#include <trace/events/napi.h>
#include <trace/events/net.h>
#include <trace/events/skb.h>
-#include <linux/pci.h>
#include <linux/inetdevice.h>
#include <linux/cpu_rmap.h>
#include <linux/static_key.h>
#include <net/udp_tunnel.h>
#include <linux/net_namespace.h>
#include <linux/indirect_call_wrapper.h>
+#include <net/devlink.h>
#include "net-sysfs.h"
BUG_ON(!dev_net(dev));
net = dev_net(dev);
- if (dev->flags & IFF_UP)
+
+ /* Some auto-enslaved devices e.g. failover slaves are
+ * special, as userspace might rename the device after
+ * the interface had been brought up and running since
+ * the point kernel initiated auto-enslavement. Allow
+ * live name change even when these slave devices are
+ * up and running.
+ *
+ * Typically, users of these auto-enslaving devices
+ * don't actually care about slave name change, as
+ * they are supposed to operate on master interface
+ * directly.
+ */
+ if (dev->flags & IFF_UP &&
+ likely(!(dev->priv_flags & IFF_LIVE_RENAME_OK)))
return -EBUSY;
write_seqcount_begin(&devnet_rename_seq);
if (unlikely(test_bit(__QDISC_STATE_DEACTIVATED, &q->state))) {
__qdisc_drop(skb, &to_free);
rc = NET_XMIT_DROP;
+ } else if ((q->flags & TCQ_F_CAN_BYPASS) && q->empty &&
+ qdisc_run_begin(q)) {
+ qdisc_bstats_cpu_update(q, skb);
+
+ if (sch_direct_xmit(skb, q, dev, txq, NULL, true))
+ __qdisc_run(q);
+
+ qdisc_run_end(q);
+ rc = NET_XMIT_SUCCESS;
} else {
rc = q->enqueue(skb, q, &to_free) & NET_XMIT_MASK;
qdisc_run(q);
#define skb_update_prio(skb)
#endif
-DEFINE_PER_CPU(int, xmit_recursion);
-EXPORT_SYMBOL(xmit_recursion);
-
/**
* dev_loopback_xmit - loop back @skb
* @net: network namespace this loopback is happening in
}
u16 dev_pick_tx_zero(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
return 0;
}
EXPORT_SYMBOL(dev_pick_tx_zero);
u16 dev_pick_tx_cpu_id(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev,
- select_queue_fallback_t fallback)
+ struct net_device *sb_dev)
{
return (u16)raw_smp_processor_id() % dev->real_num_tx_queues;
}
EXPORT_SYMBOL(dev_pick_tx_cpu_id);
-static u16 __netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
- struct net_device *sb_dev)
+u16 netdev_pick_tx(struct net_device *dev, struct sk_buff *skb,
+ struct net_device *sb_dev)
{
struct sock *sk = skb->sk;
int queue_index = sk_tx_queue_get(sk);
return queue_index;
}
+EXPORT_SYMBOL(netdev_pick_tx);
-struct netdev_queue *netdev_pick_tx(struct net_device *dev,
- struct sk_buff *skb,
- struct net_device *sb_dev)
+struct netdev_queue *netdev_core_pick_tx(struct net_device *dev,
+ struct sk_buff *skb,
+ struct net_device *sb_dev)
{
int queue_index = 0;
const struct net_device_ops *ops = dev->netdev_ops;
if (ops->ndo_select_queue)
- queue_index = ops->ndo_select_queue(dev, skb, sb_dev,
- __netdev_pick_tx);
+ queue_index = ops->ndo_select_queue(dev, skb, sb_dev);
else
- queue_index = __netdev_pick_tx(dev, skb, sb_dev);
+ queue_index = netdev_pick_tx(dev, skb, sb_dev);
queue_index = netdev_cap_txqueue(dev, queue_index);
}
else
skb_dst_force(skb);
- txq = netdev_pick_tx(dev, skb, sb_dev);
+ txq = netdev_core_pick_tx(dev, skb, sb_dev);
q = rcu_dereference_bh(txq->qdisc);
trace_net_dev_queue(skb);
int cpu = smp_processor_id(); /* ok because BHs are off */
if (txq->xmit_lock_owner != cpu) {
- if (unlikely(__this_cpu_read(xmit_recursion) >
- XMIT_RECURSION_LIMIT))
+ if (dev_xmit_recursion())
goto recursion_alert;
skb = validate_xmit_skb(skb, dev, &again);
HARD_TX_LOCK(dev, txq, cpu);
if (!netif_xmit_stopped(txq)) {
- __this_cpu_inc(xmit_recursion);
+ dev_xmit_recursion_inc();
skb = dev_hard_start_xmit(skb, dev, txq, &rc);
- __this_cpu_dec(xmit_recursion);
+ dev_xmit_recursion_dec();
if (dev_xmit_complete(rc)) {
HARD_TX_UNLOCK(dev, txq);
goto out;
u32 rps_cpu_mask __read_mostly;
EXPORT_SYMBOL(rps_cpu_mask);
-struct static_key rps_needed __read_mostly;
+struct static_key_false rps_needed __read_mostly;
EXPORT_SYMBOL(rps_needed);
-struct static_key rfs_needed __read_mostly;
+struct static_key_false rfs_needed __read_mostly;
EXPORT_SYMBOL(rfs_needed);
static struct rps_dev_flow *
bool free_skb = true;
int cpu, rc;
- txq = netdev_pick_tx(dev, skb, NULL);
+ txq = netdev_core_pick_tx(dev, skb, NULL);
cpu = smp_processor_id();
HARD_TX_LOCK(dev, txq, cpu);
if (!netif_xmit_stopped(txq)) {
}
#ifdef CONFIG_RPS
- if (static_key_false(&rps_needed)) {
+ if (static_branch_unlikely(&rps_needed)) {
struct rps_dev_flow voidflow, *rflow = &voidflow;
int cpu;
if (pt_prev->list_func != NULL)
pt_prev->list_func(head, pt_prev, orig_dev);
else
- list_for_each_entry_safe(skb, next, head, list)
+ list_for_each_entry_safe(skb, next, head, list) {
+ skb_list_del_init(skb);
pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
+ }
}
static void __netif_receive_skb_list_core(struct list_head *head, bool pfmemalloc)
rcu_read_lock();
#ifdef CONFIG_RPS
- if (static_key_false(&rps_needed)) {
+ if (static_branch_unlikely(&rps_needed)) {
struct rps_dev_flow voidflow, *rflow = &voidflow;
int cpu = get_rps_cpu(skb->dev, skb, &rflow);
rcu_read_lock();
#ifdef CONFIG_RPS
- if (static_key_false(&rps_needed)) {
+ if (static_branch_unlikely(&rps_needed)) {
list_for_each_entry_safe(skb, next, head, list) {
struct rps_dev_flow voidflow, *rflow = &voidflow;
int cpu = get_rps_cpu(skb->dev, skb, &rflow);
char *name, size_t len)
{
const struct net_device_ops *ops = dev->netdev_ops;
+ int err;
- if (!ops->ndo_get_phys_port_name)
- return -EOPNOTSUPP;
- return ops->ndo_get_phys_port_name(dev, name, len);
+ if (ops->ndo_get_phys_port_name) {
+ err = ops->ndo_get_phys_port_name(dev, name, len);
+ if (err != -EOPNOTSUPP)
+ return err;
+ }
+ return devlink_compat_phys_port_name_get(dev, name, len);
}
EXPORT_SYMBOL(dev_get_phys_port_name);
struct netdev_phys_item_id first = { };
struct net_device *lower_dev;
struct list_head *iter;
- int err = -EOPNOTSUPP;
+ int err;
- if (ops->ndo_get_port_parent_id)
- return ops->ndo_get_port_parent_id(dev, ppid);
+ if (ops->ndo_get_port_parent_id) {
+ err = ops->ndo_get_port_parent_id(dev, ppid);
+ if (err != -EOPNOTSUPP)
+ return err;
+ }
- if (!recurse)
+ err = devlink_compat_switch_id_get(dev, ppid);
+ if (!err || err != -EOPNOTSUPP)
return err;
+ if (!recurse)
+ return -EOPNOTSUPP;
+
netdev_for_each_lower_dev(dev, lower_dev, iter) {
err = dev_get_port_parent_id(lower_dev, ppid, recurse);
if (err)
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