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2019-08-01vppinfra: refactor clib_rwlock_t to use single condition variablejaszha031-24/+19
Previous implementation of clib_rwlock_t used two spinlocks: one writer lock, and one to guard the counter for the number of readers. This implementation uses a single condition variable rw_cnt which has the following properties: if a writer has the rwlock, rw_cnt = -1 if the rwlock is free, rw_cnt = 0 otherwise, rw_cnt > 0 and rw_cnt = number of readers rw_cnt will never be less than -1 Benchmarking: The results below are the cycle counts from test_rwlock.c, configured so that for 10000 iterations, 6 reader and 6 writer threads on separate cores are spawned such that each writer thread increments a global counter 10000 times in each iteration. For Taishan, 4 reader and 4 writer threads are spawned in each test. x86 Xeon old rwlock: 12.473e8, 11.655e8, 13.201e8, 11.347e8, 13.182e8 x86 Xeon new rwlock: 5.881e8, 5.796e8, 6.536e8, 5.540e8, 5.890e8 Aarch64 ThX2* old rwlock: 9.263e7, 8.933e7, 9.074e7, 8.979e7, 9.378e7 Aarch64 ThX2* new rwlock: 7.221e7, 8.107e7, 7.515e7, 7.672e7, 7.386e7 A72 old rwlock: 3.268e6, 3.200e6, 3.086e6, 3.176e6, 3.170e6 A72 new rwlock: 1.261e6, 1.288e6, 1.251e6, 1.229e6, 1.234e6 *ThunderX2 used additional gcc options "-march=armv8.1-a+crc+crypto+lse" Type: refactor Change-Id: I7c347d3037b36205ab532cbcb52a374c846eb275 Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
2019-08-01vppinfra: remove unused historical codeDave Barach3-375/+0
"timer.[ch]" used a signal handler to deliver timer callbacks. Without indulging in a set of sigprocmask(...) system calls, it would be unsafe to use the mechanism. Rather than wait for another developer to accidentally open this particular can of worms, best to remove the code. It's nothing more than an attractive nuisance at this point. Type: refactor Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: Ia3e7b00a389c302b466605dff0c1bf3566b8dbbd
2019-08-01vppinfra: make first bihash add thread-safeDave Barach2-7/+25
Type: fix Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: Ie37ff66faba79e3b8f46c7a704137f9ef2acc773
2019-08-01vppinfra: refactor clib_spinlock_t to use compare and swapjaszha032-2/+13
Tested performance of a CAS implementation (using __atomic_compare_exchange) against a TAS implementation (using __atomic_exchange) using test_spinlock.c and found some performance improvement. Generated assembly for CAS and TAS implementations show that TAS always executes with a load-store dependency, but CAS moves a branch condition between the load and store so that only a load occurs when the lock is free. Benchmarking: The results below are the cycle counts from test_spinlock.c, configured so that for 10000 iterations, 12 threads on separate cores are spawned, each of which increments a global counter 10000 times in each iteration. For A72, 8 threads are spawned in each test. x86 Xeon TAS: 7.333e8, 7.605e8, 7.535e8, 7.485e8, 7.321e8 x86 Xeon CAS: 5.842e8, 5.433e8, 5.389e8, 5.983e8, 5.552e8 Aarch64 ThX2* TAS: 9.852e7, 10.209e7, 9.190e7, 9.600e7, 9.224e7 Aarch64 ThX2* CAS: 7.640e7, 7.486e7, 7.425e7, 7.269e7, 7.534e7 A72 TAS: 7.289e6, 6.963e6, 7.208e6, 6.976e6, 7.200e6 A72 CAS: 1.695e6, 1.608e6, 1.600e6, 1.634e6, 1.746e6 *ThunderX2 used additional gcc options "-march=armv8.1-a+crc+crypto+lse" Type: refactor Change-Id: Ic5cd97991804f6b012707fad1a5d1a6edb96cd3d Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
2019-07-31vppinfra: added performance test for clib_rwlock_t (test_rwlock.c)jaszha032-0/+265
Spawns a uniform number of writer and reader threads across a number of cores where each writer thread increments a global variable a specified number of times, and the reader threads continually poll the global's value until the writers complete. Type: test Change-Id: I979c3734c6d03139d0802bff1846875d226f6fbb Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
2019-07-31vppinfra: refactor test_and_set spinlocks to use clib_spinlock_tjaszha031-0/+3
Spinlock performance improved when implemented with compare_and_exchange instead of test_and_set. All instances of test_and_set locks were refactored to use clib_spinlock_t when possible. Some locks e.g. ssvm synchronize between processes rather than threads, so they cannot directly use clib_spinlock_t. Type: refactor Change-Id: Ia16b5d4cd49209b2b57b8df6c94615c28b11bb60 Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
2019-07-31vppinfra: added lock performance test for clib_spinlock_t (test_spinlock.c)jaszha032-0/+207
Spawns a uniform number of threads across a number of cores where each thread increments a global variable a specified number of times. Type: test Change-Id: I12b3a37708a199c297d022348d99dbb0e8349a9f Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
2019-07-30vppinfra: refactor use of CLIB_MEMORY_BARRIER ()jaszha033-17/+8
All instances of test_and_set locks used the following sequence to release the locks: CLIB_MEMORY_BARRIER (); p->lock = 0; // p is a generic struct with a TAS lock Use clib_atomic_release to generate more efficient assembly code. Type: refactor Change-Id: Idca3a38b1cf43578108bdd1afe83b6ebc17a4c68 Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
2019-07-30vppinfra: conformed spinlocks to use CLIB_PAUSEjaszha032-2/+4
Modified test-and-set spin locks to call CLIB_PAUSE () when spinning for code consistency. Decreases the memory bandwidth consumed. Type: fix Change-Id: I1cca4f87f44f23f257c7a35466cd2e7767072f51 Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
2019-07-26session: separate ctrl, new and old eventsFlorin Coras1-0/+38
Type: feature Change-Id: I5e030b23943c012d8191ff657165055d33ec87a2 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-07-25vppinfra: fix coverity warning in mpcap.cDave Barach1-5/+14
Type: fix Ticket: VPP-1649 Change-Id: Ief77ec8d5f06bfcc63af6454c4cd9979cf0ab49d Signed-off-by: Dave Barach <dave@barachs.net>
2019-07-24vppinfra: add mapped pcap file supportGary Boon3-0/+506
Type: feature Change-Id: Ic720d56a6f8901efde2a58519bc9aa553205a9a6 Signed-off-by: Gary Boon <gboon@cisco.com> Signed-off-by: Dave Barach <dave@barachs.net>
2019-07-19vppinfra: fix OOM check in bihashAndreas Schultz1-1/+1
The OOM check must consider the end of alloced arena and not the start when checking for overflow. Type: fix Change-Id: Ie83e653d0894199d2fa433a604a0fe0cee142338 Signed-off-by: Andreas Schultz <andreas.schultz@travelping.com>
2019-07-17session: use llist in session node evt handlingFlorin Coras1-2/+27
Type: refactor Change-Id: I24159e0a848f552b4e27acfb5fe6f2cd91b50a19 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-07-17vppinfra: elog: fix read overflow in string lookupBenoît Ganne1-5/+7
elog string hashtable use strlen() to determine string length for hashing, strings must be NULL-terminated for both inserts and lookups. Type: fix Fixes: 9c8ca8dd3197e40dfcb8bcecd95c10eeb56239ed Change-Id: I0680d39a9b89411055fd6adc89c9f253adfae32c Signed-off-by: Benoît Ganne <bganne@cisco.com>
2019-07-13vppinfra: add doubly linked listFlorin Coras2-0/+255
Type: feature Change-Id: I21511c1abea703da67f1a491e73342496275c498 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-07-11vppinfra: bihash add-but-do-not-overwrite semanticsDave Barach1-0/+7
If is_add=2, fail w/ return value -2 if the key exists instead of overwriting the (key,value) pair. Type: feature Change-Id: I00a3c194a381c68090369c31d6c6f9870cfe0a62 Signed-off-by: Dave Barach <dave@barachs.net>
2019-07-09vppinfra: allocate bihash virtual space on demandDave Barach4-11/+136
Reduces the vpp image virtual size by multiple gigabytes Add a "show bihash" command which displays configured and current virtual space in use by bihash tables. Modify the .py test framework to call "show bihash" on test tear-down Type: refactor Change-Id: Ifc1b7e2c43d29bbef645f6802fa29ff8ef09940c Signed-off-by: Dave Barach <dave@barachs.net>
2019-07-02api: fix coverity warningsDave Barach1-1/+1
New coverity toolset, new set of squawks to fix Ticket: VPP-1649 Type: fix Change-Id: I2a7e4c42b101c6c79c01b150b2523ce3d5d62354 Signed-off-by: Dave Barach <dave@barachs.net>
2019-06-28vppinfra: add dummy/noop f32/f64 endian swap fnsDave Barach1-0/+8
Makes life easier for binary API language bindings Type: fix Change-Id: Ib459274fda05153d01cbb7bc328a8407e3ee5027 Signed-off-by: Dave Barach <dave@barachs.net>
2019-06-26vppinfra: add u64x2_scatter/u32x4_scatterLijian.Zhang1-0/+16
Add u64x2_scatter/u32x4_scatter in vector_neon.h. u64x2_scatter/u32x4_scatter scatters data from SIMD register to scattered memory locations. Type: feature Change-Id: I298d5478c7ba6935ab7402a6d467c7ee00f17e9f Signed-off-by: Lijian Zhang <Lijian.Zhang@arm.com> Reviewed-by: Sirshak Das <Sirshak.Das@arm.com> Reviewed-by: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
2019-06-25vppinfra: fix tw_timer_first_expires_in_ticks for multiple wheelsAndreas Schultz1-0/+13
When only the fast in wheel is in use, the next expiring has to be within the fast_slot_bitmap. With mutliple wheels, the next expiring timer could be in the slow wheel. The timers on the slow wheel are only moved into the fast wheel when the fast wheel index reaches TW_SLOTS_PER_RING. When calculating the next expiring timer we therefor need to consider the timers on the slow wheel as well. When there are no more before reaching TW_SLOTS_PER_RING, instead of scanning the slow wheel, return the number of ticks until TW_SLOTS_PER_RING is reached. Type: fix Change-Id: I847031f8efc015c888d082f0b0c1bd500aa65704 Signed-off-by: Andreas Schultz <andreas.schultz@travelping.com> Signed-off-by: Dave Barach <dave@barachs.net>
2019-06-21vppinfra: add u64x2_gather/u32x4_gatherLijian.Zhang1-0/+18
Add u64x2_gather/u32x4_gather in vector_neon.h. u64x2_gather/u32x4_gather gathers data from scattered memory locations to a SIMD register. Type: feature Change-Id: I1dd27e38af28b9bed85143014c86197ee549fede Signed-off-by: Lijian Zhang <Lijian.Zhang@arm.com> Reviewed-by: Sirshak Das <Sirshak.Das@arm.com> Reviewed-by: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
2019-06-19vppinfra: fix rbtree node deleteFlorin Coras1-3/+7
Type:fix Make sure tnil color is black and that the right node colors are updated. Change-Id: Ibd9d7ea9438df4dab977202955957824723a865d Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-18vppinfra: rbtree custom insert/search/delFlorin Coras2-24/+99
Type: feature Add support for insert/search/del with custom compare function. Change-Id: Ibb740afc224d8adc29d3e1b51b46cdd738d1bd93 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-18stats: fix memory leakage when adding / deleting interfacesOle Troan2-0/+16
This fixes two leaks in registering errors in the stats segment. - The error name created by vlib_register_errors() was not freed. - Duplicate error names (when interface readded) was added to the vector. This fix also adds memory usage statistics for the statistics segment as /mem/statseg/{used, total} Change-Id: Ife98d5fc5baef5bdae426a5a1eef428af2b9ab8a Type: fix Signed-off-by: Ole Troan <ot@cisco.com>
2019-06-18vppinfra: add format_hex_bytes_no_wrapDamjan Marion2-0/+17
Type: feature Change-Id: I53e1f05b2b048925fca3b2f6b0499ff9c3e6ee12 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-06-16vlib: add "memory-trace stats-segment"Dave Barach5-21/+52
Type: feature Change-Id: Ie020fd7e2618284a63efbeb9895068f27c0fb9ab Signed-off-by: Dave Barach <dave@barachs.net>
2019-06-14vppinfra: optimize elog_stringDave Barach2-5/+31
Add a string hash to make sure that strings in the string table are unique. This optimization has been coded piecemeal in multiple places, we should have made the underlying function do the work years ago. Type: fix Change-Id: I5010fd4926b9b80ce3a168748f6de64e333ef498 Signed-off-by: Dave Barach <dave@barachs.net>
2019-06-05Switch atomic release API from __sync to __atomic builtin.Sirshak Das1-1/+1
__sync_lock_release switched to __atomic_store for code consitency, although both generate same instructions with current compilers. Change-Id: I37d320509e43a4c2b8a49af6346dc4a43ca2f535 Signed-off-by: Sirshak Das <sirshak.das@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com> Reviewed-by: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
2019-06-05Switch atomic test and set API from __sync to __atomic builtinSirshak Das1-1/+1
__sync_test_and_set uses full memory barriers for AArch64, __atomic_exchange(ACQUIRE) would use load acquire. Change-Id: Ifdf2481db3b9dde6c5842d75671402862adb6d81 Signed-off-by: Sirshak Das <sirshak.das@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com> Reviewed-by: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
2019-06-04elog: make elog_string() multi-thread safeSteven Luong1-0/+2
elog is supposed to be thread safe. Yet elog_string() is not. To fulfill that promise, let's make elog_string() thread safe to avoid surprises. Change-Id: Iab82faa7cb6719777a66c3ff14775e59a6a68a20 Signed-off-by: Steven Luong <sluong@cisco.com>
2019-05-27vppinfra: add pclmulqdq x86 cpuid flagDamjan Marion1-0/+1
Change-Id: If59fea9bb733f6a134d9cb5a9f61dfabf3441820 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-05-24Add callback multiplex supportDave Barach2-0/+112
Change-Id: Iddeb3a1b0e20706e72ec8f74dabc60b342f003ba Signed-off-by: Dave Barach <dave@barachs.net>
2019-05-17Add a debug-CLI leak-checkerDave Barach1-0/+2
leak-check { <any-debug-cli-command-and-args> } Hint: "set term history off" or you'll have to sort through a bunch of bogus leaks related to the debug cli history mechanism. Cleaned up a set of reported leaks in the "show interface" command. At some point, we thought about making a per-thread vlib_mains vector, but we never did that. Several interface-related CLI's maintained local static cache vectors. Not a bad idea, but not useful as things shook out. Removed the static vectors. Change-Id: I756bf2721a0d91993ecfded34c79da406f30a548 Signed-off-by: Dave Barach <dave@barachs.net>
2019-05-14Preallocate mhash key_tmps vectorDave Barach1-8/+1
Fix os_get_nthreads() so that it starts returning the correct answer as early as possible. Change-Id: Id5292262f2c3f521b07ffbe6a9f6748dcc4dcb7d Signed-off-by: Dave Barach <dave@barachs.net>
2019-05-13Fix typoIgor Mikhailov (imichail)1-1/+1
Change-Id: Ibc69195244bcc1e8e82c488fcd50b1eb2fcf81c0 Signed-off-by: Igor Mikhailov (imichail) <imichail@cisco.com>
2019-05-10zero-pad date string output.Paul Vinciguerra1-2/+2
2019/ 5/ 9 21:18:01:710 notice -> 2019/05/09 21:18:01:710 notice Change-Id: I8ed932a0d6f5e6ce29ab6428f0f01221d0a6ae34 Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2019-05-07bihash: Freeing up working_copy_lengths vectorVijayabhaskar Katamreddy1-1/+2
1)Freeing up working_copy_lengths vector 2)Passing vebososity level to fmt_fn Change-Id: I5e3f541e2f8cc0150105cc35835366f84937bb2e Signed-off-by: Vijayabhaskar Katamreddy <vkatamre@cisco.com>
2019-05-07Improve lcov reported code coverage statsDave Barach1-3/+0
Remove unused code from the vppinfra build Add a bihash test case Change-Id: Ia930309efa28620dd1c0d69aaec432e2d8bd962c Signed-off-by: Dave Barach <dave@barachs.net>
2019-05-07Add bihash statistics hookDave Barach10-5/+197
Example / unit-test in .../src/plugins/unittest/bihash_test.c Change-Id: I23fd0ba742d65291667a755965aee1a3d3477ca2 Signed-off-by: Dave Barach <dave@barachs.net>
2019-05-01Enable NEON instructions in memcpy_leLijian.Zhang2-1/+9
Neon version of memcpy_le gives better performance compared with memmove on aarch64 Change-Id: I44b487bb0795a6e70dd1e55bdde4a077773ec859 Signed-off-by: Lijian Zhang <Lijian.Zhang@arm.com> Reviewed-by: Sirshak Das <sirdas@arm.com>
2019-04-30elf: fix memcmp() overflowBenoît Ganne1-1/+1
name can be (and will be) smaller than section_name_start. Both name and section_name_start are NULL-terminated so we can use strcmp. Change-Id: Iec414810109f9267de20c25c0fe601df35daf89e Signed-off-by: Benoît Ganne <bganne@cisco.com>
2019-04-30vppinfra: fix buffer overflow in unformat_tokenBenoît Ganne1-2/+8
Change-Id: Ia60e4092c45c192002de064c362a9265bc9baeec Signed-off-by: Benoît Ganne <bganne@cisco.com>
2019-04-26svm: fifo segment support for chunk allocationFlorin Coras1-2/+2
Change-Id: Ie96706b4d8bcb32d2d5f065bc765f95f4e9369e7 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-04-24svm: fifo ooo reads/writes with multiple chunksFlorin Coras2-21/+21
Change-Id: If23a04623a7138c9f6c98ee9ecfa587396618a60 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-04-23vppinfra: fix one macro issue in clib_cpu_supports_aes()Zhiyong Yang1-1/+1
The macro for x86 platform is wrong, and the patch fixes it. Change-Id: I4f0ed254b177d6863fbe9113308c6a8b4478e0b2 Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
2019-04-19rbtree: add successor and predecessor functionsFlorin Coras2-0/+36
Change-Id: I6934beaf5c08bae2d4f0bd3a6bb811810407c1f9 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-04-17Use template-specific key compare fn when deleting recordsDave Barach1-2/+2
A simple memcmp won't work when comparing pointer-keys, such as those used by the bihash_vec8_8.h template. Change-Id: I77e59f3fd7f7740ef42908ace90ed4843e1c9ac7 Signed-off-by: Dave Barach <dave@barachs.net>
2019-04-17vppinfra: AVX512 interelaave, insert and permuteDamjan Marion1-0/+27
Change-Id: I26c704ec27b8f5431faef08156778f53ea454269 Signed-off-by: Damjan Marion <damarion@cisco.com>