18 static inline void ipip_ecn_decapsulate(struct sk_buff *skb)  in ipip_ecn_decapsulate()  argument
20 	struct iphdr *inner_iph = ipip_hdr(skb);  in ipip_ecn_decapsulate()
22 	if (INET_ECN_is_ce(XFRM_MODE_SKB_CB(skb)->tos))  in ipip_ecn_decapsulate()
30 static int xfrm4_mode_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)  in xfrm4_mode_tunnel_output()  argument
32 	struct dst_entry *dst = skb_dst(skb);  in xfrm4_mode_tunnel_output()
36 	skb_set_network_header(skb, -x->props.header_len);  in xfrm4_mode_tunnel_output()
37 	skb->mac_header = skb->network_header +  in xfrm4_mode_tunnel_output()
39 	skb->transport_header = skb->network_header + sizeof(*top_iph);  in xfrm4_mode_tunnel_output()
40 	top_iph = ip_hdr(skb);  in xfrm4_mode_tunnel_output()
45 	top_iph->protocol = xfrm_af2proto(skb_dst(skb)->ops->family);  in xfrm4_mode_tunnel_output()
51 		top_iph->tos = XFRM_MODE_SKB_CB(skb)->tos;  in xfrm4_mode_tunnel_output()
53 					    XFRM_MODE_SKB_CB(skb)->tos);  in xfrm4_mode_tunnel_output()
60 		0 : (XFRM_MODE_SKB_CB(skb)->frag_off & htons(IP_DF));  in xfrm4_mode_tunnel_output()
66 	ip_select_ident(dev_net(dst->dev), skb, NULL);  in xfrm4_mode_tunnel_output()
71 static int xfrm4_mode_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)  in xfrm4_mode_tunnel_input()  argument
75 	if (XFRM_MODE_SKB_CB(skb)->protocol != IPPROTO_IPIP)  in xfrm4_mode_tunnel_input()
78 	if (!pskb_may_pull(skb, sizeof(struct iphdr)))  in xfrm4_mode_tunnel_input()
81 	err = skb_unclone(skb, GFP_ATOMIC);  in xfrm4_mode_tunnel_input()
86 		ipv4_copy_dscp(XFRM_MODE_SKB_CB(skb)->tos, ipip_hdr(skb));  in xfrm4_mode_tunnel_input()
88 		ipip_ecn_decapsulate(skb);  in xfrm4_mode_tunnel_input()
90 	skb_reset_network_header(skb);  in xfrm4_mode_tunnel_input()
91 	skb_mac_header_rebuild(skb);  in xfrm4_mode_tunnel_input()