Linux 内核发包

#include
#include
#include
#include
#include
#include
#include
#include
#include

struct socket        *sock;

unsigned char buffer[10]=
{ 1,2,3,4,5,6,7,8,9,0,
    };



static int ker_send_udp(char* ip_addr, unsigned char * data, size_t len )
{
    int ret;
    
    u32 remote_ip = ntohl(in_aton(ip_addr));
   
   
    struct sockaddr_in sin = {
        .sin_family = AF_INET,
        .sin_port = htons(65530),
        .sin_addr = {.s_addr = remote_ip}
    };

 
 
    struct kvec iov = {.iov_base = (void *)data, .iov_len = len};
    struct msghdr udpmsg;

    udpmsg.msg_name = (void *)&sin;
    udpmsg.msg_namelen = sizeof(sin);
    udpmsg.msg_control = NULL;
    udpmsg.msg_controllen = 0;
    udpmsg.msg_flags=0;

    ret = kernel_sendmsg(sock, &udpmsg, &iov, 1, len);
    printk("rets = %d\n",ret);
   
    return 0;
}


static int socket_init (void)
{
    int ret;
    ret = sock_create_kern (PF_INET, SOCK_DGRAM,IPPROTO_UDP, &sock);
    printk("retc = %d\n",ret);
   
    ker_send_udp("192.168.1.253", buffer, 10);
    return 0;
}

static void socket_exit (void)
{   
    sock_release (sock);
}

module_init (socket_init);
module_exit (socket_exit);
MODULE_LICENSE ("GPL");