net: Add set/getsockopt options compatible with iptables. #7989
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Signed-off-by: Zhe Weng <[email protected]>
xiaoxiang781216
approved these changes
Dec 28, 2022
This was referenced Dec 29, 2022
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Summary
Implemented our own
IPT_SO_SET_REPLACEoption for setsockopt andIPT_SO_GET_INFO/IPT_SO_GET_ENTRIESoptions for getsockopt, which are compatible with iptables.Currently used for NAT.
Impact
Add a method for user space to control kernel NAT/firewall(maybe).
Testing
Manually tested with our implementation of iptables (compatible version) in apps (apache/nuttx-apps#1479).