TheArchive/yggdrasil-go
1
0
Fork 0
mirror of https://github.com/yggdrasil-network/yggdrasil-go.git synced 2024-11-23 18:15:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

Ensure no memory allocations happen at hot path

Browse Source
This commit is contained in:
cathugger 2018-07-30 12:43:34 +00:00
parent c4e6894d6a
commit 67b8a7a53d
No known key found for this signature in database
GPG Key ID: 9BADDA2DAF6F01A8
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/yggdrasil/session.go
View File

@ -72,7 +72,8 @@ func (s *sessionInfo) update(p *sessionPing) bool {
if p.MTU >= 1280 || p.MTU == 0 {
s.theirMTU = p.MTU
}
s.coords = append([]byte{}, p.Coords...)
// allocate enough space for additional coords
s.coords = append(make([]byte, 0, len(p.Coords)+11), p.Coords...)
now := time.Now()
s.time = now
s.tstamp = p.Tstamp
@ -426,8 +427,8 @@ func (sinfo *sessionInfo) doSend(bs []byte) {
// To prevent using empty session keys
return
}
var coords []byte
coords = append(coords, sinfo.coords...)
// code isn't multithreaded so appending to this is safe
coords := sinfo.coords
// Read IPv6 flowlabel field (20 bits).
// Assumes packet at least contains IPv6 header.
flowkey := uint64(bs[1]&0x0f)<<16 | uint64(bs[2])<<8 | uint64(bs[3])