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2017-12-15batman-adv: Fix kernel-doc references to struct membersSven Eckelmann
The correct syntax to create references in kernel-doc to a struct member is not "struct_name::member"" but "&struct_name->member" or "&struct_name.member". The correct syntax is required to get the correct cross-referencing in the reStructuredText text output. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: Use inline kernel-doc for enum/structSven Eckelmann
The inline kernel-doc comments make it easier to keep changes to the struct/enum synchronized with the documentation of the it. And it makes it easier for larger structures like struct batadv_priv to read the documentation inside the code. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: Use parentheses in function kernel-docSven Eckelmann
The documentation describing kernel-doc comments for functions ("How to format kernel-doc comments") uses parentheses at the end of the function name. Using this format allows to use a consistent style when adding documentation to a function and when referencing this function in a different kernel-doc section. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: Add missing kernel-doc to packet.hSven Eckelmann
Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: Remove unused sched.h includeSven Eckelmann
The linux/wait.h include was removed with commit 421d988b2c08 ("batman-adv: Consolidate logging related functions"). The previously required (but not unused) linux/sched.h include can also be dropped now. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: include kobject.h for kobject_* functionsSven Eckelmann
The linux/kobject.h provides the kobject_* function declarations and should therefore be included directly before they are used. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: Include net.h for net_ratelimited_functionSven Eckelmann
The linux/net.h provides the net_ratelimited_function. It should therefore be included directly before it is used. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: include build_bug.h for BUILD_BUG_ON defineSven Eckelmann
commit bc6245e5efd7 ("bug: split BUILD_BUG stuff out into <linux/build_bug.h>") added a new header for BUILD_BUG_ON. It should therefore be included instead of linux/bug.h Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: include gfp.h for GFP_* definesSven Eckelmann
The linux/gfp.h provides the GFP_ATOMIC and GFP_KERNEL define. It should therefore be included instead of linux/fs.h. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: Add license header to KconfigSven Eckelmann
The last remaining file without license notice and/or SPDX license identifier under net/batman-adv/ is the Kconfig. It should have been licensed under the same conditions as the rest of batman-adv and the Makefile which uses the CONFIG_* variables from Kconfig. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-15batman-adv: Add SPDX license identifier above copyright headerSven Eckelmann
The "Linux kernel licensing rules" require that each file has a SPDX license identifier as first line (and sometimes as second line). The FSFE REUSE practices [1] would also require the same tags but have no restrictions on the placement in the source file. Using the "Linux kernel licensing rules" is therefore also fulfilling the FSFE REUSE practices requirements at the same time. [1] https://reuse.software/practices/ Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-04batman-adv: Deinline batadv_orig_hash_find, save 7339 bytesDenys Vlasenko
This function compiles to 288 bytes of machine code for Linux 4.14 on Debian Stretch amd64 and (6.3.0-18) with the default configuration. 27 callsites (25 used in default config). text data bss dec hex filename 179291 10317 4416 194024 2f5e8 batman-adv.ko.pre 171952 10317 4416 186685 2d93d batman-adv.ko.post Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> [sven@narfation.org: Fix includes, correct sizes+counts in commit message] Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-04batman-adv: Start new development cycleSimon Wunderlich
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-04batman-adv: Fix lock for ogm cnt access in batadv_iv_ogm_calc_tqSven Eckelmann
The originator node object orig_neigh_node is used to when accessing the bcast_own(_sum) and real_packet_count information. The access to them has to be protected with the spinlock in orig_neigh_node. But the function uses the lock in orig_node instead. This is incorrect because they could be two different originator node objects. Fixes: 0ede9f41b217 ("batman-adv: protect bit operations to count OGMs with spinlock") Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-02batman-adv: Fix kernel-doc for timer functionsSven Eckelmann
The commit e99e88a9d2b0 ("treewide: setup_timer() -> timer_setup()") changed the argument name and type of the timer function but didn't adjust the kernel-doc of these functions. Signed-off-by: Sven Eckelmann <sven@narfation.org> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-01batman-adv: Fix check of retrieved orig_gw in batadv_v_gw_is_eligibleSven Eckelmann
The batadv_v_gw_is_eligible function already assumes that orig_node is not NULL. But batadv_gw_node_get may have failed to find the originator. It must therefore be checked whether the batadv_gw_node_get failed and not whether orig_node is NULL to detect this error. Fixes: 50164d8f500f ("batman-adv: B.A.T.M.A.N. V - implement GW selection logic") Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Acked-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-12-01batman-adv: Always initialize fragment header prioritySven Eckelmann
The batman-adv unuicast fragment header contains 3 bits for the priority of the packet. These bits will be initialized when the skb->priority contains a value between 256 and 263. But otherwise, the uninitialized bits from the stack will be used. Fixes: c0f25c802b33 ("batman-adv: Include frame priority in fragment header") Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-11-27net: annotate ->poll() instancesAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-21treewide: setup_timer() -> timer_setup()Kees Cook
This converts all remaining cases of the old setup_timer() API into using timer_setup(), where the callback argument is the structure already holding the struct timer_list. These should have no behavioral changes, since they just change which pointer is passed into the callback with the same available pointers after conversion. It handles the following examples, in addition to some other variations. Casting from unsigned long: void my_callback(unsigned long data) { struct something *ptr = (struct something *)data; ... } ... setup_timer(&ptr->my_timer, my_callback, ptr); and forced object casts: void my_callback(struct something *ptr) { ... } ... setup_timer(&ptr->my_timer, my_callback, (unsigned long)ptr); become: void my_callback(struct timer_list *t) { struct something *ptr = from_timer(ptr, t, my_timer); ... } ... timer_setup(&ptr->my_timer, my_callback, 0); Direct function assignments: void my_callback(unsigned long data) { struct something *ptr = (struct something *)data; ... } ... ptr->my_timer.function = my_callback; have a temporary cast added, along with converting the args: void my_callback(struct timer_list *t) { struct something *ptr = from_timer(ptr, t, my_timer); ... } ... ptr->my_timer.function = (TIMER_FUNC_TYPE)my_callback; And finally, callbacks without a data assignment: void my_callback(unsigned long data) { ... } ... setup_timer(&ptr->my_timer, my_callback, 0); have their argument renamed to verify they're unused during conversion: void my_callback(struct timer_list *unused) { ... } ... timer_setup(&ptr->my_timer, my_callback, 0); The conversion is done with the following Coccinelle script: spatch --very-quiet --all-includes --include-headers \ -I ./arch/x86/include -I ./arch/x86/include/generated \ -I ./include -I ./arch/x86/include/uapi \ -I ./arch/x86/include/generated/uapi -I ./include/uapi \ -I ./include/generated/uapi --include ./include/linux/kconfig.h \ --dir . \ --cocci-file ~/src/data/timer_setup.cocci @fix_address_of@ expression e; @@ setup_timer( -&(e) +&e , ...) // Update any raw setup_timer() usages that have a NULL callback, but // would otherwise match change_timer_function_usage, since the latter // will update all function assignments done in the face of a NULL // function initialization in setup_timer(). @change_timer_function_usage_NULL@ expression _E; identifier _timer; type _cast_data; @@ ( -setup_timer(&_E->_timer, NULL, _E); +timer_setup(&_E->_timer, NULL, 0); | -setup_timer(&_E->_timer, NULL, (_cast_data)_E); +timer_setup(&_E->_timer, NULL, 0); | -setup_timer(&_E._timer, NULL, &_E); +timer_setup(&_E._timer, NULL, 0); | -setup_timer(&_E._timer, NULL, (_cast_data)&_E); +timer_setup(&_E._timer, NULL, 0); ) @change_timer_function_usage@ expression _E; identifier _timer; struct timer_list _stl; identifier _callback; type _cast_func, _cast_data; @@ ( -setup_timer(&_E->_timer, _callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, &_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, &_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)&_callback, _E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E._timer, _callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, &_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, &_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)&_E); +timer_setup(&_E._timer, _callback, 0); | _E->_timer@_stl.function = _callback; | _E->_timer@_stl.function = &_callback; | _E->_timer@_stl.function = (_cast_func)_callback; | _E->_timer@_stl.function = (_cast_func)&_callback; | _E._timer@_stl.function = _callback; | _E._timer@_stl.function = &_callback; | _E._timer@_stl.function = (_cast_func)_callback; | _E._timer@_stl.function = (_cast_func)&_callback; ) // callback(unsigned long arg) @change_callback_handle_cast depends on change_timer_function_usage@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _origtype; identifier _origarg; type _handletype; identifier _handle; @@ void _callback( -_origtype _origarg +struct timer_list *t ) { ( ... when != _origarg _handletype *_handle = -(_handletype *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle = -(void *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(_handletype *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(void *)_origarg; +from_timer(_handle, t, _timer); ... when != _origarg ) } // callback(unsigned long arg) without existing variable @change_callback_handle_cast_no_arg depends on change_timer_function_usage && !change_callback_handle_cast@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _origtype; identifier _origarg; type _handletype; @@ void _callback( -_origtype _origarg +struct timer_list *t ) { + _handletype *_origarg = from_timer(_origarg, t, _timer); + ... when != _origarg - (_handletype *)_origarg + _origarg ... when != _origarg } // Avoid already converted callbacks. @match_callback_converted depends on change_timer_function_usage && !change_callback_handle_cast && !change_callback_handle_cast_no_arg@ identifier change_timer_function_usage._callback; identifier t; @@ void _callback(struct timer_list *t) { ... } // callback(struct something *handle) @change_callback_handle_arg depends on change_timer_function_usage && !match_callback_converted && !change_callback_handle_cast && !change_callback_handle_cast_no_arg@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; @@ void _callback( -_handletype *_handle +struct timer_list *t ) { + _handletype *_handle = from_timer(_handle, t, _timer); ... } // If change_callback_handle_arg ran on an empty function, remove // the added handler. @unchange_callback_handle_arg depends on change_timer_function_usage && change_callback_handle_arg@ identifier change_timer_function_usage._callback; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; identifier t; @@ void _callback(struct timer_list *t) { - _handletype *_handle = from_timer(_handle, t, _timer); } // We only want to refactor the setup_timer() data argument if we've found // the matching callback. This undoes changes in change_timer_function_usage. @unchange_timer_function_usage depends on change_timer_function_usage && !change_callback_handle_cast && !change_callback_handle_cast_no_arg && !change_callback_handle_arg@ expression change_timer_function_usage._E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type change_timer_function_usage._cast_data; @@ ( -timer_setup(&_E->_timer, _callback, 0); +setup_timer(&_E->_timer, _callback, (_cast_data)_E); | -timer_setup(&_E._timer, _callback, 0); +setup_timer(&_E._timer, _callback, (_cast_data)&_E); ) // If we fixed a callback from a .function assignment, fix the // assignment cast now. @change_timer_function_assignment depends on change_timer_function_usage && (change_callback_handle_cast || change_callback_handle_cast_no_arg || change_callback_handle_arg)@ expression change_timer_function_usage._E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_func; typedef TIMER_FUNC_TYPE; @@ ( _E->_timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -&_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -(_cast_func)_callback; +(TIMER_FUNC_TYPE)_callback ; | _E->_timer.function = -(_cast_func)&_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -&_callback; +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -(_cast_func)_callback +(TIMER_FUNC_TYPE)_callback ; | _E._timer.function = -(_cast_func)&_callback +(TIMER_FUNC_TYPE)_callback ; ) // Sometimes timer functions are called directly. Replace matched args. @change_timer_function_calls depends on change_timer_function_usage && (change_callback_handle_cast || change_callback_handle_cast_no_arg || change_callback_handle_arg)@ expression _E; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_data; @@ _callback( ( -(_cast_data)_E +&_E->_timer | -(_cast_data)&_E +&_E._timer | -_E +&_E->_timer ) ) // If a timer has been configured without a data argument, it can be // converted without regard to the callback argument, since it is unused. @match_timer_function_unused_data@ expression _E; identifier _timer; identifier _callback; @@ ( -setup_timer(&_E->_timer, _callback, 0); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, 0L); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E->_timer, _callback, 0UL); +timer_setup(&_E->_timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0L); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_E._timer, _callback, 0UL); +timer_setup(&_E._timer, _callback, 0); | -setup_timer(&_timer, _callback, 0); +timer_setup(&_timer, _callback, 0); | -setup_timer(&_timer, _callback, 0L); +timer_setup(&_timer, _callback, 0); | -setup_timer(&_timer, _callback, 0UL); +timer_setup(&_timer, _callback, 0); | -setup_timer(_timer, _callback, 0); +timer_setup(_timer, _callback, 0); | -setup_timer(_timer, _callback, 0L); +timer_setup(_timer, _callback, 0); | -setup_timer(_timer, _callback, 0UL); +timer_setup(_timer, _callback, 0); ) @change_callback_unused_data depends on match_timer_function_unused_data@ identifier match_timer_function_unused_data._callback; type _origtype; identifier _origarg; @@ void _callback( -_origtype _origarg +struct timer_list *unused ) { ... when != _origarg } Signed-off-by: Kees Cook <keescook@chromium.org>
2017-10-17batman-adv: Avoid spurious warnings from bat_v neigh_cmp implementationSven Eckelmann
The neighbor compare API implementation for B.A.T.M.A.N. V checks whether the neigh_ifinfo for this neighbor on a specific interface exists. A warning is printed when it isn't found. But it is not called inside a lock which would prevent that this information is lost right before batadv_neigh_ifinfo_get. It must therefore be expected that batadv_v_neigh_(cmp|is_sob) might not be able to get the requested neigh_ifinfo. A WARN_ON for such a situation seems not to be appropriate because this will only flood the kernel logs. The warnings must therefore be removed. Signed-off-by: Sven Eckelmann <sven.eckelmann@openmesh.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-10-12batman-adv: Add missing kerneldoc for extackSven Eckelmann
The parameter extack was added to batadv_softif_slave_add without adding the kernel-doc for it. This caused kernel-doc warnings. Signed-off-by: Sven Eckelmann <sven@narfation.org> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-10-06Merge tag 'batadv-next-for-davem-20171006' of ↵David S. Miller
git://git.open-mesh.org/linux-merge Simon Wunderlich says: ==================== This cleanup patchset includes the following patches: - bump version strings, by Simon Wunderlich - Cleanup patches to make checkpatch happy, by Sven Eckelmann (3 patches) ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-04net: Add extack to upper device linkingDavid Ahern
Add extack arg to netdev_upper_dev_link and netdev_master_upper_dev_link Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-04net: Add extack to ndo_add_slaveDavid Ahern
Pass extack to do_set_master and down to ndo_add_slave Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-30batman-adv: Add argument names for function ptr definitionsSven Eckelmann
checkpatch started to report unnamed arguments in function pointer definitions. Add the corresponding names to these definitions to avoid this warning. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-09-28batman-adv: Fix "line over 80 characters" checkpatch warningSven Eckelmann
Fixes: 242c1a28eb61 ("net: Remove useless function skb_header_release") Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-09-28batman-adv: Remove unnecessary parenthesesSven Eckelmann
checkpatch introduced with commit 63b7c73ec86b ("checkpatch: add --strict check for ifs with unnecessary parentheses") an additional test which identifies some unnecessary parentheses. Remove these unnecessary parentheses to avoid the warnings and to unify the coding style slightly more. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-09-28batman-adv: Start new development cycleSimon Wunderlich
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-09-22net: Remove useless function skb_header_releaseGao Feng
There is no one which would invokes the function skb_header_release. So just remove it now. Signed-off-by: Gao Feng <gfree.wind@vip.163.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
The UDP offload conflict is dealt with by simply taking what is in net-next where we have removed all of the UFO handling code entirely. The TCP conflict was a case of local variables in a function being removed from both net and net-next. In netvsc we had an assignment right next to where a missing set of u64 stats sync object inits were added. Signed-off-by: David S. Miller <davem@davemloft.net>
2017-07-31batman-adv: fix TT sync flag inconsistenciesLinus Lüssing
This patch fixes an issue in the translation table code potentially leading to a TT Request + Response storm. The issue may occur for nodes involving BLA and an inconsistent configuration of the batman-adv AP isolation feature. However, since the new multicast optimizations, a single, malformed packet may lead to a mesh-wide, persistent Denial-of-Service, too. The issue occurs because nodes are currently OR-ing the TT sync flags of all originators announcing a specific MAC address via the translation table. When an intermediate node now receives a TT Request and wants to answer this on behalf of the destination node, then this intermediate node now responds with an altered flag field and broken CRC. The next OGM of the real destination will lead to a CRC mismatch and triggering a TT Request and Response again. Furthermore, the OR-ing is currently never undone as long as at least one originator announcing the according MAC address remains, leading to the potential persistency of this issue. This patch fixes this issue by storing the flags used in the CRC calculation on a a per TT orig entry basis to be able to respond with the correct, original flags in an intermediate TT Response for one thing. And to be able to correctly unset sync flags once all nodes announcing a sync flag vanish for another. Fixes: e9c00136a475 ("batman-adv: fix tt_global_entries flags update") Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Acked-by: Antonio Quartulli <a@unstable.cc> [sw: typo in commit message] Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-07-29batman-adv: fix various spelling mistakesColin Ian King
Trivial fix to spelling mistakes in batadv_dbg debug messages and also in a comment and ensure comment line is not wider than 80 characters "ourselve" -> "ourselves" "surpressed" -> "suppressed" "troughput" -> "throughput" Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-07-29batman-adv: Remove variable deprecated by skb_put_dataSven Eckelmann
skb_put_data makes it unnecessary to store the skb_put return value to copy some data to the packet. The returned pointer of skb_put_data should therefore not stored by functions which previously only used it to copy some data. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-07-29batman-adv: Remove too short %pM printk field widthSven Eckelmann
The string representation for a mac address produced by %pM is 17 characters long. Left-aligning the output in a 15 character wide field width %-15pM is therefore misleading and unnecessary. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-07-29batman-adv: Remove unnecessary length qualifier in %14pMJoe Perches
It's misleading and unnecessary. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-07-29batman-adv: Start new development cycleSimon Wunderlich
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-06-16networking: make skb_put & friends return void pointersJohannes Berg
It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions (skb_put, __skb_put and pskb_put) return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: introduce and use skb_put_data()Johannes Berg
A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); | -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); | -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(*p)); | -memcpy(p, data, sizeof(*p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: convert many more places to skb_put_zero()Johannes Berg
There were many places that my previous spatch didn't find, as pointed out by yuan linyu in various patches. The following spatch found many more and also removes the now unnecessary casts: @@ identifier p, p2; expression len; expression skb; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_zero(skb, len); | -p = (t)skb_put(skb, len); +p = skb_put_zero(skb, len); ) ... when != p ( p2 = (t2)p; -memset(p2, 0, len); | -memset(p, 0, len); ) @@ type t, t2; identifier p, p2; expression skb; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_zero(skb, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_zero(skb, sizeof(t)); ) ... when != p ( p2 = (t2)p; -memset(p2, 0, sizeof(*p)); | -memset(p, 0, sizeof(*p)); ) @@ expression skb, len; @@ -memset(skb_put(skb, len), 0, len); +skb_put_zero(skb, len); Apply it to the tree (with one manual fixup to keep the comment in vxlan.c, which spatch removed.) Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
The conflicts were two cases of overlapping changes in batman-adv and the qed driver. Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-13Merge tag 'batadv-net-for-davem-20170613' of git://git.open-mesh.org/linux-mergeDavid S. Miller
Simon Wunderlich says: ==================== Here are two batman-adv bugfixes: - fix rx packet counters for local ARP replies, by Sven Eckelmann - fix memory leaks for unicast packetes received from another gateway in bridge loop avoidance, by Andreas Pape ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-13batman-adv: Accept only filled wifi station infoSven Eckelmann
The wifi driver can decide to not provide parts of the station info. For example, the expected throughput of the station can be omitted when the used rate control doesn't provide this kind of information. The B.A.T.M.A.N. V implementation must therefore check the filled bitfield before it tries to access the expected_throughput of the returned station_info. Reported-by: Alvaro Antelo <alvaro.antelo@gmail.com> Fixes: c833484e5f38 ("batman-adv: ELP - compute the metric based on the estimated throughput") Signed-off-by: Sven Eckelmann <sven@narfation.org> Reviewed-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-06-13batman-adv: Use default throughput value on cfg80211 errorSven Eckelmann
A wifi interface should never be handled like an ethernet devices. The parser of the cfg80211 output must therefore skip the ethtool code when cfg80211_get_station returned an error. Fixes: f44a3ae9a281 ("batman-adv: refactor wifi interface detection") Signed-off-by: Sven Eckelmann <sven@narfation.org> Reviewed-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-06-09batman-adv: simplify return handling in some TT functionsSimon Wunderlich
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2017-06-09batman-adv: do not add loop detection mac addresses to global ttSimon Wunderlich
This change has been made for local TT already, add another one for global TT - but only for temporary entries (aka speedy join), to prevent inconsistencies between local and global tables in case an older batman-adv version is still announcing those entries from its local table. Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Sven Eckelmann <sven@narfation.org>
2017-06-09batman-adv: tp_meter: mark init function with __initAntonio Quartulli
batadv_tp_meter_init() is invoked in batadv_init() only which is marked with __init. For this reason batadv_tp_meter_init() can be marked with __init as well and dropped after module load. Signed-off-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-06-07net: Fix inconsistent teardown and release of private netdev state.David S. Miller
Network devices can allocate reasources and private memory using netdev_ops->ndo_init(). However, the release of these resources can occur in one of two different places. Either netdev_ops->ndo_uninit() or netdev->destructor(). The decision of which operation frees the resources depends upon whether it is necessary for all netdev refs to be released before it is safe to perform the freeing. netdev_ops->ndo_uninit() presumably can occur right after the NETDEV_UNREGISTER notifier completes and the unicast and multicast address lists are flushed. netdev->destructor(), on the other hand, does not run until the netdev references all go away. Further complicating the situation is that netdev->destructor() almost universally does also a free_netdev(). This creates a problem for the logic in register_netdevice(). Because all callers of register_netdevice() manage the freeing of the netdev, and invoke free_netdev(dev) if register_netdevice() fails. If netdev_ops->ndo_init() succeeds, but something else fails inside of register_netdevice(), it does call ndo_ops->ndo_uninit(). But it is not able to invoke netdev->destructor(). This is because netdev->destructor() will do a free_netdev() and then the caller of register_netdevice() will do the same. However, this means that the resources that would normally be released by netdev->destructor() will not be. Over the years drivers have added local hacks to deal with this, by invoking their destructor parts by hand when register_netdevice() fails. Many drivers do not try to deal with this, and instead we have leaks. Let's close this hole by formalizing the distinction between what private things need to be freed up by netdev->destructor() and whether the driver needs unregister_netdevice() to perform the free_netdev(). netdev->priv_destructor() performs all actions to free up the private resources that used to be freed by netdev->destructor(), except for free_netdev(). netdev->needs_free_netdev is a boolean that indicates whether free_netdev() should be done at the end of unregister_netdevice(). Now, register_netdevice() can sanely release all resources after ndo_ops->ndo_init() succeeds, by invoking both ndo_ops->ndo_uninit() and netdev->priv_destructor(). And at the end of unregister_netdevice(), we invoke netdev->priv_destructor() and optionally call free_netdev(). Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-23batman-adv: Print correct function names in dbg messagesSven Eckelmann
The function names in batman-adv changed slightly in the past. But some of the debug messages were not updated correctly and therefore some messages were incorrect. To avoid this in the future, these kind of messages should use __func__ to automatically print the correct function name. Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-05-23batman-adv: Combine two seq_puts() calls into one call in ↵Markus Elfring
batadv_nc_nodes_seq_print_text() A bit of text was put into a sequence by two separate function calls. Print the same data by a single function call instead. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
2017-05-23batman-adv: Replace a seq_puts() call by seq_putc() in two functionsMarkus Elfring
Two single characters (line breaks) should be put into a sequence. Thus use the corresponding function "seq_putc". This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
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