Commit | Line | Data |
---|---|---|
1802d0be TG |
1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* | |
c2085103 AA |
3 | * |
4 | * Authors: | |
5 | * Alexander Aring <aar@pengutronix.de> | |
6 | * | |
7 | * Based on: net/mac80211/util.c | |
8 | */ | |
9 | ||
10 | #include "ieee802154_i.h" | |
c4227c8a | 11 | #include "driver-ops.h" |
c2085103 | 12 | |
6322d50d AA |
13 | /* privid for wpan_phys to determine whether they belong to us or not */ |
14 | const void *const mac802154_wpan_phy_privid = &mac802154_wpan_phy_privid; | |
15 | ||
c2085103 AA |
16 | void 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 | } | |
30 | EXPORT_SYMBOL(ieee802154_wake_queue); | |
31 | ||
32 | void 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 | } | |
46 | EXPORT_SYMBOL(ieee802154_stop_queue); | |
47 | ||
61f2dcba | 48 | enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer) |
c2085103 | 49 | { |
61f2dcba AA |
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 | ||
58 | void 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); | |
3f3c4bb5 | 63 | u8 max_sifs_size; |
61f2dcba | 64 | |
3f3c4bb5 AA |
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) | |
61f2dcba | 76 | hrtimer_start(&local->ifs_timer, |
8b0e1953 | 77 | hw->phy->lifs_period * NSEC_PER_USEC, |
61f2dcba AA |
78 | HRTIMER_MODE_REL); |
79 | else | |
80 | hrtimer_start(&local->ifs_timer, | |
8b0e1953 | 81 | hw->phy->sifs_period * NSEC_PER_USEC, |
61f2dcba | 82 | HRTIMER_MODE_REL); |
61f2dcba AA |
83 | } else { |
84 | ieee802154_wake_queue(hw); | |
61f2dcba | 85 | } |
3862eba6 AA |
86 | |
87 | dev_consume_skb_any(skb); | |
c2085103 AA |
88 | } |
89 | EXPORT_SYMBOL(ieee802154_xmit_complete); | |
c4227c8a AA |
90 | |
91 | void ieee802154_stop_device(struct ieee802154_local *local) | |
92 | { | |
93 | flush_workqueue(local->workqueue); | |
94 | hrtimer_cancel(&local->ifs_timer); | |
95 | drv_stop(local); | |
96 | } |