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2009-02-12wimax: fix oops in wimax_dev_get_by_genl_info() when looking up non-wimax ifaceInaky Perez-Gonzalez
When a non-wimax interface is looked up by the stack, a bad pointer is returned when the looked-up interface is not found in the list (of registered WiMAX interfaces). This causes an oops in the caller when trying to use the pointer. Fix by properly setting the pointer to NULL if we don't exit from the list_for_each() with a found entry. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-29wimax: fix build issue when debugfs is disabledInaky Perez-Gonzalez
As reported by Toralf Förster and Randy Dunlap. - http://linuxwimax.org/pipermail/wimax/2009-January/000460.html - http://lkml.org/lkml/2009/1/29/279 The definitions needed for the wimax stack and i2400m driver debug infrastructure was, by mistake, compiled depending on CONFIG_DEBUG_FS (by them being placed in the debugfs.c files); thus the build broke in 2.6.29-rc3 when debugging was enabled (CONFIG_WIMAX_DEBUG) and DEBUG_FS was disabled. These definitions are always needed if debug is enabled at compile time (independently of DEBUG_FS being or not enabled), so moving them to a file that is always compiled fixes the issue. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-08wimax: testing for rfkill support should also test for CONFIG_RFKILL_MODULEInaky Perez-Gonzalez
Current WiMAX rfkill code is missing the case where rfkill is compiled in as modules and works only when rfkill is compiled in. This is not correct. Fixed to test for CONFIG_RFKILL or CONFIG_RKILL_MODULE. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-08wimax: fix kconfig interactions with rfkill and input layersInaky Perez-Gonzalez
WiMAX can work without RFKILL, but it was missing a check to make sure RFKILL is not being made a module with wimax compiled into the kernel. This caused failed builds in s390, where CONFIG_INPUT is always off. When RFKILL is enabled, the code uses the input layer to report hardware switch changes; thus, if RFKILL is enabled, INPUT has to be too. It also needs to display some message when INPUT is disabled that explains why WiMAX is not selectable. (issues found by Randy Dunlap in the linux-next tree). Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-08wimax: fix '#ifndef CONFIG_BUG' layout to avoid warningInaky Perez-Gonzalez
Reported by Randy Dunlap: > Also, this warning needs to be fixed: > > linux-next-20090106/net/wimax/id-table.c:133: warning: ISO C90 > forbids mixed declarations and code Move the return on #defined(CONFIG_BUG) below the variable declarations so it doesn't violate ISO C90. On wimax_id_table_release() we want to do a debug check if CONFIG_BUG is enabled. However, we also want the debug code to be always compiled to ensure there is no bitrot. It will be optimized out by the compiler when CONFIG_BUG is disabled. Added a note to the function header stating this. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-07wimax: Makefile, Kconfig and docbook linkage for the stackInaky Perez-Gonzalez
This patch provides Makefile and KConfig for the WiMAX stack, integrating them into the networking stack's Makefile, Kconfig and doc-book templates. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07wimax: debugfs controlsInaky Perez-Gonzalez
Expose knobs to control the stack's debug output. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07wimax: basic API: kernel/user messaging, rfkill and resetInaky Perez-Gonzalez
Implements the three basic operations provided by the stack's control interface to WiMAX devices: - Messaging channel between user space and driver/device This implements a direct communication channel between user space and the driver/device, by which free form messages can be sent back and forth. This is intended for device-specific features, vendor quirks, etc. - RF-kill framework integration Provide most of the RF-Kill integration for WiMAX drivers so that all device drivers have to do is after wimax_dev_add() is call wimax_report_rfkill_{hw,sw}() to update initial state and then every time it changes. Provides wimax_rfkill() for the kernel to call to set software RF-Kill status and/or query current hardware and software switch status. Exports wimax_rfkill() over generic netlink to user space. - Reset a WiMAX device Provides wimax_reset() for the kernel to reset a wimax device as needed and exports it over generic netlink to user space. This API is clearly limited, as it still provides no way to do the basic scan, connect and disconnect in a hardware independent way. The WiMAX case is more complex than WiFi due to the way networks are discovered and provisioned. The next developments are to add the basic operations so they can be offerent by different drivers. However, we'd like to get more vendors to jump in and provide feedback of how the user/kernel API/abstraction layer should be. The user space code for the i2400m, as of now, uses the messaging channel, but that will change as the API evolves. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07wimax: generic device management (registration, deregistration, lookup)Inaky Perez-Gonzalez
Implements the basic life cycles of a 'struct wimax_dev', some common generic netlink functionality for marshalling calls to user space, and the device state machine. For looking up net devices based on their generic netlink family IDs, use a low overhead method that optimizes for the case where most systems have a single WiMAX device, or at most, a very low number of WiMAX adaptors. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07wimax: debug macros and debug settings for the WiMAX stackInaky Perez-Gonzalez
This file contains a simple debug framework that is used in the stack; it allows the debug level to be controlled at compile-time (so the debug code is optimized out) and at run-time (for what wasn't compiled out). This is eventually going to be moved to use dynamic_printk(). Just need to find time to do it. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-01-07wimax: internal API for the kernel space WiMAX stackInaky Perez-Gonzalez
This file contains declarations and definitions used by the different submodules of the stack. Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>