refactor(bpf): Introduce route_decision struct#836
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jschwinger233 wants to merge 3 commits intodaeuniverse:mainfrom
Open
refactor(bpf): Introduce route_decision struct#836jschwinger233 wants to merge 3 commits intodaeuniverse:mainfrom
jschwinger233 wants to merge 3 commits intodaeuniverse:mainfrom
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Background
之前 route() 返回一个 s64 承载
outbound | mark << 8 | must << 40，不好读，不好扩展。为了实现 #818 必须在 route() 结果里带上 redirect_ifindex 和 redirect_dir，之前的 64 bits 无法扩展，这个 pr 作为预备工作引入了 route_decision 结构体方便之后扩展，无业务逻辑改动。（建议按照 commit review，有个调整缩进的改动让 diff 变得不堪入目，我单独扔到一个 patch）
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