0038f57c90
fragmented ppp frames while reading from pty. From Sergey's mail: ===== xl2tpd could not correctly handle fragmented ppp frame while read it from pty if one of consequent read operation return an error. That's happening because xl2tpd too often cleans the buffer and assumes that each read frame operation is performed for new frame, since xl2tpd uses single buffer for pty and for socket read operations. The attached patch moves all pty related buffers into _call_ context and corrects calculation of buffer position, what fixes issue with handling of fragmented frames. Now we can use MTU > 1000. I tested these changes with load (L2TP tunnel without IPSec) and all seems work normally. No more "Protocol-Reject" frames. ===== Performance is still poor (Sergey was seeing ~2Mb/s, I am seeing less despite low cpu use) but the tunnel now seems reliable. |
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