linux-kernel - Re: [PATCH v6 5/6] selftest: tun: Add tests for virtio-net hashing

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Message-ID: <677fdee2b56d_362bc129446@willemb.c.googlers.com.notmuch>
Date: Thu, 09 Jan 2025 09:36:18 -0500
From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
To: Akihiko Odaki <akihiko.odaki@...nix.com>, 
 Jonathan Corbet <corbet@....net>, 
 Willem de Bruijn <willemdebruijn.kernel@...il.com>, 
 Jason Wang <jasowang@...hat.com>, 
 "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, 
 "Michael S. Tsirkin" <mst@...hat.com>, 
 Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, 
 Shuah Khan <shuah@...nel.org>, 
 linux-doc@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 netdev@...r.kernel.org, 
 kvm@...r.kernel.org, 
 virtualization@...ts.linux-foundation.org, 
 linux-kselftest@...r.kernel.org, 
 Yuri Benditovich <yuri.benditovich@...nix.com>, 
 Andrew Melnychenko <andrew@...nix.com>, 
 Stephen Hemminger <stephen@...workplumber.org>, 
 gur.stavi@...wei.com, 
 Akihiko Odaki <akihiko.odaki@...nix.com>
Subject: Re: [PATCH v6 5/6] selftest: tun: Add tests for virtio-net hashing

Akihiko Odaki wrote:
> The added tests confirm tun can perform RSS and hash reporting, and
> reject invalid configurations for them.
> 
> Signed-off-by: Akihiko Odaki <akihiko.odaki@...nix.com>
> ---
>  tools/testing/selftests/net/Makefile |   2 +-
>  tools/testing/selftests/net/tun.c    | 558 ++++++++++++++++++++++++++++++++++-
>  2 files changed, 551 insertions(+), 9 deletions(-)
> 
> diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
> index cb2fc601de66..92762ce3ebd4 100644
> --- a/tools/testing/selftests/net/Makefile
> +++ b/tools/testing/selftests/net/Makefile
> @@ -121,6 +121,6 @@ $(OUTPUT)/reuseport_bpf_numa: LDLIBS += -lnuma
>  $(OUTPUT)/tcp_mmap: LDLIBS += -lpthread -lcrypto
>  $(OUTPUT)/tcp_inq: LDLIBS += -lpthread
>  $(OUTPUT)/bind_bhash: LDLIBS += -lpthread
> -$(OUTPUT)/io_uring_zerocopy_tx: CFLAGS += -I../../../include/
> +$(OUTPUT)/io_uring_zerocopy_tx $(OUTPUT)/tun: CFLAGS += -I../../../include/
>  
>  include bpf.mk
> diff --git a/tools/testing/selftests/net/tun.c b/tools/testing/selftests/net/tun.c
> index 463dd98f2b80..9424d897e341 100644
> --- a/tools/testing/selftests/net/tun.c
> +++ b/tools/testing/selftests/net/tun.c
> @@ -2,21 +2,37 @@
>  
>  #define _GNU_SOURCE
>  
> +#include <endian.h>
>  #include <errno.h>
>  #include <fcntl.h>
> +#include <stddef.h>
>  #include <stdio.h>
>  #include <stdlib.h>
>  #include <string.h>
>  #include <unistd.h>
> -#include <linux/if.h>
> +#include <net/if.h>
> +#include <netinet/ip.h>
> +#include <sys/ioctl.h>
> +#include <sys/socket.h>
> +#include <linux/compiler.h>
> +#include <linux/icmp.h>
> +#include <linux/if_arp.h>
>  #include <linux/if_tun.h>
> +#include <linux/ipv6.h>
>  #include <linux/netlink.h>
>  #include <linux/rtnetlink.h>
> -#include <sys/ioctl.h>
> -#include <sys/socket.h>
> +#include <linux/sockios.h>
> +#include <linux/tcp.h>
> +#include <linux/udp.h>
> +#include <linux/virtio_net.h>

Are all these include changes strictly needed? Iff so, might as well
fix ordering to be alphabetical (lexicographic).