20 static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,  in udp6_ufo_fragment()  argument
33 	mss = skb_shinfo(skb)->gso_size;  in udp6_ufo_fragment()
34 	if (unlikely(skb->len <= mss))  in udp6_ufo_fragment()
37 	if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {  in udp6_ufo_fragment()
39 		int type = skb_shinfo(skb)->gso_type;  in udp6_ufo_fragment()
53 		skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);  in udp6_ufo_fragment()
56 		if (!skb_shinfo(skb)->ip6_frag_id)  in udp6_ufo_fragment()
57 			ipv6_proxy_select_ident(dev_net(skb->dev), skb);  in udp6_ufo_fragment()
63 	if (skb->encapsulation && skb_shinfo(skb)->gso_type &  in udp6_ufo_fragment()
65 		segs = skb_udp_tunnel_segment(skb, features, true);  in udp6_ufo_fragment()
70 		if (!pskb_may_pull(skb, sizeof(struct udphdr)))  in udp6_ufo_fragment()
77 		uh = udp_hdr(skb);  in udp6_ufo_fragment()
78 		ipv6h = ipv6_hdr(skb);  in udp6_ufo_fragment()
81 		csum = skb_checksum(skb, 0, skb->len, 0);  in udp6_ufo_fragment()
82 		uh->check = udp_v6_check(skb->len, &ipv6h->saddr,  in udp6_ufo_fragment()
88 		skb->ip_summed = CHECKSUM_NONE;  in udp6_ufo_fragment()
91 		tnl_hlen = skb_tnl_header_len(skb);  in udp6_ufo_fragment()
92 		if (skb->mac_header < (tnl_hlen + frag_hdr_sz)) {  in udp6_ufo_fragment()
93 			if (gso_pskb_expand_head(skb, tnl_hlen + frag_hdr_sz))  in udp6_ufo_fragment()
100 		unfrag_ip6hlen = ip6_find_1stfragopt(skb, &prevhdr);  in udp6_ufo_fragment()
103 		unfrag_len = (skb_network_header(skb) - skb_mac_header(skb)) +  in udp6_ufo_fragment()
105 		packet_start = (u8 *) skb->head + SKB_GSO_CB(skb)->mac_offset;  in udp6_ufo_fragment()
108 		SKB_GSO_CB(skb)->mac_offset -= frag_hdr_sz;  in udp6_ufo_fragment()
109 		skb->mac_header -= frag_hdr_sz;  in udp6_ufo_fragment()
110 		skb->network_header -= frag_hdr_sz;  in udp6_ufo_fragment()
112 		fptr = (struct frag_hdr *)(skb_network_header(skb) + unfrag_ip6hlen);  in udp6_ufo_fragment()
115 		if (!skb_shinfo(skb)->ip6_frag_id)  in udp6_ufo_fragment()
116 			ipv6_proxy_select_ident(dev_net(skb->dev), skb);  in udp6_ufo_fragment()
117 		fptr->identification = skb_shinfo(skb)->ip6_frag_id;  in udp6_ufo_fragment()
122 		segs = skb_segment(skb, features);  in udp6_ufo_fragment()
130 					 struct sk_buff *skb)  in udp6_gro_receive()  argument
132 	struct udphdr *uh = udp_gro_udphdr(skb);  in udp6_gro_receive()
138 	if (NAPI_GRO_CB(skb)->flush)  in udp6_gro_receive()
141 	if (skb_gro_checksum_validate_zero_check(skb, IPPROTO_UDP, uh->check,  in udp6_gro_receive()
145 		skb_gro_checksum_try_convert(skb, IPPROTO_UDP, uh->check,  in udp6_gro_receive()
149 	NAPI_GRO_CB(skb)->is_ipv6 = 1;  in udp6_gro_receive()
150 	return udp_gro_receive(head, skb, uh);  in udp6_gro_receive()
153 	NAPI_GRO_CB(skb)->flush = 1;  in udp6_gro_receive()
157 static int udp6_gro_complete(struct sk_buff *skb, int nhoff)  in udp6_gro_complete()  argument
159 	const struct ipv6hdr *ipv6h = ipv6_hdr(skb);  in udp6_gro_complete()
160 	struct udphdr *uh = (struct udphdr *)(skb->data + nhoff);  in udp6_gro_complete()
163 		skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL_CSUM;  in udp6_gro_complete()
164 		uh->check = ~udp_v6_check(skb->len - nhoff, &ipv6h->saddr,  in udp6_gro_complete()
167 		skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL;  in udp6_gro_complete()
170 	return udp_gro_complete(skb, nhoff);  in udp6_gro_complete()