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* [PATCH] uml: return hotplug errors to hostJeff Dike2007-02-111-51/+46
| | | | | | | | | | | | | | | | | | I noticed that errors happening while hotplugging devices from the host were never returned back to the mconsole client. In some cases, success was returned instead of even an information-free error. This patch cleans that up by having the low-level configuration code pass back an error string along with an error code. At the top level, which knows whether it is early boot time or responding to an mconsole request, the string is printk'd or returned to the mconsole client. There are also whitespace and trivial code cleanups in the surrounding code. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] uml: fix net_kern workqueue abusePeter Zijlstra2006-12-131-6/+9
| | | | | | | | | | Fix up the work on stack and exit scope trouble by placing the work_struct in the uml_net_private data. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* um: replace kmalloc+memset with kzallocYan Burman2006-12-121-2/+1
| | | | | | | Replace kmalloc+memset with kzalloc Signed-off-by: Yan Burman <burman.yan@gmail.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* WorkQueue: Fix up arch-specific work items where possibleDavid Howells2006-12-051-0/+1
| | | | | | | | | | Fix up arch-specific work items where possible to use the new work_struct and delayed_work structs. Three places that enqueue bits of their stack and then return have been marked with #error as this is not permitted. Signed-Off-By: David Howells <dhowells@redhat.com>
* [PATCH] uml pt_regs fixesAl Viro2006-10-081-1/+1
| | | | | | | Real fix for UML pt_regs stuff. Note set_irq_regs() logics in there... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Remove all inclusions of <linux/config.h>Dave Jones2006-10-041-1/+0
| | | | | | kbuild explicitly includes this at build time. Signed-off-by: Dave Jones <davej@redhat.com>
* [PATCH] uml build fixOllie Wild2006-09-291-1/+1
| | | | | | Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: don't roll my own random MAC generatorJeff Dike2006-09-291-3/+1
| | | | | | | | | Use the existing random_ether_addr() instead of cooking up my own version. Pointed out by Dave Hollis and Jason Lunz. Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: mechanical tidying after random MACs changeJeff Dike2006-09-291-65/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mechanical, hopefully non-functional changes stemming from setup_etheraddr always succeeding now that it always assigns a MAC, either from the command line or generated randomly: the test of the return of setup_etheraddr is removed, and code dependent on it succeeding is now unconditional setup_etheraddr can now be made void struct uml_net.have_mac is now always 1, so tests of it can be similarly removed, and uses of it can be replaced with 1 struct uml_net.have_mac is no longer used, so it can be removed struct uml_net_private.have_mac is copied from struct uml_net, so it is always 1 tests of uml_net_private.have_mac can be removed uml_net_private.have_mac can now be removed the only call to dev_ip_addr was removed, so it can be deleted It also turns out that setup_etheraddr is called only once, from the same file, so it can be static and its declaration removed from net_kern.h. Similarly, set_ether_mac is defined and called only from one file. Finally, setup_etheraddr and set_ether_mac were moved to avoid needing forward declarations. Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: assign random MACs to interfaces if necessaryJeff Dike2006-09-291-4/+11
| | | | | | | | | | | | | | | | | | | | | | Assign a random MAC to an ethernet interface if one was not provided on the command line. This became pressing when distros started bringing interfaces up before assigning IPs to them. The previous pattern of assigning an IP then bringing it up allowed the MAC to be generated from the first IP assigned. However, once the thing is up, it's probably a bad idea to change the MAC, so the MAC stayed initialized to fe:fd:0:0:0:0. Now, if there is no MAC from the command line, one is generated. We use the microseconds from gettimeofday (20 bits), plus the low 12 bits of the pid to seed the random number generator. random() is called twice, with 16 bits of each result used. I didn't want to have to try to fill in 32 bits optimally given an arbitrary RAND_MAX, so I just assume that it is greater than 65536 and use 16 bits of each random() return. There is also a bit of reformatting and whitespace cleanup here. Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [IPV4]: annotate struct in_ifaddrAl Viro2006-09-281-1/+1
| | | | | | | | | ifa_local, ifa_address, ifa_mask, ifa_broadcast and ifa_anycast are net-endian. Annotated them and variables that are inferred to be net-endian. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] uml: fix allocation sizeJeff Dike2006-09-271-4/+5
| | | | | | | | | | | Fix an instance of ptr=alloc(sizeof(ptr)). Grepping showed no more instances of this pattern. Also fixed the formatting in the area. Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: fix proc-vs-interrupt context spinlock deadlockPaolo 'Blaisorblade' Giarrusso2006-09-271-12/+4
| | | | | | | | | | | | | | | | | | | | | This spinlock can be taken on interrupt too, so spin_lock_irq[save] must be used. However, Documentation/networking/netdevices.txt explains we are called with rtnl_lock() held - so we don't need to care about other concurrent opens. Verified also in LDD3 and by direct checking. Also verified that the network layer (through a state machine) guarantees us that nobody will close the interface while it's being used. Please correct me if I'm wrong. Also, we must check we don't sleep with irqs disabled!!! But anyway, this is not news - we already can't sleep while holding a spinlock. Who says this is guaranted really by the present code? Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: clean our set_ether_macPaolo 'Blaisorblade' Giarrusso2006-09-261-8/+6
| | | | | | | | | | | Clean set_ether_mac usage. Maybe could also be removed, but surely it can't be a global function taking a void* argument. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Acked-by: Jeff Dike <jdike@addtoit.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] irq-flags: UM: Use the new IRQF_ constantsThomas Gleixner2006-07-021-1/+1
| | | | | | | | | | | | | Use the new IRQF_ constants and remove the SA_INTERRUPT define Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: balance list_add and list_del in the network driverJeff Dike2006-02-071-10/+19
| | | | | | | | | | | | | The network driver added an interface to the "opened" list when it was configured, not when it was brought up, and removed it when it was taken down. A sequence of ifconfig up, ifconfig down, ... caused it to be removed multiple times from the list without being added in between, resulting in a crash. This patch moves the add to when the interface is brought up. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: fix spinlock recursion and sleep-inside-spinlock in error pathPaolo 'Blaisorblade' Giarrusso2006-01-181-2/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | In this error path, when the interface has had a problem, we call dev_close(), which is disallowed for two reasons: *) takes again the UML internal spinlock, inside the ->stop method of this device *) can be called in process context only, while we're in interrupt context. I've also thought that calling dev_close() may be a wrong policy to follow, but it's not up to me to decide that. However, we may end up with multiple dev_close() queued on the same device. But the initial test for (dev->flags & IFF_UP) makes this harmless, though - and dev_close() is supposed to care about races with itself. So there's no harm in delaying the shutdown, IMHO. Something to mark the interface as "going to shutdown" would be appreciated, but dev_deactivate has the same problems as dev_close(), so we can't use it either. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: networking - clear transport-specific structurePaolo 'Blaisorblade' Giarrusso2006-01-181-1/+5
| | | | | | | | | | | | | | | | | Pre-clear transport-specific private structure before passing it down. In fact, I just got a slab corruption and kernel panic on exit because kfree() was called on a pointer which probably was never allocated, BUT hadn't been set to NULL by the driver. As the code is full of such errors, I've decided for now to go the safe way (we're talking about drivers), and to do the simple thing. I'm also starting to fix drivers, and already sent a patch for the daemon transport. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: free network IRQ correctlyJeff Dike2006-01-061-0/+2
| | | | | | | | | | | | | Free the network IRQ when closing down the network devices at shutdown. Delete the device from the opened devices list on close. These prevent an -EBADF when later disabling SIGIO on all extant descriptors and a complaint from free_irq about freeing the IRQ twice. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: Add static initializations and declarationsJeff Dike2006-01-061-2/+2
| | | | | | | | | | | Some structure fields were being dynamically initialized when they could be initialized at compile-time instead. This also makes some declarations static (in the C sense). Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: use kstrdupJeff Dike2006-01-061-1/+1
| | | | | | | | | | | | There were a bunch of calls to uml_strdup dating from before kstrdup was introduced. This changes those calls. It doesn't eliminate the definition since there is still a couple of calls in userspace code (which should probably call the libc strdup). Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/home/rmk/linux-2.6-drvmodelLinus Torvalds2005-11-111-4/+5
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| * [DRIVER MODEL] Convert platform drivers to use struct platform_driverRussell King2005-11-091-4/+5
| | | | | | | | | | | | | | | | | | This allows us to eliminate the casts in the drivers, and eventually remove the use of the device_driver function pointer methods for platform device drivers. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
* | [PATCH] uml_net: use ethtool_opsChristoph Hellwig2005-11-091-27/+11
|/ | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] uml: fix UML network driver endianness bugsBodo Stroesser2005-11-071-31/+7
| | | | | | | | | | | | | | | | | | ifa->ifa_address and ifa->ifa_mask are defined as __u32, but used as if they were char[4]. Network code uses htons() to convert it. So UML's method to access these fields is wrong for bigendians (e.g. s390) I replaced bytewise copying by memcpy(), maybe even that might be removed, if ifa->ifa_address/mask may be used immediately. Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Cc: <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Create platform_device.h to contain all the platform device details.Russell King2005-10-291-0/+1
| | | | | | | | Convert everyone who uses platform_bus_type to include linux/platform_device.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] uml: hot-unplug code cleanupJeff Dike2005-06-251-10/+21
| | | | | | | | | | | | | Clean up the hot-unplugging code. There is now an id procedure which is called to figure out what device we're talking to. The error messages from that are now done from mconsole_remove instead of the driver. remove is now called with the device number, after it has been checked, so doesn't need to do sanity checking on it. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: add and use generic hw_controller_type->releasePaolo 'Blaisorblade' Giarrusso2005-06-211-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With Chris Wedgwood <cw@f00f.org> Currently UML must explicitly call the UML-specific free_irq_by_irq_and_dev() for each free_irq call it's done. This is needed because ->shutdown and/or ->disable are only called when the last "action" for that irq is removed. Instead, for UML shared IRQs (UML IRQs are very often, if not always, shared), for each dev_id some setup is done, which must be cleared on the release of that fd. For instance, for each open console a new instance (i.e. new dev_id) of the same IRQ is requested(). Exactly, a fd is stored in an array (pollfds), which is after read by a host thread and passed to poll(). Each event registered by poll() triggers an interrupt. So, for each free_irq() we must remove the corresponding host fd from the table, which we do via this -release() method. In this patch we add an appropriate hook for this, and remove all uses of it by pointing the hook to the said procedure; this is safe to do since the said procedure. Also some cosmetic improvements are included. This is heavily based on some work by Chris Wedgwood, which however didn't get the patch merged for something I'd call a "misunderstanding" (the need for this patch wasn't cleanly explained, thus adding the generic hook was felt as undesirable). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> CC: Ingo Molnar <mingo@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+896
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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