Commit Graph

95 Commits

Author SHA1 Message Date
Gleb Smirnoff
23033eebf4 Do not touch ifp->if_baudrate in miibus aware drivers. 2006-02-14 12:44:56 +00:00
Ruslan Ermilov
4a0d6638b3 - Store pointer to the link-level address right in "struct ifnet"
rather than in ifindex_table[]; all (except one) accesses are
  through ifp anyway.  IF_LLADDR() works faster, and all (except
  one) ifaddr_byindex() users were converted to use ifp->if_addr.

- Stop storing a (pointer to) Ethernet address in "struct arpcom",
  and drop the IFP2ENADDR() macro; all users have been converted
  to use IF_LLADDR() instead.
2005-11-11 16:04:59 +00:00
Warner Losh
7b279558cc Replace FreeBSD 3.x syntax (controller miibus0) with 4.x syntax
(device miibus) in time for 7.0 :-)
2005-10-22 05:06:55 +00:00
Ruslan Ermilov
e019908ee7 In detach method, move if_free() after bus_teardown_intr(). 2005-10-13 21:11:20 +00:00
Gleb Smirnoff
f0796cd26c - Don't pollute opt_global.h with DEVICE_POLLING and introduce
opt_device_polling.h
- Include opt_device_polling.h into appropriate files.
- Embrace with HAVE_KERNEL_OPTION_HEADERS the include in the files that
  can be compiled as loadable modules.

Reviewed by:	bde
2005-10-05 10:09:17 +00:00
Gleb Smirnoff
4092996774 Big polling(4) cleanup.
o Axe poll in trap.

o Axe IFF_POLLING flag from if_flags.

o Rework revision 1.21 (Giant removal), in such a way that
  poll_mtx is not dropped during call to polling handler.
  This fixes problem with idle polling.

o Make registration and deregistration from polling in a
  functional way, insted of next tick/interrupt.

o Obsolete kern.polling.enable. Polling is turned on/off
  with ifconfig.

Detailed kern_poll.c changes:
  - Remove polling handler flags, introduced in 1.21. The are not
    needed now.
  - Forget and do not check if_flags, if_capenable and if_drv_flags.
  - Call all registered polling handlers unconditionally.
  - Do not drop poll_mtx, when entering polling handlers.
  - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx.
  - In netisr_poll() axe the block, where polling code asks drivers
    to unregister.
  - In netisr_poll() and ether_poll() do polling always, if any
    handlers are present.
  - In ether_poll_[de]register() remove a lot of error hiding code. Assert
    that arguments are correct, instead.
  - In ether_poll_[de]register() use standard return values in case of
    error or success.
  - Introduce poll_switch() that is a sysctl handler for kern.polling.enable.
    poll_switch() goes through interface list and enabled/disables polling.
    A message that kern.polling.enable is deprecated is printed.

Detailed driver changes:
  - On attach driver announces IFCAP_POLLING in if_capabilities, but
    not in if_capenable.
  - On detach driver calls ether_poll_deregister() if polling is enabled.
  - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING
    flag. If there is no, then unlocks and returns.
  - In ioctl handler driver checks for IFCAP_POLLING flag requested to
    be set or cleared. Driver first calls ether_poll_[de]register(), then
    obtains driver lock and [dis/en]ables interrupts.
  - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable.
    If present, then returns.This is important to protect from spurious
    interrupts.

Reviewed by:	ru, sam, jhb
2005-10-01 18:56:19 +00:00
Ruslan Ermilov
3badacee8c Fix "struct ifnet" leaks when attach() fails in the middle, e.g.
when mii_phy_probe() or bus_setup_intr() fails.  For drivers that
call their detach() in this case, call if_free() there to cover
this case too.
2005-09-16 11:11:51 +00:00
John Baldwin
a6c222c739 Various locking fixes and mark MPSAFE:
- Add locked variants of start(), init(), ifmedia_upd(), and poll() and stop
  recursing on the driver lock.
- Add locking to ifmedia_upd() and ifmedia_sts().
- Use callout_*() instead of timeout/untimeout.
- Fix locking in ioctl().

Tested by:	Bob Bishop rb at gid dot co dot uk
MFC after:	3 days
2005-08-30 20:35:08 +00:00
John Baldwin
f68d1644f8 Use device_printf() and if_printf() and remove ste_unit from the softc. 2005-08-17 14:37:39 +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
Robert Watson
13b203d0d7 Modify device drivers supporting multicast addresses to lock if_addr_mtx
over iteration of their multicast address lists when synchronizing the
hardware address filter with the network stack-maintained list.

Problem reported by:	Ed Maste (emaste at phaedrus dot sandvine dot ca>
MFC after:		1 week
2005-08-03 00:18:35 +00:00
Max Laier
ade6e491fc ALTQify ste(4).
Requested and tested by:	<nike_d at cytexbg dot com>
Approved by:			re (scottl)
2005-07-08 13:05:59 +00:00
Brooks Davis
cd036ec193 Move if_alloc() up so it's before mii_phy_probe(). 2005-06-11 01:37:46 +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
Yoshihiro Takahashi
d4fcf3cba5 Remove bus_{mem,p}io.h and related code for a micro-optimization on i386
and amd64.  The optimization is a trivial on recent machines.

Reviewed by:	-arch (imp, marcel, dfr)
2005-05-29 04:42:30 +00:00
Warner Losh
d24ae19d0e Fix style(9) issues with __P removal.
Noticed by: bde
2005-02-24 22:33:05 +00:00
Warner Losh
d701c91325 Return BUS_PROBE_DEFAULT instead of 0. 2005-02-24 21:32:56 +00:00
Warner Losh
60727d8b86 /* -> /*- for license, minor formatting changes 2005-01-07 02:29:27 +00:00
Robert Watson
2a567ae5ec Tag a last set of PCI network interfaces as IFF_NEEDSGIANT until they
are either locked down or demonstrated MPSAFE.
2004-08-28 15:10:35 +00:00
Warner Losh
c3e7434f34 Remove burn bridges code that saved/restored the pci config registers
that are now handled in the pci bus layer.  They are no longer
necessary.
2004-06-28 20:07:03 +00:00
Christian Weisgerber
0e939c0cea Replace handrolled CRC calculation with ether_crc32_[lb]e(). 2004-06-09 14:34:04 +00:00
Poul-Henning Kamp
f11d01c3bc Add missing <sys/module.h> includes 2004-05-30 20:00:41 +00:00
Yaroslav Tykhiy
25fbb2c38c A handler for ioctl(SIOCSIFCAP) should not alter a bit in
if_capenable unless the interface driver is actually able
to toggle the respective capability on and off.

Reviewed by:	ru
2004-05-23 21:05:08 +00:00
Ruslan Ermilov
054b4ce6e5 Implemented per-interface polling(4) control. 2004-04-11 14:42:25 +00:00
Ruslan Ermilov
e2c039a234 Actually fix the TX performance with polling(4) enabled
by increasing the TX list size from 64 to 128, which is
adequate for HZ=1000.

Submitted by:	Vsevolod Lobko
2004-04-06 11:04:54 +00:00
Ruslan Ermilov
e0098a5113 - Improved the TX performance with polling(4) by only checking the
status registers for error conditions and updating statistics
  when there are cycles left (inspired by the nge(4) driver).

- Removed the TX list counter and the producer/consumer gap; it's
  enough to just ensure we don't reuse the last (free) descriptor,
  as the chip may not have read its next pointer yet.  If we reuse
  it, the TX may stall under a heavy TX load with polling enabled.

- Dropped code to recharge the watchdog timer, it's pointless; the
  watchdog routine will re-init the chip and both RX and TX lists.
2004-04-06 07:58:32 +00:00
Ruslan Ermilov
2593748c60 Recharge the watchdog timer if there's still some TX work left. 2004-04-03 15:55:21 +00:00
Ruslan Ermilov
6ec31f009a Performance tuning.
Moved the RX ring resyncing code to ste_rxeoc(), and only run it
if we were asked to POLL_AND_CHECK_STATUS, under DEVICE_POLLING.
(This significantly reduces the CPU load.)

Improved the RX ring resyncing code by re-checking if the head
is still empty before doing resyncing.  This mostly affects the
DEVICE_POLLING mode, where we run this code periodically.  We
could start checking with an empty head (well, an empty ring
even), and after doing a few iterations, the chip might write
a few entries, including the head, and we would bogusly consider
this case as requiring resyncing.  On a test box, this reduced
the number of resyncs done by a factor of 10.

In ste_txeof(sc), only reset the watchdog timer to zero when
the TX list is completely empty.

Converted ste_tx_prev_idx to a pointer -- faster.

Removed some bitrot.
2004-04-02 23:36:49 +00:00
Ruslan Ermilov
ba7bc837d0 Moved the statistical counter under hw.ste.rxsyncs.
Suggested by:	njl
2004-04-01 12:55:38 +00:00
Ruslan Ermilov
065566e6a3 Under a heavy RX load, at least with D-Link DFE-550TX adapters,
the driver's RX ring head may fall behind the chip, causing the
stuck traffic, disordered packets, etc.  Work around this by
adopting the technique of resyncing RX head used in dc(4) and
xl(4) drivers, but do it in a slightly different place to reduce
the number of resyncs needed.

Also, set the NIC's RX polling period to a more meaningful value,
to stop overloading the PCI bus (this also reduces the number of
resyncs by a factor of 3 or more in a long run; the actual number
is very dependent on a nature of the traffic).

Maintain the statistics counter as the hw.ste_rxsyncs sysctl.

In cooperation with:	Vsevolod Lobko
OK'ed by:		ambrisko
MFC after:		5 days
2004-03-31 21:10:01 +00:00
Ruslan Ermilov
001407b9c2 Added polling(4) support for ste(4).
MFC after:	5 days
2004-03-31 20:39:20 +00:00
Ruslan Ermilov
3b6b14d465 Switch ste_encap() over to using m_defrag().
No functional change, the previous ste_encap() was correct WRT
long mbuf chains; this just reduces code duplication.

MFC after:	3 days
Prodded by:	ambrisko
2004-03-30 19:23:38 +00:00
Ruslan Ermilov
a9b2cd0aa6 Properly reprogram the hardware when IFF_ALLMULTI flag is set. 2004-03-24 17:43:45 +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
Matthew N. Dodd
e3bbbec2ca Announce ethernet MAC addresss in ether_ifattach(). 2004-03-14 07:12:25 +00:00
Maxime Henrion
aa0444ecdb Stop setting ifp->if_output to ether_output() since ether_ifattach()
does it for us already.
2004-03-11 14:04:59 +00:00
David E. O'Brien
a55a017f42 Don't use caddr_t in mchash(). Also use C99 spellings over BSD ones.
Requested by:	bde,imp
2003-12-08 07:54:15 +00:00
Sam Leffler
5120abbfb4 Drop the driver lock around calls to if_input to avoid a LOR when
the packets are immediately returned for sending (e.g.  when bridging
or packet forwarding).  There are more efficient ways to do this
but for now use the least intrusive approach.

Reviewed by:	imp, rwatson
2003-11-14 19:00:32 +00:00
David E. O'Brien
aa8255025a Try to create some sort of consistency in how the routings to find the
multicast hash are written.  There are still two distinct algorithms used,
and there actually isn't any reason each driver should have its own copy
of this function as they could all share one copy of it (if it grew an
additional argument).
2003-11-13 20:55:53 +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
Warner Losh
19b7ffd1b8 Prefer new location of pci include files (which have only been in the
tree for two or more years now), except in a few places where there's
code to be compatible with older versions of FreeBSD.
2003-08-22 07:20:27 +00:00
Warner Losh
b84e866a18 Due to extreme bogusness in the pci bus layer, these drivers were
forced to do slightly bogus power state manipulation.  However, this
is one of those features that is preventing further progress, so mark
them as BURN_BIRDGES like I did for the drivers in sys/dev/...

This, like the other change, are a no-op unless you have BURN_BRIDGES
in your kernel.
2003-07-03 21:39:53 +00:00
Poul-Henning Kamp
9c96882e80 Remove unused variables.
Found by:       FlexeLint
2003-05-31 19:58:45 +00:00
Warner Losh
214073e5e4 Use newly minted device_is_attached rather than device_is_alive to see
if attach succeeded.  device_is_alive just tells us that probe
succeeded.  Since we were using it to do things like detach net
interfaces, this caused problems when there were errors in the attach
routine.

Symptoms of problem reported by: martin blapp
2003-04-21 18:34:04 +00:00
Nate Lawson
693f4477b1 Revise attach/detach resource cleanup
- Unconditionally call *_stop() if device is in the tree. This is to
  prevent callouts from happening after the device is gone. Checks for
  bus_child_present() should be added in the future to keep from touching
  potentially non-existent hardware in *_detach().  Found by iedowse@.
- Always check for and free miibus children, even if the device is not in
  the tree since some failure cases could have gotten here.
- Call ether_ifdetach() in the irq setup failure case
- ti(4), xl(4): move ifmedia_init() calls to the beginning of attach so
  that ifmedia_removeall() can be unconditionally called on detach. There
  is no way to detect whether ifmedia has been initialized without using
  a separate variable (as tl(4) does).
- Add comments to indicate assumptions of code path
2003-04-17 20:32:06 +00:00
Matthew N. Dodd
533294b956 - Don't call pci_enable_io() in drivers (unless needed for resume).
- Don't test memory/port status and emit an error message; the PCI
  bus code will do this now.
2003-04-16 03:16:57 +00:00
Matthew N. Dodd
f246e4a17f - Express hard dependencies on bus (pci, isa, pccard) and
network layer (ether).
- Don't abuse module names to facilitate ifconfig module loading;
  such abuse isn't really needed.  (And if we do need type information
  associated with a module then we should make it explicit and not
  use hacks.)
2003-04-15 06:37:30 +00:00
David E. O'Brien
8368cf8f75 Use __FBSDID rather than rcsid[]. 2003-04-03 21:36:33 +00:00
John Baldwin
59f47d29b7 Add missing ()'s so that these drivers all compile again.
Noticed by:	jake
Tested on:	i386 (compile)
2003-03-31 20:22:00 +00:00
Nate Lawson
54f1f1d1e6 Clean up locking and resource management for pci/if_*
- Remove locking of the softc in the attach method, instead depending on
  bus_setup_intr being at the end of attach (delaying interrupt enable until
  after ether_ifattach is called)
- Call *_detach directly in the error case of attach, depending on checking
  in detach to only free resources that were allocated.  This puts all
  resource freeing in one place, avoiding thinkos that lead to memory leaks.
- Add bus_child_present check to calls to *_stop in the detach method to
  be sure hw is present before touching its registers.
- Remove bzero softc calls since device_t should do this for us.
- dc: move interrupt allocation back where it was before.  It was unnecessary
  to move it.  This reverts part of 1.88
- rl: move irq allocation before ether_ifattach.  Problems might have been
  caused by allocating the irq after enabling interrupts on the card.
- rl: call rl_stop before ether_ifdetach
- sf: call sf_stop before ether_ifdetach
- sis: add missed free of sis_tag
- sis: check errors from tag creation
- sis: move dmamem_alloc and dmamap_load to happen at same time as tag creation
- sk: remove duplicate initialization of sk_dev
- ste: add missed bus_generic_detach
- ti: call ti_stop before ether_ifdetach
- ti: add missed error setting in ti_rdata alloc failure
- vr: add missed error setting in I/O, memory mapping cases
- xl: add missed error setting in I/O, memory mapping cases
- xl: remove multi-level goto on attach failure
- xl: move dmamem_alloc and dmamap_load to happen at same time as tag creation
- Calls to free(9) are unconditional because it is valid to call free with a
  null pointer.

Reviewed by:	imp, mdodd
2003-03-31 17:29:43 +00:00