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path: root/src/vnet/devices/tap/tap.h
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2020-11-09tap: add function to set speedAlexander Chernavin1-1/+1
A plugin can set the speed on a host interface making it possible for host applications to be aware of the actual interface speed, not the one that the driver reports by default. With this change, add a function to set speed on a host interface. Type: feature Signed-off-by: Alexander Chernavin <achernavin@netgate.com> Change-Id: I259a52b736022bdd805e8d92dcd1bfd5c58f6f96
2020-11-05tap: allow change of carrier state on hostMatthew Smith1-0/+2
Type: feature Add a function to adjust the link state of the host side of a tap interface. If an application (e.g. route protocol daemons) running on the host uses netlink to monitor interface state, a plugin could use this function to communicate a loss of connectivity to the application by making the interface appear to go down. Requires a somewhat recent kernel. E.g. it does not have any effect on CentOS 7 but it works on CentOS 8. Change-Id: I677ee7889d2eb142e2395bea98f0b4d7e7e7f810 Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2020-09-02tap: add virtio 1.1 API flagMohsin Kazmi1-1/+3
Type: feature Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com> Change-Id: I3e00deb94943c545d1649865b2efdf7d51b90f4d
2020-08-17tap: add gro supportMohsin Kazmi1-1/+1
Type: feature Change-Id: I5868dd267aa26aa97aec5fd70e70c5956ac52277 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-05-04tap: refactor existing flagsMohsin Kazmi1-5/+15
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>
2020-04-17tap: add initial support for tunMohsin Kazmi1-0/+1
Type: feature Change-Id: I699a01ac925fe5c475a36032edb7018618bb4dd4 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-03-05tap: add support for persistanceMohsin Kazmi1-0/+2
Type: feature Change-Id: I775f53531972447ebae0d69b9e2dfeee84d115e5 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-01-08tap: split gso and checksum offload functionalityMohsin Kazmi1-0/+4
Type: refactor Change-Id: I0d4b79ef384c11c841576d264bfd8ccb21783e10 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-12-11devices: tap API cleanupJakub Grajciar1-5/+5
Use consistent API types. Type: fix Change-Id: I11cc7f6347b7a60e5fd41e54f0c7994e2d81199f Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com>
2019-11-20tap: multiqueue supportDamjan Marion1-0/+1
Type: feature Change-Id: I7dcc8c6911d02729b3bda1b3a21a211c82c3b949 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-06-20tap: add support to configure tap interface host MTU sizeMohsin Kazmi1-0/+6
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>
2019-02-19tap gso: experimental supportAndrew Yourtchenko1-0/+3
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>
2019-01-07tapv2: add "tap_flags" field to the TAPv2 interface APIAndrew Yourtchenko1-0/+2
Change-Id: I26f99d95f52c9fe107d17dcbbf5c6185523beade Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2018-04-27TAP memory leaks:Neale Ranns1-3/+3
1 - use bit-map to re-use ID values and thus VLIB nodes 2 - free vrings 3 - free hw_address on HW interface delete (a HW * struct is memset on pool_get) 4 - free temporary node names during TX node setup Change-Id: Id114c8bb9c844fd4ceb02fbbeb4b511ecfeb61ce Signed-off-by: Neale Ranns <nranns@cisco.com>
2018-04-17Add logging supportDamjan Marion1-0/+3
Change-Id: Ieac9cf50156dbbb4962411e900d59256441915ef Signed-off-by: Damjan Marion <damarion@cisco.com> Signed-off-by: Klement Sekera <ksekera@cisco.com>
2018-01-18tapv2: add option to set host-side default gwDamjan Marion1-0/+4
Change-Id: I76fd655ecd9445299b94b3b5af10e7b1588584e4 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-12-14tap_v2: include host-side parameters in the dump binary APIMilan Lenco1-2/+13
Change-Id: I097a738b96a304621520f1842dcac7dbf61a8e3f Signed-off-by: Milan Lenco <milan.lenco@pantheon.tech>
2017-12-08tapv2: multiple improvementsDamjan Marion1-3/+11
- 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>
2017-12-04tap_v2: move code to vnet/devices/tapDamjan Marion1-0/+63
virtio backend stays in vnet/devices/virtio Change-Id: Idbf04f1c645a809ed408670ba330662859fe9309 Signed-off-by: Damjan Marion <damarion@cisco.com>