- 17 Feb, 2010 25 commits
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Jan Kiszka authored
Use the reference management features of tty_port to look up and drop again the tty_struct associated with a capiminor. Signed-off-by:
Jan Kiszka <jan.kiszka@web.de> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Jan Kiszka authored
Properly associate/disassociate a capiminor object with its TTY via the install/cleanup handlers instead of trying to guess first open and last close. Signed-off-by:
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Jan Kiszka authored
Install a reference counter for capiminor objects. Acquire it when obtaining a capiminor from the array during capinc_tty_open, drop it when closing the tty again. Another reference is held for the hook-up with capincci. Signed-off-by:
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Jan Kiszka authored
No need to allocate a fixed major for this TTY, both capifs and udev make this transparent to the user. Signed-off-by:
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Jan Kiszka authored
Register capiminors dynamically with the TTY core so that udev can make them show up as the NCCIs appear or disappear. This removes the need to check if the capiminor requested in capinc_tty_open actually exists. And this completely obsoletes capifs which will be scheduled for removal in a later patch. Signed-off-by:
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Jan Kiszka authored
Return proper error code if tty_register_driver fails. In contrast, tty_unregister_driver cannot practically fail, so drop that error handling. Finally, mark capinc_tty_init/exit with __init/__exit. Signed-off-by:
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Jan Kiszka authored
Using a plain array of pointers simplifies the management of capiminors. Signed-off-by:
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Jan Kiszka authored
Replace open-coded NCCI list management with standard mechanisms. Signed-off-by:
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Jan Kiszka authored
capi_read still used interruptible_sleep_on, risking to miss a wakeup this way. Convert it to wait_event_interruptible. Signed-off-by:
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Jan Kiszka authored
Both capincci_alloc and capiminor_alloc run in non-atomic context, update their memory allocations accordingly. Signed-off-by:
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Jan Kiszka authored
Rename 'ncci_list_mtx' to 'lock', expressing that it now protects a larger set of capidev members: the NCCI list, ap.applid (ie. the registration of the application), and modifications of userflags. We do not need to protect each and every check for ap.applid because, once an application is registered, it will stay for the whole lifetime of the device. Also, there is no need to apply the capidev mutex during release (if there could be concurrent users, we would crash them anyway by freeing the device at the end of capi_release). Signed-off-by:
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Jan Kiszka authored
Fold capidev_alloc and capidev_free into capi_open and capi_release - there are no other users. Someone pushed a lock_kernel into capi_open. Drop it, we don't need it. Also remove the useless test from open that checks for private_data == NULL. Signed-off-by:
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Jan Kiszka authored
No need for anything "harder" here (specifically no need for irqsave...). Also, make the list removal the first operation of capidev_free to avoid dumping half-released devices via /proc. Signed-off-by:
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Jan Kiszka authored
Make the code a bit more readable be providing stub functions for the !CONFIG_ISDN_CAPI_MIDDLEWARE case. Though a few lines are moved around, this comes with no functional changes. Signed-off-by:
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Jan Kiszka authored
Drop the application rw-lock in favour of RCU. This synchronizes capi20_release against capi_ctr_handle_message which may dereference an application from (soft-)IRQ context. Any other access to the application list is now protected by the capi_controller_lock as well. This also allows to safely inspect applications for /proc dumping by holding capi_controller_lock. At this chance, drop some useless release_in_progress checks where we obtained the application pointer from the list (which becomes NULL on release_in_progress). Signed-off-by:
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Jan Kiszka authored
This patch applies the mutex so far only protecting the controller list to (almost) all accesses of controller data structures. It also reworks waiting on state changes in old_capi_manufacturer so that it no longer poll and holds a module reference to the controller owner while waiting (the latter was partly done already). Modification and checking of the blocked state remains racy by design, the caller is responsible for dealing with this. Signed-off-by:
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Jan Kiszka authored
Another step towards proper locking: Rework the callback provided to capidrv for controller state changes. This is so far attached to an application, which would require us to hold the corresponding lock across notification calls. But there is no direct relation between a controller up/down event and an application, so let's decouple them and provide a notifier call chain for those events instead. This notifier chain is first of all used internally. Here we request the highest priority to unsure that housekeeping work is done before any other notifications. The chain is exported via [un]register_capictr_notifier to our only user, capidrv, to replace the racy and unfixable capi20_set_callback. Signed-off-by:
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Jan Kiszka authored
This step prepares the application of proper controller locking: Push all state changing work into the notify handler that are called by capi_ctr_ready and capi_ctr_down, switch detach_capi_ctr to issue a synchronous ctr_down. Also ensure that we do not go through any action if the state did not change. Signed-off-by:
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Jan Kiszka authored
Turn the lock protecting registered capi drivers into a mutex and apply it consistently. Signed-off-by:
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Jan Kiszka authored
At least for our internal use, fix the misnomers that refer to a CAPI controller as 'card'. No functional changes. Signed-off-by:
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Jan Kiszka authored
The CVS revisions dumped by all CAPI modules are meaningless today. And that some CAPI module is loaded or removed does not necessarily deserve a message. Just keep the message of the central module, capi.ko, drop the rest. Signed-off-by:
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Jan Kiszka authored
Auto-mounting the capifs during module init prevents unloading its module. Instead, pin the filesystem as long as some NCCI node exists. Signed-off-by:
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Jan Kiszka authored
capifs_mnt->mnt_sb->s_root already contains what we need. Signed-off-by:
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Jan Kiszka authored
Instead of looking up the dentry of an NCCI node again in capifs_free_ncci pass the pointer via the capifs user. This patch also reduces the #ifdef mess in capi.c a bit as far as capifs was causing it. Signed-off-by:
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Jan Kiszka authored
When something went wrong during capifs_new_ncci, the looked up dentry was not properly released. Neither was the allocated inode. Refactor the function to avoid leaks. Signed-off-by:
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- 16 Feb, 2010 15 commits
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Eric W. Biederman authored
Stop computing the number of neighbour table settings we have by counting the number of binary sysctls. This behaviour was silly and meant that we could not add another neighbour table setting without also adding another binary sysctl. Don't pass the binary sysctl path for neighour table entries into neigh_sysctl_register. These parameters are no longer used and so are just dead code. Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
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Eric W. Biederman authored
Stop using the binary sysctl enumeartion in sysctl.h as an index into a per interface array. This leads to unnecessary binary sysctl number allocation, and a fragility in data structure and implementation because of unnecessary coupling. Signed-off-by:
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Joe Perches authored
Signed-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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Joe Perches authored
Make the output logging messages a bit more consistent. Signed-off-by:
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Joe Perches authored
Signed-off-by:
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Joe Perches authored
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Joe Perches authored
Make the output logging messages a bit more consistent. Signed-off-by:
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Joe Perches authored
Some unlikely(netif_msg_<foo>(sky2)) tests are also removed by this change. Signed-off-by:
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Joe Perches authored
Convert private DPRINTK macro uses to netif_<level> equivalents Remove #define DPRINTK Signed-off-by:
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David S. Miller authored
Fixes the following build failure: CC arch/sparc/kernel/sys_sparc32.o In file included from include/linux/netfilter_ipv4/ip_tables.h:28, from arch/sparc/kernel/sys_sparc32.c:46: include/linux/netfilter/x_tables.h:525: error: expected declaration specifiers or ‘...’ before ‘nf_hookfn’ Signed-off-by: -
Michael Chan authored
- Increase FTQ depth to 256 to ehnabce performance. - Fix RV2P context corruption on 5709 when flow control is enabled. Signed-off-by:
Michael Chan <mchan@broadcom.com> Signed-off-by:
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Patrick Rabau authored
This fixes the problem of dropping the carry when adding 2 32-bit values. Switch to use array indexing for better readability. Reported by and fix provided by Patrick Rabau. Signed-off-by:
Benjamin Li <benli@broadcom.com> Signed-off-by:
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Michael Chan authored
Remove unnecessary code that works around older versions of ethtool that can pass down invalid advertisement speed values. This old code prevents the user from specifying multiple advertisement values. The new code uses simple masking to mask out invalid advertisment bits. Reported-by:
Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by:
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Michael Chan authored
The current water marks are too high and can cause unnecessary flow control frames. Signed-off-by:
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Michael Chan authored
New status blocks are allocated during MTU change so we need to update this information for the cnic driver. Signed-off-by:
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