20 static void xfrm4_beet_make_header(struct sk_buff *skb)  in xfrm4_beet_make_header()  argument
22 	struct iphdr *iph = ip_hdr(skb);  in xfrm4_beet_make_header()
27 	iph->protocol = XFRM_MODE_SKB_CB(skb)->protocol;  in xfrm4_beet_make_header()
28 	iph->tos = XFRM_MODE_SKB_CB(skb)->tos;  in xfrm4_beet_make_header()
30 	iph->id = XFRM_MODE_SKB_CB(skb)->id;  in xfrm4_beet_make_header()
31 	iph->frag_off = XFRM_MODE_SKB_CB(skb)->frag_off;  in xfrm4_beet_make_header()
32 	iph->ttl = XFRM_MODE_SKB_CB(skb)->ttl;  in xfrm4_beet_make_header()
39 static int xfrm4_beet_output(struct xfrm_state *x, struct sk_buff *skb)  in xfrm4_beet_output()  argument
46 	optlen = XFRM_MODE_SKB_CB(skb)->optlen;  in xfrm4_beet_output()
50 	skb_set_network_header(skb, -x->props.header_len -  in xfrm4_beet_output()
51 				    hdrlen + (XFRM_MODE_SKB_CB(skb)->ihl - sizeof(*top_iph)));  in xfrm4_beet_output()
53 		skb->network_header += IPV4_BEET_PHMAXLEN;  in xfrm4_beet_output()
54 	skb->mac_header = skb->network_header +  in xfrm4_beet_output()
56 	skb->transport_header = skb->network_header + sizeof(*top_iph);  in xfrm4_beet_output()
58 	xfrm4_beet_make_header(skb);  in xfrm4_beet_output()
61 		__skb_pull(skb, XFRM_MODE_SKB_CB(skb)->ihl - hdrlen);  in xfrm4_beet_output()
63 	top_iph = ip_hdr(skb);  in xfrm4_beet_output()
84 static int xfrm4_beet_input(struct xfrm_state *x, struct sk_buff *skb)  in xfrm4_beet_input()  argument
90 	if (unlikely(XFRM_MODE_SKB_CB(skb)->protocol == IPPROTO_BEETPH)) {  in xfrm4_beet_input()
94 		if (!pskb_may_pull(skb, sizeof(*ph)))  in xfrm4_beet_input()
97 		ph = (struct ip_beet_phdr *)skb->data;  in xfrm4_beet_input()
104 		XFRM_MODE_SKB_CB(skb)->protocol = ph->nexthdr;  in xfrm4_beet_input()
106 		if (!pskb_may_pull(skb, phlen))  in xfrm4_beet_input()
108 		__skb_pull(skb, phlen);  in xfrm4_beet_input()
111 	skb_push(skb, sizeof(*iph));  in xfrm4_beet_input()
112 	skb_reset_network_header(skb);  in xfrm4_beet_input()
113 	skb_mac_header_rebuild(skb);  in xfrm4_beet_input()
115 	xfrm4_beet_make_header(skb);  in xfrm4_beet_input()
117 	iph = ip_hdr(skb);  in xfrm4_beet_input()
120 	iph->tot_len = htons(skb->len);  in xfrm4_beet_input()
124 	iph->check = ip_fast_csum(skb_network_header(skb), iph->ihl);  in xfrm4_beet_input()