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From: Marvin Liu <yong.liu@intel.com>
To: maxime.coquelin@redhat.com, xiaolong.ye@intel.com, zhihong.wang@intel.com
Cc: dev@dpdk.org,
Marvin Liu <yong.liu@intel.com>
Date: Wed, 29 Apr 2020 15:28:17 +0800
Message-Id: <20200429072822.102745-5-yong.liu@intel.com>
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<20200429072822.102745-1-yong.liu@intel.com>
Subject: [dpdk-dev] [PATCH v12 4/9] net/virtio-user: add vectorized devarg
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Add new devarg for virtio user device vectorized path selection. By
default vectorized path is disabled.
Signed-off-by: Marvin Liu <yong.liu@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
diff --git a/doc/guides/nics/virtio.rst b/doc/guides/nics/virtio.rst
index a67774e91..fdd0790e0 100644
--- a/doc/guides/nics/virtio.rst
+++ b/doc/guides/nics/virtio.rst
@@ -424,6 +424,12 @@ Below devargs are supported by the virtio-user vdev:
rte_eth_link_get_nowait function.
(Default: 10000 (10G))
+#. ``vectorized``:
+
+ It is used to specify whether virtio device perfers to use vectorized path.
+ Afterwards, dependencies of vectorized path will be checked in path
+ election.
+ (Default: 0 (disabled))
Virtio paths Selection and Usage
--------------------------------
diff --git a/drivers/net/virtio/virtio_user_ethdev.c b/drivers/net/virtio/virtio_user_ethdev.c
index 150a8d987..40ad786cc 100644
--- a/drivers/net/virtio/virtio_user_ethdev.c
+++ b/drivers/net/virtio/virtio_user_ethdev.c
@@ -452,6 +452,8 @@ static const char *valid_args[] = {
VIRTIO_USER_ARG_PACKED_VQ,
#define VIRTIO_USER_ARG_SPEED "speed"
VIRTIO_USER_ARG_SPEED,
+#define VIRTIO_USER_ARG_VECTORIZED "vectorized"
+ VIRTIO_USER_ARG_VECTORIZED,
NULL
};
@@ -559,6 +561,7 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev)
uint64_t mrg_rxbuf = 1;
uint64_t in_order = 1;
uint64_t packed_vq = 0;
+ uint64_t vectorized = 0;
char *path = NULL;
char *ifname = NULL;
char *mac_addr = NULL;
@@ -675,6 +678,15 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev)
}
}
+ if (rte_kvargs_count(kvlist, VIRTIO_USER_ARG_VECTORIZED) == 1) {
+ if (rte_kvargs_process(kvlist, VIRTIO_USER_ARG_VECTORIZED,
+ &get_integer_arg, &vectorized) < 0) {
+ PMD_INIT_LOG(ERR, "error to parse %s",
+ VIRTIO_USER_ARG_VECTORIZED);
+ goto end;
+ }
+ }
+
if (queues > 1 && cq == 0) {
PMD_INIT_LOG(ERR, "multi-q requires ctrl-q");
goto end;
@@ -727,6 +739,9 @@ virtio_user_pmd_probe(struct rte_vdev_device *dev)
goto end;
}
+ if (vectorized)
+ hw->use_vec_rx = 1;
+
rte_eth_dev_probing_finish(eth_dev);
ret = 0;
@@ -785,4 +800,5 @@ RTE_PMD_REGISTER_PARAM_STRING(net_virtio_user,
"mrg_rxbuf=<0|1> "
"in_order=<0|1> "
"packed_vq=<0|1> "
- "speed=<int>");
+ "speed=<int> "
+ "vectorized=<0|1>");
--
2.17.1