feature: More public APIs for XdpContext to grow/shrink packets
#948
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gabhijit
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May 17, 2024
Added new public API for the `XdpContext`: - `adjust_head` : To grow the packet buffer at the beginning - `adjist_tail` : To grow the packet buffer at the end - `adjust_meta` : To grow metadata area These API are handy for packet processing when additional headers etc. are to be pushed to the packet. Also added these APIs using `cargo xtask public-api --bless` Refs: aya-rs#948
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Currently the APIs available for
XdpContextsupport mainly accessing thedataanddata_end. It would be handy to have the APIs that allow to grow or shrink the packet as are provided bybpf_xdp_xdp_adjust_{head|tail|meta}.Such API will be useful during actual packet processing, whenever additional headers are to be pushed to the packet etc.
Will submit a draft PR for this.
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