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Support dynptr key for hash map#4919

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kernel-patches-daemon-bpf-rc[bot] wants to merge 20 commits intobpf-next_basekernel-patches/bpf-rc:bpf-next_basefrom series/896601=>bpf-nextkernel-patches/bpf-rc:series/896601=>bpf-nextCopy head branch name to clipboard

+2,946-194

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Commits on Feb 3, 2025

• bpf: Add two helpers to facilitate the parsing of bpf_dynptr

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• bpf: Parse bpf_dynptr in map key

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• bpf: Factor out get_map_btf() helper

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• bpf: Move the initialization of btf before ->map_alloc_check

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• bpf: Introduce an internal map flag BPF_INT_F_DYNPTR_IN_KEY

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• bpf: Set BPF_INT_F_DYNPTR_IN_KEY conditionally

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• bpf: Use map_extra to indicate the max data size of dynptrs in map key

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• bpf: Split check_stack_range_initialized() into small functions

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• bpf: Support map key with dynptr in verifier

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• bpf: Introduce bpf_dynptr_user

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• bpf: Handle bpf_dynptr_user in bpf syscall when it is used as input

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• bpf: Handle bpf_dynptr_user in bpf syscall when it is used as output

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• bpf: Support basic operations for dynptr key in hash map

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• bpf: Export bpf_dynptr_set_size

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• bpf: Support get_next_key operation for dynptr key in hash map

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• bpf: Disable unsupported operations for map with dynptr key

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• bpf: Enable BPF_INT_F_DYNPTR_IN_KEY for hash map

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• selftests/bpf: Add bpf_dynptr_user_init() helper

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• selftests/bpf: Add test cases for hash map with dynptr key

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• selftests/bpf: Add benchmark for dynptr key support in hash map

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