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wgengine, net/packet, cmd/tailscale: add ICMP echo

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Updates tailscale/corp#754

Signed-off-by: James Tucker <james@tailscale.com>
This commit is contained in:
James Tucker
2022-04-21 18:49:01 -07:00
committed by James Tucker
parent 66f9292835
commit ae483d3446
14 changed files with 215 additions and 45 deletions
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19
tailcfg/tailcfg.go
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@ -1217,6 +1217,19 @@ type DNSRecord struct {
Value string
}
// PingType is a string representing the kind of ping to perform.
type PingType string
const (
// PingDisco performs a ping, without involving IP at either end.
PingDisco PingType = "disco"
// PingTSMP performs a ping, using the IP layer, but avoiding the OS IP stack.
PingTSMP PingType = "TSMP"
// PingICMP performs a ping between two tailscale nodes using ICMP that is
// received by the target systems IP stack.
PingICMP PingType = "ICMP"
)
// PingRequest with no IP and Types is a request to send an HTTP request to prove the
// long-polling client is still connected.
// PingRequest with Types and IP, will send a ping to the IP and send a POST
@ -1234,8 +1247,8 @@ type PingRequest struct {
// For failure cases, the client will log regardless.
Log bool `json:",omitempty"`
// Types is the types of ping that is initiated. Can be TSMP, ICMP or disco.
// Types will be comma separated, such as TSMP,disco.
// Types is the types of ping that are initiated. Can be any PingType, comma
// separated, e.g. "disco,TSMP"
Types string
// IP is the ping target.
@ -1246,7 +1259,7 @@ type PingRequest struct {
// PingResponse provides result information for a TSMP or Disco PingRequest.
// Typically populated from an ipnstate.PingResult used in `tailscale ping`.
type PingResponse struct {
Type string // ping type, such as TSMP or disco.
Type PingType // ping type, such as TSMP or disco.
IP string `json:",omitempty"` // ping destination
NodeIP string `json:",omitempty"` // Tailscale IP of node handling IP (different for subnet routers)