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have the switch queue drop packts to ourself when the total size of all packets is at least queueTotalMaxSize, instead of an arbitrary unconfigurable packet count

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This commit is contained in:
Arceliar 2019-08-04 16:16:49 -05:00
parent 6803f209b0
commit c55d7b4705
1 changed files with 8 additions and 2 deletions
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10
src/yggdrasil/switch.go
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@ -814,17 +814,23 @@ func (t *switchTable) doWorker() {
go func() { go func() {
// Keep taking packets from the idle worker and sending them to the above whenever it's idle, keeping anything extra in a (fifo, head-drop) buffer // Keep taking packets from the idle worker and sending them to the above whenever it's idle, keeping anything extra in a (fifo, head-drop) buffer
var buf [][]byte var buf [][]byte
var size int
for { for {
buf = append(buf, <-t.toRouter) bs := <-t.toRouter
size += len(bs)
buf = append(buf, bs)
for len(buf) > 0 { for len(buf) > 0 {
select { select {
case bs := <-t.toRouter: case bs := <-t.toRouter:
size += len(bs)
buf = append(buf, bs) buf = append(buf, bs)
for len(buf) > 32 { for size > int(t.queueTotalMaxSize) {
size -= len(buf[0])
util.PutBytes(buf[0]) util.PutBytes(buf[0])
buf = buf[1:] buf = buf[1:]
} }
case sendingToRouter <- buf[0]: case sendingToRouter <- buf[0]:
size -= len(buf[0])
buf = buf[1:] buf = buf[1:]
} }
} }