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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 *
4 * Authors:
5 * Alexander Aring <aar@pengutronix.de>
6 *
7 * Based on: net/mac80211/util.c
8 */
9
10#include "ieee802154_i.h"
11#include "driver-ops.h"
12
13/* privid for wpan_phys to determine whether they belong to us or not */
14const void *const mac802154_wpan_phy_privid = &mac802154_wpan_phy_privid;
15
16void ieee802154_wake_queue(struct ieee802154_hw *hw)
17{
18 struct ieee802154_local *local = hw_to_local(hw);
19 struct ieee802154_sub_if_data *sdata;
20
21 rcu_read_lock();
22 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
23 if (!sdata->dev)
24 continue;
25
26 netif_wake_queue(sdata->dev);
27 }
28 rcu_read_unlock();
29}
30EXPORT_SYMBOL(ieee802154_wake_queue);
31
32void ieee802154_stop_queue(struct ieee802154_hw *hw)
33{
34 struct ieee802154_local *local = hw_to_local(hw);
35 struct ieee802154_sub_if_data *sdata;
36
37 rcu_read_lock();
38 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
39 if (!sdata->dev)
40 continue;
41
42 netif_stop_queue(sdata->dev);
43 }
44 rcu_read_unlock();
45}
46EXPORT_SYMBOL(ieee802154_stop_queue);
47
48enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer)
49{
50 struct ieee802154_local *local =
51 container_of(timer, struct ieee802154_local, ifs_timer);
52
53 ieee802154_wake_queue(&local->hw);
54
55 return HRTIMER_NORESTART;
56}
57
58void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
59 bool ifs_handling)
60{
61 if (ifs_handling) {
62 struct ieee802154_local *local = hw_to_local(hw);
63 u8 max_sifs_size;
64
65 /* If transceiver sets CRC on his own we need to use lifs
66 * threshold len above 16 otherwise 18, because it's not
67 * part of skb->len.
68 */
69 if (hw->flags & IEEE802154_HW_TX_OMIT_CKSUM)
70 max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE -
71 IEEE802154_FCS_LEN;
72 else
73 max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE;
74
75 if (skb->len > max_sifs_size)
76 hrtimer_start(&local->ifs_timer,
77 hw->phy->lifs_period * NSEC_PER_USEC,
78 HRTIMER_MODE_REL);
79 else
80 hrtimer_start(&local->ifs_timer,
81 hw->phy->sifs_period * NSEC_PER_USEC,
82 HRTIMER_MODE_REL);
83 } else {
84 ieee802154_wake_queue(hw);
85 }
86
87 dev_consume_skb_any(skb);
88}
89EXPORT_SYMBOL(ieee802154_xmit_complete);
90
91void ieee802154_stop_device(struct ieee802154_local *local)
92{
93 flush_workqueue(local->workqueue);
94 hrtimer_cancel(&local->ifs_timer);
95 drv_stop(local);
96}
1/* This program is free software; you can redistribute it and/or modify
2 * it under the terms of the GNU General Public License version 2
3 * as published by the Free Software Foundation.
4 *
5 * This program is distributed in the hope that it will be useful,
6 * but WITHOUT ANY WARRANTY; without even the implied warranty of
7 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
8 * GNU General Public License for more details.
9 *
10 * Authors:
11 * Alexander Aring <aar@pengutronix.de>
12 *
13 * Based on: net/mac80211/util.c
14 */
15
16#include "ieee802154_i.h"
17#include "driver-ops.h"
18
19/* privid for wpan_phys to determine whether they belong to us or not */
20const void *const mac802154_wpan_phy_privid = &mac802154_wpan_phy_privid;
21
22void ieee802154_wake_queue(struct ieee802154_hw *hw)
23{
24 struct ieee802154_local *local = hw_to_local(hw);
25 struct ieee802154_sub_if_data *sdata;
26
27 rcu_read_lock();
28 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
29 if (!sdata->dev)
30 continue;
31
32 netif_wake_queue(sdata->dev);
33 }
34 rcu_read_unlock();
35}
36EXPORT_SYMBOL(ieee802154_wake_queue);
37
38void ieee802154_stop_queue(struct ieee802154_hw *hw)
39{
40 struct ieee802154_local *local = hw_to_local(hw);
41 struct ieee802154_sub_if_data *sdata;
42
43 rcu_read_lock();
44 list_for_each_entry_rcu(sdata, &local->interfaces, list) {
45 if (!sdata->dev)
46 continue;
47
48 netif_stop_queue(sdata->dev);
49 }
50 rcu_read_unlock();
51}
52EXPORT_SYMBOL(ieee802154_stop_queue);
53
54enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer)
55{
56 struct ieee802154_local *local =
57 container_of(timer, struct ieee802154_local, ifs_timer);
58
59 ieee802154_wake_queue(&local->hw);
60
61 return HRTIMER_NORESTART;
62}
63
64void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb,
65 bool ifs_handling)
66{
67 if (ifs_handling) {
68 struct ieee802154_local *local = hw_to_local(hw);
69 u8 max_sifs_size;
70
71 /* If transceiver sets CRC on his own we need to use lifs
72 * threshold len above 16 otherwise 18, because it's not
73 * part of skb->len.
74 */
75 if (hw->flags & IEEE802154_HW_TX_OMIT_CKSUM)
76 max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE -
77 IEEE802154_FCS_LEN;
78 else
79 max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE;
80
81 if (skb->len > max_sifs_size)
82 hrtimer_start(&local->ifs_timer,
83 hw->phy->lifs_period * NSEC_PER_USEC,
84 HRTIMER_MODE_REL);
85 else
86 hrtimer_start(&local->ifs_timer,
87 hw->phy->sifs_period * NSEC_PER_USEC,
88 HRTIMER_MODE_REL);
89 } else {
90 ieee802154_wake_queue(hw);
91 }
92
93 dev_consume_skb_any(skb);
94}
95EXPORT_SYMBOL(ieee802154_xmit_complete);
96
97void ieee802154_stop_device(struct ieee802154_local *local)
98{
99 flush_workqueue(local->workqueue);
100 hrtimer_cancel(&local->ifs_timer);
101 drv_stop(local);
102}