/****************************************************
* Function: cbInit
* Description:
***************************************************/
void delete_from()
{
PAC_NODE traverse;
traverse = head;
while(traverse!=NULL)
{
if(traverse->seq_no==from_tcpd.seq_no)
{
if(traverse->next!=NULL)
{
(traverse->next)->prev = traverse->prev;
(traverse->next)->delta_time = (traverse->next)->delta_time + traverse->delta_time;
}
if(traverse->prev!=NULL)
(traverse->prev)->next = traverse->next;
if(traverse == head)
{
if(traverse->next!=NULL)
head = traverse->next;
else
head = NULL;
timer_calibrate();
}
free(traverse);
break;
}
else traverse = traverse->next;
}
}
/* This is the C kernel entry point */
void kmain(struct multiboot *mboot_header, addr_t initial_stack)
{
/* Store passed values, and initiate some early things
* We want serial log output as early as possible */
kernel_state_flags=0;
mtboot = mboot_header;
initial_boot_stack = initial_stack;
loader_parse_kernel_elf(mboot_header, &kernel_sections);
#if CONFIG_MODULES
loader_init_kernel_symbols();
#endif
serial_init();
cpu_early_init();
#if CONFIG_MODULES
loader_init_modules();
#endif
syscall_init();
fs_initrd_load(mtboot);
cpu_timer_install(1000);
cpu_processor_init_1();
/* Now get the management stuff going */
printk(1, "[kernel]: Starting system management\n");
mm_init(mtboot);
syslog_init();
parse_kernel_command_line((char *)(addr_t)mtboot->cmdline);
tm_init_multitasking();
dm_init();
fs_init();
net_init();
trace_init();
/* Load the rest... */
printk(KERN_MILE, "[kernel]: Kernel is setup (kv=%d, bpl=%d: ok)\n",
CONFIG_VERSION_NUMBER, BITS_PER_LONG);
printk(KERN_DEBUG, "[kernel]: structure sizes: process=%d bytes, thread=%d bytes, inode=%d bytes\n",
sizeof(struct process), sizeof(struct thread), sizeof(struct inode));
cpu_interrupt_set(1);
sys_setup();
cpu_processor_init_2();
timer_calibrate();
#if CONFIG_SMP
if(boot_cpus)
cpu_boot_all_aps();
#endif
tm_clone(0, __init_entry, 0);
sys_setsid();
kt_kernel_idle_task();
}
/****************************************************
* Function: cbInit
* Description:
***************************************************/
void time_elapsed()
{
PAC_NODE traverse;
struct in_addr addr;
if (head!=NULL)
{
/*START:Send the head sequence number to TCPD, for retransmission*/
printf("Timer elapsed for %d\n",head->seq_no);
if(sendto(TIMER_in_socket, (void*)&(head->seq_no), sizeof(unsigned int), 0,
(struct sockaddr *)&TCPDM2_addr, sizeof(TCPDM2_addr))==-1)
{
perror("send problem");
}
addr.s_addr = TCPDM2_addr.sin_addr.s_addr;
printf("Sent to TCPD_M2 %d to %s port %u\n",head->seq_no,inet_ntoa(addr),ntohs(TCPDM2_addr.sin_port));
/*END:Send the head sequence number to TCPD, for retransmission*/
/*START:Delete the head node*/
total_time_elapsed.tv_sec = total_time_elapsed.tv_sec + head->delta_time/1000;
total_time_elapsed.tv_usec = total_time_elapsed.tv_usec + (head->delta_time%1000)*1000;
traverse = head;
if(head->next==NULL)
head=NULL;
else
{
(head->next)->prev = NULL;
head = head->next;
}
free(traverse);
print_list();
/*END:Delete the head node*/
/*START: Call the timer generator*/
if(head!=NULL){
timer_calibrate();
}
/*END: Call the timer generator*/
}
}
/****************************************************
* Function: cbInit
* Description:
***************************************************/
void insert_into()
{
PAC_NODE node;
PAC_NODE traverse;
node = (PAC_NODE)malloc(sizeof(struct packet_node));
/*START: Get absolute time of day and subtract AERT to get delta time*/
if(head==NULL)
{
gettimeofday(&total_time_elapsed ,NULL);
printf("HEad is null, getting time of day\n");
}
node->delta_time = (from_tcpd.AERT.tv_sec - total_time_elapsed.tv_sec)*1000 +
(from_tcpd.AERT.tv_usec - total_time_elapsed.tv_usec)/1000;
printf("Received sec:%u usec:%u, Current seec:%u usec:%u delta time: %u\n",
from_tcpd.AERT.tv_sec,from_tcpd.AERT.tv_usec, total_time_elapsed.tv_sec,
total_time_elapsed.tv_usec, node->delta_time);
/*END: Get absolute time of day and subtract AERT to get delta time*/
node->seq_no = from_tcpd.seq_no;
node->next = NULL;
node->prev = NULL;
/*START:If there are no elements in the list add node as head*/
if(head==NULL)
{
head = node;
//gettimeofday(&curr_time,NULL);
timer_calibrate();
return;
}
/*END:If there are no elements in the list add node as head*/
/*START:look for node's place and place it there*/
traverse = head;
while(1)
{
if(node->delta_time<traverse->delta_time)
{
if(traverse->prev!=NULL)
(traverse->prev)->next = node;
node->prev = traverse->prev;
node->next = traverse;
traverse->prev = node;
traverse->delta_time = traverse->delta_time - node->delta_time;
if (traverse==head)
{
head = node;
timer_calibrate();
}
break;
}
else if(traverse->next==NULL)
{
node->delta_time = node->delta_time - traverse->delta_time;
traverse->next = node;
node->prev = traverse;
break;
}
else
{
node->delta_time = node->delta_time - traverse->delta_time;
traverse = traverse->next;
}
}
/*END:look for node's place and place it there*/
return;
}
