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device: allow reducing queue constants on iOS

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Heavier network extensions might require the wireguard-go component to
use less ram, so let users of this reduce these as needed.

At some point we'll put this behind a configuration method of sorts, but
for now, just expose the consts as vars.

Requested-by: Josh Bleecher Snyder <josh@tailscale.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2021-05-22 00:57:42 +02:00
parent 99e8b4ba60
commit c27ff9b9f6
3 changed files with 12 additions and 11 deletions
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20
device/queueconstants_ios.go
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@ -7,13 +7,15 @@
package device
/* Fit within memory limits for iOS's Network Extension API, which has stricter requirements */
const (
QueueStagedSize = 128
QueueOutboundSize = 1024
QueueInboundSize = 1024
QueueHandshakeSize = 1024
MaxSegmentSize = 1700
PreallocatedBuffersPerPool = 1024
// Fit within memory limits for iOS's Network Extension API, which has stricter requirements.
// These are vars instead of consts, because heavier network extensions might want to reduce
// them further.
var (
QueueStagedSize = 128
QueueOutboundSize = 1024
QueueInboundSize = 1024
QueueHandshakeSize = 1024
PreallocatedBuffersPerPool uint32 = 1024
)
const MaxSegmentSize = 1700