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add new options to overwrite sources

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+ stream->source-ipv4-address
+ stream->source-ipv6-address
This commit is contained in:
Christian Giese
2021-03-31 22:52:22 +02:00
parent 35cffe2a2d
commit dd427be063
3 changed files with 31 additions and 3 deletions
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docs/config.md
+2
View File
@@ -546,5 +546,7 @@ Attribute | Description | Default
`vlan-priority` | VLAN priority | 0
`length` | Layer 3 (IP + payload) traffic length (76 - 1500) | 128
`pps` | Stream traffic rate in packets per second | 1
`source-ipv4-address` | Overwrite source IPv4 address (downstream only) |
`source-ipv6-address` | Overwrite source IPv6 address (downstream only) |
For L2TP downstream traffic the IPv4 TOS is applied to the outer IPv4 and inner IPv4 header.
src/bbl_config.c
+14
View File
@@ -319,6 +319,20 @@ json_parse_stream (json_t *stream, bbl_stream_config *stream_config) {
} else {
stream_config->pps = 1;
}
if (json_unpack(stream, "{s:s}", "source-ipv4-address", &s) == 0) {
if(!inet_pton(AF_INET, s, &stream_config->ipv4_source_address)) {
fprintf(stderr, "JSON config error: Invalid value for stream->source-ipv4-address\n");
return false;
}
}
if (json_unpack(stream, "{s:s}", "source-ipv6-address", &s) == 0) {
if(!inet_pton(AF_INET6, s, &stream_config->ipv6_source_address)) {
fprintf(stderr, "JSON config error: Invalid value for stream->source-ipv6-address\n");
return false;
}
}
return true;
}
src/bbl_stream.c
+15 -3
View File
@@ -285,7 +285,11 @@ bbl_stream_build_network_packet(bbl_stream *stream) {
eth.type = ETH_TYPE_IPV4;
eth.next = &ipv4;
ipv4.dst = session->ip_address;
ipv4.src = ctx->op.network_if->ip;
if(stream->config->ipv4_source_address) {
ipv4.src = stream->config->ipv4_source_address;
} else {
ipv4.src = ctx->op.network_if->ip;
}
ipv4.ttl = 64;
ipv4.tos = config->priority;
ipv4.protocol = PROTOCOL_IPV4_UDP;
@@ -299,7 +303,11 @@ bbl_stream_build_network_packet(bbl_stream *stream) {
eth.type = ETH_TYPE_IPV6;
eth.next = &ipv6;
ipv6.dst = session->ipv6_address;
ipv6.src = ctx->op.network_if->ip6.address;
if(*(uint64_t*)stream->config->ipv6_source_address) {
ipv6.src = stream->config->ipv6_source_address;
} else {
ipv6.src = ctx->op.network_if->ip6.address;
}
ipv6.ttl = 64;
ipv6.tos = config->priority;
ipv6.protocol = IPV6_NEXT_HEADER_UDP;
@@ -313,7 +321,11 @@ bbl_stream_build_network_packet(bbl_stream *stream) {
eth.type = ETH_TYPE_IPV6;
eth.next = &ipv6;
ipv6.dst = session->delegated_ipv6_address;
ipv6.src = ctx->op.network_if->ip6.address;
if(*(uint64_t*)stream->config->ipv6_source_address) {
ipv6.src = stream->config->ipv6_source_address;
} else {
ipv6.src = ctx->op.network_if->ip6.address;
}
ipv6.ttl = 64;
ipv6.tos = config->priority;
ipv6.protocol = IPV6_NEXT_HEADER_UDP;