2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
15 #include <vlib/vlib.h>
16 #include <vnet/vnet.h>
17 #include <vnet/pg/pg.h>
18 #include <vppinfra/error.h>
19 #include <vnet/ethernet/ethernet.h>
20 #include <vnet/ip/ip.h>
21 #include <vnet/ip/ip6_hop_by_hop.h>
22 #include <ioam/export-common/ioam_export.h>
31 /* packet trace format function */
33 format_export_trace (u8 * s, va_list * args)
35 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
36 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
37 export_trace_t *t = va_arg (*args, export_trace_t *);
39 s = format (s, "EXPORT: flow_label %d, next index %d",
40 t->flow_label, t->next_index);
44 vlib_node_registration_t export_node;
45 extern ioam_export_main_t ioam_export_main;
47 #define foreach_export_error \
48 _(RECORDED, "Packets recorded for export")
52 #define _(sym,str) EXPORT_ERROR_##sym,
58 static char *export_error_strings[] = {
59 #define _(sym,string) string,
71 copy3cachelines (void *dst, const void *src, size_t n)
74 if (PREDICT_FALSE (n < DEFAULT_EXPORT_SIZE))
76 /* Copy only the first 1/2 cache lines whatever is available */
78 clib_mov64 ((u8 *) dst, (const u8 *) src);
80 clib_mov64 ((u8 *) dst + 64, (const u8 *) src + 64);
83 clib_mov64 ((u8 *) dst, (const u8 *) src);
84 clib_mov64 ((u8 *) dst + 64, (const u8 *) src + 64);
85 clib_mov64 ((u8 *) dst + 128, (const u8 *) src + 128);
89 u64 *copy_dst, *copy_src;
91 copy_dst = (u64 *) dst;
92 copy_src = (u64 *) src;
93 if (PREDICT_FALSE (n < DEFAULT_EXPORT_SIZE))
95 for (i = 0; i < n / 64; i++)
97 copy_dst[0] = copy_src[0];
98 copy_dst[1] = copy_src[1];
99 copy_dst[2] = copy_src[2];
100 copy_dst[3] = copy_src[3];
101 copy_dst[4] = copy_src[4];
102 copy_dst[5] = copy_src[5];
103 copy_dst[6] = copy_src[6];
104 copy_dst[7] = copy_src[7];
110 for (i = 0; i < 3; i++)
112 copy_dst[0] = copy_src[0];
113 copy_dst[1] = copy_src[1];
114 copy_dst[2] = copy_src[2];
115 copy_dst[3] = copy_src[3];
116 copy_dst[4] = copy_src[4];
117 copy_dst[5] = copy_src[5];
118 copy_dst[6] = copy_src[6];
119 copy_dst[7] = copy_src[7];
127 ip6_export_fixup_func (vlib_buffer_t * export_buf, vlib_buffer_t * pak_buf)
129 ip6_header_t *ip6_temp =
130 (ip6_header_t *) (export_buf->data + export_buf->current_length);
131 u32 flow_label_temp =
132 clib_net_to_host_u32(ip6_temp->ip_version_traffic_class_and_flow_label)
135 IOAM_MASK_DECAP_BIT((vnet_buffer(pak_buf)->l2_classify.opaque_index));
136 ip6_temp->ip_version_traffic_class_and_flow_label =
137 clib_host_to_net_u32(flow_label_temp);
141 ip6_export_node_fn (vlib_main_t * vm,
142 vlib_node_runtime_t * node, vlib_frame_t * frame)
144 ioam_export_main_t *em = &ioam_export_main;
145 ioam_export_node_common(em, vm, node, frame, ip6_header_t, payload_length,
146 ip_version_traffic_class_and_flow_label,
147 EXPORT_NEXT_POP_HBYH, ip6_export_fixup_func);
148 return frame->n_vectors;
152 * Node for IP6 export
154 VLIB_REGISTER_NODE (export_node) =
156 .function = ip6_export_node_fn,
157 .name = "ip6-export",
158 .vector_size = sizeof (u32),
159 .format_trace = format_export_trace,
160 .type = VLIB_NODE_TYPE_INTERNAL,
161 .n_errors = ARRAY_LEN (export_error_strings),
162 .error_strings = export_error_strings,
163 .n_next_nodes = EXPORT_N_NEXT,
164 /* edit / add dispositions here */
167 [EXPORT_NEXT_POP_HBYH] = "ip6-pop-hop-by-hop"