Lines Matching full:skb
16 static struct sk_buff *__skb_udp_tunnel_segment(struct sk_buff *skb, in __skb_udp_tunnel_segment() argument
18 struct sk_buff *(*gso_inner_segment)(struct sk_buff *skb, in __skb_udp_tunnel_segment() argument
22 int tnl_hlen = skb_inner_mac_header(skb) - skb_transport_header(skb); in __skb_udp_tunnel_segment()
25 struct udphdr *uh = udp_hdr(skb); in __skb_udp_tunnel_segment()
26 u16 mac_offset = skb->mac_header; in __skb_udp_tunnel_segment()
27 __be16 protocol = skb->protocol; in __skb_udp_tunnel_segment()
28 u16 mac_len = skb->mac_len; in __skb_udp_tunnel_segment()
33 if (unlikely(!pskb_may_pull(skb, tnl_hlen))) in __skb_udp_tunnel_segment()
42 if (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) in __skb_udp_tunnel_segment()
45 partial = (__force __wsum)htonl(skb->len); in __skb_udp_tunnel_segment()
48 /* setup inner skb. */ in __skb_udp_tunnel_segment()
49 skb->encapsulation = 0; in __skb_udp_tunnel_segment()
50 SKB_GSO_CB(skb)->encap_level = 0; in __skb_udp_tunnel_segment()
51 __skb_pull(skb, tnl_hlen); in __skb_udp_tunnel_segment()
52 skb_reset_mac_header(skb); in __skb_udp_tunnel_segment()
53 skb_set_network_header(skb, skb_inner_network_offset(skb)); in __skb_udp_tunnel_segment()
54 skb_set_transport_header(skb, skb_inner_transport_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()
87 segs = gso_inner_segment(skb, features); in __skb_udp_tunnel_segment()
89 skb_gso_error_unwind(skb, protocol, tnl_hlen, mac_offset, in __skb_udp_tunnel_segment()
96 outer_hlen = skb_tnl_header_len(skb); in __skb_udp_tunnel_segment()
98 skb = segs; in __skb_udp_tunnel_segment()
103 skb->ip_summed = CHECKSUM_NONE; in __skb_udp_tunnel_segment()
106 if (skb->ip_summed == CHECKSUM_PARTIAL) { in __skb_udp_tunnel_segment()
107 skb_reset_inner_headers(skb); in __skb_udp_tunnel_segment()
108 skb->encapsulation = 1; in __skb_udp_tunnel_segment()
111 skb->mac_len = mac_len; in __skb_udp_tunnel_segment()
112 skb->protocol = protocol; in __skb_udp_tunnel_segment()
114 __skb_push(skb, outer_hlen); in __skb_udp_tunnel_segment()
115 skb_reset_mac_header(skb); in __skb_udp_tunnel_segment()
116 skb_set_network_header(skb, mac_len); in __skb_udp_tunnel_segment()
117 skb_set_transport_header(skb, udp_offset); in __skb_udp_tunnel_segment()
118 len = skb->len - udp_offset; in __skb_udp_tunnel_segment()
119 uh = udp_hdr(skb); in __skb_udp_tunnel_segment()
125 if (gso_partial && skb_is_gso(skb)) { in __skb_udp_tunnel_segment()
126 uh->len = htons(skb_shinfo(skb)->gso_size + in __skb_udp_tunnel_segment()
127 SKB_GSO_CB(skb)->data_offset + in __skb_udp_tunnel_segment()
128 skb->head - (unsigned char *)uh); in __skb_udp_tunnel_segment()
139 if (skb->encapsulation || !offload_csum) { in __skb_udp_tunnel_segment()
140 uh->check = gso_make_checksum(skb, ~uh->check); in __skb_udp_tunnel_segment()
144 skb->ip_summed = CHECKSUM_PARTIAL; in __skb_udp_tunnel_segment()
145 skb->csum_start = skb_transport_header(skb) - skb->head; in __skb_udp_tunnel_segment()
146 skb->csum_offset = offsetof(struct udphdr, check); in __skb_udp_tunnel_segment()
148 } while ((skb = skb->next)); in __skb_udp_tunnel_segment()
153 struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb, in skb_udp_tunnel_segment() argument
158 __be16 protocol = skb->protocol; in skb_udp_tunnel_segment()
161 struct sk_buff *(*gso_inner_segment)(struct sk_buff *skb, in skb_udp_tunnel_segment()
166 switch (skb->inner_protocol_type) { in skb_udp_tunnel_segment()
168 protocol = skb->inner_protocol; in skb_udp_tunnel_segment()
173 ops = rcu_dereference(offloads[skb->inner_ipproto]); in skb_udp_tunnel_segment()
182 segs = __skb_udp_tunnel_segment(skb, features, gso_inner_segment, in skb_udp_tunnel_segment()
306 static struct sk_buff *__udp_gso_segment_list(struct sk_buff *skb, in __udp_gso_segment_list() argument
310 unsigned int mss = skb_shinfo(skb)->gso_size; in __udp_gso_segment_list()
312 skb = skb_segment_list(skb, features, skb_mac_header_len(skb)); in __udp_gso_segment_list()
313 if (IS_ERR(skb)) in __udp_gso_segment_list()
314 return skb; in __udp_gso_segment_list()
316 udp_hdr(skb)->len = htons(sizeof(struct udphdr) + mss); in __udp_gso_segment_list()
319 return __udpv6_gso_segment_list_csum(skb); in __udp_gso_segment_list()
321 return __udpv4_gso_segment_list_csum(skb); in __udp_gso_segment_list()
399 * cases return a GSO skb. So update the mss now. in __udp_gso_segment()
476 static struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb, in udp4_ufo_fragment() argument
485 if (skb->encapsulation && in udp4_ufo_fragment()
486 (skb_shinfo(skb)->gso_type & in udp4_ufo_fragment()
488 segs = skb_udp_tunnel_segment(skb, features, false); in udp4_ufo_fragment()
492 if (!(skb_shinfo(skb)->gso_type & (SKB_GSO_UDP | SKB_GSO_UDP_L4))) in udp4_ufo_fragment()
495 if (!pskb_may_pull(skb, sizeof(struct udphdr))) in udp4_ufo_fragment()
498 if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) in udp4_ufo_fragment()
499 return __udp_gso_segment(skb, features, false); in udp4_ufo_fragment()
501 mss = skb_shinfo(skb)->gso_size; in udp4_ufo_fragment()
502 if (unlikely(skb->len <= mss)) in udp4_ufo_fragment()
510 uh = udp_hdr(skb); in udp4_ufo_fragment()
511 iph = ip_hdr(skb); in udp4_ufo_fragment()
514 csum = skb_checksum(skb, 0, skb->len, 0); in udp4_ufo_fragment()
515 uh->check = udp_v4_check(skb->len, iph->saddr, iph->daddr, csum); in udp4_ufo_fragment()
519 skb->ip_summed = CHECKSUM_UNNECESSARY; in udp4_ufo_fragment()
525 if (!skb->encap_hdr_csum) in udp4_ufo_fragment()
528 /* Fragment the skb. IP headers of the fragments are updated in in udp4_ufo_fragment()
531 segs = skb_segment(skb, features); in udp4_ufo_fragment()
539 struct sk_buff *skb) in udp_gro_receive_segment() argument
541 struct udphdr *uh = udp_gro_udphdr(skb); in udp_gro_receive_segment()
551 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
557 if (ulen <= sizeof(*uh) || ulen != skb_gro_len(skb)) { in udp_gro_receive_segment()
558 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
562 skb_gro_pull(skb, sizeof(struct udphdr)); in udp_gro_receive_segment()
576 if (NAPI_GRO_CB(skb)->is_flist != NAPI_GRO_CB(p)->is_flist) { in udp_gro_receive_segment()
577 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
592 if (NAPI_GRO_CB(skb)->is_flist) { in udp_gro_receive_segment()
593 if (!pskb_may_pull(skb, skb_gro_offset(skb))) { in udp_gro_receive_segment()
594 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
597 if ((skb->ip_summed != p->ip_summed) || in udp_gro_receive_segment()
598 (skb->csum_level != p->csum_level)) { in udp_gro_receive_segment()
599 NAPI_GRO_CB(skb)->flush = 1; in udp_gro_receive_segment()
602 ret = skb_gro_receive_list(p, skb); in udp_gro_receive_segment()
604 skb_gro_postpull_rcsum(skb, uh, in udp_gro_receive_segment()
607 ret = skb_gro_receive(p, skb); in udp_gro_receive_segment()
622 struct sk_buff *udp_gro_receive(struct list_head *head, struct sk_buff *skb, in udp_gro_receive() argument
628 unsigned int off = skb_gro_offset(skb); in udp_gro_receive()
636 NAPI_GRO_CB(skb)->is_flist = 0; in udp_gro_receive()
641 if (skb->encapsulation) in udp_gro_receive()
644 if (skb->dev->features & NETIF_F_GRO_FRAGLIST) in udp_gro_receive()
645 NAPI_GRO_CB(skb)->is_flist = sk ? !udp_test_bit(GRO_ENABLED, sk) : 1; in udp_gro_receive()
647 if ((!sk && (skb->dev->features & NETIF_F_GRO_UDP_FWD)) || in udp_gro_receive()
648 (sk && udp_test_bit(GRO_ENABLED, sk)) || NAPI_GRO_CB(skb)->is_flist) in udp_gro_receive()
649 return call_gro_receive(udp_gro_receive_segment, head, skb); in udp_gro_receive()
655 if (NAPI_GRO_CB(skb)->encap_mark || in udp_gro_receive()
656 (uh->check && skb->ip_summed != CHECKSUM_PARTIAL && in udp_gro_receive()
657 NAPI_GRO_CB(skb)->csum_cnt == 0 && in udp_gro_receive()
658 !NAPI_GRO_CB(skb)->csum_valid)) in udp_gro_receive()
661 /* mark that this skb passed once through the tunnel gro layer */ in udp_gro_receive()
662 NAPI_GRO_CB(skb)->encap_mark = 1; in udp_gro_receive()
682 skb_gro_pull(skb, sizeof(struct udphdr)); /* pull encapsulating udp header */ in udp_gro_receive()
683 skb_gro_postpull_rcsum(skb, uh, sizeof(struct udphdr)); in udp_gro_receive()
684 pp = call_gro_receive_sk(udp_sk(sk)->gro_receive, sk, head, skb); in udp_gro_receive()
687 skb_gro_flush_final(skb, pp, flush); in udp_gro_receive()
692 static struct sock *udp4_gro_lookup_skb(struct sk_buff *skb, __be16 sport, in udp4_gro_lookup_skb() argument
695 const struct iphdr *iph = skb_gro_network_header(skb); in udp4_gro_lookup_skb()
696 struct net *net = dev_net_rcu(skb->dev); in udp4_gro_lookup_skb()
699 inet_get_iif_sdif(skb, &iif, &sdif); in udp4_gro_lookup_skb()
707 struct sk_buff *udp4_gro_receive(struct list_head *head, struct sk_buff *skb) in udp4_gro_receive() argument
709 struct udphdr *uh = udp_gro_udphdr(skb); in udp4_gro_receive()
717 if (NAPI_GRO_CB(skb)->flush) in udp4_gro_receive()
720 if (skb_gro_checksum_validate_zero_check(skb, IPPROTO_UDP, uh->check, in udp4_gro_receive()
724 skb_gro_checksum_try_convert(skb, IPPROTO_UDP, in udp4_gro_receive()
727 NAPI_GRO_CB(skb)->is_ipv6 = 0; in udp4_gro_receive()
730 sk = udp4_gro_lookup_skb(skb, uh->source, uh->dest); in udp4_gro_receive()
732 pp = udp_gro_receive(head, skb, uh, sk); in udp4_gro_receive()
736 NAPI_GRO_CB(skb)->flush = 1; in udp4_gro_receive()
740 static int udp_gro_complete_segment(struct sk_buff *skb) in udp_gro_complete_segment() argument
742 struct udphdr *uh = udp_hdr(skb); in udp_gro_complete_segment()
744 skb->csum_start = (unsigned char *)uh - skb->head; in udp_gro_complete_segment()
745 skb->csum_offset = offsetof(struct udphdr, check); in udp_gro_complete_segment()
746 skb->ip_summed = CHECKSUM_PARTIAL; in udp_gro_complete_segment()
748 skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count; in udp_gro_complete_segment()
749 skb_shinfo(skb)->gso_type |= SKB_GSO_UDP_L4; in udp_gro_complete_segment()
751 if (skb->encapsulation) in udp_gro_complete_segment()
752 skb->inner_transport_header = skb->transport_header; in udp_gro_complete_segment()
757 int udp_gro_complete(struct sk_buff *skb, int nhoff, in udp_gro_complete() argument
760 __be16 newlen = htons(skb->len - nhoff); in udp_gro_complete()
761 struct udphdr *uh = (struct udphdr *)(skb->data + nhoff); in udp_gro_complete()
768 udp4_lib_lookup_skb, skb, uh->source, uh->dest); in udp_gro_complete()
770 skb_shinfo(skb)->gso_type = uh->check ? SKB_GSO_UDP_TUNNEL_CSUM in udp_gro_complete()
776 NAPI_GRO_CB(skb)->encap_mark = 0; in udp_gro_complete()
781 skb->encapsulation = 1; in udp_gro_complete()
782 err = udp_sk(sk)->gro_complete(sk, skb, in udp_gro_complete()
785 err = udp_gro_complete_segment(skb); in udp_gro_complete()
788 if (skb->remcsum_offload) in udp_gro_complete()
789 skb_shinfo(skb)->gso_type |= SKB_GSO_TUNNEL_REMCSUM; in udp_gro_complete()
795 INDIRECT_CALLABLE_SCOPE int udp4_gro_complete(struct sk_buff *skb, int nhoff) in udp4_gro_complete() argument
797 const u16 offset = NAPI_GRO_CB(skb)->network_offsets[skb->encapsulation]; in udp4_gro_complete()
798 const struct iphdr *iph = (struct iphdr *)(skb->data + offset); in udp4_gro_complete()
799 struct udphdr *uh = (struct udphdr *)(skb->data + nhoff); in udp4_gro_complete()
802 if (NAPI_GRO_CB(skb)->is_flist && !NAPI_GRO_CB(skb)->encap_mark) { in udp4_gro_complete()
803 uh->len = htons(skb->len - nhoff); in udp4_gro_complete()
805 skb_shinfo(skb)->gso_type |= (SKB_GSO_FRAGLIST|SKB_GSO_UDP_L4); in udp4_gro_complete()
806 skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count; in udp4_gro_complete()
808 __skb_incr_checksum_unnecessary(skb); in udp4_gro_complete()
814 uh->check = ~udp_v4_check(skb->len - nhoff, iph->saddr, in udp4_gro_complete()
817 return udp_gro_complete(skb, nhoff, udp4_lib_lookup_skb); in udp4_gro_complete()