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net/vhost: add options for linear and external buffer

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Added vHost PMD arguments 'linear-buffer' and 'ext-buffer'
to configure  'RTE_VHOST_USER_LINEARBUF_SUPPORT' and
'RTE_VHOST_USER_EXTBUF_SUPPORT' flags in the vhost library

Signed-off-by: Sivaprasad Tummala <sivaprasad.tummala@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Sivaprasad Tummala 2020-02-26 10:00:34 +00:00 committed by Ferruh Yigit
parent 2a0ff4d554
commit f5f093d1c5
2 changed files with 41 additions and 1 deletions
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10
doc/guides/nics/vhost.rst
View File

@ -54,6 +54,16 @@ The user can specify below arguments in `--vdev` option.
It is used to enable tso support in vhost library.
(Default: 0 (disabled))
#. ``linear-buffer``:
It is used to enable linear buffer support in vhost library.
(Default: 0 (disabled))
#. ``ext-buffer``:
It is used to enable external buffer support in vhost library.
(Default: 0 (disabled))
Vhost PMD event handling
------------------------

32
drivers/net/vhost/rte_eth_vhost.c
View File

@ -32,6 +32,8 @@ enum {VIRTIO_RXQ, VIRTIO_TXQ, VIRTIO_QNUM};
#define ETH_VHOST_IOMMU_SUPPORT "iommu-support"
#define ETH_VHOST_POSTCOPY_SUPPORT "postcopy-support"
#define ETH_VHOST_VIRTIO_NET_F_HOST_TSO "tso"
#define ETH_VHOST_LINEAR_BUF "linear-buffer"
#define ETH_VHOST_EXT_BUF "ext-buffer"
#define VHOST_MAX_PKT_BURST 32
static const char *valid_arguments[] = {
@ -42,6 +44,8 @@ static const char *valid_arguments[] = {
ETH_VHOST_IOMMU_SUPPORT,
ETH_VHOST_POSTCOPY_SUPPORT,
ETH_VHOST_VIRTIO_NET_F_HOST_TSO,
ETH_VHOST_LINEAR_BUF,
ETH_VHOST_EXT_BUF,
NULL
};
@ -1391,6 +1395,8 @@ rte_pmd_vhost_probe(struct rte_vdev_device *dev)
int iommu_support = 0;
int postcopy_support = 0;
int tso = 0;
int linear_buf = 0;
int ext_buf = 0;
struct rte_eth_dev *eth_dev;
const char *name = rte_vdev_device_name(dev);
@ -1488,6 +1494,28 @@ rte_pmd_vhost_probe(struct rte_vdev_device *dev)
}
}
if (rte_kvargs_count(kvlist, ETH_VHOST_LINEAR_BUF) == 1) {
ret = rte_kvargs_process(kvlist,
ETH_VHOST_LINEAR_BUF,
&open_int, &linear_buf);
if (ret < 0)
goto out_free;
if (linear_buf == 1)
flags |= RTE_VHOST_USER_LINEARBUF_SUPPORT;
}
if (rte_kvargs_count(kvlist, ETH_VHOST_EXT_BUF) == 1) {
ret = rte_kvargs_process(kvlist,
ETH_VHOST_EXT_BUF,
&open_int, &ext_buf);
if (ret < 0)
goto out_free;
if (ext_buf == 1)
flags |= RTE_VHOST_USER_EXTBUF_SUPPORT;
}
if (dev->device.numa_node == SOCKET_ID_ANY)
dev->device.numa_node = rte_socket_id();
@ -1539,7 +1567,9 @@ RTE_PMD_REGISTER_PARAM_STRING(net_vhost,
"dequeue-zero-copy=<0|1> "
"iommu-support=<0|1> "
"postcopy-support=<0|1> "
"tso=<0|1>");
"tso=<0|1> "
"linear-buffer=<0|1> "
"ext-buffer=<0|1>");
RTE_INIT(vhost_init_log)
{