Commit Graph

5 Commits

Author SHA1 Message Date
Jukka Rissanen 20aa77ce6f net: Network buffers could be lost when sending packets
When sending data to network, make sure to check the return
code from network driver. The driver should return these codes:
 0 : If packet could not be sent. In this case buf should
     not be released.
 1 : If the packet was sent successfully. In this case the buf
     should be released by either the send() or some other
     lower layer function.
 <0: If there is an error, the buf should not be released by
     send() function.

Fixed the relevant part in Contiki code so that the tcpip_output()
return correct value
  0 = packet was not sent, caller needs to free it
  1 = packet was sent, network driver will free the net_buf
      after sending it to medium

Change-Id: I4380d7747985fc057f5ef73ca97b76f6e9888a55
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2016-02-05 20:15:22 -05:00
Jukka Rissanen 4eb70872fc net: Fix the loopback driver function parameters
Wrong number of parameters in net_driver.send registration.

Change-Id: I39eda44f0dbc9a5a1d980da3a625ef36946aef19
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2016-02-05 20:14:31 -05:00
Ravi kumar Veeramally 56ccfb3785 net: 15.4: Add 802.15.4 driver and 802.15.4 loopback radio driver
Enable 802.15.4 driver that receives the IPv6 packet, does header
compression on it and writes it to the 15.4 stack Tx FIFO.
The 15.4 Tx fiber will pick up the header compressed IPv6
6LoWPAN packet and fragment it into suitable chunks ready
to be sent to the 15.4 hw driver. The 15.4 stack Rx fiber picks
15.4 frames from 15.4 Rx FIFO (which are fed by 15.4 driver)
and reassembles the all fragmented packets and uncompress the
header and writes to the IP Rx FIFO.

The 15.4 loopback radio driver receives the 15.4 frames and
put it back to 15.4 Rx Fifo.

Change-Id: I68d1c7ff6de0e8770616e574206c2091c69a28e6
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2016-02-05 20:14:30 -05:00
Patrik Flykt 231572a1c6 net: Set loopback address in the loopback driver
Set the loopback IPv6 address and an all-zero MAC address as the
loopback device really does not have a defined MAC address.

Clean up the code so that the loopback driver's IPv6 addresses are
not reused in other parts by mistake.

Change-Id: I07cc8bc5ad3a2ec5997bb313dd0ecaca4d9742f7
Signed-off-by: Patrik Flykt <patrik.flykt@linux.intel.com>
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2016-02-05 20:14:30 -05:00
Patrik Flykt e26167cd4a net: Add loopback driver
Change-Id: If8ee848ed8519719b4ec3ad2e74167e0558709ef
Signed-off-by: Patrik Flykt <patrik.flykt@linux.intel.com>
Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2016-02-05 20:14:29 -05:00