Align IP datagram to 4 bytes

Author: Centaurus99

Example/broadcaster.cpp

@@ -3,7 +3,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-uint8_t packet[2048];
+uint8_t packet[2048] __attribute__((aligned(4)));
 bool cont = false;
 
 // fd00::0:1 ~ fd00::3:1

Example/capture.cpp

@@ -3,7 +3,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-uint8_t packet[2048];
+uint8_t packet[2048] __attribute__((aligned(4)));
 bool cont = false;
 
 // fd00::0:1 ~ fd00::3:1

Example/shell.cpp

@@ -9,7 +9,7 @@
 #include <string.h>
 
 char *buffer;
-uint8_t packet[2048];
+uint8_t packet[2048] __attribute__((aligned(4)));
 bool cont = false;
 
 // fd00::0:1 ~ fd00::3:1

Homework/dhcpv6/main.cpp

@@ -10,8 +10,8 @@
 #include <stdlib.h>
 #include <string.h>
 
-uint8_t packet[2048];
-uint8_t output[2048];
+uint8_t packet[2048] __attribute__((aligned(4)));
+uint8_t output[2048] __attribute__((aligned(4)));
 
 // for online experiment, don't change
 #ifdef ROUTER_R1

Homework/internet-checksum/main.cpp

@@ -5,7 +5,7 @@
 #include "checksum.h"
 
 in6_addr addrs[N_IFACE_ON_BOARD] = {0};
-uint8_t packet[1024];
+uint8_t packet[1024] __attribute__((aligned(4)));
 
 int main(int argc, char *argv[]) {
   int res = HAL_Init(0, addrs);

Homework/ospf/main.cpp

@@ -19,8 +19,8 @@
 #include <string.h>
 #include <utility>
 
-uint8_t packet[2048];
-uint8_t output[2048];
+uint8_t packet[2048] __attribute__((aligned(4)));
+uint8_t output[2048] __attribute__((aligned(4)));
 
 // for online experiment, don't change
 #ifdef ROUTER_R1

Homework/protocol-ospf/main.cpp

@@ -6,8 +6,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-uint8_t buffer[2048];
-uint8_t packet[2048];
+uint8_t buffer[2048] __attribute__((aligned(4)));
+uint8_t packet[2048] __attribute__((aligned(4)));
 in6_addr addrs[N_IFACE_ON_BOARD] = {0};
 char addr_buffer[1024];
 

Homework/protocol/main.cpp

@@ -6,8 +6,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-uint8_t buffer[2048];
-uint8_t packet[2048];
+uint8_t buffer[2048] __attribute__((aligned(4)));
+uint8_t packet[2048] __attribute__((aligned(4)));
 RipngPacket ripng;
 in6_addr addrs[N_IFACE_ON_BOARD] = {0};
 char addr_buffer[1024];

Homework/router/main.cpp

@@ -9,8 +9,8 @@
 #include <stdlib.h>
 #include <string.h>
 
-uint8_t packet[2048];
-uint8_t output[2048];
+uint8_t packet[2048] __attribute__((aligned(4)));
+uint8_t output[2048] __attribute__((aligned(4)));
 
 // for online experiment, don't change
 #ifdef ROUTER_R1

Homework/tftp/client.cpp

@@ -11,8 +11,8 @@
 #include <string.h>
 #include <vector>
 
-uint8_t packet[2048];
-uint8_t output[2048];
+uint8_t packet[2048] __attribute__((aligned(4)));
+uint8_t output[2048] __attribute__((aligned(4)));
 
 // for online experiment, don't change
 #ifdef ROUTER_PC1