[kronosnet/kronosnet] decf2d: [RX] handle short write to the application properly

Branch: refs/heads/netload-fixes Home: https://github.com/kronosnet/kronosnet Commit: decf2dfdb25f5ff01faf0e4ac67fd31fbe0674cb https://github.com/kronosnet/kronosnet/commit/decf2dfdb25f5ff01faf0e4ac67fd… Author: Fabio M. Di Nitto <fdinitto(a)redhat.com> Date: 2019-10-19 (Sat, 19 Oct 2019) Changed paths: M libknet/threads_rx.c Log Message: ----------- [RX] handle short write to the application properly this change affects only applications that are not using knet generated socketpairs to deliver/receive data to/from knet. If an application uses a fd that is not SOCK_SEQPACKET (basically streaming), we have to handle short writes accordingly, and knet will continue delivering as long as there is progress. The application is responsible to verify that the data packet is complete as the delivery is not guaranteed to be complete. The application can either embed the size of the packet in their data structure or use the socket error notification callback that will be invoked in case of errors or 0 data delivery. Signed-off-by: Fabio M. Di Nitto <fdinitto(a)redhat.com>