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net/virtio: fix device configure without jumbo Rx offload

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Use max-pkt-len only if jumbo frames offload is requested
since otherwise this field isn't valid.

Fixes: 8b90e43581 ("net/virtio: set offload flag for jumbo frames")
Fixes: 4e8169eb0d ("net/virtio: fix Rx scatter offload")
Cc: stable@dpdk.org

Signed-off-by: Ivan Ilchenko <ivan.ilchenko@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Ivan Ilchenko 2021-09-02 17:39:39 +03:00 committed by Maxime Coquelin
parent 945ef8a040
commit 580f3af31c
1 changed files with 6 additions and 2 deletions
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8
drivers/net/virtio/virtio_ethdev.c
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@ -2103,10 +2103,14 @@ virtio_dev_configure(struct rte_eth_dev *dev)
return ret;
}
if (rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len)
if ((rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME) &&
(rxmode->max_rx_pkt_len > hw->max_mtu + ether_hdr_len))
req_features &= ~(1ULL << VIRTIO_NET_F_MTU);
hw->max_rx_pkt_len = rxmode->max_rx_pkt_len;
if (rx_offloads & DEV_RX_OFFLOAD_JUMBO_FRAME)
hw->max_rx_pkt_len = rxmode->max_rx_pkt_len;
else
hw->max_rx_pkt_len = ether_hdr_len + dev->data->mtu;
if (rx_offloads & (DEV_RX_OFFLOAD_UDP_CKSUM |
DEV_RX_OFFLOAD_TCP_CKSUM))