net: introduce NETDEV_CHANGE_TX_QUEUE_LEN
This patch introduces a new event - NETDEV_CHANGE_TX_QUEUE_LEN, this will be triggered when tx_queue_len. It could be used by net device who want to do some processing at that time. An example is tun who may want to resize tx array when tx_queue_len is changed. Cc: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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David S. Miller

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commit
08294a26e1
@@ -2237,6 +2237,7 @@ struct netdev_lag_lower_state_info {
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#define NETDEV_PRECHANGEUPPER 0x001A
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#define NETDEV_CHANGELOWERSTATE 0x001B
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#define NETDEV_UDP_TUNNEL_PUSH_INFO 0x001C
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#define NETDEV_CHANGE_TX_QUEUE_LEN 0x001E
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int register_netdevice_notifier(struct notifier_block *nb);
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int unregister_netdevice_notifier(struct notifier_block *nb);
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