ITPUB
Jul 19, 2016 · Backend Development
Why Does the RTL8139 Driver Miss the First TCP SYN? A Deep Dive into ISR Handling
A developer discovers that clearing the entire ISR register in the RTL8139 driver masks a pending Rx interrupt, causing the first TCP SYN packet to be lost, and resolves the issue by clearing only the TxOK bit.
ISRLinux kernelRTL8139
0 likes · 6 min read