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| author | Adam Ierymenko <adam.ierymenko@gmail.com> | 2017-09-01 16:25:34 -0700 |
|---|---|---|
| committer | Adam Ierymenko <adam.ierymenko@gmail.com> | 2017-09-01 16:25:34 -0700 |
| commit | f8014413a376551b7853baae81072f969a755e46 (patch) | |
| tree | f19118672d85310f85cb103af24742af6ca52269 /node/Switch.cpp | |
| parent | 2d858b05ac8554ba11374fefaeb583a0bbc0546b (diff) | |
| download | infinitytier-f8014413a376551b7853baae81072f969a755e46.tar.gz infinitytier-f8014413a376551b7853baae81072f969a755e46.zip | |
Add UDP MTU configurability.
Diffstat (limited to 'node/Switch.cpp')
| -rw-r--r-- | node/Switch.cpp | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/node/Switch.cpp b/node/Switch.cpp index 952bdef8..f46b3e73 100644 --- a/node/Switch.cpp +++ b/node/Switch.cpp @@ -722,10 +722,13 @@ bool Switch::_trySend(void *tPtr,Packet &packet,bool encrypt) return false; } - unsigned int chunkSize = std::min(packet.size(),(unsigned int)ZT_UDP_DEFAULT_PAYLOAD_MTU); + unsigned int mtu = ZT_DEFAULT_PHYSMTU; + uint64_t trustedPathId = 0; + RR->topology->getOutboundPathInfo(viaPath->address(),mtu,trustedPathId); + + unsigned int chunkSize = std::min(packet.size(),mtu); packet.setFragmented(chunkSize < packet.size()); - const uint64_t trustedPathId = RR->topology->getOutboundPathTrust(viaPath->address()); if (trustedPathId) { packet.setTrusted(trustedPathId); } else { @@ -737,13 +740,13 @@ bool Switch::_trySend(void *tPtr,Packet &packet,bool encrypt) // Too big for one packet, fragment the rest unsigned int fragStart = chunkSize; unsigned int remaining = packet.size() - chunkSize; - unsigned int fragsRemaining = (remaining / (ZT_UDP_DEFAULT_PAYLOAD_MTU - ZT_PROTO_MIN_FRAGMENT_LENGTH)); - if ((fragsRemaining * (ZT_UDP_DEFAULT_PAYLOAD_MTU - ZT_PROTO_MIN_FRAGMENT_LENGTH)) < remaining) + unsigned int fragsRemaining = (remaining / (mtu - ZT_PROTO_MIN_FRAGMENT_LENGTH)); + if ((fragsRemaining * (mtu - ZT_PROTO_MIN_FRAGMENT_LENGTH)) < remaining) ++fragsRemaining; const unsigned int totalFragments = fragsRemaining + 1; for(unsigned int fno=1;fno<totalFragments;++fno) { - chunkSize = std::min(remaining,(unsigned int)(ZT_UDP_DEFAULT_PAYLOAD_MTU - ZT_PROTO_MIN_FRAGMENT_LENGTH)); + chunkSize = std::min(remaining,(unsigned int)(mtu - ZT_PROTO_MIN_FRAGMENT_LENGTH)); Packet::Fragment frag(packet,fragStart,chunkSize,fno,totalFragments); viaPath->send(RR,tPtr,frag.data(),frag.size(),now); fragStart += chunkSize; |