net: netdevice.h: add a description for napi_defer_hard_irqs

Changeset 6f8b12d661d0 ("net: napi: add hard irqs deferral feature")
added a new element at struct net_device.

Add a description for it, based on what's described at the changeset
which added such feature.

Fixes: 6f8b12d661d0 ("net: napi: add hard irqs deferral feature")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/807a3840e7bc1562adefadb0535c9f47e6ab52e0.1592895969.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 6fc613ed8eae7743ce7c9093aa966f16b812b35e..f3ca52958a17e7427261c20428674fedb4b1d8f0 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1742,6 +1742,8 @@ enum netdev_priv_flags {
  *     @real_num_rx_queues:    Number of RX queues currently active in device
  *     @xdp_prog:              XDP sockets filter program pointer
  *     @gro_flush_timeout:     timeout for GRO layer in NAPI
+ *     @napi_defer_hard_irqs:  If not zero, provides a counter that would
+ *                             allow to avoid NIC hard IRQ, on busy queues.
  *
  *     @rx_handler:            handler for received packets
  *     @rx_handler_data:       XXX: need comments on this one