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From: Ivan Dyukov <i.dyukov@samsung.com>
To: dev@dpdk.org
Cc: Ivan Dyukov <i.dyukov@samsung.com>
Date: Thu, 12 Dec 2019 11:50:12 +0300
Message-Id: <20191212085012.9170-1-i.dyukov@samsung.com>
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References: <CGME20191212085020eucas1p1be6d915a6610edf182d2ab0294c2a903@eucas1p1.samsung.com>
Subject: [dpdk-dev] [PATCH] net/virtio: add link speed tuning
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Some applications like pktgen use link_speed to calculate transmit
rate. It limits outcome traffic to hardcoded 10G.
This patch makes link_speed configurable at compile time.
Signed-off-by: Ivan Dyukov <i.dyukov@samsung.com>
---
config/common_base | 1 +
drivers/net/vhost/rte_eth_vhost.c | 2 +-
drivers/net/virtio/virtio_ethdev.c | 20 ++++++++++++++++----
3 files changed, 18 insertions(+), 5 deletions(-)
diff --git a/config/common_base b/config/common_base
index 7dec7ed45..8589ca4ec 100644
--- a/config/common_base
+++ b/config/common_base
@@ -433,6 +433,7 @@ CONFIG_RTE_LIBRTE_AVP_DEBUG_BUFFERS=n
# Compile burst-oriented VIRTIO PMD driver
#
CONFIG_RTE_LIBRTE_VIRTIO_PMD=y
+CONFIG_RTE_LIBRTE_VIRTIO_LINK_SPEED=10000
CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_RX=n
CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_TX=n
CONFIG_RTE_LIBRTE_VIRTIO_DEBUG_DUMP=n
diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c
index 46f01a7f4..38eaa5955 100644
--- a/drivers/net/vhost/rte_eth_vhost.c
+++ b/drivers/net/vhost/rte_eth_vhost.c
@@ -115,7 +115,7 @@ static struct internal_list_head internal_list =
static pthread_mutex_t internal_list_lock = PTHREAD_MUTEX_INITIALIZER;
static struct rte_eth_link pmd_link = {
- .link_speed = 10000,
+ .link_speed = RTE_LIBRTE_VIRTIO_LINK_SPEED,
.link_duplex = ETH_LINK_FULL_DUPLEX,
.link_status = ETH_LINK_DOWN
};
diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 044eb10a7..948091cc2 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -2371,7 +2371,7 @@ virtio_dev_link_update(struct rte_eth_dev *dev, __rte_unused int wait_to_complet
memset(&link, 0, sizeof(link));
link.link_duplex = ETH_LINK_FULL_DUPLEX;
- link.link_speed = ETH_SPEED_NUM_10G;
+ link.link_speed = RTE_LIBRTE_VIRTIO_LINK_SPEED;
link.link_autoneg = ETH_LINK_FIXED;
if (!hw->started) {
@@ -2426,9 +2426,21 @@ virtio_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
{
uint64_t tso_mask, host_features;
struct virtio_hw *hw = dev->data->dev_private;
-
- dev_info->speed_capa = ETH_LINK_SPEED_10G; /* fake value */
-
+#if RTE_LIBRTE_VIRTIO_LINK_SPEED == ETH_LINK_SPEED_20G
+ dev_info->speed_capa = ETH_LINK_SPEED_20G;
+#elif RTE_LIBRTE_VIRTIO_LINK_SPEED == ETH_SPEED_NUM_25G
+ dev_info->speed_capa = ETH_LINK_SPEED_25G;
+#elif RTE_LIBRTE_VIRTIO_LINK_SPEED == ETH_SPEED_NUM_40G
+ dev_info->speed_capa = ETH_LINK_SPEED_40G;
+#elif RTE_LIBRTE_VIRTIO_LINK_SPEED == ETH_SPEED_NUM_50G
+ dev_info->speed_capa = ETH_LINK_SPEED_50G;
+#elif RTE_LIBRTE_VIRTIO_LINK_SPEED == ETH_SPEED_NUM_56G
+ dev_info->speed_capa = ETH_LINK_SPEED_56G;
+#elif RTE_LIBRTE_VIRTIO_LINK_SPEED == ETH_SPEED_NUM_100G
+ dev_info->speed_capa = ETH_LINK_SPEED_100G;
+#else
+ dev_info->speed_capa = ETH_LINK_SPEED_10G;
+#endif
dev_info->max_rx_queues =
RTE_MIN(hw->max_queue_pairs, VIRTIO_MAX_RX_QUEUES);
dev_info->max_tx_queues =
--
2.17.1