Add support to record IPv4 encapsulated packets #35
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@slankdev Please check it. cc @proelbtn @ninilosso |
proelbtn
reviewed
Jun 23, 2023
| if (inner_ih->ihl < 5) | ||
| return TC_ACT_SHOT; |
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If the IP header has options, inner_ih->ihl will be greater than 5, right? If you add the IP header (20) length in process_ipv4_tcp, you may need to implement it like the following?
Suggested change
| if (inner_ih->ihl < 5) | |
| return TC_ACT_SHOT; | |
| if (inner_ih->ihl != 5) | |
| return TC_ACT_SHOT; |
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or you need to calculate correct offset with ih->ihl.
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Actually this tool supports IP option (ihl > 5) but current this PR doesn't calculate offset of inner IP with correct ihl. So let me fix it.
proelbtn
approved these changes
Jun 25, 2023
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This PR adds support to collect flow logs for IPv4 encapsulated packets.