On Fri, 27 Oct 2023 00:29:29 +0100 Vadim Fedorenko wrote: > > Does anything prevent them from being used simultaneously > > by difference CPUs? > > The algorithm configuration and the key can be used by different CPUs > simultaneously Makes sense, got confused ctx vs req. You allocate req on the fly. > >> + case BPF_DYNPTR_TYPE_SKB: > >> + return skb_pointer_if_linear(ptr->data, ptr->offset, __bpf_dynptr_size(ptr)); > > > > dynptr takes care of checking if skb can be written to? > > dynptr is used to take care of size checking, but this particular part is used > to provide plain buffer from skb. I'm really sure if we can (or should) encrypt > or decrypt in-place, so API now assumes that src and dst are different buffers. Not sure this answers my question. What I'm asking is basically whether for destination we need to call __bpf_dynptr_is_rdonly() or something already checks that.
