tcprewrite: handle malformed and unsupported packets as soft errors#613
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fklassen merged 1 commit intoappneta:masterfrom Mar 15, 2021
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Instead of hard failing on malformed packets, treat them as soft errors and skip them. This concerns both malformed packets (eg. too short to contain the expected protocol headers) and unsupported packets (eg. fragmented IPv6 packets). This is a partial fix for appneta#611 Signed-off-by: Gabriel Ganne <gabriel.ganne@gmail.com>
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I had a closer look, and it seems worth the risk. This is great to have, enabling edits on short caplen captures. I suspect that we may see some bugs come out of this at some point, but for now I cannot find any. Thanks again @GabrielGanne for a great contribution. |
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Hi,
This is in response to #611
The ticket issue is caused by the packet being rewritten to be
unsupported (fragmented IPv6 packet). The issue would be the same
for malformed packets however.
The current behavior is to fail quite brutally by stopping all processing
right away. I propose to just skip those packets instead.
Best regards,