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Prelim commit for ethernet driver crash recovery.

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This commit is contained in:
Philip Homburg 2005-10-21 11:51:45 +00:00
parent f0985a4e97
commit 724813fdce
6 changed files with 163 additions and 8 deletions
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37
drivers/fxp/fxp.c
View file

@ -201,6 +201,7 @@ static fxp_t fxp_table[FXP_PORT_NR];
static int fxp_tasknr= ANY;
static u16_t eth_ign_proto;
static tmra_ut fxp_watchdog;
static char *progname;
extern int errno;
@ -231,6 +232,7 @@ _PROTOTYPE( static void fxp_ru_ptr_cmd, (fxp_t *fp, int cmd,
phys_bytes bus_addr, int check_idle) );
_PROTOTYPE( static void fxp_restart_ru, (fxp_t *fp) );
_PROTOTYPE( static void fxp_getstat, (message *mp) );
_PROTOTYPE( static void fxp_getname, (message *mp) );
_PROTOTYPE( static int fxp_handler, (fxp_t *fp) );
_PROTOTYPE( static void fxp_check_ints, (fxp_t *fp) );
_PROTOTYPE( static void fxp_watchdog_f, (timer_t *tp) );
@ -255,16 +257,20 @@ _PROTOTYPE( static void do_outl, (port_t port, u32_t v) );
/*===========================================================================*
* main *
*===========================================================================*/
int main(void)
int main(int argc, char *argv[])
{
message m;
int i, r;
int i, r, tasknr;
fxp_t *fp;
long v;
if ((fxp_tasknr= getprocnr())<0)
panic("FXP", "couldn't get proc nr", errno);
if (argc < 1)
panic("FXP", "A head which at this time has no name", NO_NUM);
(progname=strrchr(argv[0],'/')) ? progname++ : (progname=argv[0]);
v= 0;
#if 0
(void) env_parse("ETH_IGN_PROTO", "x", 0, &v, 0x0000L, 0xFFFFL);
@ -277,6 +283,13 @@ int main(void)
fxp_init_buf(fp);
#endif
/* Try to notify inet that we are present (again) */
r = findproc("inet", &tasknr);
if (r == OK)
notify(tasknr);
else
printf("fxp: cannot find proc number for inet: %d\n", r);
while (TRUE)
{
if ((r= receive(ANY, &m)) != OK)
@ -292,6 +305,7 @@ int main(void)
case DL_READV: fxp_readv(&m, FALSE, TRUE); break;
case DL_INIT: fxp_init(&m); break;
case DL_GETSTAT: fxp_getstat(&m); break;
case DL_GETNAME: fxp_getname(&m); break;
case HARD_INT:
for (i= 0, fp= &fxp_table[0]; i<FXP_PORT_NR; i++, fp++)
{
@ -1571,6 +1585,23 @@ message *mp;
reply(fp, OK, FALSE);
}
/*===========================================================================*
* fxp_getname *
*===========================================================================*/
static void fxp_getname(mp)
message *mp;
{
int r;
strncpy(mp->DL_NAME, progname, sizeof(mp->DL_NAME));
mp->DL_NAME[sizeof(mp->DL_NAME)-1]= '\0';
mp->m_type= DL_NAME_REPLY;
r= send(mp->m_source, mp);
if (r != OK)
panic("FXP", "fxp_getname: send failed: %d\n", r);
}
/*===========================================================================*
* fxp_handler *
*===========================================================================*/
@ -2417,7 +2448,7 @@ static void micro_delay(unsigned long usecs)
static u8_t do_inb(port_t port)
{
int r;
u8_t value;
u32_t value;
r= sys_inb(port, &value);
if (r != OK)

3
include/minix/com.h
View file

@ -150,10 +150,12 @@
#define DL_INIT (DL_RQ_BASE + 7)
#define DL_STOP (DL_RQ_BASE + 8)
#define DL_GETSTAT (DL_RQ_BASE + 9)
#define DL_GETNAME (DL_RQ_BASE +10)
/* Message type for data link layer replies. */
#define DL_INIT_REPLY (DL_RS_BASE + 20)
#define DL_TASK_REPLY (DL_RS_BASE + 21)
#define DL_NAME_REPLY (DL_RS_BASE + 22)
/* Field names for data link layer messages. */
#define DL_PORT m2_i1
@ -163,6 +165,7 @@
#define DL_CLCK m2_l2
#define DL_ADDR m2_p1
#define DL_STAT m2_l1
#define DL_NAME m3_ca1
/* Bits in 'DL_STAT' field of DL replies. */
# define DL_PACK_SEND 0x01

16
servers/inet/inet.c
View file

@ -242,15 +242,21 @@ PUBLIC void main()
#else /* Minix 3 */
else if (mq->mq_mess.m_type == SYN_ALARM)
{
clck_tick(&mq->mq_mess);
mq_free(mq);
clck_tick(&mq->mq_mess);
mq_free(mq);
}
else if (mq->mq_mess.m_type == SYS_SIG)
{
/* signaled */
/* probably SIGTERM */
mq_free(mq);
/* signaled */
/* probably SIGTERM */
mq_free(mq);
}
else if (mq->mq_mess.m_type & NOTIFY_MESSAGE)
{
/* A driver is (re)started. */
eth_check_drivers(&mq->mq_mess);
mq_free(mq);
}
#endif
else
{

113
servers/inet/mnx_eth.c
View file

@ -28,6 +28,7 @@ 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) );
PUBLIC void osdep_eth_init()
{
@ -344,6 +345,53 @@ message *m;
}
}
PUBLIC void eth_check_drivers(m)
message *m;
{
int i, r, tasknr;
struct eth_conf *ecp;
eth_port_t *eth_port;
char *drivername;
tasknr= m->m_source;
printf("eth_check_drivers: got a notification from %d\n", tasknr);
m->m_type= DL_GETNAME;
r= sendrec(tasknr, m);
if (r != OK)
{
printf("eth_check_drivers: sendrec to %d failed: %d\n",
tasknr, r);
return;
}
if (m->m_type != DL_NAME_REPLY)
{
printf(
"eth_check_drivers: got bad getname reply (%d) from %d\n",
m->m_type, tasknr);
return;
}
drivername= m->m3_ca1;
printf("eth_check_drivers: got name: %s\n", drivername);
/* Re-init ethernet interfaces */
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;
if (strcmp(ecp->ec_task, drivername) != 0)
{
/* Wrong driver */
continue;
}
eth_restart(eth_port, tasknr);
}
}
PUBLIC int eth_get_stat(eth_port, eth_stat)
eth_port_t *eth_port;
eth_stat_t *eth_stat;
@ -410,6 +458,7 @@ u32_t flags;
mess.DL_PORT= eth_port->etp_osdep.etp_port;
mess.DL_PROC= this_proc;
mess.DL_MODE= dl_flags;
eth_port->etp_osdep.etp_dl_flags= dl_flags;
do
{
@ -683,6 +732,70 @@ message *m;
return loc_port;
}
static void eth_restart(eth_port, tasknr)
eth_port_t *eth_port;
int tasknr;
{
int r;
message mess;
#if 0
int i, r, rport;
struct eth_conf *ecp;
eth_port_t *rep;
#endif
printf("eth_restart: restarting eth%d, task %d, port %d\n",
eth_port-eth_port_table, tasknr,
eth_port->etp_osdep.etp_port);
eth_port->etp_osdep.etp_task= tasknr;
mess.m_type= DL_INIT;
mess.DL_PORT= eth_port->etp_osdep.etp_port;
mess.DL_PROC= this_proc;
mess.DL_MODE= eth_port->etp_osdep.etp_dl_flags;
r= send(eth_port->etp_osdep.etp_task, &mess);
if (r<0)
{
printf(
"osdep_eth_init: unable to send to ethernet task, error= %d\n",
r);
return;
}
if (receive(eth_port->etp_osdep.etp_task, &mess)<0)
ip_panic(("unable to receive"));
if (mess.m3_i1 == ENXIO)
{
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);
return;
}
if (mess.m3_i1 < 0)
ip_panic(("osdep_eth_init: DL_INIT returned error %d\n",
mess.m3_i1));
if (mess.m3_i1 != eth_port->etp_osdep.etp_port)
{
ip_panic((
"osdep_eth_init: got reply for wrong port (got %d, expected %d)\n",
mess.m3_i1, eth_port->etp_osdep.etp_port));
}
eth_port->etp_ethaddr= *(ether_addr_t *)mess.m3_ca1;
eth_port->etp_flags |= EPF_ENABLED;
if (eth_port->etp_wr_pack)
ip_panic(("eth_restart: should clear etp_wr_pack\n"));
if (eth_port->etp_rd_pack)
ip_panic(("eth_restart: should clear etp_rd_pack\n"));
setup_read (eth_port);
}
/*
* $PchId: mnx_eth.c,v 1.16 2005/06/28 14:24:37 philip Exp $
*/

1
servers/inet/osdep_eth.h
View file

@ -19,6 +19,7 @@ typedef struct osdep_eth_port
int etp_task;
int etp_port;
int etp_recvconf;
unsigned etp_dl_flags;
iovec_t etp_wr_iovec[IOVEC_NR];
iovec_t etp_rd_iovec[RD_IOVEC];
event_t etp_recvev;

1
servers/inet/proto.h
View file

@ -13,6 +13,7 @@ _PROTOTYPE( void clck_tick, (message *mess) );
/* mnx_eth.c */
_PROTOTYPE( void eth_rec, (message *m) );
_PROTOTYPE( void eth_check_drivers, (message *m) );
/* sr.c */