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virtio_free_rx_buffers uses the wrong slot in the vring to get
the buffer index. It uses desc_next. It should be last_used_idx
which is the slot number for the first valid descriptor.
Change-Id: I6b62b794f06869fbffffce45430b8b2e37b1266c
Signed-off-by: Steven <sluong@cisco.com>
(cherry picked from commit 074f698be5c2e6afc9df776b56a366bc3f404d95)
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The following command sequences cause the crash:
create tap id 0 rx-ring-size 1024 tx-ring-size 1024
create tap id 1 rx-ring-size 1024 tx-ring-size 1024
set interface state tap0 up
set interface state tap1 up
delete tap tap0
delete tap tap1
create tap id 0 rx-ring-size 1024 tx-ring-size 1024
0: /home/sluong/vpp2/vpp/build-data/../src/vnet/interface_funcs.h:46
(vnet_get_hw_interface) assertion `! pool_is_free (vnm->interface_main.hw_interfaces, _e)' fails
The reason for the crash is because when the tap interface is deleted,
the code does not remove the entry from the device queue. But the interface
is deleted anyway from vnet_main.interface_main.hw_interfaces.
When an interface is created again, it may encounter
the deleted entry in the device queue and crash. Notice create and delete a
single entry does not cause a crash. Need to create and delete 2 interfaces
to create a "hole" in the device queue.
Change-Id: I42ce0b7943d73b3eab32a16751a0a3183de62d9f
Signed-off-by: Steven <sluong@cisco.com>
(cherry picked from commit 0b8567331c3edf8b6aee51c849b8391a2922d9ab)
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Change-Id: I373f429c53c6f66ad38322addcfaccddb7761392
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Buffers may be allocated for indirect descriptors by tx thread and
they are freed when tx thread is invoked in the next invocation.
This is to allow the recipient (kernel) to have a chance to process
them. But if the tap interface is deleted, the tx thread may not yet
be called to clean up the indirect descriptors' buffers. In that case,
we need to remove them without waiting for the tx thread to be called.
Failure to do so may cause buffers leak when the tap interface is deleted.
For the RX ring, leakage also exists for vring->buffers when the interface
is removed.
Change-Id: I3df313a0e60334776b19daf51a9f5bf20dfdc489
Signed-off-by: Steven <sluong@cisco.com>
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Change-Id: I097a738b96a304621520f1842dcac7dbf61a8e3f
Signed-off-by: Milan Lenco <milan.lenco@pantheon.tech>
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Change-Id: I565277eafbce3d4f59a7f0d497fca1c4fed3cfc8
Signed-off-by: Swarup Nayak <swarupnpvt@gmail.com>
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Change-Id: I1bbd3f6ece255edfd4ebf268ac60f79dce1d10e7
Signed-off-by: Damjan Marion <damarion@cisco.com>
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- change interface naming scheme
- rework netlink code
- add option to set link address, namespace
Change-Id: Icf667babb3077a07617b0b87c45c957e345cb4d1
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Change-Id: Ica1be5c75c83ac64c7063bfeff1f4d00702a00e1
Signed-off-by: Milan Lenco <milan.lenco@pantheon.tech>
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virtio backend stays in vnet/devices/virtio
Change-Id: Idbf04f1c645a809ed408670ba330662859fe9309
Signed-off-by: Damjan Marion <damarion@cisco.com>
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