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Update comments.

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This commit is contained in:
Gregory Nutt 2017-07-17 07:14:12 -06:00
parent d9a2a3c3f1
commit 799b2d5671
4 changed files with 24 additions and 17 deletions
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9
net/devif/ipv4_input.c
View File

@ -309,10 +309,11 @@ nullreturn:
* Description:
*
* Returned Value:
* OK The packet was processed (or dropped) and can be discarded.
* ERROR There is a matching connection, but could not dispatch the packet
* yet. Currently useful for UDP when a packet arrives before a recv
* call is in place.
* OK - The packet was processed (or dropped) and can be discarded.
* ERROR - Hold the packet and try again later. There is a listening
* socket but no receive in place to catch the packet yet. The
* device's d_len will be set to zero in this case as there is
* no outgoing data.
*
****************************************************************************/

7
net/devif/ipv6_input.c
View File

@ -238,9 +238,10 @@ static bool check_destipaddr(FAR struct net_driver_s *dev,
* the IPv6 packet.
* Returned Value:
* OK - The packet was processed (or dropped) and can be discarded.
* ERROR - There is a matching connection, but could not dispatch the
* packet yet. Currently useful for UDP when a packet arrives
* before a recv call is in place.
* ERROR - Hold the packet and try again later. There is a listening
* socket but no receive in place to catch the packet yet. The
* device's d_len will be set to zero in this case as there is
* no outgoing data.
*
* If this function returns to the network driver with dev->d_len > 0,
* that is an indication to the driver that there is an outgoing response

15
net/pkt/pkt_input.c
View File

@ -74,9 +74,10 @@
* dev - The device driver structure containing the received packet
*
* Return:
* OK The packet has been processed and can be deleted
* ERROR Hold the packet and try again later. There is a listening socket
* but no recv in place to catch the packet yet.
* OK The packet has been processed and can be deleted
* ERROR There is a matching connection, but could not dispatch the packet
* yet. Currently useful for UDP when a packet arrives before a recv
* call is in place.
*
* Assumptions:
* Called from the interrupt level or with interrupts disabled.
@ -110,10 +111,14 @@ int pkt_input(struct net_driver_s *dev)
if ((flags & PKT_NEWDATA) != 0)
{
/* No.. the packet was not processed now. Return ERROR so
* that the driver may retry again later.
* that the driver may retry again later. We still need to
* set d_len to zero so that the driver is aware that there
* is nothing to be sent.
*/
ret = ERROR;
nwarn("WARNING: Packet not processed\n");
//dev->d_len = 0; REVISIT
ret = ERROR;
}
}
else

10
net/udp/udp_input.c
View File

@ -72,11 +72,11 @@
* iplen - Length of the IP and UDP headers
*
* Return:
* OK The packet has been processed and can be deleted
* ERROR Hold the packet and try again later. There is a listening socket
* but no receive in place to catch the packet yet. The device's
* d_len will be set to zero in this case as there is no outgoing
* data.
* OK - The packet has been processed and can be deleted
* ERROR - Hold the packet and try again later. There is a listening
* socket but no receive in place to catch the packet yet. The
* device's d_len will be set to zero in this case as there is
* no outgoing data.
*
* Assumptions:
* Called from the interrupt level or with interrupts disabled.