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* support for sending 5-byte ACKs

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This commit is contained in:
Scott Powell
2026-05-17 22:10:13 +10:00
parent 39b333656b
commit f6e6fdaa05
5 changed files with 31 additions and 69 deletions
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src/Mesh.cpp
+8 -11
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@@ -361,13 +361,10 @@ DispatcherAction Mesh::forwardMultipartDirect(Packet* pkt) {
void Mesh::routeDirectRecvAcks(Packet* packet, uint32_t delay_millis) {
if (!packet->isMarkedDoNotRetransmit()) {
uint32_t crc;
memcpy(&crc, packet->payload, 4);
uint8_t extra = getExtraAckTransmitCount();
while (extra > 0) {
delay_millis += getDirectRetransmitDelay(packet) + 300;
auto a1 = createMultiAck(crc, extra);
auto a1 = createMultiAck(packet->payload, packet->payload_len, extra);
if (a1) {
a1->path_len = Packet::copyPath(a1->path, packet->path, packet->path_len);
a1->header &= ~PH_ROUTE_MASK;
@@ -377,7 +374,7 @@ void Mesh::routeDirectRecvAcks(Packet* packet, uint32_t delay_millis) {
extra--;
}
auto a2 = createAck(crc);
auto a2 = createAck(packet->payload, packet->payload_len);
if (a2) {
a2->path_len = Packet::copyPath(a2->path, packet->path, packet->path_len);
a2->header &= ~PH_ROUTE_MASK;
@@ -543,7 +540,7 @@ Packet* Mesh::createGroupDatagram(uint8_t type, const GroupChannel& channel, con
return packet;
}
Packet* Mesh::createAck(uint32_t ack_crc) {
Packet* Mesh::createAck(const uint8_t* ack, uint8_t len) {
Packet* packet = obtainNewPacket();
if (packet == NULL) {
MESH_DEBUG_PRINTLN("%s Mesh::createAck(): error, packet pool empty", getLogDateTime());
@@ -551,13 +548,13 @@ Packet* Mesh::createAck(uint32_t ack_crc) {
}
packet->header = (PAYLOAD_TYPE_ACK << PH_TYPE_SHIFT); // ROUTE_TYPE_* set later
memcpy(packet->payload, &ack_crc, 4);
packet->payload_len = 4;
memcpy(packet->payload, ack, len);
packet->payload_len = len;
return packet;
}
Packet* Mesh::createMultiAck(uint32_t ack_crc, uint8_t remaining) {
Packet* Mesh::createMultiAck(const uint8_t* ack, uint8_t len, uint8_t remaining) {
Packet* packet = obtainNewPacket();
if (packet == NULL) {
MESH_DEBUG_PRINTLN("%s Mesh::createMultiAck(): error, packet pool empty", getLogDateTime());
@@ -566,8 +563,8 @@ Packet* Mesh::createMultiAck(uint32_t ack_crc, uint8_t remaining) {
packet->header = (PAYLOAD_TYPE_MULTIPART << PH_TYPE_SHIFT); // ROUTE_TYPE_* set later
packet->payload[0] = (remaining << 4) | PAYLOAD_TYPE_ACK;
memcpy(&packet->payload[1], &ack_crc, 4);
packet->payload_len = 5;
memcpy(&packet->payload[1], ack, len);
packet->payload_len = 1 + len;
return packet;
}