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* [HAMRADIO]: Remove remaining SET_MODULE_OWNER calls from hamradio drivers.Ralf Baechle DL5RB2006-05-04
| | | | | Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] Remove MODULE_PARMRusty Russell2006-03-25
| | | | | | | | | | MODULE_PARM was actually breaking: recent gcc version optimize them out as unused. It's time to replace the last users, which are generally in the most unloved drivers anyway. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge branch 'viro'Jeff Garzik2006-02-09
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| * [PATCH] remove bogus asm/bug.h includes.Al Viro2006-02-07
| | | | | | | | | | | | | | A bunch of asm/bug.h includes are both not needed (since it will get pulled anyway) and bogus (since they are done too early). Removed. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | [PATCH] drivers/net/*: use time_after() and friendsMarcelo Feitoza Parisi2006-01-17
|/ | | | | | | | | | | They deal with wrapping correctly and are nicer to read. Also make jiffies-holding variables unsigned long. Signed-off-by: Marcelo Feitoza Parisi <marcelo@feitoza.com.br> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [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>
* [AX25] mkiss: Drop spinlock before sleeping call.Ralf Baechle2006-01-09
| | | | | | | | With the previous missing-unlock fix the spinlock is dropped only after the tty->driver->write() call which might sleep. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [AX25/MKISS]: unbalanced spinlock_bh in ax_encaps()Francois Romieu2006-01-07
| | | | | | | | The unlocking disappeared during commit 5793f4be23f0171b4999ca68a39a9157b44139f3. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] drivers/net/hamradio/dmascc.c: remove dmascc_setup()Adrian Bunk2005-11-05
| | | | | | | | It seems dmascc_setup() is a leftover time before dmascc_init() was there. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
* drivers/net: Remove pointless checks for NULL prior to calling kfree()Jesper Juhl2005-10-28
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* [PATCH] Remove unused header.Ralf Baechle2005-10-19
| | | | | | | | | | mkiss.h has been integrated into mkiss.c earlier. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> drivers/net/hamradio/mkiss.h | 62 ------------------------------------------- 1 files changed, 62 deletions(-) Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] Initialize the .owner field the tty_ldisc structure.Ralf Baechle2005-10-18
| | | | | | | If .owner isn't set the module can be unloaded even while still active. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] SMACK support for mkissRalf Baechle2005-10-18
| | | | | | | | | | | | | SMACK (Stuttgart Modified Amateurradio CRC KISS) is a KISS variant that uses CRC16 checksums to secure data transfers between the modem and host. It's also used to communicate over a pty to applications such as Wampes. Patches for Linux 2.4 by Thomas Osterried DL9SAU, upgraded to the latest mkiss 2.6 mkiss driver by me. Signed-off-by: Thomas Osterried DL9SAU <thomas@x-berg.in-berlin.de> Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] rcu in bpqether driver.Ralf Baechle2005-10-18
| | | | | | | | | | | | | | | | | | | | | | | | From Suzanne Wood <suzannew@cs.pdx.edu>: Clarify RCU implementation in bpqether.c. Because bpq_new_device() calls list_add_rcu() and bpq_free_device() calls list_del_rcu(), substitute list_for_each_entry_rcu() for list_for_each_entry() in bpq_get_ax25_dev() and in bpq_seq_start(). Add rcu dereference protection in bpq_seq_next(). The rcu_read_lock()/unlock() in bpq_device_event() are removed because netdev event handlers are called with RTNL locking in place. FYI: bpq_free_device() calls list_del_rcu() which, per list.h, requires synchronize_rcu() which can block or call_rcu() or call_rcu_bh() which cannot block. Herbert Xu notes that synchronization is done here by unregister_netdevice(). This calls synchronize_net() which in turn uses synchronize_rcu(). Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] AX.25: Convert mkiss.c to DEFINE_RWLOCKRalf Baechle2005-10-04
| | | | | | | | | Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> drivers/net/hamradio/mkiss.c | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-) Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [PATCH] AX.25: Delete debug printk from mkiss driverRalf Baechle2005-10-04
| | | | | | | | | | Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> -- drivers/net/hamradio/mkiss.c | 1 - 1 files changed, 1 deletion(-) Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [AX.25]: Rename ax25_encapsulate to ax25_hard_headerRalf Baechle2005-09-12
| | | | | | | | Rename ax25_encapsulate to ax25_hard_header which these days more accurately describes what the function is supposed to do. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [HAMRADIO]: driver cleanupsRalf Baechle2005-09-12
| | | | | | | | | | | | Misc related cleanups in hamradio drivers: o Use symbolic constants instead of magic numbers o Don't try to handle the case where AX.25 isn't configured - the kernel configuration doesn't permit that. o Remove useless headers Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] timer initialization cleanup: DEFINE_TIMERIngo Molnar2005-09-09
| | | | | | | | | | Clean up timer initialization by introducing DEFINE_TIMER a'la DEFINE_SPINLOCK. Build and boot-tested on x86. A similar patch has been been in the -RT tree for some time. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [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>
* Merge refs/heads/upstream from ↵Linus Torvalds2005-08-29
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6
| * [PATCH] SMP rewrite of mkissRalf Baechle2005-08-27
| | | | | | | | | | | | | | | | Rewrite the mkiss driver to make it SMP-proof following the example of 6pack.c. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
| * Merge /spare/repo/linux-2.6/Jeff Garzik2005-08-11
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| * | [PATCH] Use time_before in hamradio driversMarcelo Feitoza Parisi2005-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use of time_before() 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: Ralf Baechle DL5RB <ralf@linux-mips.org> baycom_epp.c | 3 ++- baycom_par.c | 3 ++- baycom_ser_fdx.c | 3 ++- baycom_ser_hdx.c | 3 ++- mkiss.c | 3 ++- 5 files changed, 10 insertions(+), 5 deletions(-) Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* | | [PATCH] Fix 6pack setting of MAC addressRalf Baechle2005-08-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't check type of sax25_family; dev_set_mac_address has already done that before and anyway, the type to check against would have been ARPHRD_AX25. We only got away because AF_AX25 and ARPHRD_AX25 both happen to be defined to the same value. Don't check sax25_ndigis either; it's value is insignificant for the purpose of setting the MAC address and the check has shown to break some application software for no good reason. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* | | [PATCH] 6pack Timer initializationRalf Baechle2005-08-27
| |/ |/| | | | | | | | | | | | | | | I dropped the timer initialization bits by accident when sending the p-persistence fix. This patch gets the driver to work again on halfduplex links. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* | [PATCH] 6pack persistence fixRalf Baechle DL5RB2005-08-10
| | | | | | | | | | | | | | | | | | | | | | Fix the p-persistence CSMA algorithm which in simplex mode was starting with a slottime delay before doing anything else as if there was carrier collision resulting in bad performance on simplex links. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Acked-by: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] SMP fix for 6pack driverRalf Baechle2005-07-31
|/ | | | | | | | | | | | Drivers really only work well in SMP if they actually can be selected. This is a leftover from the time when the 6pack drive only used to be a bitrotten variant of the slip driver. Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org> Kconfig | 2 +- 1 files changed, 1 insertion(+), 1 deletion(-) Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
* [NET]: Transform skb_queue_len() binary tests into skb_queue_empty()David S. Miller2005-07-08
| | | | | | | | | | | | | This is part of the grand scheme to eliminate the qlen member of skb_queue_head, and subsequently remove the 'list' member of sk_buff. Most users of skb_queue_len() want to know if the queue is empty or not, and that's trivially done with skb_queue_empty() which doesn't use the skb_queue_head->qlen member and instead uses the queue list emptyness as the test. Signed-off-by: David S. Miller <davem@davemloft.net>
* [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] drivers/net/hamradio/baycom_epp.c: cleanupsAdrian Bunk2005-06-02
| | | | | | | | | | | | | The times when tricky goto's produced better codes are long gone. This patch should express the same in a better way. (Also fixes the final gcc-4.0 x86 compile error) Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [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>
* [AX25] Introduce ax25_type_transArnaldo Carvalho de Melo2005-04-24
| | | | | | | | | Replacing the open coded equivalents and making ax25 look more like a linux network protocol, i.e. more similar to inet. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* 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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