FreeBSD src
0d60e88b41
This and the follow-up routing-related changes target to remove or reduce `struct rt_addrinfo` usage and use recently-landed nhop(9) KPI instead. Traditionally `rt_addrinfo` structure has been used to propagate all necessary information between the protocol/rtsock and a routing layer. Many functions inside routing subsystem uses it internally. However, using this structure became somewhat complicated, as there are too many ways of specifying a single state and verifying data consistency is hard. For example, arerouting flgs consistent with mask/gateway sockaddr pointers? Is mask really a host mask? Are sockaddr "valid" (e.g. properly zeroed, masked, have proper length)? Are they mutable? Is the suggested interface specified by the interface index embedded into the sockadd_dl gateway, or passed as RTAX_IFP parameter, or directly provided by rti_ifp or it needs to be derived from the ifa? These (and other similar) questions have to be considered every time when a function has `rt_addrinfo` pointer as an argument. The new approach is to bring more control back to the protocols and construct the desired routing objects themselves - in the end, it's the protocol/subsystem who knows the desired outcome. This specific diff changes the following: * add explicit basic low-level radix operations: add_route() (renamed from add_route_nhop()) delete_route() (factored from change_route_nhop()) change_route() (renamed from change_route_nhop) * remove "info" parameter from change_route_conditional() as a part of reducing rt_addrinfo usage in the internal KPIs * add lookup_prefix_rt() wrapper for doing re-lookups after RIB lock/unlock Differential Revision: https://reviews.freebsd.org/D36070 MFC after: 2 weeks |
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| .cirrus-ci | ||
| .github | ||
| bin | ||
| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| stand | ||
| sys | ||
| targets | ||
| tests | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| .arcconfig | ||
| .arclint | ||
| .cirrus.yml | ||
| .clang-format | ||
| .gitattributes | ||
| .gitignore | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.libcompat | ||
| Makefile.sys.inc | ||
| ObsoleteFiles.inc | ||
| README.md | ||
| RELNOTES | ||
| UPDATING | ||
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|---|---|
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| cddl | Various commands and libraries under the Common Development and Distribution License. |
| contrib | Packages contributed by 3rd parties. |
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sys/arch/conf |
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