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wgengine,ipn,cmd/tailscale: add size option to ping (#8739)

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This adds the capability to pad disco ping message payloads to reach a
specified size. It also plumbs it through to the tailscale ping -size
flag.

Disco pings used for actual endpoint discovery do not use this yet.

Updates #311.

Signed-off-by: salman <salman@tailscale.com>
Co-authored-by: Val <valerie@tailscale.com>
This commit is contained in:
salman aljammaz
2023-08-08 13:11:28 +01:00
committed by GitHub
parent 49896cbdfa
commit 25a7204bb4
12 changed files with 125 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files
wgengine/userspace.go
+2 -2
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@@ -1211,7 +1211,7 @@ func (e *userspaceEngine) UpdateStatus(sb *ipnstate.StatusBuilder) {
e.magicConn.UpdateStatus(sb)
}
func (e *userspaceEngine) Ping(ip netip.Addr, pingType tailcfg.PingType, cb func(*ipnstate.PingResult)) {
func (e *userspaceEngine) Ping(ip netip.Addr, pingType tailcfg.PingType, size int, cb func(*ipnstate.PingResult)) {
res := &ipnstate.PingResult{IP: ip.String()}
pip, ok := e.PeerForIP(ip)
if !ok {
@@ -1231,7 +1231,7 @@ func (e *userspaceEngine) Ping(ip netip.Addr, pingType tailcfg.PingType, cb func
e.logf("ping(%v): sending %v ping to %v %v ...", ip, pingType, peer.Key.ShortString(), peer.ComputedName)
switch pingType {
case "disco":
e.magicConn.Ping(peer, res, cb)
e.magicConn.Ping(peer, res, size, cb)
case "TSMP":
e.sendTSMPPing(ip, peer, res, cb)
case "ICMP":