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Mon, 16 Dec 2019 04:44:11 -0500 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D474F107ACE3; Mon, 16 Dec 2019 09:44:09 +0000 (UTC) Received: from [10.36.112.19] (ovpn-112-19.ams2.redhat.com [10.36.112.19]) by smtp.corp.redhat.com (Postfix) with ESMTPS id C059B19C7F; Mon, 16 Dec 2019 09:44:08 +0000 (UTC) To: Tiwei Bie , Ivan Dyukov Cc: dev@dpdk.org References: <20191213144442.32048-1-i.dyukov@samsung.com> <46436ac3-5e45-cba2-45eb-82f5f7e24f71@redhat.com> <6afbfe48-52fd-c66f-9ac2-dfb89fb55832@samsung.com> <20191216060656.GA189589@___> From: Maxime Coquelin Autocrypt: addr=maxime.coquelin@redhat.com; keydata= mQINBFOEQQIBEADjNLYZZqghYuWv1nlLisptPJp+TSxE/KuP7x47e1Gr5/oMDJ1OKNG8rlNg kLgBQUki3voWhUbMb69ybqdMUHOl21DGCj0BTU3lXwapYXOAnsh8q6RRM+deUpasyT+Jvf3a gU35dgZcomRh5HPmKMU4KfeA38cVUebsFec1HuJAWzOb/UdtQkYyZR4rbzw8SbsOemtMtwOx YdXodneQD7KuRU9IhJKiEfipwqk2pufm2VSGl570l5ANyWMA/XADNhcEXhpkZ1Iwj3TWO7XR uH4xfvPl8nBsLo/EbEI7fbuUULcAnHfowQslPUm6/yaGv6cT5160SPXT1t8U9QDO6aTSo59N jH519JS8oeKZB1n1eLDslCfBpIpWkW8ZElGkOGWAN0vmpLfdyiqBNNyS3eGAfMkJ6b1A24un /TKc6j2QxM0QK4yZGfAxDxtvDv9LFXec8ENJYsbiR6WHRHq7wXl/n8guyh5AuBNQ3LIK44x0 KjGXP1FJkUhUuruGyZsMrDLBRHYi+hhDAgRjqHgoXi5XGETA1PAiNBNnQwMf5aubt+mE2Q5r qLNTgwSo2dpTU3+mJ3y3KlsIfoaxYI7XNsPRXGnZi4hbxmeb2NSXgdCXhX3nELUNYm4ArKBP LugOIT/zRwk0H0+RVwL2zHdMO1Tht1UOFGfOZpvuBF60jhMzbQARAQABtCxNYXhpbWUgQ29x dWVsaW4gPG1heGltZS5jb3F1ZWxpbkByZWRoYXQuY29tPokCOAQTAQIAIgUCV3u/5QIbAwYL CQgHAwIGFQgCCQoLBBYCAwECHgECF4AACgkQyjiNKEaHD4ma2g/+P+Hg9WkONPaY1J4AR7Uf kBneosS4NO3CRy0x4WYmUSLYMLx1I3VH6SVjqZ6uBoYy6Fs6TbF6SHNc7QbB6Qjo3neqnQR1 71Ua1MFvIob8vUEl3jAR/+oaE1UJKrxjWztpppQTukIk4oJOmXbL0nj3d8dA2QgHdTyttZ1H xzZJWWz6vqxCrUqHU7RSH9iWg9R2iuTzii4/vk1oi4Qz7y/q8ONOq6ffOy/t5xSZOMtZCspu Mll2Szzpc/trFO0pLH4LZZfz/nXh2uuUbk8qRIJBIjZH3ZQfACffgfNefLe2PxMqJZ8mFJXc RQO0ONZvwoOoHL6CcnFZp2i0P5ddduzwPdGsPq1bnIXnZqJSl3dUfh3xG5ArkliZ/++zGF1O wvpGvpIuOgLqjyCNNRoR7cP7y8F24gWE/HqJBXs1qzdj/5Hr68NVPV1Tu/l2D1KMOcL5sOrz 2jLXauqDWn1Okk9hkXAP7+0Cmi6QwAPuBT3i6t2e8UdtMtCE4sLesWS/XohnSFFscZR6Vaf3 gKdWiJ/fW64L6b9gjkWtHd4jAJBAIAx1JM6xcA1xMbAFsD8gA2oDBWogHGYcScY/4riDNKXi lw92d6IEHnSf6y7KJCKq8F+Jrj2BwRJiFKTJ6ChbOpyyR6nGTckzsLgday2KxBIyuh4w+hMq TGDSp2rmWGJjASq5Ag0EVPSbkwEQAMkaNc084Qvql+XW+wcUIY+Dn9A2D1gMr2BVwdSfVDN7 0ZYxo9PvSkzh6eQmnZNQtl8WSHl3VG3IEDQzsMQ2ftZn2sxjcCadexrQQv3Lu60Tgj7YVYRM H+fLYt9W5YuWduJ+FPLbjIKynBf6JCRMWr75QAOhhhaI0tsie3eDsKQBA0w7WCuPiZiheJaL 4MDe9hcH4rM3ybnRW7K2dLszWNhHVoYSFlZGYh+MGpuODeQKDS035+4H2rEWgg+iaOwqD7bg CQXwTZ1kSrm8NxIRVD3MBtzp9SZdUHLfmBl/tLVwDSZvHZhhvJHC6Lj6VL4jPXF5K2+Nn/Su CQmEBisOmwnXZhhu8ulAZ7S2tcl94DCo60ReheDoPBU8PR2TLg8rS5f9w6mLYarvQWL7cDtT d2eX3Z6TggfNINr/RTFrrAd7NHl5h3OnlXj7PQ1f0kfufduOeCQddJN4gsQfxo/qvWVB7PaE 1WTIggPmWS+Xxijk7xG6x9McTdmGhYaPZBpAxewK8ypl5+yubVsE9yOOhKMVo9DoVCjh5To5 aph7CQWfQsV7cd9PfSJjI2lXI0dhEXhQ7lRCFpf3V3mD6CyrhpcJpV6XVGjxJvGUale7+IOp sQIbPKUHpB2F+ZUPWds9yyVxGwDxD8WLqKKy0WLIjkkSsOb9UBNzgRyzrEC9lgQ/ABEBAAGJ Ah8EGAECAAkFAlT0m5MCGwwACgkQyjiNKEaHD4nU8hAAtt0xFJAy0sOWqSmyxTc7FUcX+pbD KVyPlpl6urKKMk1XtVMUPuae/+UwvIt0urk1mXi6DnrAN50TmQqvdjcPTQ6uoZ8zjgGeASZg jj0/bJGhgUr9U7oG7Hh2F8vzpOqZrdd65MRkxmc7bWj1k81tOU2woR/Gy8xLzi0k0KUa8ueB iYOcZcIGTcs9CssVwQjYaXRoeT65LJnTxYZif2pfNxfINFzCGw42s3EtZFteczClKcVSJ1+L +QUY/J24x0/ocQX/M1PwtZbB4c/2Pg/t5FS+s6UB1Ce08xsJDcwyOPIH6O3tccZuriHgvqKP yKz/Ble76+NFlTK1mpUlfM7PVhD5XzrDUEHWRTeTJSvJ8TIPL4uyfzhjHhlkCU0mw7Pscyxn DE8G0UYMEaNgaZap8dcGMYH/96EfE5s/nTX0M6MXV0yots7U2BDb4soLCxLOJz4tAFDtNFtA wLBhXRSvWhdBJZiig/9CG3dXmKfi2H+wdUCSvEFHRpgo7GK8/Kh3vGhgKmnnxhl8ACBaGy9n fxjSxjSO6rj4/MeenmlJw1yebzkX8ZmaSi8BHe+n6jTGEFNrbiOdWpJgc5yHIZZnwXaW54QT UhhSjDL1rV2B4F28w30jYmlRmm2RdN7iCZfbyP3dvFQTzQ4ySquuPkIGcOOHrvZzxbRjzMx1 Mwqu3GQ= Message-ID: <8ab7ee73-73ed-4c2f-a226-3f9be587729b@redhat.com> Date: Mon, 16 Dec 2019 10:44:07 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.0 MIME-Version: 1.0 In-Reply-To: <20191216060656.GA189589@___> Content-Language: en-US X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-MC-Unique: NNmlbAlmNKi5wqDV55MMrA-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [dpdk-dev] [PATCH v2] net/virtio: add link speed tuning X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 12/16/19 7:06 AM, Tiwei Bie wrote: > On Fri, Dec 13, 2019 at 08:39:11PM +0300, Ivan Dyukov wrote: >> Hi Maxime, >> Thank you for comments. >> >> >> 13.12.2019 17:59, Maxime Coquelin =D0=BF=D0=B8=D1=88=D0=B5=D1=82: >>> Hi Ivan, >>> >>> On 12/13/19 3:44 PM, Ivan Dyukov wrote: >>>> Some applications like pktgen use link_speed to calculate transmit >>>> rate. It limits outcome traffic to hardcoded 10G. >>>> >>>> This patch makes link_speed configurable at compile time. >>>> >>>> Signed-off-by: Ivan Dyukov >>>> --- >>>> config/common_base | 1 + >>>> config/meson.build | 1 + >>>> drivers/net/vhost/rte_eth_vhost.c | 2 +- >>>> drivers/net/virtio/virtio_ethdev.c | 20 ++++++++++++++++---- >>>> 4 files changed, 19 insertions(+), 5 deletions(-) >>>> >>>> diff --git a/config/common_base b/config/common_base >>>> index 7dec7ed45..8589ca4ec 100644 >>>> --- a/config/common_base >>>> +++ b/config/common_base >>>> @@ -433,6 +433,7 @@ CONFIG_RTE_LIBRTE_AVP_DEBUG_BUFFERS=3Dn >>>> # Compile burst-oriented VIRTIO PMD driver >>>> # >>>> CONFIG_RTE_LIBRTE_VIRTIO_PMD=3Dy >>>> +CONFIG_RTE_LIBRTE_VIRTIO_LINK_SPEED=3D10000 >>>> CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_RX=3Dn >>>> CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_TX=3Dn >>>> CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_DUMP=3Dn >>>> diff --git a/config/meson.build b/config/meson.build >>>> index 364a8d739..78c30f334 100644 >>>> --- a/config/meson.build >>>> +++ b/config/meson.build >>>> @@ -202,6 +202,7 @@ dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('u= se_hpet')) >>>> dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64) >>>> dpdk_conf.set('RTE_DRIVER_MEMPOOL_BUCKET_SIZE_KB', 64) >>>> dpdk_conf.set('RTE_LIBRTE_DPAA2_USE_PHYS_IOVA', true) >>>> +dpdk_conf.set('RTE_LIBRTE_VIRTIO_LINK_SPEED', 10000) >>>> =20 >>>> =20 >>>> compile_time_cpuflags =3D [] >>>> diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte= _eth_vhost.c >>>> index 46f01a7f4..38eaa5955 100644 >>>> --- a/drivers/net/vhost/rte_eth_vhost.c >>>> +++ b/drivers/net/vhost/rte_eth_vhost.c >>>> @@ -115,7 +115,7 @@ static struct internal_list_head internal_list =3D >>>> static pthread_mutex_t internal_list_lock =3D PTHREAD_MUTEX_INITIALI= ZER; >>>> =20 >>>> static struct rte_eth_link pmd_link =3D { >>>> -=09=09.link_speed =3D 10000, >>>> +=09=09.link_speed =3D RTE_LIBRTE_VIRTIO_LINK_SPEED, >>>> =09=09.link_duplex =3D ETH_LINK_FULL_DUPLEX, >>>> =09=09.link_status =3D ETH_LINK_DOWN >>>> }; >>>> diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/v= irtio_ethdev.c >>>> index 044eb10a7..948091cc2 100644 >>>> --- a/drivers/net/virtio/virtio_ethdev.c >>>> +++ b/drivers/net/virtio/virtio_ethdev.c >>>> @@ -2371,7 +2371,7 @@ virtio_dev_link_update(struct rte_eth_dev *dev, = __rte_unused int wait_to_complet >>>> =20 >>>> =09memset(&link, 0, sizeof(link)); >>>> =09link.link_duplex =3D ETH_LINK_FULL_DUPLEX; >>>> -=09link.link_speed =3D ETH_SPEED_NUM_10G; >>>> +=09link.link_speed =3D RTE_LIBRTE_VIRTIO_LINK_SPEED; >>>> =09link.link_autoneg =3D ETH_LINK_FIXED; >>>> =20 >>>> =09if (!hw->started) { >>>> @@ -2426,9 +2426,21 @@ virtio_dev_info_get(struct rte_eth_dev *dev, st= ruct rte_eth_dev_info *dev_info) >>>> { >>>> =09uint64_t tso_mask, host_features; >>>> =09struct virtio_hw *hw =3D dev->data->dev_private; >>>> - >>>> -=09dev_info->speed_capa =3D ETH_LINK_SPEED_10G; /* fake value */ >>>> - >>>> +#if RTE_LIBRTE_VIRTIO_LINK_SPEED =3D=3D ETH_LINK_SPEED_20G >>>> +=09dev_info->speed_capa =3D ETH_LINK_SPEED_20G; >>>> +#elif RTE_LIBRTE_VIRTIO_LINK_SPEED =3D=3D ETH_SPEED_NUM_25G >>>> +=09dev_info->speed_capa =3D ETH_LINK_SPEED_25G; >>>> +#elif RTE_LIBRTE_VIRTIO_LINK_SPEED =3D=3D ETH_SPEED_NUM_40G >>>> +=09dev_info->speed_capa =3D ETH_LINK_SPEED_40G; >>>> +#elif RTE_LIBRTE_VIRTIO_LINK_SPEED =3D=3D ETH_SPEED_NUM_50G >>>> +=09dev_info->speed_capa =3D ETH_LINK_SPEED_50G; >>>> +#elif RTE_LIBRTE_VIRTIO_LINK_SPEED =3D=3D ETH_SPEED_NUM_56G >>>> +=09dev_info->speed_capa =3D ETH_LINK_SPEED_56G; >>>> +#elif RTE_LIBRTE_VIRTIO_LINK_SPEED =3D=3D ETH_SPEED_NUM_100G >>>> +=09dev_info->speed_capa =3D ETH_LINK_SPEED_100G; >>>> +#else >>>> +=09dev_info->speed_capa =3D ETH_LINK_SPEED_10G; >>>> +#endif >>>> =09dev_info->max_rx_queues =3D >>>> =09=09RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES); >>>> =09dev_info->max_tx_queues =3D >>>> >>> I think we may need toi extend the Virtio specification so that the >>> device can advertise the link speed. >> I agree. It will be more flexible solution, but it will require another= =20 >> effort. I'll evalutate virtio spec and check if it's suitable for such= =20 >> changes. >=20 > FYI: https://lists.oasis-open.org/archives/virtio-comment/201911/msg00058= .html Great, thanks Tiwei for the pointer! >=20 >>> Problem with your proposal is that it is build time only, so: >>> 1. It won't be configurable when using distros DPDK package. >>> 2. All the Virtio devices on a system will have the same value >> Current implementation is same. Nothing is broken here. :) >>> While any Virtio spec update introduce link speed support, wouldn't it >>> be preferable to have this as a devarg? >> For my case, compile time configuration is ok. Let me prepare solution= =20 >> with devarg then we can choose the better one. >>> Thanks, >>> Maxime >> >> Best regards, >> >> Ivan. >> >=20