Dynptr memset.v3 #9227
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Dynptr memset.v3 #9227
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Currently there is no straightforward way to fill dynptr memory with a value (most commonly zero). One can do it with bpf_dynptr_write(), but a temporary buffer is necessary for that. Implement bpf_dynptr_memset() - an analogue of memset() from libc. Signed-off-by: Ihor Solodrai <[email protected]>
Add tests to verify the behavior of bpf_dynptr_memset(): * normal memset 0 * normal memset non-0 * memset with an offset * memset in dynptr that was adjusted * error: size overflow * error: offset+size overflow * error: readonly dynptr * memset into non-linear xdp dynptr Signed-off-by: Ihor Solodrai <[email protected]>
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