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path: root/src/vnet/devices/virtio/virtio.h
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2020-06-12virtio: interface type based improvementsMohsin Kazmi1-17/+26
Type: improvement Change-Id: I220ea6ab609e3c1628f5210be441d0d5e825a32c Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-05-04tap: refactor existing flagsMohsin Kazmi1-5/+4
Type: refactor This patch refactor the existing flags and also add a new flag for packet coalescing. Change-Id: Ic826e4c81313f26d87c475cdf666b06cbed60a3a Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-04-28tap: use one tap fd per rx queueAloys Augustin1-1/+1
This matches vhost queues to linux netdev queues and avoids random packet shuffling across vhost queues on rx. Change-Id: I9901689d361e440fb0b91c9fbaf8124ce525b316 Type: fix Signed-off-by: Aloys Augustin <aloaugus@cisco.com>
2020-04-17tap: add initial support for tunMohsin Kazmi1-3/+9
Type: feature Change-Id: I699a01ac925fe5c475a36032edb7018618bb4dd4 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-03-21virtio: fix the out of order descriptors in txMohsin Kazmi1-0/+1
Type: fix Some vhost-backends give used descriptors back in out-of-order. This patch fixes the native virtio to handle out-of-order descriptors. Change-Id: I57323303349f6a385e412ee22772ab979ae8edbf Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-01-08virtio: split gso and checksum offload functionalityMohsin Kazmi1-0/+1
Type: refactor Change-Id: I897e36bd5db593b417c2bac9f739bc51cf45bc08 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-11-20tap: multiqueue supportDamjan Marion1-10/+4
Type: feature Change-Id: I7dcc8c6911d02729b3bda1b3a21a211c82c3b949 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-11-14virtio: refactor virtio-pci loggingDamjan Marion1-1/+24
Type: refactor Change-Id: I34306c1206b2bf5f521be6c6b78074ccf9259a08 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-10-30docs: devices-- add FEATURES.yamlPaul Vinciguerra1-1/+1
Type: docs Change-Id: I039ba9ad5385452b202366fba0b367506a21ea4f Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2019-09-06tap: revert clean-up when linux will delete the tap interfaceMohsin Kazmi1-1/+0
Type: fix Ticket: VPP-1766 revert e4ac48e792f4eebfce296cfde844ee73b1abd62f Change-Id: I03feea4008a47859d570ad8d1d08ff3f30d139ef Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com> (cherry picked from commit 623a1b7053424b539a51faf866ab839d3da3f45b)
2019-06-20tap: add support to configure tap interface host MTU sizeMohsin Kazmi1-0/+1
This patch adds support to configure host mtu size using api, cli or startup.conf. Type: feature Change-Id: I8ab087d82dbe7dedc498825c1a3ea3fcb2cce030 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-05-28tap: crash in multi-thread environmentMohsin Kazmi1-1/+0
In tap tx routine, virtio_interface_tx_inline, there used to be an interface spinlock to ensure packets are processed in an orderly fashion clib_spinlock_lock_if_init (&vif->lockp); When virtio code was introduced in 19.04, that line is changed to clib_spinlock_lock_if_init (&vring->lockp); to accommodate multi-queues. Unfortunately, althrough the spinlock exists in the vring, it was never initialized for tap, only for virtio. As a result, many nasty things can happen when running tap interface in multi-thread environment. Crash is inevitable. The fix is to initialize vring->lockp for tap and remove vif->lockp as it is not used anymore. Change-Id: I82b15d3e9b0fb6add9b9ac49bf602a538946634a Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com> (cherry picked from commit c2c89782d34df0dc7197b18b042b4c2464a101ef)
2019-05-24Tap: Fix the indirect buffers allocation VPP-1660Mohsin Kazmi1-1/+0
Indirect buffers are used to store indirect descriptors to xmit big packets. This patch moves the indirect buffer allocation from interface creation to device node. Now it allocates or deallocates buffers during tx for chained buffers. Change-Id: I55cec208a2a7432e12fe9254a7f8ef84a9302bd5 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com> (cherry picked from commit 55203e745f5e3f1f6c4dbe99d6eab8dee4d13ea6)
2019-04-17tap: clean-up when linux will delete the tap interfaceMohsin Kazmi1-0/+1
When container is deleted which has tap interface attached, Linux also delete the tap interface leaving the VPP side of tap. This patch does a clean up job to remove that VPP side of tap interface. To produce the behavior: In VPP: create tap On linux: sudo ip netns add ns1 sudo ip link set dev tap0 netns ns1 sudo ip netns del ns1 Change-Id: Iaed1700073a9dc64e626c1d0c449f466c143f3ae Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-04-03virtio: Add support for multiqueueMohsin Kazmi1-6/+16
Change-Id: Id71ffa77e977651f219ac09d1feef334851209e1 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-02-19tap gso: experimental supportAndrew Yourtchenko1-0/+1
This commit adds a "gso" parameter to existing "create tap..." CLI, and a "no-gso" parameter for the compatibility with the future, when/if defaults change. It makes use of the lowest bit of the "tap_flags" field in the API call in order to allow creation of GSO interfaces via API as well. It does the necessary syscalls to enable the GSO and checksum offload support on the kernel side and sets two flags on the interface: virtio-specific virtio_if_t.gso_enabled, and vnet_hw_interface_t.flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO. The first one, if enabled, triggers the marking of the GSO-encapsulated packets on ingress with VNET_BUFFER_F_GSO flag, and setting vnet_buffer2(b)->gso_size to the desired L4 payload size. VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO determines the egress packet processing in interface-output for such packets: When the flag is set, they are sent out almost as usual (just taking care to set the vnet header for virtio). When the flag is not enabled (the case for most interfaces), the egress path performs the re-segmentation such that the L4 payload of the transmitted packets equals gso_size. The operations in the datapath are enabled only when there is at least one GSO-compatible interface in the system - this is done by tracking the count in interface_main.gso_interface_count. This way the impact of conditional checks for the setups that do not use GSO is minimized. "show tap" CLI shows the state of the GSO flag on the interface, and the total count of GSO-enabled interfaces (which is used to enable the GSO-related processing in the packet path). This commit lacks IPv6 extension header traversal support of any kind - the L4 payload is assumed to follow the IPv6 header. Also it performs the offloads only for TCP (TSO - TCP segmentation offload). The UDP fragmentation offload (UFO) is not part of it. For debug purposes it also adds the debug CLI: "set tap gso {<interface> | sw_if_index <sw_idx>} <enable|disable>" Change-Id: Ifd562db89adcc2208094b3d1032cee8c307aaef9 Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2019-02-06virtio: enable msix interrupt modeMohsin Kazmi1-3/+6
Change-Id: Idd560f3afde1dd03bc3d6fbb2070096146865f50 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-02-06virtio: Use new buffer optimizationMohsin Kazmi1-0/+3
Change-Id: Ifc98373371b967c49a75989eac415ddda1dcf15f Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-01-23virtio: Add support for loggingMohsin Kazmi1-0/+3
Change-Id: Ieadf0a97379ed8b17241e454895c4e5e195dc52f Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-01-21virtio: Native virtio driverMohsin Kazmi1-12/+73
Change-Id: Id7fccf2f805e578fb05032aeb2b649a74c3c0e56 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-01-08virtio: fix kick race issueDamjan Marion1-0/+11
Change-Id: I25b2a28513821bc5eab9ac6890a3964d412b0399 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-01-02Fixes for buliding for 32bit targets:David Johnson1-0/+1
* u32/u64/uword mismatches * pointer-to-int fixes * printf formatting issues * issues with incorrect "ULL" and related suffixes * structure alignment and padding issues Change-Id: I70b989007758755fe8211c074f651150680f60b4 Signed-off-by: David Johnson <davijoh3@cisco.com>
2018-02-19virtio: add missing tx lock when running multithreadedDamjan Marion1-0/+2
Change-Id: I373f429c53c6f66ad38322addcfaccddb7761392 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-02-06vlib: epoll on worker threadsDamjan Marion1-0/+2
This patch teaches worer threads to sleep and to be waken up by kernel if there is activity on file desctiptors assigned to that thread. It also adds counters to epoll file descriptors and new debug cli 'show unix file'. Change-Id: Iaf67869f4aa88ff5b0a08982e1c08474013107c4 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-01-16tapv2: deleting tap interface may leak buffers (VPP-1124)Steven1-1/+3
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> (cherry picked from commit d8a998e74b815dd3725dfcd80080e4e540940236)
2017-12-14tap_v2: include host-side parameters in the dump binary APIMilan Lenco1-0/+9
Change-Id: I097a738b96a304621520f1842dcac7dbf61a8e3f Signed-off-by: Milan Lenco <milan.lenco@pantheon.tech>
2017-12-08tapv2: multiple improvementsDamjan Marion1-1/+2
- 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>
2017-11-30virtio: fast TAP interfaces with vhost-net backendDamjan Marion1-0/+131
Change-Id: Ided667356d5c6fb9648eb34685aabd6b16a598b7 Signed-off-by: Damjan Marion <damarion@cisco.com> Signed-off-by: Steven Luong <sluong@cisco.com>