LL_MAX_HEADER
dev->needed_headroom = LL_MAX_HEADER + GTP_IPV4_MAXLEN;
dev->needed_headroom = LL_MAX_HEADER + GTP_IPV6_MAXLEN;
skbn = netdev_alloc_skb(net, pkt_len + LL_MAX_HEADER);
skb_reserve(skbn, LL_MAX_HEADER);
#define MAX_HEADER LL_MAX_HEADER
#define MAX_HEADER (LL_MAX_HEADER + 48)
unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)];
int hlen = LL_MAX_HEADER;
LL_MAX_HEADER + len, GFP_ATOMIC);
skb_reserve(nskb, LL_MAX_HEADER);
LL_MAX_HEADER, GFP_ATOMIC);
skb_reserve(nskb, LL_MAX_HEADER);
LL_MAX_HEADER, GFP_ATOMIC);
skb_reserve(nskb, LL_MAX_HEADER);
tunnel->dev->hard_header_len = LL_MAX_HEADER + t_hlen;
tunnel->dev->needed_headroom = LL_MAX_HEADER + t_hlen;
tunnel->dev->needed_headroom = LL_MAX_HEADER + t_hlen;
mtu = ETH_DATA_LEN - LL_MAX_HEADER - sizeof(struct ipv6hdr);
LL_MAX_HEADER + len, GFP_ATOMIC);
skb_reserve(nskb, LL_MAX_HEADER);
nskb = alloc_skb(LL_MAX_HEADER + sizeof(struct ipv6hdr) +
skb_reserve(nskb, LL_MAX_HEADER);
LL_MAX_HEADER, GFP_ATOMIC);
skb_reserve(nskb, LL_MAX_HEADER);
int hlen = LL_MAX_HEADER;
if (slave->hard_header_len > LL_MAX_HEADER)
dev->hard_header_len = LL_MAX_HEADER;
#define BUF_HEADROOM ALIGN(((LL_MAX_HEADER + 48) + EHDR_MAX_SIZE), 16)
#define BUF_HEADROOM (LL_MAX_HEADER + 48)