mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-01 08:36:43 +07:00
b26d344c6b
Conflicts: drivers/net/caif/caif_hsi.c drivers/net/usb/qmi_wwan.c The qmi_wwan merge was trivial. The caif_hsi.c, on the other hand, was not. It's a conflict between1c385f1fdf("caif-hsi: Replace platform device with ops structure.") in the net-next tree and commit39abbaef19("caif-hsi: Postpone init of HIS until open()") in the net tree. I did my best with that one and will ask Sjur to check it out. Signed-off-by: David S. Miller <davem@davemloft.net>
120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/*
|
|
* Copyright 2007-2012 Siemens AG
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Written by:
|
|
* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
|
|
* Sergey Lapin <slapin@ossfans.org>
|
|
* Maxim Gorbachyov <maxim.gorbachev@siemens.com>
|
|
* Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
|
|
*/
|
|
|
|
#include <linux/netdevice.h>
|
|
#include <linux/if_arp.h>
|
|
#include <linux/crc-ccitt.h>
|
|
|
|
#include <net/mac802154.h>
|
|
#include <net/wpan-phy.h>
|
|
|
|
#include "mac802154.h"
|
|
|
|
/* IEEE 802.15.4 transceivers can sleep during the xmit session, so process
|
|
* packets through the workqueue.
|
|
*/
|
|
struct xmit_work {
|
|
struct sk_buff *skb;
|
|
struct work_struct work;
|
|
struct mac802154_priv *priv;
|
|
u8 chan;
|
|
u8 page;
|
|
u8 xmit_attempts;
|
|
};
|
|
|
|
static void mac802154_xmit_worker(struct work_struct *work)
|
|
{
|
|
struct xmit_work *xw = container_of(work, struct xmit_work, work);
|
|
int res;
|
|
|
|
mutex_lock(&xw->priv->phy->pib_lock);
|
|
if (xw->priv->phy->current_channel != xw->chan ||
|
|
xw->priv->phy->current_page != xw->page) {
|
|
res = xw->priv->ops->set_channel(&xw->priv->hw,
|
|
xw->page,
|
|
xw->chan);
|
|
if (res) {
|
|
pr_debug("set_channel failed\n");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
res = xw->priv->ops->xmit(&xw->priv->hw, xw->skb);
|
|
|
|
out:
|
|
mutex_unlock(&xw->priv->phy->pib_lock);
|
|
|
|
if (res) {
|
|
if (xw->xmit_attempts++ < MAC802154_MAX_XMIT_ATTEMPTS) {
|
|
queue_work(xw->priv->dev_workqueue, &xw->work);
|
|
return;
|
|
} else
|
|
pr_debug("transmission failed for %d times",
|
|
MAC802154_MAX_XMIT_ATTEMPTS);
|
|
}
|
|
|
|
dev_kfree_skb(xw->skb);
|
|
|
|
kfree(xw);
|
|
}
|
|
|
|
netdev_tx_t mac802154_tx(struct mac802154_priv *priv, struct sk_buff *skb,
|
|
u8 page, u8 chan)
|
|
{
|
|
struct xmit_work *work;
|
|
|
|
if (!(priv->phy->channels_supported[page] & (1 << chan))) {
|
|
WARN_ON(1);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
mac802154_monitors_rx(mac802154_to_priv(&priv->hw), skb);
|
|
|
|
if (!(priv->hw.flags & IEEE802154_HW_OMIT_CKSUM)) {
|
|
u16 crc = crc_ccitt(0, skb->data, skb->len);
|
|
u8 *data = skb_put(skb, 2);
|
|
data[0] = crc & 0xff;
|
|
data[1] = crc >> 8;
|
|
}
|
|
|
|
if (skb_cow_head(skb, priv->hw.extra_tx_headroom)) {
|
|
dev_kfree_skb(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
work = kzalloc(sizeof(struct xmit_work), GFP_ATOMIC);
|
|
if (!work)
|
|
return NETDEV_TX_BUSY;
|
|
|
|
INIT_WORK(&work->work, mac802154_xmit_worker);
|
|
work->skb = skb;
|
|
work->priv = priv;
|
|
work->page = page;
|
|
work->chan = chan;
|
|
work->xmit_attempts = 0;
|
|
|
|
queue_work(priv->dev_workqueue, &work->work);
|
|
|
|
return NETDEV_TX_OK;
|
|
}
|