Bug Fixes in this Version


The table below lists the bugs that have been fixed in the current XLIO version.

Internal Ref. Number



Description: When transferring large data initially with limited send space, XLIO waits for ACKs to enlarge the Tx window. However, if the queued data does not fit the expanded TCP window, XLIO may not send it. This problem remains until a new send call is made.

Keywords: TCP window, Stuck connection

Discovered in Version: 3.20.1-1

Fixed in Version: 3.21.2


Description: Calling poll() with events=0 on an offloaded TCP socket can return POLLHUP immediately

Keywords: poll, POLLHUP

Discovered in Version: 3.10.5

Fixed in Version: 3.21.2

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