Commit Graph

66 Commits

Author SHA1 Message Date
Pedro F. Giffuni
453130d9bf sys/dev: minor spelling fixes.
Most affect comments, very few have user-visible effects.
2016-05-03 03:41:25 +00:00
Pedro F. Giffuni
d9c9c81c08 sys: use our roundup2/rounddown2() macros when param.h is available.
rounddown2 tends to produce longer lines than the original code
and when the code has a high indentation level it was not really
advantageous to do the replacement.

This tries to strike a balance between readability using the macros
and flexibility of having the expressions, so not everything is
converted.
2016-04-21 19:57:40 +00:00
Pedro F. Giffuni
73a1170a8c sys/dev: use our nitems() macro when it is avaliable through param.h.
No functional change, only trivial cases are done in this sweep,
Drivers that can get further enhancements will be done independently.

Discussed in:	freebsd-current
2016-04-19 23:37:24 +00:00
Hans Petter Selasky
f0188618f2 Fix multiple incorrect SYSCTL arguments in the kernel:
- Wrong integer type was specified.

- Wrong or missing "access" specifier. The "access" specifier
sometimes included the SYSCTL type, which it should not, except for
procedural SYSCTL nodes.

- Logical OR where binary OR was expected.

- Properly assert the "access" argument passed to all SYSCTL macros,
using the CTASSERT macro. This applies to both static- and dynamically
created SYSCTLs.

- Properly assert the the data type for both static and dynamic
SYSCTLs. In the case of static SYSCTLs we only assert that the data
pointed to by the SYSCTL data pointer has the correct size, hence
there is no easy way to assert types in the C language outside a
C-function.

- Rewrote some code which doesn't pass a constant "access" specifier
when creating dynamic SYSCTL nodes, which is now a requirement.

- Updated "EXAMPLES" section in SYSCTL manual page.

MFC after:	3 days
Sponsored by:	Mellanox Technologies
2014-10-21 07:31:21 +00:00
Davide Italiano
2be111bf7d Follow up to r225617. In order to maximize the re-usability of kernel code
in userland rename in-kernel getenv()/setenv() to kern_setenv()/kern_getenv().
This fixes a namespace collision with libc symbols.

Submitted by:   kmacy
Tested by:      make universe
2014-10-16 18:04:43 +00:00
Gleb Smirnoff
c8dfaf382f Mechanically convert to if_inc_counter(). 2014-09-19 03:51:26 +00:00
Gleb Smirnoff
fcc34a238c Fix style bug: rename the refcount field of m_ext to ext_cnt, to match
other members.

Sponsored by:	Nginx, Inc.
2014-07-11 14:34:29 +00:00
Gleb Smirnoff
15c28f87b8 All mbuf external free functions never fail, so let them be void.
Sponsored by:	Nginx, Inc.
2014-07-11 13:58:48 +00:00
Eitan Adler
7a22215c53 Fix undefined behavior: (1 << 31) is not defined as 1 is an int and this
shifts into the sign bit.  Instead use (1U << 31) which gets the
expected result.

This fix is not ideal as it assumes a 32 bit int, but does fix the issue
for most cases.

A similar change was made in OpenBSD.

Discussed with:	-arch, rdivacky
Reviewed by:	cperciva
2013-11-30 22:17:27 +00:00
Eitan Adler
c8aef31d30 Similar to the (1 << 31) case it is not defined to do (2 << 30). 2013-11-30 22:16:37 +00:00
Gleb Smirnoff
76039bc84f The r48589 promised to remove implicit inclusion of if_var.h soon. Prepare
to this event, adding if_var.h to files that do need it. Also, include
all includes that now are included due to implicit pollution via if_var.h

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2013-10-26 17:58:36 +00:00
Andre Oppermann
bb25e5ab00 Give (*ext_free) an int return value allowing for very sophisticated
external mbuf buffer management capabilities in the future.

For now only EXT_FREE_OK is defined with current legacy behavior.

Sponsored by:	The FreeBSD Foundation
2013-08-25 10:57:09 +00:00
Andre Oppermann
9a73687609 Add an mbuf pointer parameter to (*ext_free) to give the external
free function access to the mbuf the external memory was attached
to.

Mechanically adjust all users to include the mbuf parameter.

This fixes a long standing annoyance for external free functions.
Before one had to sacrifice one of the argument pointers for this.

Sponsored by:	The FreeBSD Foundation
2013-08-24 16:57:44 +00:00
Scott Long
c68534f1d5 Update PCI drivers to no longer look at the MEMIO-enabled bit in the PCI
command register.  The lazy BAR allocation code in FreeBSD sometimes
disables this bit when it detects a range conflict, and will re-enable
it on demand when a driver allocates the BAR.  Thus, the bit is no longer
a reliable indication of capability, and should not be checked.  This
results in the elimination of a lot of code from drivers, and also gives
the opportunity to simplify a lot of drivers to use a helper API to set
the busmaster enable bit.

This changes fixes some recent reports of disk controllers and their
associated drives/enclosures disappearing during boot.

Submitted by:	jhb
Reviewed by:	jfv, marius, achadd, achim
MFC after:	1 day
2013-08-12 23:30:01 +00:00
Gleb Smirnoff
c6499eccad Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags in sys/dev.
2012-12-04 09:32:43 +00:00
Scott Long
62ce43ccc8 More conversions of drivers to use the PCI parent DMA tag. 2012-03-12 18:15:08 +00:00
Martin Blapp
c2ede4b379 Remove extraneous semicolons, no functional changes.
Submitted by:	Marc Balmer <marc@msys.ch>
MFC after:	1 week
2010-01-07 21:01:37 +00:00
Ed Maste
a4911e1696 Free pointer from getenv() when done with it.
Submitted by:	Phil Longstaff
2009-11-30 18:26:46 +00:00
John Baldwin
e1b17582f4 Take a step towards removing if_watchdog/if_timer. Don't explicitly set
if_watchdog/if_timer to NULL/0 when initializing an ifnet.  if_alloc()
sets those members to NULL/0 already.
2009-11-06 14:55:01 +00:00
Poul-Henning Kamp
cf827063a9 Give MEXTADD() another argument to make both void pointers to the
free function controlable, instead of passing the KVA of the buffer
storage as the first argument.

Fix all conventional users of the API to pass the KVA of the buffer
as the first argument, to make this a no-op commit.

Likely break the only non-convetional user of the API, after informing
the relevant committer.

Update the mbuf(9) manual page, which was already out of sync on
this point.

Bump __FreeBSD_version to 800016 as there is no way to tell how
many arguments a CPP macro needs any other way.

This paves the way for giving sendfile(9) a way to wait for the
passed storage to have been accessed before returning.

This does not affect the memory layout or size of mbufs.

Parental oversight by:	sam and rwatson.

No MFC is anticipated.
2008-02-01 19:36:27 +00:00
Matt Jacob
7325b9bce7 Remove the __inline qualifier from a function which is in fact not an
inline but instead a module wide function, thus quieting a GCC 4.2 warning.
2007-06-08 01:37:47 +00:00
Paolo Pisati
ef544f6312 o break newbus api: add a new argument of type driver_filter_t to
bus_setup_intr()

o add an int return code to all fast handlers

o retire INTR_FAST/IH_FAST

For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current

Reviewed by: many
Approved by: re@
2007-02-23 12:19:07 +00:00
Andre Oppermann
1761656cdd Replace m_extadd() with macro version MEXTADD(). 2005-09-19 22:04:41 +00:00
Ruslan Ermilov
ad61f89618 Fix "struct ifnet" leaks when attach() fails in the middle. 2005-09-16 11:25:19 +00:00
Robert Watson
13f4c340ae Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and
IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to
ifnet.if_drv_flags.  Device drivers are now responsible for
synchronizing access to these flags, as they are in if_drv_flags.  This
helps prevent races between the network stack and device driver in
maintaining the interface flags field.

Many __FreeBSD__ and __FreeBSD_version checks maintained and continued;
some less so.

Reviewed by:	pjd, bz
MFC after:	7 days
2005-08-09 10:20:02 +00:00
John Baldwin
122eceef61 Convert the atomic_ptr() operations over to operating on uintptr_t
variables rather than void * variables.  This makes it easier and simpler
to get asm constraints and volatile keywords correct.

MFC after:	3 days
Tested on:	i386, alpha, sparc64
Compiled on:	ia64, powerpc, amd64
Kernel toolchain busted on:	arm
2005-07-15 18:17:59 +00:00
Hartmut Brandt
4df70a92b5 Fix another fallout from the ifnet change that assumed that a softc
starts with an ifatm which in turns has an ifnet. Remove also a couple
of unneccessary casts that could hide such things in the future.

Approved by:	re
2005-07-01 10:45:02 +00:00
Hartmut Brandt
2e7d71c520 Fix the debugging macro. The struct ifnet isn't embedded in softc
anymore - instead we have a pointer in the softc to it. Use that
instead to call if_printf().

Approved by:	re
2005-06-22 06:42:03 +00:00
Brooks Davis
fc74a9f93a Stop embedding struct ifnet at the top of driver softcs. Instead the
struct ifnet or the layer 2 common structure it was embedded in have
been replaced with a struct ifnet pointer to be filled by a call to the
new function, if_alloc(). The layer 2 common structure is also allocated
via if_alloc() based on the interface type. It is hung off the new
struct ifnet member, if_l2com.

This change removes the size of these structures from the kernel ABI and
will allow us to better manage them as interfaces come and go.

Other changes of note:
 - Struct arpcom is no longer referenced in normal interface code.
   Instead the Ethernet address is accessed via the IFP2ENADDR() macro.
   To enforce this ac_enaddr has been renamed to _ac_enaddr.
 - The second argument to ether_ifattach is now always the mac address
   from driver private storage rather than sometimes being ac_enaddr.

Reviewed by:	sobomax, sam
2005-06-10 16:49:24 +00:00
Hartmut Brandt
07d9fa4c2e Add a missing comma which prevents compilation with debugging enabled.
Spotted by:	Donatas <donatas@lrtc.net>
2005-05-25 13:33:58 +00:00
Warner Losh
538565c4a5 Use BUS_PROBE_DEFAULT for pci probe return value 2005-03-05 18:30:12 +00:00
Warner Losh
098ca2bda9 Start each of the license/copyright comments with /*-, minor shuffle of lines 2005-01-06 01:43:34 +00:00
Nate Lawson
5f96beb9e0 Convert callers to the new bus_alloc_resource_any(9) API.
Submitted by:	Mark Santcroos <marks@ripe.net>
Reviewed by:	imp, dfr, bde
2004-03-17 17:50:55 +00:00
Scott Long
474e30f0b1 All three of these drivers abused cv_waitq_empty in the same way by spinning
on it in hopes of making sure that the waitq was empty before going on.
This wasn't needed and probably never would have worked as intended.  Now
that cv_waitq_empty() and friends are gone, the code in these drivers that
spins on it can go away too.  This should unbreak LINT.

Discussed with:	kan
2004-02-29 09:26:01 +00:00
Alfred Perlstein
3939094dfb change NULL to 0 to silence warning. 2003-12-24 18:23:02 +00:00
Hartmut Brandt
d7af3b881c Make the driver conditionally MPSAFE. MPSAFEty defaults to not-mpsafe
but can be enabled by setting hw.atm.hatmN.mpsafe in the kernel
environment to a non-zero value before loading the driver. When
the problems with network MPSAFEty have been sorted out this will
be removed and the driver will default to MPSAFE.
2003-11-05 11:47:31 +00:00
Hartmut Brandt
8e994188e2 When compiled with debugging trace the number of transmit mbufs that
we own. Warn if something strange happens (number drops below zero or
there appears to be a leak).
2003-11-05 11:43:06 +00:00
Hartmut Brandt
0144e71085 Initialize the USED flag in new external receive buffers to 0, not to 1.
We put them directly onto the free list instead of calling the
external mbuf free routine (that routine would have cleaned the flag).

This fixes a bug which manifests itself in falsely reporting a lot of used
buffers when configuring the interface down.
2003-11-05 11:15:47 +00:00
Brooks Davis
9bf40ede4a Replace the if_name and if_unit members of struct ifnet with new members
if_xname, if_dname, and if_dunit. if_xname is the name of the interface
and if_dname/unit are the driver name and instance.

This change paves the way for interface renaming and enhanced pseudo
device creation and configuration symantics.

Approved By:	re (in principle)
Reviewed By:	njl, imp
Tested On:	i386, amd64, sparc64
Obtained From:	NetBSD (if_xname)
2003-10-31 18:32:15 +00:00
Hartmut Brandt
fba6dd7f18 Fix breakage on ia64: PAGE_SIZE on ia64 is large enough that more than
256 raw receive buffers (96 byte each) fit into one page. This breaks the
limit imposed by the usage of an uint8_t for the buffer number. Restrict
the allocation size for buffers to a maximum of 8192.
2003-10-31 13:35:22 +00:00
Hartmut Brandt
cc3f6cb9fd Explain why the lock-free allocation algorithm is safe in our case
while beeing not safe in the general case. Thanks to David Schultz
<das@freebsd.org> for help.
2003-10-30 16:19:50 +00:00
Hartmut Brandt
62b93d9b12 Reinvent the used-flag for external mbufs. This and the on-card flag
are now in the header of the external buffer itself which allows us
to manipulate them in the free routine without having to lock the softc
structure or the free list. To get space for these flags the chunk number
is reduced to 8 bit which amounts to a maximum of 256 chunks per allocated
page. This restriction is now enforced by a CTASSERT.
2003-10-30 10:43:52 +00:00
Hartmut Brandt
d976286c77 Allow sending of more than one raw cell from a single mbuf. Only the
very first cell in the mbuf should have a cell header word (of which
everything except the payload type and the CLP bit is ignored). All
other cells should be 48 byte and get the same header as the first cell.

This fixes a problem with sending more than 120000 raw cells/sec through
an HE155. The card seems to need 2 cell times to DMA the transmit buffer
ready queue entry and the transmit buffer descriptor so at 1/3 the
link rate the transmit buffer ready queue starts to fill up. Even with this
patch it's obviously impossible to send raw cells at link rate.
2003-10-29 15:15:19 +00:00
Hartmut Brandt
cb79e7478d Remove a superfluous ) from the previous commit. This was obviously
a result of the current solar storm.
2003-10-29 15:11:26 +00:00
Hartmut Brandt
278bc3c3a9 Make the maximum number of pages for external mbufs configurable in
the kernel environment and accessible as a RO sysctl.

Explain that the HE155 will not work in 64-bit/66MHz slots, but may work
in 64-bit/33MHz slots.
2003-10-29 15:07:10 +00:00
Hartmut Brandt
92d5836987 Make the value of the HATM_DEBUG symbol the default for the debugging
flags. Introduce a new debugging flag to dump received packets.
2003-10-29 14:33:41 +00:00
Hartmut Brandt
ac45adc11a Inline a function that was called only in one place directly into that place.
Correct a bug when the number of pages for external mbufs was
very large. In this case the page number could overflow into the large
buffer flag. Make this more unlikley by move that flag further away.
2003-10-29 14:28:26 +00:00
Hartmut Brandt
908b018b49 We have some space in the external mbufs so use this space for
the external buffer reference count. This saves us a malloc() + free()
per small receive mbuf.
2003-10-29 13:21:38 +00:00
Hartmut Brandt
7672807356 Defer allocation of the actual receive mbuf until the external buffer
is returned from the card to the driver. Add a counter that shows
how many times this allocation has failed. Note, that we could even
further delay the allocation of the mbuf until we know, that we need it
(there are no receive errors and the connection is open). This will be done
in a later commit.

Print the new statistics field in atmconfig.
2003-10-29 13:14:39 +00:00
Hartmut Brandt
d1f6e71f1d Get rid of the mutexes for the exernal buffer free lists. Use
atomic instructions instead. Remove the stuff used to track
whether an external mbuf travels through the system. This is
temporary only and will come back soon.
2003-10-29 12:59:44 +00:00