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

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Message-ID: <b645e3e3-b42a-4d7a-b5f1-8f8fd9eff0ee@daynix.com>
Date: Fri, 10 Jan 2025 18:47:56 +0900
From: Akihiko Odaki <akihiko.odaki@...nix.com>
To: Willem de Bruijn <willemdebruijn.kernel@...il.com>,
 Jonathan Corbet <corbet@....net>, 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
Subject: Re: [PATCH v6 5/6] selftest: tun: Add tests for virtio-net hashing

On 2025/01/09 23:36, Willem de Bruijn wrote:
> 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).
>    

Yes. I placed header files in linux/ after the other header files 
because include/uapi/linux/libc-compat.h requires libc header files to 
be placed before linux/ ones.