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2019-03-13vhost: 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> (cherry picked from commit b0789106cb4f4c7ac529c02a5ff1ac346f0913dd)
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>
2019-02-22vhost: VPP stalls with vhost performing control plane actions [VPP-1572]Steven 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> (cherry picked from commit 67f935ec6eb9ec37b7d73029c5afa89cbf4a9aa2)
2019-02-22Add no-append flag to vlib_frame_tDamjan Marion1-0/+1
Change-Id: I01c4f5755d579282773ac227b0bc24f8ddbb2bd1 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-01-08virtio: 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>
2018-10-27virtio: remove the extra return callMohsin Kazmi1-2/+0
Change-Id: I6e43953a6ad1bd672e69d8377d18bd9614b469d8 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2018-10-23c11 safe string handling supportDave Barach6-12/+12
Change-Id: Ied34720ca5a6e6e717eea4e86003e854031b6eab Signed-off-by: Dave Barach <dave@barachs.net>
2018-10-19vppinfra: add atomic macros for __sync builtinsSirshak Das1-2/+2
This is first part of addition of atomic macros with only macros for __sync builtins. - Based on earlier patch by Damjan (https://gerrit.fd.io/r/#/c/10729/) Additionally - clib_atomic_release macro added and used in the absence of any memory barrier. - clib_atomic_bool_cmp_and_swap added Change-Id: Ie4e48c1e184a652018d1d0d87c4be80ddd180a3b 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> Reviewed-by: Steve Capper <steve.capper@arm.com>
2018-10-02vhost-user: add support for vlib_log APIJerome Tollet4-177/+129
Change-Id: I0af68f6b41d0024aa64b93a8b18e2d179bf939b0 Signed-off-by: Jerome Tollet <jtollet@cisco.com> Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-10-02vhost-user: Interface state updatesJuraj Sloboda4-16/+29
Fix inconsistencies between admin and link interface states Admin down should imply link down: link_up = admin_up && link_ready Change-Id: I4d668d82d035b5d2ae508727f34f1722a0c3e677 Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
2018-10-02vhost_user: Fix setting MTU using uninitialized variableJuraj Sloboda1-2/+1
Change-Id: I0caa5fd584e3785f237d08f3d3be23e9bfee7605 Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>
2018-09-20vhost: show vhost may display garbage after the interface nameSteven1-2/+3
DBGvpp# show vhost-user Virtio vhost-user interfaces Global: coalesce frames 32 time 1e-3 number of rx virtqueues in interrupt mode: 0 Interface: VirtualEthernet0/0/0�?x�D (ifindex 3) The fix is to use format_vnet_hw_if_index_name rather than hi->name. The former format the name with %v rather than %s Change-Id: If4d275e1eb249cf87b2d6b796b42f24769f9e3e3 Signed-off-by: Steven <sluong@cisco.com>
2018-09-20vhost-user: Add disable feature support in apiMohsin Kazmi2-2/+16
Two flags to disable mergable rx buffers and indirect descriptors are added to api. Change-Id: Iba0ee9c48d19dfc3d3420a3fdaf44a1a1d325e99 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2018-09-12vhost: Fix VPP crash when reloading VM with mixed-type ports [VPP-1406]Yichen Wang2-1/+15
When VM is having mixed type of vhost-user and SRIOV ports, QEMU (RedHat v2.10) will not send disconnect signal to VPP, and just gives the new memory region directly. VPP is not able to handle new memory region mapping without disconnect signal first, which will result in a SEGV. The fix will handle the VM reboot scenario without explict disconnect signal from QEMU. The fix is to invalidate the avail, desc, and used pointers in the txvq when the new memory regions are received. This is because these pointers are not valid anymore with the new memory regions. In the input node, check to make sure the avail pointer is valid and punt if not. Change-Id: Ieb8b427b202f4442a58907dab1661d63a03650de Signed-off-by: Yichen Wang <yicwang@cisco.com>
2018-08-13Multiarch handling in different constructor macrosDamjan Marion2-5/+0
This significantly reduces need for ... in multiarch code. Simply constructor macros will jost create static unused entry if CLIB_MARCH_VARIANT is defined and that will be optimized out by compiler. Change-Id: I17d1c4ac0c903adcfadaa4a07de1b854c7ab14ac Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-08-11Multiversioning: Device (tx) function constructorMohsin Kazmi1-18/+3
Change-Id: I39f87ca161c891fb22462a23188982fef7c3243f Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2018-07-11avoid using thread local storage for thread indexDamjan Marion3-3/+3
It is cheaper to get thread index from vlib_main_t if available... Change-Id: I4582e160d06d9d7fccdc54271912f0635da79b50 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-07-08vhost: Add multi-versioning supportMohsin Kazmi6-1534/+1667
It also refactors the vhost code which was in one big file vhost-user.c. Receive side code is in vhost_user_input.c and Transmit side code is in vhost_user_output.c Change-Id: I1b539b5008685889723e228265786a2a3e9f3a78 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2018-06-27gcc8 and Wstringop-truncationMarco Varlese1-2/+2
gcc8 introduced a new warning (Wstringop-truncation) which in our case is being treated as error. Disabling the warning globally might introduce bugs related to string truncation which are not desired by the developer (e.g. bug). Instead, this patch disables the warning only for those occurences which have been verified to be non-bugs but the desired behaviour as per developer will. Change-Id: I0f04ff6b4fad44061e80a65af633fd7e0148a0c5 Signed-off-by: Marco Varlese <marco.varlese@suse.com>
2018-06-11MTU: Software interface / Per-protocol MTU supportOle Troan1-2/+1
This patch separates setting of hardware interfaec and software interface MTU. Software MTU is L2 payload MTU (i.e. not including L2 header). Per-protocol MTU for IPv4, IPv6 and MPLS can also be set. Currently only IP4, IP6 are enabled in adjacency / rewrite code. Documentation in src/vnet/MTU.md Change-Id: Iee2fd6f0bbc8210748dd8e073ab9fab87d323690 Signed-off-by: Ole Troan <ot@cisco.com>
2018-05-28itf: Fix admin up down for AF_PACKET and vhost-userMohsin Kazmi1-6/+4
Change-Id: I84327197d59c72d0d046dd2cb4071bf74af6fc28 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2018-05-10vppinfra: use count_trailing_zeros in sparse_vec_indexDamjan Marion1-6/+6
It is much cheaper to use ctzll than to do shift,subtract and mask in likely case when we are looking for 1st set bit in the uword. Change-Id: I31954081571978878c7098bafad0c85a91755fa2 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-04-17vhost: show vhost-user <interface> may crash [VPP-1242]Steven1-0/+7
show vhost-user <interface> may cause a crash if interface is semi-bogus. Semi-bogus means it is a known vpp interface which has a hw_if_index, but it is bogus because it is not a vhost-user interface. The fix is to add a check to reject non vhost-user interface for the command. Change-Id: I63f1e8bfbf46f5ec4c30f9fb3546982b63cd7cc5 Signed-off-by: Steven <sluong@cisco.com>
2018-04-13Revert "MTU: Setting of MTU on software interface (instead of hardware ↵Damjan Marion1-2/+2
interface)" This reverts commit 70083ee74c3141bbefb185525315f1b34497dcaa. Reverting as this patch is causing following crash: 0: /home/damarion/cisco/vpp3/build-data/../src/vnet/devices/devices.h:131 (vnet_get_device_input_thread_index) assertion `queue_id < vec_len (hw->input_node_thread_index_by_queue)' fails Aborted Change-Id: Ie2a365032110b1f67be7a9d832885b9899813d39 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-04-13MTU: Setting of MTU on software interface (instead of hardware interface)Ole Troan1-2/+2
Change-Id: I98bd454a761a1032738a21edeb0fe847e801f901 Signed-off-by: Ole Troan <ot@cisco.com>
2018-03-30tapv2: Sporadic SIGABRT in ethernet_input [VPP-1183]Steven1-3/+3
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>
2018-02-19virtio: add missing tx lock when running multithreadedDamjan Marion2-0/+6
Change-Id: I373f429c53c6f66ad38322addcfaccddb7761392 Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-02-08virtio: reset vnet header on txDamjan Marion1-0/+3
Change-Id: Ib04a8787038fb536470a04d99fdc165102edfb5a Signed-off-by: Damjan Marion <damarion@cisco.com>
2018-02-08vhostuser: Fix vhostuser file descriptor leakHaiyang Tan1-4/+13
In the case that vhostuser server accepted more than one client connection, 'vui->clib_file_index' will be overwritten directly without release the possible existed resource, so file descriptor leak occurs Change-Id: I89d08133dae31a12a815df2631334dbf0aefeb1e Signed-off-by: Haiyang Tan <haiyang.tan.dev@gmail.com>
2018-02-07vhost: Added ARMV8 NEON version of function map_guest_mem()Nitin Saxena1-0/+69
(VPP-1085) The NEON implementation searches particular address in VHOST_MEMORY_MAX_NREGIONS regions. Searching two regions at a time. Change-Id: Icc3c6746bc98e3a1fa71424e51b64f62efbfdc74 Signed-off-by: Nitin Saxena <nitin.saxena@cavium.com>
2018-02-06vlib: epoll on worker threadsDamjan Marion2-0/+4
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>
2018-02-05vhost_user: code cleanupHaiyang Tan1-4/+4
1. Replace the magic number '-1' with MAP_FAILED 2. On x86 platform, QEMU uses vhostuser required the memory back-end is file based, the file could be tmpfs(4K page size) or hugetlbfs(2M or 1G page size) Change-Id: If1818cb6833728d641f68e4d4a3bc645e70f2ee6 Signed-off-by: Haiyang Tan <haiyang.tan.dev@gmail.com>
2018-01-30VPP-899: Run VPP under SELinuxBilly McFall1-13/+17
Add an SELinux profile such that VPP can run under SELinux on RPM based platforms. The SELinux Policy is currently only implemented for RPM packages, specifically, Fedora, CentOS and RHEL. Doxygen User Documentation has been included (selinux_doc.md). Once some discussion on file locations has completed (see vpp-devlist), updates to the Debug CLI documentation will also need to be updated. Additional changes: Patch Set 2: - Rework selinux_doc.md such that each line is only 80 characters instead of each sentence on a line. Made additonal minor chnages to the text. - Update vHost Debug CLI documentation to reflex new socket location. Cleaned up some text from when I originally wrote it, to better reflex proper use. - Update exec Debug CLI documentation to be more inline with suggested helptext, added text regarding recommended script file location. - For Debian builds, create the /var/log/vpp/ directory. I don't use Debian very much, so please pay extra attention to build-data/platforms.mk and build-root/deb/debian/.gitignore. - Per discussion on VPP call, changed the default log location to /var/log/vpp/vpp.log. - Changed the socket location for vHost in AutoConfig to /var/run/vpp/. Patch Set 3: - Update selinux_doc.md based on comments. Change-Id: I400520dc33f1ca51012d09ef8fe5a7b7b96c631e Signed-off-by: Billy McFall <bmcfall@redhat.com>
2018-01-23VPPAPIGEN: vppapigen replacement in Python PLY.Ole Troan1-1/+1
This is a version of the VPP API generator in Python PLY. It supports the existing language, and has a plugin architecture for generators. Currently C and JSON are supported. Changes: - vl_api_version to option version = "major.minor.patch" - enum support - Added error checking and reporting - import support (removed the C pre-processor) - services (tying request/reply together) Version: option version = "1.0.0"; Enum: enum colours { RED, BLUE = 50, }; define foo { vl_api_colours_t colours; }; Services: service { rpc foo returns foo_reply; rpc foo_dump returns stream foo_details; rpc want_stats returns want_stats_reply events ip4_counters, ip6_counters; }; Future planned features: - unions - bool, text - array support (including length) - proto3 output plugin - Refactor C/C++ generator as a plugin - Refactor Java generator as a plugin Change-Id: Ifa289966c790e1b1a8e2938a91e69331e3a58bdf Signed-off-by: Ole Troan <ot@cisco.com>
2018-01-21vhost_user: 'nregions' saves the actual number of mapped guest physical ↵Haiyang Tan1-1/+2
address area This patch fixed the VMA leak that if mapping one of guest physical address area get failed. Change-Id: I07b0b9a932209561d6ff2b2dd08a111ea5db2209 Signed-off-by: Haiyang Tan <haiyang.tan.dev@gmail.com>
2018-01-18vlib: add vlib_buffer_alloc_to_ring APIDamjan Marion2-11/+4
Change-Id: I4e2804754b443f5f41fb25eed8334908c4a70f84 Signed-off-by: Damjan Marion <damarion@cisco.com>