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claw back some space from signing policies

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This commit is contained in:
nomdetom
2026-07-22 14:36:06 +01:00
parent f90c1340de
commit 583248c19d
1 changed files with 8 additions and 6 deletions
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src/mesh/Router.cpp
+8 -6
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@@ -70,8 +70,8 @@ static uint8_t bytes[MAX_LORA_PAYLOAD_LEN + 1] __attribute__((__aligned__));
struct RoutingAuthCache {
bool valid = false;
meshtastic_Config_SecurityConfig_PacketSignaturePolicy policy =
meshtastic_Config_SecurityConfig_PacketSignaturePolicy_PACKET_SIGNATURE_POLICY_BALANCED;
// Deliberately NOT initialized in-class as this eats flash space.
meshtastic_Config_SecurityConfig_PacketSignaturePolicy policy;
meshtastic_MeshPacket wire = meshtastic_MeshPacket_init_zero;
meshtastic_MeshPacket authenticated = meshtastic_MeshPacket_init_zero;
};
@@ -161,6 +161,8 @@ Router::Router() : concurrency::OSThread("Router"), fromRadioQueue(MAX_RX_FROMRA
cryptLock = new concurrency::Lock();
if (!routingAuthCacheLock)
routingAuthCacheLock = new concurrency::Lock();
// Runtime default for the auth-cache snapshot policy. Keep it here, saves flash.
routingAuthCache.policy = meshtastic_Config_SecurityConfig_PacketSignaturePolicy_PACKET_SIGNATURE_POLICY_BALANCED;
}
bool Router::shouldDecrementHopLimit(const meshtastic_MeshPacket *p)
@@ -705,7 +707,7 @@ RoutingAuthVerdict passesRoutingAuthGate(meshtastic_MeshPacket *p)
#if !(MESHTASTIC_EXCLUDE_PKI) && !(MESHTASTIC_EXCLUDE_XEDDSA)
concurrency::LockGuard g(cryptLock);
if (!checkXeddsaReceivePolicy(&authCandidate)) {
LOG_WARN("Already-decoded packet rejected by signature policy before routing state update");
LOG_WARN("Already-decoded packet rejected by signature policy");
return RoutingAuthVerdict::REJECT;
}
#endif
@@ -716,15 +718,15 @@ RoutingAuthVerdict passesRoutingAuthGate(meshtastic_MeshPacket *p)
}
const DecodeState state = perhapsDecode(&authCandidate);
if (state == DecodeState::DECODE_POLICY_REJECT) {
LOG_WARN("Packet rejected by signature policy before routing state update");
LOG_WARN("Packet rejected by signature policy");
return RoutingAuthVerdict::REJECT;
}
if (state == DecodeState::DECODE_FATAL) {
LOG_WARN("Fatal decode error before routing state update");
LOG_WARN("Fatal decode error, dropping packet");
return RoutingAuthVerdict::REJECT;
}
if (state == DecodeState::DECODE_FAILURE) {
LOG_WARN("Decryptable packet failed decoding/authentication before routing state update");
LOG_WARN("Decryptable packet failed decoding, dropping packet");
return RoutingAuthVerdict::REJECT;
}