Revision 65f0d2414b7079556fbbcc070b3d1c9f9587606d authored by Linus Torvalds on 13 January 2021, 19:55:14 UTC, committed by Linus Torvalds on 13 January 2021, 19:55:14 UTC
Pull sound fixes from Takashi Iwai: "Here are some piled fixes, hopefully the last big one for 5.11. All changes are device-specific small fixes, and majority of commits are for ASoC while USB-audio got a bit large changes for addressing the regression for devices with quirks" * tag 'sound-5.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (31 commits) ALSA: hda/hdmi - enable runtime pm for CI AMD display audio ALSA: firewire-tascam: Fix integer overflow in midi_port_work() ALSA: fireface: Fix integer overflow in transmit_midi_msg() ALSA: hda/tegra: fix tegra-hda on tegra30 soc clk: tegra30: Add hda clock default rates to clock driver ALSA: doc: Fix reference to mixart.rst ALSA: usb-audio: Fix implicit feedback sync setup for Pioneer devices ALSA: usb-audio: Annotate the endpoint index in audioformat ALSA: usb-audio: Avoid unnecessary interface re-setup ALSA: usb-audio: Choose audioformat of a counter-part substream ALSA: usb-audio: Fix the missing endpoints creations for quirks ALSA: hda/realtek: fix right sounds and mute/micmute LEDs for HP machines ASoC: AMD Renoir - add DMI entry for Lenovo ThinkPad X395 ASoC: amd: Replacing MSI with Legacy IRQ model ASoC: AMD Renoir - add DMI entry for Lenovo ThinkPad E14 Gen 2 ASoC: meson: axg-tdm-interface: fix loopback ASoC: meson: axg-tdmin: fix axg skew offset ASoC: max98373: don't access volatile registers in bias level off ASoC: rt711: mutex between calibration and power state changes ASoC: Intel: haswell: Add missing pm_ops ...
gro_cells.c
// SPDX-License-Identifier: GPL-2.0
#include <linux/skbuff.h>
#include <linux/slab.h>
#include <linux/netdevice.h>
#include <net/gro_cells.h>
struct gro_cell {
struct sk_buff_head napi_skbs;
struct napi_struct napi;
};
int gro_cells_receive(struct gro_cells *gcells, struct sk_buff *skb)
{
struct net_device *dev = skb->dev;
struct gro_cell *cell;
int res;
rcu_read_lock();
if (unlikely(!(dev->flags & IFF_UP)))
goto drop;
if (!gcells->cells || skb_cloned(skb) || netif_elide_gro(dev)) {
res = netif_rx(skb);
goto unlock;
}
cell = this_cpu_ptr(gcells->cells);
if (skb_queue_len(&cell->napi_skbs) > netdev_max_backlog) {
drop:
atomic_long_inc(&dev->rx_dropped);
kfree_skb(skb);
res = NET_RX_DROP;
goto unlock;
}
__skb_queue_tail(&cell->napi_skbs, skb);
if (skb_queue_len(&cell->napi_skbs) == 1)
napi_schedule(&cell->napi);
res = NET_RX_SUCCESS;
unlock:
rcu_read_unlock();
return res;
}
EXPORT_SYMBOL(gro_cells_receive);
/* called under BH context */
static int gro_cell_poll(struct napi_struct *napi, int budget)
{
struct gro_cell *cell = container_of(napi, struct gro_cell, napi);
struct sk_buff *skb;
int work_done = 0;
while (work_done < budget) {
skb = __skb_dequeue(&cell->napi_skbs);
if (!skb)
break;
napi_gro_receive(napi, skb);
work_done++;
}
if (work_done < budget)
napi_complete_done(napi, work_done);
return work_done;
}
int gro_cells_init(struct gro_cells *gcells, struct net_device *dev)
{
int i;
gcells->cells = alloc_percpu(struct gro_cell);
if (!gcells->cells)
return -ENOMEM;
for_each_possible_cpu(i) {
struct gro_cell *cell = per_cpu_ptr(gcells->cells, i);
__skb_queue_head_init(&cell->napi_skbs);
set_bit(NAPI_STATE_NO_BUSY_POLL, &cell->napi.state);
netif_napi_add(dev, &cell->napi, gro_cell_poll,
NAPI_POLL_WEIGHT);
napi_enable(&cell->napi);
}
return 0;
}
EXPORT_SYMBOL(gro_cells_init);
void gro_cells_destroy(struct gro_cells *gcells)
{
int i;
if (!gcells->cells)
return;
for_each_possible_cpu(i) {
struct gro_cell *cell = per_cpu_ptr(gcells->cells, i);
napi_disable(&cell->napi);
__netif_napi_del(&cell->napi);
__skb_queue_purge(&cell->napi_skbs);
}
/* This barrier is needed because netpoll could access dev->napi_list
* under rcu protection.
*/
synchronize_net();
free_percpu(gcells->cells);
gcells->cells = NULL;
}
EXPORT_SYMBOL(gro_cells_destroy);
Computing file changes ...