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netdev-dpdk: Fix RSS configuration for virtio.

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In the future, virtio may support RSS.
In any case, it is safer to rely on exposed capabilities rather than
matching on driver names.

Signed-off-by: David Marchand <david.marchand@redhat.com>
Acked-by: Michael Santana <msantana@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
This commit is contained in:
David Marchand
2021-08-30 12:13:04 +02:00
committed by Ilya Maximets
parent d0020c5e87
commit 5e86db383f
1 changed files with 5 additions and 8 deletions
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13
lib/netdev-dpdk.c
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@@ -961,14 +961,6 @@ dpdk_eth_dev_port_config(struct netdev_dpdk *dev, int n_rxq, int n_txq)
rte_eth_dev_info_get(dev->port_id, &info);
/* As of DPDK 19.11, it is not allowed to set a mq_mode for
* virtio PMD driver. */
if (!strcmp(info.driver_name, "net_virtio")) {
conf.rxmode.mq_mode = ETH_MQ_RX_NONE;
} else {
conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
}
/* As of DPDK 17.11.1 a few PMDs require to explicitly enable
* scatter to support jumbo RX.
* Setting scatter for the device is done after checking for
@@ -1000,6 +992,11 @@ dpdk_eth_dev_port_config(struct netdev_dpdk *dev, int n_rxq, int n_txq)
/* Limit configured rss hash functions to only those supported
* by the eth device. */
conf.rx_adv_conf.rss_conf.rss_hf &= info.flow_type_rss_offloads;
if (conf.rx_adv_conf.rss_conf.rss_hf == 0) {
conf.rxmode.mq_mode = ETH_MQ_RX_NONE;
} else {
conf.rxmode.mq_mode = ETH_MQ_RX_RSS;
}
/* A device may report more queues than it makes available (this has
* been observed for Intel xl710, which reserves some of them for