Lines Matching refs:skb
17 static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb, in __skb_udp_tunnel_segment() argument
19 struct sk_buff *(*gso_inner_segment)(struct sk_buff *skb, in __skb_udp_tunnel_segment() argument
23 int tnl_hlen = skb_inner_mac_header(skb) - skb_transport_header(skb); in __skb_udp_tunnel_segment()
26 struct udphdr *uh = udp_hdr(skb); in __skb_udp_tunnel_segment()
27 u16 mac_offset = skb->mac_header; in __skb_udp_tunnel_segment()
28 __be16 protocol = skb->protocol; in __skb_udp_tunnel_segment()
29 u16 mac_len = skb->mac_len; in __skb_udp_tunnel_segment()
34 if (unlikely(!pskb_may_pull(skb, tnl_hlen))) in __skb_udp_tunnel_segment()
43 if (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) in __skb_udp_tunnel_segment()
46 partial = (__force __wsum)htonl(skb->len); in __skb_udp_tunnel_segment()
50 skb->encapsulation = 0; in __skb_udp_tunnel_segment()
51 SKB_GSO_CB(skb)->encap_level = 0; in __skb_udp_tunnel_segment()
52 __skb_pull(skb, tnl_hlen); in __skb_udp_tunnel_segment()
53 skb_reset_mac_header(skb); in __skb_udp_tunnel_segment()
54 skb_set_network_header(skb, skb_inner_network_offset(skb)); in __skb_udp_tunnel_segment()
55 skb->mac_len = skb_inner_network_offset(skb); in __skb_udp_tunnel_segment()
56 skb->protocol = new_protocol; in __skb_udp_tunnel_segment()
58 need_csum = !!(skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM); in __skb_udp_tunnel_segment()
59 skb->encap_hdr_csum = need_csum; in __skb_udp_tunnel_segment()
61 remcsum = !!(skb_shinfo(skb)->gso_type & SKB_GSO_TUNNEL_REMCSUM); in __skb_udp_tunnel_segment()
62 skb->remcsum_offload = remcsum; in __skb_udp_tunnel_segment()
64 need_ipsec = skb_dst(skb) && dst_xfrm(skb_dst(skb)); in __skb_udp_tunnel_segment()
68 (skb->dev->features & in __skb_udp_tunnel_segment()
72 features &= skb->dev->hw_enc_features; in __skb_udp_tunnel_segment()
85 segs = gso_inner_segment(skb, features); in __skb_udp_tunnel_segment()
87 skb_gso_error_unwind(skb, protocol, tnl_hlen, mac_offset, in __skb_udp_tunnel_segment()
94 outer_hlen = skb_tnl_header_len(skb); in __skb_udp_tunnel_segment()
96 skb = segs; in __skb_udp_tunnel_segment()
101 skb->ip_summed = CHECKSUM_NONE; in __skb_udp_tunnel_segment()
104 if (skb->ip_summed == CHECKSUM_PARTIAL) { in __skb_udp_tunnel_segment()
105 skb_reset_inner_headers(skb); in __skb_udp_tunnel_segment()
106 skb->encapsulation = 1; in __skb_udp_tunnel_segment()
109 skb->mac_len = mac_len; in __skb_udp_tunnel_segment()
110 skb->protocol = protocol; in __skb_udp_tunnel_segment()
112 __skb_push(skb, outer_hlen); in __skb_udp_tunnel_segment()
113 skb_reset_mac_header(skb); in __skb_udp_tunnel_segment()
114 skb_set_network_header(skb, mac_len); in __skb_udp_tunnel_segment()
115 skb_set_transport_header(skb, udp_offset); in __skb_udp_tunnel_segment()
116 len = skb->len - udp_offset; in __skb_udp_tunnel_segment()
117 uh = udp_hdr(skb); in __skb_udp_tunnel_segment()
123 if (gso_partial && skb_is_gso(skb)) { in __skb_udp_tunnel_segment()
124 uh->len = htons(skb_shinfo(skb)->gso_size + in __skb_udp_tunnel_segment()
125 SKB_GSO_CB(skb)->data_offset + in __skb_udp_tunnel_segment()
126 skb->head - (unsigned char *)uh); in __skb_udp_tunnel_segment()
137 if (skb->encapsulation || !offload_csum) { in __skb_udp_tunnel_segment()
138 uh->check = gso_make_checksum(skb, ~uh->check); in __skb_udp_tunnel_segment()
142 skb->ip_summed = CHECKSUM_PARTIAL; in __skb_udp_tunnel_segment()
143 skb->csum_start = skb_transport_header(skb) - skb->head; in __skb_udp_tunnel_segment()
144 skb->csum_offset = offsetof(struct udphdr, check); in __skb_udp_tunnel_segment()
146 } while ((skb = skb->next)); in __skb_udp_tunnel_segment()
151 struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb, in skb_udp_tunnel_segment() argument
155 __be16 protocol = skb->protocol; in skb_udp_tunnel_segment()
159 struct sk_buff *(*gso_inner_segment)(struct sk_buff *skb, in skb_udp_tunnel_segment()
164 switch (skb->inner_protocol_type) { in skb_udp_tunnel_segment()
166 protocol = skb->inner_protocol; in skb_udp_tunnel_segment()
171 ops = rcu_dereference(offloads[skb->inner_ipproto]); in skb_udp_tunnel_segment()
180 segs = __skb_udp_tunnel_segment(skb, features, gso_inner_segment, in skb_udp_tunnel_segment()
286 static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb, in udp4_ufo_fragment() argument
295 if (skb->encapsulation && in udp4_ufo_fragment()
296 (skb_shinfo(skb)->gso_type & in udp4_ufo_fragment()
298 segs = skb_udp_tunnel_segment(skb, features, false); in udp4_ufo_fragment()
302 if (!(skb_shinfo(skb)->gso_type & (SKB_GSO_UDP | SKB_GSO_UDP_L4))) in udp4_ufo_fragment()
305 if (!pskb_may_pull(skb, sizeof(struct udphdr))) in udp4_ufo_fragment()
308 if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) in udp4_ufo_fragment()
309 return __udp_gso_segment(skb, features); in udp4_ufo_fragment()
311 mss = skb_shinfo(skb)->gso_size; in udp4_ufo_fragment()
312 if (unlikely(skb->len <= mss)) in udp4_ufo_fragment()
320 uh = udp_hdr(skb); in udp4_ufo_fragment()
321 iph = ip_hdr(skb); in udp4_ufo_fragment()
324 csum = skb_checksum(skb, 0, skb->len, 0); in udp4_ufo_fragment()
325 uh->check = udp_v4_check(skb->len, iph->saddr, iph->daddr, csum); in udp4_ufo_fragment()
329 skb->ip_summed = CHECKSUM_UNNECESSARY; in udp4_ufo_fragment()
335 if (!skb->encap_hdr_csum) in udp4_ufo_fragment()
341 segs = skb_segment(skb, features); in udp4_ufo_fragment()
346 struct sk_buff *udp_gro_receive(struct list_head *head, struct sk_buff *skb, in udp_gro_receive() argument
352 unsigned int off = skb_gro_offset(skb); in udp_gro_receive()
356 if (NAPI_GRO_CB(skb)->encap_mark || in udp_gro_receive()
357 (skb->ip_summed != CHECKSUM_PARTIAL && in udp_gro_receive()
358 NAPI_GRO_CB(skb)->csum_cnt == 0 && in udp_gro_receive()
359 !NAPI_GRO_CB(skb)->csum_valid)) in udp_gro_receive()
363 NAPI_GRO_CB(skb)->encap_mark = 1; in udp_gro_receive()
366 sk = (*lookup)(skb, uh->source, uh->dest); in udp_gro_receive()
391 skb_gro_pull(skb, sizeof(struct udphdr)); /* pull encapsulating udp header */ in udp_gro_receive()
392 skb_gro_postpull_rcsum(skb, uh, sizeof(struct udphdr)); in udp_gro_receive()
393 pp = call_gro_receive_sk(udp_sk(sk)->gro_receive, sk, head, skb); in udp_gro_receive()
398 skb_gro_flush_final(skb, pp, flush); in udp_gro_receive()
404 struct sk_buff *skb) in udp4_gro_receive() argument
406 struct udphdr *uh = udp_gro_udphdr(skb); in udp4_gro_receive()
412 if (NAPI_GRO_CB(skb)->flush) in udp4_gro_receive()
415 if (skb_gro_checksum_validate_zero_check(skb, IPPROTO_UDP, uh->check, in udp4_gro_receive()
419 skb_gro_checksum_try_convert(skb, IPPROTO_UDP, uh->check, in udp4_gro_receive()
422 NAPI_GRO_CB(skb)->is_ipv6 = 0; in udp4_gro_receive()
423 return udp_gro_receive(head, skb, uh, udp4_lib_lookup_skb); in udp4_gro_receive()
426 NAPI_GRO_CB(skb)->flush = 1; in udp4_gro_receive()
430 int udp_gro_complete(struct sk_buff *skb, int nhoff, in udp_gro_complete() argument
433 __be16 newlen = htons(skb->len - nhoff); in udp_gro_complete()
434 struct udphdr *uh = (struct udphdr *)(skb->data + nhoff); in udp_gro_complete()
443 skb->encapsulation = 1; in udp_gro_complete()
446 sk = (*lookup)(skb, uh->source, uh->dest); in udp_gro_complete()
448 err = udp_sk(sk)->gro_complete(sk, skb, in udp_gro_complete()
452 if (skb->remcsum_offload) in udp_gro_complete()
453 skb_shinfo(skb)->gso_type |= SKB_GSO_TUNNEL_REMCSUM; in udp_gro_complete()
459 static int udp4_gro_complete(struct sk_buff *skb, int nhoff) in udp4_gro_complete() argument
461 const struct iphdr *iph = ip_hdr(skb); in udp4_gro_complete()
462 struct udphdr *uh = (struct udphdr *)(skb->data + nhoff); in udp4_gro_complete()
465 skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL_CSUM; in udp4_gro_complete()
466 uh->check = ~udp_v4_check(skb->len - nhoff, iph->saddr, in udp4_gro_complete()
469 skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_TUNNEL; in udp4_gro_complete()
472 return udp_gro_complete(skb, nhoff, udp4_lib_lookup_skb); in udp4_gro_complete()