diff options
Diffstat (limited to 'src/plugins/l3xc/l3xc_node.c')
| -rw-r--r-- | src/plugins/l3xc/l3xc_node.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/src/plugins/l3xc/l3xc_node.c b/src/plugins/l3xc/l3xc_node.c new file mode 100644 index 00000000000..62db8c328b0 --- /dev/null +++ b/src/plugins/l3xc/l3xc_node.c @@ -0,0 +1,256 @@ +/* + * Copyright (c) 2019 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. + */ + +#include <plugins/l3xc/l3xc.h> +#include <vnet/feature/feature.h> + +typedef enum l3xc_next_t_ +{ + L3XC_NEXT_DROP, + L3XC_N_NEXT, +} l3xc_next_t; + +typedef struct l3xc_input_trace_t_ +{ + index_t l3xci; + index_t lbi; +} l3xc_input_trace_t; + +typedef enum +{ +#define l3xc_error(n,s) L3XC_ERROR_##n, +#include "l3xc_error.def" +#undef l3xc_error + L3XC_N_ERROR, +} l3xc_error_t; + +always_inline uword +l3xc_input_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * frame, fib_protocol_t fproto) +{ + vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b; + u16 nexts[VLIB_FRAME_SIZE], *next; + u32 n_left, *from; + + from = vlib_frame_vector_args (frame); + n_left = frame->n_vectors; + b = bufs; + next = nexts; + + vlib_get_buffers (vm, from, bufs, n_left); + + while (n_left >= 8) + { + const l3xc_t *l3xc0, *l3xc1, *l3xc2, *l3xc3; + u32 l3xci0, l3xci1, l3xci2, l3xci3; + u32 next_u32; + + /* Prefetch next 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); + } + + l3xci0 = + *(u32 *) vnet_feature_next_with_data (&next_u32, b[0], + sizeof (l3xci0)); + l3xci1 = + *(u32 *) vnet_feature_next_with_data (&next_u32, b[1], + sizeof (l3xci1)); + l3xci2 = + *(u32 *) vnet_feature_next_with_data (&next_u32, b[2], + sizeof (l3xci2)); + l3xci3 = + *(u32 *) vnet_feature_next_with_data (&next_u32, b[3], + sizeof (l3xci3)); + + l3xc0 = l3xc_get (l3xci0); + l3xc1 = l3xc_get (l3xci1); + l3xc2 = l3xc_get (l3xci2); + l3xc3 = l3xc_get (l3xci3); + + next[0] = l3xc0->l3xc_dpo.dpoi_next_node; + next[1] = l3xc1->l3xc_dpo.dpoi_next_node; + next[2] = l3xc2->l3xc_dpo.dpoi_next_node; + next[3] = l3xc3->l3xc_dpo.dpoi_next_node; + + vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = l3xc0->l3xc_dpo.dpoi_index; + vnet_buffer (b[1])->ip.adj_index[VLIB_TX] = l3xc1->l3xc_dpo.dpoi_index; + vnet_buffer (b[2])->ip.adj_index[VLIB_TX] = l3xc2->l3xc_dpo.dpoi_index; + vnet_buffer (b[3])->ip.adj_index[VLIB_TX] = l3xc3->l3xc_dpo.dpoi_index; + + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) + { + if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) + { + l3xc_input_trace_t *tr; + + tr = vlib_add_trace (vm, node, b[0], sizeof (*tr)); + tr->l3xci = l3xci0; + tr->lbi = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; + } + if (PREDICT_FALSE (b[1]->flags & VLIB_BUFFER_IS_TRACED)) + { + l3xc_input_trace_t *tr; + + tr = vlib_add_trace (vm, node, b[1], sizeof (*tr)); + tr->l3xci = l3xci1; + tr->lbi = vnet_buffer (b[1])->ip.adj_index[VLIB_TX]; + } + if (PREDICT_FALSE (b[2]->flags & VLIB_BUFFER_IS_TRACED)) + { + l3xc_input_trace_t *tr; + + tr = vlib_add_trace (vm, node, b[2], sizeof (*tr)); + tr->l3xci = l3xci2; + tr->lbi = vnet_buffer (b[2])->ip.adj_index[VLIB_TX]; + } + if (PREDICT_FALSE (b[3]->flags & VLIB_BUFFER_IS_TRACED)) + { + l3xc_input_trace_t *tr; + + tr = vlib_add_trace (vm, node, b[3], sizeof (*tr)); + tr->l3xci = l3xci3; + tr->lbi = vnet_buffer (b[3])->ip.adj_index[VLIB_TX]; + } + } + + b += 4; + next += 4; + n_left -= 4; + } + + while (n_left > 0) + { + u32 l3xci0, next_u32; + const l3xc_t *l3xc0; + + l3xci0 = + *(u32 *) vnet_feature_next_with_data (&next_u32, b[0], + sizeof (l3xci0)); + + l3xc0 = l3xc_get (l3xci0); + + next[0] = l3xc0->l3xc_dpo.dpoi_next_node; + + vnet_buffer (b[0])->ip.adj_index[VLIB_TX] = l3xc0->l3xc_dpo.dpoi_index; + + if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED)) + { + l3xc_input_trace_t *tr; + + tr = vlib_add_trace (vm, node, b[0], sizeof (*tr)); + tr->l3xci = l3xci0; + tr->lbi = vnet_buffer (b[0])->ip.adj_index[VLIB_TX]; + } + + b += 1; + next += 1; + n_left -= 1; + } + + vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors); + return frame->n_vectors; +} + +static uword +l3xc_input_ip4 (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) +{ + return l3xc_input_inline (vm, node, frame, FIB_PROTOCOL_IP4); +} + +static uword +l3xc_input_ip6 (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) +{ + return l3xc_input_inline (vm, node, frame, FIB_PROTOCOL_IP6); +} + +static u8 * +format_l3xc_input_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + l3xc_input_trace_t *t = va_arg (*args, l3xc_input_trace_t *); + + s = format (s, "l3xc-index:%d lb-index:%d", t->l3xci, t->lbi); + return s; +} + +static char *l3xc_error_strings[] = { +#define l3xc_error(n,s) s, +#include "l3xc_error.def" +#undef l3xc_error +}; + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (l3xc_ip4_node) = +{ + .function = l3xc_input_ip4, + .name = "l3xc-input-ip4", + .vector_size = sizeof (u32), + .format_trace = format_l3xc_input_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = L3XC_N_ERROR, + .error_strings = l3xc_error_strings, + .n_next_nodes = L3XC_N_NEXT, + .next_nodes = + { + [L3XC_NEXT_DROP] = "error-drop", + } +}; + +VLIB_REGISTER_NODE (l3xc_ip6_node) = +{ + .function = l3xc_input_ip6, + .name = "l3xc-input-ip6", + .vector_size = sizeof (u32), + .format_trace = format_l3xc_input_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + .n_errors = 0, + .n_next_nodes = L3XC_N_NEXT, + + .next_nodes = + { + [L3XC_NEXT_DROP] = "error-drop", + } +}; + +VNET_FEATURE_INIT (l3xc_ip4_feat, static) = +{ + .arc_name = "ip4-unicast", + .node_name = "l3xc-input-ip4", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip4-fa"), +}; + +VNET_FEATURE_INIT (l3xc_ip6_feat, static) = +{ + .arc_name = "ip6-unicast", + .node_name = "l3xc-input-ip6", + .runs_after = VNET_FEATURES ("acl-plugin-in-ip6-fa"), +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |