session: make sure segment sizes are page aligned - vpp

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author	Florin Coras <fcoras@cisco.com>	2018-07-12 01:45:13 -0700
committer	Damjan Marion <dmarion@me.com>	2018-07-17 09:01:46 +0000
commit	5da96a77a84ae5414debbc46d390464d51010113 (patch)
tree	5895f437c915ea7a5db7288afa2f2c68820ed0b8 /src/svm/queue.h
parent	208c29aac523231af2420a95ba7e5d361698780b (diff)

session: make sure segment sizes are page aligned

Change-Id: Ibbba75d069ca1bbf9e5a1b8bd2f405d32021c656 Signed-off-by: Florin Coras <fcoras@cisco.com>

Diffstat (limited to 'src/svm/queue.h')

0 files changed, 0 insertions, 0 deletions

/* * Copyright (c) 2015 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * main.h: VLIB main data structure * * Copyright (c) 2008 Eliot Dresselhaus * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #ifndef included_vlib_main_h #define included_vlib_main_h #include <vppinfra/elog.h> #include <vppinfra/format.h> #include <vppinfra/longjmp.h> #include <vppinfra/pool.h> #include <vppinfra/random_buffer.h> #include <vppinfra/time.h> #include <pthread.h> /* By default turn off node/error event logging. Override with -DVLIB_ELOG_MAIN_LOOP */ #ifndef VLIB_ELOG_MAIN_LOOP #define VLIB_ELOG_MAIN_LOOP 0 #endif typedef struct vlib_main_t { /* Instruction level timing state. */ clib_time_t clib_time; /* Time stamp of last node dispatch. */ u64 cpu_time_last_node_dispatch; /* Time stamp when main loop was entered (time 0). */ u64 cpu_time_main_loop_start; /* Incremented once for each main loop. */ u32 main_loop_count; /* Count of vectors processed this main loop. */ u32 main_loop_vectors_processed; u32 main_loop_nodes_processed; /* Circular buffer of input node vector counts. Indexed by low bits of (main_loop_count >> VLIB_LOG2_INPUT_VECTORS_PER_MAIN_LOOP). */ u32 vector_counts_per_main_loop[2]; u32 node_counts_per_main_loop[2]; /* Every so often we switch to the next counter. */ #define VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE 7 /* Jump target to exit main loop with given code. */ u32 main_loop_exit_set; clib_longjmp_t main_loop_exit; #define VLIB_MAIN_LOOP_EXIT_NONE 0 #define VLIB_MAIN_LOOP_EXIT_PANIC 1 /* Exit via CLI. */ #define VLIB_MAIN_LOOP_EXIT_CLI 2 /* Error marker to use when exiting main loop. */ clib_error_t *main_loop_error; /* Name for e.g. syslog. */ char *name; /* Start and size of CLIB heap. */ void *heap_base; uword heap_size; vlib_buffer_main_t *buffer_main; vlib_physmem_main_t physmem_main; /* Allocate/free buffer memory for DMA transfers, descriptor rings, etc. buffer memory is guaranteed to be cache-aligned. */ void *(*os_physmem_alloc_aligned) (vlib_physmem_main_t * pm, uword n_bytes, uword alignment); void (*os_physmem_free) (void *x); /* Node graph main structure. */ vlib_node_main_t node_main; /* Command line interface. */ vlib_cli_main_t cli_main; /* Packet trace buffer. */ vlib_trace_main_t trace_main; /* Error handling. */ vlib_error_main_t error_main; /* Punt packets to underlying operating system for when fast switching code does not know what to do. */ void (*os_punt_frame) (struct vlib_main_t * vm, struct vlib_node_runtime_t * node, vlib_frame_t * frame); /* Multicast distribution. Set to zero for MC disabled. */ mc_main_t *mc_main; /* Stream index to use for distribution when MC is enabled. */ u32 mc_stream_index; vlib_one_time_waiting_process_t *procs_waiting_for_mc_stream_join; /* Event logger. */ elog_main_t elog_main; /* Node call and return event types. */ elog_event_type_t *node_call_elog_event_types; elog_event_type_t *node_return_elog_event_types; elog_event_type_t *error_elog_event_types; /* Seed for random number generator. */ uword random_seed; /* Buffer of random data for various uses. */ clib_random_buffer_t random_buffer; /* Hash table to record which init functions have been called. */ uword *init_functions_called; /* to compare with node runtime */ u32 cpu_index; void **mbuf_alloc_list; /* List of init functions to call, setup by constructors */ _vlib_init_function_list_elt_t *init_function_registrations; _vlib_init_function_list_elt_t *main_loop_enter_function_registrations; _vlib_init_function_list_elt_t *main_loop_exit_function_registrations; _vlib_init_function_list_elt_t *api_init_function_registrations; vlib_config_function_runtime_t *config_function_registrations; mc_serialize_msg_t *mc_msg_registrations; /* mc_main is a pointer... */ /* control-plane API queue signal pending, length indication */ volatile u32 queue_signal_pending; volatile u32 api_queue_nonempty; void (*queue_signal_callback) (struct vlib_main_t *); u8 **argv; } vlib_main_t; /* Global main structure. */ extern vlib_main_t vlib_global_main; always_inline f64 vlib_time_now (vlib_main_t * vm) { return clib_time_now (&vm->clib_time); } always_inline f64 vlib_time_now_ticks (vlib_main_t * vm, u64 n) { return clib_time_now_internal (&vm->clib_time, n); } /* Busy wait for specified time. */ always_inline void vlib_time_wait (vlib_main_t * vm, f64 wait) { f64 t = vlib_time_now (vm); f64 limit = t + wait; while (t < limit) t = vlib_time_now (vm); } /* Time a piece of code. */ #define vlib_time_code(vm,body) \ do { \ f64 _t[2]; \ _t[0] = vlib_time_now (vm); \ do { body; } while (0); \ _t[1] = vlib_time_now (vm); \ clib_warning ("%.7e", _t[1] - _t[0]); \ } while (0) #define vlib_wait_with_timeout(vm,suspend_time,timeout_time,test) \ ({ \ uword __vlib_wait_with_timeout = 0; \ f64 __vlib_wait_time = 0; \ while (! (__vlib_wait_with_timeout = (test)) \ && __vlib_wait_time < (timeout_time)) \ { \ vlib_process_suspend (vm, suspend_time); \ __vlib_wait_time += suspend_time; \ } \ __vlib_wait_with_timeout; \ }) always_inline void vlib_panic_with_error (vlib_main_t * vm, clib_error_t * error) { vm->main_loop_error = error; clib_longjmp (&vm->main_loop_exit, VLIB_MAIN_LOOP_EXIT_PANIC); } #define vlib_panic_with_msg(vm,args...) \ vlib_panic_with_error (vm, clib_error_return (0, args)) always_inline void vlib_panic (vlib_main_t * vm) { vlib_panic_with_error (vm, 0); } always_inline u32 vlib_vector_input_stats_index (vlib_main_t * vm, word delta) { u32 i; i = vm->main_loop_count >> VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE; ASSERT (is_pow2 (ARRAY_LEN (vm->vector_counts_per_main_loop))); return (i + delta) & (ARRAY_LEN (vm->vector_counts_per_main_loop) - 1); } /* Estimate input rate based on previous 2^VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE samples. */ always_inline u32 vlib_last_vectors_per_main_loop (vlib_main_t * vm) { u32 i = vlib_vector_input_stats_index (vm, -1); u32 n = vm->vector_counts_per_main_loop[i]; return n >> VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE; } /* Total ave vector count per iteration of main loop. */ always_inline f64 vlib_last_vectors_per_main_loop_as_f64 (vlib_main_t * vm) { u32 i = vlib_vector_input_stats_index (vm, -1); u32 v = vm->vector_counts_per_main_loop[i]; return (f64) v / (f64) (1 << VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE); } /* Total ave vectors/node count per iteration of main loop. */ always_inline f64 vlib_last_vector_length_per_node (vlib_main_t * vm) { u32 i = vlib_vector_input_stats_index (vm, -1); u32 v = vm->vector_counts_per_main_loop[i]; u32 n = vm->node_counts_per_main_loop[i]; return n == 0 ? 0 : (f64) v / (f64) n; } extern u32 wraps; always_inline void vlib_increment_main_loop_counter (vlib_main_t * vm) { u32 i, c, n, v, is_wrap; c = vm->main_loop_count++; is_wrap = (c & pow2_mask (VLIB_LOG2_MAIN_LOOPS_PER_STATS_UPDATE)) == 0; if (is_wrap) wraps++; i = vlib_vector_input_stats_index (vm, /* delta */ is_wrap); v = is_wrap ? 0 : vm->vector_counts_per_main_loop[i]; n = is_wrap ? 0 : vm->node_counts_per_main_loop[i]; v += vm->main_loop_vectors_processed; n += vm->main_loop_nodes_processed; vm->main_loop_vectors_processed = 0; vm->main_loop_nodes_processed = 0; vm->vector_counts_per_main_loop[i] = v; vm->node_counts_per_main_loop[i] = n; } always_inline void vlib_set_queue_signal_callback (vlib_main_t * vm, void (*fp) (vlib_main_t *)) { vm->queue_signal_callback = fp; } /* Main routine. */ int vlib_main (vlib_main_t * vm, unformat_input_t * input); /* Thread stacks, for os_get_cpu_number */ extern u8 **vlib_thread_stacks; /* Number of thread stacks that the application needs */ u32 vlib_app_num_thread_stacks_needed (void) __attribute__ ((weak)); extern void vlib_node_sync_stats (vlib_main_t * vm, vlib_node_t * n); #endif /* included_vlib_main_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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