From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- net/mac802154/util.c | 102 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+) create mode 100644 net/mac802154/util.c (limited to 'net/mac802154/util.c') diff --git a/net/mac802154/util.c b/net/mac802154/util.c new file mode 100644 index 000000000..7c03fb0ea --- /dev/null +++ b/net/mac802154/util.c @@ -0,0 +1,102 @@ +/* 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Authors: + * Alexander Aring + * + * Based on: net/mac80211/util.c + */ + +#include "ieee802154_i.h" +#include "driver-ops.h" + +/* privid for wpan_phys to determine whether they belong to us or not */ +const void *const mac802154_wpan_phy_privid = &mac802154_wpan_phy_privid; + +void ieee802154_wake_queue(struct ieee802154_hw *hw) +{ + struct ieee802154_local *local = hw_to_local(hw); + struct ieee802154_sub_if_data *sdata; + + rcu_read_lock(); + list_for_each_entry_rcu(sdata, &local->interfaces, list) { + if (!sdata->dev) + continue; + + netif_wake_queue(sdata->dev); + } + rcu_read_unlock(); +} +EXPORT_SYMBOL(ieee802154_wake_queue); + +void ieee802154_stop_queue(struct ieee802154_hw *hw) +{ + struct ieee802154_local *local = hw_to_local(hw); + struct ieee802154_sub_if_data *sdata; + + rcu_read_lock(); + list_for_each_entry_rcu(sdata, &local->interfaces, list) { + if (!sdata->dev) + continue; + + netif_stop_queue(sdata->dev); + } + rcu_read_unlock(); +} +EXPORT_SYMBOL(ieee802154_stop_queue); + +enum hrtimer_restart ieee802154_xmit_ifs_timer(struct hrtimer *timer) +{ + struct ieee802154_local *local = + container_of(timer, struct ieee802154_local, ifs_timer); + + ieee802154_wake_queue(&local->hw); + + return HRTIMER_NORESTART; +} + +void ieee802154_xmit_complete(struct ieee802154_hw *hw, struct sk_buff *skb, + bool ifs_handling) +{ + if (ifs_handling) { + struct ieee802154_local *local = hw_to_local(hw); + u8 max_sifs_size; + + /* If transceiver sets CRC on his own we need to use lifs + * threshold len above 16 otherwise 18, because it's not + * part of skb->len. + */ + if (hw->flags & IEEE802154_HW_TX_OMIT_CKSUM) + max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE - + IEEE802154_FCS_LEN; + else + max_sifs_size = IEEE802154_MAX_SIFS_FRAME_SIZE; + + if (skb->len > max_sifs_size) + hrtimer_start(&local->ifs_timer, + hw->phy->lifs_period * NSEC_PER_USEC, + HRTIMER_MODE_REL); + else + hrtimer_start(&local->ifs_timer, + hw->phy->sifs_period * NSEC_PER_USEC, + HRTIMER_MODE_REL); + } else { + ieee802154_wake_queue(hw); + } + + dev_consume_skb_any(skb); +} +EXPORT_SYMBOL(ieee802154_xmit_complete); + +void ieee802154_stop_device(struct ieee802154_local *local) +{ + flush_workqueue(local->workqueue); + hrtimer_cancel(&local->ifs_timer); + drv_stop(local); +} -- cgit v1.2.3