linux kernel - When will network stack will stop tx queue of netdev -


i see network stack stopping tx queue of netdev, not sure when , why causing.

on use cases, network stack call netif_stop_queue(). pointer great.

  2942 static inline void netif_stop_queue(struct net_device *dev)   2943 {   2944         netif_tx_stop_queue(netdev_get_tx_queue(dev, 0));   2945 }


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