From f3b274605280c2a0e6cd2e0b6383a4aab249a240 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Tue, 15 May 2018 19:51:38 +0200 Subject: Rewrite of l2-output node Change-Id: I8cbd1eac80ae4aeb173d02786e9ccf3b4877304d Signed-off-by: Damjan Marion --- src/vnet/l2/l2_output.c | 612 ++++++++++++++++++++++-------------------------- 1 file changed, 280 insertions(+), 332 deletions(-) (limited to 'src/vnet/l2') diff --git a/src/vnet/l2/l2_output.c b/src/vnet/l2/l2_output.c index 500fc5d0e95..306049bd0db 100644 --- a/src/vnet/l2/l2_output.c +++ b/src/vnet/l2/l2_output.c @@ -27,6 +27,7 @@ #include +#ifndef CLIB_MULTIARCH_VARIANT /* Feature graph node names */ static char *l2output_feat_names[] = { #define _(sym,name) name, @@ -64,6 +65,7 @@ format_l2_output_features (u8 * s, va_list * args) } l2output_main_t l2output_main; +#endif typedef struct { @@ -74,6 +76,7 @@ typedef struct u8 raw[12]; /* raw data */ } l2output_trace_t; +#ifndef CLIB_MULTIARCH_VARIANT /* packet trace format function */ static u8 * format_l2output_trace (u8 * s, va_list * args) @@ -100,6 +103,7 @@ static char *l2output_error_strings[] = { foreach_l2output_error #undef _ }; +#endif /** * Check for split horizon violations. @@ -108,395 +112,326 @@ static char *l2output_error_strings[] = { * split-horizon group as the input interface, except if the @c shg is 0 * in which case the check always passes. */ -static_always_inline u32 -split_horizon_violation (u8 shg1, u8 shg2) +static_always_inline void +split_horizon_violation (vlib_node_runtime_t * node, u8 shg, + vlib_buffer_t * b, u16 * next) { - if (PREDICT_TRUE (shg1 == 0)) - { - return 0; - } - else - { - return shg1 == shg2; - } + if (shg != vnet_buffer (b)->l2.shg) + return; + next[0] = L2OUTPUT_NEXT_DROP; + b->error = node->errors[L2OUTPUT_ERROR_SHG_DROP]; } -/** Determine the next L2 node based on the output feature bitmap */ static_always_inline void -l2_output_dispatch (vlib_buffer_t * b0, vlib_node_runtime_t * node, - u32 * cached_sw_if_index, u32 * cached_next_index, - u32 sw_if_index, u32 feature_bitmap, u32 * next0) +l2output_process_batch_inline (vlib_main_t * vm, vlib_node_runtime_t * node, + l2_output_config_t * config, + vlib_buffer_t ** b, i16 * cdo, u16 * next, + u32 n_left, int l2_efp, int l2_vtr, int l2_pbb, + int shg_set, int update_feature_bitmap) { - /* - * The output feature bitmap always have at least the L2 output bit set - * for a normal L2 interface (or 0 if the interface is changed from L2 - * to L3 mode). So if the feature bitmap is 0 or just have L2 output bits set, - * we know there is no more feature and will just output packets on interface. - * Otherwise, get the index of the next feature node. - */ - if (PREDICT_FALSE ((feature_bitmap & ~L2OUTPUT_FEAT_OUTPUT) != 0)) + while (n_left >= 8) { - /* Save bitmap for the next feature graph nodes */ - vnet_buffer (b0)->l2.feature_bitmap = feature_bitmap; + vlib_prefetch_buffer_header (b[4], LOAD); + vlib_prefetch_buffer_header (b[5], LOAD); + vlib_prefetch_buffer_header (b[6], LOAD); + vlib_prefetch_buffer_header (b[7], LOAD); - /* Determine the next node */ - *next0 = - feat_bitmap_get_next_node_index (l2output_main.l2_out_feat_next, - feature_bitmap); - } - else - { - /* - * There are no features. Send packet to TX node for sw_if_index0 - * This is a little tricky in that the output interface next node indexes - * are not precomputed at init time. - */ + /* prefetch eth headers only if we need to touch them */ + if (l2_vtr || l2_pbb || shg_set) + { + CLIB_PREFETCH (b[4]->data + cdo[4], CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (b[5]->data + cdo[5], CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (b[6]->data + cdo[6], CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (b[7]->data + cdo[7], CLIB_CACHE_LINE_BYTES, LOAD); + } - if (sw_if_index == *cached_sw_if_index) + if (update_feature_bitmap) { - /* We hit in the one-entry cache. Use it. */ - *next0 = *cached_next_index; + vnet_buffer (b[0])->l2.feature_bitmap = config->feature_bitmap; + vnet_buffer (b[1])->l2.feature_bitmap = config->feature_bitmap; + vnet_buffer (b[2])->l2.feature_bitmap = config->feature_bitmap; + vnet_buffer (b[3])->l2.feature_bitmap = config->feature_bitmap; } - else + + if (l2_vtr) { - /* Look up the output TX node for the sw_if_index */ - *next0 = vec_elt (l2output_main.output_node_index_vec, sw_if_index); + int i; + for (i = 0; i < 4; i++) + { + u32 failed1 = l2_efp && + l2_efp_filter_process (b[i], &(config->input_vtr)); + u32 failed2 = l2_vtr_process (b[i], &(config->output_vtr)); + if (PREDICT_FALSE (failed1 | failed2)) + { + next[i] = L2OUTPUT_NEXT_DROP; + if (failed2) + b[i]->error = node->errors[L2OUTPUT_ERROR_VTR_DROP]; + if (failed1) + b[i]->error = node->errors[L2OUTPUT_ERROR_EFP_DROP]; + } + } + } - if (PREDICT_FALSE (*next0 == L2OUTPUT_NEXT_DROP)) - b0->error = node->errors[L2OUTPUT_ERROR_MAPPING_DROP]; + if (l2_pbb) + { + int i; + for (i = 0; i < 4; i++) + if (l2_pbb_process (b[i], &(config->output_pbb_vtr))) + { + next[i] = L2OUTPUT_NEXT_DROP; + b[i]->error = node->errors[L2OUTPUT_ERROR_VTR_DROP]; + } + } - /* Update the one-entry cache */ - *cached_sw_if_index = sw_if_index; - *cached_next_index = *next0; + if (shg_set) + { + split_horizon_violation (node, config->shg, b[0], next); + split_horizon_violation (node, config->shg, b[1], next + 1); + split_horizon_violation (node, config->shg, b[2], next + 2); + split_horizon_violation (node, config->shg, b[3], next + 3); } + /* next */ + n_left -= 4; + b += 4; + next += 4; + cdo += 4; } -} -static_always_inline void -l2output_vtr (vlib_node_runtime_t * node, l2_output_config_t * config, - u32 feature_bitmap, vlib_buffer_t * b, u32 * next) -{ - if (PREDICT_FALSE (config->out_vtr_flag)) + while (n_left) { - /* Perform pre-vtr EFP filter check if configured */ - if (config->output_vtr.push_and_pop_bytes) - { - /* - * Perform output vlan tag rewrite and the pre-vtr EFP filter check. - * The EFP Filter only needs to be run if there is an output VTR - * configured. The flag for the post-vtr EFP Filter node is used - * to trigger the pre-vtr check as well. - */ - u32 failed1 = (feature_bitmap & L2OUTPUT_FEAT_EFP_FILTER) - && (l2_efp_filter_process (b, &(config->input_vtr))); - u32 failed2 = l2_vtr_process (b, &(config->output_vtr)); + if (update_feature_bitmap) + vnet_buffer (b[0])->l2.feature_bitmap = config->feature_bitmap; + if (l2_vtr) + { + u32 failed1 = l2_efp && + l2_efp_filter_process (b[0], &(config->input_vtr)); + u32 failed2 = l2_vtr_process (b[0], &(config->output_vtr)); if (PREDICT_FALSE (failed1 | failed2)) { *next = L2OUTPUT_NEXT_DROP; if (failed2) - { - b->error = node->errors[L2OUTPUT_ERROR_VTR_DROP]; - } + b[0]->error = node->errors[L2OUTPUT_ERROR_VTR_DROP]; if (failed1) - { - b->error = node->errors[L2OUTPUT_ERROR_EFP_DROP]; - } + b[0]->error = node->errors[L2OUTPUT_ERROR_EFP_DROP]; } } - // perform the PBB rewrite - else if (config->output_pbb_vtr.push_and_pop_bytes) + + if (l2_pbb && l2_pbb_process (b[0], &(config->output_pbb_vtr))) { - u32 failed = l2_pbb_process (b, &(config->output_pbb_vtr)); - if (PREDICT_FALSE (failed)) - { - *next = L2OUTPUT_NEXT_DROP; - b->error = node->errors[L2OUTPUT_ERROR_VTR_DROP]; - } + next[0] = L2OUTPUT_NEXT_DROP; + b[0]->error = node->errors[L2OUTPUT_ERROR_VTR_DROP]; } + + if (shg_set) + split_horizon_violation (node, config->shg, b[0], next); + + /* next */ + n_left -= 1; + b += 1; + next += 1; } } +static_always_inline void +l2output_set_buffer_error (vlib_buffer_t ** b, u32 n_left, vlib_error_t error) +{ + while (n_left >= 8) + { + vlib_prefetch_buffer_header (b[4], LOAD); + vlib_prefetch_buffer_header (b[5], LOAD); + vlib_prefetch_buffer_header (b[6], LOAD); + vlib_prefetch_buffer_header (b[7], LOAD); + b[0]->error = b[1]->error = b[2]->error = b[3]->error = error; + b += 4; + n_left -= 4; + } + while (n_left) + { + b[0]->error = error; + b += 1; + n_left -= 1; + } +} -static_always_inline uword -l2output_node_inline (vlib_main_t * vm, vlib_node_runtime_t * node, - vlib_frame_t * frame, int do_trace) +static_always_inline void +l2output_process_batch (vlib_main_t * vm, vlib_node_runtime_t * node, + l2_output_config_t * config, vlib_buffer_t ** b, + i16 * cdo, u16 * next, u32 n_left, int l2_efp, + int l2_vtr, int l2_pbb) { - u32 n_left_from, *from, *to_next; - l2output_next_t next_index; - l2output_main_t *msm = &l2output_main; - u32 cached_sw_if_index; - u32 cached_next_index; + u32 feature_bitmap = config->feature_bitmap & ~L2OUTPUT_FEAT_OUTPUT; + if (config->shg == 0 && feature_bitmap == 0) + l2output_process_batch_inline (vm, node, config, b, cdo, next, n_left, + l2_efp, l2_vtr, l2_pbb, 0, 0); + else if (config->shg == 0) + l2output_process_batch_inline (vm, node, config, b, cdo, next, n_left, + l2_efp, l2_vtr, l2_pbb, 0, 1); + else if (feature_bitmap == 0) + l2output_process_batch_inline (vm, node, config, b, cdo, next, n_left, + l2_efp, l2_vtr, l2_pbb, 1, 0); + else + l2output_process_batch_inline (vm, node, config, b, cdo, next, n_left, + l2_efp, l2_vtr, l2_pbb, 1, 1); +} - /* Invalidate cache */ - cached_sw_if_index = ~0; - cached_next_index = ~0; /* warning be gone */ +uword CLIB_CPU_OPTIMIZED +CLIB_MULTIARCH_FN (l2output_node_fn) (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + u32 n_left, *from; + l2output_main_t *msm = &l2output_main; + vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; + u16 nexts[VLIB_FRAME_SIZE]; + u32 sw_if_indices[VLIB_FRAME_SIZE], *sw_if_index; + i16 cur_data_offsets[VLIB_FRAME_SIZE], *cdo; + l2_output_config_t *config; + u32 feature_bitmap; from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; /* number of packets to process */ - next_index = node->cached_next_index; + n_left = frame->n_vectors; /* number of packets to process */ - while (n_left_from > 0) + vlib_get_buffers (vm, from, bufs, n_left); + b = bufs; + sw_if_index = sw_if_indices; + cdo = cur_data_offsets; + + /* extract data from buffer metadata */ + while (n_left >= 8) { - u32 n_left_to_next; + /* Prefetch the buffer header for the N+2 loop iteration */ + vlib_prefetch_buffer_header (b[4], LOAD); + vlib_prefetch_buffer_header (b[5], LOAD); + vlib_prefetch_buffer_header (b[6], LOAD); + vlib_prefetch_buffer_header (b[7], LOAD); + + sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; + cdo[0] = b[0]->current_data; + sw_if_index[1] = vnet_buffer (b[1])->sw_if_index[VLIB_TX]; + cdo[1] = b[1]->current_data; + sw_if_index[2] = vnet_buffer (b[2])->sw_if_index[VLIB_TX]; + cdo[2] = b[2]->current_data; + sw_if_index[3] = vnet_buffer (b[3])->sw_if_index[VLIB_TX]; + cdo[3] = b[3]->current_data; + + /* next */ + sw_if_index += 4; + n_left -= 4; + b += 4; + cdo += 4; + } + while (n_left) + { + sw_if_index[0] = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; + cdo[0] = b[0]->current_data; + + /* next */ + sw_if_index += 1; + n_left -= 1; + b += 1; + cdo += 1; + } - /* get space to enqueue frame to graph node "next_index" */ - vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + n_left = frame->n_vectors; + while (n_left) + { + u16 count, new_next, *next; + u16 off = frame->n_vectors - n_left; + b = bufs + off; - while (n_left_from >= 8 && n_left_to_next >= 4) + if (n_left >= 4) { - u32 bi0, bi1, bi2, bi3; - vlib_buffer_t *b0, *b1, *b2, *b3; - u32 next0, next1, next2, next3; - u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3; - ethernet_header_t *h0, *h1, *h2, *h3; - l2_output_config_t *config0, *config1, *config2, *config3; - u32 feature_bitmap0, feature_bitmap1; - u32 feature_bitmap2, feature_bitmap3; - - /* Prefetch next iteration. */ - { - vlib_buffer_t *p4, *p5, *p6, *p7; - - p4 = vlib_get_buffer (vm, from[4]); - p5 = vlib_get_buffer (vm, from[5]); - p6 = vlib_get_buffer (vm, from[6]); - p7 = vlib_get_buffer (vm, from[7]); - - /* Prefetch the buffer header for the N+2 loop iteration */ - vlib_prefetch_buffer_header (p4, LOAD); - vlib_prefetch_buffer_header (p5, LOAD); - vlib_prefetch_buffer_header (p6, LOAD); - vlib_prefetch_buffer_header (p7, LOAD); - } - - /* speculatively enqueue b0 and b1 to the current next frame */ - /* bi is "buffer index", b is pointer to the buffer */ - to_next[0] = bi0 = from[0]; - to_next[1] = bi1 = from[1]; - to_next[2] = bi2 = from[2]; - to_next[3] = bi3 = from[3]; - from += 4; - to_next += 4; - n_left_from -= 4; - n_left_to_next -= 4; - - b0 = vlib_get_buffer (vm, bi0); - b1 = vlib_get_buffer (vm, bi1); - b2 = vlib_get_buffer (vm, bi2); - b3 = vlib_get_buffer (vm, bi3); - - /* TX interface handles */ - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; - sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_TX]; - sw_if_index2 = vnet_buffer (b2)->sw_if_index[VLIB_TX]; - sw_if_index3 = vnet_buffer (b3)->sw_if_index[VLIB_TX]; - - vlib_node_increment_counter (vm, l2output_node.index, - L2OUTPUT_ERROR_L2OUTPUT, 4); - - /* Get config for the output interface */ - config0 = vec_elt_at_index (msm->configs, sw_if_index0); - config1 = vec_elt_at_index (msm->configs, sw_if_index1); - config2 = vec_elt_at_index (msm->configs, sw_if_index2); - config3 = vec_elt_at_index (msm->configs, sw_if_index3); - - /* - * Get features from the config - * TODO: mask out any non-applicable features - */ - feature_bitmap0 = config0->feature_bitmap; - feature_bitmap1 = config1->feature_bitmap; - feature_bitmap2 = config2->feature_bitmap; - feature_bitmap3 = config3->feature_bitmap; - - /* Determine next node */ - l2_output_dispatch (b0, node, &cached_sw_if_index, - &cached_next_index, sw_if_index0, - feature_bitmap0, &next0); - l2_output_dispatch (b1, node, &cached_sw_if_index, - &cached_next_index, sw_if_index1, - feature_bitmap1, &next1); - l2_output_dispatch (b2, node, &cached_sw_if_index, - &cached_next_index, sw_if_index2, - feature_bitmap2, &next2); - l2_output_dispatch (b3, node, &cached_sw_if_index, - &cached_next_index, sw_if_index3, - feature_bitmap3, &next3); - - l2output_vtr (node, config0, feature_bitmap0, b0, &next0); - l2output_vtr (node, config1, feature_bitmap1, b1, &next1); - l2output_vtr (node, config2, feature_bitmap2, b2, &next2); - l2output_vtr (node, config3, feature_bitmap3, b3, &next3); - - if (do_trace) - { - h0 = vlib_buffer_get_current (b0); - h1 = vlib_buffer_get_current (b1); - h2 = vlib_buffer_get_current (b2); - h3 = vlib_buffer_get_current (b3); - if (b0->flags & VLIB_BUFFER_IS_TRACED) - { - l2output_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->sw_if_index = sw_if_index0; - clib_memcpy (t->src, h0->src_address, 6); - clib_memcpy (t->dst, h0->dst_address, 6); - clib_memcpy (t->raw, &h0->type, sizeof (t->raw)); - } - if (b1->flags & VLIB_BUFFER_IS_TRACED) - { - l2output_trace_t *t = - vlib_add_trace (vm, node, b1, sizeof (*t)); - t->sw_if_index = sw_if_index1; - clib_memcpy (t->src, h1->src_address, 6); - clib_memcpy (t->dst, h1->dst_address, 6); - clib_memcpy (t->raw, &h1->type, sizeof (t->raw)); - } - if (b2->flags & VLIB_BUFFER_IS_TRACED) - { - l2output_trace_t *t = - vlib_add_trace (vm, node, b2, sizeof (*t)); - t->sw_if_index = sw_if_index2; - clib_memcpy (t->src, h2->src_address, 6); - clib_memcpy (t->dst, h2->dst_address, 6); - clib_memcpy (t->raw, &h2->type, sizeof (t->raw)); - } - if (b3->flags & VLIB_BUFFER_IS_TRACED) - { - l2output_trace_t *t = - vlib_add_trace (vm, node, b3, sizeof (*t)); - t->sw_if_index = sw_if_index3; - clib_memcpy (t->src, h3->src_address, 6); - clib_memcpy (t->dst, h3->dst_address, 6); - clib_memcpy (t->raw, &h3->type, sizeof (t->raw)); - } - } - - /* - * Perform the split horizon check - * The check can only fail for non-zero shg's - */ - if (PREDICT_FALSE (config0->shg + config1->shg + - config2->shg + config3->shg)) - { - /* one of the checks might fail, check both */ - if (split_horizon_violation - (config0->shg, vnet_buffer (b0)->l2.shg)) - { - next0 = L2OUTPUT_NEXT_DROP; - b0->error = node->errors[L2OUTPUT_ERROR_SHG_DROP]; - } - if (split_horizon_violation - (config1->shg, vnet_buffer (b1)->l2.shg)) - { - next1 = L2OUTPUT_NEXT_DROP; - b1->error = node->errors[L2OUTPUT_ERROR_SHG_DROP]; - } - if (split_horizon_violation - (config2->shg, vnet_buffer (b2)->l2.shg)) - { - next2 = L2OUTPUT_NEXT_DROP; - b2->error = node->errors[L2OUTPUT_ERROR_SHG_DROP]; - } - if (split_horizon_violation - (config3->shg, vnet_buffer (b3)->l2.shg)) - { - next3 = L2OUTPUT_NEXT_DROP; - b3->error = node->errors[L2OUTPUT_ERROR_SHG_DROP]; - } - } - - /* verify speculative enqueues, maybe switch current next frame */ - /* if next0==next1==next_index then nothing special needs to be done */ - vlib_validate_buffer_enqueue_x4 (vm, node, next_index, - to_next, n_left_to_next, - bi0, bi1, bi2, bi3, - next0, next1, next2, next3); + vlib_prefetch_buffer_header (b[0], LOAD); + vlib_prefetch_buffer_header (b[1], LOAD); + vlib_prefetch_buffer_header (b[2], LOAD); + vlib_prefetch_buffer_header (b[3], LOAD); } - while (n_left_from > 0 && n_left_to_next > 0) - { - u32 bi0; - vlib_buffer_t *b0; - u32 next0; - u32 sw_if_index0; - ethernet_header_t *h0; - l2_output_config_t *config0; - u32 feature_bitmap0; + sw_if_index = sw_if_indices + off; + cdo = cur_data_offsets + off; + next = nexts + off; - /* speculatively enqueue b0 to the current next frame */ - bi0 = from[0]; - to_next[0] = bi0; - from += 1; - to_next += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - - sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + count = clib_count_equal_u32 (sw_if_index, n_left); + n_left -= count; - vlib_node_increment_counter (vm, l2output_node.index, - L2OUTPUT_ERROR_L2OUTPUT, 1); + config = vec_elt_at_index (msm->configs, sw_if_index[0]); + feature_bitmap = config->feature_bitmap; + if (PREDICT_FALSE ((feature_bitmap & ~L2OUTPUT_FEAT_OUTPUT) != 0)) + new_next = feat_bitmap_get_next_node_index + (l2output_main.l2_out_feat_next, feature_bitmap); + else + new_next = vec_elt (l2output_main.output_node_index_vec, + sw_if_index[0]); + clib_memset_u16 (nexts + off, new_next, count); - /* Get config for the output interface */ - config0 = vec_elt_at_index (msm->configs, sw_if_index0); + if (new_next == L2OUTPUT_NEXT_DROP) + { + l2output_set_buffer_error + (b, count, node->errors[L2OUTPUT_ERROR_MAPPING_DROP]); + continue; + } - /* - * Get features from the config - * TODO: mask out any non-applicable features - */ - feature_bitmap0 = config0->feature_bitmap; + /* VTR */ + if (config->out_vtr_flag && config->output_vtr.push_and_pop_bytes) + { + if (feature_bitmap & L2OUTPUT_FEAT_EFP_FILTER) + l2output_process_batch (vm, node, config, b, cdo, next, count, + /* l2_efp */ 1, + /* l2_vtr */ 1, + /* l2_pbb */ 0); + else + l2output_process_batch (vm, node, config, b, cdo, next, count, + /* l2_efp */ 0, + /* l2_vtr */ 1, + /* l2_pbb */ 0); + } + else if (config->out_vtr_flag && + config->output_pbb_vtr.push_and_pop_bytes) + l2output_process_batch (vm, node, config, b, cdo, next, count, + /* l2_efp */ 0, + /* l2_vtr */ 0, + /* l2_pbb */ 1); + else + l2output_process_batch (vm, node, config, b, cdo, next, count, + /* l2_efp */ 0, + /* l2_vtr */ 0, + /* l2_pbb */ 0); + } - /* Determine next node */ - l2_output_dispatch (b0, node, &cached_sw_if_index, - &cached_next_index, sw_if_index0, - feature_bitmap0, &next0); - l2output_vtr (node, config0, feature_bitmap0, b0, &next0); + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) + { + n_left = frame->n_vectors; /* number of packets to process */ + b = bufs; - if (do_trace && PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + while (n_left) + { + if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) { + ethernet_header_t *h; l2output_trace_t *t = - vlib_add_trace (vm, node, b0, sizeof (*t)); - t->sw_if_index = sw_if_index0; - h0 = vlib_buffer_get_current (b0); - clib_memcpy (t->src, h0->src_address, 6); - clib_memcpy (t->dst, h0->dst_address, 6); - clib_memcpy (t->raw, &h0->type, sizeof (t->raw)); + vlib_add_trace (vm, node, b[0], sizeof (*t)); + t->sw_if_index = vnet_buffer (b[0])->sw_if_index[VLIB_TX]; + h = vlib_buffer_get_current (b[0]); + clib_memcpy (t->src, h->src_address, 6); + clib_memcpy (t->dst, h->dst_address, 6); + clib_memcpy (t->raw, &h->type, sizeof (t->raw)); } - - /* Perform the split horizon check */ - if (PREDICT_FALSE - (split_horizon_violation - (config0->shg, vnet_buffer (b0)->l2.shg))) - { - next0 = L2OUTPUT_NEXT_DROP; - b0->error = node->errors[L2OUTPUT_ERROR_SHG_DROP]; - } - - /* verify speculative enqueue, maybe switch current next frame */ - vlib_validate_buffer_enqueue_x1 (vm, node, next_index, - to_next, n_left_to_next, - bi0, next0); + /* next */ + n_left--; + b++; } - - vlib_put_next_frame (vm, node, next_index, n_left_to_next); } - return frame->n_vectors; -} + vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); + vlib_node_increment_counter (vm, l2output_node.index, + L2OUTPUT_ERROR_L2OUTPUT, frame->n_vectors); -static uword -l2output_node_fn (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) - return l2output_node_inline (vm, node, frame, 1 /* do_trace */ ); - return l2output_node_inline (vm, node, frame, 0 /* do_trace */ ); + return frame->n_vectors; } +#ifndef CLIB_MULTIARCH_VARIANT /* *INDENT-OFF* */ VLIB_REGISTER_NODE (l2output_node) = { .function = l2output_node_fn, @@ -517,7 +452,19 @@ VLIB_REGISTER_NODE (l2output_node) = { }, }; -VLIB_NODE_FUNCTION_MULTIARCH (l2output_node, l2output_node_fn); +#if __x86_64__ +vlib_node_function_t __clib_weak l2output_node_fn_avx512; +vlib_node_function_t __clib_weak l2output_node_fn_avx2; +static void __clib_constructor +l2output_multiarch_select (void) +{ + if (l2output_node_fn_avx512 && clib_cpu_supports_avx512f ()) + l2output_node.function = l2output_node_fn_avx512; + else if (l2output_node_fn_avx2 && clib_cpu_supports_avx2 ()) + l2output_node.function = l2output_node_fn_avx2; +} +#endif + /* *INDENT-ON* */ @@ -700,6 +647,7 @@ l2output_intf_bitmap_enable (u32 sw_if_index, u32 feature_bitmap, u32 enable) config->feature_bitmap &= ~feature_bitmap; } } +#endif /* * fd.io coding-style-patch-verification: ON -- cgit 1.2.3-korg