ena: Init at 20160629

This adds the Amazon Elastic Network Adapter kernel module required by
EC2 x1.* instances.

(cherry picked from commit 871067222562bbb8616eb4ce97d595425e688c00)

pkgs/os-specific/linux/ena/default.nix

···
+{ lib, stdenv, fetchFromGitHub, kernel, kmod }:
+
+stdenv.mkDerivation rec {
+  name = "ena-20160629-${kernel.version}";
+
+  src = fetchFromGitHub {
+    owner = "amzn";
+    repo = "amzn-drivers";
+    rev = "b594ac1ea9e0c70e8e95803a0cfd9f5f06ac097e";
+    sha256 = "03w6xgv3lfn28n38mj9cdi3px5zjyrbxnflpd3ggivkv6grf9fp7";
+  };
+
+  configurePhase =
+    ''
+      cd kernel/linux/ena
+      substituteInPlace Makefile --replace '/lib/modules/$(BUILD_KERNEL)' ${kernel.dev}/lib/modules/${kernel.modDirVersion}
+    '';
+
+  installPhase =
+    ''
+      strip -S ena.ko
+      dest=$out/lib/modules/${kernel.modDirVersion}/misc
+      mkdir -p $dest
+      cp ena.ko $dest/
+      xz $dest/ena.ko
+    '';
+
+  meta = {
+    description = "Amazon Elastic Network Adapter (ENA) driver for Linux";
+    homepage = https://github.com/amzn/amzn-drivers;
+    license = lib.licenses.gpl2;
+    maintainers = [ lib.maintainers.eelco ];
+  };
+}

pkgs/top-level/all-packages.nix

···
 
     ixgbevf = callPackage ../os-specific/linux/ixgbevf {};
 
+    ena = callPackage ../os-specific/linux/ena {};
+
     v4l2loopback = callPackage ../os-specific/linux/v4l2loopback { };
 
     frandom = callPackage ../os-specific/linux/frandom { };