From: "Morten Brørup" <mb@smartsharesystems.com>
To: <maxime.coquelin@redhat.com>, "Chenbo Xia" <chenbox@nvidia.com>,
<thomas@monjalon.net>, "Ferruh Yigit" <ferruh.yigit@amd.com>,
<andrew.rybchenko@oktetlabs.ru>
Cc: <dev@dpdk.org>
Subject: RE: virtio: RSS support capa
Date: Sat, 7 Sep 2024 22:55:58 +0200 [thread overview]
Message-ID: <98CBD80474FA8B44BF855DF32C47DC35E9F6BD@smartserver.smartshare.dk> (raw)
In-Reply-To: <98CBD80474FA8B44BF855DF32C47DC35E9F6BB@smartserver.smartshare.dk>
> From: Morten Brørup [mailto:mb@smartsharesystems.com]
> Sent: Friday, 6 September 2024 21.38
>
> Maxime, Chenbo,
>
> If the virtio PMD supports RSS, it should be announced in its
> capabilities.
>
> I think this should be added to virtio_dev_info_get():
>
> if (host_features & (1ULL << VIRTIO_NET_F_RSS))
> dev_info->rx_offload_capa |= RTE_ETH_RX_OFFLOAD_RSS_HASH;
Or perhaps I'm misunderstanding this capability flag.
I thought it indicated RSS ability, i.e. multi-queue, effectively shadowing rte_eth_conf.rxmode.mq_mode RTE_ETH_MQ_RX_RSS_FLAG.
But maybe it doesn't. Maybe it indicates the ability to store the RSS hash value in the mbuf.
The RTE_ETH_RX_OFFLOAD_RSS_HASH flag is completely undocumented.
Can someone please clarify?
next prev parent reply other threads:[~2024-09-07 20:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-06 19:38 Morten Brørup
2024-09-07 20:55 ` Morten Brørup [this message]
2024-09-08 8:32 ` Andrew Rybchenko
2024-09-11 12:17 ` Morten Brørup
2024-09-11 13:20 ` Thomas Monjalon
2024-09-11 14:02 ` Ferruh Yigit
2024-09-11 14:28 ` Ferruh Yigit
2024-09-11 14:59 ` Morten Brørup
2024-09-11 16:18 ` Ferruh Yigit
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