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Created a bus/device API that allows for the ROM prefix to specify an

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initial device, and will also allow for e.g. a device menu to be presented
to the user.
This commit is contained in:
Michael Brown
2005-04-21 18:18:29 +00:00
parent 905ca1f21d
commit 98ff29345e
16 changed files with 726 additions and 557 deletions
Download Patch File Download Diff File Expand all files Collapse all files

113
src/core/nic.c
View File

@@ -52,7 +52,7 @@ static unsigned char dhcp_machine_info[] = {
/* Our enclosing DHCP tag */
RFC1533_VENDOR_ETHERBOOT_ENCAP, 11,
/* Our boot device */
RFC1533_VENDOR_NIC_DEV_ID, 5, PCI_BUS_TYPE, 0, 0, 0, 0,
RFC1533_VENDOR_NIC_DEV_ID, 5, 0, 0, 0, 0, 0,
/* Our current architecture */
RFC1533_VENDOR_ARCH, 2, EM_CURRENT & 0xff, (EM_CURRENT >> 8) & 0xff,
#ifdef EM_CURRENT_64
@@ -231,13 +231,10 @@ static int bootp(void);
static unsigned short tcpudpchksum(struct iphdr *ip);
struct nic *nic = &dev.nic;
/*
* Find out what our boot parameters are
*/
static int nic_load_configuration ( struct dev *dev ) {
struct nic *nic = &dev->nic;
static int nic_load_configuration ( struct nic *nic ) {
int server_found;
if ( ! nic->nic_op->connect ( nic ) ) {
@@ -321,35 +318,31 @@ static int nic_load(struct dev *dev __unused)
return 0;
}
static void nic_disable ( struct dev *dev ) {
struct nic *nic = &dev->nic;
void nic_disable ( struct nic *nic __unused ) {
#ifdef MULTICAST_LEVEL2
int i;
for(i = 0; i < MAX_IGMP; i++) {
leave_group(i);
}
#endif
nic->nic_op->disable ( nic );
}
static void nic_print_info ( struct dev *dev ) {
struct nic *nic = &dev->nic;
printf ( "Found %s NIC (MAC %!)\n", dev->name, nic->node_addr );
static char * nic_describe ( struct type_dev *type_dev ) {
struct nic *nic = ( struct nic * ) type_dev;
static char nic_description[] = "MAC 00:00:00:00:00:00";
sprintf ( nic_description + 4, "%!", nic->node_addr );
return nic_description;
}
/*
* Device operations tables
*
*/
static struct dev_operations nic_operations = {
.disable = nic_disable,
.print_info = nic_print_info,
.load_configuration = nic_load_configuration,
.load = nic_load,
struct type_driver nic_driver = {
.name = "NIC",
.type_dev = ( struct type_dev * ) &nic,
.describe = nic_describe,
};
/* Careful. We need an aligned buffer to avoid problems on machines
@@ -360,19 +353,10 @@ static struct dev_operations nic_operations = {
*/
static char packet[ETH_FRAME_LEN + ETH_DATA_ALIGN] __aligned;
/*
* Set up a struct dev to operate as a NIC, return the struct nic *
*
*/
struct nic * nic_device ( struct dev *dev ) {
struct nic *nic = &dev->nic;
memset ( nic, 0, sizeof ( *nic ) );
nic->node_addr = arptable[ARP_CLIENT].node;
nic->packet = packet + ETH_DATA_ALIGN;
dev->dev_op = &nic_operations;
return nic;
}
struct nic nic = {
.node_addr = arptable[ARP_CLIENT].node,
.packet = packet + ETH_DATA_ALIGN,
};
@@ -408,9 +392,9 @@ static int await_arp(int ival, void *ptr,
struct arprequest *arpreply;
if (ptype != ETH_P_ARP)
return 0;
if (nic->packetlen < ETH_HLEN + sizeof(struct arprequest))
if (nic.packetlen < ETH_HLEN + sizeof(struct arprequest))
return 0;
arpreply = (struct arprequest *)&nic->packet[ETH_HLEN];
arpreply = (struct arprequest *)&nic.packet[ETH_HLEN];
if (arpreply->opcode != htons(ARP_REPLY))
return 0;
@@ -697,7 +681,7 @@ int tftp_block ( struct tftpreq_info_t *request, struct tftpblk_info_t *block )
continue; /* Back to waiting for packet */
}
/* Packet has been received */
rcvd = (struct tftp_t *)&nic->packet[ETH_HLEN];
rcvd = (struct tftp_t *)&nic.packet[ETH_HLEN];
recvlen = ntohs(rcvd->udp.len) - sizeof(struct udphdr)
- sizeof(rcvd->opcode);
rport = ntohs(rcvd->udp.src);
@@ -777,9 +761,9 @@ static int await_rarp(int ival, void *ptr,
struct arprequest *arpreply;
if (ptype != ETH_P_RARP)
return 0;
if (nic->packetlen < ETH_HLEN + sizeof(struct arprequest))
if (nic.packetlen < ETH_HLEN + sizeof(struct arprequest))
return 0;
arpreply = (struct arprequest *)&nic->packet[ETH_HLEN];
arpreply = (struct arprequest *)&nic.packet[ETH_HLEN];
if (arpreply->opcode != htons(RARP_REPLY))
return 0;
if ((arpreply->opcode == htons(RARP_REPLY)) &&
@@ -841,9 +825,9 @@ static int await_bootp(int ival __unused, void *ptr __unused,
if (!udp) {
return 0;
}
bootpreply = (struct bootp_t *)&nic->packet[ETH_HLEN +
bootpreply = (struct bootp_t *)&nic.packet[ETH_HLEN +
sizeof(struct iphdr) + sizeof(struct udphdr)];
if (nic->packetlen < ETH_HLEN + sizeof(struct iphdr) +
if (nic.packetlen < ETH_HLEN + sizeof(struct iphdr) +
sizeof(struct udphdr) +
#ifdef NO_DHCP_SUPPORT
sizeof(struct bootp_t)
@@ -916,14 +900,7 @@ static int bootp(void)
unsigned char *bp_vend;
#ifndef NO_DHCP_SUPPORT
struct {
uint8_t bus_type;
uint16_t vendor_id;
uint16_t device_id;
} __attribute__((packed)) *dhcp_dev_id = (void*)&dhcp_machine_info[4];
dhcp_dev_id->bus_type = dev.devid.bus_type;
dhcp_dev_id->vendor_id = htons ( dev.devid.vendor_id );
dhcp_dev_id->device_id = htons ( dev.devid.device_id );
* ( ( struct dhcp_dev_id * ) &dhcp_machine_info[4] ) = nic.dhcp_dev_id;
#endif /* NO_DHCP_SUPPORT */
memset(&ip, 0, sizeof(struct bootpip_t));
ip.bp.bp_op = BOOTP_REQUEST;
@@ -1089,11 +1066,11 @@ static void process_igmp(struct iphdr *ip, unsigned long now)
int i;
unsigned iplen;
if (!ip || (ip->protocol == IP_IGMP) ||
(nic->packetlen < sizeof(struct iphdr) + sizeof(struct igmp))) {
(nic.packetlen < sizeof(struct iphdr) + sizeof(struct igmp))) {
return;
}
iplen = (ip->verhdrlen & 0xf)*4;
igmp = (struct igmp *)&nic->packet[sizeof(struct iphdr)];
igmp = (struct igmp *)&nic.packet[sizeof(struct iphdr)];
if (ipchksum(igmp, ntohs(ip->len) - iplen) != 0)
return;
if ((igmp->type == IGMP_QUERY) &&
@@ -1300,7 +1277,7 @@ int tcp_transaction(unsigned long destip, unsigned int destsock, void *ptr,
syn_ack = state == CLOSED || state == SYN_RCVD;
consumed = ntohl(tcp->ack) - send_seq - syn_ack;
if (consumed < 0 || consumed > can_send) {
tcp_reset((struct iphdr *)&nic->packet[ETH_HLEN]);
tcp_reset((struct iphdr *)&nic.packet[ETH_HLEN]);
goto recv_data;
}
@@ -1342,7 +1319,7 @@ int tcp_transaction(unsigned long destip, unsigned int destsock, void *ptr,
}
consume_data:
ip = (struct iphdr *)&nic->packet[ETH_HLEN];
ip = (struct iphdr *)&nic.packet[ETH_HLEN];
header_size = sizeof(struct iphdr) + ((ntohs(tcp->ctrl)>>10)&0x3C);
payload = ntohs(ip->len) - header_size;
if (payload > 0 && state == ESTABLISHED) {
@@ -1351,7 +1328,7 @@ int tcp_transaction(unsigned long destip, unsigned int destsock, void *ptr,
recv_seq += payload - old_bytes;
if (state != FIN_WAIT_1 && state != FIN_WAIT_2 &&
!recv(payload - old_bytes,
&nic->packet[ETH_HLEN+header_size+old_bytes],
&nic.packet[ETH_HLEN+header_size+old_bytes],
ptr)) {
goto close;
}
@@ -1463,15 +1440,15 @@ int await_reply(reply_t reply, int ival, void *ptr, long timeout)
/* We have something! */
/* Find the Ethernet packet type */
if (nic->packetlen >= ETH_HLEN) {
ptype = ((unsigned short) nic->packet[12]) << 8
| ((unsigned short) nic->packet[13]);
if (nic.packetlen >= ETH_HLEN) {
ptype = ((unsigned short) nic.packet[12]) << 8
| ((unsigned short) nic.packet[13]);
} else continue; /* what else could we do with it? */
/* Verify an IP header */
ip = 0;
if ((ptype == ETH_P_IP) && (nic->packetlen >= ETH_HLEN + sizeof(struct iphdr))) {
if ((ptype == ETH_P_IP) && (nic.packetlen >= ETH_HLEN + sizeof(struct iphdr))) {
unsigned ipoptlen;
ip = (struct iphdr *)&nic->packet[ETH_HLEN];
ip = (struct iphdr *)&nic.packet[ETH_HLEN];
if ((ip->verhdrlen < 0x45) || (ip->verhdrlen > 0x4F))
continue;
iplen = (ip->verhdrlen & 0xf) * 4;
@@ -1493,17 +1470,17 @@ int await_reply(reply_t reply, int ival, void *ptr, long timeout)
/* Delete the ip options, to guarantee
* good alignment, and make etherboot simpler.
*/
memmove(&nic->packet[ETH_HLEN + sizeof(struct iphdr)],
&nic->packet[ETH_HLEN + iplen],
nic->packetlen - ipoptlen);
nic->packetlen -= ipoptlen;
memmove(&nic.packet[ETH_HLEN + sizeof(struct iphdr)],
&nic.packet[ETH_HLEN + iplen],
nic.packetlen - ipoptlen);
nic.packetlen -= ipoptlen;
}
}
udp = 0;
if (ip && (ip->protocol == IP_UDP) &&
(nic->packetlen >=
(nic.packetlen >=
ETH_HLEN + sizeof(struct iphdr) + sizeof(struct udphdr))) {
udp = (struct udphdr *)&nic->packet[ETH_HLEN + sizeof(struct iphdr)];
udp = (struct udphdr *)&nic.packet[ETH_HLEN + sizeof(struct iphdr)];
/* Make certain we have a reasonable packet length */
if (ntohs(udp->len) > (ntohs(ip->len) - iplen))
@@ -1517,9 +1494,9 @@ int await_reply(reply_t reply, int ival, void *ptr, long timeout)
tcp = 0;
#ifdef DOWNLOAD_PROTO_HTTP
if (ip && (ip->protocol == IP_TCP) &&
(nic->packetlen >=
(nic.packetlen >=
ETH_HLEN + sizeof(struct iphdr) + sizeof(struct tcphdr))){
tcp = (struct tcphdr *)&nic->packet[ETH_HLEN +
tcp = (struct tcphdr *)&nic.packet[ETH_HLEN +
sizeof(struct iphdr)];
/* Make certain we have a reasonable packet length */
if (((ntohs(tcp->ctrl) >> 10) & 0x3C) >
@@ -1541,11 +1518,11 @@ int await_reply(reply_t reply, int ival, void *ptr, long timeout)
* action. This allows us reply to arp, igmp, and lacp queries.
*/
if ((ptype == ETH_P_ARP) &&
(nic->packetlen >= ETH_HLEN + sizeof(struct arprequest))) {
(nic.packetlen >= ETH_HLEN + sizeof(struct arprequest))) {
struct arprequest *arpreply;
unsigned long tmp;
arpreply = (struct arprequest *)&nic->packet[ETH_HLEN];
arpreply = (struct arprequest *)&nic.packet[ETH_HLEN];
memcpy(&tmp, arpreply->tipaddr, sizeof(in_addr));
if ((arpreply->opcode == htons(ARP_REQUEST)) &&
(tmp == arptable[ARP_CLIENT].ipaddr.s_addr)) {