Patches by Pantelis Antoniou, 30 Mar 2004:
add networking support for VLANs (802.1q), and CDP (Cisco Discovery Protocol)
diff --git a/net/bootp.c b/net/bootp.c
index 21ce7b2..4bca50d 100644
--- a/net/bootp.c
+++ b/net/bootp.c
@@ -644,8 +644,7 @@
pkt = NetTxPacket;
memset ((void*)pkt, 0, PKTSIZE);
- NetSetEther(pkt, NetBcastAddr, PROT_IP);
- pkt += ETHER_HDR_SIZE;
+ pkt += NetSetEther(pkt, NetBcastAddr, PROT_IP);
/*
* Next line results in incorrect packet size being transmitted, resulting
@@ -791,8 +790,7 @@
pkt = NetTxPacket;
memset ((void*)pkt, 0, PKTSIZE);
- NetSetEther(pkt, NetBcastAddr, PROT_IP);
- pkt += ETHER_HDR_SIZE;
+ pkt += NetSetEther(pkt, NetBcastAddr, PROT_IP);
iphdr = pkt; /* We'll need this later to set proper pkt size */
pkt += IP_HDR_SIZE;
diff --git a/net/eth.c b/net/eth.c
index 7eae469..7f8afe7 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -87,6 +87,14 @@
if (!eth_devices) {
eth_current = eth_devices = dev;
+#ifdef CONFIG_NET_MULTI
+ /* update current ethernet name */
+ {
+ char *act = getenv("ethact");
+ if (act == NULL || strcmp(act, eth_current->name) != 0)
+ setenv("ethact", eth_current->name);
+ }
+#endif
} else {
for (d=eth_devices; d->next!=eth_devices; d=d->next);
d->next = dev;
@@ -221,6 +229,16 @@
dev = dev->next;
} while(dev != eth_devices);
+#ifdef CONFIG_NET_MULTI
+ /* update current ethernet name */
+ if (eth_current) {
+ char *act = getenv("ethact");
+ if (act == NULL || strcmp(act, eth_current->name) != 0)
+ setenv("ethact", eth_current->name);
+ } else
+ setenv("ethact", NULL);
+#endif
+
putc ('\n');
}
@@ -326,12 +344,44 @@
eth_current = eth_current->next;
+#ifdef CONFIG_NET_MULTI
+ /* update current ethernet name */
+ {
+ char *act = getenv("ethact");
+ if (act == NULL || strcmp(act, eth_current->name) != 0)
+ setenv("ethact", eth_current->name);
+ }
+#endif
+
if (first_failed == eth_current)
{
NetRestartWrap = 1;
}
}
+#ifdef CONFIG_NET_MULTI
+void eth_set_current(void)
+{
+ char *act;
+ struct eth_device* old_current;
+
+ if (!eth_current) /* XXX no current */
+ return;
+
+ act = getenv("ethact");
+ if (act != NULL) {
+ old_current = eth_current;
+ do {
+ if (strcmp(eth_current->name, act) == 0)
+ return;
+ eth_current = eth_current->next;
+ } while (old_current != eth_current);
+ }
+
+ setenv("ethact", eth_current->name);
+}
+#endif
+
char *eth_get_name (void)
{
return (eth_current ? eth_current->name : "unknown");
diff --git a/net/net.c b/net/net.c
index eaab562..80d0475 100644
--- a/net/net.c
+++ b/net/net.c
@@ -121,6 +121,10 @@
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
uchar NetEtherNullAddr[6] =
{ 0, 0, 0, 0, 0, 0 };
+#if (CONFIG_COMMANDS & CFG_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 */
@@ -128,6 +132,9 @@
static int NetDevExists = 0; /* At least one device configured */
#endif
+ushort NetOurVLAN = ntohs(-1); /* default is without VLAN */
+ushort NetOurNativeVLAN = htons(-1); /* dido */
+
char BootFile[128]; /* Boot File name */
#if (CONFIG_COMMANDS & CFG_CMD_PING)
@@ -136,6 +143,10 @@
static void PingStart(void);
#endif
+#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+static void CDPStart(void);
+#endif
+
volatile uchar PktBuf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN];
volatile uchar *NetRxPackets[PKTBUFSRX]; /* Receive packets */
@@ -170,8 +181,7 @@
#endif
pkt = NetTxPacket;
- NetSetEther(pkt, NetBcastAddr, PROT_ARP);
- pkt += ETHER_HDR_SIZE;
+ pkt += NetSetEther(pkt, NetBcastAddr, PROT_ARP);
arp = (ARP_t *)pkt;
@@ -196,7 +206,7 @@
NetArpWaitReplyIP = NetArpWaitPacketIP;
NetWriteIP((uchar*)&arp->ar_data[16], NetArpWaitReplyIP);
- (void) eth_send(NetTxPacket, ETHER_HDR_SIZE + ARP_HDR_SIZE);
+ (void) eth_send(NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE);
}
void ArpTimeoutCheck(void)
@@ -269,6 +279,7 @@
}
eth_halt();
+ eth_set_current();
if(eth_init(bd) < 0)
return(-1);
@@ -298,6 +309,8 @@
NetCopyIP(&NetOurIP, &bd->bi_ip_addr);
NetOurGatewayIP = getenv_IPaddr ("gatewayip");
NetOurSubnetMask= getenv_IPaddr ("netmask");
+ NetOurVLAN = getenv_VLAN("vlan");
+ NetOurNativeVLAN = getenv_VLAN("nvlan");
switch (protocol) {
#if (CONFIG_COMMANDS & CFG_CMD_NFS)
@@ -324,6 +337,11 @@
*/
NetOurIP = 0;
NetServerIP = getenv_IPaddr ("serverip");
+ NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
+ NetOurNativeVLAN = getenv_VLAN("nvlan");
+ case CDP:
+ NetOurVLAN = getenv_VLAN("vlan"); /* VLANs must be read */
+ NetOurNativeVLAN = getenv_VLAN("nvlan");
break;
default:
break;
@@ -378,6 +396,11 @@
NfsStart();
break;
#endif
+#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+ case CDP:
+ CDPStart();
+ break;
+#endif
default:
break;
}
@@ -469,6 +492,9 @@
NetBootFileXferSize);
sprintf(buf, "%lx", NetBootFileXferSize);
setenv("filesize", buf);
+
+ sprintf(buf, "%lX", (unsigned long)load_addr);
+ setenv("fileaddr", buf);
}
eth_halt();
return NetBootFileXferSize;
@@ -496,12 +522,19 @@
void
NetStartAgain(void)
{
+ DECLARE_GLOBAL_DATA_PTR;
+ char *s;
+
+ if ((s = getenv("netretry")) != NULL && *s == 'n') {
+ eth_halt();
+ NetState = NETLOOP_FAIL;
+ return;
+ }
+
#ifndef CONFIG_NET_MULTI
NetSetTimeout(10 * CFG_HZ, startAgainTimeout);
NetSetHandler(startAgainHandler);
#else
- DECLARE_GLOBAL_DATA_PTR;
-
eth_halt();
eth_try_another(!NetRestarted);
eth_init(gd->bd);
@@ -559,6 +592,8 @@
int
NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int len)
{
+ uchar *pkt;
+
/* convert to new style broadcast */
if (dest == 0)
dest = 0xFFFFFFFF;
@@ -573,16 +608,17 @@
#ifdef ET_DEBUG
printf("sending ARP for %08lx\n", dest);
#endif
-
NetArpWaitPacketIP = dest;
NetArpWaitPacketMAC = ether;
- NetSetEther (NetArpWaitTxPacket, NetArpWaitPacketMAC, PROT_IP);
- NetSetIP (NetArpWaitTxPacket + ETHER_HDR_SIZE, dest, dport, sport, len);
- memcpy(NetArpWaitTxPacket + ETHER_HDR_SIZE + IP_HDR_SIZE,
- (uchar *)NetTxPacket + ETHER_HDR_SIZE + IP_HDR_SIZE, len);
+
+ 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 = ETHER_HDR_SIZE + IP_HDR_SIZE + len;
+ NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE + len;
/* and do the ARP request */
NetArpWaitTry = 1;
@@ -596,9 +632,10 @@
dest, ether[0], ether[1], ether[2], ether[3], ether[4], ether[5]);
#endif
- NetSetEther (NetTxPacket, ether, PROT_IP);
- NetSetIP (NetTxPacket + ETHER_HDR_SIZE, dest, dport, sport, len);
- (void) eth_send(NetTxPacket, ETHER_HDR_SIZE + IP_HDR_SIZE + len);
+ 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; /* transmited */
}
@@ -611,6 +648,7 @@
static uchar mac[6];
volatile IP_t *ip;
volatile ushort *s;
+ uchar *pkt;
/* XXX always send arp request */
@@ -623,9 +661,10 @@
NetArpWaitPacketIP = NetPingIP;
NetArpWaitPacketMAC = mac;
- NetSetEther(NetArpWaitTxPacket, mac, PROT_IP);
+ pkt = NetArpWaitTxPacket;
+ pkt += NetSetEther(pkt, mac, PROT_IP);
- ip = (volatile IP_t *)(NetArpWaitTxPacket + ETHER_HDR_SIZE);
+ ip = (volatile IP_t *)pkt;
/*
* Construct an IP and ICMP header. (need to set no fragment bit - XXX)
@@ -650,7 +689,7 @@
s[1] = ~NetCksum((uchar *)s, 8/2);
/* size of the waiting packet */
- NetArpWaitTxPacketSize = ETHER_HDR_SIZE + IP_HDR_SIZE_NO_UDP + 8;
+ NetArpWaitTxPacketSize = (pkt - NetArpWaitTxPacket) + IP_HDR_SIZE_NO_UDP + 8;
/* and do the ARP request */
NetArpWaitTry = 1;
@@ -681,6 +720,9 @@
static void PingStart(void)
{
+#if defined(CONFIG_NET_MULTI)
+ printf ("Using %s device\n", eth_get_name());
+#endif
NetSetTimeout (10 * CFG_HZ, PingTimeout);
NetSetHandler (PingHandler);
@@ -689,37 +731,454 @@
#endif
+#if (CONFIG_COMMANDS & CFG_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 (CFG_HZ/4) /* 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;
+
+ if (len > 0) {
+ odd = 1 & (ulong)buff;
+ if (odd) {
+ result = *buff << 8;
+ len--;
+ buff++;
+ }
+ while (len > 1) {
+ result += *((const ushort *)buff)++;
+ if (result & 0x80000000)
+ result = (result & 0xFFFF) + (result >> 16);
+ len -= 2;
+ }
+ if (len) {
+ leftover = (signed short)(*(const signed char *)buff);
+ /* * XXX CISCO SUCKS big time! (and blows too) */
+ 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;
+ char buf[32];
+ int len;
+ ushort chksum;
+
+ 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);
+ memset(buf, 0, sizeof(buf));
+ sprintf(buf, CONFIG_CDP_DEVICE_ID_PREFIX "%02X%02X%02X%02X%02X%02X",
+ NetOurEther[0] & 0xff, NetOurEther[1] & 0xff,
+ NetOurEther[2] & 0xff, NetOurEther[3] & 0xff,
+ NetOurEther[4] & 0xff, NetOurEther[5] & 0xff);
+ 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, unsigned src, unsigned len)
+{
+ /* nothing */
+}
+
+static void
+CDPHandler(const uchar * pkt, unsigned len)
+{
+ 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;
+
+ 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 */
+#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());
+#endif
+ CDPSeq = 0;
+ CDPOK = 0;
+
+ CDPNativeVLAN = htons(-1);
+ CDPApplianceVLAN = htons(-1);
+
+ NetSetTimeout (CDP_TIMEOUT, CDPTimeout);
+ NetSetHandler (CDPDummyHandler);
+
+ CDPSendTrigger();
+}
+
+#endif
+
+
void
-NetReceive(volatile uchar * pkt, int len)
+NetReceive(volatile uchar * inpkt, int len)
{
Ethernet_t *et;
IP_t *ip;
ARP_t *arp;
IPaddr_t tmp;
int x;
+ uchar *pkt;
+#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+ int iscdp;
+#endif
+ ushort cti = 0, vlanid = VLAN_NONE, myvlanid, mynvlanid;
- NetRxPkt = pkt;
+#ifdef ET_DEBUG
+ printf("packet received\n");
+#endif
+
+ NetRxPkt = inpkt;
NetRxPktLen = len;
- et = (Ethernet_t *)pkt;
+ et = (Ethernet_t *)inpkt;
+
+ /* too small packet? */
+ if (len < ETHER_HDR_SIZE)
+ return;
+
+#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+ /* keep track if packet is CDP */
+ iscdp = memcmp(et->et_dest, NetCDPAddr, 6) == 0;
+#endif
+
+ myvlanid = ntohs(NetOurVLAN);
+ if (myvlanid == (ushort)-1)
+ myvlanid = VLAN_NONE;
+ mynvlanid = ntohs(NetOurNativeVLAN);
+ if (mynvlanid == (ushort)-1)
+ mynvlanid = VLAN_NONE;
x = ntohs(et->et_protlen);
+#ifdef ET_DEBUG
+ printf("packet received\n");
+#endif
+
if (x < 1514) {
/*
* Got a 802 packet. Check the other protocol field.
*/
x = ntohs(et->et_prot);
- ip = (IP_t *)(pkt + E802_HDR_SIZE);
+
+ ip = (IP_t *)(inpkt + E802_HDR_SIZE);
len -= E802_HDR_SIZE;
- } else {
- ip = (IP_t *)(pkt + ETHER_HDR_SIZE);
+
+ } else if (x != PROT_VLAN) { /* normal packet */
+ ip = (IP_t *)(inpkt + ETHER_HDR_SIZE);
len -= ETHER_HDR_SIZE;
+
+ } else { /* VLAN packet */
+ VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)et;
+
+#ifdef ET_DEBUG
+ printf("VLAN packet received\n");
+#endif
+ /* too small packet? */
+ if (len < VLAN_ETHER_HDR_SIZE)
+ return;
+
+ /* if no VLAN active */
+ if ((ntohs(NetOurVLAN) & VLAN_IDMASK) == VLAN_NONE
+#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+ && iscdp == 0
+#endif
+ )
+ return;
+
+ cti = ntohs(vet->vet_tag);
+ vlanid = cti & VLAN_IDMASK;
+ x = ntohs(vet->vet_type);
+
+ ip = (IP_t *)(inpkt + VLAN_ETHER_HDR_SIZE);
+ len -= VLAN_ETHER_HDR_SIZE;
}
#ifdef ET_DEBUG
printf("Receive from protocol 0x%x\n", x);
#endif
+#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+ if (iscdp) {
+ CDPHandler((uchar *)ip, len);
+ return;
+ }
+#endif
+
+ if ((myvlanid & VLAN_IDMASK) != VLAN_NONE) {
+ if (vlanid == VLAN_NONE)
+ vlanid = (mynvlanid & VLAN_IDMASK);
+ /* not matched? */
+ if (vlanid != (myvlanid & VLAN_IDMASK))
+ return;
+ }
+
switch (x) {
case PROT_ARP:
@@ -766,13 +1225,14 @@
#ifdef ET_DEBUG
puts ("Got ARP REQUEST, return our IP\n");
#endif
- NetSetEther((uchar *)et, et->et_src, PROT_ARP);
+ 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, ((uchar *)arp-pkt) + ARP_HDR_SIZE);
+ (void) eth_send((uchar *)et, (pkt - (uchar *)et) + ARP_HDR_SIZE);
return;
case ARPOP_REPLY: /* arp reply */
@@ -963,6 +1423,7 @@
case DHCP:
case RARP:
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);
@@ -1016,17 +1477,42 @@
return (xsum & 0xffff);
}
+int
+NetEthHdrSize(void)
+{
+ ushort myvlanid;
-void
+ myvlanid = ntohs(NetOurVLAN);
+ if (myvlanid == (ushort)-1)
+ myvlanid = VLAN_NONE;
+
+ return ((myvlanid & VLAN_IDMASK) == VLAN_NONE) ? ETHER_HDR_SIZE : VLAN_ETHER_HDR_SIZE;
+}
+
+int
NetSetEther(volatile uchar * xet, uchar * addr, uint prot)
{
Ethernet_t *et = (Ethernet_t *)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);
+ if ((myvlanid & VLAN_IDMASK) == VLAN_NONE) {
et->et_protlen = htons(prot);
-}
+ return ETHER_HDR_SIZE;
+ } else {
+ VLAN_Ethernet_t *vet = (VLAN_Ethernet_t *)xet;
+ vet->vet_vlan_type = htons(PROT_VLAN);
+ vet->vet_tag = htons((0 << 5) | (myvlanid & VLAN_IDMASK));
+ vet->vet_type = htons(prot);
+ return VLAN_ETHER_HDR_SIZE;
+ }
+}
void
NetSetIP(volatile uchar * xip, IPaddr_t dest, int dport, int sport, int len)
@@ -1079,13 +1565,12 @@
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)
@@ -1109,16 +1594,49 @@
return (htonl(addr));
}
+void VLAN_to_string(ushort x, char *s)
+{
+ x = ntohs(x);
+
+ if (x == (ushort)-1)
+ x = VLAN_NONE;
+
+ if (x == VLAN_NONE)
+ strcpy(s, "none");
+ else
+ sprintf(s, "%d", x & VLAN_IDMASK);
+}
+
+ushort string_to_VLAN(char *s)
+{
+ ushort id;
+
+ if (s == NULL)
+ return VLAN_NONE;
+
+ if (*s < '0' || *s > '9')
+ id = VLAN_NONE;
+ else
+ id = (ushort)simple_strtoul(s, NULL, 10);
+
+ return id;
+}
+
void print_IPaddr (IPaddr_t x)
{
- char tmp[16];
+ char tmp[16];
- ip_to_string(x, tmp);
+ ip_to_string (x, tmp);
- puts(tmp);
+ puts (tmp);
}
IPaddr_t getenv_IPaddr (char *var)
{
return (string_to_ip(getenv(var)));
}
+
+ushort getenv_VLAN(char *var)
+{
+ return (string_to_VLAN(getenv(var)));
+}
diff --git a/net/nfs.c b/net/nfs.c
index 137b3bf..300c08f 100644
--- a/net/nfs.c
+++ b/net/nfs.c
@@ -192,7 +192,7 @@
pktlen = (char *)p + datalen*sizeof(uint32_t) - (char *)&pkt;
- memcpy ((char *)NetTxPacket+ETHER_HDR_SIZE+IP_HDR_SIZE, (char *)&pkt, pktlen);
+ memcpy ((char *)NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE, (char *)&pkt, pktlen);
if (rpc_prog == PROG_PORTMAP)
sport = SUNRPC_PORT;
diff --git a/net/rarp.c b/net/rarp.c
index f9df076..1ba60e8 100644
--- a/net/rarp.c
+++ b/net/rarp.c
@@ -96,8 +96,7 @@
printf("RARP broadcast %d\n", ++RarpTry);
pkt = NetTxPacket;
- NetSetEther(pkt, NetBcastAddr, PROT_RARP);
- pkt += ETHER_HDR_SIZE;
+ pkt += NetSetEther(pkt, NetBcastAddr, PROT_RARP);
rarp = (ARP_t *)pkt;
@@ -114,7 +113,7 @@
rarp->ar_data[16 + i] = 0xff;
}
- NetSendPacket(NetTxPacket, ETHER_HDR_SIZE + ARP_HDR_SIZE);
+ NetSendPacket(NetTxPacket, (pkt - NetTxPacket) + ARP_HDR_SIZE);
NetSetTimeout(TIMEOUT * CFG_HZ, RarpTimeout);
NetSetHandler(RarpHandler);
diff --git a/net/tftp.c b/net/tftp.c
index 2d3ee5f..5a5ae22 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -111,7 +111,7 @@
* We will always be sending some sort of packet, so
* cobble together the packet headers now.
*/
- pkt = NetTxPacket + ETHER_HDR_SIZE + IP_HDR_SIZE;
+ pkt = NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE;
switch (TftpState) {