FIX: Add ICMPv6MLReport2 masking - csit

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author	pmikus <pmikus@cisco.com>	2021-06-10 08:51:19 +0000
committer	pmikus <pmikus@cisco.com>	2021-06-10 09:51:44 +0000
commit	8b25b4e89bdba964f2a3d602b8c47f551a084724 (patch)
tree	ffdc167ad55fdec9857d1abb5b28d5b64c1f805a /resources/libraries/bash/function/README.txt
parent	f754eac4faf76fdbffac648769c03f5668f9f6a2 (diff)

FIX: Add ICMPv6MLReport2 masking

Signed-off-by: pmikus <pmikus@cisco.com> Change-Id: I1183a0ffd13c6926b3963b78630954bb6356133b

Diffstat (limited to 'resources/libraries/bash/function/README.txt')

0 files changed, 0 insertions, 0 deletions

/* * l2_input_vtr.c : layer 2 input vlan tag rewrite processing * * Copyright (c) 2013 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 <vlib/vlib.h> #include <vnet/vnet.h> #include <vnet/ethernet/ethernet.h> #include <vnet/ethernet/packet.h> #include <vnet/l2/l2_input.h> #include <vnet/l2/feat_bitmap.h> #include <vnet/l2/l2_vtr.h> #include <vnet/l2/l2_input_vtr.h> #include <vnet/l2/l2_output.h> #include <vppinfra/error.h> #include <vppinfra/cache.h> typedef struct { /* per-pkt trace data */ u8 src[6]; u8 dst[6]; u8 raw[12]; /* raw data (vlans) */ u32 sw_if_index; } l2_invtr_trace_t; /* packet trace format function */ static u8 * format_l2_invtr_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 *); l2_invtr_trace_t *t = va_arg (*args, l2_invtr_trace_t *); s = format (s, "l2-input-vtr: sw_if_index %d dst %U src %U data " "%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x", t->sw_if_index, format_ethernet_address, t->dst, format_ethernet_address, t->src, t->raw[0], t->raw[1], t->raw[2], t->raw[3], t->raw[4], t->raw[5], t->raw[6], t->raw[7], t->raw[8], t->raw[9], t->raw[10], t->raw[11]); return s; } l2_invtr_main_t l2_invtr_main; static vlib_node_registration_t l2_invtr_node; #define foreach_l2_invtr_error \ _(L2_INVTR, "L2 inverter packets") \ _(DROP, "L2 input tag rewrite drops") typedef enum { #define _(sym,str) L2_INVTR_ERROR_##sym, foreach_l2_invtr_error #undef _ L2_INVTR_N_ERROR, } l2_invtr_error_t; static char *l2_invtr_error_strings[] = { #define _(sym,string) string, foreach_l2_invtr_error #undef _ }; typedef enum { L2_INVTR_NEXT_DROP, L2_INVTR_N_NEXT, } l2_invtr_next_t; static uword l2_invtr_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { u32 n_left_from, *from, *to_next; l2_invtr_next_t next_index; l2_invtr_main_t *msm = &l2_invtr_main; from = vlib_frame_vector_args (frame); n_left_from = frame->n_vectors; /* number of packets to process */ next_index = node->cached_next_index; while (n_left_from > 0) { u32 n_left_to_next; /* get space to enqueue frame to graph node "next_index" */ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); while (n_left_from >= 6 && n_left_to_next >= 2) { u32 bi0, bi1; vlib_buffer_t *b0, *b1; u32 next0, next1; u32 sw_if_index0, sw_if_index1; /* Prefetch next iteration. */ { vlib_buffer_t *p2, *p3, *p4, *p5; u32 sw_if_index2, sw_if_index3; p2 = vlib_get_buffer (vm, from[2]); p3 = vlib_get_buffer (vm, from[3]); p4 = vlib_get_buffer (vm, from[4]); p5 = vlib_get_buffer (vm, from[5]); /* Prefetch the buffer header and packet for the N+2 loop iteration */ vlib_prefetch_buffer_header (p4, LOAD); vlib_prefetch_buffer_header (p5, LOAD); CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE); CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE); /* * Prefetch the input config for the N+1 loop iteration * This depends on the buffer header above */ sw_if_index2 = vnet_buffer (p2)->sw_if_index[VLIB_RX]; sw_if_index3 = vnet_buffer (p3)->sw_if_index[VLIB_RX]; CLIB_PREFETCH (vec_elt_at_index (l2output_main.configs, sw_if_index2), CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (vec_elt_at_index (l2output_main.configs, sw_if_index3), CLIB_CACHE_LINE_BYTES, 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]; from += 2; to_next += 2; n_left_from -= 2; n_left_to_next -= 2; b0 = vlib_get_buffer (vm, bi0); b1 = vlib_get_buffer (vm, bi1); /* RX interface handles */ sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX]; /* Determine the next node */ next0 = vnet_l2_feature_next (b0, msm->feat_next_node_index, L2INPUT_FEAT_VTR); next1 = vnet_l2_feature_next (b1, msm->feat_next_node_index, L2INPUT_FEAT_VTR); l2_output_config_t *config0; l2_output_config_t *config1; config0 = vec_elt_at_index (l2output_main.configs, sw_if_index0); config1 = vec_elt_at_index (l2output_main.configs, sw_if_index1); if (PREDICT_FALSE (config0->out_vtr_flag)) { if (config0->output_vtr.push_and_pop_bytes) { /* perform the tag rewrite on two packets */ if (l2_vtr_process (b0, &config0->input_vtr)) { /* Drop packet */ next0 = L2_INVTR_NEXT_DROP; b0->error = node->errors[L2_INVTR_ERROR_DROP]; } } else if (config0->output_pbb_vtr.push_and_pop_bytes) { if (l2_pbb_process (b0, &(config0->input_pbb_vtr))) { /* Drop packet */ next0 = L2_INVTR_NEXT_DROP; b0->error = node->errors[L2_INVTR_ERROR_DROP]; } } } if (PREDICT_FALSE (config1->out_vtr_flag)) { if (config1->output_vtr.push_and_pop_bytes) { if (l2_vtr_process (b1, &config1->input_vtr)) { /* Drop packet */ next1 = L2_INVTR_NEXT_DROP; b1->error = node->errors[L2_INVTR_ERROR_DROP]; } } else if (config1->output_pbb_vtr.push_and_pop_bytes) { if (l2_pbb_process (b1, &(config1->input_pbb_vtr))) { /* Drop packet */ next1 = L2_INVTR_NEXT_DROP; b1->error = node->errors[L2_INVTR_ERROR_DROP]; } } } if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE))) { if (b0->flags & VLIB_BUFFER_IS_TRACED) { l2_invtr_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); ethernet_header_t *h0 = vlib_buffer_get_current (b0); t->sw_if_index = sw_if_index0; clib_memcpy_fast (t->src, h0->src_address, 6); clib_memcpy_fast (t->dst, h0->dst_address, 6); clib_memcpy_fast (t->raw, &h0->type, sizeof (t->raw)); } if (b1->flags & VLIB_BUFFER_IS_TRACED) { l2_invtr_trace_t *t = vlib_add_trace (vm, node, b1, sizeof (*t)); ethernet_header_t *h1 = vlib_buffer_get_current (b1); t->sw_if_index = sw_if_index0; clib_memcpy_fast (t->src, h1->src_address, 6); clib_memcpy_fast (t->dst, h1->dst_address, 6); clib_memcpy_fast (t->raw, &h1->type, sizeof (t->raw)); } } /* verify speculative enqueues, maybe switch current next frame */ /* if next0==next1==next_index then nothing special needs to be done */ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next, n_left_to_next, bi0, bi1, next0, next1); } while (n_left_from > 0 && n_left_to_next > 0) { u32 bi0; vlib_buffer_t *b0; u32 next0; u32 sw_if_index0; /* 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_RX]; /* Determine the next node */ next0 = vnet_l2_feature_next (b0, msm->feat_next_node_index, L2INPUT_FEAT_VTR); l2_output_config_t *config0; config0 = vec_elt_at_index (l2output_main.configs, sw_if_index0); if (PREDICT_FALSE (config0->out_vtr_flag)) { if (config0->output_vtr.push_and_pop_bytes) { /* perform the tag rewrite on one packet */ if (l2_vtr_process (b0, &config0->input_vtr)) { /* Drop packet */ next0 = L2_INVTR_NEXT_DROP; b0->error = node->errors[L2_INVTR_ERROR_DROP]; } } else if (config0->output_pbb_vtr.push_and_pop_bytes) { if (l2_pbb_process (b0, &(config0->input_pbb_vtr))) { /* Drop packet */ next0 = L2_INVTR_NEXT_DROP; b0->error = node->errors[L2_INVTR_ERROR_DROP]; } } } if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && (b0->flags & VLIB_BUFFER_IS_TRACED))) { l2_invtr_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); ethernet_header_t *h0 = vlib_buffer_get_current (b0); t->sw_if_index = sw_if_index0; clib_memcpy_fast (t->src, h0->src_address, 6); clib_memcpy_fast (t->dst, h0->dst_address, 6); clib_memcpy_fast (t->raw, &h0->type, sizeof (t->raw)); } /* 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); } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } return frame->n_vectors; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (l2_invtr_node,static) = { .function = l2_invtr_node_fn, .name = "l2-input-vtr", .vector_size = sizeof (u32), .format_trace = format_l2_invtr_trace, .type = VLIB_NODE_TYPE_INTERNAL, .n_errors = ARRAY_LEN(l2_invtr_error_strings), .error_strings = l2_invtr_error_strings, .n_next_nodes = L2_INVTR_N_NEXT, /* edit / add dispositions here */ .next_nodes = { [L2_INVTR_NEXT_DROP] = "error-drop", }, }; /* *INDENT-ON* */ VLIB_NODE_FUNCTION_MULTIARCH (l2_invtr_node, l2_invtr_node_fn) clib_error_t *l2_invtr_init (vlib_main_t * vm) { l2_invtr_main_t *mp = &l2_invtr_main; mp->vlib_main = vm; mp->vnet_main = vnet_get_main (); /* Initialize the feature next-node indexes */ feat_bitmap_init_next_nodes (vm, l2_invtr_node.index, L2INPUT_N_FEAT, l2input_get_feat_names (), mp->feat_next_node_index); return 0; } VLIB_INIT_FUNCTION (l2_invtr_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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