summaryrefslogtreecommitdiffstats
path: root/src/vnet/devices/tap
AgeCommit message (Collapse)AuthorFilesLines
2020-06-27tap: remove the bridge configurations for TUN interfaceMohsin Kazmi1-9/+10
Type: fix Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com> Change-Id: Ifeae641ec0aa7de74e33e582234505bf6e28ca87
2020-06-09tap: enable gso/csum offload for tunMohsin Kazmi1-7/+0
Type: improvement Change-Id: I5b9d5ea192776f14a45bf909acc4bef7793521e8 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-05-29docs: Minor updates to feature.yaml filesJohn DeNisco1-2/+3
Type: docs Signed-off-by: John DeNisco <jdenisco@cisco.com> Change-Id: Iba106d33d34766b91e46980e7237fbdfc3710b8b
2020-05-04misc: binary api fuzz test fixesDave Barach1-1/+1
Add a hook to src/vlibapi/api_shared.c to fuzz (screw up) binary API messages, e.g. by xoring random data into them before processing. We specifically exempt client connection messages, and inband debug CLI messages. We step over msg_id, client index, client context, and sw_if_index. Otherwise, "make test" vectors fail too rapidly to learn anything. The goal is to reduce the number of crashes caused to zero. We're fairly close with this patch. Add vl_msg_api_max_length(void *mp), which returns the maximum plausible length for a binary API message. Use it to hardern vl_api_from_api_to_new_vec(...) which takes an additional argument - message pointer - so it can verify that astr->length is sane. If it's not sane, return a u8 *vector of the form "insane astr->length nnnn\0". Verify array lengths in vl_api_dhcp6_send_client_message_t_handler(...) and vl_api_dhcp6_pd_send_client_message_t_handler(...). Add a fairly effective binary API fuzz hook to the unittest plugin, and modify the "make test" framework.py to pass "api-fuzz { on|off }" to enable API fuzzing: "make API_FUZZ=on TEST=xxx test-debug" or similar Type: improvement Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I0157267652a163c01553d5267620f719cc6c3bde
2020-05-04tap: refactor existing flagsMohsin Kazmi3-12/+26
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>
2020-05-01tap: implement sw_interface_tap_v2_dump filtering by sw_if_indexPaul Vinciguerra3-13/+12
Type: feature Change-Id: I6f607f383dc77a71e8712124f7613b38b4ac065a Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2020-04-30tap: allow deletion of tun interfaceMatthew Smith1-2/+5
Type: improvement tap_delete_if() returns early if the interface type is not VIRTIO_IF_TYPE_TAP. Allow VIRTIO_IF_TYPE_TUN also and take appropriate action for those interfaces. Change-Id: I196b6d6f3f5e1543a14d6be76fd879d44c9794fd Signed-off-by: Matthew Smith <mgsmith@netgate.com>
2020-04-29tap: fix missing "num-rx-queues" from cli helpMohsin Kazmi1-6/+6
Type: fix Change-Id: Ib09c7cebb6978b3adc09ac36cb32f7947b143e51 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-04-28tap: use one tap fd per rx queueAloys Augustin1-33/+59
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 Kazmi4-22/+118
Type: feature Change-Id: I699a01ac925fe5c475a36032edb7018618bb4dd4 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-03-23tap: fix the numa/queue for buffersMohsin Kazmi1-1/+1
Type: fix Change-Id: Ib320171708bebde6d1dae0b2c665f9bcfc9102db Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-03-05tap: add support for persistanceMohsin Kazmi6-39/+113
Type: feature Change-Id: I775f53531972447ebae0d69b9e2dfeee84d115e5 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-02-26api: improve api string safetyJakub Grajciar1-1/+1
- Remove vl_api_from_api_string to prevent use of not nul-terminated strings. - Rename vl_api_from_api_to_vec -> vl_api_from_api_to_new_vec to imply a new vector is created. NOT nul terminated. - Add vl_api_from_api_to_new_c_string. Returns nul terminated string in a new vector. - Add vl_api_c_string_to_api_string. Convert nul terminated string to vl_api_string_t - Add vl_api_vec_to_api_string. Convert NON nul terminated vector to vl_api_string_t Type: fix Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com> Change-Id: Iadd59b612c0d960a34ad0dd07a9d17f56435c6ea Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com>
2020-02-15tap: fix the default parameter for num_rx_queuesMohsin Kazmi1-9/+3
Type: fix Change-Id: I1a20fea56f1ba1fada7c7ce96ea333bf097b1273 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-01-30tap: fix host mtu configuration settingMohsin Kazmi1-12/+13
host mtu can't be set if tap interface is in namespace. This patch fixes this issue. Type: fix Change-Id: I63811c4b56c708fe708061a8afbaec41994f08ca Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-01-30tap: fix the host mac addressMohsin Kazmi2-20/+9
Tap configuration code sets the host mac address two time. This patch fixes it. Type: fix Change-Id: I7bebb9b7f25352a8a9a98bae6a0636757c0cea9c Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-01-08tap: split gso and checksum offload functionalityMohsin Kazmi4-17/+107
Type: refactor Change-Id: I0d4b79ef384c11c841576d264bfd8ccb21783e10 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-12-11devices: tap API cleanupJakub Grajciar5-93/+128
Use consistent API types. Type: fix Change-Id: I11cc7f6347b7a60e5fd41e54f0c7994e2d81199f Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com>
2019-12-10api: multiple connections per processDave Barach1-1/+1
Type: feature Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: I2272521d6e69edcd385ef684af6dd4eea5eaa953
2019-12-04gso: remove the interface countMohsin Kazmi1-7/+0
Type: refactor Change-Id: I51405b9d09fb6fb03d08569369fdd4e11c647908 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-11-25tap: fix coverity warning 205875Andrew Yourtchenko1-1/+6
check the return result from fcntl, and if error, behave the same way the expansion of _IOCTL macro does. Type: fix Change-Id: I6d537d1bdedae64470612aef64b46e07387fe84b Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2019-11-20tap: multiqueue supportDamjan Marion3-123/+246
Type: feature Change-Id: I7dcc8c6911d02729b3bda1b3a21a211c82c3b949 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-11-12tap: Move client registration check to topPaul Vinciguerra2-9/+14
Type: fix Change-Id: I33dc4cf7b6c69f74c7bf4971ce59442678b878ef Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2019-11-08tap: add check for vhost-net backendDamjan Marion1-0/+9
Type: feature Change-Id: I402f4c88dee70fbb0b3b61dc4e0a4034d24d8b56 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-11-08tap: fix cli parserDamjan Marion1-4/+5
Type: fix Change-Id: I38ee9efd23774cce7790565825527cca9ba6f200 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-11-06build: add yaml file linting to make checkstylePaul Vinciguerra1-1/+3
Type: feature fts and trex rely on yaml config files. Verify that they are valid, so comitters can catch errors early. Change-Id: Ide0bb276659119c59bdbbc8b8155e37562a648b8 Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2019-10-30docs: devices-- add FEATURES.yamlPaul Vinciguerra3-4/+14
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 Kazmi1-42/+0
Type: fix Ticket: VPP-1766 revert e4ac48e792f4eebfce296cfde844ee73b1abd62f Change-Id: I03feea4008a47859d570ad8d1d08ff3f30d139ef Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com> (cherry picked from commit 623a1b7053424b539a51faf866ab839d3da3f45b)
2019-09-03tap: fix tap interface not working on Arm issueLijian.Zhang1-1/+6
The VPP code tries to set all userspace memory in the table via IOCTL to VHOST_SET_MEM_TABLE. But on aarch64, the userspace address range is larger (48 bits) than that on x86 (47 bits). Below is an segment from /proc/[vpp]/maps. fffb41200000-fffb43a00000 rw-s 00000000 00:0e 532232 /anon_hugepage (deleted) Instead of setting all userspace memory space to vhost-net, will only set the address space reserved by pmalloc module during initialization. Type: fix Change-Id: I91cb35e990869b42094cf2cd0512593733d33677 Signed-off-by: Lijian Zhang <Lijian.Zhang@arm.com> Reviewed-by: Steve Capper <Steve.Capper@arm.com>
2019-07-30tap: fix segv when host-if-name is not givenMohsin Kazmi1-8/+10
Type: fix Fixes: c30d87e6139c64eceade54972715b402c625763d Change-Id: I86b606b18ff6a30709b7aff089fd5dd00103bd7f Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-07-24tap: print the interface name on cli when createdMohsin Kazmi2-0/+6
Type: feature Change-Id: If11f00574322c35c1780c31d5f7b47d30e083e35 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-07-23api: binary api cleanupDave Barach1-2/+4
Multiple API message handlers call vnet_get_sup_hw_interface(...) without checking the inbound sw_if_index. This can cause a pool_elt_at_index ASSERT in a debug image, and major disorder in a production image. Given that a number of places are coded as follows, add an "api_visible_or_null" variant of vnet_get_sup_hw_interface, which returns NULL given an invalid sw_if_index, or a hidden sw interface: - hw = vnet_get_sup_hw_interface (vnm, sw_if_index); + hw = vnet_get_sup_hw_interface_api_visible_or_null (vnm, sw_if_index); if (hw == NULL || memif_device_class.index != hw->dev_class_index) return clib_error_return (0, "not a memif interface"); Rename two existing xxx_safe functions -> xxx_or_null to make it obvious what they return. Type: fix Change-Id: I29996e8d0768fd9e0c5495bd91ff8bedcf2c5697 Signed-off-by: Dave Barach <dave@barachs.net>
2019-07-18tap: fix memory errors with create/delete APIBenoît Ganne1-7/+9
CLI allocates vectors consumed by tap_create_if(), whereas API pass null-terminated C-strings allocated on API segment. Do not try to be too clever here, and just allocate our own private copies. Type: fix Fixes: 8d879e1a6bac47240a232893e914815f781fd4bf Ticket: VPP-1724 Change-Id: I3ccdb8e0fcd4cb9be414af9f38cf6c33931a1db7 Signed-off-by: Benoît Ganne <bganne@cisco.com>
2019-06-28tap: fix memory errors in create/deleteBenoît Ganne1-1/+5
If the host interface name is not specified at creation, host_if_name was wrongly set to a stack-allocated variable. Make sure it always points to a heap allocated vector. At deletion time, we must free all allocated vectors. Type:fix Change-Id: I17751f38e95097998d51225fdccbf3ce3c365593 Signed-off-by: Benoît Ganne <bganne@cisco.com>
2019-06-20tap: add support to configure tap interface host MTU sizeMohsin Kazmi5-2/+73
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 Kazmi1-4/+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)
2019-04-17tap: clean-up when linux will delete the tap interfaceMohsin Kazmi1-0/+42
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>
2019-04-15tap: fix the crashMohsin Kazmi1-0/+3
Crash will happen when someone will try to setup a tap interface in host namespace without providing the host side of tap interface custom name. This patch fixes the problem by using the default name in this case. Change-Id: Ic1eaea5abd01bc6c766d0e0fcacae29ab7a7ec45 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-04-10API: Fix shared memory only action handlers.Ole Troan1-23/+1
Some API action handlers called vl_msg_ai_send_shmem() directly. That breaks Unix domain socket API transport. A couple (bond / vhost) also tried to send a sw_interface_event directly, but did not send the message to all that had registred interest. That scheme never worked correctly. Refactored and improved the interface event code. Change-Id: Idb90edfd8703c6ae593b36b4eeb4d3ed7da5c808 Signed-off-by: Ole Troan <ot@cisco.com>
2019-04-03virtio: Add support for multiqueueMohsin Kazmi1-12/+27
Change-Id: Id71ffa77e977651f219ac09d1feef334851209e1 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-03-28Add RDMA ibverb driver pluginBenoît Ganne1-10/+2
RDMA ibverb is a userspace API to efficiently rx/tx packets. This is an initial, unoptimized driver targeting Mellanox cards. Next steps should include batching, multiqueue and additional cards. Change-Id: I0309c7a543f75f2f9317eaf63ca502ac7a093ef9 Signed-off-by: Benoît Ganne <bganne@cisco.com>
2019-03-15Revert "API: Cleanup APIs interface.api"Ole Trøan1-1/+2
This reverts commit e63325e3ca03c847963863446345e6c80a2c0cfd. Allow time for CSIT to accommodate. Change-Id: I59435e4ab5e05e36a2796c3bf44889b5d4823cc2 Signed-off-by: ot@cisco.com
2019-03-15API: Cleanup APIs interface.apiJakub Grajciar1-2/+1
Use of consistent API types for interface.api Change-Id: Ieb54cebb4ac96b432a3f0b41596718aa2f34885b Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com>
2019-02-22tapv2: coverity strikes backSteven Luong1-5/+4
while https://gerrit.fd.io/r/#/c/16590/ fixed the leaked fd which coverity reported at that time, new coverity run reports simailar leaked fd in a different goto punt path. It would be nice if coverity reported both of them at the same time. Or perhaps it did and I just missed it. Anyway, the new fix is to put the close (fd) statement prior to the return of tap_create_if routine which should catch all goto's. Change-Id: I0a51ed3710e32d5d74c9cd9b5066a667153e2f9d Signed-off-by: Steven Luong <sluong@cisco.com>
2019-02-19tap gso: experimental supportAndrew Yourtchenko3-1/+127
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: Use new buffer optimizationMohsin Kazmi1-0/+1
Change-Id: Ifc98373371b967c49a75989eac415ddda1dcf15f Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-01-21virtio: Native virtio driverMohsin Kazmi2-106/+20
Change-Id: Id7fccf2f805e578fb05032aeb2b649a74c3c0e56 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-01-07tapv2: add "tap_flags" field to the TAPv2 interface APIAndrew Yourtchenko3-0/+8
Change-Id: I26f99d95f52c9fe107d17dcbbf5c6185523beade Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2018-12-22tapv2: coverity woeSteven1-2/+4
coverity complains about fd leaking inside the if statement because there is a goto which bypasses the statement close (fd). The fix is to close (fd) immediately after it is no longer used. Change-Id: Ic5035b07ec1f179ff3db77744843e47aa8067a3c Signed-off-by: Steven <sluong@cisco.com>
2018-10-23c11 safe string handling supportDave Barach2-8/+8
Change-Id: Ied34720ca5a6e6e717eea4e86003e854031b6eab Signed-off-by: Dave Barach <dave@barachs.net>