2 * Copyright (c) 2021 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.
16 #ifndef included_pnat_test_stubs_h
17 #define included_pnat_test_stubs_h
19 void os_panic(void) {}
20 void os_exit(int code) {}
21 u32 ip4_fib_table_get_index_for_sw_if_index(u32 sw_if_index) { return 0; }
22 #include <vpp/stats/stat_segment.h>
23 clib_error_t *stat_segment_register_gauge(u8 *names,
24 stat_segment_update_fn update_fn,
28 #include <vnet/feature/feature.h>
29 vnet_feature_main_t feature_main;
30 void classify_get_trace_chain(void){};
32 /* Format an IP4 address. */
33 u8 *format_ip4_address(u8 *s, va_list *args) {
34 u8 *a = va_arg(*args, u8 *);
35 return format(s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]);
38 u8 *format_pnat_5tuple(u8 *s, va_list *args) { return 0; }
40 vl_counter_t pnat_error_counters[10];
42 int ip4_sv_reass_enable_disable_with_refcnt(u32 sw_if_index, int is_enable) {
45 int ip4_sv_reass_output_enable_disable_with_refcnt(u32 sw_if_index,
49 int vnet_feature_enable_disable(const char *arc_name, const char *node_name,
50 u32 sw_if_index, int enable_disable,
52 u32 n_feature_config_bytes) {
55 vnet_main_t *vnet_get_main(void) { return 0; }
60 } __attribute__((packed)) __bootstrap_vlib_main_vector
61 __attribute__((aligned(CLIB_CACHE_LINE_BYTES))) = {
63 .vm = &vlib_global_main,
66 vlib_main_t **vlib_mains = &__bootstrap_vlib_main_vector.vm;
68 /* Compute TCP/UDP/ICMP4 checksum in software. */
69 u16 ip4_tcp_udp_compute_checksum(vlib_main_t *vm, vlib_buffer_t *p0,
72 u32 ip_header_length, payload_length_host_byte_order;
74 /* Initialize checksum with ip header. */
75 ip_header_length = ip4_header_bytes(ip0);
76 payload_length_host_byte_order =
77 clib_net_to_host_u16(ip0->length) - ip_header_length;
78 sum0 = clib_host_to_net_u32(payload_length_host_byte_order +
79 (ip0->protocol << 16));
81 if (BITS(uword) == 32) {
82 sum0 = ip_csum_with_carry(sum0,
83 clib_mem_unaligned(&ip0->src_address, u32));
84 sum0 = ip_csum_with_carry(sum0,
85 clib_mem_unaligned(&ip0->dst_address, u32));
87 sum0 = ip_csum_with_carry(sum0,
88 clib_mem_unaligned(&ip0->src_address, u64));
89 return ip_calculate_l4_checksum(vm, p0, sum0,
90 payload_length_host_byte_order, (u8 *)ip0,
91 ip_header_length, NULL);
94 u32 ip4_tcp_udp_validate_checksum(vlib_main_t *vm, vlib_buffer_t *p0) {
95 ip4_header_t *ip0 = vlib_buffer_get_current(p0);
99 ASSERT(ip0->protocol == IP_PROTOCOL_TCP ||
100 ip0->protocol == IP_PROTOCOL_UDP);
102 udp0 = (void *)(ip0 + 1);
103 if (ip0->protocol == IP_PROTOCOL_UDP && udp0->checksum == 0) {
104 p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED |
105 VNET_BUFFER_F_L4_CHECKSUM_CORRECT);
109 sum16 = ip4_tcp_udp_compute_checksum(vm, p0, ip0);
111 p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED |
112 ((sum16 == 0) << VNET_BUFFER_F_LOG2_L4_CHECKSUM_CORRECT));
116 u8 *format_tcp_header(u8 *s, va_list *args) {
117 tcp_header_t *tcp = va_arg(*args, tcp_header_t *);
118 u32 max_header_bytes = va_arg(*args, u32);
123 if (max_header_bytes < sizeof(tcp[0]))
124 return format(s, "TCP header truncated");
126 indent = format_get_indent(s);
128 header_bytes = tcp_header_bytes(tcp);
130 s = format(s, "TCP: %d -> %d", clib_net_to_host_u16(tcp->src),
131 clib_net_to_host_u16(tcp->dst));
133 s = format(s, "\n%Useq. 0x%08x ack 0x%08x", format_white_space, indent,
134 clib_net_to_host_u32(tcp->seq_number),
135 clib_net_to_host_u32(tcp->ack_number));
137 s = format(s, "\n%Utcp header: %d bytes", format_white_space, indent,
138 tcp->flags, header_bytes);
140 s = format(s, "\n%Uwindow %d, checksum 0x%04x", format_white_space, indent,
141 clib_net_to_host_u16(tcp->window),
142 clib_net_to_host_u16(tcp->checksum));
146 /* Format an IP4 header. */
147 u8 *format_ip4_header(u8 *s, va_list *args) {
148 ip4_header_t *ip = va_arg(*args, ip4_header_t *);
149 u32 max_header_bytes = va_arg(*args, u32);
150 u32 ip_version, header_bytes;
154 if (max_header_bytes < sizeof(ip[0]))
155 return format(s, "IP header truncated");
157 indent = format_get_indent(s);
160 ip_version = (ip->ip_version_and_header_length >> 4);
161 header_bytes = (ip->ip_version_and_header_length & 0xf) * sizeof(u32);
163 s = format(s, "%d: %U -> %U", ip->protocol, format_ip4_address,
164 ip->src_address.data, format_ip4_address, ip->dst_address.data);
166 /* Show IP version and header length only with unexpected values. */
167 if (ip_version != 4 || header_bytes != sizeof(ip4_header_t))
168 s = format(s, "\n%Uversion %d, header length %d", format_white_space,
169 indent, ip_version, header_bytes);
171 s = format(s, "\n%Utos 0x%02x, ttl %d, length %d, checksum 0x%04x",
172 format_white_space, indent, ip->tos, ip->ttl,
173 clib_net_to_host_u16(ip->length),
174 clib_net_to_host_u16(ip->checksum));
176 /* Check and report invalid checksums. */
178 if (!ip4_header_checksum_is_valid(ip))
179 s = format(s, " (should be 0x%04x)",
180 clib_net_to_host_u16(ip4_header_checksum(ip)));
184 u32 f = clib_net_to_host_u16(ip->flags_and_fragment_offset);
187 s = format(s, "\n%Ufragment id 0x%04x", format_white_space, indent,
188 clib_net_to_host_u16(ip->fragment_id));
190 /* Fragment offset. */
191 o = 8 * (f & 0x1fff);
194 s = format(s, " offset %d", o);
197 s = format(s, ", flags ");
199 if (f & IP4_HEADER_FLAG_##l) \
206 /* Fragment packet but not the first. */