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Bill Paul 069363018f Fix a bug brought to light by the people working on SMPng. I don't quite
understand exactly what it is about SMPng that tickles this bug. What I
do know is that the foo_init() routine in most drivers is often called
twice when an interface is brought up. One time is due to the ifconfig(8)
command calling the SIOCSIFFLAGS ioctl to set the IFF_UP flag, and another
is probably due to the kernel calling ifp->if_init at some point. In any
case, the SMPng changes seem to affect the timing of these two events in
such a way that there is a significant delay before any packets are sent
onto the wire after the interface is first brought up. This manifested
itself locally as an SMPng test machine which failed to obtain an address
via DHCP when booting up.

It looks like the second call to fxp_init() is happening faster now than
it did before, and I think it catches the chip while it's in the process
of dealing with the configuration command from the first call. Whatever
the case, a FXP_CSR_SCB_CNA interrupt event is now generated shortly after
the second fxp_init() call. (This interrupt is apparently never generated
by a non-SMPng kernel, so nobody noticed.)

There are two problems with this: first, fxp_intr() does not handle the
FXP_CSR_SCB_CNA interrupt event (it never tests for it or does anything
to deal with it), and second, the meaning of FXP_CSR_SCB_CNA is not
documented in the driver. (Apparently it means "command unit not active.")
Bad coder. No biscuit.

The fix is to have the FXP_CSR_SCB_CNA interrupt handled just like the
FXP_SCB_STATACK_CXTNO interrupt. This prevents the state machine for
the configuration/RX filter programming stuff from getting wedged for
several seconds and preventing packet transmission.

Noticed by: jhb
2000-08-11 17:47:55 +00:00
bin Optimize out no-op chmod() syscalls. 2000-07-29 22:16:55 +00:00
contrib Fix conflicts. 2000-08-09 18:38:26 +00:00
crypto Chalk up another phkmalloc victim. 2000-08-01 08:07:15 +00:00
etc Add the acdNt# devices to the acd entry, for individual track access. 2000-08-11 09:22:34 +00:00
games Add another Bill Paul quote. 2000-08-07 20:49:08 +00:00
gnu Don't build suidperl by default. Make users specifically enable its 2000-08-10 22:59:53 +00:00
include Add a prototype for rfork_thread(). 2000-07-29 11:53:35 +00:00
kerberos5 Unbreak heimdal build: we can no longer #include <netinet6/in6.h> 2000-07-06 10:09:59 +00:00
kerberosIV Remove the last vestiges of libRSAglue now that it's an empty stub. 2000-03-11 22:34:10 +00:00
lib Add support to send the string 'PXEClient' as the Vendor class 2000-08-11 08:36:17 +00:00
libexec sprintf() -> snprintf() paranoia. 2000-08-04 10:39:34 +00:00
release Mention the 3ware controllers. 2000-08-08 18:54:57 +00:00
sbin Explain why adding ``options NFSKERB'' breaks the kernel build. 2000-08-11 13:03:13 +00:00
secure Unbreak the OpenSSL headers for those of us who don't/can't use IDEA by 2000-08-04 04:25:59 +00:00
share Make the word "ldconfig" a bona fide cross-reference, and clarify 2000-08-11 17:15:37 +00:00
sys Fix a bug brought to light by the people working on SMPng. I don't quite 2000-08-11 17:47:55 +00:00
tools Back out the previous change to the queue(3) interface. 2000-05-26 02:09:24 +00:00
usr.bin While we're in here: 2000-08-11 08:40:10 +00:00
usr.sbin Explain why adding ``options NFSKERB'' breaks the kernel build. 2000-08-11 13:03:13 +00:00
COPYRIGHT Update to add the July 22, 1999 addendum. 1999-09-05 21:33:47 +00:00
Makefile Mention the buildkernel/installkernel targets in the documentation. 2000-07-31 09:26:59 +00:00
Makefile.inc1 Make the update target consistent; both ports and doc are updated 2000-08-07 14:35:49 +00:00
Makefile.upgrade $Id$ -> $FreeBSD$ 1999-08-28 01:35:59 +00:00
README Point out, that build/installkernel need a built world and that more 2000-07-31 12:39:09 +00:00
UPDATING Add stuff: 2000-08-10 23:16:32 +00:00

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Building a kernel is a somewhat more involved process, documentation
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   http://www.freebsd.org/handbook/kernelconfig.html
And in the config(8) man page.
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The sample kernel configuration files reside in the sys/i386/conf
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Source Roadmap:
---------------
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contrib		Packages contributed by 3rd parties.

crypto		Cryptography stuff (see crypto/README).

etc		Template files for /etc

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gnu		Various commands and libraries under the GNU Public License.
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include		System include files.

kerberosIV	Kerberos package.

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sbin		System commands.

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sys		Kernel sources.

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