10:23 <ehirdoy> Does anyone know how to get a C pointer to a buffer from Cstruct.t? https://mirage.github.io/ocaml-cstruct/cstruct/Cstruct/index.html#type-buffer

10:23 <ehirdoy> I meant, 'raw buffer' in the above.

10:34 <hannes> ehirdoy: you may want to look at https://github.com/mirage/mirage-solo5/blob/master/lib/bindings/solo5_net_stubs.c which is used by https://github.com/mirage/mirage-net-solo5/blob/master/src/netif.ml passing a cstruct.t from OCaml to C (if i understand your question correctly)

10:37 <hannes> (the mirage_solo5_net_read_2 / write)

10:51 <ehirdoy> @hannes Cool!! Also where can I find the OCaml caller of mirage_solo5_net_read_2?

10:51 <ehirdoy> freestanding?

10:51 <hannes> ehirdoy: in mirage-net-solo5, the second URL i posted.

10:51 <hannes> external solo5_net_read:

10:51 <hannes> Cstruct.buffer -> int -> int -> solo5_result * int = "mirage_solo5_net_read_2"

10:52 <hannes> (and then solo5_net_read is called in https://github.com/mirage/mirage-net-solo5/blob/master/src/netif.ml#L81)

10:54 <ehirdoy> true. I need more coffee ;)

12:17 <apache2> ehirdoy: pointers are usually not exposed, are you writing C or OCaml?

12:17 <apache2> from the OCaml side there's Io_page.get_addr

18:41 <ehirdoy> apache2: I'm passing a Cstruct buffer from 'TCPV4.read flow' to a C function/framework. So there's no way to avoid Cstruct here, then ;)