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From: Stephen Hemminger <stephen@networkplumber.org>
To: dev@dpdk.org
Cc: Stephen Hemminger <stephen@networkplumber.org>, stable@dpdk.org
Subject: [dpdk-dev] [PATCH v2 1/4] net/netvsc: propogate descriptor limits from VF to netvsc
Date: Wed, 18 Mar 2020 13:29:54 -0700	[thread overview]
Message-ID: <20200318202957.18121-2-stephen@networkplumber.org> (raw)
In-Reply-To: <20200318202957.18121-1-stephen@networkplumber.org>

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(+)

diff --git a/drivers/net/netvsc/hn_vf.c b/drivers/net/netvsc/hn_vf.c
index 7a3734cadfa4..1261b2e2ef85 100644
--- a/drivers/net/netvsc/hn_vf.c
+++ b/drivers/net/netvsc/hn_vf.c
@@ -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;
 }
-- 
2.20.1


  reply	other threads:[~2020-03-18 20:34 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-16 23:56 [dpdk-dev] [PATCH 0/2] net/netvsc: patches Stephen Hemminger
2020-03-16 23:56 ` [dpdk-dev] [PATCH 1/2] net/netvsc: handle receive packets during multi-channel setup Stephen Hemminger
2020-03-16 23:56 ` [dpdk-dev] [PATCH 2/2] net/netvsc: avoid mixing buffered and direct packets Stephen Hemminger
2020-03-18 17:33 ` [dpdk-dev] [PATCH 0/2] net/netvsc: patches Ferruh Yigit
2020-03-18 18:09   ` Stephen Hemminger
2020-03-19  9:06     ` Ferruh Yigit
2020-03-18 20:29 ` [dpdk-dev] [PATCH v2 0/4] net/netvsc patches Stephen Hemminger
2020-03-18 20:29   ` Stephen Hemminger [this message]
2020-03-18 20:29   ` [dpdk-dev] [PATCH v2 2/4] net/netvsc: handle receive packets during multi-channel setup Stephen Hemminger
2020-03-18 20:29   ` [dpdk-dev] [PATCH v2 3/4] net/netvsc: split send buffers from transmit descriptors Stephen Hemminger
2020-03-18 20:29   ` [dpdk-dev] [PATCH v2 4/4] net/netvsc: don't enable RSS if only single receive queue Stephen Hemminger
2020-03-18 20:51 ` [dpdk-dev] [PATCH v3 0/4] net/netvsc patches Stephen Hemminger
2020-03-18 20:51   ` [dpdk-dev] [PATCH v3 1/4] net/netvsc: propagate descriptor limits from VF to netvsc Stephen Hemminger
2020-03-18 20:51   ` [dpdk-dev] [PATCH v3 2/4] net/netvsc: handle receive packets during multi-channel setup Stephen Hemminger
2020-03-18 20:51   ` [dpdk-dev] [PATCH v3 3/4] net/netvsc: split send buffers from transmit descriptors Stephen Hemminger
2020-03-18 20:51   ` [dpdk-dev] [PATCH v3 4/4] net/netvsc: don't enable RSS if only single receive queue Stephen Hemminger
2020-03-31 17:13 ` [dpdk-dev] [PATCH v4 0/8] net/netvsc: bug fixes Stephen Hemminger
2020-03-31 17:13   ` [dpdk-dev] [PATCH v4 1/8] net/netvsc: propagate descriptor limits from VF to netvsc Stephen Hemminger
2020-03-31 17:13   ` [dpdk-dev] [PATCH v4 2/8] net/netvsc: handle receive packets during multi-channel setup Stephen Hemminger
2020-03-31 17:13   ` [dpdk-dev] [PATCH v4 3/8] net/netvsc: split send buffers from transmit descriptors Stephen Hemminger
2020-03-31 17:14   ` [dpdk-dev] [PATCH v4 4/8] net/netvsc: fix invalid rte_free on dev_close Stephen Hemminger
2020-04-06 16:00     ` [dpdk-dev] [dpdk-stable] " Ferruh Yigit
2020-03-31 17:14   ` [dpdk-dev] [PATCH v4 5/8] net/netvsc: remove process event optimization Stephen Hemminger
2020-03-31 17:14   ` [dpdk-dev] [PATCH v4 6/8] net/netvsc: handle transmit completions based on burst size Stephen Hemminger
2020-03-31 17:14   ` [dpdk-dev] [PATCH v4 7/8] bus/vmbus: simplify args to need_signal Stephen Hemminger
2020-03-31 17:14   ` [dpdk-dev] [PATCH v4 8/8] net/netvsc: avoid possible live lock Stephen Hemminger
2020-04-07  8:34   ` [dpdk-dev] [PATCH v4 0/8] net/netvsc: bug fixes Ferruh Yigit

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