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Diffstat (limited to 'vnet/vnet/pipeline.h')
| -rw-r--r-- | vnet/vnet/pipeline.h | 456 |
1 files changed, 0 insertions, 456 deletions
diff --git a/vnet/vnet/pipeline.h b/vnet/vnet/pipeline.h deleted file mode 100644 index a4aa5cf5277..00000000000 --- a/vnet/vnet/pipeline.h +++ /dev/null @@ -1,456 +0,0 @@ -/* - * vnet/pipeline.h: software pipeline - * - * Copyright (c) 2012 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. - */ - -/* - * Usage example. - * - * #define NSTAGES 3 or whatever - * - * <Define pipeline stages> - * - * #include <vnet/pipeline.h> - * - * static uword my_node_fn (vlib_main_t * vm, - * vlib_node_runtime_t * node, - * vlib_frame_t * frame) - * { - * return dispatch_pipeline (vm, node, frame); - * } - * - */ - -#ifndef NSTAGES -#error files which #include <vnet/pipeline.h> must define NSTAGES -#endif - -#ifndef STAGE_INLINE -#define STAGE_INLINE inline -#endif - -/* - * A prefetch stride of 2 is quasi-equivalent to doubling the number - * of stages with every other pipeline stage empty. - */ - -/* - * This is a typical first pipeline stage, which prefetches - * buffer metadata and the first line of pkt data. - * To use it: - * #define stage0 generic_stage0 - */ -static STAGE_INLINE void -generic_stage0 (vlib_main_t * vm, - vlib_node_runtime_t * node, u32 buffer_index) -{ - /* generic default stage 0 here */ - vlib_buffer_t *b = vlib_get_buffer (vm, buffer_index); - vlib_prefetch_buffer_header (b, STORE); - CLIB_PREFETCH (b->data, CLIB_CACHE_LINE_BYTES, STORE); -} - -#if NSTAGES == 2 - -static STAGE_INLINE uword -dispatch_pipeline (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 *from = vlib_frame_vector_args (frame); - u32 n_left_from, n_left_to_next, *to_next, next_index, next0; - int pi, pi_limit; - - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - pi_limit = clib_min (n_left_from, n_left_to_next); - - for (pi = 0; pi < NSTAGES - 1; pi++) - { - if (pi == pi_limit) - break; - stage0 (vm, node, from[pi]); - } - - for (; pi < pi_limit; pi++) - { - stage0 (vm, node, from[pi]); - to_next[0] = from[pi - 1]; - to_next++; - n_left_to_next--; - next0 = last_stage (vm, node, from[pi - 1]); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - from[pi - 1], next0); - n_left_from--; - if ((int) n_left_to_next < 0 && n_left_from > 0) - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - } - - for (; pi < (pi_limit + (NSTAGES - 1)); pi++) - { - if (((pi - 1) >= 0) && ((pi - 1) < pi_limit)) - { - to_next[0] = from[pi - 1]; - to_next++; - n_left_to_next--; - next0 = last_stage (vm, node, from[pi - 1]); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - from[pi - 1], next0); - n_left_from--; - if ((int) n_left_to_next < 0 && n_left_from > 0) - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - } - } - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - from += pi_limit; - } - return frame->n_vectors; -} -#endif - -#if NSTAGES == 3 -static STAGE_INLINE uword -dispatch_pipeline (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 *from = vlib_frame_vector_args (frame); - u32 n_left_from, n_left_to_next, *to_next, next_index, next0; - int pi, pi_limit; - - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - pi_limit = clib_min (n_left_from, n_left_to_next); - - for (pi = 0; pi < NSTAGES - 1; pi++) - { - if (pi == pi_limit) - break; - stage0 (vm, node, from[pi]); - if (pi - 1 >= 0) - stage1 (vm, node, from[pi - 1]); - } - - for (; pi < pi_limit; pi++) - { - stage0 (vm, node, from[pi]); - stage1 (vm, node, from[pi - 1]); - to_next[0] = from[pi - 2]; - to_next++; - n_left_to_next--; - next0 = last_stage (vm, node, from[pi - 2]); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - from[pi - 2], next0); - n_left_from--; - if ((int) n_left_to_next < 0 && n_left_from > 0) - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - } - - - for (; pi < (pi_limit + (NSTAGES - 1)); pi++) - { - if (((pi - 1) >= 0) && ((pi - 1) < pi_limit)) - stage1 (vm, node, from[pi - 1]); - if (((pi - 2) >= 0) && ((pi - 2) < pi_limit)) - { - to_next[0] = from[pi - 2]; - to_next++; - n_left_to_next--; - next0 = last_stage (vm, node, from[pi - 2]); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - from[pi - 2], next0); - n_left_from--; - if ((int) n_left_to_next < 0 && n_left_from > 0) - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - } - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - from += pi_limit; - } - return frame->n_vectors; -} -#endif - -#if NSTAGES == 4 -static STAGE_INLINE uword -dispatch_pipeline (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 *from = vlib_frame_vector_args (frame); - u32 n_left_from, n_left_to_next, *to_next, next_index, next0; - int pi, pi_limit; - - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - pi_limit = clib_min (n_left_from, n_left_to_next); - - for (pi = 0; pi < NSTAGES - 1; pi++) - { - if (pi == pi_limit) - break; - stage0 (vm, node, from[pi]); - if (pi - 1 >= 0) - stage1 (vm, node, from[pi - 1]); - if (pi - 2 >= 0) - stage2 (vm, node, from[pi - 2]); - } - - for (; pi < pi_limit; pi++) - { - stage0 (vm, node, from[pi]); - stage1 (vm, node, from[pi - 1]); - stage2 (vm, node, from[pi - 2]); - to_next[0] = from[pi - 3]; - to_next++; - n_left_to_next--; - next0 = last_stage (vm, node, from[pi - 3]); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - from[pi - 3], next0); - n_left_from--; - if ((int) n_left_to_next < 0 && n_left_from > 0) - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - } - - - for (; pi < (pi_limit + (NSTAGES - 1)); pi++) - { - if (((pi - 1) >= 0) && ((pi - 1) < pi_limit)) - stage1 (vm, node, from[pi - 1]); - if (((pi - 2) >= 0) && ((pi - 2) < pi_limit)) - stage2 (vm, node, from[pi - 2]); - if (((pi - 3) >= 0) && ((pi - 3) < pi_limit)) - { - to_next[0] = from[pi - 3]; - to_next++; - n_left_to_next--; - next0 = last_stage (vm, node, from[pi - 3]); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - from[pi - 3], next0); - n_left_from--; - if ((int) n_left_to_next < 0 && n_left_from > 0) - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - } - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - from += pi_limit; - } - return frame->n_vectors; -} -#endif - - -#if NSTAGES == 5 -static STAGE_INLINE uword -dispatch_pipeline (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 *from = vlib_frame_vector_args (frame); - u32 n_left_from, n_left_to_next, *to_next, next_index, next0; - int pi, pi_limit; - - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - pi_limit = clib_min (n_left_from, n_left_to_next); - - for (pi = 0; pi < NSTAGES - 1; pi++) - { - if (pi == pi_limit) - break; - stage0 (vm, node, from[pi]); - if (pi - 1 >= 0) - stage1 (vm, node, from[pi - 1]); - if (pi - 2 >= 0) - stage2 (vm, node, from[pi - 2]); - if (pi - 3 >= 0) - stage3 (vm, node, from[pi - 3]); - } - - for (; pi < pi_limit; pi++) - { - stage0 (vm, node, from[pi]); - stage1 (vm, node, from[pi - 1]); - stage2 (vm, node, from[pi - 2]); - stage3 (vm, node, from[pi - 3]); - to_next[0] = from[pi - 4]; - to_next++; - n_left_to_next--; - next0 = last_stage (vm, node, from[pi - 4]); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - from[pi - 4], next0); - n_left_from--; - if ((int) n_left_to_next < 0 && n_left_from > 0) - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - } - - - for (; pi < (pi_limit + (NSTAGES - 1)); pi++) - { - if (((pi - 1) >= 0) && ((pi - 1) < pi_limit)) - stage1 (vm, node, from[pi - 1]); - if (((pi - 2) >= 0) && ((pi - 2) < pi_limit)) - stage2 (vm, node, from[pi - 2]); - if (((pi - 3) >= 0) && ((pi - 3) < pi_limit)) - stage3 (vm, node, from[pi - 3]); - if (((pi - 4) >= 0) && ((pi - 4) < pi_limit)) - { - to_next[0] = from[pi - 4]; - to_next++; - n_left_to_next--; - next0 = last_stage (vm, node, from[pi - 4]); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - from[pi - 4], next0); - n_left_from--; - if ((int) n_left_to_next < 0 && n_left_from > 0) - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - } - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - from += pi_limit; - } - return frame->n_vectors; -} -#endif - -#if NSTAGES == 6 -static STAGE_INLINE uword -dispatch_pipeline (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - u32 *from = vlib_frame_vector_args (frame); - u32 n_left_from, n_left_to_next, *to_next, next_index, next0; - int pi, pi_limit; - - n_left_from = frame->n_vectors; - next_index = node->cached_next_index; - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - - pi_limit = clib_min (n_left_from, n_left_to_next); - - for (pi = 0; pi < NSTAGES - 1; pi++) - { - if (pi == pi_limit) - break; - stage0 (vm, node, from[pi]); - if (pi - 1 >= 0) - stage1 (vm, node, from[pi - 1]); - if (pi - 2 >= 0) - stage2 (vm, node, from[pi - 2]); - if (pi - 3 >= 0) - stage3 (vm, node, from[pi - 3]); - if (pi - 4 >= 0) - stage4 (vm, node, from[pi - 4]); - } - - for (; pi < pi_limit; pi++) - { - stage0 (vm, node, from[pi]); - stage1 (vm, node, from[pi - 1]); - stage2 (vm, node, from[pi - 2]); - stage3 (vm, node, from[pi - 3]); - stage4 (vm, node, from[pi - 4]); - to_next[0] = from[pi - 5]; - to_next++; - n_left_to_next--; - next0 = last_stage (vm, node, from[pi - 5]); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - from[pi - 5], next0); - n_left_from--; - if ((int) n_left_to_next < 0 && n_left_from > 0) - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - } - - - for (; pi < (pi_limit + (NSTAGES - 1)); pi++) - { - if (((pi - 1) >= 0) && ((pi - 1) < pi_limit)) - stage1 (vm, node, from[pi - 1]); - if (((pi - 2) >= 0) && ((pi - 2) < pi_limit)) - stage2 (vm, node, from[pi - 2]); - if (((pi - 3) >= 0) && ((pi - 3) < pi_limit)) - stage3 (vm, node, from[pi - 3]); - if (((pi - 4) >= 0) && ((pi - 4) < pi_limit)) - stage4 (vm, node, from[pi - 4]); - if (((pi - 5) >= 0) && ((pi - 5) < pi_limit)) - { - to_next[0] = from[pi - 5]; - to_next++; - n_left_to_next--; - next0 = last_stage (vm, node, from[pi - 5]); - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - from[pi - 5], next0); - n_left_from--; - if ((int) n_left_to_next < 0 && n_left_from > 0) - vlib_get_next_frame (vm, node, next_index, to_next, - n_left_to_next); - } - } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); - from += pi_limit; - } - return frame->n_vectors; -} -#endif - -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |