right bits rather than piggy-backing on the V* rights defined in
vnode.h. The mac_bsdextended bits are given the same values as the V*
bits to make the new kernel module binary compatible with the old
version of libugidfw that uses V* bits. This avoids leaking kernel
API/ABI to user management tools, and in particular should remove the
need for libugidfw to include vnode.h.
Requested by: phk
is locked when vm_page_io_finish() is called on a page. This is to satisfy
a new, post-RELENG_5 assertion in vm_page_io_finish(). (I am in the
process of transitioning the responsibility for synchronizing access to
various fields/flags on the page from the global page queues lock to the
per-object lock.)
Tripped over by: obrien@
unbreak /etc/rc.d/root for diskless systems that get their root
filesystem from a read-only NFS mount.
PR: conf/72927
Submitted by: Ralf Wenk <RZ-FreeBSD1004@fh-karlsruhe.de>
Reviewed by: brooks
with a weak memory model or x86 + PAE (or more specifically, your
driver is using bounce pages) and you have had problems with em(4),
this may fix it. At least this is needed to have em(4) work properly
on FreeBSD/arm.
Original version by: cognet
Reviewed by: tackerman
Tested by: cognet
protocols: it is possible for sockets to be created and attached
to the divert protocol between the test for sockets present and
successful unload of the registration handler. We will need to
explore more mature APIs for unregistering the protocol and then
draining consumers, or an atomic test-and-unregister mechanism.
of protocols. The call to divert_packet() is done through a function pointer. All
semantics of IPDIVERT remain intact. If IPDIVERT is not loaded ipfw will refuse to
install divert rules and natd will complain about 'protocol not supported'. Once
it is loaded both will work and accept rules and open the divert socket. The module
can only be unloaded if no divert sockets are open. It does not close any divert
sockets when an unload is requested but will return EBUSY instead.
Add constants for SPI protocol delays that are needed for
target mode.
aic7xxx.c:
Correct a target mode issue that caused an occassional
spurious REQ to be seen on the bus when performing manual
message processing (e.g. transfer rate negotiation).
Enforce phase change bus settle rules with explicit
delays when performing manual message processing in
target mode. The sequencer already did this for
"fast-path", target mode message processing.
acquire Giant if the passed interface has IFF_NEEDSGIANT set on it.
Modify calls into (ifp)->if_ioctl() in if.c to use these macros in order
to ensure that Giant is held.
MFC after: 3 days
Bumped into by: jmg
when using character set conversions.
Also include POSIX <string.h> vs. BSD <strings.h> now that we've broken
traditional BSD behavior [and compatibility with our BSD brethren].
PR: 72445
Submitted by: Vladimir Nechitailo <nechit@lpi.ru>
Patch by: Stasys Smailys <ssmailys@komvista.lt>
protocols in inetsw[] and define initially eight spacer slots.
Remove conflicting declaration 'struct pr_usrreqs nousrreqs'. It is
now declared and initialized in kern/uipc_domain.c.
With pr_proto_register() it has become possible to dynamically load protocols
within the PF_INET domain. However the PF_INET domain has a second important
structure called ip_protox[] that is derived from the 'struct protosw inetsw[]'
and takes care of the de-multiplexing of the various protocols that ride on
top of IP packets.
The functions ipproto_[un]register() allow to dynamically adjust the ip_protox[]
array mux in a consistent and easy way. To register a protocol within
ip_protox[] the existence of a corresponding and matching protocol definition
in inetsw[] is required. The function does not allow to overwrite an already
registered protocol. The unregister function simply replaces the mux slot with
the default index pointer to IPPROTO_RAW as it was previously.
as the original logic did. This fixes a race with vr_intr() which was
masked on UP systems and manifested on SMP systems.
PR: kern/62889
MFC after: 1 day
families.
The protosw[] array of any particular protocol family ("domain") is of fixed size
defined at compile time. This made it impossible to dynamically add or remove any
protocols to or from it. We work around this by introducing so called SPACER's
which are embedded into the protosw[] array at compile time. The SPACER's have
a special protocol number (32767) to indicate the fact that they are SPACER's but
are otherwise NULL. Only as many protocols can be dynamically loaded as SPACER's
are provided in the protosw[] structure.
The pr_usrreqs structure is treated more special and contains pointers to dummy
functions only returning EOPNOTSUPP. This is needed because the use of those
functions pointers is usually not checked within the kernel because until now it
was assumed to be a valid function pointer. Instead of fixing all potential
callers we just return a proper error code.
Two new functions provide a clean API to register and unregister a protocol. The
register function expects a pointer to a valid and complete struct protosw including
a pointer to struct pru_usrreqs provided by the caller. Upon successful registration
the pr_init() function will be called to finish initialization of the protocol. The
unregister function restores the SPACER in place of the protocol again. It is the
responseability of the caller to ensure proper closing of all sockets and freeing
of memory allocation by the unloading protocol.
sys/protosw.h
o Define generic PROTO_SPACER to be 32767
o Prototypes for all pru_*_notsupp() functions
o Prototypes for pf_proto_[un]register() functions
kern/uipc_domain.c
o Global struct pr_usrreqs nousrreqs containing valid pointers to the
pru_*_notsupp() functions
o New functions pf_proto_[un]register()
kern/uipc_socket2.c
o New functions bodies for all pru_*_notsupp() functions
the ATA pccard locking function. This makes pccard devices like
Compact Flash cards work again.
PR: kern/72805
Submitted by: James E. Flemer <jflemer@alum.rpi.edu>
MFC in: 2 days
bus_dmamap_create|destroy for the rx and tx descriptor buffers. Since these
buffers are created with bus_dmamem_alloc(), there is no reason to also
create a map, and doing so just wastes memory.
frames. BGE hardware with the rx alignment bug will still be handled by the
calls to m_adj() that already exist. m_adj() is probably better suited for
this task anyways. Just as with if_em, this saves a malloc + several locks
per packet and prevents unneeded data copying within busdma.
Since the e1000 DMA engines hava no constraints on the alignment of buffer
transfers, there is no reason to tell busdma that there is. This save a
minimum of 1 malloc call per packet, which translates to eliminating 4 locks.
It also means that buffers are not needlessly bounced when transfered. The
end result is a 38% improvement in pps in a 4 way bridging environment.
Obtained from: Sandvine, Inc.
