src/sys/dev/ppbus, branch release/9.3.0

MFC r227814:

2012-01-31T01:51:30Z

- Use ppb_assert_locked() rather than using explicit mtx_assert call - Make ppbus code agnostic in regard of INVARIANTS option

MFC r227758,227759,227788:

2012-01-31T01:45:20Z

Introduce macro stubs in the mutex and sxlock implementation that will be always defined and will allow consumers, willing to provide options, file and line to locking requests, to not worry about options redefining the interfaces. This is typically useful when there is the need to build another locking interface on top of the mutex one. Requested by: kib

MFC r227701, r227847 and r227849:

2011-12-31T15:31:34Z

Move the device_delete_all_children() function from usb_util.c to kern/subr_bus.c. Simplify this function so that it no longer depends on malloc() to execute. Rename device_delete_all_children() into device_delete_children(). Identify a few other places where it makes sense to use device_delete_children().

MFC r226173, r227843, r227848 and r227908:

2011-12-31T14:12:12Z

Use DEVMETHOD_END to mark end of device methods. Remove superfluous device methods. Add some missing __FBSBID() macros.

MFC: r226116

2011-10-15T12:08:21Z

Add missing va_end() to clean up after va_start(). Approved by: re (kib)

Tag mbufs of all incoming frames or packets with the interface's FIB

2011-07-03T16:08:38Z

setting (either default or if supported as set by SIOCSIFFIB, e.g. from ifconfig). Submitted by: Alexander V. Chernikov (melifaro ipfw.ru) Reviewed by: julian MFC after: 2 weeks

bus_add_child: change type of order parameter to u_int

2010-09-10T11:19:03Z

This reflects actual type used to store and compare child device orders. Change is mostly done via a Coccinelle (soon to be devel/coccinelle) semantic patch. Verified by LINT+modules kernel builds. Followup to: r212213 MFC after: 10 days

Add new tunable 'net.link.ifqmaxlen' to set default send interface

2010-05-03T07:32:50Z

queue length. The default value for this parameter is 50, which is quite low for many of today's uses and the only way to modify this parameter right now is to edit if_var.h file. Also add read-only sysctl with the same name, so that it's possible to retrieve the current value. MFC after: 1 month

MFp4: Large set of CAM inprovements.

2010-01-28T08:41:30Z

- Unify bus reset/probe sequence. Whenever bus attached at boot or later, CAM will automatically reset and scan it. It allows to remove duplicate code from many drivers. - Any bus, attached before CAM completed it's boot-time initialization, will equally join to the process, delaying boot if needed. - New kern.cam.boot_delay loader tunable should help controllers that are still unable to register their buses in time (such as slow USB/ PCCard/ CardBus devices), by adding one more event to wait on boot. - To allow synchronization between different CAM levels, concept of requests priorities was extended. Priorities now split between several "run levels". Device can be freezed at specified level, allowing higher priority requests to pass. For example, no payload requests allowed, until PMP driver enable port. ATA XPT negotiate transfer parameters, periph driver configure caching and so on. - Frozen requests are no more counted by request allocation scheduler. It fixes deadlocks, when frozen low priority payload requests occupying slots, required by higher levels to manage theit execution. - Two last changes were holding proper ATA reinitialization and error recovery implementation. Now it is done: SATA controllers and Port Multipliers now implement automatic hot-plug and should correctly recover from timeouts and bus resets. - Improve SCSI error recovery for devices on buses without automatic sense reporting, such as ATAPI or USB. For example, it allows CAM to wait, while CD drive loads disk, instead of immediately return error status. - Decapitalize diagnostic messages and make them more readable and sensible. - Teach PMP driver to limit maximum speed on fan-out ports. - Make boot wait for PMP scan completes, and make rescan more reliable. - Fix pass driver, to return CCB to user level in case of error. - Increase number of retries in cd driver, as device may return several UAs.

Check pointer for NULL before dereferencing it, not after.

2009-10-22T06:51:29Z

PR: 138387, 138388 Submitted by: Patroklos Argyroudis MFC after: 1 week