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Diffstat (limited to 'net/core/dev.c')
-rw-r--r--net/core/dev.c31
1 files changed, 29 insertions, 2 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index ba853e878007..4a77ebda4fb1 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3925,6 +3925,25 @@ sch_handle_egress(struct sk_buff *skb, int *ret, struct net_device *dev)
return skb;
}
+
+static struct netdev_queue *
+netdev_tx_queue_mapping(struct net_device *dev, struct sk_buff *skb)
+{
+ int qm = skb_get_queue_mapping(skb);
+
+ return netdev_get_tx_queue(dev, netdev_cap_txqueue(dev, qm));
+}
+
+static bool netdev_xmit_txqueue_skipped(void)
+{
+ return __this_cpu_read(softnet_data.xmit.skip_txqueue);
+}
+
+void netdev_xmit_skip_txqueue(bool skip)
+{
+ __this_cpu_write(softnet_data.xmit.skip_txqueue, skip);
+}
+EXPORT_SYMBOL_GPL(netdev_xmit_skip_txqueue);
#endif /* CONFIG_NET_EGRESS */
#ifdef CONFIG_XPS
@@ -4095,7 +4114,7 @@ struct netdev_queue *netdev_core_pick_tx(struct net_device *dev,
static int __dev_queue_xmit(struct sk_buff *skb, struct net_device *sb_dev)
{
struct net_device *dev = skb->dev;
- struct netdev_queue *txq;
+ struct netdev_queue *txq = NULL;
struct Qdisc *q;
int rc = -ENOMEM;
bool again = false;
@@ -4123,11 +4142,17 @@ static int __dev_queue_xmit(struct sk_buff *skb, struct net_device *sb_dev)
if (!skb)
goto out;
}
+
+ netdev_xmit_skip_txqueue(false);
+
nf_skip_egress(skb, true);
skb = sch_handle_egress(skb, &rc, dev);
if (!skb)
goto out;
nf_skip_egress(skb, false);
+
+ if (netdev_xmit_txqueue_skipped())
+ txq = netdev_tx_queue_mapping(dev, skb);
}
#endif
/* If device/qdisc don't need skb->dst, release it right now while
@@ -4138,7 +4163,9 @@ static int __dev_queue_xmit(struct sk_buff *skb, struct net_device *sb_dev)
else
skb_dst_force(skb);
- txq = netdev_core_pick_tx(dev, skb, sb_dev);
+ if (!txq)
+ txq = netdev_core_pick_tx(dev, skb, sb_dev);
+
q = rcu_dereference_bh(txq->qdisc);
trace_net_dev_queue(skb);