tcp_input: update tx_unack before reorder_ofosegs #10459
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After the sack is enabled and the ofosegs has gap, tcp cannot update the tx_unacked, so the peer received packets are retransmitted after the timer timeout. So update tx_unacked first. Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
anchao
approved these changes
Sep 1, 2023
pkarashchenko
approved these changes
Sep 1, 2023
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Summary
If the sack is enabled and the ofosegs has gap, after the received out of order packets are inserted into ofosegs and early return, so tcp cannot update the tx_unacked, peer received packets will retransmitted after the tcp_timer timeout.
So update tx_unacked first.
Impact
Testing
Cortex-M33