Lines Matching refs:skb
14 static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb, in __skb_udp_tunnel_segment() argument
16 struct sk_buff *(*gso_inner_segment)(struct sk_buff *skb, in __skb_udp_tunnel_segment() argument
20 int tnl_hlen = skb_inner_mac_header(skb) - skb_transport_header(skb); in __skb_udp_tunnel_segment()
23 struct udphdr *uh = udp_hdr(skb); in __skb_udp_tunnel_segment()
24 u16 mac_offset = skb->mac_header; in __skb_udp_tunnel_segment()
25 __be16 protocol = skb->protocol; in __skb_udp_tunnel_segment()
26 u16 mac_len = skb->mac_len; in __skb_udp_tunnel_segment()
31 if (unlikely(!pskb_may_pull(skb, tnl_hlen))) in __skb_udp_tunnel_segment()
40 if (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) in __skb_udp_tunnel_segment()
43 partial = (__force __wsum)htonl(skb->len); in __skb_udp_tunnel_segment()
47 skb->encapsulation = 0; in __skb_udp_tunnel_segment()
48 SKB_GSO_CB(skb)->encap_level = 0; in __skb_udp_tunnel_segment()
49 __skb_pull(skb, tnl_hlen); in __skb_udp_tunnel_segment()
50 skb_reset_mac_header(skb); in __skb_udp_tunnel_segment()
51 skb_set_network_header(skb, skb_inner_network_offset(skb)); in __skb_udp_tunnel_segment()
52 skb->mac_len = skb_inner_network_offset(skb); in __skb_udp_tunnel_segment()
53 skb->protocol = new_protocol; in __skb_udp_tunnel_segment()
55 need_csum = !!(skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM); in __skb_udp_tunnel_segment()
56 skb->encap_hdr_csum = need_csum; in __skb_udp_tunnel_segment()
58 remcsum = !!(skb_shinfo(skb)->gso_type & SKB_GSO_TUNNEL_REMCSUM); in __skb_udp_tunnel_segment()
59 skb->remcsum_offload = remcsum; in __skb_udp_tunnel_segment()
61 need_ipsec = skb_dst(skb) && dst_xfrm(skb_dst(skb)); in __skb_udp_tunnel_segment()
65 (skb->dev->features & in __skb_udp_tunnel_segment()
69 features &= skb->dev->hw_enc_features; in __skb_udp_tunnel_segment()
82 segs = gso_inner_segment(skb, features); in __skb_udp_tunnel_segment()
84 skb_gso_error_unwind(skb, protocol, tnl_hlen, mac_offset, in __skb_udp_tunnel_segment()
91 outer_hlen = skb_tnl_header_len(skb); in __skb_udp_tunnel_segment()
93 skb = segs; in __skb_udp_tunnel_segment()
98 skb->ip_summed = CHECKSUM_NONE; in __skb_udp_tunnel_segment()
101 if (skb->ip_summed == CHECKSUM_PARTIAL) { in __skb_udp_tunnel_segment()
102 skb_reset_inner_headers(skb); in __skb_udp_tunnel_segment()
103 skb->encapsulation = 1; in __skb_udp_tunnel_segment()
106 skb->mac_len = mac_len; in __skb_udp_tunnel_segment()
107 skb->protocol = protocol; in __skb_udp_tunnel_segment()
109 __skb_push(skb, outer_hlen); in __skb_udp_tunnel_segment()
110 skb_reset_mac_header(skb); in __skb_udp_tunnel_segment()
111 skb_set_network_header(skb, mac_len); in __skb_udp_tunnel_segment()
112 skb_set_transport_header(skb, udp_offset); in __skb_udp_tunnel_segment()
113 len = skb->len - udp_offset; in __skb_udp_tunnel_segment()
114 uh = udp_hdr(skb); in __skb_udp_tunnel_segment()
120 if (gso_partial && skb_is_gso(skb)) { in __skb_udp_tunnel_segment()
121 uh->len = htons(skb_shinfo(skb)->gso_size + in __skb_udp_tunnel_segment()
122 SKB_GSO_CB(skb)->data_offset + in __skb_udp_tunnel_segment()
123 skb->head - (unsigned char *)uh); in __skb_udp_tunnel_segment()
134 if (skb->encapsulation || !offload_csum) { in __skb_udp_tunnel_segment()
135 uh->check = gso_make_checksum(skb, ~uh->check); in __skb_udp_tunnel_segment()
139 skb->ip_summed = CHECKSUM_PARTIAL; in __skb_udp_tunnel_segment()
140 skb->csum_start = skb_transport_header(skb) - skb->head; in __skb_udp_tunnel_segment()
141 skb->csum_offset = offsetof(struct udphdr, check); in __skb_udp_tunnel_segment()
143 } while ((skb = skb->next)); in __skb_udp_tunnel_segment()
148 struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb, in skb_udp_tunnel_segment() argument
152 __be16 protocol = skb->protocol; in skb_udp_tunnel_segment()
156 struct sk_buff *(*gso_inner_segment)(struct sk_buff *skb, in skb_udp_tunnel_segment()
161 switch (skb->inner_protocol_type) { in skb_udp_tunnel_segment()
163 protocol = skb->inner_protocol; in skb_udp_tunnel_segment()
168 ops = rcu_dereference(offloads[skb->inner_ipproto]); in skb_udp_tunnel_segment()
177 segs = __skb_udp_tunnel_segment(skb, features, gso_inner_segment, in skb_udp_tunnel_segment()
288 static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb, in udp4_ufo_fragment() argument
297 if (skb->encapsulation && in udp4_ufo_fragment()
298 (skb_shinfo(skb)->gso_type & in udp4_ufo_fragment()
300 segs = skb_udp_tunnel_segment(skb, features, false); in udp4_ufo_fragment()
304 if (!(skb_shinfo(skb)->gso_type & (SKB_GSO_UDP | SKB_GSO_UDP_L4))) in udp4_ufo_fragment()
307 if (!pskb_may_pull(skb, sizeof(struct udphdr))) in udp4_ufo_fragment()
310 if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) in udp4_ufo_fragment()
311 return __udp_gso_segment(skb, features); in udp4_ufo_fragment()
313 mss = skb_shinfo(skb)->gso_size; in udp4_ufo_fragment()
314 if (unlikely(skb->len <= mss)) in udp4_ufo_fragment()
322 uh = udp_hdr(skb); in udp4_ufo_fragment()
323 iph = ip_hdr(skb); in udp4_ufo_fragment()
326 csum = skb_checksum(skb, 0, skb->len, 0); in udp4_ufo_fragment()
327 uh->check = udp_v4_check(skb->len, iph->saddr, iph->daddr, csum); in udp4_ufo_fragment()
331 skb->ip_summed = CHECKSUM_UNNECESSARY; in udp4_ufo_fragment()
337 if (!skb->encap_hdr_csum) in udp4_ufo_fragment()
343 segs = skb_segment(skb, features); in udp4_ufo_fragment()
350 struct sk_buff *skb) in udp_gro_receive_segment() argument
352 struct udphdr *uh = udp_hdr(skb); in udp_gro_receive_segment()
360 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
366 if (ulen <= sizeof(*uh) || ulen != skb_gro_len(skb)) { in udp_gro_receive_segment()
367 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
371 skb_gro_pull(skb, sizeof(struct udphdr)); in udp_gro_receive_segment()
372 skb_gro_postpull_rcsum(skb, uh, sizeof(struct udphdr)); in udp_gro_receive_segment()
392 if (ulen > ntohs(uh2->len) || skb_gro_receive(p, skb) || in udp_gro_receive_segment()
404 INDIRECT_CALLABLE_DECLARE(struct sock *udp6_lib_lookup_skb(struct sk_buff *skb,
406 struct sk_buff *udp_gro_receive(struct list_head *head, struct sk_buff *skb, in udp_gro_receive() argument
412 unsigned int off = skb_gro_offset(skb); in udp_gro_receive()
418 udp4_lib_lookup_skb, skb, uh->source, uh->dest); in udp_gro_receive()
423 pp = call_gro_receive(udp_gro_receive_segment, head, skb); in udp_gro_receive()
428 if (NAPI_GRO_CB(skb)->encap_mark || in udp_gro_receive()
429 (skb->ip_summed != CHECKSUM_PARTIAL && in udp_gro_receive()
430 NAPI_GRO_CB(skb)->csum_cnt == 0 && in udp_gro_receive()
431 !NAPI_GRO_CB(skb)->csum_valid) || in udp_gro_receive()
436 NAPI_GRO_CB(skb)->encap_mark = 1; in udp_gro_receive()
456 skb_gro_pull(skb, sizeof(struct udphdr)); /* pull encapsulating udp header */ in udp_gro_receive()
457 skb_gro_postpull_rcsum(skb, uh, sizeof(struct udphdr)); in udp_gro_receive()
458 pp = call_gro_receive_sk(udp_sk(sk)->gro_receive, sk, head, skb); in udp_gro_receive()
462 skb_gro_flush_final(skb, pp, flush); in udp_gro_receive()
468 struct sk_buff *udp4_gro_receive(struct list_head *head, struct sk_buff *skb) in udp4_gro_receive() argument
470 struct udphdr *uh = udp_gro_udphdr(skb); in udp4_gro_receive()
476 if (NAPI_GRO_CB(skb)->flush) in udp4_gro_receive()
479 if (skb_gro_checksum_validate_zero_check(skb, IPPROTO_UDP, uh->check, in udp4_gro_receive()
483 skb_gro_checksum_try_convert(skb, IPPROTO_UDP, uh->check, in udp4_gro_receive()
486 NAPI_GRO_CB(skb)->is_ipv6 = 0; in udp4_gro_receive()
487 return udp_gro_receive(head, skb, uh, udp4_lib_lookup_skb); in udp4_gro_receive()
490 NAPI_GRO_CB(skb)->flush = 1; in udp4_gro_receive()
494 static int udp_gro_complete_segment(struct sk_buff *skb) in udp_gro_complete_segment() argument
496 struct udphdr *uh = udp_hdr(skb); in udp_gro_complete_segment()
498 skb->csum_start = (unsigned char *)uh - skb->head; in udp_gro_complete_segment()
499 skb->csum_offset = offsetof(struct udphdr, check); in udp_gro_complete_segment()
500 skb->ip_summed = CHECKSUM_PARTIAL; in udp_gro_complete_segment()
502 skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count; in udp_gro_complete_segment()
503 skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_L4; in udp_gro_complete_segment()
507 int udp_gro_complete(struct sk_buff *skb, int nhoff, in udp_gro_complete() argument
510 __be16 newlen = htons(skb->len - nhoff); in udp_gro_complete()
511 struct udphdr *uh = (struct udphdr *)(skb->data + nhoff); in udp_gro_complete()
519 udp4_lib_lookup_skb, skb, uh->source, uh->dest); in udp_gro_complete()
521 err = udp_gro_complete_segment(skb); in udp_gro_complete()
523 skb_shinfo(skb)->gso_type = uh->check ? SKB_GSO_UDP_TUNNEL_CSUM in udp_gro_complete()
529 skb->encapsulation = 1; in udp_gro_complete()
530 err = udp_sk(sk)->gro_complete(sk, skb, in udp_gro_complete()
535 if (skb->remcsum_offload) in udp_gro_complete()
536 skb_shinfo(skb)->gso_type |= SKB_GSO_TUNNEL_REMCSUM; in udp_gro_complete()
542 INDIRECT_CALLABLE_SCOPE int udp4_gro_complete(struct sk_buff *skb, int nhoff) in udp4_gro_complete() argument
544 const struct iphdr *iph = ip_hdr(skb); in udp4_gro_complete()
545 struct udphdr *uh = (struct udphdr *)(skb->data + nhoff); in udp4_gro_complete()
548 uh->check = ~udp_v4_check(skb->len - nhoff, iph->saddr, in udp4_gro_complete()
551 return udp_gro_complete(skb, nhoff, udp4_lib_lookup_skb); in udp4_gro_complete()