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Backup before fixing dgram_pool initialization

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Evgeny committed 2026-02-03 17:56:31 +03:00
1 parent ed7f3d8974
commit 98c43e6fb6
19 files changed
+217 -1455
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src/etcp.c
+82 -40
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@@ -80,10 +80,10 @@ struct ETCP_CONN* etcp_connection_create(struct UTUN_INSTANCE* instance) {
etcp->recv_q = queue_new(instance->ua, INFLIGHT_INITIAL_HASH_SIZE); // Hash for send_q
etcp->ack_q = queue_new(instance->ua, 0);
etcp->inflight_pool = memory_pool_init(sizeof(struct INFLIGHT_PACKET));
etcp->rx_pool = memory_pool_init(sizeof(struct ETCP_FRAGMENT));
etcp->io_pool = memory_pool_init(sizeof(struct ETCP_FRAGMENT));
if (!etcp->input_queue || !etcp->output_queue || !etcp->input_send_q || !etcp->recv_q || !etcp->ack_q ||
!etcp->input_wait_ack || !etcp->inflight_pool || !etcp->rx_pool) {
!etcp->input_wait_ack || !etcp->inflight_pool || !etcp->io_pool) {
DEBUG_ERROR(DEBUG_CATEGORY_CONNECTION, "etcp_connection_create: error - closing - input:%p output:%p send:%p wait:%x pool:%p",
etcp->input_queue, etcp->output_queue, etcp->input_send_q, etcp->input_wait_ack, etcp->inflight_pool);
etcp_connection_close(etcp);
@@ -96,9 +96,9 @@ struct ETCP_CONN* etcp_connection_create(struct UTUN_INSTANCE* instance) {
// return NULL;
// }
etcp->mtu = 1500; // Default MTU
etcp->window_size = MAX_INFLIGHT_BYTES;
etcp->next_tx_id = 1;
etcp->mtu = 1500; // Default MTU
// etcp->window_size = MAX_INFLIGHT_BYTES; // Not used
etcp->next_tx_id = 1;
etcp->rtt_avg_10 = 10; // Initial guess (1ms)
etcp->rtt_avg_100 = 10;
etcp->rtt_history_idx = 0;
@@ -111,8 +111,8 @@ struct ETCP_CONN* etcp_connection_create(struct UTUN_INSTANCE* instance) {
etcp->link_ready_for_send_fn = etcp_link_ready_callback;
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_connection_create: connection initialized. ETCP=%p mtu=%d, window_size=%u, next_tx_id=%u",
etcp, etcp->mtu, etcp->window_size, etcp->next_tx_id);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_connection_create: connection initialized. ETCP=%p mtu=%d, next_tx_id=%u",
etcp, etcp->mtu, etcp->next_tx_id);
return etcp;
}
@@ -128,7 +128,7 @@ void etcp_connection_close(struct ETCP_CONN* etcp) {
if (pkt->ll.dgram) {
memory_pool_free(etcp->instance->data_pool, pkt->ll.dgram);
}
memory_pool_free(etcp->rx_pool, pkt);
memory_pool_free(etcp->io_pool, pkt);
}
queue_free(etcp->input_queue);
etcp->input_queue = NULL;
@@ -141,7 +141,7 @@ void etcp_connection_close(struct ETCP_CONN* etcp) {
if (pkt->ll.dgram) {
memory_pool_free(etcp->instance->data_pool, pkt->ll.dgram);
}
memory_pool_free(etcp->rx_pool, pkt);
memory_pool_free(etcp->io_pool, pkt);
}
queue_free(etcp->output_queue);
etcp->output_queue = NULL;
@@ -190,7 +190,7 @@ void etcp_connection_close(struct ETCP_CONN* etcp) {
if (pkt->ll.dgram) {
memory_pool_free(etcp->instance->data_pool, pkt->ll.dgram);
}
memory_pool_free(etcp->rx_pool, pkt);
memory_pool_free(etcp->io_pool, pkt);
}
queue_free(etcp->recv_q);
etcp->recv_q = NULL;
@@ -202,9 +202,9 @@ void etcp_connection_close(struct ETCP_CONN* etcp) {
etcp->inflight_pool = NULL;
}
if (etcp->rx_pool) {
memory_pool_destroy(etcp->rx_pool);
etcp->rx_pool = NULL;
if (etcp->io_pool) {
memory_pool_destroy(etcp->io_pool);
etcp->io_pool = NULL;
}
// Clear links list safely
@@ -272,7 +272,7 @@ int etcp_send(struct ETCP_CONN* etcp, const void* data, uint16_t len) {
// Create queue entry - this allocates ll_entry + data pointer
struct ETCP_FRAGMENT* pkt = (struct ETCP_FRAGMENT*)queue_entry_new_from_pool(etcp->rx_pool);
struct ETCP_FRAGMENT* pkt = (struct ETCP_FRAGMENT*)queue_entry_new_from_pool(etcp->io_pool);
if (!pkt) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_send: failed to allocate queue entry");
memory_pool_free(etcp->instance->data_pool, packet_data);
@@ -290,7 +290,7 @@ int etcp_send(struct ETCP_CONN* etcp, const void* data, uint16_t len) {
if (queue_data_put(etcp->input_queue, (struct ll_entry*)pkt, 0) != 0) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_send: failed to add to input queue");
memory_pool_free(etcp->instance->data_pool, packet_data);
memory_pool_free(etcp->rx_pool, pkt);
memory_pool_free(etcp->io_pool, pkt);
return -1;
}
@@ -313,6 +313,48 @@ static void input_queue_try_resume(struct ETCP_CONN* etcp) {
}
}
void etcp_stats(struct ETCP_CONN* etcp) {
if (!etcp) return;
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "ETCP stats for conn=%p:", etcp);
// Queue statistics
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " Queues:");
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " input_queue: %zu pkts, %zu bytes",
queue_entry_count(etcp->input_queue), queue_total_bytes(etcp->input_queue));
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " input_send_q: %zu pkts, %zu bytes",
queue_entry_count(etcp->input_send_q), queue_total_bytes(etcp->input_send_q));
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " input_wait_ack: %zu pkts, %zu bytes",
queue_entry_count(etcp->input_wait_ack), queue_total_bytes(etcp->input_wait_ack));
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " ack_q: %zu pkts",
queue_entry_count(etcp->ack_q));
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " recv_q: %zu pkts",
queue_entry_count(etcp->recv_q));
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " output_queue: %zu pkts, %zu bytes",
queue_entry_count(etcp->output_queue), queue_total_bytes(etcp->output_queue));
// RTT metrics
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " RTT metrics:");
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " rtt_last: %u (0.1ms)", etcp->rtt_last);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " rtt_avg_10: %u (0.1ms)", etcp->rtt_avg_10);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " rtt_avg_100: %u (0.1ms)", etcp->rtt_avg_100);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " jitter: %u (0.1ms)", etcp->jitter);
// Counters
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " Counters:");
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " bytes_sent_total: %u", etcp->bytes_sent_total);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " retransmissions_count: %u", etcp->retransmissions_count);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " ack_packets_count: %u", etcp->ack_packets_count);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " unacked_bytes: %u", etcp->unacked_bytes);
// IDs
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " IDs:");
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " next_tx_id: %u", etcp->next_tx_id);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " last_rx_id: %u", etcp->last_rx_id);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " last_delivered_id:%u", etcp->last_delivered_id);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, " rx_ack_till: %u", etcp->rx_ack_till);
}
// Input callback for input_queue (добавление новых кодограмм в стек)
// input_queue -> input_send_q
static void input_queue_cb(struct ll_queue* q, void* arg) {
@@ -326,9 +368,8 @@ static void input_queue_cb(struct ll_queue* q, void* arg) {
return;
}
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "input_queue_cb: processing ETCP_FRAGMENT %p (seq=%u, len=%u)", in_pkt, in_pkt->seq, in_pkt->ll.len);
memory_pool_free(etcp->rx_pool, in_pkt);// перемещаем из rx_pool в inflight_pool
memory_pool_free(etcp->io_pool, in_pkt);// перемещаем из io_pool в inflight_pool
// Create INFLIGHT_PACKET
struct INFLIGHT_PACKET* p = memory_pool_alloc(etcp->inflight_pool);
@@ -346,6 +387,8 @@ static void input_queue_cb(struct ll_queue* q, void* arg) {
p->last_timestamp = 0;
p->ll.dgram = in_pkt->ll.dgram;
p->ll.len = in_pkt->ll.len;
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "input_queue_cb: input -> inflight (seq=%u, len=%u)", p->seq, p->ll.len);
// Add to send queue
if (queue_data_put(etcp->input_send_q, (struct ll_entry*)p, p->seq) != 0) {
@@ -354,21 +397,20 @@ static void input_queue_cb(struct ll_queue* q, void* arg) {
DEBUG_TRACE(DEBUG_CATEGORY_ETCP, "input_queue_cb: EXIT (queue put failed)");
return;
}
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "input_queue_cb: successfully moved from input_queue to input_send_q");
input_queue_try_resume(etcp);
// Resume input_queue callback to process next packet if any
queue_resume_callback(q);
// DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "input_queue_cb: successfully moved from input_queue to input_send_q");
etcp_conn_process_send_queue(etcp);// сразу обработаем этот пакет
// input_queue_try_resume(etcp);
queue_resume_callback(etcp->input_queue);
}
static void input_send_q_cb(struct ll_queue* q, void* arg) {// etcp->input_send_q processing
struct ETCP_CONN* etcp=(struct ETCP_CONN*)arg;
size_t send_q_bytes = queue_total_bytes(etcp->input_send_q);
size_t send_q_pkts = queue_entry_count(etcp->input_send_q);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "input_send_q_cb: input_send_q status: %d pkt %d bytes", send_q_pkts, send_q_bytes);
// size_t send_q_bytes = queue_total_bytes(etcp->input_send_q);
// size_t send_q_pkts = queue_entry_count(etcp->input_send_q);
// DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "input_send_q_cb: input_send_q status: %d pkt %d bytes", send_q_pkts, send_q_bytes);
etcp_conn_process_send_queue(etcp);
}
@@ -378,16 +420,15 @@ static void ack_timeout_check(void* arg) {
uint64_t now = get_current_time_units();
uint64_t timeout = 1000;//(uint64_t)(etcp->rtt_avg_10 * RETRANS_K1) + (uint64_t)(etcp->jitter * RETRANS_K2);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "ack_timeout_check: starting check, now=%llu, timeout=%llu, rtt_avg_10=%u, jitter=%u",
(unsigned long long)now, (unsigned long long)timeout, etcp->rtt_avg_10, etcp->jitter);
// DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "ack_timeout_check: starting check, now=%llu, timeout=%llu, rtt_avg_10=%u, jitter=%u",
// (unsigned long long)now, (unsigned long long)timeout, etcp->rtt_avg_10, etcp->jitter);
struct ll_entry* current = etcp->input_wait_ack->head;
while (current) {
struct ll_entry* next = current->next; // Save next as we may remove current
struct ll_entry* current;
while (current = etcp->input_wait_ack->head) {
struct INFLIGHT_PACKET* pkt = (struct INFLIGHT_PACKET*)current;
uint64_t elapsed = now - pkt->last_timestamp;
if (elapsed > timeout) {
DEBUG_WARN(DEBUG_CATEGORY_ETCP, "ack_timeout_check: timeout for seq=%u, elapsed=%llu, timeout=%llu, send_count=%u",
DEBUG_WARN(DEBUG_CATEGORY_ETCP, "ack_timeout_check: timeout for seq=%u, elapsed=%llu, timeout=%llu, send_count=%u. Moving: wait_ack -> send_q",
pkt->seq, (unsigned long long)elapsed, (unsigned long long)timeout, pkt->send_count);
// Increment counters
@@ -397,7 +438,7 @@ static void ack_timeout_check(void* arg) {
pkt->last_link = NULL; // Reset last link for re-selection
// Remove from wait_ack
queue_remove_data(etcp->input_wait_ack, (struct ll_entry*)pkt);
queue_data_get(etcp->input_wait_ack);
// Change state and add to send_q for retransmission
pkt->state = INFLIGHT_STATE_WAIT_SEND;
@@ -410,17 +451,18 @@ static void ack_timeout_check(void* arg) {
// shedule timer
int64_t next_timeout=timeout - elapsed;
etcp->retrans_timer = uasync_set_timeout(etcp->instance->ua, next_timeout+10, etcp, ack_timeout_check);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "ack_timeout_check: rescheduled timer for %llu units", next_timeout);
break;
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "ack_timeout_check: retransmission timer set for %llu units", next_timeout);
return;
}
current = next;
}
// если всё выгребли - надо взвести resume
etcp->retrans_timer = NULL;
queue_resume_callback(etcp->input_wait_ack);
}
static void wait_ack_cb(struct ll_queue* q, void* arg) {
struct ETCP_CONN* etcp = (struct ETCP_CONN*)arg;
ack_timeout_check(etcp);
ack_timeout_check(etcp);// ack_cb срабатывает когда init (таймер не инициализирован) или когда empty (таймер не активен)
}
// Подготовить и отправить кодограмму
@@ -507,7 +549,7 @@ struct ETCP_DGRAM* etcp_request_pkt(struct ETCP_CONN* etcp) {
if (inf_pkt) {
// фрейм data (0) обязательно в конец
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_request_pkt: packet with payload (seq=%u, len=%u), ack_size=%d", inf_pkt->seq, inf_pkt->ll.len, dgram->data[1]);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_request_pkt: ready to send packet with payload (seq=%u, len=%u), ack_size=%d", inf_pkt->seq, inf_pkt->ll.len, dgram->data[1]);
dgram->data[ptr++]=0;// payload
dgram->data[ptr++]=inf_pkt->seq;
dgram->data[ptr++]=inf_pkt->seq>>8;
@@ -721,7 +763,7 @@ void etcp_conn_input(struct ETCP_DGRAM* pkt) {
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_conn_input: adding packet seq=%u to recv_q (last_delivered_id=%u)", seq, etcp->last_delivered_id);
// отправляем пакет в очередь на сборку
uint8_t* payload_data = memory_pool_alloc(etcp->instance->data_pool);
struct ETCP_FRAGMENT* rx_pkt = (struct ETCP_FRAGMENT*)queue_entry_new_from_pool(etcp->rx_pool);
struct ETCP_FRAGMENT* rx_pkt = (struct ETCP_FRAGMENT*)queue_entry_new_from_pool(etcp->io_pool);
rx_pkt->seq=seq;
rx_pkt->timestamp=pkt->timestamp;
rx_pkt->ll.dgram=payload_data;
src/etcp.c1
-751
View File
@@ -1,751 +0,0 @@
// etcp.c - ETCP Protocol Implementation (refactored and expanded based on etcp_protocol.txt)
#include "etcp.h"
#include "etcp_loadbalancer.h"
#include "../lib/u_async.h"
#include "../lib/ll_queue.h"
#include "../lib/debug_config.h"
#include "crc32.h" // For potential hashing, though not used yet.
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <math.h> // For bandwidth calcs
#include <limits.h> // For UINT16_MAX
// Enable comprehensive debug output for ETCP module
#define DEBUG_CATEGORY_ETCP_DETAILED 1
// Constants from spec (adjusted for completeness)
#define MAX_INFLIGHT_BYTES 65536 // Initial window
#define RETRANS_K1 2.0f // RTT multiplier for retrans timeout
#define RETRANS_K2 1.5f // Jitter multiplier
#define ACK_DELAY_TB 20 // ACK timer delay (2ms in 0.1ms units)
#define BURST_DELAY_FACTOR 4 // Delay before burst
#define BURST_SIZE 5 // Packets in burst (1 delayed + 4 burst)
#define RTT_HISTORY_SIZE 10 // For jitter calc
#define MAX_PENDING 32 // For ACKs/retrans (arbitrary; adjust)
#define SECTION_HEADER_SIZE 3 // type(1) + len(2)
// Container-of macro for getting struct from data pointer
//#define CONTAINER_OF(ptr, type, member) ((type *)((char *)(ptr) - offsetof(type, member)))
// Forward declarations
static void input_queue_cb(struct ll_queue* q, void* arg);
static void etcp_link_ready_callback(struct ETCP_CONN* etcp);
static void input_send_q_cb(struct ll_queue* q, void* arg);
static void wait_ack_cb(struct ll_queue* q, void* arg);
static void etcp_conn_process_send_queue(struct ETCP_CONN* etcp);
// Get current time in 0.1ms units
uint64_t get_current_time_units() {
struct timeval tv;
gettimeofday(&tv, NULL);
uint64_t time_units = ((uint64_t)tv.tv_sec * 10000ULL) + (tv.tv_usec / 100);
// DEBUG_TRACE(DEBUG_CATEGORY_ETCP, "get_current_time_units: tv_sec=%ld, tv_usec=%ld, result=%llu",
// tv.tv_sec, tv.tv_usec, (unsigned long long)time_units);
return time_units;
}
uint16_t get_current_timestamp() {
uint16_t timestamp = (uint16_t)(get_current_time_units() & 0xFFFF);
// DEBUG_TRACE(DEBUG_CATEGORY_ETCP, "get_current_timestamp: result=%u", timestamp);
return timestamp;
}
// Timestamp diff (with wrap-around)
static uint16_t timestamp_diff(uint16_t t1, uint16_t t2) {
// DEBUG_TRACE(DEBUG_CATEGORY_ETCP, "timestamp_diff: t1=%u, t2=%u", t1, t2);
if (t1 >= t2) {
return t1 - t2;
}
return (UINT16_MAX - t2) + t1 + 1;
}
// Create new ETCP connection
struct ETCP_CONN* etcp_connection_create(struct UTUN_INSTANCE* instance) {
if (!instance) return NULL;
struct ETCP_CONN* etcp = calloc(1, sizeof(struct ETCP_CONN));
if (!etcp) {
DEBUG_ERROR(DEBUG_CATEGORY_CONNECTION, "etcp_connection_create: creating connection failed for instance %p", instance);
return NULL;
}
etcp->instance = instance;
etcp->input_queue = queue_new(instance->ua, 0); // No hash for input_queue
etcp->output_queue = queue_new(instance->ua, 0); // No hash for output_queue
etcp->input_send_q = queue_new(instance->ua, INFLIGHT_INITIAL_HASH_SIZE); // Hash for send_q
etcp->input_wait_ack = queue_new(instance->ua, INFLIGHT_INITIAL_HASH_SIZE); // Hash for wait_ack
etcp->recv_q = queue_new(instance->ua, INFLIGHT_INITIAL_HASH_SIZE); // Hash for send_q
etcp->ack_q = queue_new(instance->ua, 0);
etcp->inflight_pool = memory_pool_init(sizeof(struct INFLIGHT_PACKET));
etcp->rx_pool = memory_pool_init(sizeof(struct ETCP_FRAGMENT));
if (!etcp->input_queue || !etcp->output_queue || !etcp->input_send_q || !etcp->recv_q || !etcp->ack_q ||
!etcp->input_wait_ack || !etcp->inflight_pool || !etcp->rx_pool) {
DEBUG_ERROR(DEBUG_CATEGORY_CONNECTION, "etcp_connection_create: error - closing - input:%p output:%p send:%p wait:%x pool:%p",
etcp->input_queue, etcp->output_queue, etcp->input_send_q, etcp->input_wait_ack, etcp->inflight_pool);
etcp_connection_close(etcp);
return NULL;
}
// etcp->normalizer = pn_pair_init(instance->ua, etcp->mtu);
// if (!etcp->normalizer) {
// etcp_connection_close(etcp);
// return NULL;
// }
etcp->mtu = 1500; // Default MTU
etcp->window_size = MAX_INFLIGHT_BYTES;
etcp->next_tx_id = 1;
etcp->rtt_avg_10 = 10; // Initial guess (1ms)
etcp->rtt_avg_100 = 10;
etcp->rtt_history_idx = 0;
memset(etcp->rtt_history, 0, sizeof(etcp->rtt_history));
// Set input queue callback
queue_set_callback(etcp->input_queue, input_queue_cb, etcp);
queue_set_callback(etcp->input_send_q, input_send_q_cb, etcp);
queue_set_callback(etcp->input_wait_ack, wait_ack_cb, etcp);
etcp->link_ready_for_send_fn = etcp_link_ready_callback;
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_connection_create: connection initialized. ETCP=%p mtu=%d, window_size=%u, next_tx_id=%u",
etcp, etcp->mtu, etcp->window_size, etcp->next_tx_id);
return etcp;
}
// Close connection with NULL pointer safety (prevents double free)
void etcp_connection_close(struct ETCP_CONN* etcp) {
if (!etcp) return;
// Drain and free input_queue (contains ETCP_FRAGMENT with pkt_data from data_pool)
if (etcp->input_queue) {
struct ETCP_FRAGMENT* pkt;
while ((pkt = queue_data_get(etcp->input_queue)) != NULL) {
if (pkt->ll.dgram) {
memory_pool_free(etcp->instance->data_pool, pkt->ll.dgram);
}
memory_pool_free(etcp->rx_pool, pkt);
}
queue_free(etcp->input_queue);
etcp->input_queue = NULL;
}
// Drain and free output_queue (contains ETCP_FRAGMENT with pkt_data from data_pool)
if (etcp->output_queue) {
struct ETCP_FRAGMENT* pkt;
while ((pkt = queue_data_get(etcp->output_queue)) != NULL) {
if (pkt->ll.dgram) {
memory_pool_free(etcp->instance->data_pool, pkt->ll.dgram);
}
memory_pool_free(etcp->rx_pool, pkt);
}
queue_free(etcp->output_queue);
etcp->output_queue = NULL;
}
// Drain and free input_send_q (contains INFLIGHT_PACKET with pkt_data from data_pool)
if (etcp->input_send_q) {
struct INFLIGHT_PACKET* pkt;
while ((pkt = queue_data_get(etcp->input_send_q)) != NULL) {
if (pkt->ll.dgram) {
memory_pool_free(etcp->instance->data_pool, pkt->ll.dgram);
}
memory_pool_free(etcp->inflight_pool, pkt);
}
queue_free(etcp->input_send_q);
etcp->input_send_q = NULL;
}
// Drain and free input_wait_ack (contains INFLIGHT_PACKET with pkt_data from data_pool)
if (etcp->input_wait_ack) {
struct INFLIGHT_PACKET* pkt;
while ((pkt = queue_data_get(etcp->input_wait_ack)) != NULL) {
if (pkt->ll.dgram) {
memory_pool_free(etcp->instance->data_pool, pkt->ll.dgram);
}
memory_pool_free(etcp->inflight_pool, pkt);
}
queue_free(etcp->input_wait_ack);
etcp->input_wait_ack = NULL;
}
// Drain and free ack_q (contains ACK_PACKET from ack_pool)
if (etcp->ack_q) {
struct ACK_PACKET* pkt;
while ((pkt = queue_data_get(etcp->ack_q)) != NULL) {
queue_entry_free(pkt);
}
queue_free(etcp->ack_q);
etcp->ack_q = NULL;
}
// Drain and free recv_q (contains ETCP_FRAGMENT with pkt_data from data_pool)
if (etcp->recv_q) {
struct ETCP_FRAGMENT* pkt;
while ((pkt = queue_data_get(etcp->recv_q)) != NULL) {
if (pkt->ll.dgram) {
memory_pool_free(etcp->instance->data_pool, pkt->ll.dgram);
}
memory_pool_free(etcp->rx_pool, pkt);
}
queue_free(etcp->recv_q);
etcp->recv_q = NULL;
}
// Free memory pools after all elements are returned
if (etcp->inflight_pool) {
memory_pool_destroy(etcp->inflight_pool);
etcp->inflight_pool = NULL;
}
if (etcp->rx_pool) {
memory_pool_destroy(etcp->rx_pool);
etcp->rx_pool = NULL;
}
// Clear links list safely
if (etcp->links) {
struct ETCP_LINK* link = etcp->links;
while (link) {
struct ETCP_LINK* next = link->next;
etcp_link_close(link);
link = next;
}
etcp->links = NULL;
}
// Clear next pointer to prevent dangling references
etcp->next = NULL;
// TODO: Free rx_list, etc.
free(etcp);
}
// Reset connection (stub)
void etcp_conn_reset(struct ETCP_CONN* etcp) {
// Reset IDs, queues, etc. as per protocol.txt
etcp->next_tx_id = 1;
etcp->last_rx_id = 0;
etcp->last_delivered_id = 0;
// Clear inflight, rx_list, etc.
}
// ====================================================================== Отправка данных
// Send data through ETCP connection
// Allocates memory from data_pool and places in input queue
// Returns: 0 on success, -1 on failure
int etcp_send(struct ETCP_CONN* etcp, const void* data, uint16_t len) {
// DEBUG_TRACE(DEBUG_CATEGORY_ETCP, "etcp_send: ENTER etcp=%p, data=%p, len=%zu", etcp, data, len);
if (!etcp || !data || len == 0) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_send: invalid parameters (etcp=%p, data=%p, len=%zu)", etcp, data, len);
return -1;
}
if (!etcp->input_queue) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_send: input_queue is NULL for etcp=%p", etcp);
return -1;
}
// Check length against maximum packet size
if (len > PACKET_DATA_SIZE) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_send: packet too large (len=%zu, max=%d)", len, PACKET_DATA_SIZE);
return -1;
}
// Allocate packet data from data_pool (following ETCP reception pattern)
uint8_t* packet_data = memory_pool_alloc(etcp->instance->data_pool);
if (!packet_data) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_send: failed to allocate packet data from data_pool");
return -1;
}
// Copy user data to packet buffer
memcpy(packet_data, data, len);
// Create queue entry - this allocates ll_entry + data pointer
struct ETCP_FRAGMENT* pkt = queue_data_new_from_pool(etcp->rx_pool);
if (!pkt) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_send: failed to allocate queue entry");
memory_pool_free(etcp->instance->data_pool, packet_data);
return -1;
}
pkt->seq = 0; // Will be assigned by input_queue_cb
pkt->timestamp = 0; // Will be set by input_queue_cb
pkt->ll.dgram = packet_data; // Point to data_pool allocation
pkt->ll.size = len; // размер packet_data
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_send: created PACKET %p with data %p (len=%zu)", pkt, packet_data, len);
// Add to input queue - input_queue_cb will process it
if (queue_data_put(etcp->input_queue, pkt, 0) != 0) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_send: failed to add to input queue");
memory_pool_free(etcp->instance->data_pool, packet_data);
memory_pool_free(etcp->rx_pool, pkt);
return -1;
}
return 0;
}
static void input_queue_try_resume(struct ETCP_CONN* etcp) {
DEBUG_TRACE(DEBUG_CATEGORY_ETCP, "input_queue_try_resume: ENTER etcp=%p", etcp);
// если размер input_wait_ack+input_send_q в байтах < optimal_inflight то resume сейчас.
size_t wait_ack_bytes = queue_total_bytes(etcp->input_wait_ack);
size_t send_q_bytes = queue_total_bytes(etcp->input_send_q);
size_t total_bytes = wait_ack_bytes + send_q_bytes;
if (total_bytes < etcp->optimal_inflight) {
queue_resume_callback(etcp->input_send_q);// вызвать лишний раз resume не страшно.
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "input_queue_try_resume: resumed input_send_q callback");
}
}
// Input callback for input_queue (добавление новых кодограмм в стек)
// input_queue -> input_send_q
static void input_queue_cb(struct ll_queue* q, void* arg) {
struct ETCP_CONN* etcp = (struct ETCP_CONN*)arg;
struct ETCP_FRAGMENT* in_pkt = queue_data_get(q);
if (!in_pkt) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "input_queue_cb: cannot get element (pool=%p etcp=%p)", etcp->inflight_pool, etcp);
queue_resume_callback(q);
return;
}
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "input_queue_cb: processing ETCP_FRAGMENT %p (seq=%u, len=%u)", in_pkt, in_pkt->seq, in_pkt->ll.size);
memory_pool_free(etcp->rx_pool, in_pkt);// перемещаем из rx_pool в inflight_pool
// Create INFLIGHT_PACKET
struct INFLIGHT_PACKET* p = memory_pool_alloc(etcp->inflight_pool);
if (!p) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "input_queue_cb: cannot allocate INFLIGHT_PACKET (pool=%p etcp=%p)", etcp->inflight_pool, etcp);
queue_entry_free(in_pkt); // Free the ETCP_FRAGMENT
queue_resume_callback(q);
return;
}
// Setup inflight packet (based on protocol.txt)
memset(p, 0, sizeof(*p));
p->seq = etcp->next_tx_id++; // Assign seq
p->state = INFLIGHT_STATE_WAIT_SEND;
p->last_timestamp = 0;
p->ll.dgram = in_pkt->ll.dgram;
p->ll.size = in_pkt->ll.size;
// Add to send queue
if (queue_data_put(etcp->input_send_q, p, p->seq) != 0) {
memory_pool_free(etcp->inflight_pool, p);
queue_entry_free(in_pkt);
DEBUG_TRACE(DEBUG_CATEGORY_ETCP, "input_queue_cb: EXIT (queue put failed)");
return;
}
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "input_queue_cb: successfully moved from input_queue to input_send_q");
input_queue_try_resume(etcp);
// Resume input_queue callback to process next packet if any
queue_resume_callback(q);
}
static void input_send_q_cb(struct ll_queue* q, void* arg) {// etcp->input_send_q processing
struct ETCP_CONN* etcp=(struct ETCP_CONN*)arg;
size_t send_q_bytes = queue_total_bytes(etcp->input_send_q);
size_t send_q_pkts = queue_entry_count(etcp->input_send_q);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "input_send_q_cb: input_send_q status: %d pkt %d bytes", send_q_pkts, send_q_bytes);
etcp_conn_process_send_queue(etcp);
}
static void ack_timeout_check(void* arg) {
struct ETCP_CONN* etcp = (struct ETCP_CONN*)arg;
uint64_t now = get_current_time_units();
uint64_t timeout = 1000;//(uint64_t)(etcp->rtt_avg_10 * RETRANS_K1) + (uint64_t)(etcp->jitter * RETRANS_K2);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "ack_timeout_check: starting check, now=%llu, timeout=%llu, rtt_avg_10=%u, jitter=%u",
(unsigned long long)now, (unsigned long long)timeout, etcp->rtt_avg_10, etcp->jitter);
struct ll_entry* current = etcp->input_wait_ack->head;
while (current) {
struct ll_entry* next = current->next; // Save next as we may remove current
struct INFLIGHT_PACKET* pkt = (struct INFLIGHT_PACKET*)current;
uint64_t elapsed = now - pkt->last_timestamp;
if (elapsed > timeout) {
DEBUG_WARN(DEBUG_CATEGORY_ETCP, "ack_timeout_check: timeout for seq=%u, elapsed=%llu, timeout=%llu, send_count=%u",
pkt->seq, (unsigned long long)elapsed, (unsigned long long)timeout, pkt->send_count);
// Increment counters
pkt->send_count++;
pkt->retrans_req_count++; // Optional, if used for retrans request logic
pkt->last_timestamp = now;
pkt->last_link = NULL; // Reset last link for re-selection
// Remove from wait_ack
queue_remove_data(etcp->input_wait_ack, pkt);
// Change state and add to send_q for retransmission
pkt->state = INFLIGHT_STATE_WAIT_SEND;
queue_data_put(etcp->input_send_q, pkt, pkt->seq);
// Update stats
etcp->retransmissions_count++;
}
else {// не надо до конца сканировать - они уже сортированы по таймстемпу т.к. очередь fifo, а timestamp = время добавления в очередь = время отправки
// shedule timer
int64_t next_timeout=timeout - elapsed;
etcp->retrans_timer = uasync_set_timeout(etcp->instance->ua, next_timeout+10, etcp, ack_timeout_check);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "ack_timeout_check: rescheduled timer for %llu units", next_timeout);
break;
}
current = next;
}
}
static void wait_ack_cb(struct ll_queue* q, void* arg) {
struct ETCP_CONN* etcp = (struct ETCP_CONN*)arg;
ack_timeout_check(etcp);
}
// Подготовить и отправить кодограмму
// вызывается линком когда освобождается или очередью если появляются данные на передачу
struct ETCP_DGRAM* etcp_request_pkt(struct ETCP_CONN* etcp) {
struct ETCP_LINK* link = etcp_loadbalancer_select_link(etcp);
if (!link) {
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_request_pkt: no link available");
return NULL;// если линков нет - ждём появления свободного
}
size_t send_q_size = queue_entry_count(etcp->input_send_q);
if (send_q_size == 0) {// сгребаем из input_queue
// DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_request_pkt: input_send_q empty, check if avail input_queue -> inflight");
input_queue_try_resume(etcp);
// return NULL;
}
// First, check if there's a packet in input_send_q (retrans or new)
// DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_request_pkt: getting packet from input_send_q");
struct INFLIGHT_PACKET* inf_pkt = queue_data_get(etcp->input_send_q);
if (inf_pkt) {
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_request_pkt: prepare udp dgram for send packet %p (seq=%u, len=%u)", inf_pkt, inf_pkt->seq, inf_pkt->ll.size);
inf_pkt->last_timestamp=get_current_time_units();
inf_pkt->send_count++;
inf_pkt->state=INFLIGHT_STATE_WAIT_ACK;
queue_data_put(etcp->input_wait_ack, inf_pkt, inf_pkt->seq);// move dgram to wait_ack queue
}
size_t ack_q_size = queue_entry_count(etcp->ack_q);
if (!inf_pkt && ack_q_size == 0) {
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_request_pkt: no data/ack to send");
return NULL;
}
struct ETCP_DGRAM* dgram = memory_pool_alloc(etcp->instance->pkt_pool);
if (!dgram) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_request_pkt: failed to allocate ETCP_DGRAM");
return NULL;
}
dgram->link = link;
dgram->noencrypt_len=0;
dgram->timestamp=get_current_timestamp();
// формат ack: [01] [elements count] [4 байта last_delivered_id] и <[4 байта seq][2 байта recv_ts][2 байта txrx delay ts]> x count
dgram->data[0]=1;// ack
int ptr=2;
dgram->data[ptr++]=etcp->last_delivered_id;
dgram->data[ptr++]=etcp->last_delivered_id>>8;
dgram->data[ptr++]=etcp->last_delivered_id>>16;
dgram->data[ptr++]=etcp->last_delivered_id>>24;
// тут (потом) добавим опциональные заголовки
struct ACK_PACKET* ack_pkt;
while (ack_pkt = queue_data_get(etcp->ack_q)) {
// seq 4 байта
dgram->data[ptr++]=ack_pkt->seq;
dgram->data[ptr++]=ack_pkt->seq>>8;
dgram->data[ptr++]=ack_pkt->seq>>16;
dgram->data[ptr++]=ack_pkt->seq>>24;
// ts приема 2 байта
dgram->data[ptr++]=ack_pkt->recv_timestamp;
dgram->data[ptr++]=ack_pkt->recv_timestamp>>8;
// время задержки 2 байта между recv и ack
uint16_t dly=get_current_timestamp()-ack_pkt->recv_timestamp;
dgram->data[ptr++]=dly;
dgram->data[ptr++]=dly>>8;
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_request_pkt: add ACK N%d dTS=%d", ack_pkt->seq, dly);
queue_entry_free(ack_pkt);
if (inf_pkt && inf_pkt->ll.size+ptr>=etcp->mtu-10) break;// pkt len (надо просчитать точнее включая все заголовки)
if (ptr>500) break;
}
dgram->data[1]=ptr/8;
if (inf_pkt) {
// фрейм data (0) обязательно в конец
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_request_pkt: packet with payload (seq=%u, len=%u), ack_size=%d", inf_pkt->seq, inf_pkt->ll.size, dgram->data[1]);
dgram->data[ptr++]=0;// payload
dgram->data[ptr++]=inf_pkt->seq;
dgram->data[ptr++]=inf_pkt->seq>>8;
dgram->data[ptr++]=inf_pkt->seq>>16;
dgram->data[ptr++]=inf_pkt->seq>>24;
memcpy(&dgram->data[ptr], inf_pkt->ll.dgram, inf_pkt->ll.size); ptr+=inf_pkt->ll.size;
}
else {
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_request_pkt: built packet with %d bytes total", dgram->data_len);
}
dgram->data_len=ptr;
return dgram;
}
// Callback for when a link is ready to send data
static void etcp_link_ready_callback(struct ETCP_CONN* etcp) {
if (!etcp) return;
// DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_link_ready_callback: processing send queue for etcp=%p", etcp);
etcp_conn_process_send_queue(etcp);
}
// Process packets in send queue and transmit them
static void etcp_conn_process_send_queue(struct ETCP_CONN* etcp) {
struct ETCP_DGRAM* dgram;
while(dgram = etcp_request_pkt(etcp)) {
// DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_conn_process_send_queue: sending packet");
etcp_loadbalancer_send(dgram);
}
}
static void ack_response_timer_cb(void* arg) {// проверяем неотправленные ack response и отправляем если надо.
struct ETCP_CONN* etcp = (struct ETCP_CONN*)arg;
etcp_conn_process_send_queue(etcp);// проталкиваем (она же должна отправлять только ack если больше ничего нет)
// если ack все еще заняты - обновляем таймаут
if (etcp->ack_q->count) etcp->ack_resp_timer = uasync_set_timeout(etcp->instance->ua, ACK_DELAY_TB, etcp, ack_response_timer_cb);
else etcp->ack_resp_timer=NULL;
}
// ====================================================================== Прием данных
void etcp_output_try_assembly(struct ETCP_CONN* etcp) {
// пробуем собрать выходную очередь из фрагментов
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_output_try_assembly: etcp=%p, last_delivered_id=%u, recv_q_count=%d",
etcp, etcp->last_delivered_id, queue_entry_count(etcp->recv_q));
uint32_t next_expected_id = etcp->last_delivered_id + 1;
int delivered_count = 0;
uint32_t delivered_bytes = 0;
// Look for contiguous packets starting from next_expected_id
while (1) {
struct ETCP_FRAGMENT* rx_pkt = queue_find_data_by_id(etcp->recv_q, next_expected_id);
if (!rx_pkt) {
// No more contiguous packets found
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_output_try_assembly: no packet found for id=%u, stopping", next_expected_id);
break;
}
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_output_try_assembly: assembling packet id=%u (len=%u)",
rx_pkt->seq, rx_pkt->ll.size);
// Simply move ETCP_FRAGMENT from recv_q to output_queue - no data copying needed
// Remove from recv_q first
queue_remove_data(etcp->recv_q, rx_pkt);
// Add to output_queue using the same ETCP_FRAGMENT structure
if (queue_data_put(etcp->output_queue, rx_pkt, next_expected_id) == 0) {
delivered_bytes += rx_pkt->ll.size;
delivered_count++;
DEBUG_TRACE(DEBUG_CATEGORY_ETCP, "etcp_output_try_assembly: moved packet id=%u to output_queue",
next_expected_id);
} else {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_output_try_assembly: failed to add packet id=%u to output_queue",
next_expected_id);
// Put it back in recv_q if we can't add to output_queue
queue_data_put(etcp->recv_q, rx_pkt, next_expected_id);
break;
}
// Update state for next iteration
etcp->last_delivered_id = next_expected_id;
next_expected_id++;
}
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_output_try_assembly: delivered %u contiguous packets (%u bytes), last_delivered_id=%u, output_queue_count=%d",
delivered_count, delivered_bytes, etcp->last_delivered_id, queue_entry_count(etcp->output_queue));
}
// Process ACK receipt - remove acknowledged packet from inflight queues
void etcp_ack_recv(struct ETCP_CONN* etcp, uint32_t seq, uint16_t ts, uint16_t dts) {
if (!etcp) return;
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_ack_recv: processing ACK for seq=%u, ts=%u, dts=%u", seq, ts, dts);
// Find the acknowledged packet in the wait_ack queue
struct INFLIGHT_PACKET* acked_pkt = queue_find_data_by_id(etcp->input_wait_ack, seq);
if (acked_pkt) queue_remove_data(etcp->input_wait_ack, acked_pkt);
else { acked_pkt = queue_find_data_by_id(etcp->input_send_q, seq);
queue_remove_data(etcp->input_send_q, acked_pkt);
}
if (!acked_pkt) {
// Packet might be already acknowledged or not found
DEBUG_TRACE(DEBUG_CATEGORY_ETCP, "etcp_ack_recv: packet seq=%u not found in wait_ack queue", seq);
return;
}
// Calculate RTT if timestamps are valid
if (ts != (uint16_t)-1 && dts != (uint16_t)-1) {
uint16_t rtt = timestamp_diff(ts, dts);
etcp->rtt_last = rtt;
// Update RTT averages (exponential smoothing)
if (etcp->rtt_avg_10 == 0) {
etcp->rtt_avg_10 = rtt;
etcp->rtt_avg_100 = rtt;
} else {
// RTT average over 10 packets
etcp->rtt_avg_10 = (etcp->rtt_avg_10 * 9 + rtt) / 10;
// RTT average over 100 packets
etcp->rtt_avg_100 = (etcp->rtt_avg_100 * 99 + rtt) / 100;
}
// Update jitter calculation (max - min of last 10 RTT samples)
etcp->rtt_history[etcp->rtt_history_idx] = rtt;
etcp->rtt_history_idx = (etcp->rtt_history_idx + 1) % 10;
uint16_t rtt_min = UINT16_MAX, rtt_max = 0;
for (int i = 0; i < 10; i++) {
if (etcp->rtt_history[i] < rtt_min) rtt_min = etcp->rtt_history[i];
if (etcp->rtt_history[i] > rtt_max) rtt_max = etcp->rtt_history[i];
}
etcp->jitter = rtt_max - rtt_min;
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_ack_recv: RTT updated - last=%u, avg_10=%u, avg_100=%u, jitter=%u",
rtt, etcp->rtt_avg_10, etcp->rtt_avg_100, etcp->jitter);
}
// Update connection statistics
etcp->unacked_bytes -= acked_pkt->ll.size;
etcp->bytes_sent_total += acked_pkt->ll.size;
etcp->ack_packets_count++;
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_ack_recv: removed packet seq=%u from wait_ack, unacked_bytes now %u", seq, etcp->unacked_bytes);
if (acked_pkt->ll.dgram) {
memory_pool_free(etcp->instance->data_pool, acked_pkt->ll.dgram);
}
memory_pool_free(etcp->inflight_pool, acked_pkt);
// Try to resume sending more packets if window space opened up
input_queue_try_resume(etcp);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_ack_recv: completed for seq=%u", seq);
}
// Process incoming decrypted packet
void etcp_conn_input(struct ETCP_DGRAM* pkt) {
if (!pkt || !pkt->data_len) return;
struct ETCP_CONN* etcp = pkt->link->etcp;
uint8_t* data = pkt->data;
uint16_t len = pkt->data_len;
uint16_t ts = pkt->timestamp; // Received timestamp
// Note: Assume packet starts with sections after timestamp (but timestamp is already extracted in connections?).
// Protocol.txt: timestamp is first 2B, then sections.
// But in conn_input, pkt->data is after timestamp? Assume data starts with first section.
while (len >= 1) {
uint8_t type = data[0];
// Process sections as per protocol.txt
switch (type) {
case ETCP_SECTION_ACK: {
int elm_cnt=data[1];
uint32_t till=data[2] | (data[3]<<8) | (data[4]<<16) | (data[5]<<24);
data+=6;
for (int i=0; i<elm_cnt; i++) {
uint32_t seq=data[0] | (data[1]<<8) | (data[2]<<16) | (data[3]<<24);
uint16_t ts=data[4] | (data[5]<<8);
uint16_t dts=data[6] | (data[7]<<8);
etcp_ack_recv(etcp, seq, ts, dts);
data+=8;
}
while (etcp->rx_ack_till-till<0) { etcp->rx_ack_till++; etcp_ack_recv(etcp, etcp->rx_ack_till, -1, -1); }// подтверждаем всё по till
break;
}
case ETCP_SECTION_PAYLOAD: {
if (len>=5) {
// формируем ACK
struct ACK_PACKET* p = queue_data_new_from_pool(etcp->instance->ack_pool);
uint32_t seq=data[1] | (data[2]<<8) | (data[3]<<16) | (data[4]<<24);
p->seq=seq;
p->pkt_timestamp=pkt->timestamp;
p->recv_timestamp=get_current_timestamp();
queue_data_put(etcp->ack_q, p, p->seq);
if (etcp->ack_resp_timer == NULL) {
etcp->ack_resp_timer = uasync_set_timeout(etcp->instance->ua, ACK_DELAY_TB, etcp, ack_response_timer_cb);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_conn_input: set ack_timer for delayed ACK send");
}
if ((int32_t)(etcp->last_delivered_id-seq)<0) if (queue_find_data_by_id(etcp->recv_q, seq)==NULL) {// проверяем есть ли пакет с этим seq
uint32_t pkt_len=len-5;
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_conn_input: adding packet seq=%u to recv_q (last_delivered_id=%u)", seq, etcp->last_delivered_id);
// отправляем пакет в очередь на сборку
uint8_t* payload_data = memory_pool_alloc(etcp->instance->data_pool);
struct ETCP_FRAGMENT* rx_pkt = queue_data_new_from_pool(etcp->rx_pool);
rx_pkt->seq=seq;
rx_pkt->timestamp=pkt->timestamp;
rx_pkt->ll.dgram=payload_data;
rx_pkt->ll.size=pkt_len;
// Copy the actual payload data
memcpy(payload_data, data + 5, pkt_len);
queue_data_put(etcp->recv_q, rx_pkt, seq);
DEBUG_DEBUG(DEBUG_CATEGORY_ETCP, "etcp_conn_input: packet seq=%u added to recv_q, calling assembly (last_delivered_id=%u)", seq, etcp->last_delivered_id);
if (etcp->last_delivered_id+1==seq) etcp_output_try_assembly(etcp);// пробуем собрать выходную очередь из фрагментов
}
}
len=0;
break;
}
default:
DEBUG_WARN(DEBUG_CATEGORY_ETCP, "etcp_conn_input: unknown section type=0x%02x", type);
len=0;
break;
}
}
memory_pool_free(etcp->instance->pkt_pool, pkt); // Free the incoming dgram
}
src/etcp.h
+15 -17
View File
@@ -16,8 +16,6 @@ extern "C" {
// In struct ETCP_CONN, add:
//struct pn_pair* normalizer;
//!!!!!!!!!!! надо переделать ll_queue чтобы возвращала не дата а свою структуру
// Forward declarations
struct UTUN_INSTANCE;
struct UASYNC;
@@ -81,16 +79,17 @@ struct ETCP_CONN {
uint64_t peer_node_id; // Peer node ID
// ============ Processing incoming data to be sent by ETCP
struct ll_queue* input_queue; // Incoming packets to send (storage: ETCP_FRAGMENT / rx_pool)
struct ll_queue* input_queue; // Incoming packets to send (rx_pool -> ETCP_FRAGMENT)
// Inflight очереди (2 шт) - пока пакет в статусе inflight - к нему прикрепляется struct INFLIGHT_PACKET
struct memory_pool* inflight_pool; // память для inflight очередей
struct memory_pool* rx_pool; // память для rx очередей
struct ll_queue* input_send_q; // очередь на отправку (с элементами struct INFLIGHT_PACKET)
struct ll_queue* input_wait_ack; // очередь ожидающих подтверждение (с элементами struct INFLIGHT_PACKET)
struct ll_queue* ack_q; // неотправленные подтверждения приема пакетов
struct memory_pool* io_pool; // память для rx очередей
struct ll_queue* recv_q; // очередь на сборку (с элементами struct ETCP_FRAGMENT)
struct ll_queue* input_send_q; // очередь на отправку (inflight_pool -> INFLIGHT_PACKET)
struct ll_queue* input_wait_ack; // очередь ожидающих подтверждение (inflight_pool -> struct INFLIGHT_PACKET)
struct ll_queue* ack_q; // неотправленные подтверждения приема пакетов (instance.ack_pool -> struct ACK_PACKET)
struct ll_queue* recv_q; // очередь на сборку (rx_pool -> struct ETCP_FRAGMENT)
void (*link_ready_for_send_fn)(struct ETCP_CONN*);// функцию которую должен вызвать драйвер линка при готовности линка принимать данные
@@ -105,18 +104,18 @@ struct ETCP_CONN {
uint32_t rx_ack_till;// из ack пакета - по какой пакет получено и собрано на уданенной стороне
// Metrics (RTT, jitter, etc.)
uint16_t retrans_delay;
// uint16_t retrans_delay; // Not used
uint16_t rtt_last;
uint16_t rtt_avg_10;
uint16_t rtt_avg_100;
uint16_t jitter;
uint32_t bytes_sent_total;
uint32_t bytes_received_total;
// uint32_t bytes_received_total; // Not used
uint32_t retransmissions_count;
// Window and inflight management
uint32_t unacked_bytes; // Current inflight bytes
uint32_t window_size; // Receive window
// uint32_t window_size; // Receive window - Not used
uint32_t optimal_inflight; // Sum over links
// Timers
@@ -124,19 +123,18 @@ struct ETCP_CONN {
void* ack_resp_timer; // ACK send timer
// Bandwidth measurement state
uint8_t burst_in_progress; // Burst transmission flag
uint16_t burst_start_id; // Start ID for burst
// ... (add more for meas_ts, meas_resp)
// uint8_t burst_in_progress; // Burst transmission flag - Not used
// uint16_t burst_start_id; // Start ID for burst - Not used
// Statistics counters
uint32_t ack_packets_count; // Count of ACK packets received
uint16_t last_rx_ack_id; // Last ACK ID received
// uint16_t last_rx_ack_id; // Last ACK ID received - Not used
uint16_t rtt_history[10]; // RTT history for jitter calculation (RTT_HISTORY_SIZE=10)
uint8_t rtt_history_idx; // Current index in RTT history
uint32_t total_packets_sent; // Total packets sent counter
// uint32_t total_packets_sent; // Total packets sent counter - Not used
// Flags
uint8_t wait_timeout_active; // In wait timeout state
// uint8_t wait_timeout_active; // In wait timeout state - Not used
};
// Functions
src/pkt_normalizer.c
+48 -68
View File
@@ -8,12 +8,6 @@
#include <stdio.h> // For debugging (can be removed if not needed)
#include "debug_config.h" // Assuming this for DEBUG_ERROR
// Internal helper to convert void* data to struct ll_entry*
static inline struct ll_entry* data_to_entry(void* data) {
if (!data) return NULL;
return (struct ll_entry*)data;
}
// Forward declarations
static void packer_cb(struct ll_queue* q, void* arg);
static void pn_flush_cb(void* arg);
@@ -44,8 +38,7 @@ struct PKTNORM* pn_init(struct ETCP_CONN* etcp) {
queue_set_callback(pn->input, packer_cb, pn);
queue_set_callback(etcp->output_queue, pn_unpacker_cb, pn);
pn->sndpart.dgram = NULL;
pn->sndpart.len = 0;
pn->data = NULL;
pn->recvpart = NULL;
pn->flush_timer = NULL;
@@ -58,24 +51,22 @@ void pn_pair_deinit(struct PKTNORM* pn) {
// Drain and free queues
if (pn->input) {
void* data;
while ((data = queue_data_get(pn->input)) != NULL) {
struct ll_entry* entry = data_to_entry(data);
struct ll_entry* entry;
while ((entry = queue_data_get(pn->input)) != NULL) {
if (entry->dgram) {
free(entry->dgram);
}
queue_entry_free(data);
queue_entry_free(entry);
}
queue_free(pn->input);
}
if (pn->output) {
void* data;
while ((data = queue_data_get(pn->output)) != NULL) {
struct ll_entry* entry = data_to_entry(data);
struct ll_entry* entry;
while ((entry = queue_data_get(pn->output)) != NULL) {
if (entry->dgram) {
free(entry->dgram);
}
queue_entry_free(data);
queue_entry_free(entry);
}
queue_free(pn->output);
}
@@ -84,8 +75,8 @@ void pn_pair_deinit(struct PKTNORM* pn) {
uasync_cancel_timeout(pn->ua, pn->flush_timer);
}
if (pn->sndpart.dgram) {
queue_dgram_free(&pn->sndpart);
if (pn->data) {
memory_pool_free(pn->etcp->instance->data_pool, pn->data);
}
if (pn->recvpart) {
queue_dgram_free(pn->recvpart);
@@ -136,42 +127,43 @@ static void packer_cb(struct ll_queue* q, void* arg) {
queue_wait_threshold(pn->etcp->input_queue, 0, 0, etcp_input_ready_cb, pn);
}
// Helper to send sndpart to ETCP as ETCP_FRAGMENT
// Helper to send block to ETCP as ETCP_FRAGMENT
static void pn_send_to_etcp(struct PKTNORM* pn) {
if (!pn || !pn->sndpart.dgram || pn->sndpart.len == 0) return;
if (!pn || !pn->data || pn->data_ptr == 0) return;
DEBUG_INFO(DEBUG_CATEGORY_ETCP, "pn_packer: pn_send_to_etcp");
// Allocate ETCP_FRAGMENT from rx_pool
struct ETCP_FRAGMENT* frag = (struct ETCP_FRAGMENT*)queue_entry_new_from_pool(pn->etcp->rx_pool);
// Allocate ETCP_FRAGMENT from io_pool
struct ETCP_FRAGMENT* frag = (struct ETCP_FRAGMENT*)queue_entry_new_from_pool(pn->etcp->io_pool);
if (!frag) {// drop data
pn->sndpart.len = 0;
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "pn_packer: send to etcp alloc error");
pn->alloc_errors++;
pn->data_ptr = 0;
return;
}
frag->seq = 0;
frag->timestamp = 0;
frag->ll.dgram = pn->sndpart.dgram;
frag->ll.len = pn->sndpart.len;
frag->ll.memlen = pn->sndpart.memlen;
frag->ll.dgram = pn->data;
frag->ll.len = pn->data_ptr;
frag->ll.memlen = pn->etcp->instance->data_pool->object_size;
queue_data_put(pn->etcp->input_queue, (struct ll_entry*)frag, 0);
// Сбросить структуру (dgram передан во фрагмент, не освобождаем)
pn->sndpart.dgram = NULL;
pn->sndpart.len = 0;
pn->sndpart.memlen = 0;
pn->data = NULL;
}
// Internal: Renew sndpart buffer
static void pn_buf_renew(struct PKTNORM* pn) {
if (pn->sndpart.dgram) {
int remain = pn->frag_size - pn->sndpart.len;
if (pn->data) {
int remain = pn->data_size - pn->data_ptr;
if (remain < 3) pn_send_to_etcp(pn);
}
if (!pn->sndpart.dgram) {
pn->sndpart.len=0;
pn->sndpart.dgram_pool = pn->etcp->instance->data_pool;
pn->sndpart.memlen=pn->etcp->instance->data_pool->object_size;//pn->frag_size;
pn->sndpart.dgram = memory_pool_alloc(pn->etcp->instance->data_pool);
if (!pn->data) {
pn->data = memory_pool_alloc(pn->etcp->instance->data_pool);
int size=pn->etcp->instance->data_pool->object_size;
if (size>pn->frag_size) size=pn->frag_size;
pn->data_size = size;
pn->data_ptr=0;
}
}
@@ -182,47 +174,35 @@ static void etcp_input_ready_cb(struct ll_queue* q, void* arg) {
DEBUG_INFO(DEBUG_CATEGORY_ETCP, "pn_packer: etcp_input_ready_cb");
void* data = queue_data_get(pn->input);
if (!data) {
queue_resume_callback(pn->input);
return;
}
struct ll_entry* in_dgram = queue_data_get(pn->input);
if (!in_dgram) { queue_resume_callback(pn->input); return; }
struct ll_entry* in_dgram = data_to_entry(data);
uint16_t ptr = 0;
while (ptr < in_dgram->len) {
uint16_t in_ptr = 0;//
while (in_ptr < in_dgram->len) {
pn_buf_renew(pn);
if (!pn->sndpart.dgram) break; // Allocation failed
if (!pn->data) break; // Allocation failed
int remain = pn->frag_size - pn->sndpart.len;
if (remain < 3) {
// Буфер почти полон, отправить его
pn_send_to_etcp(pn);
continue; // Продолжить с новым буфером
}
int remain = pn->data_size - pn->data_ptr;
if (remain<3) {
DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "pn_packer: fatal logic error");
pn->logic_errors++;
break;
}
if (ptr == 0) {
pn->sndpart.dgram[pn->sndpart.len++] = in_dgram->len & 0xFF;
pn->sndpart.dgram[pn->sndpart.len++] = (in_dgram->len >> 8) & 0xFF;
if (in_ptr == 0) {
pn->data[pn->data_ptr++] = in_dgram->len & 0xFF;
pn->data[pn->data_ptr++] = (in_dgram->len >> 8) & 0xFF;
remain -= 2;
}
int n = remain;
int rem = in_dgram->len - ptr;
if (n > rem) n = rem;
memcpy(pn->sndpart.dgram + pn->sndpart.len, in_dgram->dgram + ptr, n);
pn->sndpart.len += n;
ptr += n;
memcpy(pn->data + pn->data_ptr, in_dgram->dgram + in_ptr, remain);
pn->data_ptr += remain;
in_ptr += remain;
// Проверить, не заполнился ли буфер
if (pn->sndpart.len >= pn->frag_size - 2) {
pn_send_to_etcp(pn);
}
}
queue_dgram_free(in_dgram);
queue_entry_free(data);
queue_entry_free(in_dgram);
// Cancel flush timer if active
if (pn->flush_timer) {
@@ -293,8 +273,8 @@ static void pn_unpacker_cb(struct ll_queue* q, void* arg) {
}
// Free the fragment - dgram was malloc'd in pn_send_to_etcp
free(frag->ll.dgram);
memory_pool_free(pn->etcp->rx_pool, frag);
memory_pool_free(pn->etcp->instance->data_pool, frag->ll.dgram);
memory_pool_free(pn->etcp->io_pool, frag);
}
queue_resume_callback(q);
src/pkt_normalizer.c1
-197
View File
@@ -1,197 +0,0 @@
// pkt_normalizer.c - Implementation of packet normalizer for ETCP
#include "pkt_normalizer.h"
#include "etcp.h" // For ETCP_CONN and related structures
#include "ll_queue.h" // For queue operations
#include "u_async.h" // For UASYNC
#include <stdlib.h>
#include <string.h>
#include <stdio.h> // For debugging (can be removed if not needed)
// Internal helper to convert void* data to struct ll_entry*
static inline struct ll_entry* data_to_entry(void* data) {
if (!data) return NULL;
return (struct ll_entry*)data;
}
// Forward declarations
static void packer_cb(struct ll_queue* q, void* arg);
static void flush_cb(void* arg);
static void input_ready_cb(struct ll_queue* q, void* arg);
// доработать init/deinit/reset под новые структуры
// Initialization
struct PKTNORM* pn_init(struct ETCP_CONN* etcp) {
if (!etcp) return NULL;
struct PKTNORM* pn = calloc(1, sizeof(struct PKTNORM));
if (!pn) return NULL;
pn->etcp = etcp;
pn->ua = etcp->instance->ua;
pn->frag_size = etcp->mtu-100; // Use MTU as fixed packet size (adjust if headers need subtraction)
pn->tx_wait_time=10;
pn->input = queue_new(pn->ua, 0); // No hash needed
pn->output = queue_new(pn->ua, 0); // No hash needed
if (!pn->input || !pn->output || !pn->pending || !pn->send_pending) {
pn_pair_deinit(pn);
return NULL;
}
return pn;
}
// Deinitialization
void pn_pair_deinit(struct PKTNORM* pn) {
if (!pn) return;
// Drain and free queues
if (pn->input) {
void* data;
while ((data = queue_data_get(pn->input)) != NULL) {
struct ll_entry* entry = data_to_entry(data);
if (entry->dgram) {
memory_pool_free(entry->dgram_pool, entry->dgram);
}
queue_data_free(data);
}
queue_free(pn->input);
}
if (pn->output) {
void* data;
while ((data = queue_data_get(pn->output)) != NULL) {
struct ll_entry* entry = data_to_entry(data);
if (entry->dgram) {
memory_pool_free(entry->dgram_pool, entry->dgram);
}
queue_data_free(data);
}
queue_free(pn->output);
}
if (pn->flush_timer) {
uasync_cancel_timeout(pn->ua, pn->flush_timer);
}
free(pn);
}
// Reset unpacker state
void pn_unpacker_reset_state(struct PKTNORM* pn) {
if (!pn) return;
free recvpart
}
// Send data to packer (copies and adds to input queue or pending, triggering callback)
void pn_packer_send(struct PKTNORM* pn, uint8_t* data, uint16_t len) {
if (!pn || !data || len == 0) return;
struct ll_entry* entry = queue_data_new(0);
if (!entry) return;
entry->dgram = malloc(len);
if (!entry->dgram) {
queue_data_free(entry);
return;
}
memcpy(entry->dgram, data, len);
entry->len = len;
entry->dgram_pool = NULL;
queue_data_put(pn->input, entry, 0);
}
static void pn_buf_renew(struct PKTNORM* pn) {
if (!pn->sndpart) { pn->sndpart=ll_alloc_lldgram(pn); return; }
int remain=pn->sndpart->len - pn->frag_size;
if (remain<3) {
queue_data_put(pn->etcp->input_queue, pn->sndpart, 0);
pn->sndpart=ll_alloc_lldgram(pn);
}
}
// Internal: Flush callback on timeout
static void pn_flush_cb(void* arg) {
struct PKTNORM* pn = (struct PKTNORM*)arg;
if (!pn) return;
pn->flush_timer = NULL;
if (pn->sndpart && pn->sndpart->len>0) {
queue_data_put(pn->etcp->input_queue, pn->sndpart, 0);
pn->sndpart=ll_alloc_lldgram(pn);
}
}
// это основа. под нее надо подстроить остальное.
static void etcp_input_ready_cb(struct ll_queue* q, void* arg) {
struct PKTNORM* pn = (struct PKTNORM*)arg;
if (!pn) return;
// собираем и по мере отправляем
struct ll_queue* in_dgram = queue_data_get(pn->inpupt);
if (in_dgram) {
uint16_t ptr=0;//in_dgram->len;
while (ptr < in_dgram->len) {
pn_buf_renew(pn);
if (pn->sndpart) {
int remain=pn->sndpart->len-pn->frag_size;// свободного места в пакете
if (remain<3) {DEBUG_ERROR(DEBUG_CATEGORY_ETCP, "etcp_normalizer: part size error, remain=%d", remain); return;}
if (len==0) {
pn->sndpart->dgram[ptr++]=in_dgram->len;
pn->sndpart->dgram[ptr++]=in_dgram->len>>8;
remain-=2;
}
int n = remain;
int rem=in_dgram->len-ptr;// осталось скопировать
if (n > rem) n=rem;
memcpy(&pn->sndpart->dgram[pn->sndpart->len], &in_dgram->dgram[ptr], n);
pn->sndpart->len+=n;
ptr+=n;
pn_buf_renew(pn);
}
}
if (pn->flush_timer) uasync_cancel_timeout(pn->flush_timer);
if (in->input->count==0) pn->flush_timer=uasync_set_timeout(pn->ua, pn->tx_wait_time, pn, pn_flush_cb);
}
queue_resume_callback(pn->inpupt);
}
// Internal: Packer callback (aggregates small, fragments large, sends chunks)
static void packer_cb(struct ll_queue* q, void* arg) {
struct PKTNORM* pn = (struct PKTNORM*)arg;
if (!pn) return;
queue_wait_threshold(pn->etcp->input_queue, 0, 0, etcp_input_ready_cb, pn);// ждём освобождение входной очереди etcp
}
// Internal: Add assembled data to etcp->output_queue as ETCP_FRAGMENT
static void add_to_output(struct PKTNORM* pn, uint8_t* app_data, uint16_t app_len) {
struct ETCP_FRAGMENT* frag = memory_pool_alloc(pn->etcp->rx_pool);
if (!frag) return;
frag->ll.dgram = memory_pool_alloc(pn->etcp->instance->data_pool);
if (!frag->ll.dgram) {
memory_pool_free(pn->etcp->rx_pool, frag);
return;
}
memcpy(frag->ll.dgram, app_data, app_len);
frag->ll.size = app_len;
frag->ll.len = app_len;
frag->seq = 0;
frag->timestamp = 0;
queue_data_put(pn->etcp->output_queue, frag, 0);
}
// Internal: Process incoming fixed-size payload chunk from etcp
// надо доработать под новый формат
void pn_unpacker_cb(struct ll_queue* q, void* arg) {// получение из выходной очереди etcp - надо подвязать в init
struct PKTNORM* pn = (struct PKTNORM*)arg;
if (!pn) return;
// сборка: выделение нужного кол-ва памяти по заголовку, далее наполнение. когда заполнили - в очередь и наполняем следующий.
}
src/pkt_normalizer.c2
-297
View File
@@ -1,297 +0,0 @@
// pkt_normalizer.c - Implementation of packet normalizer for ETCP
#include "pkt_normalizer.h"
#include "etcp.h" // For ETCP_CONN and related structures
#include "ll_queue.h" // For queue operations
#include "u_async.h" // For UASYNC
#include <stdlib.h>
#include <string.h>
#include <stdio.h> // For debugging (can be removed if not needed)
#include "debug_config.h" // Assuming this for DEBUG_ERROR
// Internal helper to convert void* data to struct ll_entry*
static inline struct ll_entry* data_to_entry(void* data) {
if (!data) return NULL;
return (struct ll_entry*)data;
}
// Forward declarations
static void packer_cb(struct ll_queue* q, void* arg);
static void pn_flush_cb(void* arg);
static void etcp_input_ready_cb(struct ll_queue* q, void* arg);
static void pn_unpacker_cb(struct ll_queue* q, void* arg);
static void pn_send_to_etcp(struct PKTNORM* pn);
// Initialization
struct PKTNORM* pn_init(struct ETCP_CONN* etcp) {
if (!etcp) return NULL;
struct PKTNORM* pn = calloc(1, sizeof(struct PKTNORM));
if (!pn) return NULL;
pn->etcp = etcp;
pn->ua = etcp->instance->ua;
pn->frag_size = etcp->mtu - 100; // Use MTU as fixed packet size (adjust if headers need subtraction)
pn->tx_wait_time = 10;
pn->input = queue_new(pn->ua, 0); // No hash needed
pn->output = queue_new(pn->ua, 0); // No hash needed
if (!pn->input || !pn->output) {
pn_pair_deinit(pn);
return NULL;
}
queue_set_callback(pn->input, packer_cb, pn);
queue_set_callback(etcp->output_queue, pn_unpacker_cb, pn);
pn->sndpart.dgram = NULL;
pn->sndpart.len = 0;
pn->recvpart = NULL;
pn->flush_timer = NULL;
return pn;
}
// Deinitialization
void pn_pair_deinit(struct PKTNORM* pn) {
if (!pn) return;
// Drain and free queues
if (pn->input) {
void* data;
while ((data = queue_data_get(pn->input)) != NULL) {
struct ll_entry* entry = data_to_entry(data);
if (entry->dgram) {
free(entry->dgram);
}
queue_entry_free(data);
}
queue_free(pn->input);
}
if (pn->output) {
void* data;
while ((data = queue_data_get(pn->output)) != NULL) {
struct ll_entry* entry = data_to_entry(data);
if (entry->dgram) {
free(entry->dgram);
}
queue_entry_free(data);
}
queue_free(pn->output);
}
if (pn->flush_timer) {
uasync_cancel_timeout(pn->ua, pn->flush_timer);
}
if (pn->sndpart.dgram) {
queue_entry_free(&pn->sndpart);
}
if (pn->recvpart) {
queue_dgram_free(pn->recvpart);
queue_entry_free(pn->recvpart);
}
free(pn);
}
// Reset unpacker state
void pn_unpacker_reset_state(struct PKTNORM* pn) {
if (!pn) return;
if (pn->recvpart) {
queue_dgram_free(pn->recvpart);
queue_entry_free(pn->recvpart);
pn->recvpart = NULL;
}
}
// Send data to packer (copies and adds to input queue or pending, triggering callback)
void pn_packer_send(struct PKTNORM* pn, uint8_t* data, uint16_t len) {
if (!pn || !data || len == 0) return;
DEBUG_INFO(DEBUG_CATEGORY_ETCP, "pn_packer_send: pn=%p, len=%d", pn, len);
struct ll_entry* entry = ll_alloc_lldgram(len);
memcpy(entry->dgram, data, len);
entry->len = len;
entry->dgram_pool = NULL;
int ret = queue_data_put(pn->input, entry, 0);
DEBUG_INFO(DEBUG_CATEGORY_ETCP, "pn_packer_send: queue_data_put returned %d, input count=%d", ret, queue_entry_count(pn->input));
// Cancel flush timer if active
if (pn->flush_timer) {
uasync_cancel_timeout(pn->ua, pn->flush_timer);
pn->flush_timer = NULL;
}
}
// Internal: Packer callback
static void packer_cb(struct ll_queue* q, void* arg) {
struct PKTNORM* pn = (struct PKTNORM*)arg;
if (!pn) return;
queue_wait_threshold(pn->etcp->input_queue, 0, 0, etcp_input_ready_cb, pn);
}
// Helper to send sndpart to ETCP as ETCP_FRAGMENT
static void pn_send_to_etcp(struct PKTNORM* pn) {
if (!pn || !pn->sndpart.data || !pn->sndpart.len==0) return;
// Allocate ETCP_FRAGMENT from rx_pool
struct ETCP_FRAGMENT* frag = queue_entry_new_from_pool(pn->etcp->rx_pool);
if (!frag) {// drop data
pn->sndpart.len = 0;
return;
}
frag->seq = 0;
frag->timestamp = 0;
frag->ll.dgram = pn->sndpart.dgram;
frag->ll.len = pn->sndpart.len;
frag->ll.memlen = pn->sndpart.memlen;
queue_data_put(pn->etcp->input_queue, frag, 0);
queue_entry_free(&pn->sndpart);
// Сбросить структуру после освобождения
pn->sndpart.dgram = NULL;
pn->sndpart.len = 0;
pn->sndpart.memlen = 0;
}
// Internal: Renew sndpart buffer
static void pn_buf_renew(struct PKTNORM* pn) {
if (pn->sndpart.dgram) {
int remain = pn->frag_size - pn->sndpart.len;
if (remain < 3) pn_send_to_etcp(pn);
}
if (!pn->sndpart.dgram) {
pn->sndpart.len=0;
pn->sndpart.dgram_pool = pn->etcp->instance->data_pool;
pn->sndpart.memlen=pn->etcp->instance->data_pool->object_size;//pn->frag_size;
pn->sndpart.dgram = memory_pool_alloc(pn->etcp->instance->data_pool);
}
}
// Internal: Process input when etcp->input_queue is ready (empty)
static void etcp_input_ready_cb(struct ll_queue* q, void* arg) {
struct PKTNORM* pn = (struct PKTNORM*)arg;
if (!pn) return;
void* data = queue_data_get(pn->input);
if (!data) {
queue_resume_callback(pn->input);
return;
}
struct ll_entry* in_dgram = data_to_entry(data);
uint16_t ptr = 0;
while (ptr < in_dgram->len) {
pn_buf_renew(pn);
if (!pn->sndpart.dgram) break; // Allocation failed
int remain = pn->frag_size - pn->sndpart.len;
if (remain < 3) {
// Буфер почти полон, отправить его
pn_send_to_etcp(pn);
continue; // Продолжить с новым буфером
}
if (ptr == 0) {
pn->sndpart.dgram[pn->sndpart.len++] = in_dgram->len & 0xFF;
pn->sndpart.dgram[pn->sndpart.len++] = (in_dgram->len >> 8) & 0xFF;
remain -= 2;
}
int n = remain;
int rem = in_dgram->len - ptr;
if (n > rem) n = rem;
memcpy(pn->sndpart.dgram + pn->sndpart.len, in_dgram->dgram + ptr, n);
pn->sndpart.len += n;
ptr += n;
// Проверить, не заполнился ли буфер
if (pn->sndpart.len >= pn->frag_size - 2) {
pn_send_to_etcp(pn);
}
}
queue_dgram_free(in_dgram);
queue_entry_free(data);
// Cancel flush timer if active
if (pn->flush_timer) {
uasync_cancel_timeout(pn->ua, pn->flush_timer);
pn->flush_timer = NULL;
}
// Set flush timer if no more input
if (queue_entry_count(pn->input) == 0) {
pn->flush_timer = uasync_set_timeout(pn->ua, pn->tx_wait_time, pn, pn_flush_cb);
}
queue_resume_callback(pn->input);
}
// Internal: Flush callback on timeout
static void pn_flush_cb(void* arg) {
struct PKTNORM* pn = (struct PKTNORM*)arg;
if (!pn) return;
pn->flush_timer = NULL;
pn_send_to_etcp(pn);
}
// Internal: Unpacker callback (assembles fragments into original packets)
static void pn_unpacker_cb(struct ll_queue* q, void* arg) {
struct PKTNORM* pn = (struct PKTNORM*)arg;
if (!pn) return;
while (1) {
void* data = queue_data_get(pn->etcp->output_queue);
if (!data) break;
struct ETCP_FRAGMENT* frag = (struct ETCP_FRAGMENT*)data; // Since data is ll_entry*
uint8_t* payload = frag->ll.dgram;
uint16_t len = frag->ll.len;
uint16_t ptr = 0;
while (ptr < len) {
if (!pn->recvpart) {
// Need length header for new packet
if (len - ptr < 2) {
// Incomplete header, reset
pn_unpacker_reset_state(pn);
break;
}
uint16_t pkt_len = payload[ptr] | (payload[ptr + 1] << 8);
ptr += 2;
pn->recvpart = ll_alloc_lldgram(pkt_len);
if (!pn->recvpart) {
break;
}
pn->recvpart->len = 0;
}
uint16_t rem = pn->recvpart->memlen - pn->recvpart->len;
uint16_t avail = len - ptr;
uint16_t cp = (rem < avail) ? rem : avail;
memcpy(pn->recvpart->dgram + pn->recvpart->len, payload + ptr, cp);
pn->recvpart->len += cp;
ptr += cp;
if (pn->recvpart->len == pn->recvpart->memlen) {
queue_data_put(pn->output, pn->recvpart, 0);
pn->recvpart = NULL;
}
}
// Free the fragment - dgram was malloc'd in pn_send_to_etcp
free(frag->ll.dgram);
memory_pool_free(pn->etcp->rx_pool, frag);
}
queue_resume_callback(q);
}
src/pkt_normalizer.h
+8 -1
View File
@@ -19,13 +19,20 @@ struct PKTNORM {
// packer:
uint16_t frag_size; // размер фрагмента на которые разбивать
struct ll_entry sndpart; // блок ожидающий досборки
uint8_t* data; // буфер (выделяется из пула pn->etcp->instance->data_pool)
uint16_t data_ptr; // число заполненных байт
uint16_t data_size; // размер выделенной области
// struct ll_entry sndpart; // блок ожидающий досборки
void* flush_timer; // For timeout flush
struct ll_entry* pending; // Partial processed input entry
uint16_t pending_in_ptr; // Pointer in pending entry
// unpacker:
struct ll_entry* recvpart; // блок ожидающий заполнение
// stats:
uint32_t alloc_errors;
uint32_t logic_errors;
};
// Инициализация пары
src/pkt_normalizer.h1
-50
View File
@@ -1,50 +0,0 @@
// pkt_normalizer.h (упрощенная версия)
#ifndef PKT_NORMALIZER_H
#define PKT_NORMALIZER_H
#include "../lib/ll_queue.h"
#include "../lib/u_async.h"
#include <stdint.h>
// Структура для packer
struct PKTNORM {
// public:
struct ll_queue* input; // Входная очередь в packer (через нее отправляем пакеты)
struct ll_queue* output; // Выходная очередь из unpacker (через нее принимаем пакеты)
uint16_t tx_wait_time;
// private:
uasync_t* ua; // uasync instance
struct ETCP_CONN* etcp;
// packer:
uint16_t frag_size; // размер фрагмента на которые разбивать
struct ll_entry* sndpart; // блок ожидающий досборки
void* flush_timer; // For timeout flush
// unpacker:
struct ll_entry* recvpart; // блок ожидающий заполнение
};
// Инициализация пары
struct PKTNORM* pn_init(struct ETCP_CONN* etcp);// все что нужно (в т.ч. mtu и ua) берет из etcp
// Деинициализация пары
void pn_pair_deinit(struct PKTNORM* pn);
// Сброс состояния (для unpacker)
void pn_unpacker_reset_state(struct PKTNORM* pn);
// создаёт malloc data, копирует, помещает в input.
void pn_packer_send(struct PKTNORM* pn, uint8_t* data, uint16_t len);
/* Как работает:
Формат отправки в etcp: 2 байта размер, далее данные (порезанные на куски и отправленные через etcp)
собирает по возможности полные пакеты с размером frag_size.
+ timeout: неполный пакет отправляется по таймауту 1ms (если очереди пустые)
+ входящая очередь etcp не должне наполняться для минимизации задержки - новый пакет отправляем только когда очередь пустая
*/
#endif // PKT_NORMALIZER_H
src/ффф
Executable
+33
View File
@@ -0,0 +1,33 @@
Один тест не работает.
<code execution>
./test
[pass 1]
[pass 2]
[pass 3]
...
Error callback: null pointer!
[test fail]
LLM: Я нашел проблему!!!
тест не проходит потому что тест вызываает callback в котором нужно освобдить память. Но указатель null.
В аргументе передаётся только null. Тогда как получить нужный укзатель?
Память выделена в первом блоке. Надо чтобы free освобождал первый блок. Точно. Надо доработать free
/edit stdlib.h +30 -1
Компилируем и запускаем
<code execution>
<code execution>
... ./test
segmentation fault: core dumped
Да, всё чисто! теперь сообщения об ошибке нет!
Теперь пересоберем остальные тесты и запустим
Много ошибок! Только один тест проходит. Надо выяснить причину.
Вижу, мы поменяли free, теперь надо обновить все тесты. Приступаю.
.....
Тесты падают, много ошибок. Надо восстановить из бэкапа.
Восстановил. Тесты не собираются, нет makefile. лучше всё переписать заново.
там должно быть два файла. Удалю сразу все.
<code execution>
rm -r /