内核模块代码hello.c
#include
#include
#include
#include...
#include
#include
#define SOCKET_OPS_BASE128...);
if(sockfd < 0)
{
printf("socket create error\n");
return -1;
}
setsockopt(sockfd, IPPROTO_IP, SOCKET_OPS_SET_HELLO...,
&hello, sizeof(hello));
len = sizeof(hello);
ret = getsockopt(sockfd, IPPROTO_IP, SOCKET_OPS_GET_HELLO...,
&hello, &len);
printf("ret is %d\n", ret);
printf("Now hello is: %d\n", hello);
setsockopt(sockfd,