575 lines
13 KiB
C
575 lines
13 KiB
C
/*
|
|
inet/mnx_eth.c
|
|
|
|
Created: Jan 2, 1992 by Philip Homburg
|
|
|
|
Copyright 1995 Philip Homburg
|
|
*/
|
|
|
|
#include "inet.h"
|
|
#include "proto.h"
|
|
#include "osdep_eth.h"
|
|
#include "generic/type.h"
|
|
|
|
#include "generic/assert.h"
|
|
#include "generic/buf.h"
|
|
#include "generic/clock.h"
|
|
#include "generic/eth.h"
|
|
#include "generic/eth_int.h"
|
|
#include "generic/sr.h"
|
|
|
|
#include <minix/syslib.h>
|
|
#define _MINIX
|
|
#include <unistd.h>
|
|
|
|
THIS_FILE
|
|
|
|
FORWARD _PROTOTYPE( void setup_read, (eth_port_t *eth_port) );
|
|
FORWARD _PROTOTYPE( void read_int, (eth_port_t *eth_port, int count) );
|
|
FORWARD _PROTOTYPE( void write_int, (eth_port_t *eth_port) );
|
|
FORWARD _PROTOTYPE( void eth_recvev, (event_t *ev, ev_arg_t ev_arg) );
|
|
FORWARD _PROTOTYPE( void eth_sendev, (event_t *ev, ev_arg_t ev_arg) );
|
|
FORWARD _PROTOTYPE( eth_port_t *find_port, (message *m) );
|
|
|
|
PUBLIC void osdep_eth_init()
|
|
{
|
|
int i, r, tasknr;
|
|
struct eth_conf *ecp;
|
|
eth_port_t *eth_port;
|
|
message mess, repl_mess;
|
|
|
|
for (i= 0, eth_port= eth_port_table, ecp= eth_conf;
|
|
i<eth_conf_nr; i++, eth_port++, ecp++)
|
|
{
|
|
#if DEAD_CODE
|
|
r = sys_getprocnr(&tasknr, ecp->ec_task, strlen(ecp->ec_task));
|
|
#endif
|
|
r = findproc(ecp->ec_task, &tasknr);
|
|
if (r != OK)
|
|
{
|
|
ip_panic(( "unable to find task %s: %d\n",
|
|
ecp->ec_task, r ));
|
|
}
|
|
|
|
|
|
eth_port->etp_osdep.etp_port= ecp->ec_port;
|
|
eth_port->etp_osdep.etp_task= tasknr;
|
|
ev_init(ð_port->etp_osdep.etp_recvev);
|
|
|
|
mess.m_type= DL_INIT;
|
|
mess.DL_PORT= eth_port->etp_osdep.etp_port;
|
|
mess.DL_PROC= this_proc;
|
|
mess.DL_MODE= DL_NOMODE;
|
|
|
|
r= send(eth_port->etp_osdep.etp_task, &mess);
|
|
if (r<0)
|
|
{
|
|
#if !CRAMPED
|
|
printf(
|
|
"osdep_eth_init: unable to send to ethernet task, error= %d\n",
|
|
r);
|
|
#endif
|
|
continue;
|
|
}
|
|
|
|
if (receive(eth_port->etp_osdep.etp_task, &mess)<0)
|
|
ip_panic(("unable to receive"));
|
|
|
|
if (mess.m3_i1 == ENXIO)
|
|
{
|
|
#if !CRAMPED
|
|
printf(
|
|
"osdep_eth_init: no ethernet device at task=%d,port=%d\n",
|
|
eth_port->etp_osdep.etp_task,
|
|
eth_port->etp_osdep.etp_port);
|
|
#endif
|
|
continue;
|
|
}
|
|
if (mess.m3_i1 != eth_port->etp_osdep.etp_port)
|
|
ip_panic(("osdep_eth_init: DL_INIT error or wrong port: %d\n",
|
|
mess.m3_i1));
|
|
|
|
eth_port->etp_ethaddr= *(ether_addr_t *)mess.m3_ca1;
|
|
|
|
sr_add_minor(if2minor(ecp->ec_ifno, ETH_DEV_OFF),
|
|
i, eth_open, eth_close, eth_read,
|
|
eth_write, eth_ioctl, eth_cancel);
|
|
|
|
eth_port->etp_flags |= EPF_ENABLED;
|
|
eth_port->etp_wr_pack= 0;
|
|
eth_port->etp_rd_pack= 0;
|
|
setup_read (eth_port);
|
|
eth_port++;
|
|
}
|
|
}
|
|
|
|
PUBLIC void eth_write_port(eth_port, pack)
|
|
eth_port_t *eth_port;
|
|
acc_t *pack;
|
|
{
|
|
eth_port_t *loc_port;
|
|
message mess1, block_msg;
|
|
int i, pack_size;
|
|
acc_t *pack_ptr;
|
|
iovec_t *iovec;
|
|
u8_t *eth_dst_ptr;
|
|
int multicast, r;
|
|
ev_arg_t ev_arg;
|
|
|
|
assert(eth_port->etp_wr_pack == NULL);
|
|
eth_port->etp_wr_pack= pack;
|
|
|
|
iovec= eth_port->etp_osdep.etp_wr_iovec;
|
|
pack_size= 0;
|
|
for (i=0, pack_ptr= pack; i<IOVEC_NR && pack_ptr; i++,
|
|
pack_ptr= pack_ptr->acc_next)
|
|
{
|
|
iovec[i].iov_addr= (vir_bytes)ptr2acc_data(pack_ptr);
|
|
pack_size += iovec[i].iov_size= pack_ptr->acc_length;
|
|
}
|
|
if (i>= IOVEC_NR)
|
|
{
|
|
pack= bf_pack(pack); /* packet is too fragmented */
|
|
eth_port->etp_wr_pack= pack;
|
|
pack_size= 0;
|
|
for (i=0, pack_ptr= pack; i<IOVEC_NR && pack_ptr;
|
|
i++, pack_ptr= pack_ptr->acc_next)
|
|
{
|
|
iovec[i].iov_addr= (vir_bytes)ptr2acc_data(pack_ptr);
|
|
pack_size += iovec[i].iov_size= pack_ptr->acc_length;
|
|
}
|
|
}
|
|
assert (i< IOVEC_NR);
|
|
assert (pack_size >= ETH_MIN_PACK_SIZE);
|
|
|
|
if (i == 1)
|
|
{
|
|
/* simple packets can be sent using DL_WRITE instead of
|
|
* DL_WRITEV.
|
|
*/
|
|
mess1.DL_COUNT= iovec[0].iov_size;
|
|
mess1.DL_ADDR= (char *)iovec[0].iov_addr;
|
|
mess1.m_type= DL_WRITE;
|
|
}
|
|
else
|
|
{
|
|
mess1.DL_COUNT= i;
|
|
mess1.DL_ADDR= (char *)iovec;
|
|
mess1.m_type= DL_WRITEV;
|
|
}
|
|
mess1.DL_PORT= eth_port->etp_osdep.etp_port;
|
|
mess1.DL_PROC= this_proc;
|
|
mess1.DL_MODE= DL_NOMODE;
|
|
|
|
for (;;)
|
|
{
|
|
r= send (eth_port->etp_osdep.etp_task, &mess1);
|
|
if (r != ELOCKED)
|
|
break;
|
|
|
|
/* ethernet task is sending to this task, I hope */
|
|
r= receive(eth_port->etp_osdep.etp_task, &block_msg);
|
|
if (r < 0)
|
|
ip_panic(("unable to receive"));
|
|
|
|
loc_port= eth_port;
|
|
if (loc_port->etp_osdep.etp_port != block_msg.DL_PORT)
|
|
{
|
|
loc_port= find_port(&block_msg);
|
|
}
|
|
assert(block_msg.DL_STAT & (DL_PACK_SEND|DL_PACK_RECV));
|
|
if (block_msg.DL_STAT & DL_PACK_SEND)
|
|
{
|
|
assert(loc_port != eth_port);
|
|
loc_port->etp_osdep.etp_sendrepl= block_msg;
|
|
ev_arg.ev_ptr= loc_port;
|
|
ev_enqueue(&loc_port->etp_sendev, eth_sendev, ev_arg);
|
|
}
|
|
if (block_msg.DL_STAT & DL_PACK_RECV)
|
|
{
|
|
loc_port->etp_osdep.etp_recvrepl= block_msg;
|
|
ev_arg.ev_ptr= loc_port;
|
|
ev_enqueue(&loc_port->etp_osdep.etp_recvev,
|
|
eth_recvev, ev_arg);
|
|
}
|
|
}
|
|
|
|
if (r < 0)
|
|
ip_panic(("unable to send"));
|
|
|
|
r= receive(eth_port->etp_osdep.etp_task, &mess1);
|
|
if (r < 0)
|
|
ip_panic(("unable to receive"));
|
|
|
|
assert(mess1.m_type == DL_TASK_REPLY &&
|
|
mess1.DL_PORT == mess1.DL_PORT &&
|
|
mess1.DL_PROC == this_proc);
|
|
assert((mess1.DL_STAT >> 16) == OK);
|
|
|
|
if (mess1.DL_STAT & DL_PACK_RECV)
|
|
{
|
|
eth_port->etp_osdep.etp_recvrepl= mess1;
|
|
ev_arg.ev_ptr= eth_port;
|
|
ev_enqueue(ð_port->etp_osdep.etp_recvev, eth_recvev,
|
|
ev_arg);
|
|
}
|
|
if (!(mess1.DL_STAT & DL_PACK_SEND))
|
|
{
|
|
/* Packet is not yet sent. */
|
|
return;
|
|
}
|
|
|
|
/* If the port is in promiscuous mode or the packet is
|
|
* broadcasted/multicasted, enqueue the reply packet.
|
|
*/
|
|
eth_dst_ptr= (u8_t *)ptr2acc_data(pack);
|
|
multicast= (*eth_dst_ptr & 1); /* low order bit indicates multicast */
|
|
if (multicast || (eth_port->etp_osdep.etp_recvconf & NWEO_EN_PROMISC))
|
|
{
|
|
eth_port->etp_osdep.etp_sendrepl= mess1;
|
|
ev_arg.ev_ptr= eth_port;
|
|
ev_enqueue(ð_port->etp_sendev, eth_sendev, ev_arg);
|
|
|
|
/* Pretend that we didn't get a reply. */
|
|
return;
|
|
}
|
|
|
|
/* packet is sent */
|
|
bf_afree(eth_port->etp_wr_pack);
|
|
eth_port->etp_wr_pack= NULL;
|
|
}
|
|
|
|
PUBLIC void eth_rec(m)
|
|
message *m;
|
|
{
|
|
int i;
|
|
eth_port_t *loc_port;
|
|
int stat;
|
|
|
|
assert(m->m_type == DL_TASK_REPLY);
|
|
|
|
set_time (m->DL_CLCK);
|
|
|
|
for (i=0, loc_port= eth_port_table; i<eth_conf_nr; i++, loc_port++)
|
|
{
|
|
if (loc_port->etp_osdep.etp_port == m->DL_PORT &&
|
|
loc_port->etp_osdep.etp_task == m->m_source)
|
|
break;
|
|
}
|
|
if (i == eth_conf_nr)
|
|
{
|
|
ip_panic(("message from unknown source: %d:%d",
|
|
m->m_source, m->DL_PORT));
|
|
}
|
|
|
|
stat= m->DL_STAT & 0xffff;
|
|
|
|
assert(stat & (DL_PACK_SEND|DL_PACK_RECV));
|
|
if (stat & DL_PACK_SEND)
|
|
write_int(loc_port);
|
|
if (stat & DL_PACK_RECV)
|
|
read_int(loc_port, m->DL_COUNT);
|
|
}
|
|
|
|
#ifndef notdef
|
|
PUBLIC int eth_get_stat(eth_port, eth_stat)
|
|
eth_port_t *eth_port;
|
|
eth_stat_t *eth_stat;
|
|
{
|
|
acc_t *acc;
|
|
int result;
|
|
message mess, mlocked;
|
|
|
|
mess.m_type= DL_GETSTAT;
|
|
mess.DL_PORT= eth_port->etp_osdep.etp_port;
|
|
mess.DL_PROC= this_proc;
|
|
mess.DL_ADDR= (char *)eth_stat;
|
|
|
|
for (;;)
|
|
{
|
|
result= send(eth_port->etp_osdep.etp_task, &mess);
|
|
if (result != ELOCKED)
|
|
break;
|
|
result= receive(eth_port->etp_osdep.etp_task, &mlocked);
|
|
assert(result == OK);
|
|
|
|
compare(mlocked.m_type, ==, DL_TASK_REPLY);
|
|
eth_rec(&mlocked);
|
|
}
|
|
assert(result == OK);
|
|
|
|
result= receive(eth_port->etp_osdep.etp_task, &mess);
|
|
assert(result == OK);
|
|
assert(mess.m_type == DL_TASK_REPLY);
|
|
|
|
result= mess.DL_STAT >> 16;
|
|
assert (result == 0);
|
|
|
|
if (mess.DL_STAT)
|
|
{
|
|
#if DEBUG
|
|
{ where(); printf("calling eth_rec()\n"); }
|
|
#endif
|
|
eth_rec(&mess);
|
|
}
|
|
return OK;
|
|
}
|
|
#endif
|
|
|
|
#ifndef notdef
|
|
PUBLIC void eth_set_rec_conf (eth_port, flags)
|
|
eth_port_t *eth_port;
|
|
u32_t flags;
|
|
{
|
|
int result;
|
|
unsigned dl_flags;
|
|
message mess, repl_mess;
|
|
|
|
dl_flags= DL_NOMODE;
|
|
if (flags & NWEO_EN_BROAD)
|
|
dl_flags |= DL_BROAD_REQ;
|
|
if (flags & NWEO_EN_MULTI)
|
|
dl_flags |= DL_MULTI_REQ;
|
|
if (flags & NWEO_EN_PROMISC)
|
|
dl_flags |= DL_PROMISC_REQ;
|
|
|
|
mess.m_type= DL_INIT;
|
|
mess.DL_PORT= eth_port->etp_osdep.etp_port;
|
|
mess.DL_PROC= this_proc;
|
|
mess.DL_MODE= dl_flags;
|
|
|
|
do
|
|
{
|
|
result= send (eth_port->etp_osdep.etp_task, &mess);
|
|
if (result == ELOCKED)
|
|
/* Ethernet task is sending to this task, I hope */
|
|
{
|
|
if (receive (eth_port->etp_osdep.etp_task,
|
|
&repl_mess)< 0)
|
|
{
|
|
ip_panic(("unable to receive"));
|
|
}
|
|
|
|
compare(repl_mess.m_type, ==, DL_TASK_REPLY);
|
|
eth_rec(&repl_mess);
|
|
}
|
|
} while (result == ELOCKED);
|
|
|
|
if (result < 0)
|
|
ip_panic(("unable to send(%d)", result));
|
|
|
|
if (receive (eth_port->etp_osdep.etp_task, &repl_mess) < 0)
|
|
ip_panic(("unable to receive"));
|
|
|
|
assert (repl_mess.m_type == DL_INIT_REPLY);
|
|
if (repl_mess.m3_i1 != eth_port->etp_osdep.etp_port)
|
|
{
|
|
ip_panic(("got reply for wrong port"));
|
|
}
|
|
eth_port->etp_osdep.etp_recvconf= flags;
|
|
}
|
|
#endif
|
|
|
|
PRIVATE void write_int(eth_port)
|
|
eth_port_t *eth_port;
|
|
{
|
|
acc_t *pack;
|
|
int multicast;
|
|
u8_t *eth_dst_ptr;
|
|
|
|
pack= eth_port->etp_wr_pack;
|
|
eth_port->etp_wr_pack= NULL;
|
|
|
|
eth_dst_ptr= (u8_t *)ptr2acc_data(pack);
|
|
multicast= (*eth_dst_ptr & 1); /* low order bit indicates multicast */
|
|
if (multicast || (eth_port->etp_osdep.etp_recvconf & NWEO_EN_PROMISC))
|
|
eth_arrive(eth_port, pack, bf_bufsize(pack));
|
|
else
|
|
bf_afree(pack);
|
|
|
|
eth_restart_write(eth_port);
|
|
}
|
|
|
|
PRIVATE void read_int(eth_port, count)
|
|
eth_port_t *eth_port;
|
|
int count;
|
|
{
|
|
acc_t *pack, *cut_pack;
|
|
|
|
pack= eth_port->etp_rd_pack;
|
|
eth_port->etp_rd_pack= NULL;
|
|
|
|
cut_pack= bf_cut(pack, 0, count);
|
|
bf_afree(pack);
|
|
|
|
eth_arrive(eth_port, cut_pack, count);
|
|
|
|
eth_port->etp_flags &= ~(EPF_READ_IP|EPF_READ_SP);
|
|
setup_read(eth_port);
|
|
}
|
|
|
|
PRIVATE void setup_read(eth_port)
|
|
eth_port_t *eth_port;
|
|
{
|
|
eth_port_t *loc_port;
|
|
acc_t *pack, *pack_ptr;
|
|
message mess1, block_msg;
|
|
iovec_t *iovec;
|
|
ev_arg_t ev_arg;
|
|
int i, r;
|
|
|
|
assert(!(eth_port->etp_flags & (EPF_READ_IP|EPF_READ_SP)));
|
|
|
|
do
|
|
{
|
|
assert (!eth_port->etp_rd_pack);
|
|
|
|
iovec= eth_port->etp_osdep.etp_rd_iovec;
|
|
pack= bf_memreq (ETH_MAX_PACK_SIZE);
|
|
|
|
for (i=0, pack_ptr= pack; i<RD_IOVEC && pack_ptr;
|
|
i++, pack_ptr= pack_ptr->acc_next)
|
|
{
|
|
iovec[i].iov_addr= (vir_bytes)ptr2acc_data(pack_ptr);
|
|
iovec[i].iov_size= (vir_bytes)pack_ptr->acc_length;
|
|
}
|
|
assert (!pack_ptr);
|
|
|
|
mess1.m_type= DL_READV;
|
|
mess1.DL_PORT= eth_port->etp_osdep.etp_port;
|
|
mess1.DL_PROC= this_proc;
|
|
mess1.DL_COUNT= i;
|
|
mess1.DL_ADDR= (char *)iovec;
|
|
|
|
for (;;)
|
|
{
|
|
r= send (eth_port->etp_osdep.etp_task, &mess1);
|
|
if (r != ELOCKED)
|
|
break;
|
|
|
|
/* ethernet task is sending to this task, I hope */
|
|
r= receive(eth_port->etp_osdep.etp_task, &block_msg);
|
|
if (r < 0)
|
|
ip_panic(("unable to receive"));
|
|
|
|
loc_port= eth_port;
|
|
if (loc_port->etp_osdep.etp_port != block_msg.DL_PORT)
|
|
{
|
|
loc_port= find_port(&block_msg);
|
|
}
|
|
assert(block_msg.DL_STAT &
|
|
(DL_PACK_SEND|DL_PACK_RECV));
|
|
if (block_msg.DL_STAT & DL_PACK_SEND)
|
|
{
|
|
loc_port->etp_osdep.etp_sendrepl= block_msg;
|
|
ev_arg.ev_ptr= loc_port;
|
|
ev_enqueue(&loc_port->etp_sendev, eth_sendev,
|
|
ev_arg);
|
|
}
|
|
if (block_msg.DL_STAT & DL_PACK_RECV)
|
|
{
|
|
assert(loc_port != eth_port);
|
|
loc_port->etp_osdep.etp_recvrepl= block_msg;
|
|
ev_arg.ev_ptr= loc_port;
|
|
ev_enqueue(&loc_port->etp_osdep.etp_recvev,
|
|
eth_recvev, ev_arg);
|
|
}
|
|
}
|
|
|
|
if (r < 0)
|
|
ip_panic(("unable to send"));
|
|
|
|
r= receive (eth_port->etp_osdep.etp_task, &mess1);
|
|
if (r < 0)
|
|
ip_panic(("unable to receive"));
|
|
|
|
assert (mess1.m_type == DL_TASK_REPLY &&
|
|
mess1.DL_PORT == mess1.DL_PORT &&
|
|
mess1.DL_PROC == this_proc);
|
|
compare((mess1.DL_STAT >> 16), ==, OK);
|
|
|
|
if (mess1.DL_STAT & DL_PACK_RECV)
|
|
{
|
|
/* packet received */
|
|
pack_ptr= bf_cut(pack, 0, mess1.DL_COUNT);
|
|
bf_afree(pack);
|
|
|
|
eth_arrive(eth_port, pack_ptr, mess1.DL_COUNT);
|
|
}
|
|
else
|
|
{
|
|
/* no packet received */
|
|
eth_port->etp_rd_pack= pack;
|
|
eth_port->etp_flags |= EPF_READ_IP;
|
|
}
|
|
|
|
if (mess1.DL_STAT & DL_PACK_SEND)
|
|
{
|
|
eth_port->etp_osdep.etp_sendrepl= mess1;
|
|
ev_arg.ev_ptr= eth_port;
|
|
ev_enqueue(ð_port->etp_sendev, eth_sendev, ev_arg);
|
|
}
|
|
} while (!(eth_port->etp_flags & EPF_READ_IP));
|
|
eth_port->etp_flags |= EPF_READ_SP;
|
|
}
|
|
|
|
PRIVATE void eth_recvev(ev, ev_arg)
|
|
event_t *ev;
|
|
ev_arg_t ev_arg;
|
|
{
|
|
eth_port_t *eth_port;
|
|
message *m_ptr;
|
|
|
|
eth_port= ev_arg.ev_ptr;
|
|
assert(ev == ð_port->etp_osdep.etp_recvev);
|
|
m_ptr= ð_port->etp_osdep.etp_recvrepl;
|
|
|
|
assert(m_ptr->m_type == DL_TASK_REPLY);
|
|
assert(eth_port->etp_osdep.etp_port == m_ptr->DL_PORT);
|
|
|
|
assert(m_ptr->DL_STAT & DL_PACK_RECV);
|
|
m_ptr->DL_STAT &= ~DL_PACK_RECV;
|
|
|
|
read_int(eth_port, m_ptr->DL_COUNT);
|
|
}
|
|
|
|
PRIVATE void eth_sendev(ev, ev_arg)
|
|
event_t *ev;
|
|
ev_arg_t ev_arg;
|
|
{
|
|
eth_port_t *eth_port;
|
|
message *m_ptr;
|
|
|
|
eth_port= ev_arg.ev_ptr;
|
|
assert(ev == ð_port->etp_sendev);
|
|
m_ptr= ð_port->etp_osdep.etp_sendrepl;
|
|
|
|
assert (m_ptr->m_type == DL_TASK_REPLY);
|
|
assert(eth_port->etp_osdep.etp_port == m_ptr->DL_PORT);
|
|
|
|
assert(m_ptr->DL_STAT & DL_PACK_SEND);
|
|
m_ptr->DL_STAT &= ~DL_PACK_SEND;
|
|
|
|
/* packet is sent */
|
|
write_int(eth_port);
|
|
}
|
|
|
|
PRIVATE eth_port_t *find_port(m)
|
|
message *m;
|
|
{
|
|
eth_port_t *loc_port;
|
|
int i;
|
|
|
|
for (i=0, loc_port= eth_port_table; i<eth_conf_nr; i++, loc_port++)
|
|
{
|
|
if (loc_port->etp_osdep.etp_port == m->DL_PORT)
|
|
break;
|
|
}
|
|
assert (i<eth_conf_nr);
|
|
return loc_port;
|
|
}
|
|
|
|
/*
|
|
* $PchId: mnx_eth.c,v 1.8 1995/11/21 06:41:57 philip Exp $
|
|
*/
|