* - name of bootfile
* Next step: ARP
*
+ * LINK_LOCAL:
+ *
+ * Prerequisites: - own ethernet address
+ * We want: - own IP address
+ * Next step: ARP
+ *
* RARP:
*
* Prerequisites: - own ethernet address
#include <common.h>
-#include <watchdog.h>
#include <command.h>
+#include <environment.h>
#include <net.h>
+#if defined(CONFIG_STATUS_LED)
+#include <miiphy.h>
+#include <status_led.h>
+#endif
+#include <watchdog.h>
+#include <linux/compiler.h>
+#include "arp.h"
#include "bootp.h"
-#include "tftp.h"
-#ifdef CONFIG_CMD_RARP
-#include "rarp.h"
+#include "cdp.h"
+#if defined(CONFIG_CMD_DNS)
+#include "dns.h"
#endif
+#include "link_local.h"
#include "nfs.h"
-#ifdef CONFIG_STATUS_LED
-#include <status_led.h>
-#include <miiphy.h>
-#endif
+#include "ping.h"
+#include "rarp.h"
#if defined(CONFIG_CMD_SNTP)
#include "sntp.h"
#endif
-#if defined(CONFIG_CDP_VERSION)
-#include <timestamp.h>
-#endif
-#if defined(CONFIG_CMD_DNS)
-#include "dns.h"
-#endif
+#include "tftp.h"
DECLARE_GLOBAL_DATA_PTR;
-#ifndef CONFIG_ARP_TIMEOUT
-/* Milliseconds before trying ARP again */
-# define ARP_TIMEOUT 5000UL
-#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
-
/** BOOTP EXTENTIONS **/
/* Our subnet mask (0=unknown) */
/* Server IP addr (0 = unknown) */
IPaddr_t NetServerIP;
/* Current receive packet */
-volatile uchar *NetRxPacket;
+uchar *NetRxPacket;
/* Current rx packet length */
int NetRxPacketLen;
/* IP packet ID */
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)
-/* Ethernet bcast address */
-uchar NetCDPAddr[6] = { 0x01, 0x00, 0x0c, 0xcc, 0xcc, 0xcc };
+void (*push_packet)(void *, int len) = 0;
#endif
/* Network loop state */
-int NetState;
+enum net_loop_state net_state;
/* Tried all network devices */
int NetRestartWrap;
/* Network loop restarted */
/* Boot File name */
char BootFile[128];
-#if defined(CONFIG_CMD_PING)
-/* the ip address to ping */
-IPaddr_t NetPingIP;
-
-static void PingStart(void);
-#endif
-
-#if defined(CONFIG_CMD_CDP)
-static void CDPStart(void);
-#endif
-
#if defined(CONFIG_CMD_SNTP)
/* NTP server IP address */
IPaddr_t NetNtpServerIP;
int NetTimeOffset;
#endif
-#ifdef CONFIG_NETCONSOLE
-void NcStart(void);
-int nc_input_packet(uchar *pkt, unsigned dest, unsigned src, unsigned len);
-#endif
-
-volatile uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
+static uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
/* Receive packet */
-volatile uchar *NetRxPackets[PKTBUFSRX];
+uchar *NetRxPackets[PKTBUFSRX];
-/* Current RX packet handler */
-static rxhand_f *packetHandler;
+/* Current UDP RX packet handler */
+static rxhand_f *udp_packet_handler;
+/* Current ARP RX packet handler */
+static rxhand_f *arp_packet_handler;
#ifdef CONFIG_CMD_TFTPPUT
-static rxhand_icmp_f *packet_icmp_handler; /* Current ICMP rx handler */
+/* Current ICMP rx handler */
+static rxhand_icmp_f *packet_icmp_handler;
#endif
/* Current timeout handler */
static thand_f *timeHandler;
/* Current timeout value */
static ulong timeDelta;
/* THE transmit packet */
-volatile uchar *NetTxPacket;
+uchar *NetTxPacket;
static int net_check_prereq(enum proto_t protocol);
/**********************************************************************/
-IPaddr_t NetArpWaitPacketIP;
-IPaddr_t NetArpWaitReplyIP;
-/* MAC address of waiting packet's destination */
-uchar *NetArpWaitPacketMAC;
-/* THE transmit packet */
-uchar *NetArpWaitTxPacket;
-int NetArpWaitTxPacketSize;
-uchar NetArpWaitPacketBuf[PKTSIZE_ALIGN + PKTALIGN];
-ulong NetArpWaitTimerStart;
-int NetArpWaitTry;
-
-void ArpRequest(void)
+static int on_bootfile(const char *name, const char *value, enum env_op op,
+ int flags)
{
- volatile uchar *pkt;
- ARP_t *arp;
-
- debug("ARP broadcast %d\n", NetArpWaitTry);
-
- 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);
-
- /* source ET addr */
- memcpy(&arp->ar_data[0], NetOurEther, 6);
- /* source IP addr */
- NetWriteIP((uchar *) &arp->ar_data[6], NetOurIP);
- /* dest ET addr = 0 */
- memset(&arp->ar_data[10], '\0', 6);
- if ((NetArpWaitPacketIP & NetOurSubnetMask) !=
- (NetOurIP & NetOurSubnetMask)) {
- if (NetOurGatewayIP == 0) {
- puts("## Warning: gatewayip needed but not set\n");
- NetArpWaitReplyIP = NetArpWaitPacketIP;
- } else {
- NetArpWaitReplyIP = NetOurGatewayIP;
- }
- } else {
- NetArpWaitReplyIP = NetArpWaitPacketIP;
+ switch (op) {
+ case env_op_create:
+ case env_op_overwrite:
+ copy_filename(BootFile, value, sizeof(BootFile));
+ break;
+ default:
+ break;
}
- 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();
- }
- }
+ return 0;
}
+U_BOOT_ENV_CALLBACK(bootfile, on_bootfile);
/*
* Check if autoload is enabled. If so, use either NFS or TFTP to download
*/
void net_auto_load(void)
{
+#if defined(CONFIG_CMD_NFS)
const char *s = getenv("autoload");
- 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;
- }
-#if defined(CONFIG_CMD_NFS)
- if (strcmp(s, "NFS") == 0) {
- /*
- * Use NFS to load the bootfile.
- */
- NfsStart();
- return;
- }
+ if (s != NULL && strcmp(s, "NFS") == 0) {
+ /*
+ * Use NFS to load the bootfile.
+ */
+ NfsStart();
+ return;
+ }
#endif
+ if (getenv_yesno("autoload") == 0) {
+ /*
+ * Just use BOOTP/RARP to configure system;
+ * Do not use TFTP to load the bootfile.
+ */
+ net_set_state(NETLOOP_SUCCESS);
+ return;
}
TftpStart(TFTPGET);
}
-static void NetInitLoop(enum proto_t protocol)
+static void NetInitLoop(void)
{
static int env_changed_id;
- bd_t *bd = gd->bd;
int env_id = get_env_id();
/* update only when the environment has changed */
if (env_changed_id != env_id) {
NetOurIP = getenv_IPaddr("ipaddr");
- NetCopyIP(&bd->bi_ip_addr, &NetOurIP);
NetOurGatewayIP = getenv_IPaddr("gatewayip");
NetOurSubnetMask = getenv_IPaddr("netmask");
NetServerIP = getenv_IPaddr("serverip");
#endif
env_changed_id = env_id;
}
+ memcpy(NetOurEther, eth_get_dev()->enetaddr, 6);
return;
}
+static void net_clear_handlers(void)
+{
+ net_set_udp_handler(NULL);
+ net_set_arp_handler(NULL);
+ NetSetTimeout(0, NULL);
+}
+
+static void net_cleanup_loop(void)
+{
+ net_clear_handlers();
+}
+
+void net_init(void)
+{
+ static int first_call = 1;
+
+ if (first_call) {
+ /*
+ * Setup packet buffers, aligned correctly.
+ */
+ int i;
+
+ NetTxPacket = &PktBuf[0] + (PKTALIGN - 1);
+ NetTxPacket -= (ulong)NetTxPacket % PKTALIGN;
+ for (i = 0; i < PKTBUFSRX; i++)
+ NetRxPackets[i] = NetTxPacket + (i + 1) * PKTSIZE_ALIGN;
+
+ ArpInit();
+ net_clear_handlers();
+
+ /* Only need to setup buffer pointers once. */
+ first_call = 0;
+ }
+
+ NetInitLoop();
+}
+
/**********************************************************************/
/*
* Main network processing loop.
NetRestarted = 0;
NetDevExists = 0;
-
- /* XXX problem with bss workaround */
- NetArpWaitPacketMAC = NULL;
- NetArpWaitTxPacket = NULL;
- NetArpWaitPacketIP = 0;
- NetArpWaitReplyIP = 0;
- NetArpWaitTxPacket = NULL;
- NetTxPacket = NULL;
NetTryCount = 1;
-
- if (!NetTxPacket) {
- int i;
- /*
- * Setup packet buffers, aligned correctly.
- */
- NetTxPacket = &PktBuf[0] + (PKTALIGN - 1);
- NetTxPacket -= (ulong)NetTxPacket % PKTALIGN;
- 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;
- }
+ debug_cond(DEBUG_INT_STATE, "--- NetLoop Entry\n");
bootstage_mark_name(BOOTSTAGE_ID_ETH_START, "eth_start");
- eth_halt();
- eth_set_current();
- if (eth_init(bd) < 0) {
+ net_init();
+ if (eth_is_on_demand_init() || protocol != NETCONS) {
eth_halt();
- return -1;
- }
+ eth_set_current();
+ if (eth_init(bd) < 0) {
+ eth_halt();
+ return -1;
+ }
+ } else
+ eth_init_state_only(bd);
restart:
- memcpy(NetOurEther, eth_get_dev()->enetaddr, 6);
-
- NetState = NETLOOP_CONTINUE;
+ net_set_state(NETLOOP_CONTINUE);
/*
* Start the ball rolling with the given start function. From
* here on, this code is a state machine driven by received
* packets and timer events.
*/
- NetInitLoop(protocol);
+ debug_cond(DEBUG_INT_STATE, "--- NetLoop Init\n");
+ NetInitLoop();
switch (net_check_prereq(protocol)) {
case 1:
#endif
#if defined(CONFIG_CMD_PING)
case PING:
- PingStart();
+ ping_start();
break;
#endif
#if defined(CONFIG_CMD_NFS)
case DNS:
DnsStart();
break;
+#endif
+#if defined(CONFIG_CMD_LINK_LOCAL)
+ case LINKLOCAL:
+ link_local_start();
+ break;
+#endif
+#if defined(CONFIG_CMD_BOOTCE)
+ case BOOTME:
+ BootmeStart();
+ break;
#endif
default:
break;
/*
* Main packet reception loop. Loop receiving packets until
- * someone sets `NetState' to a state that terminates.
+ * someone sets `net_state' to a state that terminates.
*/
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
* Abort if ctrl-c was pressed.
*/
if (ctrlc()) {
+ /* cancel any ARP that may not have completed */
+ NetArpWaitPacketIP = 0;
+
+ net_cleanup_loop();
eth_halt();
+ /* Invalidate the last protocol */
+ eth_set_last_protocol(BOOTP);
+
puts("\nAbort\n");
+ /* include a debug print as well incase the debug
+ messages are directed to stderr */
+ debug_cond(DEBUG_INT_STATE, "--- NetLoop Abort!\n");
goto done;
}
* Check for a timeout, and run the timeout handler
* if we have one.
*/
- if (timeHandler && ((get_timer(0) - timeStart) > timeDelta)) {
+ if (timeHandler && ((get_timer(timeStart)) > timeDelta)) {
thand_f *x;
#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
}
#endif /* CONFIG_SYS_FAULT_ECHO_LINK_DOWN, ... */
#endif /* CONFIG_MII, ... */
+ debug_cond(DEBUG_INT_STATE, "--- NetLoop timeout\n");
x = timeHandler;
timeHandler = (thand_f *)0;
(*x)();
}
- switch (NetState) {
+ switch (net_state) {
case NETLOOP_RESTART:
NetRestarted = 1;
goto restart;
case NETLOOP_SUCCESS:
+ net_cleanup_loop();
if (NetBootFileXferSize > 0) {
char buf[20];
printf("Bytes transferred = %ld (%lx hex)\n",
sprintf(buf, "%lX", (unsigned long)load_addr);
setenv("fileaddr", buf);
}
- eth_halt();
+ if (protocol != NETCONS) {
+ eth_halt();
+ } else {
+ eth_halt_state_only();
+ }
+
+ eth_set_last_protocol(protocol);
+
ret = NetBootFileXferSize;
+ debug_cond(DEBUG_INT_STATE, "--- NetLoop Success!\n");
goto done;
case NETLOOP_FAIL:
+ net_cleanup_loop();
+ /* Invalidate the last protocol */
+ eth_set_last_protocol(BOOTP);
+ debug_cond(DEBUG_INT_STATE, "--- NetLoop Fail!\n");
goto done;
+
+ case NETLOOP_CONTINUE:
+ continue;
}
}
done:
#ifdef CONFIG_CMD_TFTPPUT
/* Clear out the handlers */
- NetSetHandler(NULL);
+ net_set_udp_handler(NULL);
net_set_icmp_handler(NULL);
#endif
return ret;
static void
startAgainTimeout(void)
{
- NetState = NETLOOP_RESTART;
-}
-
-static void
-startAgainHandler(uchar *pkt, unsigned dest, IPaddr_t sip,
- unsigned src, unsigned len)
-{
- /* Totally ignore the packet */
+ net_set_state(NETLOOP_RESTART);
}
void NetStartAgain(void)
if ((!retry_forever) && (NetTryCount >= retrycnt)) {
eth_halt();
- NetState = NETLOOP_FAIL;
+ net_set_state(NETLOOP_FAIL);
return;
}
NetRestartWrap = 0;
if (NetDevExists) {
NetSetTimeout(10000UL, startAgainTimeout);
- NetSetHandler(startAgainHandler);
+ net_set_udp_handler(NULL);
} else {
- NetState = NETLOOP_FAIL;
+ net_set_state(NETLOOP_FAIL);
}
} else {
- NetState = NETLOOP_RESTART;
+ net_set_state(NETLOOP_RESTART);
}
}
* Miscelaneous bits.
*/
-void
-NetSetHandler(rxhand_f *f)
+static void dummy_handler(uchar *pkt, unsigned dport,
+ IPaddr_t sip, unsigned sport,
+ unsigned len)
+{
+}
+
+rxhand_f *net_get_udp_handler(void)
+{
+ return udp_packet_handler;
+}
+
+void net_set_udp_handler(rxhand_f *f)
+{
+ debug_cond(DEBUG_INT_STATE, "--- NetLoop UDP handler set (%p)\n", f);
+ if (f == NULL)
+ udp_packet_handler = dummy_handler;
+ else
+ udp_packet_handler = f;
+}
+
+rxhand_f *net_get_arp_handler(void)
+{
+ return arp_packet_handler;
+}
+
+void net_set_arp_handler(rxhand_f *f)
{
- packetHandler = f;
+ debug_cond(DEBUG_INT_STATE, "--- NetLoop ARP handler set (%p)\n", f);
+ if (f == NULL)
+ arp_packet_handler = dummy_handler;
+ else
+ arp_packet_handler = f;
}
#ifdef CONFIG_CMD_TFTPPUT
NetSetTimeout(ulong iv, thand_f *f)
{
if (iv == 0) {
+ debug_cond(DEBUG_INT_STATE,
+ "--- NetLoop timeout handler cancelled\n");
timeHandler = (thand_f *)0;
} else {
+ debug_cond(DEBUG_INT_STATE,
+ "--- NetLoop timeout handler set (%p)\n", f);
timeHandler = f;
timeStart = get_timer(0);
- timeDelta = iv;
+ timeDelta = iv * CONFIG_SYS_HZ / 1000;
}
}
-
-void
-NetSendPacket(volatile 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;
+ int eth_hdr_size;
+ int pkt_hdr_size;
+
+ /* make sure the NetTxPacket is initialized (NetInit() was called) */
+ assert(NetTxPacket != NULL);
+ if (NetTxPacket == NULL)
+ return -1;
/* convert to new style broadcast */
if (dest == 0)
if (dest == 0xFFFFFFFF)
ether = NetBcastAddr;
- /*
- * if MAC address was not discovered yet, save the packet and do
- * an ARP request
- */
- if (memcmp(ether, NetEtherNullAddr, 6) == 0) {
+ pkt = (uchar *)NetTxPacket;
+
+ eth_hdr_size = NetSetEther(pkt, ether, PROT_IP);
+ pkt += eth_hdr_size;
+ net_set_udp_header(pkt, dest, dport, sport, payload_len);
+ pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE;
- debug("sending ARP for %08x\n", dest);
+ /* if MAC address was not discovered yet, do an ARP request */
+ if (memcmp(ether, NetEtherNullAddr, 6) == 0) {
+ debug_cond(DEBUG_DEV_PKT, "sending ARP for %pI4\n", &dest);
+ /* save the ip and eth addr for the packet to send after arp */
NetArpWaitPacketIP = dest;
NetArpWaitPacketMAC = ether;
- pkt = NetArpWaitTxPacket;
- 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);
-
/* size of the waiting packet */
- NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) +
- IP_HDR_SIZE + len;
+ NetArpWaitTxPacketSize = pkt_hdr_size + payload_len;
/* and do the ARP request */
NetArpWaitTry = 1;
NetArpWaitTimerStart = get_timer(0);
ArpRequest();
return 1; /* waiting */
+ } else {
+ debug_cond(DEBUG_DEV_PKT, "sending UDP to %pI4/%pM\n",
+ &dest, ether);
+ NetSendPacket(NetTxPacket, pkt_hdr_size + payload_len);
+ return 0; /* transmitted */
}
-
- 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);
-
- 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);
-
- debug("sending ARP for %08x\n", NetPingIP);
-
- NetArpWaitPacketIP = NetPingIP;
- NetArpWaitPacketMAC = mac;
-
- pkt = NetArpWaitTxPacket;
- pkt += NetSetEther(pkt, mac, PROT_IP);
-
- ip = (volatile IP_t *)pkt;
-
- /*
- * Construct an IP and ICMP header.
- * (need to set no fragment bit - XXX)
- */
- /* IP_HDR_SIZE / 4 (not including UDP) */
- ip->ip_hl_v = 0x45;
- 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;
- /* already in network byte order */
- NetCopyIP((void *)&ip->ip_src, &NetOurIP);
- /* - "" - */
- 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, IPaddr_t sip, unsigned src,
- unsigned len)
-{
- if (sip != NetPingIP)
- return;
-
- NetState = NETLOOP_SUCCESS;
-}
-
-static void PingStart(void)
-{
- printf("Using %s device\n", eth_get_name());
- 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++;
- }
- 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);
- }
-
- /* 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;
- /* checksum (0 for later calculation) */
- *s++ = htons(0);
-
- /* 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
-
-#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
-
-#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
-
-#ifdef CONFIG_CDP_TRIGGER
- *s++ = htons(CDP_TRIGGER_TLV);
- *s++ = htons(8);
- *(ulong *)s = htonl(CONFIG_CDP_TRIGGER);
- s += 2;
-#endif
-
-#ifdef CONFIG_CDP_POWER_CONSUMPTION
- *s++ = htons(CDP_POWER_CONSUMPTION_TLV);
- *s++ = htons(6);
- *s++ = htons(CONFIG_CDP_POWER_CONSUMPTION);
-#endif
-
- /* length of ethernet packet */
- len = (uchar *)s - ((uchar *)NetTxPacket + ETHER_HDR_SIZE);
- et->et_protlen = htons(len);
-
- 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);
-
- (void) eth_send(NetTxPacket, (uchar *)s - NetTxPacket);
- return 0;
-}
-
-static void
-CDPTimeout(void)
-{
- CDPSeq++;
-
- if (CDPSeq < 3) {
- NetSetTimeout(CDP_TIMEOUT, CDPTimeout);
- CDPSendTrigger();
- return;
- }
-
- /* if not OK try again */
- if (!CDPOK)
- NetStartAgain();
- else
- NetState = NETLOOP_SUCCESS;
-}
-
-static void
-CDPDummyHandler(uchar *pkt, unsigned dest, IPaddr_t sip, unsigned src,
- unsigned len)
-{
- /* nothing */
-}
-
-static void
-CDPHandler(const uchar *pkt, unsigned len)
-{
- const uchar *t;
- const ushort *ss;
- ushort type, tlen;
- 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;
-
- 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;
-
- ss = (const ushort *)(t + 1);
-
-#ifdef CONFIG_CDP_APPLIANCE_VLAN_TYPE
- if (t[0] == CONFIG_CDP_APPLIANCE_VLAN_TYPE)
- vlan = *ss;
-#else
- /* XXX will this work; dunno */
- vlan = ntohs(*ss);
-#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)
-{
- printf("Using %s device\n", eth_get_name());
- CDPSeq = 0;
- CDPOK = 0;
-
- CDPNativeVLAN = htons(-1);
- CDPApplianceVLAN = htons(-1);
-
- NetSetTimeout(CDP_TIMEOUT, CDPTimeout);
- NetSetHandler(CDPDummyHandler);
-
- CDPSendTrigger();
}
-#endif
#ifdef CONFIG_IP_DEFRAG
/*
static struct rpc_t rpc_specimen;
#define IP_PKTSIZE (CONFIG_NET_MAXDEFRAG + sizeof(rpc_specimen.u.reply))
-#define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE_NO_UDP)
+#define IP_MAXUDP (IP_PKTSIZE - IP_HDR_SIZE)
/*
* this is the packet being assembled, either data or frag control.
u16 unused;
};
-static IP_t *__NetDefragment(IP_t *ip, int *lenp)
+static struct ip_udp_hdr *__NetDefragment(struct ip_udp_hdr *ip, int *lenp)
{
- static uchar pkt_buff[IP_PKTSIZE] __attribute__((aligned(PKTALIGN)));
+ static uchar pkt_buff[IP_PKTSIZE] __aligned(PKTALIGN);
static u16 first_hole, total_len;
struct hole *payload, *thisfrag, *h, *newh;
- IP_t *localip = (IP_t *)pkt_buff;
+ 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_NO_UDP);
+ 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_NO_UDP;
+ len = ntohs(ip->ip_len) - IP_HDR_SIZE;
if (start + len > IP_MAXUDP) /* fragment extends too far */
return NULL;
payload[0].prev_hole = 0;
first_hole = 0;
/* any IP header will work, copy the first we received */
- memcpy(localip, ip, IP_HDR_SIZE_NO_UDP);
+ memcpy(localip, ip, IP_HDR_SIZE);
}
/*
}
/* finally copy this fragment and possibly return whole packet */
- memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE_NO_UDP, len);
+ memcpy((uchar *)thisfrag, indata + IP_HDR_SIZE, len);
if (!done)
return NULL;
localip->ip_len = htons(total_len);
- *lenp = total_len + IP_HDR_SIZE_NO_UDP;
+ *lenp = total_len + IP_HDR_SIZE;
return localip;
}
-static inline IP_t *NetDefragment(IP_t *ip, int *lenp)
+static inline struct ip_udp_hdr *NetDefragment(struct ip_udp_hdr *ip, int *lenp)
{
u16 ip_off = ntohs(ip->ip_off);
if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
#else /* !CONFIG_IP_DEFRAG */
-static inline IP_t *NetDefragment(IP_t *ip, int *lenp)
+static inline struct ip_udp_hdr *NetDefragment(struct ip_udp_hdr *ip, int *lenp)
{
u16 ip_off = ntohs(ip->ip_off);
if (!(ip_off & (IP_OFFS | IP_FLAGS_MFRAG)))
*
* @parma ip IP packet containing the ICMP
*/
-static void receive_icmp(IP_t *ip, int len, IPaddr_t src_ip, Ethernet_t *et)
+static void receive_icmp(struct ip_udp_hdr *ip, int len,
+ IPaddr_t src_ip, struct ethernet_hdr *et)
{
- ICMP_t *icmph = (ICMP_t *)&ip->udp_src;
+ struct icmp_hdr *icmph = (struct icmp_hdr *)&ip->udp_src;
switch (icmph->type) {
case ICMP_REDIRECT:
printf(" ICMP Host Redirect to %pI4 ",
&icmph->un.gateway);
break;
+ default:
#if defined(CONFIG_CMD_PING)
- case ICMP_ECHO_REPLY:
- /*
- * IP header OK. Pass the packet to the
- * current handler.
- */
- /*
- * XXX point to ip packet - should this use
- * packet_icmp_handler?
- */
- (*packetHandler)((uchar *)ip, 0, src_ip, 0, 0);
- break;
- case ICMP_ECHO_REQUEST:
- debug("Got ICMP ECHO REQUEST, return %d bytes\n",
- ETHER_HDR_SIZE + len);
-
- 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);
- break;
+ ping_receive(et, ip, len);
#endif
- default:
#ifdef CONFIG_CMD_TFTPPUT
if (packet_icmp_handler)
packet_icmp_handler(icmph->type, icmph->code,
}
void
-NetReceive(volatile uchar *inpkt, int len)
+NetReceive(uchar *inpkt, int len)
{
- Ethernet_t *et;
- IP_t *ip;
- ARP_t *arp;
- IPaddr_t tmp;
+ struct ethernet_hdr *et;
+ struct ip_udp_hdr *ip;
+ IPaddr_t dst_ip;
IPaddr_t src_ip;
- int x;
- uchar *pkt;
+ int eth_proto;
#if defined(CONFIG_CMD_CDP)
int iscdp;
#endif
ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
- debug("packet received\n");
+ debug_cond(DEBUG_NET_PKT, "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);
- 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");
+ debug_cond(DEBUG_NET_PKT, "VLAN packet received\n");
/* too small packet? */
if (len < VLAN_ETHER_HDR_SIZE)
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;
}
- debug("Receive from protocol 0x%x\n", x);
+ debug_cond(DEBUG_NET_PKT, "Receive from protocol 0x%x\n", eth_proto);
#if defined(CONFIG_CMD_CDP)
if (iscdp) {
- CDPHandler((uchar *)ip, len);
+ cdp_receive((uchar *)ip, len);
return;
}
#endif
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
- */
- debug("Got ARP\n");
-
- 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 */
- debug("Got ARP REQUEST, return our IP\n");
- 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 CONFIG_KEEP_SERVERADDR
- if (NetServerIP == NetArpWaitPacketIP) {
- char buf[20];
- sprintf(buf, "%pM", arp->ar_data);
- setenv("serveraddr", buf);
- }
-#endif
-
- debug("Got ARP REPLY, set server/gtwy eth addr (%pM)\n",
- arp->ar_data);
-
- tmp = NetReadIP(&arp->ar_data[6]);
-
- /* matched waiting packet's address */
- if (tmp == NetArpWaitReplyIP) {
- debug("Got it\n");
- /* save address for later use */
- memcpy(NetArpWaitPacketMAC,
- &arp->ar_data[0], 6);
-
-#ifdef CONFIG_NETCONSOLE
- (*packetHandler)(0, 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:
- debug("Unexpected ARP opcode 0x%x\n",
- ntohs(arp->ar_op));
- return;
- }
+ ArpReceive(et, ip, len);
break;
#ifdef CONFIG_CMD_RARP
case PROT_RARP:
- debug("Got RARP\n");
- 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, 0);
- }
+ rarp_receive(ip, len);
break;
#endif
case PROT_IP:
- debug("Got IP\n");
+ debug_cond(DEBUG_NET_PKT, "Got IP\n");
/* Before we start poking the header, make sure it is there */
- if (len < IP_HDR_SIZE) {
- debug("len bad %d < %lu\n", len, (ulong)IP_HDR_SIZE);
+ 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));
+ debug("len bad %d < %d\n", len, ntohs(ip->ip_len));
return;
}
len = ntohs(ip->ip_len);
- debug("len=%d, v=%02x\n", len, ip->ip_hl_v & 0xff);
+ debug_cond(DEBUG_NET_PKT, "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)
if ((ip->ip_hl_v & 0x0f) > 0x05)
return;
/* Check the Checksum of the header */
- if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE_NO_UDP / 2)) {
- puts("checksum bad\n");
+ if (!NetCksumOk((uchar *)ip, IP_HDR_SIZE / 2)) {
+ debug("checksum bad\n");
return;
}
/* If it is not for us, ignore it */
- tmp = NetReadIP(&ip->ip_dst);
- if (NetOurIP && tmp != NetOurIP && tmp != 0xFFFFFFFF) {
+ 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;
}
+ debug_cond(DEBUG_DEV_PKT,
+ "received UDP (to=%pI4, from=%pI4, len=%d)\n",
+ &dst_ip, &src_ip, len);
+
#ifdef CONFIG_UDP_CHECKSUM
if (ip->udp_xsum != 0) {
ulong xsum;
#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,
+ src_ip,
+ 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),
- src_ip,
- ntohs(ip->udp_src),
- ntohs(ip->udp_len) - 8);
+ (*udp_packet_handler)((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(enum proto_t protocol)
{
switch (protocol) {
- /* Fall through */
#if defined(CONFIG_CMD_PING)
case PING:
if (NetPingIP == 0) {
#endif
/* Fall through */
+ case BOOTME:
case NETCONS:
case TFTPSRV:
if (NetOurIP == 0) {
case BOOTP:
case CDP:
case DHCP:
+ case LINKLOCAL:
if (memcmp(NetOurEther, "\0\0\0\0\0\0", 6) == 0) {
- extern int eth_get_dev_index(void);
int num = eth_get_dev_index();
switch (num) {
}
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);
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)
+int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot)
{
- IP_t *ip = (IP_t *)xip;
+ ushort protlen;
- /*
- * If the data is an odd number of bytes, zero the
- * byte after the last byte so that the checksum
- * will work.
- */
- if (len & 1)
- xip[IP_HDR_SIZE + len] = 0;
+ memcpy(et->et_dest, addr, 6);
+ memcpy(et->et_src, NetOurEther, 6);
+ protlen = ntohs(et->et_protlen);
+ if (protlen == PROT_VLAN) {
+ struct vlan_ethernet_hdr *vet =
+ (struct vlan_ethernet_hdr *)et;
+ vet->vet_type = htons(prot);
+ return VLAN_ETHER_HDR_SIZE;
+ } else if (protlen > 1514) {
+ et->et_protlen = htons(prot);
+ return ETHER_HDR_SIZE;
+ } else {
+ /* 802.2 + SNAP */
+ struct e802_hdr *et802 = (struct e802_hdr *)et;
+ et802->et_prot = htons(prot);
+ return E802_HDR_SIZE;
+ }
+}
+
+void net_set_ip_header(uchar *pkt, IPaddr_t dest, IPaddr_t source)
+{
+ struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
/*
- * Construct an IP and UDP header.
- * (need to set no fragment bit - XXX)
+ * Construct an IP header.
*/
/* 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_HDR_SIZE);
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;
/* already in network byte order */
- NetCopyIP((void *)&ip->ip_src, &NetOurIP);
- /* - "" - */
+ NetCopyIP((void *)&ip->ip_src, &source);
+ /* already in network byte order */
NetCopyIP((void *)&ip->ip_dst, &dest);
+}
+
+void net_set_udp_header(uchar *pkt, IPaddr_t dest, int dport, int sport,
+ int len)
+{
+ struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
+
+ /*
+ * If the data is an odd number of bytes, zero the
+ * byte after the last byte so that the checksum
+ * will work.
+ */
+ if (len & 1)
+ pkt[IP_UDP_HDR_SIZE + len] = 0;
+
+ net_set_ip_header(pkt, dest, NetOurIP);
+ ip->ip_len = htons(IP_UDP_HDR_SIZE + len);
+ ip->ip_p = IPPROTO_UDP;
+ ip->ip_sum = ~NetCksum((uchar *)ip, IP_HDR_SIZE >> 1);
+
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);
}
void copy_filename(char *dst, const char *src, int size)
projects / karo-tx-uboot.git / blobdiff