Lines Matching refs:skb
17 static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb, in udp6_ufo_fragment() argument
31 if (skb->encapsulation && skb_shinfo(skb)->gso_type & in udp6_ufo_fragment()
33 segs = skb_udp_tunnel_segment(skb, features, true); in udp6_ufo_fragment()
38 if (!(skb_shinfo(skb)->gso_type & (SKB_GSO_UDP | SKB_GSO_UDP_L4))) in udp6_ufo_fragment()
41 if (!pskb_may_pull(skb, sizeof(struct udphdr))) in udp6_ufo_fragment()
44 if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) in udp6_ufo_fragment()
45 return __udp_gso_segment(skb, features, true); in udp6_ufo_fragment()
47 mss = skb_shinfo(skb)->gso_size; in udp6_ufo_fragment()
48 if (unlikely(skb->len <= mss)) in udp6_ufo_fragment()
55 uh = udp_hdr(skb); in udp6_ufo_fragment()
56 ipv6h = ipv6_hdr(skb); in udp6_ufo_fragment()
59 csum = skb_checksum(skb, 0, skb->len, 0); in udp6_ufo_fragment()
60 uh->check = udp_v6_check(skb->len, &ipv6h->saddr, in udp6_ufo_fragment()
65 skb->ip_summed = CHECKSUM_UNNECESSARY; in udp6_ufo_fragment()
71 if (!skb->encap_hdr_csum) in udp6_ufo_fragment()
75 tnl_hlen = skb_tnl_header_len(skb); in udp6_ufo_fragment()
76 if (skb->mac_header < (tnl_hlen + frag_hdr_sz)) { in udp6_ufo_fragment()
77 if (gso_pskb_expand_head(skb, tnl_hlen + frag_hdr_sz)) in udp6_ufo_fragment()
84 err = ip6_find_1stfragopt(skb, &prevhdr); in udp6_ufo_fragment()
90 unfrag_len = (skb_network_header(skb) - skb_mac_header(skb)) + in udp6_ufo_fragment()
92 packet_start = (u8 *) skb->head + SKB_GSO_CB(skb)->mac_offset; in udp6_ufo_fragment()
95 SKB_GSO_CB(skb)->mac_offset -= frag_hdr_sz; in udp6_ufo_fragment()
96 skb->mac_header -= frag_hdr_sz; in udp6_ufo_fragment()
97 skb->network_header -= frag_hdr_sz; in udp6_ufo_fragment()
99 fptr = (struct frag_hdr *)(skb_network_header(skb) + unfrag_ip6hlen); in udp6_ufo_fragment()
102 fptr->identification = ipv6_proxy_select_ident(dev_net(skb->dev), skb); in udp6_ufo_fragment()
107 segs = skb_segment(skb, features); in udp6_ufo_fragment()
114 static struct sock *udp6_gro_lookup_skb(struct sk_buff *skb, __be16 sport, in udp6_gro_lookup_skb() argument
117 const struct ipv6hdr *iph = skb_gro_network_header(skb); in udp6_gro_lookup_skb()
119 return __udp6_lib_lookup(dev_net(skb->dev), &iph->saddr, sport, in udp6_gro_lookup_skb()
120 &iph->daddr, dport, inet6_iif(skb), in udp6_gro_lookup_skb()
121 inet6_sdif(skb), &udp_table, NULL); in udp6_gro_lookup_skb()
125 struct sk_buff *udp6_gro_receive(struct list_head *head, struct sk_buff *skb) in udp6_gro_receive() argument
127 struct udphdr *uh = udp_gro_udphdr(skb); in udp6_gro_receive()
135 if (NAPI_GRO_CB(skb)->flush) in udp6_gro_receive()
138 if (skb_gro_checksum_validate_zero_check(skb, IPPROTO_UDP, uh->check, in udp6_gro_receive()
142 skb_gro_checksum_try_convert(skb, IPPROTO_UDP, in udp6_gro_receive()
146 NAPI_GRO_CB(skb)->is_ipv6 = 1; in udp6_gro_receive()
150 sk = udp6_gro_lookup_skb(skb, uh->source, uh->dest); in udp6_gro_receive()
152 pp = udp_gro_receive(head, skb, uh, sk); in udp6_gro_receive()
157 NAPI_GRO_CB(skb)->flush = 1; in udp6_gro_receive()
161 INDIRECT_CALLABLE_SCOPE int udp6_gro_complete(struct sk_buff *skb, int nhoff) in udp6_gro_complete() argument
163 const struct ipv6hdr *ipv6h = ipv6_hdr(skb); in udp6_gro_complete()
164 struct udphdr *uh = (struct udphdr *)(skb->data + nhoff); in udp6_gro_complete()
167 if (NAPI_GRO_CB(skb)->is_flist && !NAPI_GRO_CB(skb)->encap_mark) { in udp6_gro_complete()
168 uh->len = htons(skb->len - nhoff); in udp6_gro_complete()
170 skb_shinfo(skb)->gso_type |= (SKB_GSO_FRAGLIST|SKB_GSO_UDP_L4); in udp6_gro_complete()
171 skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count; in udp6_gro_complete()
173 if (skb->ip_summed == CHECKSUM_UNNECESSARY) { in udp6_gro_complete()
174 if (skb->csum_level < SKB_MAX_CSUM_LEVEL) in udp6_gro_complete()
175 skb->csum_level++; in udp6_gro_complete()
177 skb->ip_summed = CHECKSUM_UNNECESSARY; in udp6_gro_complete()
178 skb->csum_level = 0; in udp6_gro_complete()
185 uh->check = ~udp_v6_check(skb->len - nhoff, &ipv6h->saddr, in udp6_gro_complete()
188 return udp_gro_complete(skb, nhoff, udp6_lib_lookup_skb); in udp6_gro_complete()