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net: if: Clarify the documentation in net_if_send_data()

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Add description what happens if NET_DROP is returned from
L2 send function.

Change-Id: I371de725b710041bb26a141f9860c0062fb1ef5d
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
This commit is contained in:
Jukka Rissanen 2017-02-27 16:33:34 +02:00
commit 038664ac6f
1 changed files with 6 additions and 3 deletions
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9
subsys/net/ip/net_if.c
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@ -187,9 +187,12 @@ enum net_verdict net_if_send_data(struct net_if *iface, struct net_buf *buf)
done:
/* The L2 send() function can return
* NET_OK in which case packet was sent successfully.
* In that case we need to check if any user callbacks need
* to be called to mark a successful delivery.
* NET_OK in which case packet was sent successfully. In this case
* the net_context callback is called after successful delivery in
* net_if_tx_thread().
*
* NET_DROP in which case we call net_context callback that will
* give the status to user application.
*
* NET_CONTINUE in which case the sending of the packet is delayed.
* This can happen for example if we need to do IPv6 ND to figure