From cf9610f9116d55c5a66ef9f1faecacabd93a9322 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 24 Aug 2026 08:46:03 -0700 Subject: Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ... --- net/mac802154/tx.c | 240 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 240 insertions(+) create mode 100644 net/mac802154/tx.c (limited to 'net/mac802154/tx.c') diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c new file mode 100644 index 000000000..4d13f18f6 --- /dev/null +++ b/net/mac802154/tx.c @@ -0,0 +1,240 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2007-2012 Siemens AG + * + * Written by: + * Dmitry Eremin-Solenikov + * Sergey Lapin + * Maxim Gorbachyov + * Alexander Smirnov + */ + +#include +#include +#include +#include + +#include +#include +#include +#include + +#include "ieee802154_i.h" +#include "driver-ops.h" + +void ieee802154_xmit_sync_worker(struct work_struct *work) +{ + struct ieee802154_local *local = + container_of(work, struct ieee802154_local, sync_tx_work); + struct sk_buff *skb = local->tx_skb; + struct net_device *dev = skb->dev; + int res; + + res = drv_xmit_sync(local, skb); + if (res) + goto err_tx; + + DEV_STATS_INC(dev, tx_packets); + DEV_STATS_ADD(dev, tx_bytes, skb->len); + + ieee802154_xmit_complete(&local->hw, skb, false); + + return; + +err_tx: + /* Restart the netif queue on each sub_if_data object. */ + ieee802154_release_queue(local); + if (atomic_dec_and_test(&local->phy->ongoing_txs)) + wake_up(&local->phy->sync_txq); + kfree_skb(skb); + netdev_dbg(dev, "transmission failed\n"); +} + +static netdev_tx_t +ieee802154_tx(struct ieee802154_local *local, struct sk_buff *skb) +{ + struct net_device *dev = skb->dev; + int ret; + + if (!(local->hw.flags & IEEE802154_HW_TX_OMIT_CKSUM)) { + struct sk_buff *nskb; + u16 crc; + + if (unlikely(skb_tailroom(skb) < IEEE802154_FCS_LEN)) { + nskb = skb_copy_expand(skb, 0, IEEE802154_FCS_LEN, + GFP_ATOMIC); + if (likely(nskb)) { + consume_skb(skb); + skb = nskb; + } else { + goto err_free_skb; + } + } + + crc = crc_ccitt(0, skb->data, skb->len); + put_unaligned_le16(crc, skb_put(skb, 2)); + } + + /* Stop the netif queue on each sub_if_data object. */ + ieee802154_hold_queue(local); + atomic_inc(&local->phy->ongoing_txs); + + /* Drivers should preferably implement the async callback. In some rare + * cases they only provide a sync callback which we will use as a + * fallback. + */ + if (local->ops->xmit_async) { + unsigned int len = skb->len; + + ret = drv_xmit_async(local, skb); + if (ret) + goto err_wake_netif_queue; + + DEV_STATS_INC(dev, tx_packets); + DEV_STATS_ADD(dev, tx_bytes, len); + } else { + local->tx_skb = skb; + queue_work(local->workqueue, &local->sync_tx_work); + } + + return NETDEV_TX_OK; + +err_wake_netif_queue: + ieee802154_release_queue(local); + if (atomic_dec_and_test(&local->phy->ongoing_txs)) + wake_up(&local->phy->sync_txq); +err_free_skb: + kfree_skb(skb); + return NETDEV_TX_OK; +} + +static int ieee802154_sync_queue(struct ieee802154_local *local) +{ + int ret; + + ieee802154_hold_queue(local); + ieee802154_disable_queue(local); + wait_event(local->phy->sync_txq, !atomic_read(&local->phy->ongoing_txs)); + ret = local->tx_result; + ieee802154_release_queue(local); + + return ret; +} + +int ieee802154_sync_and_hold_queue(struct ieee802154_local *local) +{ + int ret; + + ieee802154_hold_queue(local); + ret = ieee802154_sync_queue(local); + set_bit(WPAN_PHY_FLAG_STATE_QUEUE_STOPPED, &local->phy->flags); + + return ret; +} + +int ieee802154_mlme_op_pre(struct ieee802154_local *local) +{ + return ieee802154_sync_and_hold_queue(local); +} + +int ieee802154_mlme_tx_locked(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb) +{ + /* Avoid possible calls to ->ndo_stop() when we asynchronously perform + * MLME transmissions. + */ + ASSERT_RTNL(); + + /* Ensure the device was not stopped, otherwise error out */ + if (!local->open_count) + return -ENETDOWN; + + /* Warn if the ieee802154 core thinks MLME frames can be sent while the + * net interface expects this cannot happen. + */ + if (WARN_ON_ONCE(!netif_running(sdata->dev))) + return -ENETDOWN; + + ieee802154_tx(local, skb); + return ieee802154_sync_queue(local); +} + +int ieee802154_mlme_tx(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb) +{ + int ret; + + rtnl_lock(); + ret = ieee802154_mlme_tx_locked(local, sdata, skb); + rtnl_unlock(); + + return ret; +} + +void ieee802154_mlme_op_post(struct ieee802154_local *local) +{ + ieee802154_release_queue(local); +} + +int ieee802154_mlme_tx_one_locked(struct ieee802154_local *local, + struct ieee802154_sub_if_data *sdata, + struct sk_buff *skb) +{ + int ret; + + ieee802154_mlme_op_pre(local); + ret = ieee802154_mlme_tx_locked(local, sdata, skb); + ieee802154_mlme_op_post(local); + + return ret; +} + +static bool ieee802154_queue_is_stopped(struct ieee802154_local *local) +{ + return test_bit(WPAN_PHY_FLAG_STATE_QUEUE_STOPPED, &local->phy->flags); +} + +static netdev_tx_t +ieee802154_hot_tx(struct ieee802154_local *local, struct sk_buff *skb) +{ + /* Warn if the net interface tries to transmit frames while the + * ieee802154 core assumes the queue is stopped. + */ + WARN_ON_ONCE(ieee802154_queue_is_stopped(local)); + + return ieee802154_tx(local, skb); +} + +netdev_tx_t +ieee802154_monitor_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); + + skb->skb_iif = dev->ifindex; + + return ieee802154_hot_tx(sdata->local, skb); +} + +netdev_tx_t +ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); + int rc; + + /* TODO we should move it to wpan_dev_hard_header and dev_hard_header + * functions. The reason is wireshark will show a mac header which is + * with security fields but the payload is not encrypted. + */ + rc = mac802154_llsec_encrypt(&sdata->sec, skb); + if (rc) { + netdev_warn(dev, "encryption failed: %i\n", rc); + kfree_skb(skb); + return NETDEV_TX_OK; + } + + skb->skb_iif = dev->ifindex; + + return ieee802154_hot_tx(sdata->local, skb); +} -- cgit v1.3.1