ANS_TCP_STACK.md

ANS TCP STACK

echo 0 | sudo tee /proc/sys/kernel/randomize_va_space

cd $DPDK modprobe uio insmod x86_64-native-linuxapp-gcc/kmod/igb_uio.ko

./usertools/dpdk-devbind.py --bind=igb_uio 00:08.0 ./usertools/dpdk-devbind.py --bind=igb_uio 00:09.0 ./usertools/dpdk-devbind.py -s

Network devices using DPDK-compatible driver

0000:00:08.0 '82540EM Gigabit Ethernet Controller 100e' drv=igb_uio unused=vfio-pci,uio_pci_generic 0000:00:09.0 '82540EM Gigabit Ethernet Controller 100e' drv=igb_uio unused=vfio-pci,uio_pci_generic

#./usertools/dpdk-setup.sh 512 non-numa HUGEPAGES

cd $ANS

./build/ans -c 0x2 -n 1 --base-virtaddr=0x2aaa2aa0000 -- -p 0x1 --config="(0,0,1)"

http_client.c

/*
Quick and dirty blocking http1.0 client
can be built with the same script as http_server
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <sched.h>
#include <unistd.h>
#include <sys/times.h>

#include <stdint.h>
#include <string.h>
#include <stdarg.h>
#include <errno.h>
#include <netinet/in.h>
#include <termios.h>
#include <sys/epoll.h>

#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>

 #include <netdb.h>
#ifndef __linux__
#ifdef __FreeBSD__
#include <sys/socket.h>
#else
#include <net/socket.h>
#endif
#endif

#include <sys/time.h>
#include "anssock_intf.h"
#include "ans_errno.h"


#define BUFFER_SIZE 5000
#define BUFSIZE 5000
#define MAX_EVENTS 512
#define MAX_CPUS 8

#define read anssock_read
#define write anssock_write
#define socket anssock_socket
#define connect anssock_connect
#define epoll_create anssock_epoll_create
#define epoll_ctl anssock_epoll_ctl
#define error(x) printf(x)

char *http_req = "GET / HTTP/1.0\r\n"
                 "Connection: close\r\n"
                 "User-Agent: test-tcp-stack\r\n"
                 "Accept: */*\r\n"
                 "\r\n";

int waitfd(int sockfd) {
	int epoll_fd;
        int nfds;
	epoll_fd = epoll_create(MAX_EVENTS);
	if (epoll_fd == -1)
	{
		printf("epoll_create failed \n");
		return 1;
	}

	struct epoll_event ev;
	struct epoll_event events[MAX_EVENTS];
	ev.events = EPOLLIN | EPOLLET;
	ev.data.fd = sockfd;

	if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, sockfd, &ev) == -1)
	{
		printf("epll_ctl:server_sockfd register failed");
		close(sockfd);
		close(epoll_fd);
		return 1;
	}

	nfds = anssock_epoll_wait(epoll_fd, events, MAX_EVENTS, -1);
	if (nfds == -1)  {
		printf("start epoll_wait failed");
		close(sockfd);
		close(epoll_fd);
		return 1;
	}
}

int main(int argc, char *argv[])
{
    int sockfd, portno, n;
    struct sockaddr_in serveraddr;
    struct hostent *server;
    char *hostname;
    char buf[BUFSIZE];

	int ret;
	ret = anssock_init(NULL);
	if (ret != 0)
		printf("init sock failed \n");
	int core =0;
  	/*initialize thread bind cpu*/
	cpu_set_t cpus;

	CPU_ZERO(&cpus);
	CPU_SET((unsigned)core, &cpus);
	sched_setaffinity(0, sizeof(cpus), &cpus);  

    /* check command line arguments */
    if (argc != 3) {
       fprintf(stderr,"usage: %s <hostname> <port>\n", argv[0]);
       exit(0);
    }
    hostname = argv[1];
    portno = atoi(argv[2]);


    /* socket: create the socket */
    sockfd = socket(AF_INET, SOCK_STREAM, 0);
    if (sockfd < 0) 
        printf("ERROR opening socket");


    /* gethostbyname: get the server's DNS entry */
    server = gethostbyname(hostname);
    if (server == NULL) {
        fprintf(stderr,"ERROR, no such host as %s\n", hostname);
        exit(0);
    }

    /* build the server's Internet address */
    bzero((char *) &serveraddr, sizeof(serveraddr));
    serveraddr.sin_family = AF_INET;
    bcopy((char *)server->h_addr, 
	  (char *)&serveraddr.sin_addr.s_addr, server->h_length);
    serveraddr.sin_port = htons(portno);

    /* connect: create a connection with the server */
    if (connect(sockfd, &serveraddr, sizeof(serveraddr)) < 0) 
      error("ERROR connecting");

    strcpy(buf, http_req);

    /* send the message line to the server */
    n = write(sockfd, buf, strlen(buf));
    if (n < 0) 
      error("ERROR writing to socket");

    /* print the server's reply */
    bzero(buf, BUFSIZE);

    waitfd(sockfd);
    n = read(sockfd, buf, 100);
    if (n < 0) 
      error("ERROR reading from socket");
    printf("Echo from server: %s", buf);
    close(sockfd);
    return 0;
}