hdr);
-
- /* Version of CDP protocol must be >= 2 and TTL != 0 */
- if (pkt[0] < 0x02 || pkt[1] == 0)
- return;
-
- /* if version is greater than 0x02 maybe we'll have a problem; output a warning */
- if (pkt[0] != 0x02)
- printf("** WARNING: CDP packet received with a protocol version %d > 2\n",
- pkt[0] & 0xff);
-
- if (CDP_compute_csum(pkt, len) != 0)
- return;
-
- pkt += 4;
- len -= 4;
-
- vlan = htons(-1);
- nvlan = htons(-1);
- while (len > 0) {
- if (len < 4)
- goto pkt_short;
+ struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src;
- ss = (const ushort *)pkt;
- type = ntohs(ss[0]);
- tlen = ntohs(ss[1]);
- if (tlen > len) {
- goto pkt_short;
- }
-
- pkt += tlen;
- len -= tlen;
-
- ss += 2; /* point ss to the data of the TLV */
- tlen -= 4;
-
- switch (type) {
- case CDP_DEVICE_ID_TLV:
- break;
- case CDP_ADDRESS_TLV:
- break;
- case CDP_PORT_ID_TLV:
- break;
- case CDP_CAPABILITIES_TLV:
- break;
- case CDP_VERSION_TLV:
- break;
- case CDP_PLATFORM_TLV:
- break;
- case CDP_NATIVE_VLAN_TLV:
- nvlan = *ss;
- break;
- case CDP_APPLIANCE_VLAN_TLV:
- t = (const uchar *)ss;
- while (tlen > 0) {
- if (tlen < 3)
- goto pkt_short;
-
- applid = t[0];
- ss = (const ushort *)(t + 1);
-
-#ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE
- if (applid == CONFIG_CDP_APPLIANCE_VLAN_TYPE)
- vlan = *ss;
-#else
- vlan = ntohs(*ss); /* XXX will this work; dunno */
+ switch (icmph->type) {
+ case ICMP_REDIRECT:
+ if (icmph->code != ICMP_REDIR_HOST)
+ return;
+ printf(" ICMP Host Redirect to %pI4 ",
+ &icmph->un.gateway);
+ break;
+ default:
+#if defined(CONFIG_CMD_PING)
+ ping_receive(et, ip, len);
#endif
- t += 3; tlen -= 3;
- }
- break;
- case CDP_TRIGGER_TLV:
- break;
- case CDP_POWER_CONSUMPTION_TLV:
- break;
- case CDP_SYSNAME_TLV:
- break;
- case CDP_SYSOBJECT_TLV:
- break;
- case CDP_MANAGEMENT_ADDRESS_TLV:
- break;
- }
- }
-
- CDPApplianceVLAN = vlan;
- CDPNativeVLAN = nvlan;
-
- CDPOK = 1;
- return;
-
- pkt_short:
- printf("** CDP packet is too short\n");
- return;
-}
-
-static void CDPStart(void)
-{
-#if defined(CONFIG_NET_MULTI)
- printf ("Using %s device\n", eth_get_name());
+#ifdef CONFIG_CMD_TFTPPUT
+ if (packet_icmp_handler)
+ packet_icmp_handler(icmph->type, icmph->code,
+ ntohs(ip->udp_dst), src_ip, ntohs(ip->udp_src),
+ icmph->un.data, ntohs(ip->udp_len));
#endif
- CDPSeq = 0;
- CDPOK = 0;
-
- CDPNativeVLAN = htons(-1);
- CDPApplianceVLAN = htons(-1);
-
- NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
- NetSetHandler (CDPDummyHandler);
-
- CDPSendTrigger();
+ break;
+ }
}
-#endif
-
void
-NetReceive(volatile uchar * inpkt, int len)
+NetReceive(uchar *inpkt, int len)
{
- Ethernet_t *et;
- IP_t *ip;
- ARP_t *arp;
- IPaddr_t tmp;
- int x;
- uchar *pkt;
+ struct ethernet_hdr *et;
+ struct ip_udp_hdr *ip;
+ IPaddr_t dst_ip;
+ IPaddr_t src_ip;
+ int eth_proto;
#if defined(CONFIG_CMD_CDP)
int iscdp;
#endif
ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
-#ifdef ET_DEBUG
- printf("packet received\n");
-#endif
+ debug("packet received\n");
NetRxPacket = inpkt;
NetRxPacketLen = len;
- et = (Ethernet_t *)inpkt;
+ et = (struct ethernet_hdr *)inpkt;
/* too small packet? */
if (len < ETHER_HDR_SIZE)
#if defined(CONFIG_CMD_CDP)
/* keep track if packet is CDP */
- iscdp = memcmp(et->et_dest, NetCDPAddr, 6) == 0;
+ iscdp = is_cdp_packet(et->et_dest);
#endif
myvlanid = ntohs(NetOurVLAN);
if (mynvlanid == (ushort)-1)
mynvlanid = VLAN_NONE;
- x = ntohs(et->et_protlen);
+ eth_proto = ntohs(et->et_protlen);
-#ifdef ET_DEBUG
- printf("packet received\n");
-#endif
+ debug("packet received\n");
- if (x < 1514) {
+ if (eth_proto < 1514) {
+ struct e802_hdr *et802 = (struct e802_hdr *)et;
/*
- * Got a 802 packet. Check the other protocol field.
+ * Got a 802.2 packet. Check the other protocol field.
+ * XXX VLAN over 802.2+SNAP not implemented!
*/
- x = ntohs(et->et_prot);
+ eth_proto = ntohs(et802->et_prot);
- ip = (IP_t *)(inpkt + E802_HDR_SIZE);
+ ip = (struct ip_udp_hdr *)(inpkt + E802_HDR_SIZE);
len -= E802_HDR_SIZE;
- } else if (x != PROT_VLAN) { /* normal packet */
- ip = (IP_t *)(inpkt + ETHER_HDR_SIZE);
+ } else if (eth_proto != PROT_VLAN) { /* normal packet */
+ ip = (struct ip_udp_hdr *)(inpkt + ETHER_HDR_SIZE);
len -= ETHER_HDR_SIZE;
} else { /* VLAN packet */
- VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et;
+ struct vlan_ethernet_hdr *vet =
+ (struct vlan_ethernet_hdr *)et;
+
+ debug("VLAN packet received\n");
-#ifdef ET_DEBUG
- printf("VLAN packet received\n");
-#endif
/* too small packet? */
if (len < VLAN_ETHER_HDR_SIZE)
return;
cti = ntohs(vet->vet_tag);
vlanid = cti & VLAN_IDMASK;
- x = ntohs(vet->vet_type);
+ eth_proto = ntohs(vet->vet_type);
- ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE);
+ ip = (struct ip_udp_hdr *)(inpkt + VLAN_ETHER_HDR_SIZE);
len -= VLAN_ETHER_HDR_SIZE;
}
-#ifdef ET_DEBUG
- printf("Receive from protocol 0x%x\n", x);
-#endif
+ debug("Receive from protocol 0x%x\n", eth_proto);
#if defined(CONFIG_CMD_CDP)
if (iscdp) {
return;
}
- switch (x) {
+ switch (eth_proto) {
case PROT_ARP:
- /*
- * We have to deal with two types of ARP packets:
- * - REQUEST packets will be answered by sending our
- * IP address - if we know it.
- * - REPLY packates are expected only after we asked
- * for the TFTP server's or the gateway's ethernet
- * address; so if we receive such a packet, we set
- * the server ethernet address
- */
-#ifdef ET_DEBUG
- puts ("Got ARP\n");
-#endif
- arp = (ARP_t *)ip;
- if (len < ARP_HDR_SIZE) {
- printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
- return;
- }
- if (ntohs(arp->ar_hrd) != ARP_ETHER) {
- return;
- }
- if (ntohs(arp->ar_pro) != PROT_IP) {
- return;
- }
- if (arp->ar_hln != 6) {
- return;
- }
- if (arp->ar_pln != 4) {
- return;
- }
-
- if (NetOurIP == 0) {
- return;
- }
-
- if (NetReadIP(&arp->ar_data[16]) != NetOurIP) {
- return;
- }
-
- switch (ntohs(arp->ar_op)) {
- case ARPOP_REQUEST: /* reply with our IP address */
-#ifdef ET_DEBUG
- puts ("Got ARP REQUEST, return our IP\n");
-#endif
- pkt = (uchar *)et;
- pkt += NetSetEther(pkt, et->et_src, PROT_ARP);
- arp->ar_op = htons(ARPOP_REPLY);
- memcpy (&arp->ar_data[10], &arp->ar_data[0], 6);
- NetCopyIP(&arp->ar_data[16], &arp->ar_data[6]);
- memcpy (&arp->ar_data[ 0], NetOurEther, 6);
- NetCopyIP(&arp->ar_data[ 6], &NetOurIP);
- (void) eth_send((uchar *)et, (pkt - (uchar *)et) + ARP_HDR_SIZE);
- return;
-
- case ARPOP_REPLY: /* arp reply */
- /* are we waiting for a reply */
- if (!NetArpWaitPacketIP || !NetArpWaitPacketMAC)
- break;
-#ifdef ET_DEBUG
- printf("Got ARP REPLY, set server/gtwy eth addr (%pM)\n",
- arp->ar_data);
-#endif
-
- tmp = NetReadIP(&arp->ar_data[6]);
-
- /* matched waiting packet's address */
- if (tmp == NetArpWaitReplyIP) {
-#ifdef ET_DEBUG
- puts ("Got it\n");
-#endif
- /* save address for later use */
- memcpy(NetArpWaitPacketMAC, &arp->ar_data[0], 6);
-
-#ifdef CONFIG_NETCONSOLE
- (*packetHandler)(0,0,0,0);
-#endif
- /* modify header, and transmit it */
- memcpy(((Ethernet_t *)NetArpWaitTxPacket)->et_dest, NetArpWaitPacketMAC, 6);
- (void) eth_send(NetArpWaitTxPacket, NetArpWaitTxPacketSize);
-
- /* no arp request pending now */
- NetArpWaitPacketIP = 0;
- NetArpWaitTxPacketSize = 0;
- NetArpWaitPacketMAC = NULL;
-
- }
- return;
- default:
-#ifdef ET_DEBUG
- printf("Unexpected ARP opcode 0x%x\n", ntohs(arp->ar_op));
-#endif
- return;
- }
+ ArpReceive(et, ip, len);
break;
+#ifdef CONFIG_CMD_RARP
case PROT_RARP:
-#ifdef ET_DEBUG
- puts ("Got RARP\n");
-#endif
- arp = (ARP_t *)ip;
- if (len < ARP_HDR_SIZE) {
- printf("bad length %d < %d\n", len, ARP_HDR_SIZE);
- return;
- }
-
- if ((ntohs(arp->ar_op) != RARPOP_REPLY) ||
- (ntohs(arp->ar_hrd) != ARP_ETHER) ||
- (ntohs(arp->ar_pro) != PROT_IP) ||
- (arp->ar_hln != 6) || (arp->ar_pln != 4)) {
-
- puts ("invalid RARP header\n");
- } else {
- NetCopyIP(&NetOurIP, &arp->ar_data[16]);
- if (NetServerIP == 0)
- NetCopyIP(&NetServerIP, &arp->ar_data[ 6]);
- memcpy (NetServerEther, &arp->ar_data[ 0], 6);
-
- (*packetHandler)(0,0,0,0);
- }
+ rarp_receive(ip, len);
break;
-
- case PROT_IP:
-#ifdef ET_DEBUG
- puts ("Got IP\n");
#endif
- if (len < IP_HDR_SIZE) {
- debug ("len bad %d < %lu\n", len, (ulong)IP_HDR_SIZE);
+ case PROT_IP:
+ debug("Got IP\n");
+ /* Before we start poking the header, make sure it is there */
+ if (len < IP_UDP_HDR_SIZE) {
+ debug("len bad %d < %lu\n", len,
+ (ulong)IP_UDP_HDR_SIZE);
return;
}
+ /* Check the packet length */
if (len < ntohs(ip->ip_len)) {
printf("len bad %d < %d\n", len, ntohs(ip->ip_len));
return;
}
len = ntohs(ip->ip_len);
-#ifdef ET_DEBUG
- printf("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff);
-#endif
- if ((ip->ip_hl_v & 0xf0) != 0x40) {
- return;
- }
- /* Can't deal with fragments */
- if (ip->ip_off & htons(IP_OFFS | IP_FLAGS_MFRAG)) {
+ debug("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff);
+
+ /* Can't deal with anything except IPv4 */
+ if ((ip->ip_hl_v & 0xf0) != 0x40)
return;
- }
- /* can't deal with headers > 20 bytes */
- if ((ip->ip_hl_v & 0x0f) > 0x05) {
+ /* Can't deal with IP options (headers != 20 bytes) */
+ if ((ip->ip_hl_v & 0x0f) > 0x05)
return;
- }
- if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) {
- puts ("checksum bad\n");
+ /* Check the Checksum of the header */
+ if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE / 2)) {
+ puts("checksum bad\n");
return;
}
- tmp = NetReadIP(&ip->ip_dst);
- if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) {
+ /* If it is not for us, ignore it */
+ dst_ip = NetReadIP(&ip->ip_dst);
+ if (NetOurIP && dst_ip != NetOurIP && dst_ip != 0xFFFFFFFF) {
#ifdef CONFIG_MCAST_TFTP
- if (Mcast_addr != tmp)
+ if (Mcast_addr != dst_ip)
#endif
- return;
+ return;
}
+ /* Read source IP address for later use */
+ src_ip = NetReadIP(&ip->ip_src);
+ /*
+ * The function returns the unchanged packet if it's not
+ * a fragment, and either the complete packet or NULL if
+ * it is a fragment (if !CONFIG_IP_DEFRAG, it returns NULL)
+ */
+ ip = NetDefragment(ip, &len);
+ if (!ip)
+ return;
/*
* watch for ICMP host redirects
*
* subnet. So this is probably a warning that your
* configuration might be wrong. But I'm not really
* sure if there aren't any other situations.
+ *
+ * Simon Glass <sjg@chromium.org>: We get an ICMP when
+ * we send a tftp packet to a dead connection, or when
+ * there is no server at the other end.
*/
if (ip->ip_p == IPPROTO_ICMP) {
- ICMP_t *icmph = (ICMP_t *)&(ip->udp_src);
-
- switch (icmph->type) {
- case ICMP_REDIRECT:
- if (icmph->code != ICMP_REDIR_HOST)
- return;
- printf (" ICMP Host Redirect to %pI4 ", &icmph->un.gateway);
- return;
-#if defined(CONFIG_CMD_PING)
- case ICMP_ECHO_REPLY:
- /*
- * IP header OK. Pass the packet to the current handler.
- */
- /* XXX point to ip packet */
- (*packetHandler)((uchar *)ip, 0, 0, 0);
- return;
- case ICMP_ECHO_REQUEST:
-#ifdef ET_DEBUG
- printf ("Got ICMP ECHO REQUEST, return %d bytes \n",
- ETHER_HDR_SIZE + len);
-#endif
- memcpy (&et->et_dest[0], &et->et_src[0], 6);
- memcpy (&et->et_src[ 0], NetOurEther, 6);
-
- ip->ip_sum = 0;
- ip->ip_off = 0;
- NetCopyIP((void*)&ip->ip_dst, &ip->ip_src);
- NetCopyIP((void*)&ip->ip_src, &NetOurIP);
- ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP >> 1);
-
- icmph->type = ICMP_ECHO_REPLY;
- icmph->checksum = 0;
- icmph->checksum = ~NetCksum((uchar *)icmph,
- (len - IP_HDR_SIZE_NO_UDP) >> 1);
- (void) eth_send((uchar *)et, ETHER_HDR_SIZE + len);
- return;
-#endif
- default:
- return;
- }
+ receive_icmp(ip, len, src_ip, et);
+ return;
} else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */
return;
}
xsum += sumdata;
}
while ((xsum >> 16) != 0) {
- xsum = (xsum & 0x0000ffff) + ((xsum >> 16) & 0x0000ffff);
+ xsum = (xsum & 0x0000ffff) +
+ ((xsum >> 16) & 0x0000ffff);
}
if ((xsum != 0x00000000) && (xsum != 0x0000ffff)) {
printf(" UDP wrong checksum %08lx %08x\n",
#ifdef CONFIG_NETCONSOLE
- nc_input_packet((uchar *)ip +IP_HDR_SIZE,
- ntohs(ip->udp_dst),
- ntohs(ip->udp_src),
- ntohs(ip->udp_len) - 8);
+ nc_input_packet((uchar *)ip + IP_UDP_HDR_SIZE,
+ ntohs(ip->udp_dst),
+ ntohs(ip->udp_src),
+ ntohs(ip->udp_len) - UDP_HDR_SIZE);
#endif
/*
* IP header OK. Pass the packet to the current handler.
*/
- (*packetHandler)((uchar *)ip +IP_HDR_SIZE,
- ntohs(ip->udp_dst),
- ntohs(ip->udp_src),
- ntohs(ip->udp_len) - 8);
+ (*packetHandler)((uchar *)ip + IP_UDP_HDR_SIZE,
+ ntohs(ip->udp_dst),
+ src_ip,
+ ntohs(ip->udp_src),
+ ntohs(ip->udp_len) - UDP_HDR_SIZE);
break;
}
}
/**********************************************************************/
-static int net_check_prereq (proto_t protocol)
+static int net_check_prereq(enum proto_t protocol)
{
switch (protocol) {
/* Fall through */
#if defined(CONFIG_CMD_PING)
case PING:
if (NetPingIP == 0) {
- puts ("*** ERROR: ping address not given\n");
- return (1);
+ puts("*** ERROR: ping address not given\n");
+ return 1;
}
goto common;
#endif
#if defined(CONFIG_CMD_SNTP)
case SNTP:
if (NetNtpServerIP == 0) {
- puts ("*** ERROR: NTP server address not given\n");
- return (1);
+ puts("*** ERROR: NTP server address not given\n");
+ return 1;
}
goto common;
#endif
#if defined(CONFIG_CMD_NFS)
case NFS:
#endif
- case NETCONS:
- case TFTP:
+ case TFTPGET:
+ case TFTPPUT:
if (NetServerIP == 0) {
- puts ("*** ERROR: `serverip' not set\n");
- return (1);
+ puts("*** ERROR: `serverip' not set\n");
+ return 1;
}
-#if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP)
- common:
+#if defined(CONFIG_CMD_PING) || defined(CONFIG_CMD_SNTP) || \
+ defined(CONFIG_CMD_DNS)
+common:
#endif
+ /* Fall through */
+ case NETCONS:
+ case TFTPSRV:
if (NetOurIP == 0) {
- puts ("*** ERROR: `ipaddr' not set\n");
- return (1);
+ puts("*** ERROR: `ipaddr' not set\n");
+ return 1;
}
/* Fall through */
- case DHCP:
+#ifdef CONFIG_CMD_RARP
case RARP:
+#endif
case BOOTP:
case CDP:
- if (memcmp (NetOurEther, "\0\0\0\0\0\0", 6) == 0) {
-#ifdef CONFIG_NET_MULTI
- extern int eth_get_dev_index (void);
- int num = eth_get_dev_index ();
+ case DHCP:
+ if (memcmp(NetOurEther, "\0\0\0\0\0\0", 6) == 0) {
+ int num = eth_get_dev_index();
switch (num) {
case -1:
- puts ("*** ERROR: No ethernet found.\n");
- return (1);
+ puts("*** ERROR: No ethernet found.\n");
+ return 1;
case 0:
- puts ("*** ERROR: `ethaddr' not set\n");
+ puts("*** ERROR: `ethaddr' not set\n");
break;
default:
- printf ("*** ERROR: `eth%daddr' not set\n",
+ printf("*** ERROR: `eth%daddr' not set\n",
num);
break;
}
- NetStartAgain ();
- return (2);
-#else
- puts ("*** ERROR: `ethaddr' not set\n");
- return (1);
-#endif
+ NetStartAgain();
+ return 2;
}
/* Fall through */
default:
- return (0);
+ return 0;
}
- return (0); /* OK */
+ return 0; /* OK */
}
/**********************************************************************/
int
-NetCksumOk(uchar * ptr, int len)
+NetCksumOk(uchar *ptr, int len)
{
return !((NetCksum(ptr, len) + 1) & 0xfffe);
}
unsigned
-NetCksum(uchar * ptr, int len)
+NetCksum(uchar *ptr, int len)
{
ulong xsum;
ushort *p = (ushort *)ptr;
xsum += *p++;
xsum = (xsum & 0xffff) + (xsum >> 16);
xsum = (xsum & 0xffff) + (xsum >> 16);
- return (xsum & 0xffff);
+ return xsum & 0xffff;
}
int
if (myvlanid == (ushort)-1)
myvlanid = VLAN_NONE;
- return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : VLAN_ETHER_HDR_SIZE;
+ return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE :
+ VLAN_ETHER_HDR_SIZE;
}
int
-NetSetEther(volatile uchar * xet, uchar * addr, uint prot)
+NetSetEther(uchar *xet, uchar * addr, uint prot)
{
- Ethernet_t *et = (Ethernet_t *)xet;
+ struct ethernet_hdr *et = (struct ethernet_hdr *)xet;
ushort myvlanid;
myvlanid = ntohs(NetOurVLAN);
if (myvlanid == (ushort)-1)
myvlanid = VLAN_NONE;
- memcpy (et->et_dest, addr, 6);
- memcpy (et->et_src, NetOurEther, 6);
+ memcpy(et->et_dest, addr, 6);
+ memcpy(et->et_src, NetOurEther, 6);
if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) {
- et->et_protlen = htons(prot);
+ et->et_protlen = htons(prot);
return ETHER_HDR_SIZE;
} else {
- VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet;
+ struct vlan_ethernet_hdr *vet =
+ (struct vlan_ethernet_hdr *)xet;
vet->vet_vlan_type = htons(PROT_VLAN);
vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK));
}
}
-void
-NetSetIP(volatile uchar * xip, IPaddr_t dest, int dport, int sport, int len)
+void NetSetIP(uchar *xip, IPaddr_t dest, int dport, int sport, int len)
{
- IP_t *ip = (IP_t *)xip;
+ struct ip_udp_hdr *ip = (struct ip_udp_hdr *)xip;
/*
* If the data is an odd number of bytes, zero the
* will work.
*/
if (len & 1)
- xip[IP_HDR_SIZE + len] = 0;
+ xip[IP_UDP_HDR_SIZE + len] = 0;
/*
* Construct an IP and UDP header.
* (need to set no fragment bit - XXX)
*/
- ip->ip_hl_v = 0x45; /* IP_HDR_SIZE / 4 (not including UDP) */
+ /* IP_HDR_SIZE / 4 (not including UDP) */
+ ip->ip_hl_v = 0x45;
ip->ip_tos = 0;
- ip->ip_len = htons(IP_HDR_SIZE + len);
+ ip->ip_len = htons(IP_UDP_HDR_SIZE + len);
ip->ip_id = htons(NetIPID++);
ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */
ip->ip_ttl = 255;
ip->ip_p = 17; /* UDP */
ip->ip_sum = 0;
- NetCopyIP((void*)&ip->ip_src, &NetOurIP); /* already in network byte order */
- NetCopyIP((void*)&ip->ip_dst, &dest); /* - "" - */
+ /* already in network byte order */
+ NetCopyIP((void *)&ip->ip_src, &NetOurIP);
+ /* - "" - */
+ NetCopyIP((void *)&ip->ip_dst, &dest);
ip->udp_src = htons(sport);
ip->udp_dst = htons(dport);
- ip->udp_len = htons(8 + len);
+ ip->udp_len = htons(UDP_HDR_SIZE + len);
ip->udp_xsum = 0;
- ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2);
+ ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE / 2);
}
-void copy_filename (char *dst, char *src, int size)
+void copy_filename(char *dst, const char *src, int size)
{
if (*src && (*src == '"')) {
++src;
--size;
}
- while ((--size > 0) && *src && (*src != '"')) {
+ while ((--size > 0) && *src && (*src != '"'))
*dst++ = *src++;
- }
*dst = '\0';
}
-#endif
-
-#if defined(CONFIG_CMD_NFS) || defined(CONFIG_CMD_SNTP) || defined(CONFIG_CMD_DNS)
+#if defined(CONFIG_CMD_NFS) || \
+ defined(CONFIG_CMD_SNTP) || \
+ defined(CONFIG_CMD_DNS)
/*
- * make port a little random, but use something trivial to compute
+ * make port a little random (1024-17407)
+ * This keeps the math somewhat trivial to compute, and seems to work with
+ * all supported protocols/clients/servers
*/
unsigned int random_port(void)
{
- return 1024 + (get_timer(0) % 0x8000);;
+ return 1024 + (get_timer(0) % 0x4000);
}
#endif
-void ip_to_string (IPaddr_t x, char *s)
+void ip_to_string(IPaddr_t x, char *s)
{
- x = ntohl (x);
- sprintf (s, "%d.%d.%d.%d",
- (int) ((x >> 24) & 0xff),
- (int) ((x >> 16) & 0xff),
- (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff)
+ x = ntohl(x);
+ sprintf(s, "%d.%d.%d.%d",
+ (int) ((x >> 24) & 0xff),
+ (int) ((x >> 16) & 0xff),
+ (int) ((x >> 8) & 0xff), (int) ((x >> 0) & 0xff)
);
}
-IPaddr_t string_to_ip(char *s)
-{
- IPaddr_t addr;
- char *e;
- int i;
-
- if (s == NULL)
- return(0);
-
- for (addr=0, i=0; i<4; ++i) {
- ulong val = s ? simple_strtoul(s, &e, 10) : 0;
- addr <<= 8;
- addr |= (val & 0xFF);
- if (s) {
- s = (*e) ? e+1 : e;
- }
- }
-
- return (htonl(addr));
-}
-
void VLAN_to_string(ushort x, char *s)
{
x = ntohs(x);
sprintf(s, "%d", x & VLAN_IDMASK);
}
-ushort string_to_VLAN(char *s)
+ushort string_to_VLAN(const char *s)
{
ushort id;
return htons(id);
}
-IPaddr_t getenv_IPaddr (char *var)
-{
- return (string_to_ip(getenv(var)));
-}
-
ushort getenv_VLAN(char *var)
{
- return (string_to_VLAN(getenv(var)));
+ return string_to_VLAN(getenv(var));
}