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Add MPLS experimental field (#265)

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* Add experimental field to MPLS PDU

See RFC-4950 https://tools.ietf.org/html/rfc4950

* Add tests for MPLS' experimental field
This commit is contained in:
Santiago Alessandri
2017-11-04 12:08:34 -07:00
committed by Matias Fontanini
parent c07cd40234
commit 8e50756afa
3 changed files with 35 additions and 8 deletions
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8
src/mpls.cpp
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@@ -76,11 +76,15 @@ void MPLS::label(small_uint<20> value) {
const uint16_t label_high = Endian::host_to_be<uint16_t>(label_value >> 4);
const uint8_t label_low = (label_value << 4) & 0xf0;
header_.label_high = label_high & 0xffff;
header_.label_low_and_bottom = (header_.label_low_and_bottom & 0x0f) | label_low;
header_.label_low_exp_and_bottom = (header_.label_low_exp_and_bottom & 0x0f) | label_low;
}
void MPLS::experimental(small_uint<3> value) {
header_.label_low_exp_and_bottom = (header_.label_low_exp_and_bottom & 0xf1) | (value << 1);
}
void MPLS::bottom_of_stack(small_uint<1> value) {
header_.label_low_and_bottom = (header_.label_low_and_bottom & 0xfe) | value;
header_.label_low_exp_and_bottom = (header_.label_low_exp_and_bottom & 0xfe) | value;
}
void MPLS::ttl(uint8_t value) {