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Fri, 13 Dec 2019 09:59:27 -0500 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C160E8D9F80; Fri, 13 Dec 2019 14:59:26 +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 904A76362E; Fri, 13 Dec 2019 14:59:25 +0000 (UTC) To: Ivan Dyukov , dev@dpdk.org, tiwei.bie@intel.com References: <20191213144442.32048-1-i.dyukov@samsung.com> 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: <46436ac3-5e45-cba2-45eb-82f5f7e24f71@redhat.com> Date: Fri, 13 Dec 2019 15:59:23 +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: <20191213144442.32048-1-i.dyukov@samsung.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-MC-Unique: gTHmW69JP6iQek9WSNy87w-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" 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. >=20 > This patch makes link_speed configurable at compile time. >=20 > 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(-) >=20 > 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('use_= 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_et= h_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_INITIALIZER; > =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/virt= io_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, __r= te_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, struc= t 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 >=20 I think we may need toi extend the Virtio specification so that the device can advertise the link speed. 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 While any Virtio spec update introduce link speed support, wouldn't it be preferable to have this as a devarg? Thanks, Maxime