sk_buff内核中没有了h nh mac的成员

union {
struct tcphdr *th;
struct udphdr *uh;
struct icmphdr *icmph;
struct igmphdr *igmph;
struct iphdr *ipiph;
struct ipv6hdr *ipv6h;
unsigned char *raw;
} h;

union {
struct iphdr *iph;
struct ipv6hdr *ipv6h;
struct arphdr *arph;
unsigned char *raw;
} nh;

union {
unsigned char *raw;
} mac;

换成了 
sk_buff_data_t transport_header;
sk_buff_data_t network_header;

sk_buff_data_t mac_header;