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2019-06-29devices: virtio pci leaking spinlockSteven Luong1-0/+1
Memory is dirt cheap. But there is no need to throw it away. Type: fix Change-Id: I155130ab3c435b1c04d7c0e9f54795b8de9383d9 Signed-off-by: Steven Luong <sluong@cisco.com>
2019-06-20tap: fix the total length of packet for stats byteMohsin Kazmi1-3/+3
Type: fix Fixes: 8389fb9 Change-Id: I31076db78507736631609146d4cca28597aca704 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-06-20tap: add support to configure tap interface host MTU sizeMohsin Kazmi2-0/+4
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 Kazmi2-1/+4
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)
2019-05-27virtio: Add gso support for native virtio driverMohsin Kazmi5-7/+77
Change-Id: I7b735f5a540e8c278bac88245acb3f8c041c49c0 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-05-24Tap: Fix the indirect buffers allocation VPP-1660Mohsin Kazmi4-48/+61
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)
2019-05-16init / exit function orderingDave Barach1-6/+6
The vlib init function subsystem now supports a mix of procedural and formally-specified ordering constraints. We should eliminate procedural knowledge wherever possible. The following schemes are *roughly* equivalent: static clib_error_t *init_runs_first (vlib_main_t *vm) { clib_error_t *error; ... do some stuff... if ((error = vlib_call_init_function (init_runs_next))) return error; ... } VLIB_INIT_FUNCTION (init_runs_first); and static clib_error_t *init_runs_first (vlib_main_t *vm) { ... do some stuff... } VLIB_INIT_FUNCTION (init_runs_first) = { .runs_before = VLIB_INITS("init_runs_next"), }; The first form will [most likely] call "init_runs_next" on the spot. The second form means that "init_runs_first" runs before "init_runs_next," possibly much earlier in the sequence. Please DO NOT construct sets of init functions where A before B actually means A *right before* B. It's not necessary - simply combine A and B - and it leads to hugely annoying debugging exercises when trying to switch from ad-hoc procedural ordering constraints to formal ordering constraints. Change-Id: I5e4353503bf43b4acb11a45fb33c79a5ade8426c Signed-off-by: Dave Barach <dave@barachs.net>
2019-05-06virtio: refactor ctrl queue supportMohsin Kazmi1-22/+32
Change-Id: Ifb16351f39e5eb2cd154e70a1c96243e4842e80d Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-05-01virtio: Fix virtio buffer allocationMohsin Kazmi1-1/+1
Change-Id: I0ffb468aef56f5fd223218a83425771595863666 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-05-01virtio: remove configurable queue size supportMohsin Kazmi5-41/+27
Native virtio device through legacy driver can't support configurable queue size. Change-Id: I76c446a071bef8a469873010325d830586aa84bd Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-04-25tap: Fix the indirect buffer allocationMohsin Kazmi1-1/+1
Change-Id: I73f76c25754f6fb14a49ae47b6404f3cbabbeeb5 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
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>
2019-04-10API: Fix shared memory only action handlers.Ole Troan2-47/+0
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>
2019-04-08fixing typosJim Thompson1-1/+1
Change-Id: I215e1e0208a073db80ec6f87695d734cf40fabe3 Signed-off-by: Jim Thompson <jim@netgate.com>
2019-04-08virtio: Fix the coverity warningsMohsin Kazmi1-6/+11
Change-Id: I7c6e4bf2abf08193e54a736510c07eeacd6aebe7 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-04-03virtio: Add support for multiqueueMohsin Kazmi6-76/+466
Change-Id: Id71ffa77e977651f219ac09d1feef334851209e1 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-03-15Revert "API: Cleanup APIs interface.api"Ole Trøan2-2/+4
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 Grajciar2-4/+2
Use of consistent API types for interface.api Change-Id: Ieb54cebb4ac96b432a3f0b41596718aa2f34885b Signed-off-by: Jakub Grajciar <jgrajcia@cisco.com>
2019-03-13vhost-user: restart vpp may cause vhost to crashSteven Luong1-1/+1
Fix a typo in vhost_user_rx_discard_packet which may cause txvq->last_avail_idx to go wild. Change-Id: Ifaeb58835dff9b7ea82c061442722f1dcaa5d9a4 Signed-off-by: Steven Luong <sluong@cisco.com> (cherry picked from commit 39382976701926c1f34191c1311829c15a53cb01)
2019-03-13deprecate VLIB_DEVICE_TX_FUNCTION_MULTIARCHFilip Tehlar1-7/+7
Change-Id: I8819bcb9e228e7a432f4a7b67b6107f984927cd4 Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
2019-03-04devices: migrate old MULTIARCH macros to VLIB_NODE_FNFilip Tehlar1-6/+3
Change-Id: I911fb3f1c6351b37580c5dbde6939a549431a92d Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
2019-02-23vhoat: potential crash in map_guest_mem using debug imageSteven Luong1-1/+14
map_guest_mem may be called from worker-thread/dataplane. It has a call to vlib_log and may crash inside vlib_log's ASSERT statement /* make sure we are running on the main thread to avoid use in dataplane code, for dataplane logging consider use of event-logger */ ASSERT (vlib_get_thread_index () == 0); The fix is to convert the vlib_log call in map_guest_map to event logger Change-Id: Iaaf6d86782aa8a18d25e0209f22dc31f04668d56 Signed-off-by: Steven Luong <sluong@cisco.com>
2019-02-22Add no-append flag to vlib_frame_tDamjan Marion1-0/+1
Change-Id: I01c4f5755d579282773ac227b0bc24f8ddbb2bd1 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-02-21vhost: VPP stalls with vhost performing control plane actionsSteven Luong3-214/+259
Symptom ------- With NDR traffic blasting at VPP, bringing up a new VM with vhost connection to VPP causes packet drops. I am able to recreate this problem easily using a simple setup like this. TREX-------------- switch ---- VPP |---------------| |-------| Cause ----- The reason for the packet drops is due to vhost holding onto the worker barrier lock for too long in vhost_user_socket_read(). There are quite a few of system calls inside the routine. At the end of the routine, it unconditionally calls vhost_user_update_iface_state() for all message types. vhost_user_update_iface_state() also unconditionally calls vhost_user_rx_thread_placement() and vhost_user_tx_thread_placement(). vhost_user_rx_thread_placement scraps out all existing cpu/queue mappings for the interface and creates brand new cpu/queue mappings for the interface. This process is very disruptive and very expensive. In my opinion, this area of code needs a makeover. Fixes ----- * vhost_user_socket_read() is rewritten that it should not hold onto the worker barrier lock for system calls, or at least minimize the need for doing it. * Remove the call to vhost_user_update_iface_state as a default route at the end of vhost_user_socket_read(). There is only a couple of message types which really need to call vhost_user_update_iface_state(). We put the call to those message types which need it. * Remove vhost_user_rx_thread_placement() and vhost_user_tx_thread_placement from vhost_user_update_iface_state(). There is no need to repetatively change the cpu/queue mappings. * vhost_user_rx_thread_placement() is actually quite expensive. It should be called only once per queue for the interface. There is no need to scrap the existing cpu/queue mappings and create new cpu/queue mappings when the additional queues becomes active/enable. * Change to create the cpu/queue mappings for the first RX when the interface is created. Dont remove the cpu/queue mapping when the interface is disconnected. Remove the cpu/queue mapping only when the interface is deleted. The create vhost user interface CLI also has some very expensive system calls if the command is entered with the optional keyword "server" As a bonus, This patch makes the create vhost user interface binary-api and CLI thread safe. Do the protection for the small amount of code which is thread unsafe. Change-Id: I4a19cbf7e9cc37ea01286169882e5603e6d7eb77 Signed-off-by: Steven Luong <sluong@cisco.com>
2019-02-19tap gso: experimental supportAndrew Yourtchenko4-7/+121
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>
2019-02-14Add -fno-common compile optionBenoît Ganne2-2/+2
-fno-common makes sure we do not have multiple declarations of the same global symbol across compilation units. It helps debug nasty linkage bugs by guaranteeing that all reference to a global symbol use the same underlying object. It also helps avoiding benign mistakes such as declaring enum as global objects instead of types in headers (hence the minor fixes scattered across the source). Change-Id: I55c16406dc54ff8a6860238b90ca990fa6b179f1 Signed-off-by: Benoît Ganne <bganne@cisco.com>
2019-02-09buffers: fix typoDamjan Marion2-5/+4
Change-Id: I4e836244409c98739a13092ee252542a2c5fe259 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-02-06buffers: make buffer data size configurable from startup configDamjan Marion2-3/+4
Example: buffers { default data-size 1536 } Change-Id: I5b4436850ca18025c9fdcfc7ed648c2c2732d660 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-02-06virtio: enable msix interrupt modeMohsin Kazmi4-44/+114
Change-Id: Idd560f3afde1dd03bc3d6fbb2070096146865f50 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-02-06virtio: Use new buffer optimizationMohsin Kazmi4-2/+23
Change-Id: Ifc98373371b967c49a75989eac415ddda1dcf15f Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-01-30virtio: fix the device order (legacy or modern)Mohsin Kazmi1-3/+3
Change-Id: I60f88d50f062b004e6dea487bd627d303d0a5e75 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-01-29virtio: Support legacy and transitional virtio devicesMohsin Kazmi1-3/+11
Change-Id: Ib1316482dd7b1ae3c27c7eeb55839ed8af9ca162 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-01-24virtio: Minor fixes and header cleanupMohsin Kazmi5-24/+7
Change-Id: I2e5fd45abcd07e9eda6184587889bdcd9613a159 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-01-23virtio: Add support for loggingMohsin Kazmi4-31/+97
Change-Id: Ieadf0a97379ed8b17241e454895c4e5e195dc52f Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-01-21virtio: Native virtio driverMohsin Kazmi9-67/+2049
Change-Id: Id7fccf2f805e578fb05032aeb2b649a74c3c0e56 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2019-01-08virtio: fix kick race issueDamjan Marion3-10/+29
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>
2019-01-01buffers: remove unused codeDamjan Marion1-3/+2
Change-Id: If2bbfbc52994f5de0879763e0b7a7864498debb6 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-11-23vhost-user: use memory store barrierDamjan Marion1-3/+3
Should be less expensive... Change-Id: I678a39e42a054bf5f6ef9c59d0fb93ff9719b964 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-11-23vhost-user: add missing inlinesDamjan Marion1-2/+2
Change-Id: I1ed39c4ee084b26faac8286d9729413311ba9508 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-11-23vhost-user: avoid global storage accessDamjan Marion1-26/+34
Change-Id: I9dbeff51d3ede6db3cd5a097623aa580e5e25042 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-11-23vhost-user: simplify input loopDamjan Marion1-181/+174
Change-Id: I6e6963882825e83d8da3a460be35c7349e107777 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-11-22vhost-user: hint ethernet-input about single sw_if_indexDamjan Marion1-1/+16
Change-Id: Ia495f8f50c43baf0d6eeb8e9ba04314ce277286f Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-11-22vhost-user: avoid per-packet feature arc lookupsDamjan Marion1-12/+18
Change-Id: If96f5a7c7e4b511cab3d57e5b57796aa516aff11 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-11-22vhost-user: fix input node runtime statsDamjan Marion1-2/+2
Change-Id: Idda43d1236889ef91d8c37faf98ae23a19de688c Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-11-20vhost-user: cleanupDamjan Marion2-65/+44
Change-Id: Ibf68423e9514b8e85cdf0a3e57ababd55dd4fcc4 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-11-14Remove c-11 memcpy checks from perf-critical codeDave Barach4-10/+10
Change-Id: Id4f37f5d4a03160572954a416efa1ef9b3d79ad1 Signed-off-by: Dave Barach <dave@barachs.net>
2018-11-13vlib rename vlib_frame_args(...) to vlib_frame_scalar_args(..)Damjan Marion2-3/+3
Typically we have scalar_size == 0, so it doesn't matter but vlib_frame_args was providing pointer to scalar frame data, not vector data. To avoid future confusion function is renamed to vlib_frame_scalar_args(...) Change-Id: I48b75523b46d487feea24f3f3cb10c528dde516f Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-11-06vhost: crash in vhost_user_tx_avx2Steven1-0/+6
(gdb) bt bt Backtrace stopped: previous frame inner to this frame (corrupt stack?) (gdb) frame 5 frame 5 293 if (PREDICT_FALSE (rxvq->last_avail_idx == rxvq->avail->idx)) (gdb) p *rxvq p *rxvq $3 = {cacheline0 = 0x7f290bcadd80 "\377\003", qsz_mask = 1023, last_avail_idx = 0, last_used_idx = 0, n_since_last_int = 0, desc = 0x0, avail = 0x0, used = 0x0, int_deadline = 0, started = 1 '\001', enabled = 1 '\001', log_used = 0 '\000', cacheline1 = 0x7f290bcaddc0 "\377\377\377\377\016", errfd = -1, callfd_idx = 14, kickfd_idx = 19, log_guest_addr = 5151049792, mode = 0} The crash is because we access the null pointer rxvq->avail, which is supposed to be derived from the mmap informed by the driver. We fixed a similar issue before in https://gerrit.fd.io/r/#/c/14545/ The reason was the driver ummaps the memory without doing the disconnect in SR-IOV environment. The fixed was applied to the RX path. Now it happens in the TX path. We just need to apply the same check in the TX path. Change-Id: I7b1dfc96797cb5b52845bc6cec09a8c5d4325280 Signed-off-by: Steven <sluong@cisco.com>
2018-11-05Enable atomic swap and store macro with acquire and release orderingSirshak Das1-2/+2
Add atomic swap and store macro with acquire and release ordering respectively. Variable in question is interupt_pending variable which is used as guard variable by input nodes to process the device queue. Atomic Swap is used with Acquire ordering as writes or reads following this in program order should not be reordered before the swap. Atomic Store is used with Release ordering, as post store the node is added to pending list. Change-Id: I1be49e91a15c58d0bf21ff5ba1bd37d5d7d12f7a Original-patch-by: Damjan Marion <damarion@cisco.com> Signed-off-by: Sirshak Das <sirshak.das@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Ola Liljedahl <ola.liljedahl@arm.com>