projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| c2085103 AA |
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 | ||
| 6322d50d AA |
18 | /* privid for wpan_phys to determine whether they belong to us or not */ |
| 19 | const void *const mac802154_wpan_phy_privid = &mac802154_wpan_phy_privid; | |
| 20 | ||
| c2085103 AA |
21 | void ieee802154_wake_queue(struct ieee802154_hw *hw) |
| 22 | { | |
| 23 | struct ieee802154_local *local = hw_to_local(hw); | |
| 24 | struct ieee802154_sub_if_data *sdata; | |
| 25 | ||
| 26 | rcu_read_lock(); | |
| 27 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
| 28 | if (!sdata->dev) | |
| 29 | continue; | |
| 30 | ||
| 31 | netif_wake_queue(sdata->dev); | |
| 32 | } | |
| 33 | rcu_read_unlock(); | |
| 34 | } | |
| 35 | EXPORT_SYMBOL(ieee802154_wake_queue); | |
| 36 | ||
| 37 | void ieee802154_stop_queue(struct ieee802154_hw *hw) | |
| 38 | { | |
| 39 | struct ieee802154_local *local = hw_to_local(hw); | |
| 40 | struct ieee802154_sub_if_data *sdata; | |
| 41 | ||
| 42 | rcu_read_lock(); | |
| 43 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { | |
| 44 | if (!sdata->dev) | |
| 45 | continue; | |
| 46 | ||
| 47 | netif_stop_queue(sdata->dev); | |
| 48 | } | |
| 49 | rcu_read_unlock(); | |
| 50 | } | |
| 51 | EXPORT_SYMBOL(ieee802154_stop_queue); | |
| 52 | ||
| 61f2dcba | 53 | enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer) |
| c2085103 | 54 | { |
| 61f2dcba AA |
55 | struct ieee802154_local *local = |
| 56 | container_of(timer, struct ieee802154_local, ifs_timer); | |
| 57 | ||
| 58 | ieee802154_wake_queue(&local->hw); | |
| 59 | ||
| 60 | return HRTIMER_NORESTART; | |
| 61 | } | |
| 62 | ||
| 63 | void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb, | |
| 64 | bool ifs_handling) | |
| 65 | { | |
| 66 | if (ifs_handling) { | |
| 67 | struct ieee802154_local *local = hw_to_local(hw); | |
| 3f3c4bb5 | 68 | u8 max_sifs_size; |
| 61f2dcba | 69 | |
| 3f3c4bb5 AA |
70 | /* If transceiver sets CRC on his own we need to use lifs |
| 71 | * threshold len above 16 otherwise 18, because it's not | |
| 72 | * part of skb->len. | |
| 73 | */ | |
| 74 | if (hw->flags & IEEE802154_HW_TX_OMIT_CKSUM) | |
| 75 | max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE - | |
| 76 | IEEE802154_FCS_LEN; | |
| 77 | else | |
| 78 | max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE; | |
| 79 | ||
| 80 | if (skb->len > max_sifs_size) | |
| 61f2dcba AA |
81 | hrtimer_start(&local->ifs_timer, |
| 82 | ktime_set(0, hw->phy->lifs_period * NSEC_PER_USEC), | |
| 83 | HRTIMER_MODE_REL); | |
| 84 | else | |
| 85 | hrtimer_start(&local->ifs_timer, | |
| 86 | ktime_set(0, hw->phy->sifs_period * NSEC_PER_USEC), | |
| 87 | HRTIMER_MODE_REL); | |
| 88 | ||
| 89 | consume_skb(skb); | |
| 90 | } else { | |
| 91 | ieee802154_wake_queue(hw); | |
| 92 | consume_skb(skb); | |
| 93 | } | |
| c2085103 AA |
94 | } |
| 95 | EXPORT_SYMBOL(ieee802154_xmit_complete); |