--- zzzz-none-000/linux-5.4.213/net/core/net-sysfs.c 2022-09-15 10:04:56.000000000 +0000 +++ miami-7690-761/linux-5.4.213/net/core/net-sysfs.c 2024-05-29 11:20:02.000000000 +0000 @@ -470,6 +470,52 @@ } NETDEVICE_SHOW_RW(proto_down, fmt_dec); +static int change_napi_threaded(struct net_device *dev, unsigned long val) +{ + struct napi_struct *napi; + + if (list_empty(&dev->napi_list)) + return -EOPNOTSUPP; + + list_for_each_entry(napi, &dev->napi_list, dev_list) { + if (val) + set_bit(NAPI_STATE_THREADED, &napi->state); + else + clear_bit(NAPI_STATE_THREADED, &napi->state); + } + + return 0; +} + +static ssize_t napi_threaded_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + return netdev_store(dev, attr, buf, len, change_napi_threaded); +} + +static ssize_t napi_threaded_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct net_device *netdev = to_net_dev(dev); + struct napi_struct *napi; + bool enabled = false; + + if (!rtnl_trylock()) + return restart_syscall(); + + list_for_each_entry(napi, &netdev->napi_list, dev_list) { + if (test_bit(NAPI_STATE_THREADED, &napi->state)) + enabled = true; + } + + rtnl_unlock(); + + return sprintf(buf, fmt_dec, enabled); +} +static DEVICE_ATTR_RW(napi_threaded); + static ssize_t phys_port_id_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -581,6 +627,7 @@ &dev_attr_flags.attr, &dev_attr_tx_queue_len.attr, &dev_attr_gro_flush_timeout.attr, + &dev_attr_napi_threaded.attr, &dev_attr_phys_port_id.attr, &dev_attr_phys_port_name.attr, &dev_attr_phys_switch_id.attr,