linux/net/ncsi/ncsi-manage.c

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/*
* Copyright Gavin Shan, IBM Corporation 2016.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <net/ncsi.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/addrconf.h>
#include <net/ipv6.h>
#include <net/if_inet6.h>
#include "internal.h"
#include "ncsi-pkt.h"
#include "ncsi-netlink.h"
LIST_HEAD(ncsi_dev_list);
DEFINE_SPINLOCK(ncsi_dev_lock);
static void ncsi_report_link(struct ncsi_dev_priv *ndp, bool force_down)
{
struct ncsi_dev *nd = &ndp->ndev;
struct ncsi_package *np;
struct ncsi_channel *nc;
unsigned long flags;
nd->state = ncsi_dev_state_functional;
if (force_down) {
nd->link_up = 0;
goto report;
}
nd->link_up = 0;
NCSI_FOR_EACH_PACKAGE(ndp, np) {
NCSI_FOR_EACH_CHANNEL(np, nc) {
spin_lock_irqsave(&nc->lock, flags);
if (!list_empty(&nc->link) ||
nc->state != NCSI_CHANNEL_ACTIVE) {
spin_unlock_irqrestore(&nc->lock, flags);
continue;
}
if (nc->modes[NCSI_MODE_LINK].data[2] & 0x1) {
spin_unlock_irqrestore(&nc->lock, flags);
nd->link_up = 1;
goto report;
}
spin_unlock_irqrestore(&nc->lock, flags);
}
}
report:
nd->handler(nd);
}
treewide: setup_timer() -> timer_setup() (2 field) This converts all remaining setup_timer() calls that use a nested field to reach a struct timer_list. Coccinelle does not have an easy way to match multiple fields, so a new script is needed to change the matches of "&_E->_timer" into "&_E->_field1._timer" in all the rules. 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-2fields.cocci @fix_address_of depends@ 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 _field1; identifier _timer; type _cast_data; @@ ( -setup_timer(&_E->_field1._timer, NULL, _E); +timer_setup(&_E->_field1._timer, NULL, 0); | -setup_timer(&_E->_field1._timer, NULL, (_cast_data)_E); +timer_setup(&_E->_field1._timer, NULL, 0); | -setup_timer(&_E._field1._timer, NULL, &_E); +timer_setup(&_E._field1._timer, NULL, 0); | -setup_timer(&_E._field1._timer, NULL, (_cast_data)&_E); +timer_setup(&_E._field1._timer, NULL, 0); ) @change_timer_function_usage@ expression _E; identifier _field1; identifier _timer; struct timer_list _stl; identifier _callback; type _cast_func, _cast_data; @@ ( -setup_timer(&_E->_field1._timer, _callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, &_callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, _callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, &_callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)_callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)&_callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, &_callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, &_callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)_callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)&_callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | _E->_field1._timer@_stl.function = _callback; | _E->_field1._timer@_stl.function = &_callback; | _E->_field1._timer@_stl.function = (_cast_func)_callback; | _E->_field1._timer@_stl.function = (_cast_func)&_callback; | _E._field1._timer@_stl.function = _callback; | _E._field1._timer@_stl.function = &_callback; | _E._field1._timer@_stl.function = (_cast_func)_callback; | _E._field1._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._field1; 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, _field1._timer); ... when != _origarg | ... when != _origarg _handletype *_handle = -(void *)_origarg; +from_timer(_handle, t, _field1._timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(_handletype *)_origarg; +from_timer(_handle, t, _field1._timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(void *)_origarg; +from_timer(_handle, t, _field1._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._field1; 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, _field1._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._field1; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; @@ void _callback( -_handletype *_handle +struct timer_list *t ) { + _handletype *_handle = from_timer(_handle, t, _field1._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._field1; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; identifier t; @@ void _callback(struct timer_list *t) { - _handletype *_handle = from_timer(_handle, t, _field1._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._field1; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type change_timer_function_usage._cast_data; @@ ( -timer_setup(&_E->_field1._timer, _callback, 0); +setup_timer(&_E->_field1._timer, _callback, (_cast_data)_E); | -timer_setup(&_E._field1._timer, _callback, 0); +setup_timer(&_E._field1._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._field1; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_func; typedef TIMER_FUNC_TYPE; @@ ( _E->_field1._timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_field1._timer.function = -&_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_field1._timer.function = -(_cast_func)_callback; +(TIMER_FUNC_TYPE)_callback ; | _E->_field1._timer.function = -(_cast_func)&_callback +(TIMER_FUNC_TYPE)_callback ; | _E._field1._timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E._field1._timer.function = -&_callback; +(TIMER_FUNC_TYPE)_callback ; | _E._field1._timer.function = -(_cast_func)_callback +(TIMER_FUNC_TYPE)_callback ; | _E._field1._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._field1; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_data; @@ _callback( ( -(_cast_data)_E +&_E->_field1._timer | -(_cast_data)&_E +&_E._field1._timer | -_E +&_E->_field1._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 _field1; identifier _timer; identifier _callback; @@ ( -setup_timer(&_E->_field1._timer, _callback, 0); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, _callback, 0L); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, _callback, 0UL); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, 0); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, 0L); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, 0UL); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_field1._timer, _callback, 0); +timer_setup(&_field1._timer, _callback, 0); | -setup_timer(&_field1._timer, _callback, 0L); +timer_setup(&_field1._timer, _callback, 0); | -setup_timer(&_field1._timer, _callback, 0UL); +timer_setup(&_field1._timer, _callback, 0); | -setup_timer(_field1._timer, _callback, 0); +timer_setup(_field1._timer, _callback, 0); | -setup_timer(_field1._timer, _callback, 0L); +timer_setup(_field1._timer, _callback, 0); | -setup_timer(_field1._timer, _callback, 0UL); +timer_setup(_field1._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>
2017-10-18 03:21:24 +00:00
static void ncsi_channel_monitor(struct timer_list *t)
{
treewide: setup_timer() -> timer_setup() (2 field) This converts all remaining setup_timer() calls that use a nested field to reach a struct timer_list. Coccinelle does not have an easy way to match multiple fields, so a new script is needed to change the matches of "&_E->_timer" into "&_E->_field1._timer" in all the rules. 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-2fields.cocci @fix_address_of depends@ 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 _field1; identifier _timer; type _cast_data; @@ ( -setup_timer(&_E->_field1._timer, NULL, _E); +timer_setup(&_E->_field1._timer, NULL, 0); | -setup_timer(&_E->_field1._timer, NULL, (_cast_data)_E); +timer_setup(&_E->_field1._timer, NULL, 0); | -setup_timer(&_E._field1._timer, NULL, &_E); +timer_setup(&_E._field1._timer, NULL, 0); | -setup_timer(&_E._field1._timer, NULL, (_cast_data)&_E); +timer_setup(&_E._field1._timer, NULL, 0); ) @change_timer_function_usage@ expression _E; identifier _field1; identifier _timer; struct timer_list _stl; identifier _callback; type _cast_func, _cast_data; @@ ( -setup_timer(&_E->_field1._timer, _callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, &_callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, _callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, &_callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)_callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)&_callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, &_callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, &_callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)_callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)&_callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | _E->_field1._timer@_stl.function = _callback; | _E->_field1._timer@_stl.function = &_callback; | _E->_field1._timer@_stl.function = (_cast_func)_callback; | _E->_field1._timer@_stl.function = (_cast_func)&_callback; | _E._field1._timer@_stl.function = _callback; | _E._field1._timer@_stl.function = &_callback; | _E._field1._timer@_stl.function = (_cast_func)_callback; | _E._field1._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._field1; 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, _field1._timer); ... when != _origarg | ... when != _origarg _handletype *_handle = -(void *)_origarg; +from_timer(_handle, t, _field1._timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(_handletype *)_origarg; +from_timer(_handle, t, _field1._timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(void *)_origarg; +from_timer(_handle, t, _field1._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._field1; 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, _field1._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._field1; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; @@ void _callback( -_handletype *_handle +struct timer_list *t ) { + _handletype *_handle = from_timer(_handle, t, _field1._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._field1; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; identifier t; @@ void _callback(struct timer_list *t) { - _handletype *_handle = from_timer(_handle, t, _field1._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._field1; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type change_timer_function_usage._cast_data; @@ ( -timer_setup(&_E->_field1._timer, _callback, 0); +setup_timer(&_E->_field1._timer, _callback, (_cast_data)_E); | -timer_setup(&_E._field1._timer, _callback, 0); +setup_timer(&_E._field1._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._field1; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_func; typedef TIMER_FUNC_TYPE; @@ ( _E->_field1._timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_field1._timer.function = -&_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_field1._timer.function = -(_cast_func)_callback; +(TIMER_FUNC_TYPE)_callback ; | _E->_field1._timer.function = -(_cast_func)&_callback +(TIMER_FUNC_TYPE)_callback ; | _E._field1._timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E._field1._timer.function = -&_callback; +(TIMER_FUNC_TYPE)_callback ; | _E._field1._timer.function = -(_cast_func)_callback +(TIMER_FUNC_TYPE)_callback ; | _E._field1._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._field1; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_data; @@ _callback( ( -(_cast_data)_E +&_E->_field1._timer | -(_cast_data)&_E +&_E._field1._timer | -_E +&_E->_field1._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 _field1; identifier _timer; identifier _callback; @@ ( -setup_timer(&_E->_field1._timer, _callback, 0); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, _callback, 0L); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, _callback, 0UL); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, 0); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, 0L); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, 0UL); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_field1._timer, _callback, 0); +timer_setup(&_field1._timer, _callback, 0); | -setup_timer(&_field1._timer, _callback, 0L); +timer_setup(&_field1._timer, _callback, 0); | -setup_timer(&_field1._timer, _callback, 0UL); +timer_setup(&_field1._timer, _callback, 0); | -setup_timer(_field1._timer, _callback, 0); +timer_setup(_field1._timer, _callback, 0); | -setup_timer(_field1._timer, _callback, 0L); +timer_setup(_field1._timer, _callback, 0); | -setup_timer(_field1._timer, _callback, 0UL); +timer_setup(_field1._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>
2017-10-18 03:21:24 +00:00
struct ncsi_channel *nc = from_timer(nc, t, monitor.timer);
struct ncsi_package *np = nc->package;
struct ncsi_dev_priv *ndp = np->ndp;
struct ncsi_channel_mode *ncm;
struct ncsi_cmd_arg nca;
bool enabled, chained;
unsigned int monitor_state;
unsigned long flags;
int state, ret;
spin_lock_irqsave(&nc->lock, flags);
state = nc->state;
chained = !list_empty(&nc->link);
enabled = nc->monitor.enabled;
monitor_state = nc->monitor.state;
spin_unlock_irqrestore(&nc->lock, flags);
net/ncsi: Stop monitor if channel times out or is inactive ncsi_channel_monitor() misses stopping the channel monitor in several places that it should, causing a WARN_ON_ONCE() to trigger when the monitor is re-started later, eg: [ 459.040000] WARNING: CPU: 0 PID: 1093 at net/ncsi/ncsi-manage.c:269 ncsi_start_channel_monitor+0x7c/0x90 [ 459.040000] CPU: 0 PID: 1093 Comm: kworker/0:3 Not tainted 4.10.17-gaca2fdd #140 [ 459.040000] Hardware name: ASpeed SoC [ 459.040000] Workqueue: events ncsi_dev_work [ 459.040000] [<80010094>] (unwind_backtrace) from [<8000d950>] (show_stack+0x20/0x24) [ 459.040000] [<8000d950>] (show_stack) from [<801dbf70>] (dump_stack+0x20/0x28) [ 459.040000] [<801dbf70>] (dump_stack) from [<80018d7c>] (__warn+0xe0/0x108) [ 459.040000] [<80018d7c>] (__warn) from [<80018e70>] (warn_slowpath_null+0x30/0x38) [ 459.040000] [<80018e70>] (warn_slowpath_null) from [<803f6a08>] (ncsi_start_channel_monitor+0x7c/0x90) [ 459.040000] [<803f6a08>] (ncsi_start_channel_monitor) from [<803f7664>] (ncsi_configure_channel+0xdc/0x5fc) [ 459.040000] [<803f7664>] (ncsi_configure_channel) from [<803f8160>] (ncsi_dev_work+0xac/0x474) [ 459.040000] [<803f8160>] (ncsi_dev_work) from [<8002d244>] (process_one_work+0x1e0/0x450) [ 459.040000] [<8002d244>] (process_one_work) from [<8002d510>] (worker_thread+0x5c/0x570) [ 459.040000] [<8002d510>] (worker_thread) from [<80033614>] (kthread+0x124/0x164) [ 459.040000] [<80033614>] (kthread) from [<8000a5e8>] (ret_from_fork+0x14/0x2c) This also updates the monitor instead of just returning if ncsi_xmit_cmd() fails to send the get-link-status command so that the monitor properly times out. Fixes: e6f44ed6d04d3 "net/ncsi: Package and channel management" Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-19 02:43:06 +00:00
if (!enabled || chained) {
ncsi_stop_channel_monitor(nc);
return;
net/ncsi: Stop monitor if channel times out or is inactive ncsi_channel_monitor() misses stopping the channel monitor in several places that it should, causing a WARN_ON_ONCE() to trigger when the monitor is re-started later, eg: [ 459.040000] WARNING: CPU: 0 PID: 1093 at net/ncsi/ncsi-manage.c:269 ncsi_start_channel_monitor+0x7c/0x90 [ 459.040000] CPU: 0 PID: 1093 Comm: kworker/0:3 Not tainted 4.10.17-gaca2fdd #140 [ 459.040000] Hardware name: ASpeed SoC [ 459.040000] Workqueue: events ncsi_dev_work [ 459.040000] [<80010094>] (unwind_backtrace) from [<8000d950>] (show_stack+0x20/0x24) [ 459.040000] [<8000d950>] (show_stack) from [<801dbf70>] (dump_stack+0x20/0x28) [ 459.040000] [<801dbf70>] (dump_stack) from [<80018d7c>] (__warn+0xe0/0x108) [ 459.040000] [<80018d7c>] (__warn) from [<80018e70>] (warn_slowpath_null+0x30/0x38) [ 459.040000] [<80018e70>] (warn_slowpath_null) from [<803f6a08>] (ncsi_start_channel_monitor+0x7c/0x90) [ 459.040000] [<803f6a08>] (ncsi_start_channel_monitor) from [<803f7664>] (ncsi_configure_channel+0xdc/0x5fc) [ 459.040000] [<803f7664>] (ncsi_configure_channel) from [<803f8160>] (ncsi_dev_work+0xac/0x474) [ 459.040000] [<803f8160>] (ncsi_dev_work) from [<8002d244>] (process_one_work+0x1e0/0x450) [ 459.040000] [<8002d244>] (process_one_work) from [<8002d510>] (worker_thread+0x5c/0x570) [ 459.040000] [<8002d510>] (worker_thread) from [<80033614>] (kthread+0x124/0x164) [ 459.040000] [<80033614>] (kthread) from [<8000a5e8>] (ret_from_fork+0x14/0x2c) This also updates the monitor instead of just returning if ncsi_xmit_cmd() fails to send the get-link-status command so that the monitor properly times out. Fixes: e6f44ed6d04d3 "net/ncsi: Package and channel management" Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-19 02:43:06 +00:00
}
if (state != NCSI_CHANNEL_INACTIVE &&
net/ncsi: Stop monitor if channel times out or is inactive ncsi_channel_monitor() misses stopping the channel monitor in several places that it should, causing a WARN_ON_ONCE() to trigger when the monitor is re-started later, eg: [ 459.040000] WARNING: CPU: 0 PID: 1093 at net/ncsi/ncsi-manage.c:269 ncsi_start_channel_monitor+0x7c/0x90 [ 459.040000] CPU: 0 PID: 1093 Comm: kworker/0:3 Not tainted 4.10.17-gaca2fdd #140 [ 459.040000] Hardware name: ASpeed SoC [ 459.040000] Workqueue: events ncsi_dev_work [ 459.040000] [<80010094>] (unwind_backtrace) from [<8000d950>] (show_stack+0x20/0x24) [ 459.040000] [<8000d950>] (show_stack) from [<801dbf70>] (dump_stack+0x20/0x28) [ 459.040000] [<801dbf70>] (dump_stack) from [<80018d7c>] (__warn+0xe0/0x108) [ 459.040000] [<80018d7c>] (__warn) from [<80018e70>] (warn_slowpath_null+0x30/0x38) [ 459.040000] [<80018e70>] (warn_slowpath_null) from [<803f6a08>] (ncsi_start_channel_monitor+0x7c/0x90) [ 459.040000] [<803f6a08>] (ncsi_start_channel_monitor) from [<803f7664>] (ncsi_configure_channel+0xdc/0x5fc) [ 459.040000] [<803f7664>] (ncsi_configure_channel) from [<803f8160>] (ncsi_dev_work+0xac/0x474) [ 459.040000] [<803f8160>] (ncsi_dev_work) from [<8002d244>] (process_one_work+0x1e0/0x450) [ 459.040000] [<8002d244>] (process_one_work) from [<8002d510>] (worker_thread+0x5c/0x570) [ 459.040000] [<8002d510>] (worker_thread) from [<80033614>] (kthread+0x124/0x164) [ 459.040000] [<80033614>] (kthread) from [<8000a5e8>] (ret_from_fork+0x14/0x2c) This also updates the monitor instead of just returning if ncsi_xmit_cmd() fails to send the get-link-status command so that the monitor properly times out. Fixes: e6f44ed6d04d3 "net/ncsi: Package and channel management" Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-19 02:43:06 +00:00
state != NCSI_CHANNEL_ACTIVE) {
ncsi_stop_channel_monitor(nc);
return;
net/ncsi: Stop monitor if channel times out or is inactive ncsi_channel_monitor() misses stopping the channel monitor in several places that it should, causing a WARN_ON_ONCE() to trigger when the monitor is re-started later, eg: [ 459.040000] WARNING: CPU: 0 PID: 1093 at net/ncsi/ncsi-manage.c:269 ncsi_start_channel_monitor+0x7c/0x90 [ 459.040000] CPU: 0 PID: 1093 Comm: kworker/0:3 Not tainted 4.10.17-gaca2fdd #140 [ 459.040000] Hardware name: ASpeed SoC [ 459.040000] Workqueue: events ncsi_dev_work [ 459.040000] [<80010094>] (unwind_backtrace) from [<8000d950>] (show_stack+0x20/0x24) [ 459.040000] [<8000d950>] (show_stack) from [<801dbf70>] (dump_stack+0x20/0x28) [ 459.040000] [<801dbf70>] (dump_stack) from [<80018d7c>] (__warn+0xe0/0x108) [ 459.040000] [<80018d7c>] (__warn) from [<80018e70>] (warn_slowpath_null+0x30/0x38) [ 459.040000] [<80018e70>] (warn_slowpath_null) from [<803f6a08>] (ncsi_start_channel_monitor+0x7c/0x90) [ 459.040000] [<803f6a08>] (ncsi_start_channel_monitor) from [<803f7664>] (ncsi_configure_channel+0xdc/0x5fc) [ 459.040000] [<803f7664>] (ncsi_configure_channel) from [<803f8160>] (ncsi_dev_work+0xac/0x474) [ 459.040000] [<803f8160>] (ncsi_dev_work) from [<8002d244>] (process_one_work+0x1e0/0x450) [ 459.040000] [<8002d244>] (process_one_work) from [<8002d510>] (worker_thread+0x5c/0x570) [ 459.040000] [<8002d510>] (worker_thread) from [<80033614>] (kthread+0x124/0x164) [ 459.040000] [<80033614>] (kthread) from [<8000a5e8>] (ret_from_fork+0x14/0x2c) This also updates the monitor instead of just returning if ncsi_xmit_cmd() fails to send the get-link-status command so that the monitor properly times out. Fixes: e6f44ed6d04d3 "net/ncsi: Package and channel management" Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-19 02:43:06 +00:00
}
switch (monitor_state) {
case NCSI_CHANNEL_MONITOR_START:
case NCSI_CHANNEL_MONITOR_RETRY:
nca.ndp = ndp;
nca.package = np->id;
nca.channel = nc->id;
nca.type = NCSI_PKT_CMD_GLS;
nca.req_flags = 0;
ret = ncsi_xmit_cmd(&nca);
net/ncsi: Stop monitor if channel times out or is inactive ncsi_channel_monitor() misses stopping the channel monitor in several places that it should, causing a WARN_ON_ONCE() to trigger when the monitor is re-started later, eg: [ 459.040000] WARNING: CPU: 0 PID: 1093 at net/ncsi/ncsi-manage.c:269 ncsi_start_channel_monitor+0x7c/0x90 [ 459.040000] CPU: 0 PID: 1093 Comm: kworker/0:3 Not tainted 4.10.17-gaca2fdd #140 [ 459.040000] Hardware name: ASpeed SoC [ 459.040000] Workqueue: events ncsi_dev_work [ 459.040000] [<80010094>] (unwind_backtrace) from [<8000d950>] (show_stack+0x20/0x24) [ 459.040000] [<8000d950>] (show_stack) from [<801dbf70>] (dump_stack+0x20/0x28) [ 459.040000] [<801dbf70>] (dump_stack) from [<80018d7c>] (__warn+0xe0/0x108) [ 459.040000] [<80018d7c>] (__warn) from [<80018e70>] (warn_slowpath_null+0x30/0x38) [ 459.040000] [<80018e70>] (warn_slowpath_null) from [<803f6a08>] (ncsi_start_channel_monitor+0x7c/0x90) [ 459.040000] [<803f6a08>] (ncsi_start_channel_monitor) from [<803f7664>] (ncsi_configure_channel+0xdc/0x5fc) [ 459.040000] [<803f7664>] (ncsi_configure_channel) from [<803f8160>] (ncsi_dev_work+0xac/0x474) [ 459.040000] [<803f8160>] (ncsi_dev_work) from [<8002d244>] (process_one_work+0x1e0/0x450) [ 459.040000] [<8002d244>] (process_one_work) from [<8002d510>] (worker_thread+0x5c/0x570) [ 459.040000] [<8002d510>] (worker_thread) from [<80033614>] (kthread+0x124/0x164) [ 459.040000] [<80033614>] (kthread) from [<8000a5e8>] (ret_from_fork+0x14/0x2c) This also updates the monitor instead of just returning if ncsi_xmit_cmd() fails to send the get-link-status command so that the monitor properly times out. Fixes: e6f44ed6d04d3 "net/ncsi: Package and channel management" Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-19 02:43:06 +00:00
if (ret)
netdev_err(ndp->ndev.dev, "Error %d sending GLS\n",
ret);
break;
case NCSI_CHANNEL_MONITOR_WAIT ... NCSI_CHANNEL_MONITOR_WAIT_MAX:
break;
default:
netdev_err(ndp->ndev.dev, "NCSI Channel %d timed out!\n",
nc->id);
if (!(ndp->flags & NCSI_DEV_HWA)) {
ncsi_report_link(ndp, true);
ndp->flags |= NCSI_DEV_RESHUFFLE;
}
net/ncsi: Stop monitor if channel times out or is inactive ncsi_channel_monitor() misses stopping the channel monitor in several places that it should, causing a WARN_ON_ONCE() to trigger when the monitor is re-started later, eg: [ 459.040000] WARNING: CPU: 0 PID: 1093 at net/ncsi/ncsi-manage.c:269 ncsi_start_channel_monitor+0x7c/0x90 [ 459.040000] CPU: 0 PID: 1093 Comm: kworker/0:3 Not tainted 4.10.17-gaca2fdd #140 [ 459.040000] Hardware name: ASpeed SoC [ 459.040000] Workqueue: events ncsi_dev_work [ 459.040000] [<80010094>] (unwind_backtrace) from [<8000d950>] (show_stack+0x20/0x24) [ 459.040000] [<8000d950>] (show_stack) from [<801dbf70>] (dump_stack+0x20/0x28) [ 459.040000] [<801dbf70>] (dump_stack) from [<80018d7c>] (__warn+0xe0/0x108) [ 459.040000] [<80018d7c>] (__warn) from [<80018e70>] (warn_slowpath_null+0x30/0x38) [ 459.040000] [<80018e70>] (warn_slowpath_null) from [<803f6a08>] (ncsi_start_channel_monitor+0x7c/0x90) [ 459.040000] [<803f6a08>] (ncsi_start_channel_monitor) from [<803f7664>] (ncsi_configure_channel+0xdc/0x5fc) [ 459.040000] [<803f7664>] (ncsi_configure_channel) from [<803f8160>] (ncsi_dev_work+0xac/0x474) [ 459.040000] [<803f8160>] (ncsi_dev_work) from [<8002d244>] (process_one_work+0x1e0/0x450) [ 459.040000] [<8002d244>] (process_one_work) from [<8002d510>] (worker_thread+0x5c/0x570) [ 459.040000] [<8002d510>] (worker_thread) from [<80033614>] (kthread+0x124/0x164) [ 459.040000] [<80033614>] (kthread) from [<8000a5e8>] (ret_from_fork+0x14/0x2c) This also updates the monitor instead of just returning if ncsi_xmit_cmd() fails to send the get-link-status command so that the monitor properly times out. Fixes: e6f44ed6d04d3 "net/ncsi: Package and channel management" Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-19 02:43:06 +00:00
ncsi_stop_channel_monitor(nc);
ncm = &nc->modes[NCSI_MODE_LINK];
spin_lock_irqsave(&nc->lock, flags);
nc->state = NCSI_CHANNEL_INVISIBLE;
ncm->data[2] &= ~0x1;
spin_unlock_irqrestore(&nc->lock, flags);
spin_lock_irqsave(&ndp->lock, flags);
nc->state = NCSI_CHANNEL_ACTIVE;
list_add_tail_rcu(&nc->link, &ndp->channel_queue);
spin_unlock_irqrestore(&ndp->lock, flags);
ncsi_process_next_channel(ndp);
return;
}
spin_lock_irqsave(&nc->lock, flags);
nc->monitor.state++;
spin_unlock_irqrestore(&nc->lock, flags);
mod_timer(&nc->monitor.timer, jiffies + HZ);
}
void ncsi_start_channel_monitor(struct ncsi_channel *nc)
{
unsigned long flags;
spin_lock_irqsave(&nc->lock, flags);
WARN_ON_ONCE(nc->monitor.enabled);
nc->monitor.enabled = true;
nc->monitor.state = NCSI_CHANNEL_MONITOR_START;
spin_unlock_irqrestore(&nc->lock, flags);
mod_timer(&nc->monitor.timer, jiffies + HZ);
}
void ncsi_stop_channel_monitor(struct ncsi_channel *nc)
{
unsigned long flags;
spin_lock_irqsave(&nc->lock, flags);
if (!nc->monitor.enabled) {
spin_unlock_irqrestore(&nc->lock, flags);
return;
}
nc->monitor.enabled = false;
spin_unlock_irqrestore(&nc->lock, flags);
del_timer_sync(&nc->monitor.timer);
}
struct ncsi_channel *ncsi_find_channel(struct ncsi_package *np,
unsigned char id)
{
struct ncsi_channel *nc;
NCSI_FOR_EACH_CHANNEL(np, nc) {
if (nc->id == id)
return nc;
}
return NULL;
}
struct ncsi_channel *ncsi_add_channel(struct ncsi_package *np, unsigned char id)
{
struct ncsi_channel *nc, *tmp;
int index;
unsigned long flags;
nc = kzalloc(sizeof(*nc), GFP_ATOMIC);
if (!nc)
return NULL;
nc->id = id;
nc->package = np;
nc->state = NCSI_CHANNEL_INACTIVE;
nc->monitor.enabled = false;
treewide: setup_timer() -> timer_setup() (2 field) This converts all remaining setup_timer() calls that use a nested field to reach a struct timer_list. Coccinelle does not have an easy way to match multiple fields, so a new script is needed to change the matches of "&_E->_timer" into "&_E->_field1._timer" in all the rules. 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-2fields.cocci @fix_address_of depends@ 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 _field1; identifier _timer; type _cast_data; @@ ( -setup_timer(&_E->_field1._timer, NULL, _E); +timer_setup(&_E->_field1._timer, NULL, 0); | -setup_timer(&_E->_field1._timer, NULL, (_cast_data)_E); +timer_setup(&_E->_field1._timer, NULL, 0); | -setup_timer(&_E._field1._timer, NULL, &_E); +timer_setup(&_E._field1._timer, NULL, 0); | -setup_timer(&_E._field1._timer, NULL, (_cast_data)&_E); +timer_setup(&_E._field1._timer, NULL, 0); ) @change_timer_function_usage@ expression _E; identifier _field1; identifier _timer; struct timer_list _stl; identifier _callback; type _cast_func, _cast_data; @@ ( -setup_timer(&_E->_field1._timer, _callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, &_callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, _callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, &_callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)_callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)&_callback, _E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, &_callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, &_callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)_callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)_callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)&_callback, (_cast_data)_E); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, (_cast_func)&_callback, (_cast_data)&_E); +timer_setup(&_E._field1._timer, _callback, 0); | _E->_field1._timer@_stl.function = _callback; | _E->_field1._timer@_stl.function = &_callback; | _E->_field1._timer@_stl.function = (_cast_func)_callback; | _E->_field1._timer@_stl.function = (_cast_func)&_callback; | _E._field1._timer@_stl.function = _callback; | _E._field1._timer@_stl.function = &_callback; | _E._field1._timer@_stl.function = (_cast_func)_callback; | _E._field1._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._field1; 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, _field1._timer); ... when != _origarg | ... when != _origarg _handletype *_handle = -(void *)_origarg; +from_timer(_handle, t, _field1._timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(_handletype *)_origarg; +from_timer(_handle, t, _field1._timer); ... when != _origarg | ... when != _origarg _handletype *_handle; ... when != _handle _handle = -(void *)_origarg; +from_timer(_handle, t, _field1._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._field1; 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, _field1._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._field1; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; @@ void _callback( -_handletype *_handle +struct timer_list *t ) { + _handletype *_handle = from_timer(_handle, t, _field1._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._field1; identifier change_timer_function_usage._timer; type _handletype; identifier _handle; identifier t; @@ void _callback(struct timer_list *t) { - _handletype *_handle = from_timer(_handle, t, _field1._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._field1; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type change_timer_function_usage._cast_data; @@ ( -timer_setup(&_E->_field1._timer, _callback, 0); +setup_timer(&_E->_field1._timer, _callback, (_cast_data)_E); | -timer_setup(&_E._field1._timer, _callback, 0); +setup_timer(&_E._field1._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._field1; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_func; typedef TIMER_FUNC_TYPE; @@ ( _E->_field1._timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_field1._timer.function = -&_callback +(TIMER_FUNC_TYPE)_callback ; | _E->_field1._timer.function = -(_cast_func)_callback; +(TIMER_FUNC_TYPE)_callback ; | _E->_field1._timer.function = -(_cast_func)&_callback +(TIMER_FUNC_TYPE)_callback ; | _E._field1._timer.function = -_callback +(TIMER_FUNC_TYPE)_callback ; | _E._field1._timer.function = -&_callback; +(TIMER_FUNC_TYPE)_callback ; | _E._field1._timer.function = -(_cast_func)_callback +(TIMER_FUNC_TYPE)_callback ; | _E._field1._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._field1; identifier change_timer_function_usage._timer; identifier change_timer_function_usage._callback; type _cast_data; @@ _callback( ( -(_cast_data)_E +&_E->_field1._timer | -(_cast_data)&_E +&_E._field1._timer | -_E +&_E->_field1._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 _field1; identifier _timer; identifier _callback; @@ ( -setup_timer(&_E->_field1._timer, _callback, 0); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, _callback, 0L); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E->_field1._timer, _callback, 0UL); +timer_setup(&_E->_field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, 0); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, 0L); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_E._field1._timer, _callback, 0UL); +timer_setup(&_E._field1._timer, _callback, 0); | -setup_timer(&_field1._timer, _callback, 0); +timer_setup(&_field1._timer, _callback, 0); | -setup_timer(&_field1._timer, _callback, 0L); +timer_setup(&_field1._timer, _callback, 0); | -setup_timer(&_field1._timer, _callback, 0UL); +timer_setup(&_field1._timer, _callback, 0); | -setup_timer(_field1._timer, _callback, 0); +timer_setup(_field1._timer, _callback, 0); | -setup_timer(_field1._timer, _callback, 0L); +timer_setup(_field1._timer, _callback, 0); | -setup_timer(_field1._timer, _callback, 0UL); +timer_setup(_field1._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>
2017-10-18 03:21:24 +00:00
timer_setup(&nc->monitor.timer, ncsi_channel_monitor, 0);
spin_lock_init(&nc->lock);
INIT_LIST_HEAD(&nc->link);
for (index = 0; index < NCSI_CAP_MAX; index++)
nc->caps[index].index = index;
for (index = 0; index < NCSI_MODE_MAX; index++)
nc->modes[index].index = index;
spin_lock_irqsave(&np->lock, flags);
tmp = ncsi_find_channel(np, id);
if (tmp) {
spin_unlock_irqrestore(&np->lock, flags);
kfree(nc);
return tmp;
}
list_add_tail_rcu(&nc->node, &np->channels);
np->channel_num++;
spin_unlock_irqrestore(&np->lock, flags);
return nc;
}
static void ncsi_remove_channel(struct ncsi_channel *nc)
{
struct ncsi_package *np = nc->package;
unsigned long flags;
spin_lock_irqsave(&nc->lock, flags);
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
/* Release filters */
kfree(nc->mac_filter.addrs);
kfree(nc->vlan_filter.vids);
nc->state = NCSI_CHANNEL_INACTIVE;
spin_unlock_irqrestore(&nc->lock, flags);
ncsi_stop_channel_monitor(nc);
/* Remove and free channel */
spin_lock_irqsave(&np->lock, flags);
list_del_rcu(&nc->node);
np->channel_num--;
spin_unlock_irqrestore(&np->lock, flags);
kfree(nc);
}
struct ncsi_package *ncsi_find_package(struct ncsi_dev_priv *ndp,
unsigned char id)
{
struct ncsi_package *np;
NCSI_FOR_EACH_PACKAGE(ndp, np) {
if (np->id == id)
return np;
}
return NULL;
}
struct ncsi_package *ncsi_add_package(struct ncsi_dev_priv *ndp,
unsigned char id)
{
struct ncsi_package *np, *tmp;
unsigned long flags;
np = kzalloc(sizeof(*np), GFP_ATOMIC);
if (!np)
return NULL;
np->id = id;
np->ndp = ndp;
spin_lock_init(&np->lock);
INIT_LIST_HEAD(&np->channels);
spin_lock_irqsave(&ndp->lock, flags);
tmp = ncsi_find_package(ndp, id);
if (tmp) {
spin_unlock_irqrestore(&ndp->lock, flags);
kfree(np);
return tmp;
}
list_add_tail_rcu(&np->node, &ndp->packages);
ndp->package_num++;
spin_unlock_irqrestore(&ndp->lock, flags);
return np;
}
void ncsi_remove_package(struct ncsi_package *np)
{
struct ncsi_dev_priv *ndp = np->ndp;
struct ncsi_channel *nc, *tmp;
unsigned long flags;
/* Release all child channels */
list_for_each_entry_safe(nc, tmp, &np->channels, node)
ncsi_remove_channel(nc);
/* Remove and free package */
spin_lock_irqsave(&ndp->lock, flags);
list_del_rcu(&np->node);
ndp->package_num--;
spin_unlock_irqrestore(&ndp->lock, flags);
kfree(np);
}
void ncsi_find_package_and_channel(struct ncsi_dev_priv *ndp,
unsigned char id,
struct ncsi_package **np,
struct ncsi_channel **nc)
{
struct ncsi_package *p;
struct ncsi_channel *c;
p = ncsi_find_package(ndp, NCSI_PACKAGE_INDEX(id));
c = p ? ncsi_find_channel(p, NCSI_CHANNEL_INDEX(id)) : NULL;
if (np)
*np = p;
if (nc)
*nc = c;
}
/* For two consecutive NCSI commands, the packet IDs shouldn't
* be same. Otherwise, the bogus response might be replied. So
* the available IDs are allocated in round-robin fashion.
*/
struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp,
unsigned int req_flags)
{
struct ncsi_request *nr = NULL;
int i, limit = ARRAY_SIZE(ndp->requests);
unsigned long flags;
/* Check if there is one available request until the ceiling */
spin_lock_irqsave(&ndp->lock, flags);
for (i = ndp->request_id; i < limit; i++) {
if (ndp->requests[i].used)
continue;
nr = &ndp->requests[i];
nr->used = true;
nr->flags = req_flags;
ndp->request_id = i + 1;
goto found;
}
/* Fail back to check from the starting cursor */
for (i = NCSI_REQ_START_IDX; i < ndp->request_id; i++) {
if (ndp->requests[i].used)
continue;
nr = &ndp->requests[i];
nr->used = true;
nr->flags = req_flags;
ndp->request_id = i + 1;
goto found;
}
found:
spin_unlock_irqrestore(&ndp->lock, flags);
return nr;
}
void ncsi_free_request(struct ncsi_request *nr)
{
struct ncsi_dev_priv *ndp = nr->ndp;
struct sk_buff *cmd, *rsp;
unsigned long flags;
bool driven;
if (nr->enabled) {
nr->enabled = false;
del_timer_sync(&nr->timer);
}
spin_lock_irqsave(&ndp->lock, flags);
cmd = nr->cmd;
rsp = nr->rsp;
nr->cmd = NULL;
nr->rsp = NULL;
nr->used = false;
driven = !!(nr->flags & NCSI_REQ_FLAG_EVENT_DRIVEN);
spin_unlock_irqrestore(&ndp->lock, flags);
if (driven && cmd && --ndp->pending_req_num == 0)
schedule_work(&ndp->work);
/* Release command and response */
consume_skb(cmd);
consume_skb(rsp);
}
struct ncsi_dev *ncsi_find_dev(struct net_device *dev)
{
struct ncsi_dev_priv *ndp;
NCSI_FOR_EACH_DEV(ndp) {
if (ndp->ndev.dev == dev)
return &ndp->ndev;
}
return NULL;
}
treewide: setup_timer() -> timer_setup() 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>
2017-10-16 21:43:17 +00:00
static void ncsi_request_timeout(struct timer_list *t)
{
treewide: setup_timer() -> timer_setup() 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>
2017-10-16 21:43:17 +00:00
struct ncsi_request *nr = from_timer(nr, t, timer);
struct ncsi_dev_priv *ndp = nr->ndp;
unsigned long flags;
/* If the request already had associated response,
* let the response handler to release it.
*/
spin_lock_irqsave(&ndp->lock, flags);
nr->enabled = false;
if (nr->rsp || !nr->cmd) {
spin_unlock_irqrestore(&ndp->lock, flags);
return;
}
spin_unlock_irqrestore(&ndp->lock, flags);
/* Release the request */
ncsi_free_request(nr);
}
static void ncsi_suspend_channel(struct ncsi_dev_priv *ndp)
{
struct ncsi_dev *nd = &ndp->ndev;
struct ncsi_package *np = ndp->active_package;
struct ncsi_channel *nc = ndp->active_channel;
struct ncsi_cmd_arg nca;
unsigned long flags;
int ret;
nca.ndp = ndp;
nca.req_flags = NCSI_REQ_FLAG_EVENT_DRIVEN;
switch (nd->state) {
case ncsi_dev_state_suspend:
nd->state = ncsi_dev_state_suspend_select;
/* Fall through */
case ncsi_dev_state_suspend_select:
ndp->pending_req_num = 1;
nca.type = NCSI_PKT_CMD_SP;
nca.package = np->id;
nca.channel = NCSI_RESERVED_CHANNEL;
if (ndp->flags & NCSI_DEV_HWA)
nca.bytes[0] = 0;
else
nca.bytes[0] = 1;
/* To retrieve the last link states of channels in current
* package when current active channel needs fail over to
* another one. It means we will possibly select another
* channel as next active one. The link states of channels
* are most important factor of the selection. So we need
* accurate link states. Unfortunately, the link states on
* inactive channels can't be updated with LSC AEN in time.
*/
if (ndp->flags & NCSI_DEV_RESHUFFLE)
nd->state = ncsi_dev_state_suspend_gls;
else
nd->state = ncsi_dev_state_suspend_dcnt;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
break;
case ncsi_dev_state_suspend_gls:
ndp->pending_req_num = np->channel_num;
nca.type = NCSI_PKT_CMD_GLS;
nca.package = np->id;
nd->state = ncsi_dev_state_suspend_dcnt;
NCSI_FOR_EACH_CHANNEL(np, nc) {
nca.channel = nc->id;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
}
break;
case ncsi_dev_state_suspend_dcnt:
ndp->pending_req_num = 1;
nca.type = NCSI_PKT_CMD_DCNT;
nca.package = np->id;
nca.channel = nc->id;
nd->state = ncsi_dev_state_suspend_dc;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
break;
case ncsi_dev_state_suspend_dc:
ndp->pending_req_num = 1;
nca.type = NCSI_PKT_CMD_DC;
nca.package = np->id;
nca.channel = nc->id;
nca.bytes[0] = 1;
nd->state = ncsi_dev_state_suspend_deselect;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
break;
case ncsi_dev_state_suspend_deselect:
ndp->pending_req_num = 1;
nca.type = NCSI_PKT_CMD_DP;
nca.package = np->id;
nca.channel = NCSI_RESERVED_CHANNEL;
nd->state = ncsi_dev_state_suspend_done;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
break;
case ncsi_dev_state_suspend_done:
spin_lock_irqsave(&nc->lock, flags);
nc->state = NCSI_CHANNEL_INACTIVE;
spin_unlock_irqrestore(&nc->lock, flags);
ncsi_process_next_channel(ndp);
break;
default:
netdev_warn(nd->dev, "Wrong NCSI state 0x%x in suspend\n",
nd->state);
}
return;
error:
nd->state = ncsi_dev_state_functional;
}
/* Check the VLAN filter bitmap for a set filter, and construct a
* "Set VLAN Filter - Disable" packet if found.
*/
static int clear_one_vid(struct ncsi_dev_priv *ndp, struct ncsi_channel *nc,
struct ncsi_cmd_arg *nca)
{
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
struct ncsi_channel_vlan_filter *ncf;
unsigned long flags;
void *bitmap;
int index;
u16 vid;
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
ncf = &nc->vlan_filter;
bitmap = &ncf->bitmap;
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
spin_lock_irqsave(&nc->lock, flags);
index = find_next_bit(bitmap, ncf->n_vids, 0);
if (index >= ncf->n_vids) {
spin_unlock_irqrestore(&nc->lock, flags);
return -1;
}
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
vid = ncf->vids[index];
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
clear_bit(index, bitmap);
ncf->vids[index] = 0;
spin_unlock_irqrestore(&nc->lock, flags);
nca->type = NCSI_PKT_CMD_SVF;
nca->words[1] = vid;
/* HW filter index starts at 1 */
nca->bytes[6] = index + 1;
nca->bytes[7] = 0x00;
return 0;
}
/* Find an outstanding VLAN tag and constuct a "Set VLAN Filter - Enable"
* packet.
*/
static int set_one_vid(struct ncsi_dev_priv *ndp, struct ncsi_channel *nc,
struct ncsi_cmd_arg *nca)
{
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
struct ncsi_channel_vlan_filter *ncf;
struct vlan_vid *vlan = NULL;
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
unsigned long flags;
int i, index;
void *bitmap;
u16 vid;
if (list_empty(&ndp->vlan_vids))
return -1;
ncf = &nc->vlan_filter;
bitmap = &ncf->bitmap;
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
spin_lock_irqsave(&nc->lock, flags);
rcu_read_lock();
list_for_each_entry_rcu(vlan, &ndp->vlan_vids, list) {
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
vid = vlan->vid;
for (i = 0; i < ncf->n_vids; i++)
if (ncf->vids[i] == vid) {
vid = 0;
break;
}
if (vid)
break;
}
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
rcu_read_unlock();
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
if (!vid) {
/* No VLAN ID is not set */
spin_unlock_irqrestore(&nc->lock, flags);
return -1;
}
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
index = find_next_zero_bit(bitmap, ncf->n_vids, 0);
if (index < 0 || index >= ncf->n_vids) {
netdev_err(ndp->ndev.dev,
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
"Channel %u already has all VLAN filters set\n",
nc->id);
spin_unlock_irqrestore(&nc->lock, flags);
return -1;
}
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
ncf->vids[index] = vid;
set_bit(index, bitmap);
spin_unlock_irqrestore(&nc->lock, flags);
nca->type = NCSI_PKT_CMD_SVF;
net/ncsi: Refactor MAC, VLAN filters The NCSI driver defines a generic ncsi_channel_filter struct that can be used to store arbitrarily formatted filters, and several generic methods of accessing data stored in such a filter. However in both the driver and as defined in the NCSI specification there are only two actual filters: VLAN ID filters and MAC address filters. The splitting of the MAC filter into unicast, multicast, and mixed is also technically not necessary as these are stored in the same location in hardware. To save complexity, particularly in the set up and accessing of these generic filters, remove them in favour of two specific structs. These can be acted on directly and do not need several generic helper functions to use. This also fixes a memory error found by KASAN on ARM32 (which is not upstream yet), where response handlers accessing a filter's data field could write past allocated memory. [ 114.926512] ================================================================== [ 114.933861] BUG: KASAN: slab-out-of-bounds in ncsi_configure_channel+0x4b8/0xc58 [ 114.941304] Read of size 2 at addr 94888558 by task kworker/0:2/546 [ 114.947593] [ 114.949146] CPU: 0 PID: 546 Comm: kworker/0:2 Not tainted 4.16.0-rc6-00119-ge156398bfcad #13 ... [ 115.170233] The buggy address belongs to the object at 94888540 [ 115.170233] which belongs to the cache kmalloc-32 of size 32 [ 115.181917] The buggy address is located 24 bytes inside of [ 115.181917] 32-byte region [94888540, 94888560) [ 115.192115] The buggy address belongs to the page: [ 115.196943] page:9eeac100 count:1 mapcount:0 mapping:94888000 index:0x94888fc1 [ 115.204200] flags: 0x100(slab) [ 115.207330] raw: 00000100 94888000 94888fc1 0000003f 00000001 9eea2014 9eecaa74 96c003e0 [ 115.215444] page dumped because: kasan: bad access detected [ 115.221036] [ 115.222544] Memory state around the buggy address: [ 115.227384] 94888400: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 115.233959] 94888480: 00 00 00 fc fc fc fc fc 00 04 fc fc fc fc fc fc [ 115.240529] >94888500: 00 00 04 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.247077] ^ [ 115.252523] 94888580: 00 04 fc fc fc fc fc fc 06 fc fc fc fc fc fc fc [ 115.259093] 94888600: 00 00 06 fc fc fc fc fc 00 00 04 fc fc fc fc fc [ 115.265639] ================================================================== Reported-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-17 04:23:23 +00:00
nca->words[1] = vid;
/* HW filter index starts at 1 */
nca->bytes[6] = index + 1;
nca->bytes[7] = 0x01;
return 0;
}
static void ncsi_configure_channel(struct ncsi_dev_priv *ndp)
{
struct ncsi_dev *nd = &ndp->ndev;
struct net_device *dev = nd->dev;
struct ncsi_package *np = ndp->active_package;
struct ncsi_channel *nc = ndp->active_channel;
struct ncsi_channel *hot_nc = NULL;
struct ncsi_cmd_arg nca;
unsigned char index;
unsigned long flags;
int ret;
nca.ndp = ndp;
nca.req_flags = NCSI_REQ_FLAG_EVENT_DRIVEN;
switch (nd->state) {
case ncsi_dev_state_config:
case ncsi_dev_state_config_sp:
ndp->pending_req_num = 1;
/* Select the specific package */
nca.type = NCSI_PKT_CMD_SP;
if (ndp->flags & NCSI_DEV_HWA)
nca.bytes[0] = 0;
else
nca.bytes[0] = 1;
nca.package = np->id;
nca.channel = NCSI_RESERVED_CHANNEL;
ret = ncsi_xmit_cmd(&nca);
if (ret) {
netdev_err(ndp->ndev.dev,
"NCSI: Failed to transmit CMD_SP\n");
goto error;
}
nd->state = ncsi_dev_state_config_cis;
break;
case ncsi_dev_state_config_cis:
ndp->pending_req_num = 1;
/* Clear initial state */
nca.type = NCSI_PKT_CMD_CIS;
nca.package = np->id;
nca.channel = nc->id;
ret = ncsi_xmit_cmd(&nca);
if (ret) {
netdev_err(ndp->ndev.dev,
"NCSI: Failed to transmit CMD_CIS\n");
goto error;
}
nd->state = ncsi_dev_state_config_clear_vids;
break;
case ncsi_dev_state_config_clear_vids:
case ncsi_dev_state_config_svf:
case ncsi_dev_state_config_ev:
case ncsi_dev_state_config_sma:
case ncsi_dev_state_config_ebf:
#if IS_ENABLED(CONFIG_IPV6)
case ncsi_dev_state_config_egmf:
#endif
case ncsi_dev_state_config_ecnt:
case ncsi_dev_state_config_ec:
case ncsi_dev_state_config_ae:
case ncsi_dev_state_config_gls:
ndp->pending_req_num = 1;
nca.package = np->id;
nca.channel = nc->id;
/* Clear any active filters on the channel before setting */
if (nd->state == ncsi_dev_state_config_clear_vids) {
ret = clear_one_vid(ndp, nc, &nca);
if (ret) {
nd->state = ncsi_dev_state_config_svf;
schedule_work(&ndp->work);
break;
}
/* Repeat */
nd->state = ncsi_dev_state_config_clear_vids;
/* Add known VLAN tags to the filter */
} else if (nd->state == ncsi_dev_state_config_svf) {
ret = set_one_vid(ndp, nc, &nca);
if (ret) {
nd->state = ncsi_dev_state_config_ev;
schedule_work(&ndp->work);
break;
}
/* Repeat */
nd->state = ncsi_dev_state_config_svf;
/* Enable/Disable the VLAN filter */
} else if (nd->state == ncsi_dev_state_config_ev) {
if (list_empty(&ndp->vlan_vids)) {
nca.type = NCSI_PKT_CMD_DV;
} else {
nca.type = NCSI_PKT_CMD_EV;
nca.bytes[3] = NCSI_CAP_VLAN_NO;
}
nd->state = ncsi_dev_state_config_sma;
} else if (nd->state == ncsi_dev_state_config_sma) {
/* Use first entry in unicast filter table. Note that
* the MAC filter table starts from entry 1 instead of
* 0.
*/
nca.type = NCSI_PKT_CMD_SMA;
for (index = 0; index < 6; index++)
nca.bytes[index] = dev->dev_addr[index];
nca.bytes[6] = 0x1;
nca.bytes[7] = 0x1;
nd->state = ncsi_dev_state_config_ebf;
} else if (nd->state == ncsi_dev_state_config_ebf) {
nca.type = NCSI_PKT_CMD_EBF;
nca.dwords[0] = nc->caps[NCSI_CAP_BC].cap;
nd->state = ncsi_dev_state_config_ecnt;
#if IS_ENABLED(CONFIG_IPV6)
if (ndp->inet6_addr_num > 0 &&
(nc->caps[NCSI_CAP_GENERIC].cap &
NCSI_CAP_GENERIC_MC))
nd->state = ncsi_dev_state_config_egmf;
else
nd->state = ncsi_dev_state_config_ecnt;
} else if (nd->state == ncsi_dev_state_config_egmf) {
nca.type = NCSI_PKT_CMD_EGMF;
nca.dwords[0] = nc->caps[NCSI_CAP_MC].cap;
nd->state = ncsi_dev_state_config_ecnt;
#endif /* CONFIG_IPV6 */
} else if (nd->state == ncsi_dev_state_config_ecnt) {
nca.type = NCSI_PKT_CMD_ECNT;
nd->state = ncsi_dev_state_config_ec;
} else if (nd->state == ncsi_dev_state_config_ec) {
/* Enable AEN if it's supported */
nca.type = NCSI_PKT_CMD_EC;
nd->state = ncsi_dev_state_config_ae;
if (!(nc->caps[NCSI_CAP_AEN].cap & NCSI_CAP_AEN_MASK))
nd->state = ncsi_dev_state_config_gls;
} else if (nd->state == ncsi_dev_state_config_ae) {
nca.type = NCSI_PKT_CMD_AE;
nca.bytes[0] = 0;
nca.dwords[1] = nc->caps[NCSI_CAP_AEN].cap;
nd->state = ncsi_dev_state_config_gls;
} else if (nd->state == ncsi_dev_state_config_gls) {
nca.type = NCSI_PKT_CMD_GLS;
nd->state = ncsi_dev_state_config_done;
}
ret = ncsi_xmit_cmd(&nca);
if (ret) {
netdev_err(ndp->ndev.dev,
"NCSI: Failed to transmit CMD %x\n",
nca.type);
goto error;
}
break;
case ncsi_dev_state_config_done:
netdev_printk(KERN_DEBUG, ndp->ndev.dev,
"NCSI: channel %u config done\n", nc->id);
spin_lock_irqsave(&nc->lock, flags);
if (nc->reconfigure_needed) {
/* This channel's configuration has been updated
* part-way during the config state - start the
* channel configuration over
*/
nc->reconfigure_needed = false;
nc->state = NCSI_CHANNEL_INACTIVE;
spin_unlock_irqrestore(&nc->lock, flags);
spin_lock_irqsave(&ndp->lock, flags);
list_add_tail_rcu(&nc->link, &ndp->channel_queue);
spin_unlock_irqrestore(&ndp->lock, flags);
netdev_printk(KERN_DEBUG, dev,
"Dirty NCSI channel state reset\n");
ncsi_process_next_channel(ndp);
break;
}
if (nc->modes[NCSI_MODE_LINK].data[2] & 0x1) {
hot_nc = nc;
nc->state = NCSI_CHANNEL_ACTIVE;
} else {
hot_nc = NULL;
nc->state = NCSI_CHANNEL_INACTIVE;
netdev_dbg(ndp->ndev.dev,
"NCSI: channel %u link down after config\n",
nc->id);
}
spin_unlock_irqrestore(&nc->lock, flags);
/* Update the hot channel */
spin_lock_irqsave(&ndp->lock, flags);
ndp->hot_channel = hot_nc;
spin_unlock_irqrestore(&ndp->lock, flags);
ncsi_start_channel_monitor(nc);
ncsi_process_next_channel(ndp);
break;
default:
netdev_alert(dev, "Wrong NCSI state 0x%x in config\n",
nd->state);
}
return;
error:
ncsi_report_link(ndp, true);
}
static int ncsi_choose_active_channel(struct ncsi_dev_priv *ndp)
{
struct ncsi_package *np, *force_package;
struct ncsi_channel *nc, *found, *hot_nc, *force_channel;
struct ncsi_channel_mode *ncm;
unsigned long flags;
spin_lock_irqsave(&ndp->lock, flags);
hot_nc = ndp->hot_channel;
force_channel = ndp->force_channel;
force_package = ndp->force_package;
spin_unlock_irqrestore(&ndp->lock, flags);
/* Force a specific channel whether or not it has link if we have been
* configured to do so
*/
if (force_package && force_channel) {
found = force_channel;
ncm = &found->modes[NCSI_MODE_LINK];
if (!(ncm->data[2] & 0x1))
netdev_info(ndp->ndev.dev,
"NCSI: Channel %u forced, but it is link down\n",
found->id);
goto out;
}
/* The search is done once an inactive channel with up
* link is found.
*/
found = NULL;
NCSI_FOR_EACH_PACKAGE(ndp, np) {
if (ndp->force_package && np != ndp->force_package)
continue;
NCSI_FOR_EACH_CHANNEL(np, nc) {
spin_lock_irqsave(&nc->lock, flags);
if (!list_empty(&nc->link) ||
nc->state != NCSI_CHANNEL_INACTIVE) {
spin_unlock_irqrestore(&nc->lock, flags);
continue;
}
if (!found)
found = nc;
if (nc == hot_nc)
found = nc;
ncm = &nc->modes[NCSI_MODE_LINK];
if (ncm->data[2] & 0x1) {
spin_unlock_irqrestore(&nc->lock, flags);
found = nc;
goto out;
}
spin_unlock_irqrestore(&nc->lock, flags);
}
}
if (!found) {
netdev_warn(ndp->ndev.dev,
"NCSI: No channel found with link\n");
ncsi_report_link(ndp, true);
return -ENODEV;
}
ncm = &found->modes[NCSI_MODE_LINK];
netdev_printk(KERN_DEBUG, ndp->ndev.dev,
"NCSI: Channel %u added to queue (link %s)\n",
found->id, ncm->data[2] & 0x1 ? "up" : "down");
out:
spin_lock_irqsave(&ndp->lock, flags);
list_add_tail_rcu(&found->link, &ndp->channel_queue);
spin_unlock_irqrestore(&ndp->lock, flags);
return ncsi_process_next_channel(ndp);
}
static bool ncsi_check_hwa(struct ncsi_dev_priv *ndp)
{
struct ncsi_package *np;
struct ncsi_channel *nc;
unsigned int cap;
bool has_channel = false;
/* The hardware arbitration is disabled if any one channel
* doesn't support explicitly.
*/
NCSI_FOR_EACH_PACKAGE(ndp, np) {
NCSI_FOR_EACH_CHANNEL(np, nc) {
has_channel = true;
cap = nc->caps[NCSI_CAP_GENERIC].cap;
if (!(cap & NCSI_CAP_GENERIC_HWA) ||
(cap & NCSI_CAP_GENERIC_HWA_MASK) !=
NCSI_CAP_GENERIC_HWA_SUPPORT) {
ndp->flags &= ~NCSI_DEV_HWA;
return false;
}
}
}
if (has_channel) {
ndp->flags |= NCSI_DEV_HWA;
return true;
}
ndp->flags &= ~NCSI_DEV_HWA;
return false;
}
static int ncsi_enable_hwa(struct ncsi_dev_priv *ndp)
{
struct ncsi_package *np;
struct ncsi_channel *nc;
unsigned long flags;
/* Move all available channels to processing queue */
spin_lock_irqsave(&ndp->lock, flags);
NCSI_FOR_EACH_PACKAGE(ndp, np) {
NCSI_FOR_EACH_CHANNEL(np, nc) {
WARN_ON_ONCE(nc->state != NCSI_CHANNEL_INACTIVE ||
!list_empty(&nc->link));
ncsi_stop_channel_monitor(nc);
list_add_tail_rcu(&nc->link, &ndp->channel_queue);
}
}
spin_unlock_irqrestore(&ndp->lock, flags);
/* We can have no channels in extremely case */
if (list_empty(&ndp->channel_queue)) {
netdev_err(ndp->ndev.dev,
"NCSI: No available channels for HWA\n");
ncsi_report_link(ndp, false);
return -ENOENT;
}
return ncsi_process_next_channel(ndp);
}
static void ncsi_probe_channel(struct ncsi_dev_priv *ndp)
{
struct ncsi_dev *nd = &ndp->ndev;
struct ncsi_package *np;
struct ncsi_channel *nc;
struct ncsi_cmd_arg nca;
unsigned char index;
int ret;
nca.ndp = ndp;
nca.req_flags = NCSI_REQ_FLAG_EVENT_DRIVEN;
switch (nd->state) {
case ncsi_dev_state_probe:
nd->state = ncsi_dev_state_probe_deselect;
/* Fall through */
case ncsi_dev_state_probe_deselect:
ndp->pending_req_num = 8;
/* Deselect all possible packages */
nca.type = NCSI_PKT_CMD_DP;
nca.channel = NCSI_RESERVED_CHANNEL;
for (index = 0; index < 8; index++) {
nca.package = index;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
}
nd->state = ncsi_dev_state_probe_package;
break;
case ncsi_dev_state_probe_package:
ndp->pending_req_num = 16;
/* Select all possible packages */
nca.type = NCSI_PKT_CMD_SP;
nca.bytes[0] = 1;
nca.channel = NCSI_RESERVED_CHANNEL;
for (index = 0; index < 8; index++) {
nca.package = index;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
}
/* Disable all possible packages */
nca.type = NCSI_PKT_CMD_DP;
for (index = 0; index < 8; index++) {
nca.package = index;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
}
nd->state = ncsi_dev_state_probe_channel;
break;
case ncsi_dev_state_probe_channel:
if (!ndp->active_package)
ndp->active_package = list_first_or_null_rcu(
&ndp->packages, struct ncsi_package, node);
else if (list_is_last(&ndp->active_package->node,
&ndp->packages))
ndp->active_package = NULL;
else
ndp->active_package = list_next_entry(
ndp->active_package, node);
/* All available packages and channels are enumerated. The
* enumeration happens for once when the NCSI interface is
* started. So we need continue to start the interface after
* the enumeration.
*
* We have to choose an active channel before configuring it.
* Note that we possibly don't have active channel in extreme
* situation.
*/
if (!ndp->active_package) {
ndp->flags |= NCSI_DEV_PROBED;
if (ncsi_check_hwa(ndp))
ncsi_enable_hwa(ndp);
else
ncsi_choose_active_channel(ndp);
return;
}
/* Select the active package */
ndp->pending_req_num = 1;
nca.type = NCSI_PKT_CMD_SP;
nca.bytes[0] = 1;
nca.package = ndp->active_package->id;
nca.channel = NCSI_RESERVED_CHANNEL;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
nd->state = ncsi_dev_state_probe_cis;
break;
case ncsi_dev_state_probe_cis:
ndp->pending_req_num = NCSI_RESERVED_CHANNEL;
/* Clear initial state */
nca.type = NCSI_PKT_CMD_CIS;
nca.package = ndp->active_package->id;
for (index = 0; index < NCSI_RESERVED_CHANNEL; index++) {
nca.channel = index;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
}
nd->state = ncsi_dev_state_probe_gvi;
break;
case ncsi_dev_state_probe_gvi:
case ncsi_dev_state_probe_gc:
case ncsi_dev_state_probe_gls:
np = ndp->active_package;
ndp->pending_req_num = np->channel_num;
/* Retrieve version, capability or link status */
if (nd->state == ncsi_dev_state_probe_gvi)
nca.type = NCSI_PKT_CMD_GVI;
else if (nd->state == ncsi_dev_state_probe_gc)
nca.type = NCSI_PKT_CMD_GC;
else
nca.type = NCSI_PKT_CMD_GLS;
nca.package = np->id;
NCSI_FOR_EACH_CHANNEL(np, nc) {
nca.channel = nc->id;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
}
if (nd->state == ncsi_dev_state_probe_gvi)
nd->state = ncsi_dev_state_probe_gc;
else if (nd->state == ncsi_dev_state_probe_gc)
nd->state = ncsi_dev_state_probe_gls;
else
nd->state = ncsi_dev_state_probe_dp;
break;
case ncsi_dev_state_probe_dp:
ndp->pending_req_num = 1;
/* Deselect the active package */
nca.type = NCSI_PKT_CMD_DP;
nca.package = ndp->active_package->id;
nca.channel = NCSI_RESERVED_CHANNEL;
ret = ncsi_xmit_cmd(&nca);
if (ret)
goto error;
/* Scan channels in next package */
nd->state = ncsi_dev_state_probe_channel;
break;
default:
netdev_warn(nd->dev, "Wrong NCSI state 0x%0x in enumeration\n",
nd->state);
}
return;
error:
netdev_err(ndp->ndev.dev,
"NCSI: Failed to transmit cmd 0x%x during probe\n",
nca.type);
ncsi_report_link(ndp, true);
}
static void ncsi_dev_work(struct work_struct *work)
{
struct ncsi_dev_priv *ndp = container_of(work,
struct ncsi_dev_priv, work);
struct ncsi_dev *nd = &ndp->ndev;
switch (nd->state & ncsi_dev_state_major) {
case ncsi_dev_state_probe:
ncsi_probe_channel(ndp);
break;
case ncsi_dev_state_suspend:
ncsi_suspend_channel(ndp);
break;
case ncsi_dev_state_config:
ncsi_configure_channel(ndp);
break;
default:
netdev_warn(nd->dev, "Wrong NCSI state 0x%x in workqueue\n",
nd->state);
}
}
int ncsi_process_next_channel(struct ncsi_dev_priv *ndp)
{
struct ncsi_channel *nc;
int old_state;
unsigned long flags;
spin_lock_irqsave(&ndp->lock, flags);
nc = list_first_or_null_rcu(&ndp->channel_queue,
struct ncsi_channel, link);
if (!nc) {
spin_unlock_irqrestore(&ndp->lock, flags);
goto out;
}
list_del_init(&nc->link);
spin_unlock_irqrestore(&ndp->lock, flags);
spin_lock_irqsave(&nc->lock, flags);
old_state = nc->state;
nc->state = NCSI_CHANNEL_INVISIBLE;
spin_unlock_irqrestore(&nc->lock, flags);
ndp->active_channel = nc;
ndp->active_package = nc->package;
switch (old_state) {
case NCSI_CHANNEL_INACTIVE:
ndp->ndev.state = ncsi_dev_state_config;
netdev_dbg(ndp->ndev.dev, "NCSI: configuring channel %u\n",
nc->id);
ncsi_configure_channel(ndp);
break;
case NCSI_CHANNEL_ACTIVE:
ndp->ndev.state = ncsi_dev_state_suspend;
netdev_dbg(ndp->ndev.dev, "NCSI: suspending channel %u\n",
nc->id);
ncsi_suspend_channel(ndp);
break;
default:
netdev_err(ndp->ndev.dev, "Invalid state 0x%x on %d:%d\n",
old_state, nc->package->id, nc->id);
ncsi_report_link(ndp, false);
return -EINVAL;
}
return 0;
out:
ndp->active_channel = NULL;
ndp->active_package = NULL;
if (ndp->flags & NCSI_DEV_RESHUFFLE) {
ndp->flags &= ~NCSI_DEV_RESHUFFLE;
return ncsi_choose_active_channel(ndp);
}
ncsi_report_link(ndp, false);
return -ENODEV;
}
#if IS_ENABLED(CONFIG_IPV6)
static int ncsi_inet6addr_event(struct notifier_block *this,
unsigned long event, void *data)
{
struct inet6_ifaddr *ifa = data;
struct net_device *dev = ifa->idev->dev;
struct ncsi_dev *nd = ncsi_find_dev(dev);
struct ncsi_dev_priv *ndp = nd ? TO_NCSI_DEV_PRIV(nd) : NULL;
struct ncsi_package *np;
struct ncsi_channel *nc;
struct ncsi_cmd_arg nca;
bool action;
int ret;
if (!ndp || (ipv6_addr_type(&ifa->addr) &
(IPV6_ADDR_LINKLOCAL | IPV6_ADDR_LOOPBACK)))
return NOTIFY_OK;
switch (event) {
case NETDEV_UP:
action = (++ndp->inet6_addr_num) == 1;
nca.type = NCSI_PKT_CMD_EGMF;
break;
case NETDEV_DOWN:
action = (--ndp->inet6_addr_num == 0);
nca.type = NCSI_PKT_CMD_DGMF;
break;
default:
return NOTIFY_OK;
}
/* We might not have active channel or packages. The IPv6
* required multicast will be enabled when active channel
* or packages are chosen.
*/
np = ndp->active_package;
nc = ndp->active_channel;
if (!action || !np || !nc)
return NOTIFY_OK;
/* We needn't enable or disable it if the function isn't supported */
if (!(nc->caps[NCSI_CAP_GENERIC].cap & NCSI_CAP_GENERIC_MC))
return NOTIFY_OK;
nca.ndp = ndp;
nca.req_flags = 0;
nca.package = np->id;
nca.channel = nc->id;
nca.dwords[0] = nc->caps[NCSI_CAP_MC].cap;
ret = ncsi_xmit_cmd(&nca);
if (ret) {
netdev_warn(dev, "Fail to %s global multicast filter (%d)\n",
(event == NETDEV_UP) ? "enable" : "disable", ret);
return NOTIFY_DONE;
}
return NOTIFY_OK;
}
static struct notifier_block ncsi_inet6addr_notifier = {
.notifier_call = ncsi_inet6addr_event,
};
#endif /* CONFIG_IPV6 */
static int ncsi_kick_channels(struct ncsi_dev_priv *ndp)
{
struct ncsi_dev *nd = &ndp->ndev;
struct ncsi_channel *nc;
struct ncsi_package *np;
unsigned long flags;
unsigned int n = 0;
NCSI_FOR_EACH_PACKAGE(ndp, np) {
NCSI_FOR_EACH_CHANNEL(np, nc) {
spin_lock_irqsave(&nc->lock, flags);
/* Channels may be busy, mark dirty instead of
* kicking if;
* a) not ACTIVE (configured)
* b) in the channel_queue (to be configured)
* c) it's ndev is in the config state
*/
if (nc->state != NCSI_CHANNEL_ACTIVE) {
if ((ndp->ndev.state & 0xff00) ==
ncsi_dev_state_config ||
!list_empty(&nc->link)) {
netdev_printk(KERN_DEBUG, nd->dev,
"NCSI: channel %p marked dirty\n",
nc);
nc->reconfigure_needed = true;
}
spin_unlock_irqrestore(&nc->lock, flags);
continue;
}
spin_unlock_irqrestore(&nc->lock, flags);
ncsi_stop_channel_monitor(nc);
spin_lock_irqsave(&nc->lock, flags);
nc->state = NCSI_CHANNEL_INACTIVE;
spin_unlock_irqrestore(&nc->lock, flags);
spin_lock_irqsave(&ndp->lock, flags);
list_add_tail_rcu(&nc->link, &ndp->channel_queue);
spin_unlock_irqrestore(&ndp->lock, flags);
netdev_printk(KERN_DEBUG, nd->dev,
"NCSI: kicked channel %p\n", nc);
n++;
}
}
return n;
}
int ncsi_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
{
struct ncsi_dev_priv *ndp;
unsigned int n_vids = 0;
struct vlan_vid *vlan;
struct ncsi_dev *nd;
bool found = false;
if (vid == 0)
return 0;
nd = ncsi_find_dev(dev);
if (!nd) {
netdev_warn(dev, "NCSI: No net_device?\n");
return 0;
}
ndp = TO_NCSI_DEV_PRIV(nd);
/* Add the VLAN id to our internal list */
list_for_each_entry_rcu(vlan, &ndp->vlan_vids, list) {
n_vids++;
if (vlan->vid == vid) {
netdev_printk(KERN_DEBUG, dev,
"NCSI: vid %u already registered\n", vid);
return 0;
}
}
if (n_vids >= NCSI_MAX_VLAN_VIDS) {
netdev_warn(dev,
"tried to add vlan id %u but NCSI max already registered (%u)\n",
vid, NCSI_MAX_VLAN_VIDS);
return -ENOSPC;
}
vlan = kzalloc(sizeof(*vlan), GFP_KERNEL);
if (!vlan)
return -ENOMEM;
vlan->proto = proto;
vlan->vid = vid;
list_add_rcu(&vlan->list, &ndp->vlan_vids);
netdev_printk(KERN_DEBUG, dev, "NCSI: Added new vid %u\n", vid);
found = ncsi_kick_channels(ndp) != 0;
return found ? ncsi_process_next_channel(ndp) : 0;
}
EXPORT_SYMBOL_GPL(ncsi_vlan_rx_add_vid);
int ncsi_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
{
struct vlan_vid *vlan, *tmp;
struct ncsi_dev_priv *ndp;
struct ncsi_dev *nd;
bool found = false;
if (vid == 0)
return 0;
nd = ncsi_find_dev(dev);
if (!nd) {
netdev_warn(dev, "NCSI: no net_device?\n");
return 0;
}
ndp = TO_NCSI_DEV_PRIV(nd);
/* Remove the VLAN id from our internal list */
list_for_each_entry_safe(vlan, tmp, &ndp->vlan_vids, list)
if (vlan->vid == vid) {
netdev_printk(KERN_DEBUG, dev,
"NCSI: vid %u found, removing\n", vid);
list_del_rcu(&vlan->list);
found = true;
kfree(vlan);
}
if (!found) {
netdev_err(dev, "NCSI: vid %u wasn't registered!\n", vid);
return -EINVAL;
}
found = ncsi_kick_channels(ndp) != 0;
return found ? ncsi_process_next_channel(ndp) : 0;
}
EXPORT_SYMBOL_GPL(ncsi_vlan_rx_kill_vid);
struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
void (*handler)(struct ncsi_dev *ndev))
{
struct ncsi_dev_priv *ndp;
struct ncsi_dev *nd;
unsigned long flags;
int i;
/* Check if the device has been registered or not */
nd = ncsi_find_dev(dev);
if (nd)
return nd;
/* Create NCSI device */
ndp = kzalloc(sizeof(*ndp), GFP_ATOMIC);
if (!ndp)
return NULL;
nd = &ndp->ndev;
nd->state = ncsi_dev_state_registered;
nd->dev = dev;
nd->handler = handler;
ndp->pending_req_num = 0;
INIT_LIST_HEAD(&ndp->channel_queue);
INIT_LIST_HEAD(&ndp->vlan_vids);
INIT_WORK(&ndp->work, ncsi_dev_work);
/* Initialize private NCSI device */
spin_lock_init(&ndp->lock);
INIT_LIST_HEAD(&ndp->packages);
ndp->request_id = NCSI_REQ_START_IDX;
for (i = 0; i < ARRAY_SIZE(ndp->requests); i++) {
ndp->requests[i].id = i;
ndp->requests[i].ndp = ndp;
treewide: setup_timer() -> timer_setup() 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>
2017-10-16 21:43:17 +00:00
timer_setup(&ndp->requests[i].timer, ncsi_request_timeout, 0);
}
spin_lock_irqsave(&ncsi_dev_lock, flags);
#if IS_ENABLED(CONFIG_IPV6)
ndp->inet6_addr_num = 0;
if (list_empty(&ncsi_dev_list))
register_inet6addr_notifier(&ncsi_inet6addr_notifier);
#endif
list_add_tail_rcu(&ndp->node, &ncsi_dev_list);
spin_unlock_irqrestore(&ncsi_dev_lock, flags);
/* Register NCSI packet Rx handler */
ndp->ptype.type = cpu_to_be16(ETH_P_NCSI);
ndp->ptype.func = ncsi_rcv_rsp;
ndp->ptype.dev = dev;
dev_add_pack(&ndp->ptype);
/* Set up generic netlink interface */
ncsi_init_netlink(dev);
return nd;
}
EXPORT_SYMBOL_GPL(ncsi_register_dev);
int ncsi_start_dev(struct ncsi_dev *nd)
{
struct ncsi_dev_priv *ndp = TO_NCSI_DEV_PRIV(nd);
int ret;
if (nd->state != ncsi_dev_state_registered &&
nd->state != ncsi_dev_state_functional)
return -ENOTTY;
if (!(ndp->flags & NCSI_DEV_PROBED)) {
nd->state = ncsi_dev_state_probe;
schedule_work(&ndp->work);
return 0;
}
if (ndp->flags & NCSI_DEV_HWA) {
netdev_info(ndp->ndev.dev, "NCSI: Enabling HWA mode\n");
ret = ncsi_enable_hwa(ndp);
} else {
ret = ncsi_choose_active_channel(ndp);
}
return ret;
}
EXPORT_SYMBOL_GPL(ncsi_start_dev);
void ncsi_stop_dev(struct ncsi_dev *nd)
{
struct ncsi_dev_priv *ndp = TO_NCSI_DEV_PRIV(nd);
struct ncsi_package *np;
struct ncsi_channel *nc;
bool chained;
int old_state;
unsigned long flags;
/* Stop the channel monitor and reset channel's state */
NCSI_FOR_EACH_PACKAGE(ndp, np) {
NCSI_FOR_EACH_CHANNEL(np, nc) {
ncsi_stop_channel_monitor(nc);
spin_lock_irqsave(&nc->lock, flags);
chained = !list_empty(&nc->link);
old_state = nc->state;
nc->state = NCSI_CHANNEL_INACTIVE;
spin_unlock_irqrestore(&nc->lock, flags);
WARN_ON_ONCE(chained ||
old_state == NCSI_CHANNEL_INVISIBLE);
}
}
netdev_printk(KERN_DEBUG, ndp->ndev.dev, "NCSI: Stopping device\n");
ncsi_report_link(ndp, true);
}
EXPORT_SYMBOL_GPL(ncsi_stop_dev);
void ncsi_unregister_dev(struct ncsi_dev *nd)
{
struct ncsi_dev_priv *ndp = TO_NCSI_DEV_PRIV(nd);
struct ncsi_package *np, *tmp;
unsigned long flags;
dev_remove_pack(&ndp->ptype);
list_for_each_entry_safe(np, tmp, &ndp->packages, node)
ncsi_remove_package(np);
spin_lock_irqsave(&ncsi_dev_lock, flags);
list_del_rcu(&ndp->node);
#if IS_ENABLED(CONFIG_IPV6)
if (list_empty(&ncsi_dev_list))
unregister_inet6addr_notifier(&ncsi_inet6addr_notifier);
#endif
spin_unlock_irqrestore(&ncsi_dev_lock, flags);
ncsi_unregister_netlink(nd->dev);
kfree(ndp);
}
EXPORT_SYMBOL_GPL(ncsi_unregister_dev);