[v3,1/4] net/netvsc: propagate descriptor limits from VF to netvsc
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Commit Message
If application cares about descriptor limits, the netvsc device
values should reflect those of the VF as well.
Fixes: dc7680e8597c ("net/netvsc: support integrated VF")
Cc: stable@dpdk.org
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
drivers/net/netvsc/hn_vf.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
@@ -167,6 +167,17 @@ hn_nvs_handle_vfassoc(struct rte_eth_dev *dev,
hn_vf_remove(hv);
}
+static void
+hn_vf_merge_desc_lim(struct rte_eth_desc_lim *lim,
+ const struct rte_eth_desc_lim *vf_lim)
+{
+ lim->nb_max = RTE_MIN(vf_lim->nb_max, lim->nb_max);
+ lim->nb_min = RTE_MAX(vf_lim->nb_min, lim->nb_min);
+ lim->nb_align = RTE_MAX(vf_lim->nb_align, lim->nb_align);
+ lim->nb_seg_max = RTE_MIN(vf_lim->nb_seg_max, lim->nb_seg_max);
+ lim->nb_mtu_seg_max = RTE_MIN(vf_lim->nb_seg_max, lim->nb_seg_max);
+}
+
/*
* Merge the info from the VF and synthetic path.
* use the default config of the VF
@@ -196,11 +207,13 @@ static int hn_vf_info_merge(struct rte_eth_dev *vf_dev,
info->max_tx_queues);
info->tx_offload_capa &= vf_info.tx_offload_capa;
info->tx_queue_offload_capa &= vf_info.tx_queue_offload_capa;
+ hn_vf_merge_desc_lim(&info->tx_desc_lim, &vf_info.tx_desc_lim);
info->min_rx_bufsize = RTE_MAX(vf_info.min_rx_bufsize,
info->min_rx_bufsize);
info->max_rx_pktlen = RTE_MAX(vf_info.max_rx_pktlen,
info->max_rx_pktlen);
+ hn_vf_merge_desc_lim(&info->rx_desc_lim, &vf_info.rx_desc_lim);
return 0;
}