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2017-11-21treewide: setup_timer() -> timer_setup()Kees Cook4-20/+19
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>
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman1-0/+1
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-29net: atl1c: fix spelling mistake: "droppted" -> "dropped"Colin Ian King1-1/+1
Trivial fix to spelling mistake in netif_info message Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-22net: atheros: atl2: don't return zero on failure path in atl2_probe()Alexey Khoroshilov1-4/+4
If dma mask checks fail in atl2_probe(), it breaks off initialization, deallocates all resources, but returns zero. The patch adds proper error code return value and make error code setup unified. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds1-2/+2
Pull networking fixes from David Miller: 1) Fix multiqueue in stmmac driver on PCI, from Andy Shevchenko. 2) cdc_ncm doesn't actually fully zero out the padding area is allocates on TX, from Jim Baxter. 3) Don't leak map addresses in BPF verifier, from Daniel Borkmann. 4) If we randomize TCP timestamps, we have to do it everywhere including SYN cookies. From Eric Dumazet. 5) Fix "ethtool -S" crash in aquantia driver, from Pavel Belous. 6) Fix allocation size for ntp filter bitmap in bnxt_en driver, from Dan Carpenter. 7) Add missing memory allocation return value check to DSA loop driver, from Christophe Jaillet. 8) Fix XDP leak on driver unload in qed driver, from Suddarsana Reddy Kalluru. 9) Don't inherit MC list from parent inet connection sockets, another syzkaller spotted gem. Fix from Eric Dumazet. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits) dccp/tcp: do not inherit mc_list from parent qede: Split PF/VF ndos. qed: Correct doorbell configuration for !4Kb pages qed: Tell QM the number of tasks qed: Fix VF removal sequence qede: Fix XDP memory leak on unload net/mlx4_core: Reduce harmless SRIOV error message to debug level net/mlx4_en: Avoid adding steering rules with invalid ring net/mlx4_en: Change the error print to debug print drivers: net: wimax: i2400m: i2400m-usb: Use time_after for time comparison DECnet: Use container_of() for embedded struct Revert "ipv4: restore rt->fi for reference counting" net: mdio-mux: bcm-iproc: call mdiobus_free() in error path net: ethernet: ti: cpsw: adjust cpsw fifos depth for fullduplex flow control ipv6: reorder ip6_route_dev_notifier after ipv6_dev_notf net: cdc_ncm: Fix TX zero padding stmmac: pci: split out common_default_data() helper stmmac: pci: RX queue routing configuration stmmac: pci: TX and RX queue priority configuration stmmac: pci: set default number of rx and tx queues ...
2017-05-08scripts/spelling.txt: add regsiter -> register spelling mistakeStephen Boyd1-1/+1
This typo is quite common. Fix it and add it to the spelling file so that checkpatch catches it earlier. Link: http://lkml.kernel.org/r/20170317011131.6881-2-sboyd@codeaurora.org Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-05-05net: alx: handle pci_alloc_irq_vectors return correctlyRakesh Pandit1-2/+2
It was introduced while switching to pci_alloc_irq_vectors recently and fixes: [ 60.527052] alx 0000:03:00.0 enp3s0: Enabling MSI-X interrupts failed! [ 60.529323] BUG: unable to handle kernel NULL pointer dereference at 00000000000000b8 [ 60.531589] IP: alx_alloc_napis+0xe6/0x1e0 [alx] [ 60.533831] PGD 0 [ 60.533833] P4D 0 [ 60.540559] Oops: 0002 [#1] SMP [ 60.542759] Modules linked in: ebtables ip6table_filter ip6_tables..... [ 60.549990] drm_kms_helper drm crc32c_intel alx serio_raw mdio wmi video i2c_hid uas usb_storage [ 60.551404] CPU: 0 PID: 999 Comm: NetworkManager Not tainted 4.11.0+ #1 [ 60.552813] Hardware name: Acer Predator G9-591/Mustang_SLS, BIOS V1.10 03/03/2016 [ 60.554219] task: ffff8804ae833c00 task.stack: ffffc90003eec000 [ 60.555383] RIP: 0010:alx_alloc_napis+0xe6/0x1e0 [alx] [ 60.556615] RSP: 0018:ffffc90003eef660 EFLAGS: 00010286 [ 60.557787] RAX: ffff8804962835a0 RBX: ffff8804aee8a8c0 RCX: 0000000000000000 [ 60.558987] RDX: 0000000000000060 RSI: 0000000000000000 RDI: ffff880496283600 [ 60.559979] RBP: ffffc90003eef688 R08: ffff8804c1c1e7e0 R09: ffff8804962835a0 [ 60.560978] R10: ffff8804962835a0 R11: 0000000000000102 R12: 0000000000000000 [ 60.561974] R13: 0000000000000000 R14: ffff8804aee8aaf0 R15: ffffffffa0052ea0 [ 60.562974] FS: 00007f1cecbc9940(0000) GS:ffff8804c1c00000(0000) knlGS:0000000000000000 [ 60.564003] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.564884] CR2: 00000000000000b8 CR3: 0000000496025000 CR4: 00000000003406f0 [ 60.565782] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.566676] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.567560] Call Trace: [ 60.568500] __alx_open+0xa2/0x570 [alx] [ 60.569355] ? notifier_call_chain+0x4a/0x70 [ 60.570144] alx_open+0x17/0x20 [alx] [ 60.570909] __dev_open+0xc6/0x140 [ 60.571682] ? _raw_spin_unlock_bh+0x1a/0x20 [ 60.572469] __dev_change_flags+0x9d/0x160 [ 60.573252] dev_change_flags+0x29/0x60 [ 60.574070] do_setlink+0x32e/0xc90 [ 60.574815] ? ttwu_do_activate+0x77/0x80 [ 60.575544] ? drm_fb_helper_dirty.isra.17+0xc7/0xe0 [drm_kms_helper] [ 60.576273] ? drm_fb_helper_cfb_imageblit+0x30/0x40 [drm_kms_helper] [ 60.577004] ? bit_putcs+0x2f7/0x560 [ 60.577729] ? nla_parse+0x35/0x140 [ 60.578518] rtnl_newlink+0x7d3/0x900 [ 60.579280] ? security_capset+0x30/0x80 [ 60.580029] ? ns_capable_common+0x68/0x80 [ 60.580747] ? ns_capable+0x13/0x20 [ 60.581453] rtnetlink_rcv_msg+0xee/0x220 [ 60.582198] ? rtnl_newlink+0x900/0x900 [ 60.582909] netlink_rcv_skb+0xe7/0x120 [ 60.583601] rtnetlink_rcv+0x28/0x30 [ 60.584303] netlink_unicast+0x18c/0x220 [ 60.585002] netlink_sendmsg+0x2ba/0x3b0 [ 60.585703] sock_sendmsg+0x38/0x50 [ 60.586436] ___sys_sendmsg+0x2b6/0x2d0 [ 60.587123] ? lockref_put_or_lock+0x5e/0x80 [ 60.587822] ? dput+0x155/0x1d0 [ 60.588518] ? mntput+0x24/0x40 [ 60.589215] __sys_sendmsg+0x54/0x90 [ 60.589907] ? __sys_sendmsg+0x54/0x90 [ 60.590627] SyS_sendmsg+0x12/0x20 [ 60.591333] entry_SYSCALL_64_fastpath+0x1a/0xa5 [ 60.592021] RIP: 0033:0x7f1ceb44e3b0 [ 60.592697] RSP: 002b:00007fffd7f0a2d0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e [ 60.593385] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f1ceb44e3b0 [ 60.594107] RDX: 0000000000000000 RSI: 00007fffd7f0a380 RDI: 000000000000000c [ 60.594798] RBP: 00007fffd7f0a800 R08: 0000000000000000 R09: 0000000000000000 [ 60.595502] R10: 0000564ffbae6e20 R11: 0000000000000293 R12: 0000000000000001 [ 60.596200] R13: 0000000000000002 R14: 0000000000000010 R15: 00007fffd7f0a4d0 [ 60.596899] Code: ed 85 c9 0f 8f ec 00 00 00 48 8b 3d 9d 97 1a e2 ba 50 00 00 00 be c0 80 40 01 4c 8b a3 30 02 00 00 e8 ff e5 1d e1 48 85 c0 74 a3 <49> 89 84 24 b8 00 00 00 48 8b 93 30 02 00 00 48 8b 4b 08 48 89 [ 60.597642] RIP: alx_alloc_napis+0xe6/0x1e0 [alx] RSP: ffffc90003eef660 [ 60.598427] CR2: 00000000000000b8 Fixes: f3297f68 ("net: alx: switch to pci_alloc_irq_vectors") Signed-off-by: Rakesh Pandit <rakesh@tuxera.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-24net: atheros: atl1: use offset_in_page() macroGeliang Tang1-6/+5
Use offset_in_page() macro instead of open-coding. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-11net: alx: switch to pci_alloc_irq_vectorsChristoph Hellwig2-80/+54
Remove the deprecated pci_enable_msix API in favour of its successor, and make sure to handle errors during IRQ setup properly. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-03atl1e: add GRO supportEric Dumazet1-1/+1
It is time to add GRO support to this driver. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30drivers: net: generalize napi_complete_done()Eric Dumazet4-4/+4
napi_complete_done() allows to opt-in for gro_flush_timeout, added back in linux-3.19, commit 3b47d30396ba ("net: gro: add a per device gro flush timer") This allows for more efficient GRO aggregation without sacrifying latencies. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-3/+8
Two trivial overlapping changes conflicts in MPLS and mlx5. Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24alx: work around hardware bug in interrupt fallback pathTobias Regnery1-2/+6
If requesting msi-x interrupts fails in alx_request_irq we fall back to a single tx queue and msi or legacy interrupts. Currently the adapter stops working in this case and we get tx watchdog timeouts. For reasons unknown the adapter gets confused when we load the dma adresses to the chip in alx_init_ring_ptrs twice: the first time with multiple queues and the second time in the fallback case with a single queue. To fix this move the the call to alx_reinit_rings (which calls alx_init_ring_ptrs) after alx_request_irq. At this time it is clear how much tx queues we have and which dma addresses we use. Fixes: d768319cd427 ("alx: enable multiple tx queues") Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24alx: fix fallback to msi or legacy interruptsTobias Regnery1-0/+1
If requesting msi-x interrupts fails we should fall back to msi or legacy interrupts. However alx_realloc_ressources don't call alx_init_intr, so we fail to set the right number of tx queues. This results in watchdog timeouts and a nonfunctional adapter. Fixes: d768319cd427 ("alx: enable multiple tx queues") Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24alx: fix wrong condition to free descriptor memoryTobias Regnery1-1/+1
The condition to free the descriptor memory is wrong, we want to free the memory if it is set and not if it is unset. Invert the test to fix this issue. Fixes: b0999223f224b ("alx: add ability to allocate and free alx_napi structures") Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-09alx: add feature flag for rx checksummingTobias Regnery1-0/+1
The code to handle rx checksumming was in the driver since its introduction but for reasons unknown the feature flag was left out. Now it is possible to enable this feature with ethtool. Tested on my AR8161 ethernet card, there are no regressions observed in netperf if this feature is enabled. Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-08net: make ndo_get_stats64 a void functionstephen hemminger1-4/+2
The network device operation for reading statistics is only called in one place, and it ignores the return value. Having a structure return value is potentially confusing because some future driver could incorrectly assume that the return value was used. Fix all drivers with ndo_get_stats64 to have a void function. Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-16Makefile: drop -D__CHECK_ENDIAN__ from cflagsMichael S. Tsirkin1-1/+0
That's the default now, no need for makefiles to set it. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Kalle Valo <kvalo@codeaurora.org> Acked-by: Marcel Holtmann <marcel@holtmann.org> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
2016-11-15alx: enable multiple tx queuesTobias Regnery1-2/+6
Enable multiple tx queues by default based on the number of online cpus. The hardware supports up to four tx queues. Based on the downstream driver at github.com/qca/alx Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-15alx: enable msi-x interrupts by defaultTobias Regnery1-5/+1
Remove the module parameter to enable msi-x support and enable msi-x interrupts unconditionally by default. This is a preparatory step to enable multi queue support by default, because this is only working with msi-x interrupts. Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-15alx: prepare tx path for multi queue supportTobias Regnery1-13/+45
This patch prepares the tx path to send data on multiple tx queues. It introduces per queue register adresses and uses them in the alx_tx_queue structs. There are new helper functions for the queue mapping in the tx path. Based on the downstream driver at github.com/qca/alx Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-15alx: prepare resource allocation for multi queue supportTobias Regnery1-52/+97
Allocate, initialise and free alx_tx_queue structs based on the number of alx_napi structures. Also increase the size of the descriptor memory based on the number of tx queues in use. Based on the downstream driver at github.com/qca/alx Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-15alx: prepare interrupt functions for multiple queuesTobias Regnery1-27/+105
Extend the interrupt bringup code and the interrupt handler for msi-x interrupts in order to handle multiple queues. We must change the poll function because with multiple queues it is possible that an alx_napi structure has only a tx or only a rx queue pointer. Based on the downstream driver at github.com/qca/alx Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-15alx: switch to per queue data structuresTobias Regnery2-95/+93
Remove the tx and rx queue structures from the alx_priv structure and switch everything over to the queue pointers in the alx_napi structure. Based on the downstream driver at github.com/qca/alx Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-15alx: add ability to allocate and free alx_napi structuresTobias Regnery1-21/+78
Add new functions to allocate and free the alx_napi structures and use them in __alx_open and __alx_stop. We only allocate one of these structures for now, as the rest of the driver is not yet ready for multiple queues. We switch over the setup of the interrupt mask and the call to netif_napi_add to the new function because we must adjust these later on a per queue basis. Based on the downstream driver at github.com/qca/alx Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-15alx: extend data structures for multi queue supportTobias Regnery1-0/+31
Extend the driver data structures to be able to handle multiple queues. Based on the downstream driver at github.com/qca/alx Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-15alx: refactor descriptor allocationTobias Regnery1-44/+53
Split the allocation of descriptor memory and the buffer allocation into a tx and rx function. This is in preparation for multiple queues where we need to iterate over the new functions. While at it drop the unneeded casting on the rx side. Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-14net: atheros: atl2: use new api ethtool_{get|set}_link_ksettingsPhilippe Reynes1-30/+36
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. The previous implementation of set_settings was modifying the value of advertising, but with the new API, it's not possible. The structure ethtool_link_ksettings is defined as const. Signed-off-by: Philippe Reynes <tremyfr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-14net: atheros: atl1: use new api ethtool_{get|set}_link_ksettingsPhilippe Reynes1-30/+36
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. The previous implementation of set_settings was modifying the value of advertising, but with the new API, it's not possible. The structure ethtool_link_ksettings is defined as const. Signed-off-by: Philippe Reynes <tremyfr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-14net: atheros: atl1c: use new api ethtool_{get|set}_link_ksettingsPhilippe Reynes1-24/+30
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. Signed-off-by: Philippe Reynes <tremyfr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-14net: alx: use new api ethtool_{get|set}_link_ksettingsPhilippe Reynes1-24/+35
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. Signed-off-by: Philippe Reynes <tremyfr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-13net: atheros: atl1e: use new api ethtool_{get|set}_link_ksettingsPhilippe Reynes1-26/+36
The ethtool api {get|set}_settings is deprecated. We move this driver to new api {get|set}_link_ksettings. The previous implementation of set_settings was modifying the value of advertising, but with the new API, it's not possible. The structure ethtool_link_ksettings is defined as const. Signed-off-by: Philippe Reynes <tremyfr@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-18ethernet/atheros: use core min/max MTU checkingJarod Wilson7-51/+47
atl2: min_mtu 40, max_mtu 1504 - Remove a few redundant defines that already have equivalents in if_ether.h. atl1: min_mtu 42, max_mtu 10218 atl1e: min_mtu 42, max_mtu 8170 atl1c: min_mtu 42, max_mtu 6122/1500 - GbE hardware gets a max_mtu of 6122, slower hardware gets 1500. alx: min_mtu 34, max_mtu 9256 - Not so sure that minimum MTU number is really what was intended, but that's what the math actually makes it out to be, due to max_frame manipulations and comparison in alx_change_mtu, rather than just comparing new_mtu. (I think 68 was the intended min_mtu value). CC: netdev@vger.kernel.org CC: Jay Cliburn <jcliburn@gmail.com> CC: Chris Snook <chris.snook@gmail.com> Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-15alx: fix error handling in __alx_openTobias Regnery1-1/+3
In commit 9ee7b683ea63 we moved the enablement of msi interrupts earlier in alx_init_intr. If there is an error in alx_alloc_rings, __alx_open returns with an error but msi (or msi-x) interrupts stays enabled. Add a new error label to disable msi (or msi-x) interrupts. Fixes: 9ee7b683ea63 ("alx: refactor msi enablement and disablement") Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-09alx: add module parameter to enable msi-x supportTobias Regnery1-1/+4
msi-x support is default disabled in the alx driver. In order to test msi-x interrupts for regressions add a module parameter to the driver. Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-09alx: add msi-x supportTobias Regnery4-8/+184
Add msi-x support to the alx driver. This is in preparation for multi queue support. msi-x interrupts are disabled by default because without multi queue support there is no advantage over msi interrupts. The performance numbers observed with iperf stay the same. Based on information of the downstream driver at github.com/qca/alx Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-09alx: factor out part of the interrupt handlerTobias Regnery1-14/+20
Factor out the handling of misc interrupts into a new function. This function can be reused later for msi-x interrupts. Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-09alx: refactor msi enablement and disablementTobias Regnery2-9/+26
Introduce a new flag field for the advanced interrupt capatibilities and add new functions to enable and disable msi interrupts. These functions will be extended later to cover msi-x interrupts. We enable msi interrupts earlier in alx_init_intr because with msi-x and multi queue support the number of queues must be set before we allocate resources for the rx and tx paths. Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-30Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2-0/+3
All three conflicts were cases of simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-29Add Killer E2500 device ID in alx driver.Owen Lin2-0/+3
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-26alx: add tso supportTobias Regnery1-4/+71
Add tso/tso6 support to the alx driver. Based on information from the downstream driver at github.com/qca/alx Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-01Merge branch 'pci/msi-affinity' into nextBjorn Helgaas2-51/+14
Conflicts: drivers/nvme/host/pci.c
2016-06-23alx: Use pci_(request|release)_mem_regionsJohannes Thumshirn1-7/+5
Now that we do have pci_request_mem_regions() and pci_release_mem_regions() at hand, use it in the ethernet drivers. Suggested-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Christoph Hellwig <hch@lst.de> CC: Jay Cliburn <jcliburn@gmail.com> CC: Chris Snook <chris.snook@gmail.com> CC: David S. Miller <davem@davemloft.net>
2016-06-14net: alx: Work around the DMA RX overflow issueFeng Tang2-51/+14
Commit 26c5f03 uses a new skb allocator to avoid the RFD overflow issue. But from debugging without datasheet, we found the error always happen when the DMA RX address is set to 0x....fc0, which is very likely to be a HW/silicon problem. So one idea is instead of adding a new allocator, why not just hitting the right target by avaiding the error-prone DMA address? This patch will actually * Remove the commit 26c5f03 * Apply rx skb with 64 bytes longer space, and if the allocated skb has a 0x...fc0 address, it will use skb_resever(skb, 64) to advance the address, so that the RX overflow can be avoided. In theory this method should also apply to atl1c driver, which I can't find anyone who can help to test on real devices. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=70761 Signed-off-by: Feng Tang <feng.tang@intel.com> Suggested-by: Eric Dumazet <edumazet@google.com> Tested-by: Ole Lukoie <olelukoie@mail.ru> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-25net: alx: use custom skb allocatorFeng Tang2-1/+51
This patch follows Eric Dumazet's commit 7b70176421 for Atheros atl1c driver to fix one exactly same bug in alx driver, that the network link will be lost in 1-5 minutes after the device is up. My laptop Lenovo Y580 with Atheros AR8161 ethernet device hit the same problem with kernel 4.4, and it will be cured by Jarod Wilson's commit c406700c for alx driver which get merged in 4.5. But there are still some alx devices can't function well even with Jarod's patch, while this patch could make them work fine. More details on https://bugzilla.kernel.org/show_bug.cgi?id=70761 The debug shows the issue is very likely to be related with the RX DMA address, specifically 0x...f80, if RX buffer get 0x...f80 several times, their will be RX overflow error and device will stop working. For kernel 4.5.0 with Jarod's patch which works fine with my AR8161/Lennov Y580, if I made some change to the __netdev_alloc_skb --> __alloc_page_frag() to make the allocated buffer can get an address with 0x...f80, then the same error happens. If I make it to 0x...f40 or 0x....fc0, everything will be still fine. So I tend to believe that the 0x..f80 address cause the silicon to behave abnormally. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=70761 Cc: Eric Dumazet <edumazet@google.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Jarod Wilson <jarod@redhat.com> Signed-off-by: Feng Tang <feng.tang@intel.com> Tested-by: Ole Lukoie <olelukoie@mail.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-05-04treewide: replace dev->trans_start update with helperFlorian Westphal1-1/+1
Replace all trans_start updates with netif_trans_update helper. change was done via spatch: struct net_device *d; @@ - d->trans_start = jiffies + netif_trans_update(d) Compile tested only. Cc: user-mode-linux-devel@lists.sourceforge.net Cc: linux-xtensa@linux-xtensa.org Cc: linux1394-devel@lists.sourceforge.net Cc: linux-rdma@vger.kernel.org Cc: netdev@vger.kernel.org Cc: MPT-FusionLinux.pdl@broadcom.com Cc: linux-scsi@vger.kernel.org Cc: linux-can@vger.kernel.org Cc: linux-parisc@vger.kernel.org Cc: linux-omap@vger.kernel.org Cc: linux-hams@vger.kernel.org Cc: linux-usb@vger.kernel.org Cc: linux-wireless@vger.kernel.org Cc: linux-s390@vger.kernel.org Cc: devel@driverdev.osuosl.org Cc: b.a.t.m.a.n@lists.open-mesh.org Cc: linux-bluetooth@vger.kernel.org Signed-off-by: Florian Westphal <fw@strlen.de> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> Acked-by: Mugunthan V N <mugunthanvnm@ti.com> Acked-by: Antonio Quartulli <a@unstable.cc> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-26atle1: remove LLTX support and TX_UNLOCKEDFlorian Westphal2-12/+1
similar to atl1c: lock is only used in ndo_start_xmit, but we also advertised LLTX, so remove that as well and let core stack handle tx locking. Allows to remove the TX_LOCKED return value from the driver. Cc: Jay Cliburn <jcliburn@gmail.com> Cc: Chris Snook <chris.snook@gmail.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-26atl1c: remove private tx lockFlorian Westphal2-13/+1
AFAICS this is safe: the lock is only used in the .ndo_start_xmit function and this driver does not set LLTX. Gets rid of TX_LOCKED return value, followup patches will remove it. Cc: Jay Cliburn <jcliburn@gmail.com> Cc: Chris Snook <chris.snook@gmail.com> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21atl2: Disable unimplemented scatter/gather featureBen Hutchings1-1/+1
atl2 includes NETIF_F_SG in hw_features even though it has no support for non-linear skbs. This bug was originally harmless since the driver does not claim to implement checksum offload and that used to be a requirement for SG. Now that SG and checksum offload are independent features, if you explicitly enable SG *and* use one of the rare protocols that can use SG without checkusm offload, this potentially leaks sensitive information (before you notice that it just isn't working). Therefore this obscure bug has been designated CVE-2016-2117. Reported-by: Justin Yackoski <jyackoski@crypto-nite.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Fixes: ec5f06156423 ("net: Kill link between CSUM and SG features.") Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-02ethernet/atl1c: remove left over dead codeEric Engestrom1-4/+0
Left over from c24588afc536a35c924d014f13b669b20ccf8553 ("atl1c: using fixed TXQ configuration for l2cb and l1c") Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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