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mesh: extract mesh_lower_transport
This commit is contained in:
Matthias Ringwald
parent
f4e1709172
commit
f33895f322
702
src/ble/mesh/mesh_lower_transport.c
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702
src/ble/mesh/mesh_lower_transport.c
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/*
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* Copyright (C) 2014 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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#define __BTSTACK_FILE__ "mesh_lower_transport.c"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "ble/mesh/beacon.h"
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#include "mesh_transport.h"
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#include "btstack_util.h"
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#include "btstack_memory.h"
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#include "mesh_peer.h"
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#include "mesh_lower_transport.h"
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static uint16_t primary_element_address;
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static void mesh_print_hex(const char * name, const uint8_t * data, uint16_t len){
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printf("%-20s ", name);
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printf_hexdump(data, len);
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}
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// static void mesh_print_x(const char * name, uint32_t value){
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// printf("%20s: 0x%x", name, (int) value);
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// }
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// utility
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// Transport PDU Getter
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uint16_t mesh_transport_nid(mesh_transport_pdu_t * transport_pdu){
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return transport_pdu->network_header[0] & 0x7f;
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}
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uint16_t mesh_transport_ctl(mesh_transport_pdu_t * transport_pdu){
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return transport_pdu->network_header[1] >> 7;
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}
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uint16_t mesh_transport_ttl(mesh_transport_pdu_t * transport_pdu){
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return transport_pdu->network_header[1] & 0x7f;
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}
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uint32_t mesh_transport_seq(mesh_transport_pdu_t * transport_pdu){
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return big_endian_read_24(transport_pdu->network_header, 2);
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}
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uint32_t mesh_transport_seq_zero(mesh_transport_pdu_t * transport_pdu){
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return transport_pdu->seq_zero;
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}
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uint16_t mesh_transport_src(mesh_transport_pdu_t * transport_pdu){
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return big_endian_read_16(transport_pdu->network_header, 5);
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}
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uint16_t mesh_transport_dst(mesh_transport_pdu_t * transport_pdu){
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return big_endian_read_16(transport_pdu->network_header, 7);
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}
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void mesh_transport_set_nid_ivi(mesh_transport_pdu_t * transport_pdu, uint8_t nid_ivi){
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transport_pdu->network_header[0] = nid_ivi;
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}
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void mesh_transport_set_ctl_ttl(mesh_transport_pdu_t * transport_pdu, uint8_t ctl_ttl){
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transport_pdu->network_header[1] = ctl_ttl;
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}
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void mesh_transport_set_seq(mesh_transport_pdu_t * transport_pdu, uint32_t seq){
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big_endian_store_24(transport_pdu->network_header, 2, seq);
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}
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void mesh_transport_set_src(mesh_transport_pdu_t * transport_pdu, uint16_t src){
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big_endian_store_16(transport_pdu->network_header, 5, src);
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}
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void mesh_transport_set_dest(mesh_transport_pdu_t * transport_pdu, uint16_t dest){
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big_endian_store_16(transport_pdu->network_header, 7, dest);
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}
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// lower transport
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// prototypes
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static void mesh_lower_transport_run(void);
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static void mesh_lower_transport_abort_transmission(void);
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// state
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static int lower_transport_retry_count;
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static uint32_t lower_transport_seq;
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// lower transport incoming
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static btstack_linked_list_t lower_transport_incoming;
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static mesh_transport_pdu_t * lower_transport_outgoing_pdu;
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static mesh_network_pdu_t * lower_transport_outgoing_segment;
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static uint16_t lower_transport_outgoing_seg_o;
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// helper network layer, temp
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static uint8_t mesh_network_send(uint16_t netkey_index, uint8_t ctl, uint8_t ttl, uint32_t seq, uint16_t src, uint16_t dest, const uint8_t * transport_pdu_data, uint8_t transport_pdu_len){
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// "3.4.5.2: The output filter of the interface connected to advertising or GATT bearers shall drop all messages with TTL value set to 1."
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// if (ttl <= 1) return 0;
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// TODO: check transport_pdu_len depending on ctl
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// lookup network by netkey_index
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const mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index);
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if (!network_key) return 0;
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// allocate network_pdu
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mesh_network_pdu_t * network_pdu = mesh_network_pdu_get();
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if (!network_pdu) return 0;
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// setup network_pdu
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mesh_network_setup_pdu(network_pdu, netkey_index, network_key->nid, ctl, ttl, seq, src, dest, transport_pdu_data, transport_pdu_len);
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// send network_pdu
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mesh_network_send_pdu(network_pdu);
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return 0;
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}
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static void mesh_lower_transport_process_unsegmented_control_message(mesh_network_pdu_t *network_pdu){
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uint8_t * lower_transport_pdu = mesh_network_pdu_data(network_pdu);
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uint8_t opcode = lower_transport_pdu[0];
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printf("Unsegmented Control message, outgoing message %p, opcode %x\n", lower_transport_outgoing_pdu, opcode);
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uint16_t seq_zero_pdu;
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uint16_t seq_zero_out;
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uint32_t block_ack;
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switch (opcode){
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case 0:
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if (lower_transport_outgoing_pdu == NULL) break;
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seq_zero_pdu = big_endian_read_16(lower_transport_pdu, 1) >> 2;
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seq_zero_out = mesh_transport_seq(lower_transport_outgoing_pdu) & 0x1fff;
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block_ack = big_endian_read_32(lower_transport_pdu, 3);
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printf("[+] Segment Acknowledgment message with seq_zero %06x, block_ack %08x - outgoing seq %06x, block_ack %08x\n",
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seq_zero_pdu, block_ack, seq_zero_out, lower_transport_outgoing_pdu->block_ack);
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if (block_ack == 0){
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// If a Segment Acknowledgment message with the BlockAck field set to 0x00000000 is received,
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// then the Upper Transport PDU shall be immediately cancelled and the higher layers shall be notified that
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// the Upper Transport PDU has been cancelled.
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printf("[+] Block Ack == 0 => Abort\n");
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mesh_lower_transport_abort_transmission();
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break;
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}
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if (seq_zero_pdu != seq_zero_out){
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printf("[!] Seq Zero doesn't match\n");
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break;
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}
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lower_transport_outgoing_pdu->block_ack &= ~block_ack;
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printf("[+] Updated block_ack %08x\n", lower_transport_outgoing_pdu->block_ack);
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if (lower_transport_outgoing_pdu->block_ack == 0){
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printf("[+] Sent complete\n");
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mesh_lower_transport_abort_transmission();
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}
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mesh_network_message_processed_by_higher_layer(network_pdu);
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break;
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default:
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mesh_upper_transport_unsegmented_message_received(network_pdu);
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break;
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}
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}
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// ack / incomplete message
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static void mesh_lower_transport_setup_segmented_acknowledge_message(uint8_t * data, uint8_t obo, uint16_t seq_zero, uint32_t block_ack){
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// printf("ACK Upper Transport, seq_zero %x\n", seq_zero);
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data[0] = 0; // SEG = 0, Opcode = 0
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big_endian_store_16( data, 1, (obo << 15) | (seq_zero << 2) | 0); // OBO, SeqZero, RFU
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big_endian_store_32( data, 3, block_ack);
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mesh_print_hex("ACK Upper Transport", data, 7);
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}
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static void mesh_lower_transport_send_ack(uint16_t netkey_index, uint8_t ttl, uint16_t dest, uint16_t seq_zero, uint32_t block_ack){
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// setup ack message
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uint8_t ack_msg[7];
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mesh_lower_transport_setup_segmented_acknowledge_message(ack_msg, 0, seq_zero, block_ack);
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// send ack
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int i;
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for (i=0;i<1;i++){
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mesh_network_send(netkey_index, 1, ttl, mesh_lower_transport_next_seq(), primary_element_address, dest, ack_msg, sizeof(ack_msg));
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}
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}
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static void mesh_lower_transport_send_ack_for_transport_pdu(mesh_transport_pdu_t *transport_pdu){
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uint16_t seq_zero = mesh_transport_seq_zero(transport_pdu);
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uint8_t ttl = mesh_transport_ttl(transport_pdu);
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uint16_t dest = mesh_transport_src(transport_pdu);
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uint16_t netkey_index = transport_pdu->netkey_index;
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printf("mesh_transport_send_ack_for_transport_pdu %p with netkey_index %x, TTL = %u, SeqZero = %x, SRC = %x, DST = %x\n",
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transport_pdu, netkey_index, ttl, seq_zero, primary_element_address, dest);
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mesh_lower_transport_send_ack(netkey_index, ttl, dest, seq_zero, transport_pdu->block_ack);
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}
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static void mesh_lower_transport_send_ack_for_network_pdu(mesh_network_pdu_t *network_pdu, uint16_t seq_zero, uint32_t block_ack) {
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uint8_t ttl = mesh_network_ttl(network_pdu);
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uint16_t dest = mesh_network_src(network_pdu);
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uint16_t netkey_index = network_pdu->netkey_index;
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printf("mesh_transport_send_ack_for_network_pdu %p with netkey_index %x, TTL = %u, SeqZero = %x, SRC = %x, DST = %x\n",
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network_pdu, netkey_index, ttl, seq_zero, primary_element_address, dest);
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mesh_lower_transport_send_ack(netkey_index, ttl, dest, seq_zero, block_ack);
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}
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static void mesh_lower_transport_stop_acknowledgment_timer(mesh_transport_pdu_t *transport_pdu){
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if (!transport_pdu->acknowledgement_timer_active) return;
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transport_pdu->acknowledgement_timer_active = 0;
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btstack_run_loop_remove_timer(&transport_pdu->acknowledgement_timer);
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}
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static void mesh_lower_transport_stop_incomplete_timer(mesh_transport_pdu_t *transport_pdu){
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if (!transport_pdu->incomplete_timer_active) return;
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transport_pdu->incomplete_timer_active = 0;
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btstack_run_loop_remove_timer(&transport_pdu->incomplete_timer);
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}
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// stops timers and updates reassembly engine
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static void mesh_lower_transport_segmented_message_complete(mesh_transport_pdu_t *transport_pdu){
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// set flag
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transport_pdu->message_complete = 1;
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// stop timers
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mesh_lower_transport_stop_acknowledgment_timer(transport_pdu);
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mesh_lower_transport_stop_incomplete_timer(transport_pdu);
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// stop reassembly
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mesh_peer_t * peer = mesh_peer_for_addr(mesh_transport_src(transport_pdu));
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if (peer){
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peer->transport_pdu = NULL;
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}
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}
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static void mesh_lower_transport_rx_ack_timeout(btstack_timer_source_t *ts){
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mesh_transport_pdu_t * transport_pdu = (mesh_transport_pdu_t *) btstack_run_loop_get_timer_context(ts);
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printf("ACK: acknowledgement timer fired for %p, send ACK\n", transport_pdu);
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transport_pdu->acknowledgement_timer_active = 0;
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mesh_lower_transport_send_ack_for_transport_pdu(transport_pdu);
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}
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static void mesh_lower_transport_rx_incomplete_timeout(btstack_timer_source_t *ts){
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mesh_transport_pdu_t * transport_pdu = (mesh_transport_pdu_t *) btstack_run_loop_get_timer_context(ts);
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printf("mesh_transport_rx_incomplete_timeout for %p - give up\n", transport_pdu);
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mesh_lower_transport_segmented_message_complete(transport_pdu);
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// free message
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btstack_memory_mesh_transport_pdu_free(transport_pdu);
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}
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static void mesh_lower_transport_start_acknowledgment_timer(mesh_transport_pdu_t *transport_pdu, uint32_t timeout,
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void (*callback)(btstack_timer_source_t *ts)){
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printf("ACK: start ack timer for %p, timeout %u ms\n", transport_pdu, (int) timeout);
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btstack_run_loop_set_timer(&transport_pdu->acknowledgement_timer, timeout);
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btstack_run_loop_set_timer_handler(&transport_pdu->acknowledgement_timer, callback);
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btstack_run_loop_set_timer_context(&transport_pdu->acknowledgement_timer, transport_pdu);
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btstack_run_loop_add_timer(&transport_pdu->acknowledgement_timer);
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transport_pdu->acknowledgement_timer_active = 1;
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}
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static void mesh_lower_transport_restart_incomplete_timer(mesh_transport_pdu_t *transport_pdu, uint32_t timeout,
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void (*callback)(btstack_timer_source_t *ts)){
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printf("RX-(re)start incomplete timer for %p, timeout %u ms\n", transport_pdu, (int) timeout);
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if (transport_pdu->incomplete_timer_active){
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btstack_run_loop_remove_timer(&transport_pdu->incomplete_timer);
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}
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btstack_run_loop_set_timer(&transport_pdu->incomplete_timer, timeout);
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btstack_run_loop_set_timer_handler(&transport_pdu->incomplete_timer, callback);
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btstack_run_loop_set_timer_context(&transport_pdu->incomplete_timer, transport_pdu);
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btstack_run_loop_add_timer(&transport_pdu->incomplete_timer);
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transport_pdu->incomplete_timer_active = 1;
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}
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// abort outgoing transmission
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static void mesh_lower_transport_abort_transmission(void){
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// stop ack timers
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mesh_lower_transport_stop_acknowledgment_timer(lower_transport_outgoing_pdu);
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// free pdus
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btstack_memory_mesh_transport_pdu_free(lower_transport_outgoing_pdu);
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lower_transport_outgoing_pdu = NULL;
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btstack_memory_mesh_network_pdu_free(lower_transport_outgoing_segment);
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lower_transport_outgoing_segment = NULL;
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}
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static mesh_transport_pdu_t * mesh_lower_transport_pdu_for_segmented_message(mesh_network_pdu_t *network_pdu){
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uint16_t src = mesh_network_src(network_pdu);
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uint16_t seq_zero = ( big_endian_read_16(mesh_network_pdu_data(network_pdu), 1) >> 2) & 0x1fff;
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printf("mesh_transport_pdu_for_segmented_message: seq_zero %x\n", seq_zero);
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mesh_peer_t * peer = mesh_peer_for_addr(src);
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if (!peer) {
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return NULL;
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}
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printf("mesh_seq_zero_validate(%x, %x) -- last (%x, %x)\n", src, seq_zero, peer->address, peer->seq_zero);
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// reception of transport message ongoing
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if (peer->transport_pdu){
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// check if segment for same seq zero
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uint16_t active_seq_zero = mesh_transport_seq_zero(peer->transport_pdu);
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if (active_seq_zero == seq_zero) {
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printf("mesh_transport_pdu_for_segmented_message: segment for current transport pdu with SeqZero %x\n", active_seq_zero);
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return peer->transport_pdu;
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} else {
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// seq zero differs from current transport pdu, but current pdu is not complete
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printf("mesh_transport_pdu_for_segmented_message: drop segment. current transport pdu SeqZero %x, now %x\n", active_seq_zero, seq_zero);
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return NULL;
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}
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}
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// send ACK if segment for previously completed transport pdu (no ongoing reception, block ack is cleared)
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if ((seq_zero == peer->seq_zero) && (peer->block_ack != 0)){
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printf("mesh_transport_pdu_for_segmented_message: segment for last completed message. send ack\n");
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mesh_lower_transport_send_ack_for_network_pdu(network_pdu, seq_zero, peer->block_ack);
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return NULL;
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}
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// reconstruct lowest 24 bit of SeqAuth
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uint32_t seq = mesh_network_seq(network_pdu);
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uint32_t seq_auth = (seq & 0xffe000) | seq_zero;
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if (seq_auth > seq){
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seq_auth -= 0x2000;
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}
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// no transport pdu active, check if seq zero is new
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if (seq_auth > peer->seq_auth){
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mesh_transport_pdu_t * pdu = mesh_transport_pdu_get();
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if (!pdu) return NULL;
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// cache network pdu header
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memcpy(pdu->network_header, network_pdu->data, 9);
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// store lower 24 bit of SeqAuth for App / Device Nonce
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big_endian_store_24(pdu->network_header, 2, seq_auth);
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// store meta data in new pdu
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pdu->netkey_index = network_pdu->netkey_index;
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pdu->block_ack = 0;
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pdu->acknowledgement_timer_active = 0;
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pdu->message_complete = 0;
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pdu->seq_zero = seq_zero;
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// update peer info
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peer->transport_pdu = pdu;
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peer->seq_zero = seq_zero;
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peer->seq_auth = seq_auth;
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peer->block_ack = 0;
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printf("mesh_transport_pdu_for_segmented_message: setup transport pdu %p for src %x, seq %06x, seq_zero %x\n", pdu, src, mesh_transport_seq(pdu), seq_zero);
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return peer->transport_pdu;
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} else {
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// seq zero differs from current transport pdu
|
||||
printf("mesh_transport_pdu_for_segmented_message: drop segment for old seq %x\n", seq_zero);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_process_segment( mesh_transport_pdu_t * transport_pdu, mesh_network_pdu_t * network_pdu){
|
||||
|
||||
uint8_t * lower_transport_pdu = mesh_network_pdu_data(network_pdu);
|
||||
uint8_t lower_transport_pdu_len = mesh_network_pdu_len(network_pdu);
|
||||
|
||||
// get akf_aid & transmic
|
||||
transport_pdu->akf_aid = lower_transport_pdu[0];
|
||||
transport_pdu->transmic_len = lower_transport_pdu[1] & 0x80 ? 8 : 4;
|
||||
|
||||
// get seq_zero
|
||||
uint16_t seq_zero = ( big_endian_read_16(lower_transport_pdu, 1) >> 2) & 0x1fff;
|
||||
|
||||
// get seg fields
|
||||
uint8_t seg_o = ( big_endian_read_16(lower_transport_pdu, 2) >> 5) & 0x001f;
|
||||
uint8_t seg_n = lower_transport_pdu[3] & 0x1f;
|
||||
uint8_t segment_len = lower_transport_pdu_len - 4;
|
||||
uint8_t * segment_data = &lower_transport_pdu[4];
|
||||
|
||||
printf("mesh_lower_transport_process_segment: seq zero %04x, seg_o %02x, seg_n %02x, transmic len: %u\n", seq_zero, seg_o, seg_n, transport_pdu->transmic_len * 8);
|
||||
mesh_print_hex("Segment", segment_data, segment_len);
|
||||
|
||||
// store segment
|
||||
memcpy(&transport_pdu->data[seg_o * 12], segment_data, 12);
|
||||
// mark as received
|
||||
transport_pdu->block_ack |= (1<<seg_o);
|
||||
// last segment -> store len
|
||||
if (seg_o == seg_n){
|
||||
transport_pdu->len = (seg_n * 12) + segment_len;
|
||||
printf("Assembled payload len %u\n", transport_pdu->len);
|
||||
}
|
||||
|
||||
// check for complete
|
||||
int i;
|
||||
for (i=0;i<=seg_n;i++){
|
||||
if ( (transport_pdu->block_ack & (1<<i)) == 0) return;
|
||||
}
|
||||
|
||||
mesh_print_hex("Assembled payload", transport_pdu->data, transport_pdu->len);
|
||||
|
||||
// mark as done
|
||||
mesh_lower_transport_segmented_message_complete(transport_pdu);
|
||||
|
||||
// store block ack in peer info
|
||||
mesh_peer_t * peer = mesh_peer_for_addr(mesh_transport_src(transport_pdu));
|
||||
// TODO: check if NULL check can be removed
|
||||
if (peer){
|
||||
peer->block_ack = transport_pdu->block_ack;
|
||||
}
|
||||
|
||||
// send ack
|
||||
mesh_lower_transport_send_ack_for_transport_pdu(transport_pdu);
|
||||
|
||||
// forward to upper transport
|
||||
mesh_upper_transport_segmented_message_received(transport_pdu);
|
||||
}
|
||||
|
||||
void mesh_lower_transport_message_processed_by_higher_layer(mesh_pdu_t * pdu){
|
||||
switch (pdu->pdu_type){
|
||||
case MESH_PDU_TYPE_NETWORK:
|
||||
mesh_network_message_processed_by_higher_layer((mesh_network_pdu_t *) pdu);
|
||||
break;
|
||||
case MESH_PDU_TYPE_TRANSPORT:
|
||||
mesh_transport_pdu_free((mesh_transport_pdu_t *) pdu);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_network_pdu_sent(mesh_network_pdu_t *network_pdu);
|
||||
|
||||
static void mesh_lower_transport_tx_ack_timeout(btstack_timer_source_t * ts);
|
||||
|
||||
void mesh_lower_transport_received_message(mesh_network_callback_type_t callback_type, mesh_network_pdu_t *network_pdu){
|
||||
mesh_peer_t * peer;
|
||||
uint16_t src;
|
||||
uint16_t seq;
|
||||
switch (callback_type){
|
||||
case MESH_NETWORK_PDU_RECEIVED:
|
||||
src = mesh_network_src(network_pdu);
|
||||
seq = mesh_network_seq(network_pdu);
|
||||
peer = mesh_peer_for_addr(src);
|
||||
printf("Transport: received message. SRC %x, SEQ %x\n", src, seq);
|
||||
// validate seq
|
||||
if (peer && seq > peer->seq){
|
||||
// track seq
|
||||
peer->seq = seq;
|
||||
// add to list and go
|
||||
btstack_linked_list_add_tail(&lower_transport_incoming, (btstack_linked_item_t *) network_pdu);
|
||||
mesh_lower_transport_run();
|
||||
} else {
|
||||
// drop packet
|
||||
printf("Transport: drop packet - src/seq auth failed\n");
|
||||
mesh_network_message_processed_by_higher_layer(network_pdu);
|
||||
}
|
||||
break;
|
||||
case MESH_NETWORK_PDU_SENT:
|
||||
mesh_lower_transport_network_pdu_sent(network_pdu);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_setup_segment(mesh_transport_pdu_t *transport_pdu, uint8_t seg_o, mesh_network_pdu_t *network_pdu){
|
||||
|
||||
int ctl = mesh_transport_ctl(transport_pdu);
|
||||
uint16_t max_segment_len = ctl ? 8 : 12; // control 8 bytes (64 bit NetMic), access 12 bytes (32 bit NetMIC)
|
||||
|
||||
uint32_t seq = mesh_lower_transport_next_seq();
|
||||
uint16_t seq_zero = mesh_transport_seq(transport_pdu) & 0x01fff;
|
||||
uint8_t seg_n = (transport_pdu->len - 1) / max_segment_len;
|
||||
uint8_t szmic = ((!ctl) && (transport_pdu->transmic_len == 8)) ? 1 : 0; // only 1 for access messages with 64 bit TransMIC
|
||||
uint8_t nid = mesh_transport_nid(transport_pdu);
|
||||
uint8_t ttl = mesh_transport_ttl(transport_pdu);
|
||||
uint16_t src = mesh_transport_src(transport_pdu);
|
||||
uint16_t dest = mesh_transport_dst(transport_pdu);
|
||||
|
||||
// current segment.
|
||||
uint16_t seg_offset = seg_o * max_segment_len;
|
||||
|
||||
uint8_t lower_transport_pdu_data[16];
|
||||
lower_transport_pdu_data[0] = 0x80 | transport_pdu->akf_aid;
|
||||
big_endian_store_24(lower_transport_pdu_data, 1, (szmic << 23) | (seq_zero << 10) | (seg_o << 5) | seg_n);
|
||||
uint16_t segment_len = btstack_min(transport_pdu->len - seg_offset, max_segment_len);
|
||||
memcpy(&lower_transport_pdu_data[4], &transport_pdu->data[seg_offset], segment_len);
|
||||
uint16_t lower_transport_pdu_len = 4 + segment_len;
|
||||
|
||||
mesh_network_setup_pdu(network_pdu, transport_pdu->netkey_index, nid, 0, ttl, seq, src, dest, lower_transport_pdu_data, lower_transport_pdu_len);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_send_next_segment(void){
|
||||
if (!lower_transport_outgoing_pdu) return;
|
||||
|
||||
int ctl = mesh_transport_ctl(lower_transport_outgoing_pdu);
|
||||
uint16_t max_segment_len = ctl ? 8 : 12; // control 8 bytes (64 bit NetMic), access 12 bytes (32 bit NetMIC)
|
||||
uint8_t seg_n = (lower_transport_outgoing_pdu->len - 1) / max_segment_len;
|
||||
|
||||
// find next unacknowledged segement
|
||||
while ((lower_transport_outgoing_seg_o <= seg_n) && ((lower_transport_outgoing_pdu->block_ack & (1 << lower_transport_outgoing_seg_o)) == 0)){
|
||||
lower_transport_outgoing_seg_o++;
|
||||
}
|
||||
|
||||
if (lower_transport_outgoing_seg_o > seg_n){
|
||||
printf("[+] Upper transport, send segmented pdu complete (dst %x)\n", mesh_transport_dst(lower_transport_outgoing_pdu));
|
||||
lower_transport_outgoing_seg_o = 0;
|
||||
|
||||
// done for unicast, ack timer already set, too
|
||||
if (mesh_network_address_unicast(mesh_transport_dst(lower_transport_outgoing_pdu))) return;
|
||||
|
||||
// done, more?
|
||||
if (lower_transport_retry_count == 0){
|
||||
printf("[+] Upper transport, message unacknowledged -> free\n");
|
||||
// note: same as in seg ack handling code
|
||||
btstack_memory_mesh_transport_pdu_free(lower_transport_outgoing_pdu);
|
||||
lower_transport_outgoing_pdu = NULL;
|
||||
btstack_memory_mesh_network_pdu_free(lower_transport_outgoing_segment);
|
||||
lower_transport_outgoing_segment = NULL;
|
||||
return;
|
||||
}
|
||||
|
||||
// start retry
|
||||
printf("[+] Upper transport, message unacknowledged retry count %u\n", lower_transport_retry_count);
|
||||
lower_transport_retry_count--;
|
||||
}
|
||||
|
||||
if (mesh_network_address_unicast(mesh_transport_dst(lower_transport_outgoing_pdu))){
|
||||
// restart acknowledgment timer for unicast dst
|
||||
// - "This timer shall be set to a minimum of 200 + 50 * TTL milliseconds."
|
||||
if (lower_transport_outgoing_pdu->acknowledgement_timer_active){
|
||||
btstack_run_loop_remove_timer(&lower_transport_outgoing_pdu->incomplete_timer);
|
||||
lower_transport_outgoing_pdu->acknowledgement_timer_active = 0;
|
||||
}
|
||||
uint32_t timeout = 200 + 50 * mesh_transport_ttl(lower_transport_outgoing_pdu);
|
||||
mesh_lower_transport_start_acknowledgment_timer(lower_transport_outgoing_pdu, timeout,
|
||||
&mesh_lower_transport_tx_ack_timeout);
|
||||
}
|
||||
|
||||
mesh_lower_transport_setup_segment(lower_transport_outgoing_pdu, lower_transport_outgoing_seg_o,
|
||||
lower_transport_outgoing_segment);
|
||||
|
||||
printf("[+] Upper transport, send segmented pdu: seg_o %x, seg_n %x\n", lower_transport_outgoing_seg_o, seg_n);
|
||||
mesh_print_hex("LowerTransportPDU", lower_transport_outgoing_segment->data, lower_transport_outgoing_segment->len);
|
||||
|
||||
// next segment
|
||||
lower_transport_outgoing_seg_o++;
|
||||
|
||||
// send network pdu
|
||||
mesh_network_send_pdu(lower_transport_outgoing_segment);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_network_pdu_sent(mesh_network_pdu_t *network_pdu){
|
||||
if (lower_transport_outgoing_segment == network_pdu){
|
||||
mesh_lower_transport_send_next_segment();
|
||||
} else {
|
||||
btstack_memory_mesh_network_pdu_free(network_pdu);
|
||||
}
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_send_segmented_pdu_once(mesh_transport_pdu_t *transport_pdu){
|
||||
|
||||
if (lower_transport_retry_count == 0){
|
||||
printf("[!] Upper transport, send segmented pdu failed, retries exhausted\n");
|
||||
return;
|
||||
}
|
||||
|
||||
// chop into chunks
|
||||
printf("[+] Upper transport, send segmented pdu (retry count %u)\n", lower_transport_retry_count);
|
||||
lower_transport_retry_count--;
|
||||
|
||||
// allocate network_pdu
|
||||
mesh_network_pdu_t * network_pdu = mesh_network_pdu_get();
|
||||
if (!network_pdu) return;
|
||||
|
||||
// setup
|
||||
lower_transport_outgoing_pdu = transport_pdu;
|
||||
lower_transport_outgoing_segment = network_pdu;
|
||||
lower_transport_outgoing_seg_o = 0;
|
||||
|
||||
// setup block ack - set bit for segment to send, clear on ack
|
||||
int ctl = mesh_transport_ctl(lower_transport_outgoing_pdu);
|
||||
uint16_t max_segment_len = ctl ? 8 : 12; // control 8 bytes (64 bit NetMic), access 12 bytes (32 bit NetMIC)
|
||||
uint8_t seg_n = (lower_transport_outgoing_pdu->len - 1) / max_segment_len;
|
||||
if (seg_n == 31){
|
||||
transport_pdu->block_ack = -1;
|
||||
} else {
|
||||
transport_pdu->block_ack = (1 << (seg_n+1)) - 1;
|
||||
}
|
||||
|
||||
// start sending
|
||||
mesh_lower_transport_send_next_segment();
|
||||
}
|
||||
|
||||
void mesh_lower_transport_send_segmented_pdu(mesh_transport_pdu_t *transport_pdu){
|
||||
lower_transport_retry_count = 2;
|
||||
mesh_lower_transport_send_segmented_pdu_once(transport_pdu);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_tx_ack_timeout(btstack_timer_source_t * ts){
|
||||
mesh_transport_pdu_t * transport_pdu = (mesh_transport_pdu_t *) btstack_run_loop_get_timer_context(ts);
|
||||
printf("[+] Lower transport, acknowledgement timer fired for %p\n", transport_pdu);
|
||||
transport_pdu->acknowledgement_timer_active = 0;
|
||||
lower_transport_outgoing_seg_o = 0;
|
||||
mesh_lower_transport_send_next_segment();
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_run(void){
|
||||
while(1){
|
||||
int done = 1;
|
||||
|
||||
if (!btstack_linked_list_empty(&lower_transport_incoming)){
|
||||
done = 0;
|
||||
// peek at next message
|
||||
mesh_network_pdu_t * network_pdu = (mesh_network_pdu_t *) btstack_linked_list_get_first_item(&lower_transport_incoming);
|
||||
// segmented?
|
||||
if (mesh_network_segmented(network_pdu)){
|
||||
mesh_transport_pdu_t * transport_pdu = mesh_lower_transport_pdu_for_segmented_message(network_pdu);
|
||||
if (!transport_pdu) return;
|
||||
(void) btstack_linked_list_pop(&lower_transport_incoming);
|
||||
// start acknowledgment timer if inactive
|
||||
if (transport_pdu->acknowledgement_timer_active == 0){
|
||||
// - "The acknowledgment timer shall be set to a minimum of 150 + 50 * TTL milliseconds"
|
||||
uint32_t timeout = 150 + 50 * mesh_network_ttl(network_pdu);
|
||||
mesh_lower_transport_start_acknowledgment_timer(transport_pdu, timeout,
|
||||
&mesh_lower_transport_rx_ack_timeout);
|
||||
}
|
||||
// restart incomplete timer
|
||||
mesh_lower_transport_restart_incomplete_timer(transport_pdu, 10000,
|
||||
&mesh_lower_transport_rx_incomplete_timeout);
|
||||
mesh_lower_transport_process_segment(transport_pdu, network_pdu);
|
||||
mesh_network_message_processed_by_higher_layer(network_pdu);
|
||||
} else {
|
||||
// control?
|
||||
if (mesh_network_control(network_pdu)){
|
||||
// unsegmented control message (not encrypted)
|
||||
(void) btstack_linked_list_pop(&lower_transport_incoming);
|
||||
mesh_lower_transport_process_unsegmented_control_message(network_pdu);
|
||||
} else {
|
||||
// unsegmented access message (encrypted)
|
||||
(void) btstack_linked_list_pop(&lower_transport_incoming);
|
||||
mesh_upper_transport_unsegmented_message_received(network_pdu);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (done) return;
|
||||
}
|
||||
}
|
||||
|
||||
uint32_t mesh_lower_transport_next_seq(void){
|
||||
return lower_transport_seq++;
|
||||
}
|
||||
|
||||
uint32_t mesh_lower_transport_peek_seq(void){
|
||||
return lower_transport_seq;
|
||||
}
|
||||
|
||||
void mesh_lower_transport_set_seq(uint32_t seq){
|
||||
lower_transport_seq = seq;
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_dump_network_pdus(const char *name, btstack_linked_list_t *list){
|
||||
printf("List: %s:\n", name);
|
||||
btstack_linked_list_iterator_t it;
|
||||
btstack_linked_list_iterator_init(&it, list);
|
||||
while (btstack_linked_list_iterator_has_next(&it)){
|
||||
mesh_network_pdu_t * network_pdu = (mesh_network_pdu_t*) btstack_linked_list_iterator_next(&it);
|
||||
printf("- %p: ", network_pdu); printf_hexdump(network_pdu->data, network_pdu->len);
|
||||
}
|
||||
}
|
||||
static void mesh_lower_transport_reset_network_pdus(btstack_linked_list_t *list){
|
||||
while (!btstack_linked_list_empty(list)){
|
||||
mesh_network_pdu_t * pdu = (mesh_network_pdu_t *) btstack_linked_list_pop(list);
|
||||
btstack_memory_mesh_network_pdu_free(pdu);
|
||||
}
|
||||
}
|
||||
|
||||
void mesh_lower_transport_dump(void){
|
||||
// static btstack_linked_list_t upper_transport_control;
|
||||
// static btstack_linked_list_t upper_transport_access;
|
||||
mesh_lower_transport_dump_network_pdus("lower_transport_incoming", &lower_transport_incoming);
|
||||
}
|
||||
|
||||
void mesh_lower_transport_reset(void){
|
||||
// static btstack_linked_list_t upper_transport_control;
|
||||
// static btstack_linked_list_t upper_transport_access;
|
||||
mesh_lower_transport_reset_network_pdus(&lower_transport_incoming);
|
||||
}
|
||||
|
||||
void mesh_lower_transport_init(){
|
||||
mesh_network_set_higher_layer_handler(&mesh_lower_transport_received_message);
|
||||
}
|
||||
|
||||
90
src/ble/mesh/mesh_lower_transport.h
Normal file
90
src/ble/mesh/mesh_lower_transport.h
Normal file
@ -0,0 +1,90 @@
|
||||
/*
|
||||
* Copyright (C) 2018 BlueKitchen GmbH
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the copyright holders nor the names of
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
* 4. Any redistribution, use, or modification is done solely for
|
||||
* personal benefit and not for any commercial purpose or for
|
||||
* monetary gain.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
|
||||
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
|
||||
* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
||||
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||||
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
||||
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* Please inquire about commercial licensing options at
|
||||
* contact@bluekitchen-gmbh.com
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef __MESH_LOWER_TRANSPORT_H
|
||||
#define __MESH_LOWER_TRANSPORT_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C"
|
||||
{
|
||||
#endif
|
||||
|
||||
#include <stdint.h>
|
||||
#include "ble/mesh/mesh_network.h"
|
||||
|
||||
// allocator
|
||||
mesh_transport_pdu_t * mesh_transport_pdu_get(void);
|
||||
void mesh_transport_pdu_free(mesh_transport_pdu_t * transport_pdu);
|
||||
|
||||
// transport getter/setter
|
||||
uint16_t mesh_transport_nid(mesh_transport_pdu_t * transport_pdu);
|
||||
uint16_t mesh_transport_ctl(mesh_transport_pdu_t * transport_pdu);
|
||||
uint16_t mesh_transport_ttl(mesh_transport_pdu_t * transport_pdu);
|
||||
uint32_t mesh_transport_seq(mesh_transport_pdu_t * transport_pdu);
|
||||
uint32_t mesh_transport_seq_zero(mesh_transport_pdu_t * transport_pdu);
|
||||
uint16_t mesh_transport_src(mesh_transport_pdu_t * transport_pdu);
|
||||
uint16_t mesh_transport_dst(mesh_transport_pdu_t * transport_pdu);
|
||||
|
||||
void mesh_transport_set_nid_ivi(mesh_transport_pdu_t * transport_pdu, uint8_t nid_ivi);
|
||||
void mesh_transport_set_ctl_ttl(mesh_transport_pdu_t * transport_pdu, uint8_t ctl_ttl);
|
||||
void mesh_transport_set_seq(mesh_transport_pdu_t * transport_pdu, uint32_t seq);
|
||||
void mesh_transport_set_src(mesh_transport_pdu_t * transport_pdu, uint16_t src);
|
||||
void mesh_transport_set_dest(mesh_transport_pdu_t * transport_pdu, uint16_t dest);
|
||||
|
||||
|
||||
void mesh_lower_transport_init();
|
||||
|
||||
void mesh_lower_transport_set_seq(uint32_t seq);
|
||||
uint32_t mesh_lower_transport_next_seq(void);;
|
||||
uint32_t mesh_lower_transport_peek_seq(void);
|
||||
|
||||
void mesh_lower_transport_message_processed_by_higher_layer(mesh_pdu_t * pdu);
|
||||
|
||||
void mesh_lower_transport_send_segmented_pdu(mesh_transport_pdu_t *transport_pdu);
|
||||
|
||||
// test
|
||||
void mesh_lower_transport_received_message(mesh_network_callback_type_t callback_type, mesh_network_pdu_t *network_pdu);
|
||||
void mesh_lower_transport_dump(void);
|
||||
void mesh_lower_transport_reset(void);
|
||||
|
||||
#ifdef __cplusplus
|
||||
} /* end of extern "C" */
|
||||
#endif
|
||||
|
||||
#endif
|
||||
@ -27,7 +27,7 @@ file(GLOB SOURCES_LIBUSB "../../platform/libusb/*.c")
|
||||
file(GLOB SOURCES_OFF "../../src/ble/le_device_db_memory.c" "../../src/ble/le_device_db_tlv.c")
|
||||
list(REMOVE_ITEM SOURCES_BLE ${SOURCES_OFF})
|
||||
|
||||
set(SOURCES_MESH_NEW main.c mesh_transport.c mesh_peer.c provisioner.c provisioning.c provisioning_device.c provisioning_provisioner.c)
|
||||
set(SOURCES_MESH_NEW main.c mesh_transport.c mesh_lower_transport.c mesh_peer.c provisioner.c provisioning.c provisioning_device.c provisioning_provisioner.c)
|
||||
|
||||
set(SOURCES
|
||||
${SOURCES_POSIX}
|
||||
|
||||
@ -46,13 +46,13 @@ LDFLAGS += $(shell pkg-config libusb-1.0 --libs)
|
||||
LDFLAGS += -lCppUTest -lCppUTestExt
|
||||
|
||||
|
||||
mesh: ${CORE_OBJ} ${COMMON_OBJ} ${ATT_OBJ} ${GATT_SERVER_OBJ} ${SM_OBJ} pb_adv.o pb_gatt.o mesh_proxy_service_server.o mesh_provisioning_service_server.o mesh_crypto.o provisioning_device.o mesh_network.o mesh_peer.o mesh_transport.o mesh.o
|
||||
mesh: ${CORE_OBJ} ${COMMON_OBJ} ${ATT_OBJ} ${GATT_SERVER_OBJ} ${SM_OBJ} pb_adv.o pb_gatt.o mesh_proxy_service_server.o mesh_provisioning_service_server.o mesh_crypto.o provisioning_device.o mesh_network.o mesh_peer.o mesh_lower_transport.o mesh_transport.o mesh.o
|
||||
${CC} $^ ${CFLAGS} ${LDFLAGS} -o $@
|
||||
|
||||
provisioner: ${CORE_OBJ} ${COMMON_OBJ} ${SM_OBJ} pb_adv.o mesh_crypto.o provisioning_provisioner.o provisioner.o
|
||||
${CC} $^ ${CFLAGS} ${LDFLAGS} -o $@
|
||||
|
||||
mesh_message_test: mesh_message_test.c mesh_network.o mesh_peer.o mesh_transport.o mesh_crypto.o btstack_memory.o btstack_util.o btstack_crypto.o btstack_linked_list.o hci_dump.o uECC.o mock.o rijndael.o hci_cmd.o
|
||||
mesh_message_test: mesh_message_test.c mesh_network.o mesh_peer.o mesh_lower_transport.o mesh_transport.o mesh_crypto.o btstack_memory.o btstack_util.o btstack_crypto.o btstack_linked_list.o hci_dump.o uECC.o mock.o rijndael.o hci_cmd.o
|
||||
g++ $^ ${CFLAGS} ${LDFLAGS} -o $@
|
||||
|
||||
sniffer: ${CORE_OBJ} ${COMMON_OBJ} ${SM_OBJ} sniffer.c
|
||||
@ -73,7 +73,7 @@ mesh_provisioning_device: mesh_provisioning_device.h ${CORE_OBJ} ${COMMON_OBJ} $
|
||||
mesh_proxy_server.h: mesh_proxy_server.gatt
|
||||
python ${BTSTACK_ROOT}/tool/compile_gatt.py $< $@
|
||||
|
||||
mesh_proxy_server: mesh_proxy_server.h ${CORE_OBJ} ${COMMON_OBJ} ${ATT_OBJ} ${GATT_SERVER_OBJ} ${SM_OBJ} mesh_peer.o mesh_transport.o mesh_network.o mesh_crypto.o gatt_bearer.c mesh_proxy_service_server.o mesh_proxy_server.o
|
||||
mesh_proxy_server: mesh_proxy_server.h ${CORE_OBJ} ${COMMON_OBJ} ${ATT_OBJ} ${GATT_SERVER_OBJ} ${SM_OBJ} mesh_peer.o mesh_lower_transport.o mesh_transport.o mesh_network.o mesh_crypto.o gatt_bearer.c mesh_proxy_service_server.o mesh_proxy_server.o
|
||||
${CC} $(filter-out mesh_proxy_server.h,$^) ${CFLAGS} ${LDFLAGS} -o $@
|
||||
|
||||
EXAMPLES = mesh provisioner mesh_message_test sniffer provisioning_device_test provisioning_provisioner_test mesh_provisioning_device mesh_proxy_server
|
||||
|
||||
@ -368,7 +368,7 @@ TEST(MessageTest, Message1Send){
|
||||
uint16_t dest = 0xfffd;
|
||||
uint32_t seq = 1;
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_control_message(netkey_index, ttl, src, dest, message1_upper_transport_pdu, 1, message1_lower_transport_pdus, message1_network_pdus);
|
||||
}
|
||||
|
||||
@ -391,7 +391,7 @@ TEST(MessageTest, Message2Send){
|
||||
uint16_t dest = 0x1201;
|
||||
uint32_t seq = 0x014820;
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_control_message(netkey_index, ttl, src, dest, message2_upper_transport_pdu, 1, message2_lower_transport_pdus, message2_network_pdus);
|
||||
}
|
||||
|
||||
@ -414,7 +414,7 @@ TEST(MessageTest, Message3Send){
|
||||
uint16_t dest = 0x1201;
|
||||
uint32_t seq = 0x2b3832;
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_control_message(netkey_index, ttl, src, dest, message3_upper_transport_pdu, 1, message3_lower_transport_pdus, message3_network_pdus);
|
||||
}
|
||||
|
||||
@ -439,7 +439,7 @@ TEST(MessageTest, Message4Send){
|
||||
uint32_t seq = 0x000002;
|
||||
load_network_key_nid_5e();
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_control_message(netkey_index, ttl, src, dest, message4_upper_transport_pdu, 1, message4_lower_transport_pdus, message4_network_pdus);
|
||||
}
|
||||
|
||||
@ -464,7 +464,7 @@ TEST(MessageTest, Message5Send){
|
||||
uint32_t seq = 0x014834;
|
||||
load_network_key_nid_5e();
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_control_message(netkey_index, ttl, src, dest, message5_upper_transport_pdu, 1, message5_lower_transport_pdus, message5_network_pdus);
|
||||
}
|
||||
|
||||
@ -492,7 +492,7 @@ TEST(MessageTest, Message6Send){
|
||||
uint8_t szmic = 0;
|
||||
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_access_message(netkey_index, appkey_index, ttl, src, dest, szmic, message6_upper_transport_pdu, 2, message6_lower_transport_pdus, message6_network_pdus);
|
||||
}
|
||||
|
||||
@ -512,7 +512,7 @@ TEST(MessageTest, Message7Send){
|
||||
uint32_t seq = 0x014835;
|
||||
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_control_message(netkey_index, ttl, src, dest, message7_upper_transport_pdu, 1, message7_lower_transport_pdus, message7_network_pdus);
|
||||
}
|
||||
// ACK message, handled in mesh_transport - can be checked with test_control_receive_network_pdu
|
||||
@ -559,7 +559,7 @@ TEST(MessageTest, Message10Send){
|
||||
|
||||
load_network_key_nid_5e();
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_control_message(netkey_index, ttl, src, dest, message10_upper_transport_pdu, 1, message10_lower_transport_pdus, message10_network_pdus);
|
||||
}
|
||||
|
||||
@ -588,7 +588,7 @@ TEST(MessageTest, Message12Send){
|
||||
|
||||
load_network_key_nid_5e();
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_control_message(netkey_index, ttl, src, dest, message12_upper_transport_pdu, 1, message12_lower_transport_pdus, message12_network_pdus);
|
||||
}
|
||||
|
||||
@ -618,7 +618,7 @@ TEST(MessageTest, Messagee14Send){
|
||||
|
||||
load_network_key_nid_5e();
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_control_message(netkey_index, ttl, src, dest, message14_upper_transport_pdu, 1, message14_lower_transport_pdus, message14_network_pdus);
|
||||
}
|
||||
|
||||
@ -661,7 +661,7 @@ TEST(MessageTest, Message16Send){
|
||||
uint8_t szmic = 0;
|
||||
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_access_message(netkey_index, appkey_index, ttl, src, dest, szmic, message16_upper_transport_pdu, 1, message16_lower_transport_pdus, message16_network_pdus);
|
||||
}
|
||||
|
||||
@ -689,7 +689,7 @@ TEST(MessageTest, Message18Send){
|
||||
uint8_t szmic = 0;
|
||||
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_access_message(netkey_index, appkey_index, ttl, src, dest, szmic, message18_upper_transport_pdu, 1, message18_lower_transport_pdus, message18_network_pdus);
|
||||
}
|
||||
|
||||
@ -718,7 +718,7 @@ TEST(MessageTest, Message19Send){
|
||||
uint8_t szmic = 0;
|
||||
|
||||
mesh_set_iv_index(0x12345678);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_access_message(netkey_index, appkey_index, ttl, src, dest, szmic, message19_upper_transport_pdu, 1, message19_lower_transport_pdus, message19_network_pdus);
|
||||
}
|
||||
|
||||
@ -744,7 +744,7 @@ TEST(MessageTest, Message20Send){
|
||||
uint8_t szmic = 0;
|
||||
|
||||
mesh_set_iv_index(0x12345677);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_access_message(netkey_index, appkey_index, ttl, src, dest, szmic, message20_upper_transport_pdu, 1, message20_lower_transport_pdus, message20_network_pdus);
|
||||
}
|
||||
|
||||
@ -771,7 +771,7 @@ TEST(MessageTest, Message21Send){
|
||||
uint8_t szmic = 0;
|
||||
|
||||
mesh_set_iv_index(0x12345677);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
test_send_access_message(netkey_index, appkey_index, ttl, src, dest, szmic, message21_upper_transport_pdu, 1, message21_lower_transport_pdus, message21_network_pdus);
|
||||
}
|
||||
|
||||
@ -802,7 +802,7 @@ TEST(MessageTest, Message22Send){
|
||||
uint8_t szmic = 0;
|
||||
|
||||
mesh_set_iv_index(0x12345677);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
uint8_t label_uuid[16];
|
||||
btstack_parse_hex(message22_label_string, 16, label_uuid);
|
||||
uint16_t proxy_dst = mesh_virtual_address_register(label_uuid, 0xb529);
|
||||
@ -835,7 +835,7 @@ TEST(MessageTest, Message23Send){
|
||||
uint8_t szmic = 0;
|
||||
|
||||
mesh_set_iv_index(0x12345677);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
uint8_t label_uuid[16];
|
||||
btstack_parse_hex(message23_label_string, 16, label_uuid);
|
||||
uint16_t proxy_dst = mesh_virtual_address_register(label_uuid, 0x9736);
|
||||
@ -870,7 +870,7 @@ TEST(MessageTest, Message24Send){
|
||||
uint8_t szmic = 1;
|
||||
|
||||
mesh_set_iv_index(0x12345677);
|
||||
mesh_upper_transport_set_seq(seq);
|
||||
mesh_lower_transport_set_seq(seq);
|
||||
uint8_t label_uuid[16];
|
||||
btstack_parse_hex(message24_label_string, 16, label_uuid);
|
||||
uint16_t proxy_dst = mesh_virtual_address_register(label_uuid, 0x9736);
|
||||
|
||||
@ -44,6 +44,7 @@
|
||||
#include "mesh_transport.h"
|
||||
#include "btstack_util.h"
|
||||
#include "btstack_memory.h"
|
||||
#include "ble/mesh/mesh_lower_transport.h"
|
||||
#include "mesh_peer.h"
|
||||
|
||||
static uint16_t primary_element_address;
|
||||
@ -58,644 +59,10 @@ static void mesh_print_hex(const char * name, const uint8_t * data, uint16_t len
|
||||
|
||||
// utility
|
||||
|
||||
// Transport PDU Getter
|
||||
static uint16_t mesh_transport_nid(mesh_transport_pdu_t * transport_pdu){
|
||||
return transport_pdu->network_header[0] & 0x7f;
|
||||
}
|
||||
static uint16_t mesh_transport_ctl(mesh_transport_pdu_t * transport_pdu){
|
||||
return transport_pdu->network_header[1] >> 7;
|
||||
}
|
||||
static uint16_t mesh_transport_ttl(mesh_transport_pdu_t * transport_pdu){
|
||||
return transport_pdu->network_header[1] & 0x7f;
|
||||
}
|
||||
static uint32_t mesh_transport_seq(mesh_transport_pdu_t * transport_pdu){
|
||||
return big_endian_read_24(transport_pdu->network_header, 2);
|
||||
}
|
||||
static uint32_t mesh_transport_seq_zero(mesh_transport_pdu_t * transport_pdu){
|
||||
return transport_pdu->seq_zero;
|
||||
}
|
||||
static uint16_t mesh_transport_src(mesh_transport_pdu_t * transport_pdu){
|
||||
return big_endian_read_16(transport_pdu->network_header, 5);
|
||||
}
|
||||
static uint16_t mesh_transport_dst(mesh_transport_pdu_t * transport_pdu){
|
||||
return big_endian_read_16(transport_pdu->network_header, 7);
|
||||
}
|
||||
static void mesh_transport_set_nid_ivi(mesh_transport_pdu_t * transport_pdu, uint8_t nid_ivi){
|
||||
transport_pdu->network_header[0] = nid_ivi;
|
||||
}
|
||||
static void mesh_transport_set_ctl_ttl(mesh_transport_pdu_t * transport_pdu, uint8_t ctl_ttl){
|
||||
transport_pdu->network_header[1] = ctl_ttl;
|
||||
}
|
||||
static void mesh_transport_set_seq(mesh_transport_pdu_t * transport_pdu, uint32_t seq){
|
||||
big_endian_store_24(transport_pdu->network_header, 2, seq);
|
||||
}
|
||||
static void mesh_transport_set_src(mesh_transport_pdu_t * transport_pdu, uint16_t src){
|
||||
big_endian_store_16(transport_pdu->network_header, 5, src);
|
||||
}
|
||||
static void mesh_transport_set_dest(mesh_transport_pdu_t * transport_pdu, uint16_t dest){
|
||||
big_endian_store_16(transport_pdu->network_header, 7, dest);
|
||||
}
|
||||
|
||||
// lower transport
|
||||
|
||||
// prototypes
|
||||
|
||||
static void mesh_lower_transport_run(void);
|
||||
static void mesh_lower_transport_abort_transmission(void);
|
||||
|
||||
// temp prototypes upper transport
|
||||
static void mesh_upper_unsegmented_control_message_received(mesh_network_pdu_t * network_pdu);
|
||||
static void mesh_upper_transport_segmented_message_received(mesh_transport_pdu_t *transport_pdu);
|
||||
static void mesh_upper_transport_unsegmented_message_received(mesh_network_pdu_t * network_pdu);
|
||||
|
||||
// state
|
||||
static int lower_transport_retry_count;
|
||||
|
||||
static uint32_t lower_transport_seq;
|
||||
|
||||
// lower transport incoming
|
||||
static btstack_linked_list_t lower_transport_incoming;
|
||||
|
||||
static mesh_transport_pdu_t * lower_transport_outgoing_pdu;
|
||||
static mesh_network_pdu_t * lower_transport_outgoing_segment;
|
||||
static uint16_t lower_transport_outgoing_seg_o;
|
||||
|
||||
// helper network layer, temp
|
||||
static uint8_t mesh_network_send(uint16_t netkey_index, uint8_t ctl, uint8_t ttl, uint32_t seq, uint16_t src, uint16_t dest, const uint8_t * transport_pdu_data, uint8_t transport_pdu_len){
|
||||
|
||||
// "3.4.5.2: The output filter of the interface connected to advertising or GATT bearers shall drop all messages with TTL value set to 1."
|
||||
// if (ttl <= 1) return 0;
|
||||
|
||||
// TODO: check transport_pdu_len depending on ctl
|
||||
|
||||
// lookup network by netkey_index
|
||||
const mesh_network_key_t * network_key = mesh_network_key_list_get(netkey_index);
|
||||
if (!network_key) return 0;
|
||||
|
||||
// allocate network_pdu
|
||||
mesh_network_pdu_t * network_pdu = mesh_network_pdu_get();
|
||||
if (!network_pdu) return 0;
|
||||
|
||||
// setup network_pdu
|
||||
mesh_network_setup_pdu(network_pdu, netkey_index, network_key->nid, ctl, ttl, seq, src, dest, transport_pdu_data, transport_pdu_len);
|
||||
|
||||
// send network_pdu
|
||||
mesh_network_send_pdu(network_pdu);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_process_unsegmented_control_message(mesh_network_pdu_t *network_pdu){
|
||||
uint8_t * lower_transport_pdu = mesh_network_pdu_data(network_pdu);
|
||||
uint8_t opcode = lower_transport_pdu[0];
|
||||
printf("Unsegmented Control message, outgoing message %p, opcode %x\n", lower_transport_outgoing_pdu, opcode);
|
||||
uint16_t seq_zero_pdu;
|
||||
uint16_t seq_zero_out;
|
||||
uint32_t block_ack;
|
||||
switch (opcode){
|
||||
case 0:
|
||||
if (lower_transport_outgoing_pdu == NULL) break;
|
||||
seq_zero_pdu = big_endian_read_16(lower_transport_pdu, 1) >> 2;
|
||||
seq_zero_out = mesh_transport_seq(lower_transport_outgoing_pdu) & 0x1fff;
|
||||
block_ack = big_endian_read_32(lower_transport_pdu, 3);
|
||||
printf("[+] Segment Acknowledgment message with seq_zero %06x, block_ack %08x - outgoing seq %06x, block_ack %08x\n",
|
||||
seq_zero_pdu, block_ack, seq_zero_out, lower_transport_outgoing_pdu->block_ack);
|
||||
if (block_ack == 0){
|
||||
// If a Segment Acknowledgment message with the BlockAck field set to 0x00000000 is received,
|
||||
// then the Upper Transport PDU shall be immediately cancelled and the higher layers shall be notified that
|
||||
// the Upper Transport PDU has been cancelled.
|
||||
printf("[+] Block Ack == 0 => Abort\n");
|
||||
mesh_lower_transport_abort_transmission();
|
||||
break;
|
||||
}
|
||||
if (seq_zero_pdu != seq_zero_out){
|
||||
printf("[!] Seq Zero doesn't match\n");
|
||||
break;
|
||||
}
|
||||
lower_transport_outgoing_pdu->block_ack &= ~block_ack;
|
||||
printf("[+] Updated block_ack %08x\n", lower_transport_outgoing_pdu->block_ack);
|
||||
if (lower_transport_outgoing_pdu->block_ack == 0){
|
||||
printf("[+] Sent complete\n");
|
||||
mesh_lower_transport_abort_transmission();
|
||||
}
|
||||
mesh_network_message_processed_by_higher_layer(network_pdu);
|
||||
break;
|
||||
default:
|
||||
mesh_upper_transport_unsegmented_message_received(network_pdu);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// ack / incomplete message
|
||||
|
||||
static void mesh_lower_transport_setup_segmented_acknowledge_message(uint8_t * data, uint8_t obo, uint16_t seq_zero, uint32_t block_ack){
|
||||
// printf("ACK Upper Transport, seq_zero %x\n", seq_zero);
|
||||
data[0] = 0; // SEG = 0, Opcode = 0
|
||||
big_endian_store_16( data, 1, (obo << 15) | (seq_zero << 2) | 0); // OBO, SeqZero, RFU
|
||||
big_endian_store_32( data, 3, block_ack);
|
||||
mesh_print_hex("ACK Upper Transport", data, 7);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_send_ack(uint16_t netkey_index, uint8_t ttl, uint16_t dest, uint16_t seq_zero, uint32_t block_ack){
|
||||
// setup ack message
|
||||
uint8_t ack_msg[7];
|
||||
mesh_lower_transport_setup_segmented_acknowledge_message(ack_msg, 0, seq_zero, block_ack);
|
||||
// send ack
|
||||
int i;
|
||||
for (i=0;i<1;i++){
|
||||
mesh_network_send(netkey_index, 1, ttl, mesh_lower_transport_next_seq(), primary_element_address, dest, ack_msg, sizeof(ack_msg));
|
||||
}
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_send_ack_for_transport_pdu(mesh_transport_pdu_t *transport_pdu){
|
||||
uint16_t seq_zero = mesh_transport_seq_zero(transport_pdu);
|
||||
uint8_t ttl = mesh_transport_ttl(transport_pdu);
|
||||
uint16_t dest = mesh_transport_src(transport_pdu);
|
||||
uint16_t netkey_index = transport_pdu->netkey_index;
|
||||
printf("mesh_transport_send_ack_for_transport_pdu %p with netkey_index %x, TTL = %u, SeqZero = %x, SRC = %x, DST = %x\n",
|
||||
transport_pdu, netkey_index, ttl, seq_zero, primary_element_address, dest);
|
||||
mesh_lower_transport_send_ack(netkey_index, ttl, dest, seq_zero, transport_pdu->block_ack);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_send_ack_for_network_pdu(mesh_network_pdu_t *network_pdu, uint16_t seq_zero, uint32_t block_ack) {
|
||||
uint8_t ttl = mesh_network_ttl(network_pdu);
|
||||
uint16_t dest = mesh_network_src(network_pdu);
|
||||
uint16_t netkey_index = network_pdu->netkey_index;
|
||||
printf("mesh_transport_send_ack_for_network_pdu %p with netkey_index %x, TTL = %u, SeqZero = %x, SRC = %x, DST = %x\n",
|
||||
network_pdu, netkey_index, ttl, seq_zero, primary_element_address, dest);
|
||||
mesh_lower_transport_send_ack(netkey_index, ttl, dest, seq_zero, block_ack);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_stop_acknowledgment_timer(mesh_transport_pdu_t *transport_pdu){
|
||||
if (!transport_pdu->acknowledgement_timer_active) return;
|
||||
transport_pdu->acknowledgement_timer_active = 0;
|
||||
btstack_run_loop_remove_timer(&transport_pdu->acknowledgement_timer);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_stop_incomplete_timer(mesh_transport_pdu_t *transport_pdu){
|
||||
if (!transport_pdu->incomplete_timer_active) return;
|
||||
transport_pdu->incomplete_timer_active = 0;
|
||||
btstack_run_loop_remove_timer(&transport_pdu->incomplete_timer);
|
||||
}
|
||||
|
||||
// stops timers and updates reassembly engine
|
||||
static void mesh_lower_transport_segmented_message_complete(mesh_transport_pdu_t *transport_pdu){
|
||||
// set flag
|
||||
transport_pdu->message_complete = 1;
|
||||
// stop timers
|
||||
mesh_lower_transport_stop_acknowledgment_timer(transport_pdu);
|
||||
mesh_lower_transport_stop_incomplete_timer(transport_pdu);
|
||||
// stop reassembly
|
||||
mesh_peer_t * peer = mesh_peer_for_addr(mesh_transport_src(transport_pdu));
|
||||
if (peer){
|
||||
peer->transport_pdu = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_rx_ack_timeout(btstack_timer_source_t *ts){
|
||||
mesh_transport_pdu_t * transport_pdu = (mesh_transport_pdu_t *) btstack_run_loop_get_timer_context(ts);
|
||||
printf("ACK: acknowledgement timer fired for %p, send ACK\n", transport_pdu);
|
||||
transport_pdu->acknowledgement_timer_active = 0;
|
||||
mesh_lower_transport_send_ack_for_transport_pdu(transport_pdu);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_rx_incomplete_timeout(btstack_timer_source_t *ts){
|
||||
mesh_transport_pdu_t * transport_pdu = (mesh_transport_pdu_t *) btstack_run_loop_get_timer_context(ts);
|
||||
printf("mesh_transport_rx_incomplete_timeout for %p - give up\n", transport_pdu);
|
||||
mesh_lower_transport_segmented_message_complete(transport_pdu);
|
||||
// free message
|
||||
btstack_memory_mesh_transport_pdu_free(transport_pdu);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_start_acknowledgment_timer(mesh_transport_pdu_t *transport_pdu, uint32_t timeout,
|
||||
void (*callback)(btstack_timer_source_t *ts)){
|
||||
printf("ACK: start ack timer for %p, timeout %u ms\n", transport_pdu, (int) timeout);
|
||||
btstack_run_loop_set_timer(&transport_pdu->acknowledgement_timer, timeout);
|
||||
btstack_run_loop_set_timer_handler(&transport_pdu->acknowledgement_timer, callback);
|
||||
btstack_run_loop_set_timer_context(&transport_pdu->acknowledgement_timer, transport_pdu);
|
||||
btstack_run_loop_add_timer(&transport_pdu->acknowledgement_timer);
|
||||
transport_pdu->acknowledgement_timer_active = 1;
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_restart_incomplete_timer(mesh_transport_pdu_t *transport_pdu, uint32_t timeout,
|
||||
void (*callback)(btstack_timer_source_t *ts)){
|
||||
printf("RX-(re)start incomplete timer for %p, timeout %u ms\n", transport_pdu, (int) timeout);
|
||||
if (transport_pdu->incomplete_timer_active){
|
||||
btstack_run_loop_remove_timer(&transport_pdu->incomplete_timer);
|
||||
}
|
||||
btstack_run_loop_set_timer(&transport_pdu->incomplete_timer, timeout);
|
||||
btstack_run_loop_set_timer_handler(&transport_pdu->incomplete_timer, callback);
|
||||
btstack_run_loop_set_timer_context(&transport_pdu->incomplete_timer, transport_pdu);
|
||||
btstack_run_loop_add_timer(&transport_pdu->incomplete_timer);
|
||||
transport_pdu->incomplete_timer_active = 1;
|
||||
}
|
||||
|
||||
// abort outgoing transmission
|
||||
static void mesh_lower_transport_abort_transmission(void){
|
||||
// stop ack timers
|
||||
mesh_lower_transport_stop_acknowledgment_timer(lower_transport_outgoing_pdu);
|
||||
// free pdus
|
||||
btstack_memory_mesh_transport_pdu_free(lower_transport_outgoing_pdu);
|
||||
lower_transport_outgoing_pdu = NULL;
|
||||
btstack_memory_mesh_network_pdu_free(lower_transport_outgoing_segment);
|
||||
lower_transport_outgoing_segment = NULL;
|
||||
}
|
||||
|
||||
static mesh_transport_pdu_t * mesh_lower_transport_pdu_for_segmented_message(mesh_network_pdu_t *network_pdu){
|
||||
uint16_t src = mesh_network_src(network_pdu);
|
||||
uint16_t seq_zero = ( big_endian_read_16(mesh_network_pdu_data(network_pdu), 1) >> 2) & 0x1fff;
|
||||
printf("mesh_transport_pdu_for_segmented_message: seq_zero %x\n", seq_zero);
|
||||
mesh_peer_t * peer = mesh_peer_for_addr(src);
|
||||
if (!peer) {
|
||||
return NULL;
|
||||
}
|
||||
printf("mesh_seq_zero_validate(%x, %x) -- last (%x, %x)\n", src, seq_zero, peer->address, peer->seq_zero);
|
||||
|
||||
// reception of transport message ongoing
|
||||
if (peer->transport_pdu){
|
||||
// check if segment for same seq zero
|
||||
uint16_t active_seq_zero = mesh_transport_seq_zero(peer->transport_pdu);
|
||||
if (active_seq_zero == seq_zero) {
|
||||
printf("mesh_transport_pdu_for_segmented_message: segment for current transport pdu with SeqZero %x\n", active_seq_zero);
|
||||
return peer->transport_pdu;
|
||||
} else {
|
||||
// seq zero differs from current transport pdu, but current pdu is not complete
|
||||
printf("mesh_transport_pdu_for_segmented_message: drop segment. current transport pdu SeqZero %x, now %x\n", active_seq_zero, seq_zero);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
// send ACK if segment for previously completed transport pdu (no ongoing reception, block ack is cleared)
|
||||
if ((seq_zero == peer->seq_zero) && (peer->block_ack != 0)){
|
||||
printf("mesh_transport_pdu_for_segmented_message: segment for last completed message. send ack\n");
|
||||
mesh_lower_transport_send_ack_for_network_pdu(network_pdu, seq_zero, peer->block_ack);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
// reconstruct lowest 24 bit of SeqAuth
|
||||
uint32_t seq = mesh_network_seq(network_pdu);
|
||||
uint32_t seq_auth = (seq & 0xffe000) | seq_zero;
|
||||
if (seq_auth > seq){
|
||||
seq_auth -= 0x2000;
|
||||
}
|
||||
|
||||
// no transport pdu active, check if seq zero is new
|
||||
if (seq_auth > peer->seq_auth){
|
||||
mesh_transport_pdu_t * pdu = mesh_transport_pdu_get();
|
||||
if (!pdu) return NULL;
|
||||
|
||||
// cache network pdu header
|
||||
memcpy(pdu->network_header, network_pdu->data, 9);
|
||||
// store lower 24 bit of SeqAuth for App / Device Nonce
|
||||
big_endian_store_24(pdu->network_header, 2, seq_auth);
|
||||
|
||||
// store meta data in new pdu
|
||||
pdu->netkey_index = network_pdu->netkey_index;
|
||||
pdu->block_ack = 0;
|
||||
pdu->acknowledgement_timer_active = 0;
|
||||
pdu->message_complete = 0;
|
||||
pdu->seq_zero = seq_zero;
|
||||
|
||||
// update peer info
|
||||
peer->transport_pdu = pdu;
|
||||
peer->seq_zero = seq_zero;
|
||||
peer->seq_auth = seq_auth;
|
||||
peer->block_ack = 0;
|
||||
|
||||
printf("mesh_transport_pdu_for_segmented_message: setup transport pdu %p for src %x, seq %06x, seq_zero %x\n", pdu, src, mesh_transport_seq(pdu), seq_zero);
|
||||
|
||||
return peer->transport_pdu;
|
||||
} else {
|
||||
// seq zero differs from current transport pdu
|
||||
printf("mesh_transport_pdu_for_segmented_message: drop segment for old seq %x\n", seq_zero);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_process_segment( mesh_transport_pdu_t * transport_pdu, mesh_network_pdu_t * network_pdu){
|
||||
|
||||
uint8_t * lower_transport_pdu = mesh_network_pdu_data(network_pdu);
|
||||
uint8_t lower_transport_pdu_len = mesh_network_pdu_len(network_pdu);
|
||||
|
||||
// get akf_aid & transmic
|
||||
transport_pdu->akf_aid = lower_transport_pdu[0];
|
||||
transport_pdu->transmic_len = lower_transport_pdu[1] & 0x80 ? 8 : 4;
|
||||
|
||||
// get seq_zero
|
||||
uint16_t seq_zero = ( big_endian_read_16(lower_transport_pdu, 1) >> 2) & 0x1fff;
|
||||
|
||||
// get seg fields
|
||||
uint8_t seg_o = ( big_endian_read_16(lower_transport_pdu, 2) >> 5) & 0x001f;
|
||||
uint8_t seg_n = lower_transport_pdu[3] & 0x1f;
|
||||
uint8_t segment_len = lower_transport_pdu_len - 4;
|
||||
uint8_t * segment_data = &lower_transport_pdu[4];
|
||||
|
||||
printf("mesh_lower_transport_process_segment: seq zero %04x, seg_o %02x, seg_n %02x, transmic len: %u\n", seq_zero, seg_o, seg_n, transport_pdu->transmic_len * 8);
|
||||
mesh_print_hex("Segment", segment_data, segment_len);
|
||||
|
||||
// store segment
|
||||
memcpy(&transport_pdu->data[seg_o * 12], segment_data, 12);
|
||||
// mark as received
|
||||
transport_pdu->block_ack |= (1<<seg_o);
|
||||
// last segment -> store len
|
||||
if (seg_o == seg_n){
|
||||
transport_pdu->len = (seg_n * 12) + segment_len;
|
||||
printf("Assembled payload len %u\n", transport_pdu->len);
|
||||
}
|
||||
|
||||
// check for complete
|
||||
int i;
|
||||
for (i=0;i<=seg_n;i++){
|
||||
if ( (transport_pdu->block_ack & (1<<i)) == 0) return;
|
||||
}
|
||||
|
||||
mesh_print_hex("Assembled payload", transport_pdu->data, transport_pdu->len);
|
||||
|
||||
// mark as done
|
||||
mesh_lower_transport_segmented_message_complete(transport_pdu);
|
||||
|
||||
// store block ack in peer info
|
||||
mesh_peer_t * peer = mesh_peer_for_addr(mesh_transport_src(transport_pdu));
|
||||
// TODO: check if NULL check can be removed
|
||||
if (peer){
|
||||
peer->block_ack = transport_pdu->block_ack;
|
||||
}
|
||||
|
||||
// send ack
|
||||
mesh_lower_transport_send_ack_for_transport_pdu(transport_pdu);
|
||||
|
||||
// forward to upper transport
|
||||
mesh_upper_transport_segmented_message_received(transport_pdu);
|
||||
}
|
||||
|
||||
void mesh_lower_transport_message_processed_by_higher_layer(mesh_pdu_t * pdu){
|
||||
switch (pdu->pdu_type){
|
||||
case MESH_PDU_TYPE_NETWORK:
|
||||
mesh_network_message_processed_by_higher_layer((mesh_network_pdu_t *) pdu);
|
||||
break;
|
||||
case MESH_PDU_TYPE_TRANSPORT:
|
||||
mesh_transport_pdu_free((mesh_transport_pdu_t *) pdu);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_network_pdu_sent(mesh_network_pdu_t *network_pdu);
|
||||
|
||||
static void mesh_lower_transport_tx_ack_timeout(btstack_timer_source_t * ts);
|
||||
|
||||
void mesh_lower_transport_received_message(mesh_network_callback_type_t callback_type, mesh_network_pdu_t *network_pdu){
|
||||
mesh_peer_t * peer;
|
||||
uint16_t src;
|
||||
uint16_t seq;
|
||||
switch (callback_type){
|
||||
case MESH_NETWORK_PDU_RECEIVED:
|
||||
src = mesh_network_src(network_pdu);
|
||||
seq = mesh_network_seq(network_pdu);
|
||||
peer = mesh_peer_for_addr(src);
|
||||
printf("Transport: received message. SRC %x, SEQ %x\n", src, seq);
|
||||
// validate seq
|
||||
if (peer && seq > peer->seq){
|
||||
// track seq
|
||||
peer->seq = seq;
|
||||
// add to list and go
|
||||
btstack_linked_list_add_tail(&lower_transport_incoming, (btstack_linked_item_t *) network_pdu);
|
||||
mesh_lower_transport_run();
|
||||
} else {
|
||||
// drop packet
|
||||
printf("Transport: drop packet - src/seq auth failed\n");
|
||||
mesh_network_message_processed_by_higher_layer(network_pdu);
|
||||
}
|
||||
break;
|
||||
case MESH_NETWORK_PDU_SENT:
|
||||
mesh_lower_transport_network_pdu_sent(network_pdu);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_setup_segment(mesh_transport_pdu_t *transport_pdu, uint8_t seg_o, mesh_network_pdu_t *network_pdu){
|
||||
|
||||
int ctl = mesh_transport_ctl(transport_pdu);
|
||||
uint16_t max_segment_len = ctl ? 8 : 12; // control 8 bytes (64 bit NetMic), access 12 bytes (32 bit NetMIC)
|
||||
|
||||
uint32_t seq = mesh_lower_transport_next_seq();
|
||||
uint16_t seq_zero = mesh_transport_seq(transport_pdu) & 0x01fff;
|
||||
uint8_t seg_n = (transport_pdu->len - 1) / max_segment_len;
|
||||
uint8_t szmic = ((!ctl) && (transport_pdu->transmic_len == 8)) ? 1 : 0; // only 1 for access messages with 64 bit TransMIC
|
||||
uint8_t nid = mesh_transport_nid(transport_pdu);
|
||||
uint8_t ttl = mesh_transport_ttl(transport_pdu);
|
||||
uint16_t src = mesh_transport_src(transport_pdu);
|
||||
uint16_t dest = mesh_transport_dst(transport_pdu);
|
||||
|
||||
// current segment.
|
||||
uint16_t seg_offset = seg_o * max_segment_len;
|
||||
|
||||
uint8_t lower_transport_pdu_data[16];
|
||||
lower_transport_pdu_data[0] = 0x80 | transport_pdu->akf_aid;
|
||||
big_endian_store_24(lower_transport_pdu_data, 1, (szmic << 23) | (seq_zero << 10) | (seg_o << 5) | seg_n);
|
||||
uint16_t segment_len = btstack_min(transport_pdu->len - seg_offset, max_segment_len);
|
||||
memcpy(&lower_transport_pdu_data[4], &transport_pdu->data[seg_offset], segment_len);
|
||||
uint16_t lower_transport_pdu_len = 4 + segment_len;
|
||||
|
||||
mesh_network_setup_pdu(network_pdu, transport_pdu->netkey_index, nid, 0, ttl, seq, src, dest, lower_transport_pdu_data, lower_transport_pdu_len);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_send_next_segment(void){
|
||||
if (!lower_transport_outgoing_pdu) return;
|
||||
|
||||
int ctl = mesh_transport_ctl(lower_transport_outgoing_pdu);
|
||||
uint16_t max_segment_len = ctl ? 8 : 12; // control 8 bytes (64 bit NetMic), access 12 bytes (32 bit NetMIC)
|
||||
uint8_t seg_n = (lower_transport_outgoing_pdu->len - 1) / max_segment_len;
|
||||
|
||||
// find next unacknowledged segement
|
||||
while ((lower_transport_outgoing_seg_o <= seg_n) && ((lower_transport_outgoing_pdu->block_ack & (1 << lower_transport_outgoing_seg_o)) == 0)){
|
||||
lower_transport_outgoing_seg_o++;
|
||||
}
|
||||
|
||||
if (lower_transport_outgoing_seg_o > seg_n){
|
||||
printf("[+] Upper transport, send segmented pdu complete (dst %x)\n", mesh_transport_dst(lower_transport_outgoing_pdu));
|
||||
lower_transport_outgoing_seg_o = 0;
|
||||
|
||||
// done for unicast, ack timer already set, too
|
||||
if (mesh_network_address_unicast(mesh_transport_dst(lower_transport_outgoing_pdu))) return;
|
||||
|
||||
// done, more?
|
||||
if (lower_transport_retry_count == 0){
|
||||
printf("[+] Upper transport, message unacknowledged -> free\n");
|
||||
// note: same as in seg ack handling code
|
||||
btstack_memory_mesh_transport_pdu_free(lower_transport_outgoing_pdu);
|
||||
lower_transport_outgoing_pdu = NULL;
|
||||
btstack_memory_mesh_network_pdu_free(lower_transport_outgoing_segment);
|
||||
lower_transport_outgoing_segment = NULL;
|
||||
return;
|
||||
}
|
||||
|
||||
// start retry
|
||||
printf("[+] Upper transport, message unacknowledged retry count %u\n", lower_transport_retry_count);
|
||||
lower_transport_retry_count--;
|
||||
}
|
||||
|
||||
if (mesh_network_address_unicast(mesh_transport_dst(lower_transport_outgoing_pdu))){
|
||||
// restart acknowledgment timer for unicast dst
|
||||
// - "This timer shall be set to a minimum of 200 + 50 * TTL milliseconds."
|
||||
if (lower_transport_outgoing_pdu->acknowledgement_timer_active){
|
||||
btstack_run_loop_remove_timer(&lower_transport_outgoing_pdu->incomplete_timer);
|
||||
lower_transport_outgoing_pdu->acknowledgement_timer_active = 0;
|
||||
}
|
||||
uint32_t timeout = 200 + 50 * mesh_transport_ttl(lower_transport_outgoing_pdu);
|
||||
mesh_lower_transport_start_acknowledgment_timer(lower_transport_outgoing_pdu, timeout,
|
||||
&mesh_lower_transport_tx_ack_timeout);
|
||||
}
|
||||
|
||||
mesh_lower_transport_setup_segment(lower_transport_outgoing_pdu, lower_transport_outgoing_seg_o,
|
||||
lower_transport_outgoing_segment);
|
||||
|
||||
printf("[+] Upper transport, send segmented pdu: seg_o %x, seg_n %x\n", lower_transport_outgoing_seg_o, seg_n);
|
||||
mesh_print_hex("LowerTransportPDU", lower_transport_outgoing_segment->data, lower_transport_outgoing_segment->len);
|
||||
|
||||
// next segment
|
||||
lower_transport_outgoing_seg_o++;
|
||||
|
||||
// send network pdu
|
||||
mesh_network_send_pdu(lower_transport_outgoing_segment);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_network_pdu_sent(mesh_network_pdu_t *network_pdu){
|
||||
if (lower_transport_outgoing_segment == network_pdu){
|
||||
mesh_lower_transport_send_next_segment();
|
||||
} else {
|
||||
btstack_memory_mesh_network_pdu_free(network_pdu);
|
||||
}
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_send_segmented_pdu_once(mesh_transport_pdu_t *transport_pdu){
|
||||
|
||||
if (lower_transport_retry_count == 0){
|
||||
printf("[!] Upper transport, send segmented pdu failed, retries exhausted\n");
|
||||
return;
|
||||
}
|
||||
|
||||
// chop into chunks
|
||||
printf("[+] Upper transport, send segmented pdu (retry count %u)\n", lower_transport_retry_count);
|
||||
lower_transport_retry_count--;
|
||||
|
||||
// allocate network_pdu
|
||||
mesh_network_pdu_t * network_pdu = mesh_network_pdu_get();
|
||||
if (!network_pdu) return;
|
||||
|
||||
// setup
|
||||
lower_transport_outgoing_pdu = transport_pdu;
|
||||
lower_transport_outgoing_segment = network_pdu;
|
||||
lower_transport_outgoing_seg_o = 0;
|
||||
|
||||
// setup block ack - set bit for segment to send, clear on ack
|
||||
int ctl = mesh_transport_ctl(lower_transport_outgoing_pdu);
|
||||
uint16_t max_segment_len = ctl ? 8 : 12; // control 8 bytes (64 bit NetMic), access 12 bytes (32 bit NetMIC)
|
||||
uint8_t seg_n = (lower_transport_outgoing_pdu->len - 1) / max_segment_len;
|
||||
if (seg_n == 31){
|
||||
transport_pdu->block_ack = -1;
|
||||
} else {
|
||||
transport_pdu->block_ack = (1 << (seg_n+1)) - 1;
|
||||
}
|
||||
|
||||
// start sending
|
||||
mesh_lower_transport_send_next_segment();
|
||||
}
|
||||
|
||||
void mesh_lower_transport_send_segmented_pdu(mesh_transport_pdu_t *transport_pdu){
|
||||
lower_transport_retry_count = 2;
|
||||
mesh_lower_transport_send_segmented_pdu_once(transport_pdu);
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_tx_ack_timeout(btstack_timer_source_t * ts){
|
||||
mesh_transport_pdu_t * transport_pdu = (mesh_transport_pdu_t *) btstack_run_loop_get_timer_context(ts);
|
||||
printf("[+] Lower transport, acknowledgement timer fired for %p\n", transport_pdu);
|
||||
transport_pdu->acknowledgement_timer_active = 0;
|
||||
lower_transport_outgoing_seg_o = 0;
|
||||
mesh_lower_transport_send_next_segment();
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_run(void){
|
||||
while(1){
|
||||
int done = 1;
|
||||
|
||||
if (!btstack_linked_list_empty(&lower_transport_incoming)){
|
||||
done = 0;
|
||||
// peek at next message
|
||||
mesh_network_pdu_t * network_pdu = (mesh_network_pdu_t *) btstack_linked_list_get_first_item(&lower_transport_incoming);
|
||||
// segmented?
|
||||
if (mesh_network_segmented(network_pdu)){
|
||||
mesh_transport_pdu_t * transport_pdu = mesh_lower_transport_pdu_for_segmented_message(network_pdu);
|
||||
if (!transport_pdu) return;
|
||||
(void) btstack_linked_list_pop(&lower_transport_incoming);
|
||||
// start acknowledgment timer if inactive
|
||||
if (transport_pdu->acknowledgement_timer_active == 0){
|
||||
// - "The acknowledgment timer shall be set to a minimum of 150 + 50 * TTL milliseconds"
|
||||
uint32_t timeout = 150 + 50 * mesh_network_ttl(network_pdu);
|
||||
mesh_lower_transport_start_acknowledgment_timer(transport_pdu, timeout,
|
||||
&mesh_lower_transport_rx_ack_timeout);
|
||||
}
|
||||
// restart incomplete timer
|
||||
mesh_lower_transport_restart_incomplete_timer(transport_pdu, 10000,
|
||||
&mesh_lower_transport_rx_incomplete_timeout);
|
||||
mesh_lower_transport_process_segment(transport_pdu, network_pdu);
|
||||
mesh_network_message_processed_by_higher_layer(network_pdu);
|
||||
} else {
|
||||
// control?
|
||||
if (mesh_network_control(network_pdu)){
|
||||
// unsegmented control message (not encrypted)
|
||||
(void) btstack_linked_list_pop(&lower_transport_incoming);
|
||||
mesh_lower_transport_process_unsegmented_control_message(network_pdu);
|
||||
} else {
|
||||
// unsegmented access message (encrypted)
|
||||
(void) btstack_linked_list_pop(&lower_transport_incoming);
|
||||
mesh_upper_transport_unsegmented_message_received(network_pdu);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (done) return;
|
||||
}
|
||||
}
|
||||
|
||||
uint32_t mesh_lower_transport_next_seq(void){
|
||||
return lower_transport_seq++;
|
||||
}
|
||||
|
||||
static uint32_t mesh_lower_transport_peek_seq(void){
|
||||
return lower_transport_seq;
|
||||
}
|
||||
|
||||
static void mesh_lower_transport_dump_network_pdus(const char *name, btstack_linked_list_t *list){
|
||||
printf("List: %s:\n", name);
|
||||
btstack_linked_list_iterator_t it;
|
||||
btstack_linked_list_iterator_init(&it, list);
|
||||
while (btstack_linked_list_iterator_has_next(&it)){
|
||||
mesh_network_pdu_t * network_pdu = (mesh_network_pdu_t*) btstack_linked_list_iterator_next(&it);
|
||||
printf("- %p: ", network_pdu); printf_hexdump(network_pdu->data, network_pdu->len);
|
||||
}
|
||||
}
|
||||
static void mesh_lower_transport_reset_network_pdus(btstack_linked_list_t *list){
|
||||
while (!btstack_linked_list_empty(list)){
|
||||
mesh_network_pdu_t * pdu = (mesh_network_pdu_t *) btstack_linked_list_pop(list);
|
||||
btstack_memory_mesh_network_pdu_free(pdu);
|
||||
}
|
||||
}
|
||||
|
||||
void mesh_lower_transport_dump(void){
|
||||
// static btstack_linked_list_t upper_transport_control;
|
||||
// static btstack_linked_list_t upper_transport_access;
|
||||
mesh_lower_transport_dump_network_pdus("lower_transport_incoming", &lower_transport_incoming);
|
||||
}
|
||||
|
||||
void mesh_lower_transport_reset(void){
|
||||
// static btstack_linked_list_t upper_transport_control;
|
||||
// static btstack_linked_list_t upper_transport_access;
|
||||
mesh_lower_transport_reset_network_pdus(&lower_transport_incoming);
|
||||
}
|
||||
|
||||
// application key list
|
||||
|
||||
typedef struct {
|
||||
@ -833,7 +200,7 @@ static void (*mesh_access_segmented_handler)(mesh_transport_pdu_t * transport_pd
|
||||
static btstack_linked_list_t upper_transport_incoming;
|
||||
|
||||
|
||||
static void mesh_upper_unsegmented_control_message_received(mesh_network_pdu_t * network_pdu){
|
||||
void mesh_upper_unsegmented_control_message_received(mesh_network_pdu_t * network_pdu){
|
||||
uint8_t * lower_transport_pdu = mesh_network_pdu_data(network_pdu);
|
||||
uint8_t opcode = lower_transport_pdu[0];
|
||||
if (mesh_access_unsegmented_handler){
|
||||
@ -1141,12 +508,12 @@ static void mesh_upper_transport_process_message(mesh_transport_pdu_t * transpor
|
||||
mesh_upper_transport_validate_segmented_message(transport_pdu);
|
||||
}
|
||||
|
||||
static void mesh_upper_transport_segmented_message_received(mesh_transport_pdu_t *transport_pdu){
|
||||
void mesh_upper_transport_segmented_message_received(mesh_transport_pdu_t *transport_pdu){
|
||||
btstack_linked_list_add_tail(&upper_transport_incoming, (btstack_linked_item_t*) transport_pdu);
|
||||
mesh_transport_run();
|
||||
}
|
||||
|
||||
static void mesh_upper_transport_unsegmented_message_received(mesh_network_pdu_t * network_pdu){
|
||||
void mesh_upper_transport_unsegmented_message_received(mesh_network_pdu_t * network_pdu){
|
||||
btstack_linked_list_add_tail(&upper_transport_incoming, (btstack_linked_item_t*) network_pdu);
|
||||
mesh_transport_run();
|
||||
}
|
||||
@ -1413,10 +780,6 @@ void mesh_upper_transport_set_primary_element_address(uint16_t unicast_address){
|
||||
primary_element_address = unicast_address;
|
||||
}
|
||||
|
||||
void mesh_upper_transport_set_seq(uint32_t seq){
|
||||
lower_transport_seq = seq;
|
||||
}
|
||||
|
||||
void mesh_upper_transport_register_unsegemented_message_handler(void (*callback)(mesh_network_pdu_t * network_pdu)){
|
||||
mesh_access_unsegmented_handler = callback;
|
||||
}
|
||||
@ -1425,7 +788,7 @@ void mesh_upper_transport_register_segemented_message_handler(void (*callback)(m
|
||||
}
|
||||
|
||||
void mesh_transport_init(){
|
||||
mesh_network_set_higher_layer_handler(&mesh_lower_transport_received_message);
|
||||
mesh_lower_transport_init();
|
||||
}
|
||||
|
||||
static void mesh_transport_run(void){
|
||||
|
||||
@ -51,7 +51,7 @@ extern "C"
|
||||
|
||||
void mesh_transport_init();
|
||||
|
||||
void mesh_upper_transport_set_seq(uint32_t seq);
|
||||
void mesh_lower_transport_set_seq(uint32_t seq);
|
||||
|
||||
uint32_t mesh_lower_transport_next_seq(void);
|
||||
|
||||
@ -92,6 +92,11 @@ void mesh_upper_transport_send_unsegmented_access_pdu(mesh_network_pdu_t * netwo
|
||||
|
||||
void mesh_upper_transport_send_segmented_access_pdu(mesh_transport_pdu_t * transport_pdu);
|
||||
|
||||
// temp prototypes upper transport
|
||||
void mesh_upper_unsegmented_control_message_received(mesh_network_pdu_t * network_pdu);
|
||||
void mesh_upper_transport_segmented_message_received(mesh_transport_pdu_t *transport_pdu);
|
||||
void mesh_upper_transport_unsegmented_message_received(mesh_network_pdu_t * network_pdu);
|
||||
|
||||
//
|
||||
// Virtual Address Management
|
||||
//
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user