Lines Matching refs:skb
15 static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb, in __skb_udp_tunnel_segment() argument
17 struct sk_buff *(*gso_inner_segment)(struct sk_buff *skb, in __skb_udp_tunnel_segment() argument
21 int tnl_hlen = skb_inner_mac_header(skb) - skb_transport_header(skb); in __skb_udp_tunnel_segment()
24 struct udphdr *uh = udp_hdr(skb); in __skb_udp_tunnel_segment()
25 u16 mac_offset = skb->mac_header; in __skb_udp_tunnel_segment()
26 __be16 protocol = skb->protocol; in __skb_udp_tunnel_segment()
27 u16 mac_len = skb->mac_len; in __skb_udp_tunnel_segment()
32 if (unlikely(!pskb_may_pull(skb, tnl_hlen))) in __skb_udp_tunnel_segment()
41 if (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) in __skb_udp_tunnel_segment()
44 partial = (__force __wsum)htonl(skb->len); in __skb_udp_tunnel_segment()
48 skb->encapsulation = 0; in __skb_udp_tunnel_segment()
49 SKB_GSO_CB(skb)->encap_level = 0; in __skb_udp_tunnel_segment()
50 __skb_pull(skb, tnl_hlen); in __skb_udp_tunnel_segment()
51 skb_reset_mac_header(skb); in __skb_udp_tunnel_segment()
52 skb_set_network_header(skb, skb_inner_network_offset(skb)); in __skb_udp_tunnel_segment()
53 skb_set_transport_header(skb, skb_inner_transport_offset(skb)); in __skb_udp_tunnel_segment()
54 skb->mac_len = skb_inner_network_offset(skb); in __skb_udp_tunnel_segment()
55 skb->protocol = new_protocol; in __skb_udp_tunnel_segment()
57 need_csum = !!(skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM); in __skb_udp_tunnel_segment()
58 skb->encap_hdr_csum = need_csum; in __skb_udp_tunnel_segment()
60 remcsum = !!(skb_shinfo(skb)->gso_type & SKB_GSO_TUNNEL_REMCSUM); in __skb_udp_tunnel_segment()
61 skb->remcsum_offload = remcsum; in __skb_udp_tunnel_segment()
63 need_ipsec = skb_dst(skb) && dst_xfrm(skb_dst(skb)); in __skb_udp_tunnel_segment()
67 (skb->dev->features & in __skb_udp_tunnel_segment()
71 features &= skb->dev->hw_enc_features; in __skb_udp_tunnel_segment()
86 segs = gso_inner_segment(skb, features); in __skb_udp_tunnel_segment()
88 skb_gso_error_unwind(skb, protocol, tnl_hlen, mac_offset, in __skb_udp_tunnel_segment()
95 outer_hlen = skb_tnl_header_len(skb); in __skb_udp_tunnel_segment()
97 skb = segs; in __skb_udp_tunnel_segment()
102 skb->ip_summed = CHECKSUM_NONE; in __skb_udp_tunnel_segment()
105 if (skb->ip_summed == CHECKSUM_PARTIAL) { in __skb_udp_tunnel_segment()
106 skb_reset_inner_headers(skb); in __skb_udp_tunnel_segment()
107 skb->encapsulation = 1; in __skb_udp_tunnel_segment()
110 skb->mac_len = mac_len; in __skb_udp_tunnel_segment()
111 skb->protocol = protocol; in __skb_udp_tunnel_segment()
113 __skb_push(skb, outer_hlen); in __skb_udp_tunnel_segment()
114 skb_reset_mac_header(skb); in __skb_udp_tunnel_segment()
115 skb_set_network_header(skb, mac_len); in __skb_udp_tunnel_segment()
116 skb_set_transport_header(skb, udp_offset); in __skb_udp_tunnel_segment()
117 len = skb->len - udp_offset; in __skb_udp_tunnel_segment()
118 uh = udp_hdr(skb); in __skb_udp_tunnel_segment()
124 if (gso_partial && skb_is_gso(skb)) { in __skb_udp_tunnel_segment()
125 uh->len = htons(skb_shinfo(skb)->gso_size + in __skb_udp_tunnel_segment()
126 SKB_GSO_CB(skb)->data_offset + in __skb_udp_tunnel_segment()
127 skb->head - (unsigned char *)uh); in __skb_udp_tunnel_segment()
138 if (skb->encapsulation || !offload_csum) { in __skb_udp_tunnel_segment()
139 uh->check = gso_make_checksum(skb, ~uh->check); in __skb_udp_tunnel_segment()
143 skb->ip_summed = CHECKSUM_PARTIAL; in __skb_udp_tunnel_segment()
144 skb->csum_start = skb_transport_header(skb) - skb->head; in __skb_udp_tunnel_segment()
145 skb->csum_offset = offsetof(struct udphdr, check); in __skb_udp_tunnel_segment()
147 } while ((skb = skb->next)); in __skb_udp_tunnel_segment()
152 struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb, in skb_udp_tunnel_segment() argument
157 __be16 protocol = skb->protocol; in skb_udp_tunnel_segment()
160 struct sk_buff *(*gso_inner_segment)(struct sk_buff *skb, in skb_udp_tunnel_segment()
165 switch (skb->inner_protocol_type) { in skb_udp_tunnel_segment()
167 protocol = skb->inner_protocol; in skb_udp_tunnel_segment()
172 ops = rcu_dereference(offloads[skb->inner_ipproto]); in skb_udp_tunnel_segment()
181 segs = __skb_udp_tunnel_segment(skb, features, gso_inner_segment, in skb_udp_tunnel_segment()
249 static struct sk_buff *__udp_gso_segment_list(struct sk_buff *skb, in __udp_gso_segment_list() argument
253 unsigned int mss = skb_shinfo(skb)->gso_size; in __udp_gso_segment_list()
255 skb = skb_segment_list(skb, features, skb_mac_header_len(skb)); in __udp_gso_segment_list()
256 if (IS_ERR(skb)) in __udp_gso_segment_list()
257 return skb; in __udp_gso_segment_list()
259 udp_hdr(skb)->len = htons(sizeof(struct udphdr) + mss); in __udp_gso_segment_list()
261 return is_ipv6 ? skb : __udpv4_gso_segment_list_csum(skb); in __udp_gso_segment_list()
368 static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb, in udp4_ufo_fragment() argument
377 if (skb->encapsulation && in udp4_ufo_fragment()
378 (skb_shinfo(skb)->gso_type & in udp4_ufo_fragment()
380 segs = skb_udp_tunnel_segment(skb, features, false); in udp4_ufo_fragment()
384 if (!(skb_shinfo(skb)->gso_type & (SKB_GSO_UDP | SKB_GSO_UDP_L4))) in udp4_ufo_fragment()
387 if (!pskb_may_pull(skb, sizeof(struct udphdr))) in udp4_ufo_fragment()
390 if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4 && in udp4_ufo_fragment()
391 !skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) in udp4_ufo_fragment()
392 return __udp_gso_segment(skb, features, false); in udp4_ufo_fragment()
394 mss = skb_shinfo(skb)->gso_size; in udp4_ufo_fragment()
395 if (unlikely(skb->len <= mss)) in udp4_ufo_fragment()
403 uh = udp_hdr(skb); in udp4_ufo_fragment()
404 iph = ip_hdr(skb); in udp4_ufo_fragment()
407 csum = skb_checksum(skb, 0, skb->len, 0); in udp4_ufo_fragment()
408 uh->check = udp_v4_check(skb->len, iph->saddr, iph->daddr, csum); in udp4_ufo_fragment()
412 skb->ip_summed = CHECKSUM_UNNECESSARY; in udp4_ufo_fragment()
418 if (!skb->encap_hdr_csum) in udp4_ufo_fragment()
424 segs = skb_segment(skb, features); in udp4_ufo_fragment()
429 static int skb_gro_receive_list(struct sk_buff *p, struct sk_buff *skb) in skb_gro_receive_list() argument
431 if (unlikely(p->len + skb->len >= 65536)) in skb_gro_receive_list()
435 skb_shinfo(p)->frag_list = skb; in skb_gro_receive_list()
437 NAPI_GRO_CB(p)->last->next = skb; in skb_gro_receive_list()
439 skb_pull(skb, skb_gro_offset(skb)); in skb_gro_receive_list()
441 NAPI_GRO_CB(p)->last = skb; in skb_gro_receive_list()
443 p->data_len += skb->len; in skb_gro_receive_list()
446 skb->destructor = NULL; in skb_gro_receive_list()
447 p->truesize += skb->truesize; in skb_gro_receive_list()
448 p->len += skb->len; in skb_gro_receive_list()
450 NAPI_GRO_CB(skb)->same_flow = 1; in skb_gro_receive_list()
458 struct sk_buff *skb) in udp_gro_receive_segment() argument
460 struct udphdr *uh = udp_gro_udphdr(skb); in udp_gro_receive_segment()
469 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
475 if (ulen <= sizeof(*uh) || ulen != skb_gro_len(skb)) { in udp_gro_receive_segment()
476 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
480 skb_gro_pull(skb, sizeof(struct udphdr)); in udp_gro_receive_segment()
494 if (NAPI_GRO_CB(skb)->is_flist != NAPI_GRO_CB(p)->is_flist) { in udp_gro_receive_segment()
495 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
508 if (NAPI_GRO_CB(skb)->is_flist) { in udp_gro_receive_segment()
509 if (!pskb_may_pull(skb, skb_gro_offset(skb))) { in udp_gro_receive_segment()
510 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
513 if ((skb->ip_summed != p->ip_summed) || in udp_gro_receive_segment()
514 (skb->csum_level != p->csum_level)) { in udp_gro_receive_segment()
515 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
518 ret = skb_gro_receive_list(p, skb); in udp_gro_receive_segment()
520 skb_gro_postpull_rcsum(skb, uh, in udp_gro_receive_segment()
523 ret = skb_gro_receive(p, skb); in udp_gro_receive_segment()
538 struct sk_buff *udp_gro_receive(struct list_head *head, struct sk_buff *skb, in udp_gro_receive() argument
544 unsigned int off = skb_gro_offset(skb); in udp_gro_receive()
550 NAPI_GRO_CB(skb)->is_flist = 0; in udp_gro_receive()
552 if (skb->dev->features & NETIF_F_GRO_FRAGLIST) in udp_gro_receive()
553 NAPI_GRO_CB(skb)->is_flist = sk ? !udp_sk(sk)->gro_enabled : 1; in udp_gro_receive()
555 if ((!sk && (skb->dev->features & NETIF_F_GRO_UDP_FWD)) || in udp_gro_receive()
556 (sk && udp_sk(sk)->gro_enabled) || NAPI_GRO_CB(skb)->is_flist) in udp_gro_receive()
557 return call_gro_receive(udp_gro_receive_segment, head, skb); in udp_gro_receive()
563 if (NAPI_GRO_CB(skb)->encap_mark || in udp_gro_receive()
564 (uh->check && skb->ip_summed != CHECKSUM_PARTIAL && in udp_gro_receive()
565 NAPI_GRO_CB(skb)->csum_cnt == 0 && in udp_gro_receive()
566 !NAPI_GRO_CB(skb)->csum_valid)) in udp_gro_receive()
570 NAPI_GRO_CB(skb)->encap_mark = 1; in udp_gro_receive()
590 skb_gro_pull(skb, sizeof(struct udphdr)); /* pull encapsulating udp header */ in udp_gro_receive()
591 skb_gro_postpull_rcsum(skb, uh, sizeof(struct udphdr)); in udp_gro_receive()
592 pp = call_gro_receive_sk(udp_sk(sk)->gro_receive, sk, head, skb); in udp_gro_receive()
595 skb_gro_flush_final(skb, pp, flush); in udp_gro_receive()
600 static struct sock *udp4_gro_lookup_skb(struct sk_buff *skb, __be16 sport, in udp4_gro_lookup_skb() argument
603 const struct iphdr *iph = skb_gro_network_header(skb); in udp4_gro_lookup_skb()
604 struct net *net = dev_net(skb->dev); in udp4_gro_lookup_skb()
607 iph->daddr, dport, inet_iif(skb), in udp4_gro_lookup_skb()
608 inet_sdif(skb), net->ipv4.udp_table, NULL); in udp4_gro_lookup_skb()
612 struct sk_buff *udp4_gro_receive(struct list_head *head, struct sk_buff *skb) in udp4_gro_receive() argument
614 struct udphdr *uh = udp_gro_udphdr(skb); in udp4_gro_receive()
622 if (NAPI_GRO_CB(skb)->flush) in udp4_gro_receive()
625 if (skb_gro_checksum_validate_zero_check(skb, IPPROTO_UDP, uh->check, in udp4_gro_receive()
629 skb_gro_checksum_try_convert(skb, IPPROTO_UDP, in udp4_gro_receive()
632 NAPI_GRO_CB(skb)->is_ipv6 = 0; in udp4_gro_receive()
635 sk = udp4_gro_lookup_skb(skb, uh->source, uh->dest); in udp4_gro_receive()
637 pp = udp_gro_receive(head, skb, uh, sk); in udp4_gro_receive()
641 NAPI_GRO_CB(skb)->flush = 1; in udp4_gro_receive()
645 static int udp_gro_complete_segment(struct sk_buff *skb) in udp_gro_complete_segment() argument
647 struct udphdr *uh = udp_hdr(skb); in udp_gro_complete_segment()
649 skb->csum_start = (unsigned char *)uh - skb->head; in udp_gro_complete_segment()
650 skb->csum_offset = offsetof(struct udphdr, check); in udp_gro_complete_segment()
651 skb->ip_summed = CHECKSUM_PARTIAL; in udp_gro_complete_segment()
653 skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count; in udp_gro_complete_segment()
654 skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_L4; in udp_gro_complete_segment()
656 if (skb->encapsulation) in udp_gro_complete_segment()
657 skb->inner_transport_header = skb->transport_header; in udp_gro_complete_segment()
662 int udp_gro_complete(struct sk_buff *skb, int nhoff, in udp_gro_complete() argument
665 __be16 newlen = htons(skb->len - nhoff); in udp_gro_complete()
666 struct udphdr *uh = (struct udphdr *)(skb->data + nhoff); in udp_gro_complete()
673 udp4_lib_lookup_skb, skb, uh->source, uh->dest); in udp_gro_complete()
675 skb_shinfo(skb)->gso_type = uh->check ? SKB_GSO_UDP_TUNNEL_CSUM in udp_gro_complete()
681 NAPI_GRO_CB(skb)->encap_mark = 0; in udp_gro_complete()
686 skb->encapsulation = 1; in udp_gro_complete()
687 err = udp_sk(sk)->gro_complete(sk, skb, in udp_gro_complete()
690 err = udp_gro_complete_segment(skb); in udp_gro_complete()
693 if (skb->remcsum_offload) in udp_gro_complete()
694 skb_shinfo(skb)->gso_type |= SKB_GSO_TUNNEL_REMCSUM; in udp_gro_complete()
700 INDIRECT_CALLABLE_SCOPE int udp4_gro_complete(struct sk_buff *skb, int nhoff) in udp4_gro_complete() argument
702 const struct iphdr *iph = ip_hdr(skb); in udp4_gro_complete()
703 struct udphdr *uh = (struct udphdr *)(skb->data + nhoff); in udp4_gro_complete()
706 if (NAPI_GRO_CB(skb)->is_flist && !NAPI_GRO_CB(skb)->encap_mark) { in udp4_gro_complete()
707 uh->len = htons(skb->len - nhoff); in udp4_gro_complete()
709 skb_shinfo(skb)->gso_type |= (SKB_GSO_FRAGLIST|SKB_GSO_UDP_L4); in udp4_gro_complete()
710 skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count; in udp4_gro_complete()
712 if (skb->ip_summed == CHECKSUM_UNNECESSARY) { in udp4_gro_complete()
713 if (skb->csum_level < SKB_MAX_CSUM_LEVEL) in udp4_gro_complete()
714 skb->csum_level++; in udp4_gro_complete()
716 skb->ip_summed = CHECKSUM_UNNECESSARY; in udp4_gro_complete()
717 skb->csum_level = 0; in udp4_gro_complete()
724 uh->check = ~udp_v4_check(skb->len - nhoff, iph->saddr, in udp4_gro_complete()
727 return udp_gro_complete(skb, nhoff, udp4_lib_lookup_skb); in udp4_gro_complete()