diff options
Diffstat (limited to 'src/plugins/nat/pnat/pnat_test_stubs.h')
| -rw-r--r-- | src/plugins/nat/pnat/pnat_test_stubs.h | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/src/plugins/nat/pnat/pnat_test_stubs.h b/src/plugins/nat/pnat/pnat_test_stubs.h new file mode 100644 index 00000000000..2801398407c --- /dev/null +++ b/src/plugins/nat/pnat/pnat_test_stubs.h @@ -0,0 +1,214 @@ +/* + * Copyright (c) 2021 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. + */ + +#ifndef included_pnat_test_stubs_h +#define included_pnat_test_stubs_h + +void os_panic(void) {} +void os_exit(int code) {} +u32 ip4_fib_table_get_index_for_sw_if_index(u32 sw_if_index) { return 0; } +#include <vpp/stats/stat_segment.h> +clib_error_t *stat_segment_register_gauge(u8 *names, + stat_segment_update_fn update_fn, + u32 index) { + return 0; +}; +#include <vnet/feature/feature.h> +vnet_feature_main_t feature_main; +void classify_get_trace_chain(void){}; + +/* Format an IP4 address. */ +u8 *format_ip4_address(u8 *s, va_list *args) { + u8 *a = va_arg(*args, u8 *); + return format(s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]); +} + +u8 *format_pnat_5tuple(u8 *s, va_list *args) { return 0; } + +vl_counter_t pnat_error_counters[10]; + +int ip4_sv_reass_enable_disable_with_refcnt(u32 sw_if_index, int is_enable) { + return 0; +} +int ip4_sv_reass_output_enable_disable_with_refcnt(u32 sw_if_index, + int is_enable) { + return 0; +} +int vnet_feature_enable_disable(const char *arc_name, const char *node_name, + u32 sw_if_index, int enable_disable, + void *feature_config, + u32 n_feature_config_bytes) { + return 0; +} +vnet_main_t *vnet_get_main(void) { return 0; } + +static struct { + vec_header_t h; + vlib_main_t *vm; +} __attribute__((packed)) __bootstrap_vlib_main_vector + __attribute__((aligned(CLIB_CACHE_LINE_BYTES))) = { + .h.len = 1, + .vm = &vlib_global_main, +}; + +vlib_main_t **vlib_mains = &__bootstrap_vlib_main_vector.vm; + +/* Compute TCP/UDP/ICMP4 checksum in software. */ +u16 ip4_tcp_udp_compute_checksum(vlib_main_t *vm, vlib_buffer_t *p0, + ip4_header_t *ip0) { + ip_csum_t sum0; + u32 ip_header_length, payload_length_host_byte_order; + + /* Initialize checksum with ip header. */ + ip_header_length = ip4_header_bytes(ip0); + payload_length_host_byte_order = + clib_net_to_host_u16(ip0->length) - ip_header_length; + sum0 = clib_host_to_net_u32(payload_length_host_byte_order + + (ip0->protocol << 16)); + + if (BITS(uword) == 32) { + sum0 = ip_csum_with_carry(sum0, + clib_mem_unaligned(&ip0->src_address, u32)); + sum0 = ip_csum_with_carry(sum0, + clib_mem_unaligned(&ip0->dst_address, u32)); + } else + sum0 = ip_csum_with_carry(sum0, + clib_mem_unaligned(&ip0->src_address, u64)); + return ip_calculate_l4_checksum(vm, p0, sum0, + payload_length_host_byte_order, (u8 *)ip0, + ip_header_length, NULL); +} + +u32 ip4_tcp_udp_validate_checksum(vlib_main_t *vm, vlib_buffer_t *p0) { + ip4_header_t *ip0 = vlib_buffer_get_current(p0); + udp_header_t *udp0; + u16 sum16; + + ASSERT(ip0->protocol == IP_PROTOCOL_TCP || + ip0->protocol == IP_PROTOCOL_UDP); + + udp0 = (void *)(ip0 + 1); + if (ip0->protocol == IP_PROTOCOL_UDP && udp0->checksum == 0) { + p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED | + VNET_BUFFER_F_L4_CHECKSUM_CORRECT); + return p0->flags; + } + + sum16 = ip4_tcp_udp_compute_checksum(vm, p0, ip0); + + p0->flags |= (VNET_BUFFER_F_L4_CHECKSUM_COMPUTED | + ((sum16 == 0) << VNET_BUFFER_F_LOG2_L4_CHECKSUM_CORRECT)); + + return p0->flags; +} +u8 *format_tcp_header(u8 *s, va_list *args) { + tcp_header_t *tcp = va_arg(*args, tcp_header_t *); + u32 max_header_bytes = va_arg(*args, u32); + u32 header_bytes; + u32 indent; + + /* Nothing to do. */ + if (max_header_bytes < sizeof(tcp[0])) + return format(s, "TCP header truncated"); + + indent = format_get_indent(s); + indent += 2; + header_bytes = tcp_header_bytes(tcp); + + s = format(s, "TCP: %d -> %d", clib_net_to_host_u16(tcp->src), + clib_net_to_host_u16(tcp->dst)); + + s = format(s, "\n%Useq. 0x%08x ack 0x%08x", format_white_space, indent, + clib_net_to_host_u32(tcp->seq_number), + clib_net_to_host_u32(tcp->ack_number)); + + s = format(s, "\n%Utcp header: %d bytes", format_white_space, indent, + tcp->flags, header_bytes); + + s = format(s, "\n%Uwindow %d, checksum 0x%04x", format_white_space, indent, + clib_net_to_host_u16(tcp->window), + clib_net_to_host_u16(tcp->checksum)); + return s; +} + +/* Format an IP4 header. */ +u8 *format_ip4_header(u8 *s, va_list *args) { + ip4_header_t *ip = va_arg(*args, ip4_header_t *); + u32 max_header_bytes = va_arg(*args, u32); + u32 ip_version, header_bytes; + u32 indent; + + /* Nothing to do. */ + if (max_header_bytes < sizeof(ip[0])) + return format(s, "IP header truncated"); + + indent = format_get_indent(s); + indent += 2; + + ip_version = (ip->ip_version_and_header_length >> 4); + header_bytes = (ip->ip_version_and_header_length & 0xf) * sizeof(u32); + + s = format(s, "%d: %U -> %U", ip->protocol, format_ip4_address, + ip->src_address.data, format_ip4_address, ip->dst_address.data); + + /* Show IP version and header length only with unexpected values. */ + if (ip_version != 4 || header_bytes != sizeof(ip4_header_t)) + s = format(s, "\n%Uversion %d, header length %d", format_white_space, + indent, ip_version, header_bytes); + + s = format(s, "\n%Utos 0x%02x, ttl %d, length %d, checksum 0x%04x", + format_white_space, indent, ip->tos, ip->ttl, + clib_net_to_host_u16(ip->length), + clib_net_to_host_u16(ip->checksum)); + + /* Check and report invalid checksums. */ + { + if (!ip4_header_checksum_is_valid(ip)) + s = format(s, " (should be 0x%04x)", + clib_net_to_host_u16(ip4_header_checksum(ip))); + } + + { + u32 f = clib_net_to_host_u16(ip->flags_and_fragment_offset); + u32 o; + + s = format(s, "\n%Ufragment id 0x%04x", format_white_space, indent, + clib_net_to_host_u16(ip->fragment_id)); + + /* Fragment offset. */ + o = 8 * (f & 0x1fff); + f ^= f & 0x1fff; + if (o != 0) + s = format(s, " offset %d", o); + + if (f != 0) { + s = format(s, ", flags "); +#define _(l) \ + if (f & IP4_HEADER_FLAG_##l) \ + s = format(s, #l); + _(MORE_FRAGMENTS); + _(DONT_FRAGMENT); + _(CONGESTION); +#undef _ + } + /* Fragment packet but not the first. */ + if (o != 0) + return s; + } + + return s; +} + +#endif |