to ignore inbound data sizes less than the threshold. otherwise,
when connected to a video aal0 input the driver gives us a massive
stream of 56 byte mbufs each with one aal0 cell in it and the
system just can't keep up with it, especially if the socket buffer
size is large [it hangs until you turn off the video source].
fixes: when turning off a vc, try and check the freshest copy of the mode
when seeing if we need to enter the "drain" state. also, don't
panic if we get unexpected rx interrupt on a VCI (instead make sure
the VC is off, print a warning, and move on!).
- change rxso into a void handle ... no need to know details at this low
level.
fix:
- forgot to init "vci" during ENOTHER_DRAIN case of RX DMA interrupt
[could cause a vm_fault on native mode connection close depending
on needing to drain out the VC and also the random value of vci]
> Prevent recursive invocation of mcount() while in kernel by setting profiling
> state to BUSY while in mcount(). This allows profiling to work when mcount()
> calls a profiled routine (for example, udiv on the SPARC).
- more stat counters (rxmbufout -- mbufs, ttrash -- trashed RBD)
- add swsl_size to keep track of size of software slist
- revise when we call en_service
- fix handling of circular lists (was getting full vs empty confused in
extreem cases...)
- native mode atm: remove sbappend code: can't do it here since
socket buffer is protected only by splsoftnet and that doesn't
mask enintr off. forces us to switch to a two level interrupt
scheme. revise call to atm_input to reflect that.
- Good bye SYS_PBOOT and SYS_NBOOT, hello SYS_UBOOT (unified boot)
Currently supports booting from SCSI and HP-IB disk and network
from a single boot block. Infrastructure for booting from
HP-IB tape is there, but it doesn't quite work yet.
- Add a slightly modified version of Gordon Ross's "rawfs",
which provides a filesystem-like interface to tape devices.
Still needs debugging (see above).
- Rename sys_inst.c to inst.c, so that the LIF directory entry
turns out right (used to look like SYS_SYS_I if loaded from
tape).
- Add a "netio_ask" hint to netio.c, so that a special instnetio.o
doesn't have to be compiled for SYS_INST. Defaults to using
bootparams, but if set, will prompt user for information
usually obtained from bootparams.
- General cleanup.
in a more elegant way, but it works as is, and we need it now.
- Add a README and Makefile for the above. Note that this directory should
NOT be added to ../Makefile's SUBDIRS.
ports like the hp300 (or i386, or ...) will never get a chance to
build or install the manual page. For this reason, the page belongs in
the x68k machine-dependent list, not the "shared machine-dependent" pages.
somehow got lost between NetBSD and Linux. Output side mbuf-walking
code now correctly bytestuffs mbuf chains, as well as single mbufs
and clusters.
* Update radio error-parsing code to Stuart's latest stable code.
We now parse error messages the older code didn't.
* Note where radio-crash watchdogs should be added (the linux code
is there, #ifdef'ed out). This still just doesn't work.
The radio reset doesn't always work even when slattatch is first started,
but I have a radio with old firmware, which may be a contributing factor.
* Correct the checks for the tty output queue being overfull; estimate
the stuffed pkt size as (original * 65/64) + STRIP_HDRLEN + 2,
instead of SLIP's (2*SLMTU). Re-enable the disabled check now the
size estimate isn't excessively large.
* Fix BPF tapping of strip interfaces, STRIP packets are wrapped
in a SLIP bpf header. This implies no BPF support for arp or atalk,
even though Linux boxes are sending arp requests and gratuitous arps.
There may be no good fix short of adding explicit STRIP encapsulation
support to bpf/tcpdump.
* Still need a solid walkthrough, and rewrite to eliminate redundant
receive-side mbuf copying.
[1] if user tries to enter in a bogus PVC don't leave it in the routing
table ... remove it
[2] change ioctl arg to include rxso for lower layer
[3] add hooks (inside "NATM" ifdef) for native mode atm sockets so that
they don't clash with IP PVCs. [i am still debugging the native
mode atm socket protosw code]
[1] rxslot "cur" pointer wasn't updated if we copied all data and
didn't have any fill. this could cause a service id mismatch
panic under load.
[2] recv of aal0 forgot to include the cell header in the data length
calc [add cell header length to midwayreg.h]
[3] fix control info "chop" for raw mode and aal0
[4] handle rxsb better for native atm connections
(XXX: still working on this ... not complete and needs revision)
chuck