51 int iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb,  in iptunnel_xmit()  argument
55 	int pkt_len = skb->len - skb_inner_network_offset(skb);  in iptunnel_xmit()
60 	skb_scrub_packet(skb, xnet);  in iptunnel_xmit()
62 	skb_clear_hash(skb);  in iptunnel_xmit()
63 	skb_dst_set(skb, &rt->dst);  in iptunnel_xmit()
64 	memset(IPCB(skb), 0, sizeof(*IPCB(skb)));  in iptunnel_xmit()
67 	skb_push(skb, sizeof(struct iphdr));  in iptunnel_xmit()
68 	skb_reset_network_header(skb);  in iptunnel_xmit()
70 	iph = ip_hdr(skb);  in iptunnel_xmit()
80 	__ip_select_ident(net, iph, skb_shinfo(skb)->gso_segs ?: 1);  in iptunnel_xmit()
82 	err = ip_local_out(net, sk, skb);  in iptunnel_xmit()
89 int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto)  in iptunnel_pull_header()  argument
91 	if (unlikely(!pskb_may_pull(skb, hdr_len)))  in iptunnel_pull_header()
94 	skb_pull_rcsum(skb, hdr_len);  in iptunnel_pull_header()
99 		if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))  in iptunnel_pull_header()
102 		eh = (struct ethhdr *)skb->data;  in iptunnel_pull_header()
104 			skb->protocol = eh->h_proto;  in iptunnel_pull_header()
106 			skb->protocol = htons(ETH_P_802_2);  in iptunnel_pull_header()
109 		skb->protocol = inner_proto;  in iptunnel_pull_header()
112 	nf_reset(skb);  in iptunnel_pull_header()
113 	secpath_reset(skb);  in iptunnel_pull_header()
114 	skb_clear_hash_if_not_l4(skb);  in iptunnel_pull_header()
115 	skb_dst_drop(skb);  in iptunnel_pull_header()
116 	skb->vlan_tci = 0;  in iptunnel_pull_header()
117 	skb_set_queue_mapping(skb, 0);  in iptunnel_pull_header()
118 	skb->pkt_type = PACKET_HOST;  in iptunnel_pull_header()
150 struct sk_buff *iptunnel_handle_offloads(struct sk_buff *skb,  in iptunnel_handle_offloads()  argument
156 	if (likely(!skb->encapsulation)) {  in iptunnel_handle_offloads()
157 		skb_reset_inner_headers(skb);  in iptunnel_handle_offloads()
158 		skb->encapsulation = 1;  in iptunnel_handle_offloads()
161 	if (skb_is_gso(skb)) {  in iptunnel_handle_offloads()
162 		err = skb_unclone(skb, GFP_ATOMIC);  in iptunnel_handle_offloads()
165 		skb_shinfo(skb)->gso_type |= gso_type_mask;  in iptunnel_handle_offloads()
166 		return skb;  in iptunnel_handle_offloads()
175 		skb->encapsulation = 0;  in iptunnel_handle_offloads()
177 	if (skb->ip_summed == CHECKSUM_PARTIAL && csum_help) {  in iptunnel_handle_offloads()
178 		err = skb_checksum_help(skb);  in iptunnel_handle_offloads()
181 	} else if (skb->ip_summed != CHECKSUM_PARTIAL)  in iptunnel_handle_offloads()
182 		skb->ip_summed = CHECKSUM_NONE;  in iptunnel_handle_offloads()
184 	return skb;  in iptunnel_handle_offloads()
186 	kfree_skb(skb);  in iptunnel_handle_offloads()
279 static int ip_tun_fill_encap_info(struct sk_buff *skb,  in ip_tun_fill_encap_info()  argument
284 	if (nla_put_u64(skb, LWTUNNEL_IP_ID, tun_info->key.tun_id) ||  in ip_tun_fill_encap_info()
285 	    nla_put_be32(skb, LWTUNNEL_IP_DST, tun_info->key.u.ipv4.dst) ||  in ip_tun_fill_encap_info()
286 	    nla_put_be32(skb, LWTUNNEL_IP_SRC, tun_info->key.u.ipv4.src) ||  in ip_tun_fill_encap_info()
287 	    nla_put_u8(skb, LWTUNNEL_IP_TOS, tun_info->key.tos) ||  in ip_tun_fill_encap_info()
288 	    nla_put_u8(skb, LWTUNNEL_IP_TTL, tun_info->key.ttl) ||  in ip_tun_fill_encap_info()
289 	    nla_put_u16(skb, LWTUNNEL_IP_FLAGS, tun_info->key.tun_flags))  in ip_tun_fill_encap_info()
374 static int ip6_tun_fill_encap_info(struct sk_buff *skb,  in ip6_tun_fill_encap_info()  argument
379 	if (nla_put_u64(skb, LWTUNNEL_IP6_ID, tun_info->key.tun_id) ||  in ip6_tun_fill_encap_info()
380 	    nla_put_in6_addr(skb, LWTUNNEL_IP6_DST, &tun_info->key.u.ipv6.dst) ||  in ip6_tun_fill_encap_info()
381 	    nla_put_in6_addr(skb, LWTUNNEL_IP6_SRC, &tun_info->key.u.ipv6.src) ||  in ip6_tun_fill_encap_info()
382 	    nla_put_u8(skb, LWTUNNEL_IP6_HOPLIMIT, tun_info->key.tos) ||  in ip6_tun_fill_encap_info()
383 	    nla_put_u8(skb, LWTUNNEL_IP6_TC, tun_info->key.ttl) ||  in ip6_tun_fill_encap_info()
384 	    nla_put_u16(skb, LWTUNNEL_IP6_FLAGS, tun_info->key.tun_flags))  in ip6_tun_fill_encap_info()