without Open Firmware directly instead of using OF_getetheraddr(). This is
a bit painful though, as the MAC address is contained in the NA field of
the VPD of the EBus bridge, which is is another function of the same chip.
To make it worse, the VPD of the EBus bridge can't be accessed via the PCI
capability pointer but has to be digged out from the Boot PROM and has a
non-standard format.
The PCI VPD struct and macros used here should be part of the FreeBSD PCI
code nevertheless.
Approved by: tmm
Based on: NetBSD
Tested with: Sun X1032A (hme(4)-isp(4)-combo card) on alpha and i386
o reprobe children when a new driver is added to uhub
o fix the usbd_probe_and_attach to set the ivars to a malloc'd area, as well
as freeing the ivars on child destruction.
o Don't delete children that don't attach. Evidentally, the need to do this
is a common misconception.
o minor formatting foo that may violate style(9) at the moment, but keeps the
diffs against my p4 tree smaller.
This does not solve the ugen gobbling things up problem, but the fixes
I have for that expose bugs in other parts of the tree...
variable. If set to "true" OF_getetheraddr() will now return the unique
MAC address stored in the "local-mac-address" property of the device's
OFW node if present and the host address/system default MAC address if
the node doesn't doesn't have such a property. If set to "false" the
host address will be returned for all devices like before this change.
This brings the behaviour of device drivers for NICs with OFW support/
FCode, i.e. dc(4) for on-board DM9102A on Sun machines, gem(4) and hme(4),
regarding "local-mac-address?" in line with NetBSD and Solaris.
The man pages of the respective drivers will be updated separately to
reflect this change.
- Remove OF_getetheraddr2() which was used as a stopgap in dc(4). Its
functionality is now part of OF_getetheraddr().
threads consuming the result of pfind() will not need to check for a NULL
credential pointer or other signs of an incompletely created process.
However, this also means that pfind() cannot be used to test for the
existence or find such a process. Annotate pfind() to indicate that this
is the case. A review of curent consumers seems to indicate that this is
not a problem for any of them. This closes a number of race conditions
that could result in NULL pointer dereferences and related failure modes.
Other related races continue to exist, especially during iteration of the
allproc list without due caution.
Discussed with: tjr, green
have already done this, so I have styled the patch on their work:
1) introduce a ip_newid() static inline function that checks
the sysctl and then decides if it should return a sequential
or random IP ID.
2) named the sysctl net.inet.ip.random_id
3) IPv6 flow IDs and fragment IDs are now always random.
Flow IDs and frag IDs are significantly less common in the
IPv6 world (ie. rarely generated per-packet), so there should
be smaller performance concerns.
The sysctl defaults to 0 (sequential IP IDs).
Reviewed by: andre, silby, mlaier, ume
Based on: NetBSD
MFC after: 2 months
connect to, re-check that the local UNIX domain socket hasn't been
closed while we slept, and if so, return EINVAL. This affects the
system running both with and without Giant over the network stack,
and recent ULE changes appear to cause it to trigger more
frequently than previously under load. While here, improve catching
of possibly closed UNIX domain sockets in one or two additional
circumstances. I have a much larger set of related changes in
Perforce, but they require more testing before they can be merged.
One debugging printf is left in place to indicate when such a race
takes place: this is typically triggered by a buggy application
that simultaenously connect()'s and close()'s a UNIX domain socket
file descriptor. I'll remove this at some point in the future, but
am interested in seeing how frequently this is reported. In the
case of Martin's reported problem, it appears to be a result of a
non-thread safe syslog() implementation in the C library, which
does not synchronize access to its logging file descriptor.
Reported by: mbr
the interface as IFF_NEEDSGIANT so if_start is run holding Giant.
Note: mutexes are initialized in the softc for this driver, but the
locking appears inadequate to allow Giant-free operation.
the interface as IFF_NEEDSGIANT so if_start is run holding Giant.
Note: this driver does declare and occasionally reference mutexes,
but I believe not nearly enough to provide safety.
code was adjusting twice for the instruction pointer indicating
the *next* instruction to execute. The aic79xx driver had a similar
bug, but was fixed some time ago.
check whether p_ucred is NULL or not in pfs_getattr() before
dereferencing the credential, and return ENOENT if there wasn't one.
This is a symptom of a larger problem, wherein pfind() can return
references to incompletely initialized processes, and we instead ought
to not return them, or check the process state before acting on the
process.
Reported by: kris
Discussed with: tjr, others
