remove unnecessary null checks

Functions like free, rte_free, and rte_mempool_free
already handle NULL pointer so the checks here are not necessary.

Remove redundant NULL pointer checks before free

remove unnecessary null checks

Functions like free, rte_free, and rte_mempool_free
already handle NULL pointer so the checks here are not necessary.

Remove redundant NULL pointer checks before free functions
found by nullfree.cocci

Signed-off-by: Stephen Hemminger <[email protected]>

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net/virtio-user: fix resource leak on probing failure

When eth_virtio_dev_init is failed, the registered virtio user memory
event cb is not released and the backend created tap device is not
destroy

net/virtio-user: fix resource leak on probing failure

When eth_virtio_dev_init is failed, the registered virtio user memory
event cb is not released and the backend created tap device is not
destroyed. It would cause some residual tap device existed in the host
and creating a new vdev could be failed because the new virtio_user_dev
could use the same address pointer and register memory event cb to the
same address is not allowed.

Fixes: ca8326a94365 ("net/virtio_user: fix error management during init")
Cc: [email protected]

Signed-off-by: Harold Huang <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: revert forcing IOVA as VA mode for virtio-user

This patch removes the simplification in Virtio descriptors
handling, where their buffer addresses are IOVAs for Virtio
PCI devices, and VA

net/virtio: revert forcing IOVA as VA mode for virtio-user

This patch removes the simplification in Virtio descriptors
handling, where their buffer addresses are IOVAs for Virtio
PCI devices, and VA-only for Virtio-user devices, which
added a requirement on Virtio-user that it only supported
IOVA as VA.

This change introduced a regression for applications using
Virtio-user and other physical PMDs that require IOVA as PA
because they don't use an IOMMU.

This patch reverts to the old behaviour, but needed to be
reworked because of the refactoring that happened in v21.02.

Fixes: 17043a2909bb ("net/virtio: force IOVA as VA mode for virtio-user")
Cc: [email protected]

Reported-by: Olivier Matz <[email protected]>
Signed-off-by: Maxime Coquelin <[email protected]>
Tested-by: Olivier Matz <[email protected]>
Reviewed-by: David Marchand <[email protected]>

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net/virtio: remove blank lines in log

The macros PMD_*_LOG already include the line feed character.
Redundant \n are removed.

Signed-off-by: Thomas Monjalon <[email protected]>
Reviewed-by: David

net/virtio: remove blank lines in log

The macros PMD_*_LOG already include the line feed character.
Redundant \n are removed.

Signed-off-by: Thomas Monjalon <[email protected]>
Reviewed-by: David Marchand <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: add MAC device config getter and setter

This patch uses the new device config ops to get and set
the MAC address if supported.

If a valid MAC address is passed as devarg of the
Virtio-u

net/virtio: add MAC device config getter and setter

This patch uses the new device config ops to get and set
the MAC address if supported.

If a valid MAC address is passed as devarg of the
Virtio-user PMD, the driver will try to store it in the
device config space. Otherwise the one provided in
the device config space will be used, if available.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: keep device and frontend features separated

This patch is preliminary rework to add support for getting
and setting device's config space.

In order to get or set a device config such as

net/virtio: keep device and frontend features separated

This patch is preliminary rework to add support for getting
and setting device's config space.

In order to get or set a device config such as its MAC address,
we need to know whether the device itself support the feature,
or if it is emulated by the frontend.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: fix getline memory leakage

This patch fixes getline memory leakage when parsing dynamic major num.

Fixes: 7d62bf6f54ba ("net/virtio: introduce vhost-vDPA backend type")
Cc: stable@dpdk.

net/virtio: fix getline memory leakage

This patch fixes getline memory leakage when parsing dynamic major num.

Fixes: 7d62bf6f54ba ("net/virtio: introduce vhost-vDPA backend type")
Cc: [email protected]

Signed-off-by: Chengwen Feng <[email protected]>
Signed-off-by: Min Hu (Connor) <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: remove duplicated port ID from virtio-user

The private virtio_user_dev structure embeds a virtio_hw which itself
contains the ethdev port_id.
Make use of it and remove the duplicate port

net/virtio: remove duplicated port ID from virtio-user

The private virtio_user_dev structure embeds a virtio_hw which itself
contains the ethdev port_id.
Make use of it and remove the duplicate port_id field.

Signed-off-by: David Marchand <[email protected]>
Reviewed-by: Maxime Coquelin <[email protected]>

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net/virtio: remove reference to virtqueue in vrings

Vrings are part of the virtqueues, so we don't need
to have a pointer to it in Vrings descriptions.

Instead, let's just subtract from its offset

net/virtio: remove reference to virtqueue in vrings

Vrings are part of the virtqueues, so we don't need
to have a pointer to it in Vrings descriptions.

Instead, let's just subtract from its offset to
calculate virtqueue address.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>
Reviewed-by: David Marchand <[email protected]>
Tested-by: Balazs Nemeth <[email protected]>

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net/virtio: move vhost-user specifics to its backend

This patch moves all the Vhost-user backend specific
logic like Vhost FD, listen FD and interrupt handling
to the vhost-user backend implementati

net/virtio: move vhost-user specifics to its backend

This patch moves all the Vhost-user backend specific
logic like Vhost FD, listen FD and interrupt handling
to the vhost-user backend implementation.

In order to achieve that, new ops are created to update
the link status, disconnect and reconnect the server,
and fetch the link state interrupt FD.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: move protocol features to vhost-user

Since only protocol features are specific to Vhost-user
backend, this patch moves all related code to Vhost-user
file.

Signed-off-by: Maxime Coqueli

net/virtio: move protocol features to vhost-user

Since only protocol features are specific to Vhost-user
backend, this patch moves all related code to Vhost-user
file.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: make server mode blocking

This patch makes the Vhost-user backend server mode
blocking at init, waiting for the client connection.

The goal is to make the driver more reliable, as witho

net/virtio: make server mode blocking

This patch makes the Vhost-user backend server mode
blocking at init, waiting for the client connection.

The goal is to make the driver more reliable, as without
waiting for client connection, the Virtio driver has to
assume the Vhost-user backend will support all the
features it has advertized, which could lead to undefined
behaviour.

For example, without this patch, if the user enables packed
ring Virtio feature but the backend does not support it,
the ring initialized by the driver will not be compatible
with the backend.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: add virtio-user protocol features ops

This patch introduces new callbacks for getting
and setting Vhost-user protocol features.

Signed-off-by: Maxime Coquelin <[email protected]

net/virtio: add virtio-user protocol features ops

This patch introduces new callbacks for getting
and setting Vhost-user protocol features.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: add virtio-user features ops

This patch introduces new callbacks for getting
and setting Virtio features, and implements them
for the different backend types.

Signed-off-by: Maxime Coqu

net/virtio: add virtio-user features ops

This patch introduces new callbacks for getting
and setting Virtio features, and implements them
for the different backend types.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: move vring alignment to generic header

This patch moves vring alignment define to the generic
Virtio header.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Che

net/virtio: move vring alignment to generic header

This patch moves vring alignment define to the generic
Virtio header.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>
Reviewed-by: David Marchand <[email protected]>

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net/virtio: make interrupt handling more generic

This patch aims at isolating MSIX notion into PCI
layer.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: David Marchand <da

net/virtio: make interrupt handling more generic

This patch aims at isolating MSIX notion into PCI
layer.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: David Marchand <[email protected]>

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net/virtio: move config definitions to generic header

This patch moves config and status definitions from the PCI
header to the generic one.

Signed-off-by: Maxime Coquelin <[email protected]

net/virtio: move config definitions to generic header

This patch moves config and status definitions from the PCI
header to the generic one.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: move features definition to generic header

This patch moves all the Virtio definition to the generic
header. It also renames some helpers to no more reference
PCI.

Signed-off-by: Maxime

net/virtio: move features definition to generic header

This patch moves all the Virtio definition to the generic
header. It also renames some helpers to no more reference
PCI.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: introduce generic virtio header

This patch moves virtio_hw and virtio callbacks into
a generic virtio header, now that they have been
curated from PCI references.

Signed-off-by: Maxime

net/virtio: introduce generic virtio header

This patch moves virtio_hw and virtio callbacks into
a generic virtio header, now that they have been
curated from PCI references.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: remove bus type enum

Bus type awareness at the generic ethdev level is no
more needed as previous patches have made it bus-agnostic.

This patch removes it from struct virtio_hw.

Signed

net/virtio: remove bus type enum

Bus type awareness at the generic ethdev level is no
more needed as previous patches have made it bus-agnostic.

This patch removes it from struct virtio_hw.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>
Reviewed-by: David Marchand <[email protected]>

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net/virtio: validate features at bus level

This patch provides a new callback for the bus type
to validate negotiated features are compatible with it.

Only user for now is PCI modern bus type, whic

net/virtio: validate features at bus level

This patch provides a new callback for the bus type
to validate negotiated features are compatible with it.

Only user for now is PCI modern bus type, which implies
that the device supports Virtio 1.0+.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: add callback for device closing

This patch introduces a new callback for device closing,
making virtio_dev_close() bus-agnostic.

Signed-off-by: Maxime Coquelin <[email protected]

net/virtio: add callback for device closing

This patch introduces a new callback for device closing,
making virtio_dev_close() bus-agnostic.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>
Reviewed-by: David Marchand <[email protected]>

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net/virtio: force IOVA as VA mode for virtio-user

At least Vhost-user backend of Virtio-user PMD requires
IOVA as VA mode. Until now, it was implemented as a hack
by forcing to use mbuf's buf_addr f

net/virtio: force IOVA as VA mode for virtio-user

At least Vhost-user backend of Virtio-user PMD requires
IOVA as VA mode. Until now, it was implemented as a hack
by forcing to use mbuf's buf_addr field instead of buf_iova.

This patch removes all this logic and just fails probing
if IOVA as VA mode is not selected. It simplifies the
code overall, and removes some bus-specific logic from
generic virtio_ethdev.c.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: refactor virtio-user device

This patch moves the virtio_hw structure into the virtio_user_dev
structure, with the goal of making virtio_hw bus-agnostic.

Signed-off-by: Maxime Coquelin <

net/virtio: refactor virtio-user device

This patch moves the virtio_hw structure into the virtio_user_dev
structure, with the goal of making virtio_hw bus-agnostic.

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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net/virtio: introduce virtio bus type

This patch is preliminary work for introducing a bus layer
in Virtio PMD, in order to improve Virtio-user integration.

A new bus type is added to provide a uni

net/virtio: introduce virtio bus type

This patch is preliminary work for introducing a bus layer
in Virtio PMD, in order to improve Virtio-user integration.

A new bus type is added to provide a unified way to distinguish
which bus type is used (PCI modern, PCI legacy or Virtio-user).

Signed-off-by: Maxime Coquelin <[email protected]>
Reviewed-by: Chenbo Xia <[email protected]>

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