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[NET]: Document ->hard_start_xmit() locking in netdevices.txt 

Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Ben Greear 2005-04-24 20:13:19 -07:00 committed by David S. Miller
parent af191367a7
commit aa77d26961
1 changed files with 2 additions and 0 deletions
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Documentation/networking/netdevices.txt
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@ -51,6 +51,8 @@ dev->hard_start_xmit:
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