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* Fix "stuct", "strut", "struc" typosAlexey Dobriyan2006-01-14
| | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] TTY layer buffering revampAlan Cox2006-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The API and code have been through various bits of initial review by serial driver people but they definitely need to live somewhere for a while so the unconverted drivers can get knocked into shape, existing drivers that have been updated can be better tuned and bugs whacked out. This replaces the tty flip buffers with kmalloc objects in rings. In the normal situation for an IRQ driven serial port at typical speeds the behaviour is pretty much the same, two buffers end up allocated and the kernel cycles between them as before. When there are delays or at high speed we now behave far better as the buffer pool can grow a bit rather than lose characters. This also means that we can operate at higher speeds reliably. For drivers that receive characters in blocks (DMA based, USB and especially virtualisation) the layer allows a lot of driver specific code that works around the tty layer with private secondary queues to be removed. The IBM folks need this sort of layer, the smart serial port people do, the virtualisers do (because a virtualised tty typically operates at infinite speed rather than emulating 9600 baud). Finally many drivers had invalid and unsafe attempts to avoid buffer overflows by directly invoking tty methods extracted out of the innards of work queue structs. These are no longer needed and all go away. That fixes various random hangs with serial ports on overflow. The other change in here is to optimise the receive_room path that is used by some callers. It turns out that only one ldisc uses receive room except asa constant and it updates it far far less than the value is read. We thus make it a variable not a function call. I expect the code to contain bugs due to the size alone but I'll be watching and squashing them and feeding out new patches as it goes. Because the buffers now dynamically expand you should only run out of buffering when the kernel runs out of memory for real. That means a lot of the horrible hacks high performance drivers used to do just aren't needed any more. Description: tty_insert_flip_char is an old API and continues to work as before, as does tty_flip_buffer_push() [this is why many drivers dont need modification]. It does now also return the number of chars inserted There are also tty_buffer_request_room(tty, len) which asks for a buffer block of the length requested and returns the space found. This improves efficiency with hardware that knows how much to transfer. and tty_insert_flip_string_flags(tty, str, flags, len) to insert a string of characters and flags For a smart interface the usual code is len = tty_request_buffer_room(tty, amount_hardware_says); tty_insert_flip_string(tty, buffer_from_card, len); More description! At the moment tty buffers are attached directly to the tty. This is causing a lot of the problems related to tty layer locking, also problems at high speed and also with bursty data (such as occurs in virtualised environments) I'm working on ripping out the flip buffers and replacing them with a pool of dynamically allocated buffers. This allows both for old style "byte I/O" devices and also helps virtualisation and smart devices where large blocks of data suddenely materialise and need storing. So far so good. Lots of drivers reference tty->flip.*. Several of them also call directly and unsafely into function pointers it provides. This will all break. Most drivers can use tty_insert_flip_char which can be kept as an API but others need more. At the moment I've added the following interfaces, if people think more will be needed now is a good time to say int tty_buffer_request_room(tty, size) Try and ensure at least size bytes are available, returns actual room (may be zero). At the moment it just uses the flipbuf space but that will change. Repeated calls without characters being added are not cumulative. (ie if you call it with 1, 1, 1, and then 4 you'll have four characters of space. The other functions will also try and grow buffers in future but this will be a more efficient way when you know block sizes. int tty_insert_flip_char(tty, ch, flag) As before insert a character if there is room. Now returns 1 for success, 0 for failure. int tty_insert_flip_string(tty, str, len) Insert a block of non error characters. Returns the number inserted. int tty_prepare_flip_string(tty, strptr, len) Adjust the buffer to allow len characters to be added. Returns a buffer pointer in strptr and the length available. This allows for hardware that needs to use functions like insl or mencpy_fromio. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: John Hawkes <hawkes@sgi.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Eliminate __attribute__ ((packed)) warnings for gcc-4.1Jan Blunck2006-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | Since version 4.1 the gcc is warning about ignored attributes. This patch is using the equivalent attribute on the struct instead of on each of the structure or union members. GCC Manual: "Specifying Attributes of Types packed This attribute, attached to struct or union type definition, specifies that each member of the structure or union is placed to minimize the memory required. When attached to an enum definition, it indicates that the smallest integral type should be used. Specifying this attribute for struct and union types is equivalent to specifying the packed attribute on each of the structure or union members." Signed-off-by: Jan Blunck <jblunck@suse.de> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds2006-01-04
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| * gitignore: misc filesBrian Gerst2006-01-01
| | | | | | | | | | | | | | Ignore all files generated from *_shipped files, plus a few others. Signed-off-by: Brian Gerst <bgerst@didntduck.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* | Merge branch 'upstream-fixes'Jeff Garzik2005-11-18
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| * Merge branch 'halasa-hdlc' of git://git.tuxdriver.com/git/netdev-jwlJeff Garzik2005-11-18
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| | * [PATCH] Generic HDLC WAN drivers - disable netif_carrier_off()Krzysztof Halasa2005-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As we are currently unable to fix the problem with carrier and protocol state signaling in net core I've to disable netif_carrier_off() calls used by WAN protocol drivers. The attached patch should make them working again. The remaining netif_carrier_*() calls in hdlc_fr.c are fine as they don't touch the physical device. Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* | | Merge branch 'upstream-jgarzik' of git://git.tuxdriver.com/git/netdev-jwlJeff Garzik2005-11-18
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| * | [PATCH] Remove drivers/net/wan/lmc/lmc_prot.hTobias Klauser2005-11-16
| |/ | | | | | | | | | | | | | | | | | | "grep "lmc_prot\." -r ." didn't show anything. lmc_proto.h seems to have the correct prototypes, and is actually used. Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* / [PATCH] sdladrv.c build fixToni Mueller2005-11-15
|/ | | | | | | | gcc4 doesn't allow typecasted lvals. Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge ../bleed-2.6Greg KH2005-10-28
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| * Merge branch 'upstream-fixes'Jeff Garzik2005-10-03
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| * \ Merge /spare/repo/linux-2.6/Jeff Garzik2005-09-21
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| * | | [PATCH] drivers/net/wan/: possible cleanupsAdrian Bunk2005-09-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch contains possible cleanups including the following: - make needlessly global code static - #if 0 the following unused global function: - sdladrv.c: sdla_intde - remove the following unused global variable: - lmc_media.c: lmc_t1_cables - remove the following unneeded EXPORT_SYMBOL's: - cycx_drv.c: cycx_inten - sdladrv.c: sdla_inten - sdladrv.c: sdla_intde - sdladrv.c: sdla_intack - sdladrv.c: sdla_intr - syncppp.c: sppp_input - syncppp.c: sppp_change_mtu Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
| * | | [PATCH] Replace drivers/net/wan custom ctype macros with standard onesTobias Klauser2005-09-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the custom is_digit()/is_hex_digit() macros with isdigit()/isxdigit() from <linux/ctype.h> Additionaly remove unused macro is_alpha() from <linux/wanpipe.h> Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
| * | | [PATCH] drivers/net: fix-up schedule_timeout() usageNishanth Aravamudan2005-09-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use schedule_timeout_interruptible() instead of set_current_state()/schedule_timeout() to reduce kernel size. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* | | | [PATCH] Driver Core: fix up all callers of class_device_create()Greg Kroah-Hartman2005-10-28
| |_|/ |/| | | | | | | | | | | | | | | | | | | | The previous patch adding the ability to nest struct class_device changed the paramaters to the call class_device_create(). This patch fixes up all in-kernel users of the function. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | [IPV4]: Replace __in_dev_get with __in_dev_get_rcu/rtnlHerbert Xu2005-10-03
| |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following patch renames __in_dev_get() to __in_dev_get_rtnl() and introduces __in_dev_get_rcu() to cover the second case. 1) RCU with refcnt should use in_dev_get(). 2) RCU without refcnt should use __in_dev_get_rcu(). 3) All others must hold RTNL and use __in_dev_get_rtnl(). There is one exception in net/ipv4/route.c which is in fact a pre-existing race condition. I've marked it as such so that we remember to fix it. This patch is based on suggestions and prior work by Suzanne Wood and Paul McKenney. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* | [WAN] hdlc_cisco: Fix regression introduced by skb->tail changes.Krzysztof Halasa2005-09-19
|/ | | | | | | | | | | | | | The following commit breaks cisco mode with my WAN drivers: author David S. Miller <davem@davemloft.net> Tue, 28 Jun 2005 22:25:31 +0000 (15:25 -0700) commit 689be43945e9ca7dd704522e55af1b8a73a994d3 "[NET]: Remove gratuitous use of skb->tail in network drivers." The following patch fixes it - please apply (cisco_hard_header does skb_push(4 bytes)). Signed-off-by: David S. Miller <davem@davemloft.net>
* [kernel-doc] fix various DocBook build problems/warningsJeff Garzik2005-09-07
| | | | | | | Most serious is fixing include/sound/pcm.h, which breaks the DocBook build. The other stuff is just filling in things that cause warnings.
* [NET]: Kill skb->real_devDavid S. Miller2005-08-29
| | | | | | | | | | | Bonding just wants the device before the skb_bond() decapsulation occurs, so simply pass that original device into packet_type->func() as an argument. It remains to be seen whether we can use this same exact thing to get rid of skb->input_dev as well. Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Kill skb->listDavid S. Miller2005-08-29
| | | | | | | | | | | | | | Remove the "list" member of struct sk_buff, as it is entirely redundant. All SKB list removal callers know which list the SKB is on, so storing this in sk_buff does nothing other than taking up some space. Two tricky bits were SCTP, which I took care of, and two ATM drivers which Francois Romieu <romieu@fr.zoreil.com> fixed up. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
* [PATCH] net/cycx_drv: replace delay_cycx() with msleep_interruptible()Nishanth Aravamudan2005-08-19
| | | | | | | | Use msleep_interruptible() instead of delay_cycx() to guarantee the task delays as expected. Remove the prototype and definition of delay_cycx(). Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [WAN]: drivers/net/wan/: use of time_after macroMarcelo Feitoza Parisi2005-07-15
| | | | | | | | | | | From: Marcelo Feitoza Parisi <marcelo@feitoza.com.br> Use of the time_after() macro, defined at linux/jiffies.h, which deal with wrapping correctly and are nicer to read. Signed-off-by: Marcelo Feitoza Parisi <marcelo@feitoza.com.br> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: __be'ify *_type_trans()Alexey Dobriyan2005-07-12
| | | | | | | tr_type_trans(), hippi_type_trans() left as-is. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [NET]: Remove gratuitous use of skb->tail in network drivers.David S. Miller2005-06-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many drivers use skb->tail unnecessarily. In these situations, the code roughly looks like: dev = dev_alloc_skb(...); [optional] skb_reserve(skb, ...); ... skb->tail ... But even if the skb_reserve() happens, skb->data equals skb->tail. So it doesn't make any sense to use anything other than skb->data in these cases. Another case was the s2io.c driver directly mucking with the skb->data and skb->tail pointers. It really just wanted to do an skb_reserve(), so that's what the code was changed to do instead. Another reason I'm making this change as it allows some SKB cleanups I have planned simpler to merge. In those cleanups, skb->head, skb->tail, and skb->end pointers are removed, and replaced with skb->head_room and skb->tail_room integers. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] net/farsync: add set_current_state() before schedule_timeout()Nishanth Aravamudan2005-06-26
| | | | | | | | | | Insert set_current_state() before schedule_timeout() so the function delays as expected. Without the addition, schedule_timeout() will return immediately. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Maximilian Attems <janitor@sternwelten.at> Signed-off-by: Domen Puncer <domen@coderock.org>
* drivers/net/: Use the DMA_{64,32}BIT_MASK constantsDomen Puncer2005-06-26
| | | | | | | | | | | | | Use the DMA_{64,32}BIT_MASK constants from dma-mapping.h when calling pci_set_dma_mask() or pci_set_consistent_dma_mask() This patch includes dma-mapping.h explicitly because it caused errors on some architectures otherwise. See http://marc.theaimsgroup.com/?t=108001993000001&r=1&w=2 for details Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Signed-off-by: Domen Puncer <domen@coderock.org>
* [PATCH] Remove duplicate file in Documentation/networking ↵Tobias Klauser2005-06-25
| | | | | | | | | | | | (drivers_net_wan_Kconfig) wanpipe.txt and wan-router.txt in Documentation/networking contain the exact same information (diff between the two shows no drivers/net/wan/Kconfig. Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Convert users to tty_unregister_ldisc()Alexey Dobriyan2005-06-23
| | | | | | | | tty_register_ldisc(N_FOO, NULL) => tty_unregister_ldisc(N_FOO) Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] class: convert drivers/* to use the new class api instead of ↵gregkh@suse.de2005-06-20
| | | | | | class_simple Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Automatic merge of /spare/repo/netdev-2.6 branch iff-running2005-06-04
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| * [netdrvrs] Use netif_carrier_* instead of IFF_RUNNING2005-05-12
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* | [PATCH] Generic HDLC updateKrzysztof Halasa2005-05-15
|/ | | | | | | | | | | | | | | | The attached patch updates generic HDLC to version 1.18. FR Cisco LMI production-tested. Please apply to Linux 2.6. Thanks. Changes: - doc updates - added Cisco LMI support to Frame-Relay code - cleaned hdlc_fr.c a bit, removed some orphaned #defines etc. - fixed a problem with non-functional LMI in FR DCE mode. - changed diagnostic messages to better conform to FR standards - all protocols: information about carrier changes (DCD line) is now printed to kernel logs. Signed-Off-By: Krzysztof Halasa <khc@pm.waw.pl>
* [PATCH] ISA DMA Kconfig fixes - part 3Al Viro2005-05-04
| | | | | | | Drivers that expect ISA DMA API are marked as such in Kconfig. Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [WAN]: kfree of NULL pointer is validJesper Juhl2005-05-03
| | | | | | | | | | | kfree(0) is perfectly valid, checking pointers for NULL before calling kfree() on them is redundant. The patch below cleans away a few such redundant checks (and while I was around some of those bits I couldn't stop myself from making a few tiny whitespace changes as well). Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> Acked-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] PC300 pci_enable_device fixMarcelo Tosatti2005-04-26
| | | | | | | | | | | | | | | Call pci_enable_device() before looking at IRQ and resources, and pci_disable_device() when shutting the interface down. The driver requires this fix or the "pci=routeirq" workaround on 2.6.10 and later kernels. Reported and tested by Artur Lipowski. From: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
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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