/*
 * Copyright 2006, Johannes Berg <johannes@sipsolutions.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/leds.h>
#include "ieee80211_i.h"

#define MAC80211_BLINK_DELAY 50 /* ms */

static inline void ieee80211_led_rx(struct ieee80211_local *local)
{
#ifdef CONFIG_MAC80211_LEDS
	unsigned long led_delay = MAC80211_BLINK_DELAY;

	if (!atomic_read(&local->rx_led_active))
		return;
	led_trigger_blink_oneshot(&local->rx_led, &led_delay, &led_delay, 0);
#endif
}

static inline void ieee80211_led_tx(struct ieee80211_local *local)
{
#ifdef CONFIG_MAC80211_LEDS
	unsigned long led_delay = MAC80211_BLINK_DELAY;

	if (!atomic_read(&local->tx_led_active))
		return;
	led_trigger_blink_oneshot(&local->tx_led, &led_delay, &led_delay, 0);
#endif
}

#ifdef CONFIG_MAC80211_LEDS
void ieee80211_led_assoc(struct ieee80211_local *local,
			 bool associated);
void ieee80211_led_radio(struct ieee80211_local *local,
			 bool enabled);
void ieee80211_alloc_led_names(struct ieee80211_local *local);
void ieee80211_free_led_names(struct ieee80211_local *local);
void ieee80211_led_init(struct ieee80211_local *local);
void ieee80211_led_exit(struct ieee80211_local *local);
void ieee80211_mod_tpt_led_trig(struct ieee80211_local *local,
				unsigned int types_on, unsigned int types_off);
#else
static inline void ieee80211_led_assoc(struct ieee80211_local *local,
				       bool associated)
{
}
static inline void ieee80211_led_radio(struct ieee80211_local *local,
				       bool enabled)
{
}
static inline void ieee80211_alloc_led_names(struct ieee80211_local *local)
{
}
static inline void ieee80211_free_led_names(struct ieee80211_local *local)
{
}
static inline void ieee80211_led_init(struct ieee80211_local *local)
{
}
static inline void ieee80211_led_exit(struct ieee80211_local *local)
{
}
static inline void ieee80211_mod_tpt_led_trig(struct ieee80211_local *local,
					      unsigned int types_on,
					      unsigned int types_off)
{
}
#endif

static inline void
ieee80211_tpt_led_trig_tx(struct ieee80211_local *local, __le16 fc, int bytes)
{
#ifdef CONFIG_MAC80211_LEDS
	if (ieee80211_is_data(fc) && atomic_read(&local->tpt_led_active))
		local->tpt_led_trigger->tx_bytes += bytes;
#endif
}

static inline void
ieee80211_tpt_led_trig_rx(struct ieee80211_local *local, __le16 fc, int bytes)
{
#ifdef CONFIG_MAC80211_LEDS
	if (ieee80211_is_data(fc) && atomic_read(&local->tpt_led_active))
		local->tpt_led_trigger->rx_bytes += bytes;
#endif
}
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=b08d46b01e995dd7b653b22d35bd1d958d6ee9b4&amp;showmsg=1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools?id=b08d46b01e995dd7b653b22d35bd1d958d6ee9b4&amp;showmsg=1'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/testing?id=b08d46b01e995dd7b653b22d35bd1d958d6ee9b4&amp;showmsg=1'>testing</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests?id=b08d46b01e995dd7b653b22d35bd1d958d6ee9b4&amp;showmsg=1'>selftests</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/tools/testing/selftests?id=b08d46b01e995dd7b653b22d35bd1d958d6ee9b4'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr class='logheader'><td><span title='2017-02-06 22:50:04 -0500'>2017-02-06</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests?id=63dfef75ed75364901d7caa52c6420cec3e73519'>bpf: enable verifier to add 0 to packet ptr</a></td><td>William Tu</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+23</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
The patch fixes the case when adding a zero value to the packet
pointer.  The zero value could come from src_reg equals type
BPF_K or CONST_IMM.  The patch fixes both, otherwise the verifer
reports the following error:
  [...]
    R0=imm0,min_value=0,max_value=0
    R1=pkt(id=0,off=0,r=4)
    R2=pkt_end R3=fp-12
    R4=imm4,min_value=4,max_value=4
    R5=pkt(id=0,off=4,r=4)
  269: (bf) r2 = r0     // r2 becomes imm0
  270: (77) r2 &gt;&gt;= 3
  271: (bf) r4 = r1     // r4 becomes pkt ptr
  272: (0f) r4 += r2    // r4 += 0
  addition of negative constant to packet pointer is not allowed

Signed-off-by: William Tu &lt;u9012063@gmail.com&gt;
Signed-off-by: Mihai Budiu &lt;mbudiu@vmware.com&gt;
Cc: Daniel Borkmann &lt;daniel@iogearbox.net&gt;
Cc: Alexei Starovoitov &lt;ast@kernel.org&gt;
Acked-by: Daniel Borkmann &lt;daniel@iogearbox.net&gt;
Acked-by: Alexei Starovoitov &lt;ast@kernel.org&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


</td></tr>
<tr class='logheader'><td><span title='2017-02-06 22:35:58 -0500'>2017-02-06</span></td><td class='logsubject'><a href='/cgit.cgi/linux/net-next.git/commit/tools/testing/selftests?id=29200c199cc9bde59033ab30fcc40b6c8ae630b0'>bpf: test for AND edge cases</a></td><td>Josef Bacik</td><td>1</td><td><span class='deletions'>-0</span>/<span class='insertions'>+55</span></td></tr>
<tr class='nohover-highlight'><td/><td colspan='5' class='logmsg'>
These two tests are based on the work done for f23cc643f9ba.  The first test is
just a basic one to make sure we don't allow AND'ing negative values, even if it
would result in a valid index for the array.  The second is a cleaned up version
of the original testcase provided by Jann Horn that resulted in the commit.

Acked-by: Alexei Starovoitov &lt;ast@kernel.org&gt;
Acked-by: Daniel Borkmann &lt;daniel@iogearbox.net&gt;
Signed-off-by: Josef Bacik &lt;jbacik@fb.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;


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