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2017-06-02vhost: add debug vhost-user on | off CLISteven2-20/+59
Add runtime debug vhost-user on | off CLI to facilitate troubleshooting. This feature is needed to avoid recompiling the code to debug vhost issues. The debugging messages should not be on the data path to avoid performance hit. Change-Id: I4c40f65dbb222557cba3fb8706fa3b7b62eec95f Signed-off-by: Steven <sluong@cisco.com>
2017-05-22vhost: migrate to use device infra for worker thread assignment, rx-mode.Steven3-484/+316
and add adaptive mode support to receive queue - Migrate vhost to use device infra which does the interface/queue to worker thread assignment. - Retire vhost thread CLI and corresponding code which assigns interface/queue to worker thread. set interface placement should be used instead to customize the interface/queue to worker thread assignment. - Retire vhost interrupt/polling option when creating vhost-user interface. Instead, set interface rx-mode should be used. - Add code in vnet_device_input_unassign_thread to change the node state to interrupt if the last polling interface has left the worker thread for the device of the corresponding interface/queue. - Add adaptive mode support. The node state is set to interrupt initially. When the scheduler detects a burst of traffic, it switches the input node to polling. Then we inform the device that we don't need interrupt notification. When the traffic subsides, the scheduler switches the input node back to interrupt. Then we immediately tell the driver that we want interrupt notification again. - Remove some duplicate code in vlib/main.c Change-Id: Id19bb1b9e50e6521c6464f470f5825c26924d3a8 Signed-off-by: Steven <sluong@cisco.com>
2017-05-20vhost: buffers leak and interface disable upon vring descriptor out of mmapSteven1-16/+9
When processing a vring descriptor which is outside of mmap, we disable the interface and spit a message to shut/no shut the interface. This is not practical as application using vhost cannot constantly checking the logs and do the recovery. The proposed fix is to log an error, like other errors that we encounter. The other bug is buffer leak in the function rewind. At the end of the while loop when b_current != b_head, we still have to give back 1 more buffer or add 1 to rx_buffers_len. Change-Id: I68c0b24f070e644cd8878f42272a7b518f14393f Signed-off-by: Steven <sluong@cisco.com>
2017-05-17vhost: bad packet assembled from descriptor chainingSteven1-1/+2
When the descriptor is chained via multiple parts, vhost is supposed to reassemble the different parts to form a packet prior to passing the packet to the next input node. However, bad packet was seen, having bad ethertype, source, and destination mac addresses. The problem was due to the destination pointer not being incremented as each chain is processed. THe result was the first chain is copied to the beginning of the buffer, the next chain is copied, then the last chain is also copied to the beginning of the buffer. As a result, the ethertype, source and destination mac, etc, are being overwritten by the very last chain of the descriptor. Change-Id: I78f9a91de68c85574047912576dcc311d7597e21 Signed-off-by: Steven <sluong@cisco.com>
2017-05-09Fix remaining 32-bit compile issuesDamjan Marion1-1/+1
Change-Id: I9664214652229b663c3e3ba7406b4ede96bfb123 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-04-28vhost: Disallow duplicate path name for vhost interfaceSteven2-1/+37
When creating or modifying a vhost interface, verify if the path name already existed and reject the command. Change-Id: I8b2d33b77c847f774492874f7d194fa72c488479 Signed-off-by: Steven <sluong@cisco.com>
2017-04-26vhost: Fix mmap size calculationPierre Pfister1-3/+3
I had a bug where a requested size of 1G was resulting in an aligned size of '1G + 2M', resulting in an OOM error. Previous code was adding one huge page size when memory is already aligned. Change-Id: Idd3aa0e9b893fb3efccba6ae1c7161e26d3f9456 Signed-off-by: Pierre Pfister <ppfister@cisco.com>
2017-04-26vhost: core dump on quit with worker threadsSteven1-0/+2
Patch 6347 removed the socket file when the interface is deleted and when VPP process is exitting. The CLI for deleting the interface has builtin vlib_worker_thread_barrier_sync to prevent the worker threads from running. Unfortunately, the CLI quit does not have the builtin vlib_worker_thread_barrier_sync. As a result, it may cause the worker thread to crash. The fix is to add the vlib_worker_thread_barrier_sync in vhost_user_exit. Change-Id: I1eff81170e131098f1799662f0ab48d6fca3def7 Signed-off-by: Steven <sluong@cisco.com>
2017-04-25"autoreply" flag: autogenerate standard xxx_reply_t messagesDave Barach1-22/+2
Change-Id: I72298aaae7d172082ece3a8edea4217c11b28d79 Signed-off-by: Dave Barach <dave@barachs.net>
2017-04-24vhost: remove socket linked file when deleting vhost interfaceSteven1-9/+18
- Unlink the file created for the socket when deleting vhost interface if we are the server mode. - Remove all vhost interfaces when VPP process is exitting. Change-Id: Id9b676cd027bbd67b473bbd01901d1ecc4d8e6cb Signed-off-by: Steven <sluong@cisco.com>
2017-04-11vhost: interrupt mode enhancementsSteven2-34/+26
- Add cpu index to the vring structure for quick lookup - Reduce the code that needs to be protected by vlib_worker_thread_barrier_sync - Set minimum timer no less than 1 ms Change-Id: Iafef4bf6879a8efb350abf4e0f517e38f7ff7a8b Signed-off-by: Steven <sluong@cisco.com>
2017-04-06Use thread local storage for thread indexDamjan Marion1-62/+65
This patch deprecates stack-based thread identification, Also removes requirement that thread stacks are adjacent. Finally, possibly annoying for some folks, it renames all occurences of cpu_index and cpu_number with thread index. Using word "cpu" is misleading here as thread can be migrated ti different CPU, and also it is not related to linux cpu index. Change-Id: I68cdaf661e701d2336fc953dcb9978d10a70f7c1 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-03-29vhost: vhost-user component may become unusable with too many open files ↵Steven1-9/+20
(VPP-668) When the number of open files is reached in the system, vhost may encounter a failure in socket call and return from vhost-user-process. The return terminates all attempts of incoming socket connections in the future, even if the condition is reconciled. The fix is to not return from vhost-user-process, record the error in the interface, spit out the error, and retry the connection every 3 seconds. Change-Id: I806baedf13e8c9b73e7c7820c094240f39949950 Signed-off-by: Steven <sluong@cisco.com>
2017-03-26Rename "show interfaces" -> "show interface"Dave Barach1-1/+1
To line up with "show interface placement," recently added. Otherwise, "show int" refers only to "show interface placement," which tends to annoy the cash customers... Change-Id: Iea9e3681aeb051e2b0e1ecbf06706d98af9a3abf Signed-off-by: Dave Barach <dave@barachs.net>
2017-03-22vhost: support interrupt modeSteven2-22/+322
vhost currently supports only polling mode. This patch is to add interrupt mode. When the interface is configured for interrupt mode, our input node does not get called unless there is a packet in the vring. If a particular CPU has one interface configured for polling mode and another in interrupt, the input node is set to polling for that CPU. This diffs also includes two crashes in vlib's dispatch_node. One is included in https://gerrit.fd.io/r/#/c/5516. The other crash is in the ASSERT. The ASSERT can become true when the caller of dispatch_node is in a loop. The first call converted the node to polling. The second call thereafter will hit the ASSERT. Change-Id: If17b6d48b20d7d8605c6a161459828637173cd32 Signed-off-by: Steven <sluong@cisco.com>
2017-03-16vhost: wrong value return for VHOST_USER_VRING_GET_BASESteven1-4/+11
When the VM is migrated, the driver sends VHOST_USER_VRING_GET_BASE message to the device to get the vring offset. The device is supposed to shut down the vring, and return the current vring offset. What the code did was to shutdown the vring, initialize the vring, and return 0 to the driver. The fix is to first store last_avail_idx in the message and then close the vring. Change-Id: I432e9f50f36d89fe53a45e050edcf5e1218caf7a Signed-off-by: Steven <sluong@cisco.com>
2017-03-09vlib_mains == 0 special cases be goneDave Barach1-5/+4
Clean up spurious binary API client link dependency on libvlib.so, which managed to hide behind vlib_mains == 0 checks reached by VLIB_xxx_FUNCTION macros. Change-Id: I5df1f8ab07dca1944250e643ccf06e60a8462325 Signed-off-by: Dave Barach <dave@barachs.net>
2017-03-08vhost: binary API changes for interrupt modeSteven4-10/+41
Add operation_mode for create_vhost_user_if, modify_vhost_user_if, and sw_interface_vhost_user_details. Only polling mode is supported for these APIs. Other mode is rejected and gets VNET_API_ERROR_UNIMPLEMENTED error. Change-Id: I0596f4e2c087aa2b6f78eb3e0b63910b1859641e Signed-off-by: Steven <sluong@cisco.com>
2017-03-06features: take device-input buffer advance value directlyDamjan Marion1-1/+1
Change-Id: Ifac7d9134d03d79164ce6f06ae9413279bbaadb3 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-03-02Clean up binary api message handler registration issuesDave Barach1-9/+1
Removed a fair number of "BUG" message handlers, due to conflicts with actual message handlers in api_format.c. Vpp itself had no business receiving certain messages, up to the point where we started building in relevant code from vpp_api_test. Eliminated all but one duplicate registration complaint. That one needs attention from the vxlan team since the duplicated handlers have diverged. Change-Id: Iafce5429d2f906270643b4ea5f0130e20beb4d1d Signed-off-by: Dave Barach <dave@barachs.net>
2017-03-01dpdk: be a pluginDamjan Marion1-11/+0
Change-Id: I238258cdeb77035adc5e88903d824593d0a1da90 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-03-01devices: vnet_get_aggregate_rx_packets should not be dpdk specificDamjan Marion1-0/+2
Change-Id: I1152db4b7d1602653d7d8b2c6cb28cf5c526c4ca Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-02-22VPP-635: CLI Memory leak with invalid parameterBilly McFall1-18/+44
In the CLI parsing, below is a common pattern: /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "x")) x = 1; : else return clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); } unformat_free (line_input); The 'else' returns if an unknown string is encountered. There a memory leak because the 'unformat_free(line_input)' is not called. There is a large number of instances of this pattern. Replaced the previous pattern with: /* Get a line of input. */ if (!unformat_user (input, unformat_line_input, line_input)) return 0; while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) { if (unformat (line_input, "x")) x = 1; : else { error = clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); goto done: } } /* ...Remaining code... */ done: unformat_free (line_input); return error; } In multiple files, 'unformat_free (line_input);' was never called, so there was a memory leak whether an invalid string was entered or not. Also, there were multiple instance where: error = clib_error_return (0, "unknown input `%U'", format_unformat_error, line_input); used 'input' as the last parameter instead of 'line_input'. The result is that output did not contain the substring in error, instead just an empty string. Fixed all of those as well. There are a lot of file, and very mind numbing work, so tried to keep it to a pattern to avoid mistakes. Change-Id: I8902f0c32a47dd7fb3bb3471a89818571702f1d2 Signed-off-by: Billy McFall <bmcfall@redhat.com> Signed-off-by: Dave Barach <dave@barachs.net>
2017-02-14Fix is_server flag in vhost dump (VPP-562)Marek Gradzki1-0/+1
Change-Id: I5b308eb39ae770d58d1498d7fafa49b236b3f534 Signed-off-by: Marek Gradzki <mgradzki@cisco.com>
2017-02-14vhost-user: fix crash when descriptor points to unknown regionDamjan Marion1-1/+2
This happens only on when compiled for older microarchitectures, where BSF insutruction is used instead of TZCNT. BSF provides undefined result if operand is 0. Change-Id: I7a13350786a533428168595097ef01a560fde53b Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-02-03vhost-user: fix missing speculative enqueue unwindSteven1-0/+4
Running trex in a VM with a bad config, trex sent a bogus pack from the VM to the Virtual interface. It caused a crash. Change-Id: I64d0197b444265553ab4c24f21e6a962e89cb587 Signed-off-by: Steven <sluong@cisco.com>
2017-01-18Fix coverity warnings, VPP-608Dave Barach1-2/+6
Change-Id: Ib0144ba3a9a09971d3946c932e8fed6d5c1ad278 Signed-off-by: Dave Barach <dave@barachs.net>
2017-01-17Fix crash on deleting activated vhost-user - VPP-603Wojciech Dec1-3/+4
Vhost-user pool getting freed prematurely Change-Id: I952821ec85efa68923d09a643c70b6b309ea2574 Signed-off-by: Wojciech Dec <wdec@cisco.com>
2017-01-10VPP-585: vhost-user interface deletion leaks memory.Ole Troan1-0/+7
Change-Id: I69bbc447e1989adea40f052eac4550036b6e2e1e Signed-off-by: Ole Troan <ot@cisco.com>
2017-01-03VPP-574: fix VPP hang during security group configuration on a suspended VMAndrew Yourtchenko1-0/+4
The unix connect() in vhost-user driver in VPP is blocking, and a non-expedient accept() on the other side causes the entire VPP to hang. Solution: set the nonblocking flag for the socket fd before calling connect(), and set the socket back to blocking after the accept() succeeds. Change-Id: Ia5ee782037eeffabdad71db8241f476a048a4f6f Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
2017-01-03Fix crash on null vhost-user socket - VPP-573Wojciech Dec1-0/+5
Fix for VPP-573. Change-Id: If7d9690901efebf62fdf28219097153d98c79c0c Signed-off-by: Wojciech Dec <wdec@cisco.com>
2016-12-28Reorganize source tree to use single autotools instanceDamjan Marion5-0/+4078
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>