[NET]: Document ->hard_start_xmit() locking in netdevices.txt
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/Documentation/networking/netdevices.txt b/Documentation/networking/netdevices.txt
index 1509f3a..3c0a5ba 100644
--- a/Documentation/networking/netdevices.txt
+++ b/Documentation/networking/netdevices.txt
@@ -51,6 +51,8 @@
set_multicast_list
Context: BHs disabled
Notes: netif_queue_stopped() is guaranteed false
+ Interrupts must be enabled when calling hard_start_xmit.
+ (Interrupts must also be enabled when enabling the BH handler.)
Return codes:
o NETDEV_TX_OK everything ok.
o NETDEV_TX_BUSY Cannot transmit packet, try later