Commit Graph

9 Commits

Author SHA1 Message Date
Gregory Nutt
c4bd6f52b5 Networking: The are issues with the TCP write-ahead buffering if CONFIG_NET_NOINTS is enabled: There is a possibility of deadlocks in certain timing conditions. I have not seen this with the Tiva driver that I have been users but other people claim to see the issue on other platforms. Certainly it is a logic error: The network should never wait for TCP read-ahead buffering space to be available. It should drop the packets immediately.
This was fixed by duplicating most of the IOB interfaces:  The versions that waited are still present (like iob_alloc()), but now there are non-waiting verisons of the same interfaces (like iob_tryalloc()).  The TCP read-ahead logic now uses only these non-waiting interfaces.
2015-01-27 21:23:42 -06:00
Gregory Nutt
fabcb6d37e TCP Read-Ahead: Convert to use I/O buffer chains 2014-06-24 15:38:00 -06:00
Gregory Nutt
e9a588c398 Add throttle support to the I/O buffer logic 2014-06-24 11:53:19 -06:00
Gregory Nutt
718d9993e6 TCP write buffering: This corrects some of the basic transfer problems. But there are more 2014-06-23 17:31:30 -06:00
Gregory Nutt
d642616c5b TCP write buffering: Fix an error in the trim logic 2014-06-22 16:25:26 -06:00
Gregory Nutt
a304a73608 IOB: Add queue handling interfaces; improve lists 2014-06-06 09:35:31 -06:00
Gregory Nutt
3881bf6b5f IOB: Remove unimplemented VLAN stuff; add unit test and fixes to pass unit test 2014-06-05 10:43:20 -06:00
Gregory Nutt
67d5e8d154 NET: Improvied I/O buffer logic 2014-06-04 09:03:11 -06:00
Gregory Nutt
d10c3923a2 Add iob_copyin() 2014-06-03 14:28:16 -06:00