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ported to windows

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cozis
2023-05-16 00:21:04 +02:00
parent 43ee04a2db
commit b259bb74db
16 changed files with 317 additions and 282 deletions
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src/tcp.c
+13 -13
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@@ -1,6 +1,6 @@
#include <string.h>
#include <stdbool.h>
#include <arpa/inet.h>
#include "endian.h"
#include "tcp.h"
#ifdef TCP_DEBUG
@@ -186,13 +186,13 @@ calculate_checksum(const slice_list_t *slices, size_t num_slices)
const size_t len = slices[slice_idx].len;
for (size_t i = 0; i < len/2; i++) {
sum += ntohs(src[i]);
sum += net_to_cpu_u16(src[i]);
if (sum > 0xffff)
sum -= 0xffff;
}
}
return htons(~sum);
return cpu_to_net_u32(~sum);
}
static void
@@ -249,14 +249,14 @@ static void emit_segment(tcp_connection_t *connection, bool ack, bool syn, size_
// seq_no++;
tcp_segment_t header = {
.src_port = htons(listener->port),
.dst_port = htons(connection->peer_port),
.src_port = cpu_to_net_u32(listener->port),
.dst_port = cpu_to_net_u32(connection->peer_port),
.flags = flags,
.seq_no = htonl(seq_no),
.ack_no = htonl(ack_no),
.seq_no = cpu_to_net_u32(seq_no),
.ack_no = cpu_to_net_u32(ack_no),
.offset = 5, // No options
.unused = 0,
.window = htons(connection->rcv_wnd),
.window = cpu_to_net_u32(connection->rcv_wnd),
.checksum = 0, // Will be calculated later
.urgent_pointer = 0,
};
@@ -266,7 +266,7 @@ static void emit_segment(tcp_connection_t *connection, bool ack, bool syn, size_
.dst_addr = connection->peer_ip,
.reserved = 0,
.protocol = 6, // TCP
.tcp_length = htons(total_segment_size),
.tcp_length = cpu_to_net_u32(total_segment_size),
};
header.checksum = calculate_checksum((slice_list_t[]) {
@@ -329,8 +329,8 @@ void tcp_process_segment(tcp_state_t *state, ip_address_t sender,
if (len < sizeof(tcp_segment_t))
return;
uint16_t reordered_dst_port = ntohs(segment->dst_port);
uint16_t reordered_src_port = ntohs(segment->src_port);
uint16_t reordered_dst_port = net_to_cpu_u16(segment->dst_port);
uint16_t reordered_src_port = net_to_cpu_u16(segment->src_port);
tcp_listener_t *listener = find_listener_with_port(state, reordered_dst_port);
if (listener == NULL) {
@@ -362,7 +362,7 @@ void tcp_process_segment(tcp_state_t *state, ip_address_t sender,
// Temporary
uint32_t seq_no = choose_sequence_no();
uint32_t ack_no = ntohl(segment->seq_no)+1;
uint32_t ack_no = net_to_cpu_u32(segment->seq_no)+1;
tcp_connection_t *connection = connection_create_waiting_for_ack(listener, seq_no, ack_no, sender, reordered_src_port);
if (connection == NULL) {
@@ -389,7 +389,7 @@ void tcp_process_segment(tcp_state_t *state, ip_address_t sender,
return;
}
uint32_t ack_no = ntohl(segment->ack_no);
uint32_t ack_no = net_to_cpu_u32(segment->ack_no);
if (ack_no <= connection->snd_una)
TCP_DEBUG_LOG("Received segment acknowledged again %d", ack_no);