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minix/servers/inet/mnx_eth.c

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/*
inet/mnx_eth.c
Created: Jan 2, 1992 by Philip Homburg
Copyright 1995 Philip Homburg
*/
#include "inet.h"
#include <minix/ds.h>
#include <minix/safecopies.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"
THIS_FILE
static int recv_debug= 0;
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 eth_issue_send, (eth_port_t *eth_port) );
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) );
FORWARD _PROTOTYPE( void eth_restart, (eth_port_t *eth_port, int tasknr) );
FORWARD _PROTOTYPE( void send_getstat, (eth_port_t *eth_port) );
FORWARD _PROTOTYPE( int asynsend, (endpoint_t dst, message *mp) );
PUBLIC void osdep_eth_init()
{
int i, j, r, rport;
u32_t tasknr;
struct eth_conf *ecp;
eth_port_t *eth_port, *rep;
message mess;
cp_grant_id_t gid;
/* First initialize normal ethernet interfaces */
for (i= 0, ecp= eth_conf, eth_port= eth_port_table;
i<eth_conf_nr; i++, ecp++, eth_port++)
{
/* Set all grants to invalid */
for (j= 0; j<IOVEC_NR; j++)
eth_port->etp_osdep.etp_wr_iovec[j].iov_grant= -1;
eth_port->etp_osdep.etp_wr_vec_grant= -1;
for (j= 0; j<RD_IOVEC; j++)
eth_port->etp_osdep.etp_rd_iovec[j].iov_grant= -1;
eth_port->etp_osdep.etp_rd_vec_grant= -1;
eth_port->etp_osdep.etp_state= OEPS_INIT;
eth_port->etp_osdep.etp_flags= OEPF_EMPTY;
eth_port->etp_osdep.etp_stat_gid= -1;
eth_port->etp_osdep.etp_stat_buf= NULL;
if (eth_is_vlan(ecp))
continue;
/* Allocate grants */
for (j= 0; j<IOVEC_NR; j++)
{
if (cpf_getgrants(&gid, 1) != 1)
{
ip_panic((
"osdep_eth_init: cpf_getgrants failed: %d\n",
errno));
}
eth_port->etp_osdep.etp_wr_iovec[j].iov_grant= gid;
}
if (cpf_getgrants(&gid, 1) != 1)
{
ip_panic((
"osdep_eth_init: cpf_getgrants failed: %d\n",
errno));
}
eth_port->etp_osdep.etp_wr_vec_grant= gid;
for (j= 0; j<RD_IOVEC; j++)
{
if (cpf_getgrants(&gid, 1) != 1)
{
ip_panic((
"osdep_eth_init: cpf_getgrants failed: %d\n",
errno));
}
eth_port->etp_osdep.etp_rd_iovec[j].iov_grant= gid;
}
if (cpf_getgrants(&gid, 1) != 1)
{
ip_panic((
"osdep_eth_init: cpf_getgrants failed: %d\n",
errno));
}
eth_port->etp_osdep.etp_rd_vec_grant= gid;
#ifdef __minix_vmd
r= sys_findproc(ecp->ec_task, &tasknr, 0);
#else /* Minix 3 */
r= ds_retrieve_u32(ecp->ec_task, &tasknr);
if (r != OK && r != ESRCH)
{
printf("inet: ds_retrieve_u32 failed for '%s': %d\n",
ecp->ec_task, r);
}
#endif
if (r != OK)
{
/* Eventually, we expect ethernet drivers to be
* started after INET. So we always end up here. And
* the findproc can be removed.
*/
printf("eth%d: unable to find task %s: %d\n",
i, ecp->ec_task, r);
tasknr= ANY;
}
eth_port->etp_osdep.etp_port= ecp->ec_port;
eth_port->etp_osdep.etp_task= tasknr;
eth_port->etp_osdep.etp_send_ev= 0;
ev_init(&eth_port->etp_osdep.etp_recvev);
mess.m_type= DL_CONF;
mess.DL_PORT= eth_port->etp_osdep.etp_port;
mess.DL_PROC= this_proc;
mess.DL_MODE= DL_NOMODE;
if (tasknr == ANY)
r= ENXIO;
else
{
assert(eth_port->etp_osdep.etp_state == OEPS_INIT);
r= asynsend(eth_port->etp_osdep.etp_task, &mess);
if (r == OK)
eth_port->etp_osdep.etp_state= OEPS_CONF_SENT;
else
{
printf(
"osdep_eth_init: unable to send to ethernet task, error= %d\n",
r);
}
}
r= ENXIO;
sr_add_minor(if2minor(ecp->ec_ifno, ETH_DEV_OFF),
i, eth_open, eth_close, eth_read,
eth_write, eth_ioctl, eth_cancel, eth_select);
eth_port->etp_flags |= EPF_ENABLED;
eth_port->etp_vlan= 0;
eth_port->etp_vlan_port= NULL;
eth_port->etp_wr_pack= 0;
eth_port->etp_rd_pack= 0;
if (r == OK)
{
eth_port->etp_ethaddr= *(ether_addr_t *)mess.m3_ca1;
printf("osdep_eth_init: setting EPF_GOT_ADDR\n");
eth_port->etp_flags |= EPF_GOT_ADDR;
setup_read (eth_port);
}
}
/* And now come the VLANs */
for (i= 0, ecp= eth_conf, eth_port= eth_port_table;
i<eth_conf_nr; i++, ecp++, eth_port++)
{
if (!eth_is_vlan(ecp))
continue;
eth_port->etp_osdep.etp_port= ecp->ec_port;
eth_port->etp_osdep.etp_task= ANY;
ev_init(&eth_port->etp_osdep.etp_recvev);
rport= eth_port->etp_osdep.etp_port;
assert(rport >= 0 && rport < eth_conf_nr);
rep= &eth_port_table[rport];
if (!(rep->etp_flags & EPF_ENABLED))
{
printf(
"eth%d: underlying ethernet device %d not enabled",
i, rport);
continue;
}
if (rep->etp_vlan != 0)
{
printf(
"eth%d: underlying ethernet device %d is a VLAN",
i, rport);
continue;
}
if (rep->etp_flags & EPF_GOT_ADDR)
{
eth_port->etp_ethaddr= rep->etp_ethaddr;
printf("osdep_eth_init: setting EPF_GOT_ADDR\n");
eth_port->etp_flags |= EPF_GOT_ADDR;
}
sr_add_minor(if2minor(ecp->ec_ifno, ETH_DEV_OFF),
i, eth_open, eth_close, eth_read,
eth_write, eth_ioctl, eth_cancel, eth_select);
eth_port->etp_flags |= EPF_ENABLED;
eth_port->etp_vlan= ecp->ec_vlan;
eth_port->etp_vlan_port= rep;
assert(eth_port->etp_vlan != 0);
eth_port->etp_wr_pack= 0;
eth_port->etp_rd_pack= 0;
eth_reg_vlan(rep, 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;
u8_t *eth_dst_ptr;
int multicast, r;
ev_arg_t ev_arg;
assert(!no_ethWritePort);
assert(!eth_port->etp_vlan);
assert(eth_port->etp_wr_pack == NULL);
eth_port->etp_wr_pack= pack;
if (eth_port->etp_osdep.etp_state != OEPS_IDLE)
{
eth_port->etp_osdep.etp_flags |= OEPF_NEED_SEND;
return;
}
eth_issue_send(eth_port);
}
PRIVATE int notification_count;
PUBLIC void eth_rec(m)
message *m;
{
int i, r, m_type, stat;
eth_port_t *loc_port, *vlan_port;
char *drivername;
struct eth_conf *ecp;
m_type= m->m_type;
if (m_type == DL_NAME_REPLY)
{
drivername= m->m3_ca1;
printf("eth_rec: got name: %s\n", drivername);
notification_count= 0;
/* Re-init ethernet interfaces */
for (i= 0, ecp= eth_conf, loc_port= eth_port_table;
i<eth_conf_nr; i++, ecp++, loc_port++)
{
if (eth_is_vlan(ecp))
continue;
if (strcmp(ecp->ec_task, drivername) != 0)
{
/* Wrong driver */
continue;
}
eth_restart(loc_port, m->m_source);
}
return;
}
assert(m_type == DL_CONF_REPLY || m_type == DL_TASK_REPLY ||
m_type == DL_STAT_REPLY);
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)
{
printf("eth_rec: bad port %d in message type 0x%x from %d\n",
m->DL_PORT, m_type, m->m_source);
return;
}
if (loc_port->etp_osdep.etp_state == OEPS_CONF_SENT)
{
if (m_type == DL_TASK_REPLY)
{
stat= m->DL_STAT & 0xffff;
if (stat & DL_PACK_SEND)
write_int(loc_port);
if (stat & DL_PACK_RECV)
read_int(loc_port, m->DL_COUNT);
return;
}
if (m_type != DL_CONF_REPLY)
{
printf(
"eth_rec: got bad message type 0x%x from %d in CONF state\n",
m_type, m->m_source);
return;
}
r= m->m3_i1;
if (r == ENXIO)
{
printf(
"eth_rec(conf_reply): no ethernet device at task=%d,port=%d\n",
loc_port->etp_osdep.etp_task,
loc_port->etp_osdep.etp_port);
return;
}
if (r < 0)
{
ip_panic(("eth_rec: DL_INIT returned error %d\n", r));
return;
}
loc_port->etp_osdep.etp_flags &= ~OEPF_NEED_CONF;
loc_port->etp_osdep.etp_state= OEPS_IDLE;
loc_port->etp_flags |= EPF_ENABLED;
loc_port->etp_ethaddr= *(ether_addr_t *)m->m3_ca1;
if (!(loc_port->etp_flags & EPF_GOT_ADDR))
{
loc_port->etp_flags |= EPF_GOT_ADDR;
printf("eth_rec: calling eth_restart_ioctl\n");
eth_restart_ioctl(loc_port);
/* Also update any VLANs on this device */
for (i=0, vlan_port= eth_port_table; i<eth_conf_nr;
i++, vlan_port++)
{
if (!(vlan_port->etp_flags & EPF_ENABLED))
continue;
if (vlan_port->etp_vlan_port != loc_port)
continue;
vlan_port->etp_ethaddr= loc_port->etp_ethaddr;
vlan_port->etp_flags |= EPF_GOT_ADDR;
eth_restart_ioctl(vlan_port);
}
}
if (!(loc_port->etp_flags & EPF_READ_IP))
setup_read (loc_port);
if (loc_port->etp_osdep.etp_flags & OEPF_NEED_SEND)
{
printf("eth_rec(conf): OEPF_NEED_SEND is set\n");
}
if (loc_port->etp_osdep.etp_flags & OEPF_NEED_RECV)
{
printf("eth_rec(conf): OEPF_NEED_RECV is set\n");
}
if (loc_port->etp_osdep.etp_flags & OEPF_NEED_STAT)
{
printf("eth_rec(conf): OEPF_NEED_STAT is set\n");
}
return;
}
if (loc_port->etp_osdep.etp_state == OEPS_GETSTAT_SENT)
{
if (m_type != DL_STAT_REPLY)
{
printf(
"eth_rec: got bad message type 0x%x from %d in GETSTAT state\n",
m_type, m->m_source);
return;
}
r= m->DL_STAT;
if (r != OK)
{
ip_warning(("eth_rec: DL_STAT returned error %d\n",
r));
return;
}
loc_port->etp_osdep.etp_state= OEPS_IDLE;
loc_port->etp_osdep.etp_flags &= ~OEPF_NEED_STAT;
assert(loc_port->etp_osdep.etp_stat_gid != -1);
cpf_revoke(loc_port->etp_osdep.etp_stat_gid);
loc_port->etp_osdep.etp_stat_gid= -1;
loc_port->etp_osdep.etp_stat_buf= NULL;
/* Finish ioctl */
assert(loc_port->etp_flags & EPF_GOT_ADDR);
eth_restart_ioctl(loc_port);
if (loc_port->etp_osdep.etp_flags & OEPF_NEED_SEND)
{
printf("eth_rec(stat): OEPF_NEED_SEND is set\n");
}
if (loc_port->etp_osdep.etp_flags & OEPF_NEED_RECV)
{
printf("eth_rec(stat): OEPF_NEED_RECV is set\n");
}
if (loc_port->etp_osdep.etp_flags & OEPF_NEED_CONF)
{
printf("eth_rec(stat): OEPF_NEED_CONF is set\n");
}
#if 0
if (loc_port->etp_osdep.etp_state == OEPS_IDLE &&
(loc_port->etp_osdep.etp_flags & OEPF_NEED_CONF))
{
eth_set_rec_conf(loc_port,
loc_port->etp_osdep.etp_recvconf);
}
#endif
return;
}
assert(loc_port->etp_osdep.etp_state == OEPS_IDLE ||
loc_port->etp_osdep.etp_state == OEPS_RECV_SENT ||
loc_port->etp_osdep.etp_state == OEPS_SEND_SENT ||
(printf("etp_state = %d\n", loc_port->etp_osdep.etp_state), 0));
loc_port->etp_osdep.etp_state= OEPS_IDLE;
#if 0 /* Ethernet driver is not trusted */
set_time (m->DL_CLCK);
#endif
stat= m->DL_STAT & 0xffff;
#if 0
if (!(stat & (DL_PACK_SEND|DL_PACK_RECV)))
printf("eth_rec: neither DL_PACK_SEND nor DL_PACK_RECV\n");
#endif
if (stat & DL_PACK_SEND)
write_int(loc_port);
if (stat & DL_PACK_RECV)
{
if (recv_debug)
{
printf("eth_rec: eth%d got DL_PACK_RECV\n",
m->DL_PORT);
}
read_int(loc_port, m->DL_COUNT);
}
if (loc_port->etp_osdep.etp_state == OEPS_IDLE &&
loc_port->etp_osdep.etp_flags & OEPF_NEED_SEND)
{
loc_port->etp_osdep.etp_flags &= ~OEPF_NEED_SEND;
if (loc_port->etp_wr_pack)
eth_issue_send(loc_port);
}
if (loc_port->etp_osdep.etp_state == OEPS_IDLE &&
(loc_port->etp_osdep.etp_flags & OEPF_NEED_RECV))
{
printf("eth_rec: OEPF_NEED_RECV is set\n");
loc_port->etp_osdep.etp_flags &= ~OEPF_NEED_RECV;
if (!(loc_port->etp_flags & EPF_READ_IP))
setup_read (loc_port);
}
if (loc_port->etp_osdep.etp_flags & OEPF_NEED_CONF)
{
printf("eth_rec: OEPF_NEED_CONF is set\n");
}
if (loc_port->etp_osdep.etp_state == OEPS_IDLE &&
(loc_port->etp_osdep.etp_flags & OEPF_NEED_STAT))
{
send_getstat(loc_port);
}
}
PUBLIC void eth_check_drivers(m)
message *m;
{
int i, r, tasknr;
tasknr= m->m_source;
if (notification_count < 100)
{
notification_count++;
printf("eth_check_drivers: got a notification #%d from %d\n",
notification_count, tasknr);
}
m->m_type= DL_GETNAME;
r= asynsend(tasknr, m);
if (r != OK)
{
printf("eth_check_drivers: asynsend to %d failed: %d\n",
tasknr, r);
return;
}
}
PUBLIC int eth_get_stat(eth_port, eth_stat)
eth_port_t *eth_port;
eth_stat_t *eth_stat;
{
int r;
cp_grant_id_t gid;
assert(!eth_port->etp_vlan);
if (eth_port->etp_osdep.etp_flags & OEPF_NEED_STAT)
ip_panic(( "eth_get_stat: getstat already in progress" ));
gid= cpf_grant_direct(eth_port->etp_osdep.etp_task,
(vir_bytes)eth_stat, sizeof(*eth_stat), CPF_WRITE);
if (gid == -1)
{
ip_panic(( "eth_get_stat: cpf_grant_direct failed: %d\n",
errno));
}
assert(eth_port->etp_osdep.etp_stat_gid == -1);
eth_port->etp_osdep.etp_stat_gid= gid;
eth_port->etp_osdep.etp_stat_buf= eth_stat;
if (eth_port->etp_osdep.etp_state != OEPS_IDLE)
{
eth_port->etp_osdep.etp_flags |= OEPF_NEED_STAT;
return SUSPEND;
}
send_getstat(eth_port);
return SUSPEND;
}
PUBLIC void eth_set_rec_conf (eth_port, flags)
eth_port_t *eth_port;
u32_t flags;
{
int r;
unsigned dl_flags;
message mess, repl_mess;
assert(!eth_port->etp_vlan);
if (!(eth_port->etp_flags & EPF_GOT_ADDR))
{
/* We have never seen the device. */
printf("eth_set_rec_conf: waiting for device to appear\n");
return;
}
if (eth_port->etp_osdep.etp_state != OEPS_IDLE)
{
printf(
"eth_set_rec_conf: setting OEPF_NEED_CONF, state = %d\n",
eth_port->etp_osdep.etp_state);
eth_port->etp_osdep.etp_flags |= OEPF_NEED_CONF;
return;
}
eth_port->etp_osdep.etp_recvconf= flags;
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_CONF;
mess.DL_PORT= eth_port->etp_osdep.etp_port;
mess.DL_PROC= this_proc;
mess.DL_MODE= dl_flags;
assert(eth_port->etp_osdep.etp_state == OEPS_IDLE);
r= asynsend(eth_port->etp_osdep.etp_task, &mess);
eth_port->etp_osdep.etp_state= OEPS_CONF_SENT;
if (r < 0)
{
printf("eth_set_rec_conf: asynsend to %d failed: %d\n",
eth_port->etp_osdep.etp_task, r);
return;
}
}
PRIVATE void eth_issue_send(eth_port)
eth_port_t *eth_port;
{
int i, r, pack_size;
acc_t *pack, *pack_ptr;
iovec_s_t *iovec;
message m;
iovec= eth_port->etp_osdep.etp_wr_iovec;
pack= eth_port->etp_wr_pack;
pack_size= 0;
for (i=0, pack_ptr= pack; i<IOVEC_NR && pack_ptr; i++,
pack_ptr= pack_ptr->acc_next)
{
r= cpf_setgrant_direct(iovec[i].iov_grant,
eth_port->etp_osdep.etp_task,
(vir_bytes)ptr2acc_data(pack_ptr),
(vir_bytes)pack_ptr->acc_length,
CPF_READ);
if (r != 0)
{
ip_panic((
"eth_write_port: cpf_setgrant_direct failed: %d\n",
errno));
}
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)
{
r= cpf_setgrant_direct(iovec[i].iov_grant,
eth_port->etp_osdep.etp_task,
(vir_bytes)ptr2acc_data(pack_ptr),
(vir_bytes)pack_ptr->acc_length,
CPF_READ);
if (r != 0)
{
ip_panic((
"eth_write_port: cpf_setgrant_direct failed: %d\n",
errno));
}
pack_size += iovec[i].iov_size= pack_ptr->acc_length;
}
}
assert (i< IOVEC_NR);
assert (pack_size >= ETH_MIN_PACK_SIZE);
r= cpf_setgrant_direct(eth_port->etp_osdep.etp_wr_vec_grant,
eth_port->etp_osdep.etp_task,
(vir_bytes)iovec,
(vir_bytes)(i * sizeof(iovec[0])),
CPF_READ);
if (r != 0)
{
ip_panic((
"eth_write_port: cpf_setgrant_direct failed: %d\n",
errno));
}
m.DL_COUNT= i;
m.DL_GRANT= eth_port->etp_osdep.etp_wr_vec_grant;
m.m_type= DL_WRITEV_S;
m.DL_PORT= eth_port->etp_osdep.etp_port;
m.DL_PROC= this_proc;
m.DL_MODE= DL_NOMODE;
assert(eth_port->etp_osdep.etp_state == OEPS_IDLE);
r= asynsend(eth_port->etp_osdep.etp_task, &m);
if (r < 0)
{
printf("eth_issue_send: send to %d failed: %d\n",
eth_port->etp_osdep.etp_task, r);
return;
}
eth_port->etp_osdep.etp_state= OEPS_SEND_SENT;
}
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;
if (pack == NULL)
{
printf("write_int: strange no packet on eth port %d\n",
eth_port-eth_port_table);
eth_restart_write(eth_port);
return;
}
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))
{
assert(!no_ethWritePort);
no_ethWritePort= 1;
eth_arrive(eth_port, pack, bf_bufsize(pack));
assert(no_ethWritePort);
no_ethWritePort= 0;
}
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;
if (count < ETH_MIN_PACK_SIZE)
{
printf("mnx_eth`read_int: packet size too small (%d)\n",
count);
bf_afree(pack);
}
else if (count > ETH_MAX_PACK_SIZE_TAGGED)
{
printf("mnx_eth`read_int: packet size too big (%d)\n",
count);
bf_afree(pack);
}
else
{
cut_pack= bf_cut(pack, 0, count);
bf_afree(pack);
assert(!no_ethWritePort);
no_ethWritePort= 1;
eth_arrive(eth_port, cut_pack, count);
assert(no_ethWritePort);
no_ethWritePort= 0;
}
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_s_t *iovec;
ev_arg_t ev_arg;
int i, r;
assert(!eth_port->etp_vlan);
assert(!(eth_port->etp_flags & (EPF_READ_IP|EPF_READ_SP)));
if (eth_port->etp_osdep.etp_state != OEPS_IDLE)
{
printf("setup_read: setting OEPF_NEED_RECV\n");
eth_port->etp_osdep.etp_flags |= OEPF_NEED_RECV;
return;
}
assert (!eth_port->etp_rd_pack);
iovec= eth_port->etp_osdep.etp_rd_iovec;
pack= bf_memreq (ETH_MAX_PACK_SIZE_TAGGED);
for (i=0, pack_ptr= pack; i<RD_IOVEC && pack_ptr;
i++, pack_ptr= pack_ptr->acc_next)
{
r= cpf_setgrant_direct(iovec[i].iov_grant,
eth_port->etp_osdep.etp_task,
(vir_bytes)ptr2acc_data(pack_ptr),
(vir_bytes)pack_ptr->acc_length,
CPF_WRITE);
if (r != 0)
{
ip_panic((
"mnx_eth`setup_read: cpf_setgrant_direct failed: %d\n",
errno));
}
iovec[i].iov_size= (vir_bytes)pack_ptr->acc_length;
}
assert (!pack_ptr);
r= cpf_setgrant_direct(eth_port->etp_osdep.etp_rd_vec_grant,
eth_port->etp_osdep.etp_task,
(vir_bytes)iovec,
(vir_bytes)(i * sizeof(iovec[0])),
CPF_READ);
if (r != 0)
{
ip_panic((
"mnx_eth`setup_read: cpf_setgrant_direct failed: %d\n",
errno));
}
mess1.m_type= DL_READV_S;
mess1.DL_PORT= eth_port->etp_osdep.etp_port;
mess1.DL_PROC= this_proc;
mess1.DL_COUNT= i;
mess1.DL_GRANT= eth_port->etp_osdep.etp_rd_vec_grant;
assert(eth_port->etp_osdep.etp_state == OEPS_IDLE);
r= asynsend(eth_port->etp_osdep.etp_task, &mess1);
eth_port->etp_osdep.etp_state= OEPS_RECV_SENT;
if (r < 0)
{
printf(
"mnx_eth`setup_read: asynsend to %d failed: %d\n",
eth_port->etp_osdep.etp_task, r);
}
eth_port->etp_rd_pack= pack;
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 == &eth_port->etp_osdep.etp_recvev);
m_ptr= &eth_port->etp_osdep.etp_recvrepl;
assert(m_ptr->m_type == DL_TASK_REPLY);
assert(eth_port->etp_osdep.etp_port == m_ptr->DL_PORT &&
eth_port->etp_osdep.etp_task == m_ptr->m_source);
assert(m_ptr->DL_STAT & DL_PACK_RECV);
m_ptr->DL_STAT &= ~DL_PACK_RECV;
if (recv_debug)
{
printf("eth_recvev: eth%d got DL_PACK_RECV\n", m_ptr->DL_PORT);
}
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 == &eth_port->etp_sendev);
m_ptr= &eth_port->etp_osdep.etp_sendrepl;
assert (m_ptr->m_type == DL_TASK_REPLY);
assert(eth_port->etp_osdep.etp_port == m_ptr->DL_PORT &&
eth_port->etp_osdep.etp_task == m_ptr->m_source);
assert(m_ptr->DL_STAT & DL_PACK_SEND);
m_ptr->DL_STAT &= ~DL_PACK_SEND;
assert(eth_port->etp_osdep.etp_send_ev);
eth_port->etp_osdep.etp_send_ev= 0;
/* 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 &&
loc_port->etp_osdep.etp_task == m->m_source)
break;
}
assert (i<eth_conf_nr);
return loc_port;
}
static void eth_restart(eth_port, tasknr)
eth_port_t *eth_port;
int tasknr;
{
int i, r;
unsigned flags, dl_flags;
cp_grant_id_t gid;
message mess;
printf("eth_restart: restarting eth%d, task %d, port %d\n",
eth_port-eth_port_table, tasknr,
eth_port->etp_osdep.etp_port);
if (eth_port->etp_osdep.etp_task == tasknr)
{
printf(
"eth_restart: task number did not change. Aborting restart\n");
return;
}
eth_port->etp_osdep.etp_task= tasknr;
switch(eth_port->etp_osdep.etp_state)
{
case OEPS_CONF_SENT:
case OEPS_RECV_SENT:
case OEPS_SEND_SENT:
/* We can safely ignore the pending CONF, RECV, and SEND
* requests.
*/
eth_port->etp_osdep.etp_state= OEPS_IDLE;
break;
case OEPS_GETSTAT_SENT:
/* Set the OEPF_NEED_STAT to trigger a new request */
eth_port->etp_osdep.etp_flags |= OEPF_NEED_STAT;
eth_port->etp_osdep.etp_state= OEPS_IDLE;
break;
}
/* If there is a pending GETSTAT request then we have to create a
* new grant.
*/
if (eth_port->etp_osdep.etp_flags & OEPF_NEED_STAT)
{
assert(eth_port->etp_osdep.etp_stat_gid != -1);
cpf_revoke(eth_port->etp_osdep.etp_stat_gid);
gid= cpf_grant_direct(eth_port->etp_osdep.etp_task,
(vir_bytes)eth_port->etp_osdep.etp_stat_buf,
sizeof(*eth_port->etp_osdep.etp_stat_buf), CPF_WRITE);
if (gid == -1)
{
ip_panic((
"eth_restart: cpf_grant_direct failed: %d\n",
errno));
}
eth_port->etp_osdep.etp_stat_gid= gid;
}
flags= eth_port->etp_osdep.etp_recvconf;
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_CONF;
mess.DL_PORT= eth_port->etp_osdep.etp_port;
mess.DL_PROC= this_proc;
mess.DL_MODE= dl_flags;
compare(eth_port->etp_osdep.etp_state, ==, OEPS_IDLE);
r= asynsend(eth_port->etp_osdep.etp_task, &mess);
if (r<0)
{
printf(
"eth_restart: send to ethernet task %d failed: %d\n",
eth_port->etp_osdep.etp_task, r);
return;
}
eth_port->etp_osdep.etp_state= OEPS_CONF_SENT;
if (eth_port->etp_wr_pack)
{
bf_afree(eth_port->etp_wr_pack);
eth_port->etp_wr_pack= NULL;
eth_restart_write(eth_port);
}
if (eth_port->etp_rd_pack)
{
bf_afree(eth_port->etp_rd_pack);
eth_port->etp_rd_pack= NULL;
eth_port->etp_flags &= ~(EPF_READ_IP|EPF_READ_SP);
}
}
PRIVATE void send_getstat(eth_port)
eth_port_t *eth_port;
{
int r;
message mess;
mess.m_type= DL_GETSTAT_S;
mess.DL_PORT= eth_port->etp_osdep.etp_port;
mess.DL_PROC= this_proc;
mess.DL_GRANT= eth_port->etp_osdep.etp_stat_gid;
assert(eth_port->etp_osdep.etp_state == OEPS_IDLE);
r= asynsend(eth_port->etp_osdep.etp_task, &mess);
eth_port->etp_osdep.etp_state= OEPS_GETSTAT_SENT;
if (r != OK)
ip_panic(( "eth_get_stat: asynsend failed: %d", r));
}
PRIVATE asynmsg_t *msgtable= NULL;
PRIVATE size_t msgtable_n= 0;
PRIVATE int asynsend(dst, mp)
endpoint_t dst;
message *mp;
{
int i;
unsigned flags;
if (msgtable == NULL)
{
printf("asynsend: allocating msg table\n");
msgtable_n= 5;
msgtable= malloc(msgtable_n * sizeof(msgtable[0]));
for (i= 0; i<msgtable_n; i++)
msgtable[i].flags= AMF_EMPTY;
}
/* Find slot in table */
for (i= 0; i<msgtable_n; i++)
{
flags= msgtable[i].flags;
if ((flags & (AMF_VALID|AMF_DONE)) == (AMF_VALID|AMF_DONE))
{
if (msgtable[i].result != OK)
{
printf(
"asynsend: found completed entry %d with error %d\n",
i, msgtable[i].result);
}
break;
}
if (flags == AMF_EMPTY)
break;
}
if (i >= msgtable_n)
ip_panic(( "asynsend: should resize table" ));
msgtable[i].dst= dst;
msgtable[i].msg= *mp;
msgtable[i].flags= AMF_VALID; /* Has to be last. The kernel
* scans this table while we are
* sleeping.
*/
/* Tell the kernel to rescan the table */
return senda(msgtable, msgtable_n);
}
/*
* $PchId: mnx_eth.c,v 1.16 2005/06/28 14:24:37 philip Exp $
*/
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