dpdk: simplify optimization for CPU family

Make it easier optimize DPDK for a CPU family. The conservative default
remains (e.g. nehalem for x86_64), but a user may override it for better
utilization of recent CPU models, e.g. `{ machine = "x86-64-v4"; }` for
AVX512 support.
This commit is contained in:
Nicolas Benes 2023-01-22 00:35:37 +01:00
parent 118290c00a
commit 203e5461b2

View File

@ -5,7 +5,13 @@
, libbsd, numactl, libbpf, zlib, libelf, jansson, openssl, libpcap, rdma-core
, doxygen, python3, pciutils
, withExamples ? []
, shared ? false }:
, shared ? false
, machine ? (
if stdenv.isx86_64 then "nehalem"
else if stdenv.isAarch64 then "generic"
else null
)
}:
let
mod = kernel != null;
@ -63,8 +69,7 @@ in stdenv.mkDerivation rec {
# kni kernel driver is currently not compatble with 5.11
++ lib.optional (mod && kernel.kernelOlder "5.11") "-Ddisable_drivers=kni"
++ lib.optional (!shared) "-Ddefault_library=static"
++ lib.optional stdenv.isx86_64 "-Dmachine=nehalem"
++ lib.optional stdenv.isAarch64 "-Dmachine=generic"
++ lib.optional (machine != null) "-Dmachine=${machine}"
++ lib.optional mod "-Dkernel_dir=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
++ lib.optional (withExamples != []) "-Dexamples=${builtins.concatStringsSep "," withExamples}";