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Add yet more bulletproofing. This is to guard against the case that

Browse source 
ndis_init_nic() works one during attach, but fails later. Many things
will blow up if ndis_init_nic() fails and we aren't careful.
This commit is contained in:
Bill Paul 2004-02-11 21:53:40 +00:00
parent 23350aaf89
commit 31d5c7fd4d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=125718
2 changed files with 55 additions and 33 deletions
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83
sys/compat/ndis/kern_ndis.c
View file

@ -720,7 +720,7 @@ ndis_return_packet(buf, arg)
sc = p->np_softc;
returnfunc = sc->ndis_chars.nmc_return_packet_func;
adapter = sc->ndis_block.nmb_miniportadapterctx;
if (returnfunc != NULL)
if (adapter != NULL)
returnfunc(adapter, p);
return;
@ -988,10 +988,12 @@ ndis_set_info(arg, oid, buf, buflen)
int error;
sc = arg;
NDIS_LOCK(sc);
setfunc = sc->ndis_chars.nmc_setinfo_func;
adapter = sc->ndis_block.nmb_miniportadapterctx;
NDIS_UNLOCK(sc);
if (adapter == NULL)
if (adapter == NULL || setfunc == NULL)
return(ENXIO);
rval = setfunc(adapter, oid, buf, *buflen,
@ -1043,6 +1045,8 @@ ndis_send_packets(arg, packets, cnt)
sc = arg;
adapter = sc->ndis_block.nmb_miniportadapterctx;
if (adapter == NULL)
return(ENXIO);
sendfunc = sc->ndis_chars.nmc_sendmulti_func;
senddonefunc = sc->ndis_block.nmb_senddone_func;
sendfunc(adapter, packets, cnt);
@ -1076,6 +1080,8 @@ ndis_send_packet(arg, packet)
sc = arg;
adapter = sc->ndis_block.nmb_miniportadapterctx;
if (adapter == NULL)
return(ENXIO);
sendfunc = sc->ndis_chars.nmc_sendsingle_func;
senddonefunc = sc->ndis_block.nmb_senddone_func;
@ -1157,13 +1163,12 @@ ndis_reset_nic(arg)
sc = arg;
ifp = &sc->arpcom.ac_if;
NDIS_LOCK(sc);
adapter = sc->ndis_block.nmb_miniportadapterctx;
if (adapter == NULL)
return(EIO);
resetfunc = sc->ndis_chars.nmc_reset_func;
if (resetfunc == NULL)
return(EINVAL);
NDIS_UNLOCK(sc);
if (adapter == NULL || resetfunc == NULL)
return(EIO);
resetfunc(&addressing_reset, adapter);
@ -1182,16 +1187,13 @@ ndis_halt_nic(arg)
sc = arg;
ifp = &sc->arpcom.ac_if;
NDIS_LOCK(sc);
adapter = sc->ndis_block.nmb_miniportadapterctx;
if (adapter == NULL)
if (adapter == NULL) {
NDIS_UNLOCK(sc);
return(EIO);
haltfunc = sc->ndis_chars.nmc_halt_func;
if (haltfunc == NULL)
return(EINVAL);
haltfunc(adapter);
}
/*
* The adapter context is only valid after the init
@ -1199,8 +1201,14 @@ ndis_halt_nic(arg)
* halt handler has been called.
*/
sc->ndis_block.nmb_miniportadapterctx = NULL;
haltfunc = sc->ndis_chars.nmc_halt_func;
NDIS_UNLOCK(sc);
haltfunc(adapter);
NDIS_LOCK(sc);
sc->ndis_block.nmb_miniportadapterctx = NULL;
NDIS_UNLOCK(sc);
/* Clobber all the timers in case the driver left one running. */
while (!TAILQ_EMPTY(&sc->ndis_block.nmb_timerlist)) {
@ -1222,13 +1230,12 @@ ndis_shutdown_nic(arg)
__stdcall ndis_shutdown_handler shutdownfunc;
sc = arg;
NDIS_LOCK(sc);
adapter = sc->ndis_block.nmb_miniportadapterctx;
if (adapter == NULL)
return(EIO);
shutdownfunc = sc->ndis_chars.nmc_shutdown_handler;
if (shutdownfunc == NULL)
return(EINVAL);
NDIS_UNLOCK(sc);
if (adapter == NULL || shutdownfunc == NULL)
return(EIO);
if (sc->ndis_chars.nmc_rsvd0 == NULL)
shutdownfunc(adapter);
@ -1256,8 +1263,10 @@ ndis_init_nic(arg)
return(EINVAL);
sc = arg;
NDIS_LOCK(sc);
block = &sc->ndis_block;
initfunc = sc->ndis_chars.nmc_init_func;
NDIS_UNLOCK(sc);
TAILQ_INIT(&block->nmb_timerlist);
@ -1273,9 +1282,9 @@ ndis_init_nic(arg)
* If the init failed, none of these will work.
*/
if (status != NDIS_STATUS_SUCCESS) {
bzero((char *)&sc->ndis_chars,
sizeof(ndis_miniport_characteristics));
NDIS_LOCK(sc);
sc->ndis_block.nmb_miniportadapterctx = NULL;
NDIS_UNLOCK(sc);
return(ENXIO);
}
@ -1291,11 +1300,11 @@ ndis_enable_intr(arg)
__stdcall ndis_enable_interrupts_handler intrenbfunc;
sc = arg;
NDIS_LOCK(sc);
adapter = sc->ndis_block.nmb_miniportadapterctx;
if (adapter == NULL)
return;
intrenbfunc = sc->ndis_chars.nmc_enable_interrupts_func;
if (intrenbfunc == NULL)
NDIS_UNLOCK(sc);
if (adapter == NULL || intrenbfunc == NULL)
return;
intrenbfunc(adapter);
@ -1311,12 +1320,12 @@ ndis_disable_intr(arg)
__stdcall ndis_disable_interrupts_handler intrdisfunc;
sc = arg;
NDIS_LOCK(sc);
adapter = sc->ndis_block.nmb_miniportadapterctx;
if (adapter == NULL)
return;
intrdisfunc = sc->ndis_chars.nmc_disable_interrupts_func;
if (intrdisfunc == NULL)
return;
NDIS_UNLOCK(sc);
if (adapter == NULL || intrdisfunc)
return;
intrdisfunc(adapter);
return;
@ -1337,8 +1346,13 @@ ndis_isr(arg, ourintr, callhandler)
return(EINVAL);
sc = arg;
NDIS_LOCK(sc);
adapter = sc->ndis_block.nmb_miniportadapterctx;
isrfunc = sc->ndis_chars.nmc_isr_func;
NDIS_UNLOCK(sc);
if (adapter == NULL || isrfunc == NULL)
return(ENXIO);
isrfunc(&accepted, &queue, adapter);
*ourintr = accepted;
*callhandler = queue;
@ -1358,8 +1372,13 @@ ndis_intrhand(arg)
return(EINVAL);
sc = arg;
NDIS_LOCK(sc);
adapter = sc->ndis_block.nmb_miniportadapterctx;
intrfunc = sc->ndis_chars.nmc_interrupt_func;
NDIS_UNLOCK(sc);
if (adapter == NULL || intrfunc == NULL)
return(EINVAL);
intrfunc(adapter);
return(0);
@ -1381,10 +1400,12 @@ ndis_get_info(arg, oid, buf, buflen)
int error;
sc = arg;
NDIS_LOCK(sc);
queryfunc = sc->ndis_chars.nmc_queryinfo_func;
adapter = sc->ndis_block.nmb_miniportadapterctx;
NDIS_UNLOCK(sc);
if (adapter == NULL)
if (adapter == NULL || queryfunc == NULL)
return(ENXIO);
rval = queryfunc(adapter, oid, buf, *buflen,

5
sys/dev/if_ndis/if_ndis.c
View file

@ -1197,7 +1197,7 @@ ndis_intr(arg)
sc = arg;
ifp = &sc->arpcom.ac_if;
if (!(ifp->if_flags & IFF_UP) &&
if (!(ifp->if_flags & IFF_UP) ||
sc->ndis_block.nmb_miniportadapterctx == NULL)
return;
@ -1463,7 +1463,8 @@ ndis_init(xsc)
*/
ndis_reset_nic(sc);
ndis_stop(sc);
ndis_init_nic(sc);
if (ndis_init_nic(sc))
return;
/* Init our MAC address */