Support Parsing of BTF Maps #140
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Parsing works fine, but relocations do not. marking as draft until this is resolved. |
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alessandrod
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Jul 11, 2022
This commit allows for BTF maps in the .maps ELF section to be parsed. It reads the necessary information from the BTF section of the ELF file. While the btf_ids of Keys and Values types are stored, they are not (yet) used. When creating a BTF map, we pass the btf_key_type_id and btf_value_type_id. Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
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This PR allows for BTF maps in the .maps ELF section to be parsed.
It reads the necessary information from the BTF section of the ELF file.
It provides the BTF IDs to the
bpf_map_createcall.This allows for
bpftoolto pretty print maps! For example:$ sudo bpftool map dump id 224 [{ "key": 0, "value": { "rx_packets": 0 } },{ "key": 1, "value": { "rx_packets": 0 } },{ "key": 2, "value": { "rx_packets": 148 } },{ "key": 3, "value": { "rx_packets": 0 } },{ "key": 4, "value": { "rx_packets": 0 } } ]